Index: ossp-pkg/js/src/jsstr.c RCS File: /v/ossp/cvs/ossp-pkg/js/src/jsstr.c,v co -q -kk -p'1.1' '/v/ossp/cvs/ossp-pkg/js/src/jsstr.c,v' | diff -u /dev/null - -L'ossp-pkg/js/src/jsstr.c' 2>/dev/null --- ossp-pkg/js/src/jsstr.c +++ - 2025-05-20 20:57:57.725845768 +0200 @@ -0,0 +1,4645 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * vim: set ts=8 sw=4 et tw=80: + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* + * JS string type implementation. + * + * In order to avoid unnecessary js_LockGCThing/js_UnlockGCThing calls, these + * native methods store strings (possibly newborn) converted from their 'this' + * parameter and arguments on the stack: 'this' conversions at argv[-1], arg + * conversions at their index (argv[0], argv[1]). This is a legitimate method + * of rooting things that might lose their newborn root due to subsequent GC + * allocations in the same native method. + */ +#include "jsstddef.h" +#include +#include +#include "jstypes.h" +#include "jsutil.h" /* Added by JSIFY */ +#include "jshash.h" /* Added by JSIFY */ +#include "jsprf.h" +#include "jsapi.h" +#include "jsarray.h" +#include "jsatom.h" +#include "jsbool.h" +#include "jscntxt.h" +#include "jsconfig.h" +#include "jsgc.h" +#include "jsinterp.h" +#include "jslock.h" +#include "jsnum.h" +#include "jsobj.h" +#include "jsopcode.h" +#include "jsregexp.h" +#include "jsstr.h" + +#if JS_HAS_REPLACE_LAMBDA +#include "jsinterp.h" +#endif + +#define JSSTRDEP_RECURSION_LIMIT 100 + +size_t +js_MinimizeDependentStrings(JSString *str, int level, JSString **basep) +{ + JSString *base; + size_t start, length; + + JS_ASSERT(JSSTRING_IS_DEPENDENT(str)); + base = JSSTRDEP_BASE(str); + start = JSSTRDEP_START(str); + if (JSSTRING_IS_DEPENDENT(base)) { + if (level < JSSTRDEP_RECURSION_LIMIT) { + start += js_MinimizeDependentStrings(base, level + 1, &base); + } else { + do { + start += JSSTRDEP_START(base); + base = JSSTRDEP_BASE(base); + } while (JSSTRING_IS_DEPENDENT(base)); + } + if (start == 0) { + JS_ASSERT(JSSTRING_IS_PREFIX(str)); + JSPREFIX_SET_BASE(str, base); + } else if (start <= JSSTRDEP_START_MASK) { + length = JSSTRDEP_LENGTH(str); + JSSTRDEP_SET_START_AND_LENGTH(str, start, length); + JSSTRDEP_SET_BASE(str, base); + } + } + *basep = base; + return start; +} + +jschar * +js_GetDependentStringChars(JSString *str) +{ + size_t start; + JSString *base; + + start = js_MinimizeDependentStrings(str, 0, &base); + JS_ASSERT(!JSSTRING_IS_DEPENDENT(base)); + JS_ASSERT(start < base->length); + return base->chars + start; +} + +jschar * +js_GetStringChars(JSString *str) +{ + if (JSSTRING_IS_DEPENDENT(str) && !js_UndependString(NULL, str)) + return NULL; + + *js_GetGCThingFlags(str) &= ~GCF_MUTABLE; + return str->chars; +} + +JSString * +js_ConcatStrings(JSContext *cx, JSString *left, JSString *right) +{ + size_t rn, ln, lrdist, n; + jschar *rs, *ls, *s; + JSDependentString *ldep; /* non-null if left should become dependent */ + JSString *str; + + if (JSSTRING_IS_DEPENDENT(right)) { + rn = JSSTRDEP_LENGTH(right); + rs = JSSTRDEP_CHARS(right); + } else { + rn = right->length; + rs = right->chars; + } + if (rn == 0) + return left; + + if (JSSTRING_IS_DEPENDENT(left) || + !(*js_GetGCThingFlags(left) & GCF_MUTABLE)) { + /* We must copy if left does not own a buffer to realloc. */ + ln = JSSTRING_LENGTH(left); + if (ln == 0) + return right; + ls = JSSTRING_CHARS(left); + s = (jschar *) JS_malloc(cx, (ln + rn + 1) * sizeof(jschar)); + if (!s) + return NULL; + js_strncpy(s, ls, ln); + ldep = NULL; + } else { + /* We can realloc left's space and make it depend on our result. */ + ln = left->length; + if (ln == 0) + return right; + ls = left->chars; + s = (jschar *) JS_realloc(cx, ls, (ln + rn + 1) * sizeof(jschar)); + if (!s) + return NULL; + + /* Take care: right could depend on left! */ + lrdist = (size_t)(rs - ls); + if (lrdist < ln) + rs = s + lrdist; + left->chars = ls = s; + ldep = JSSTRDEP(left); + } + + js_strncpy(s + ln, rs, rn); + n = ln + rn; + s[n] = 0; + str = js_NewString(cx, s, n, GCF_MUTABLE); + if (!str) { + /* Out of memory: clean up any space we (re-)allocated. */ + if (!ldep) { + JS_free(cx, s); + } else { + s = JS_realloc(cx, ls, (ln + 1) * sizeof(jschar)); + if (s) + left->chars = s; + } + } else { + /* Morph left into a dependent prefix if we realloc'd its buffer. */ + if (ldep) { + JSPREFIX_SET_LENGTH(ldep, ln); + JSPREFIX_SET_BASE(ldep, str); +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveDependentStrings); + JS_RUNTIME_METER(rt, totalDependentStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum += (double)ln, + rt->strdepLengthSquaredSum += (double)ln * (double)ln)); + } +#endif + } + } + + return str; +} + +/* + * May be called with null cx by js_GetStringChars, above; and by the jslock.c + * MAKE_STRING_IMMUTABLE file-local macro. + */ +const jschar * +js_UndependString(JSContext *cx, JSString *str) +{ + size_t n, size; + jschar *s; + + if (JSSTRING_IS_DEPENDENT(str)) { + n = JSSTRDEP_LENGTH(str); + size = (n + 1) * sizeof(jschar); + s = (jschar *) (cx ? JS_malloc(cx, size) : malloc(size)); + if (!s) + return NULL; + + js_strncpy(s, JSSTRDEP_CHARS(str), n); + s[n] = 0; + str->length = n; + str->chars = s; + +#ifdef DEBUG + if (cx) { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_UNMETER(rt, liveDependentStrings); + JS_RUNTIME_UNMETER(rt, totalDependentStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum -= (double)n, + rt->strdepLengthSquaredSum -= (double)n * (double)n)); + } +#endif + } + + return str->chars; +} + +/* + * Forward declarations for URI encode/decode and helper routines + */ +static JSBool +str_decodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_decodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_encodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_encodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static int +OneUcs4ToUtf8Char(uint8 *utf8Buffer, uint32 ucs4Char); + +static uint32 +Utf8ToOneUcs4Char(const uint8 *utf8Buffer, int utf8Length); + +/* + * Contributions from the String class to the set of methods defined for the + * global object. escape and unescape used to be defined in the Mocha library, + * but as ECMA decided to spec them, they've been moved to the core engine + * and made ECMA-compliant. (Incomplete escapes are interpreted as literal + * characters by unescape.) + */ + +/* + * Stuff to emulate the old libmocha escape, which took a second argument + * giving the type of escape to perform. Retained for compatibility, and + * copied here to avoid reliance on net.h, mkparse.c/NET_EscapeBytes. + */ + +#define URL_XALPHAS ((uint8) 1) +#define URL_XPALPHAS ((uint8) 2) +#define URL_PATH ((uint8) 4) + +static const uint8 urlCharType[256] = +/* Bit 0 xalpha -- the alphas + * Bit 1 xpalpha -- as xalpha but + * converts spaces to plus and plus to %20 + * Bit 2 ... path -- as xalphas but doesn't escape '/' + */ + /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */ + { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x */ + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1x */ + 0,0,0,0,0,0,0,0,0,0,7,4,0,7,7,4, /* 2x !"#$%&'()*+,-./ */ + 7,7,7,7,7,7,7,7,7,7,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */ + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 4x @ABCDEFGHIJKLMNO */ + 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,7, /* 5X PQRSTUVWXYZ[\]^_ */ + 0,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 6x `abcdefghijklmno */ + 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,0, /* 7X pqrstuvwxyz{\}~ DEL */ + 0, }; + +/* This matches the ECMA escape set when mask is 7 (default.) */ + +#define IS_OK(C, mask) (urlCharType[((uint8) (C))] & (mask)) + +/* See ECMA-262 15.1.2.4. */ +JSBool +js_str_escape(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + size_t i, ni, length, newlength; + const jschar *chars; + jschar *newchars; + jschar ch; + jsint mask; + jsdouble d; + const char digits[] = {'0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; + + mask = URL_XALPHAS | URL_XPALPHAS | URL_PATH; + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + if (!JSDOUBLE_IS_FINITE(d) || + (mask = (jsint)d) != d || + mask & ~(URL_XALPHAS | URL_XPALPHAS | URL_PATH)) + { + char numBuf[12]; + JS_snprintf(numBuf, sizeof numBuf, "%lx", (unsigned long) mask); + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_STRING_MASK, numBuf); + return JS_FALSE; + } + } + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + + chars = JSSTRING_CHARS(str); + length = newlength = JSSTRING_LENGTH(str); + + /* Take a first pass and see how big the result string will need to be. */ + for (i = 0; i < length; i++) { + if ((ch = chars[i]) < 128 && IS_OK(ch, mask)) + continue; + if (ch < 256) { + if (mask == URL_XPALPHAS && ch == ' ') + continue; /* The character will be encoded as '+' */ + newlength += 2; /* The character will be encoded as %XX */ + } else { + newlength += 5; /* The character will be encoded as %uXXXX */ + } + + /* + * This overflow test works because newlength is incremented by at + * most 5 on each iteration. + */ + if (newlength < length) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + } + + if (newlength >= ~(size_t)0 / sizeof(jschar)) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + + newchars = (jschar *) JS_malloc(cx, (newlength + 1) * sizeof(jschar)); + if (!newchars) + return JS_FALSE; + for (i = 0, ni = 0; i < length; i++) { + if ((ch = chars[i]) < 128 && IS_OK(ch, mask)) { + newchars[ni++] = ch; + } else if (ch < 256) { + if (mask == URL_XPALPHAS && ch == ' ') { + newchars[ni++] = '+'; /* convert spaces to pluses */ + } else { + newchars[ni++] = '%'; + newchars[ni++] = digits[ch >> 4]; + newchars[ni++] = digits[ch & 0xF]; + } + } else { + newchars[ni++] = '%'; + newchars[ni++] = 'u'; + newchars[ni++] = digits[ch >> 12]; + newchars[ni++] = digits[(ch & 0xF00) >> 8]; + newchars[ni++] = digits[(ch & 0xF0) >> 4]; + newchars[ni++] = digits[ch & 0xF]; + } + } + JS_ASSERT(ni == newlength); + newchars[newlength] = 0; + + str = js_NewString(cx, newchars, newlength, 0); + if (!str) { + JS_free(cx, newchars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#undef IS_OK + +/* See ECMA-262 15.1.2.5 */ +static JSBool +str_unescape(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + size_t i, ni, length; + const jschar *chars; + jschar *newchars; + jschar ch; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + + chars = JSSTRING_CHARS(str); + length = JSSTRING_LENGTH(str); + + /* Don't bother allocating less space for the new string. */ + newchars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!newchars) + return JS_FALSE; + ni = i = 0; + while (i < length) { + ch = chars[i++]; + if (ch == '%') { + if (i + 1 < length && + JS7_ISHEX(chars[i]) && JS7_ISHEX(chars[i + 1])) + { + ch = JS7_UNHEX(chars[i]) * 16 + JS7_UNHEX(chars[i + 1]); + i += 2; + } else if (i + 4 < length && chars[i] == 'u' && + JS7_ISHEX(chars[i + 1]) && JS7_ISHEX(chars[i + 2]) && + JS7_ISHEX(chars[i + 3]) && JS7_ISHEX(chars[i + 4])) + { + ch = (((((JS7_UNHEX(chars[i + 1]) << 4) + + JS7_UNHEX(chars[i + 2])) << 4) + + JS7_UNHEX(chars[i + 3])) << 4) + + JS7_UNHEX(chars[i + 4]); + i += 5; + } + } + newchars[ni++] = ch; + } + newchars[ni] = 0; + + str = js_NewString(cx, newchars, ni, 0); + if (!str) { + JS_free(cx, newchars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +#if JS_HAS_UNEVAL +static JSBool +str_uneval(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + str = js_ValueToSource(cx, argv[0]); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif + +const char js_escape_str[] = "escape"; +const char js_unescape_str[] = "unescape"; +#if JS_HAS_UNEVAL +const char js_uneval_str[] = "uneval"; +#endif +const char js_decodeURI_str[] = "decodeURI"; +const char js_encodeURI_str[] = "encodeURI"; +const char js_decodeURIComponent_str[] = "decodeURIComponent"; +const char js_encodeURIComponent_str[] = "encodeURIComponent"; + +static JSFunctionSpec string_functions[] = { + {js_escape_str, js_str_escape, 1,0,0}, + {js_unescape_str, str_unescape, 1,0,0}, +#if JS_HAS_UNEVAL + {js_uneval_str, str_uneval, 1,0,0}, +#endif + {js_decodeURI_str, str_decodeURI, 1,0,0}, + {js_encodeURI_str, str_encodeURI, 1,0,0}, + {js_decodeURIComponent_str, str_decodeURI_Component, 1,0,0}, + {js_encodeURIComponent_str, str_encodeURI_Component, 1,0,0}, + + {0,0,0,0,0} +}; + +jschar js_empty_ucstr[] = {0}; +JSSubString js_EmptySubString = {0, js_empty_ucstr}; + +enum string_tinyid { + STRING_LENGTH = -1 +}; + +static JSPropertySpec string_props[] = { + {js_length_str, STRING_LENGTH, + JSPROP_READONLY|JSPROP_PERMANENT|JSPROP_SHARED, 0,0}, + {0,0,0,0,0} +}; + +static JSBool +str_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp) +{ + JSString *str; + jsint slot; + + if (!JSVAL_IS_INT(id)) + return JS_TRUE; + + /* + * Call js_ValueToString because getters and setters can be invoked on + * objects of different class, unlike enumerate, resolve, and the other + * class hooks. + */ + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + + slot = JSVAL_TO_INT(id); + if (slot == STRING_LENGTH) + *vp = INT_TO_JSVAL((jsint) JSSTRING_LENGTH(str)); + return JS_TRUE; +} + +#define STRING_ELEMENT_ATTRS (JSPROP_ENUMERATE|JSPROP_READONLY|JSPROP_PERMANENT) + +static JSBool +str_enumerate(JSContext *cx, JSObject *obj) +{ + JSString *str, *str1; + size_t i, length; + + /* Avoid infinite recursion via js_obj_toSource (see bug 271477). */ + if (JS_VERSION_IS_1_2(cx)) + return JS_TRUE; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_TRUE; + cx->newborn[GCX_STRING] = (JSGCThing *) str; + + length = JSSTRING_LENGTH(str); + for (i = 0; i < length; i++) { + str1 = js_NewDependentString(cx, str, i, 1, 0); + if (!str1) + return JS_FALSE; + if (!OBJ_DEFINE_PROPERTY(cx, obj, INT_TO_JSID(i), + STRING_TO_JSVAL(str1), NULL, NULL, + STRING_ELEMENT_ATTRS, NULL)) { + return JS_FALSE; + } + } + return JS_TRUE; +} + +static JSBool +str_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags, + JSObject **objp) +{ + JSString *str, *str1; + jsint slot; + + if (!JSVAL_IS_INT(id) || (flags & JSRESOLVE_ASSIGNING)) + return JS_TRUE; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_TRUE; + cx->newborn[GCX_STRING] = (JSGCThing *) str; + + slot = JSVAL_TO_INT(id); + if ((size_t)slot < JSSTRING_LENGTH(str)) { + str1 = js_NewDependentString(cx, str, (size_t)slot, 1, 0); + if (!str1) + return JS_FALSE; + if (!OBJ_DEFINE_PROPERTY(cx, obj, INT_TO_JSID(slot), + STRING_TO_JSVAL(str1), NULL, NULL, + STRING_ELEMENT_ATTRS, NULL)) { + return JS_FALSE; + } + *objp = obj; + } + return JS_TRUE; +} + +JSClass js_StringClass = { + js_String_str, + JSCLASS_HAS_PRIVATE | JSCLASS_NEW_RESOLVE, + JS_PropertyStub, JS_PropertyStub, str_getProperty, JS_PropertyStub, + str_enumerate, (JSResolveOp)str_resolve, JS_ConvertStub, JS_FinalizeStub, + JSCLASS_NO_OPTIONAL_MEMBERS +}; + +#if JS_HAS_TOSOURCE + +/* + * String.prototype.quote is generic (as are most string methods), unlike + * toSource, toString, and valueOf. + */ +static JSBool +str_quote(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + str = js_QuoteString(cx, str, '"'); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + jsval v; + JSString *str; + size_t i, j, k, n; + char buf[16]; + jschar *s, *t; + + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + v = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + if (!JSVAL_IS_STRING(v)) + return js_obj_toSource(cx, obj, argc, argv, rval); + str = js_QuoteString(cx, JSVAL_TO_STRING(v), '"'); + if (!str) + return JS_FALSE; + j = JS_snprintf(buf, sizeof buf, "(new %s(", js_StringClass.name); + s = JSSTRING_CHARS(str); + k = JSSTRING_LENGTH(str); + n = j + k + 2; + t = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!t) + return JS_FALSE; + for (i = 0; i < j; i++) + t[i] = buf[i]; + for (j = 0; j < k; i++, j++) + t[i] = s[j]; + t[i++] = ')'; + t[i++] = ')'; + t[i] = 0; + str = js_NewString(cx, t, n, 0); + if (!str) { + JS_free(cx, t); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +#endif /* JS_HAS_TOSOURCE */ + +static JSBool +str_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + jsval v; + + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + v = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + if (!JSVAL_IS_STRING(v)) + return js_obj_toString(cx, obj, argc, argv, rval); + *rval = v; + return JS_TRUE; +} + +static JSBool +str_valueOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + *rval = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + return JS_TRUE; +} + +/* + * Java-like string native methods. + */ +static JSBool +str_substring(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) + begin = 0; + else if (begin > length) + begin = length; + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) + end = 0; + else if (end > length) + end = length; + if (end < begin) { + if (!JS_VERSION_IS_1_2(cx)) { + /* XXX emulate old JDK1.0 java.lang.String.substring. */ + jsdouble tmp = begin; + begin = end; + end = tmp; + } else { + end = begin; + } + } + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLowerCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + size_t i, n; + jschar *s, *news; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + n = JSSTRING_LENGTH(str); + news = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return JS_FALSE; + s = JSSTRING_CHARS(str); + for (i = 0; i < n; i++) + news[i] = JS_TOLOWER(s[i]); + news[n] = 0; + str = js_NewString(cx, news, n, 0); + if (!str) { + JS_free(cx, news); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLocaleLowerCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + /* + * Forcefully ignore the first (or any) argument and return toLowerCase(), + * ECMA has reserved that argument, presumably for defining the locale. + */ + if (cx->localeCallbacks && cx->localeCallbacks->localeToLowerCase) { + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + return cx->localeCallbacks->localeToLowerCase(cx, str, rval); + } + return str_toLowerCase(cx, obj, 0, argv, rval); +} + +static JSBool +str_toUpperCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + size_t i, n; + jschar *s, *news; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + n = JSSTRING_LENGTH(str); + news = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return JS_FALSE; + s = JSSTRING_CHARS(str); + for (i = 0; i < n; i++) + news[i] = JS_TOUPPER(s[i]); + news[n] = 0; + str = js_NewString(cx, news, n, 0); + if (!str) { + JS_free(cx, news); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLocaleUpperCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + /* + * Forcefully ignore the first (or any) argument and return toUpperCase(), + * ECMA has reserved that argument, presumbaly for defining the locale. + */ + if (cx->localeCallbacks && cx->localeCallbacks->localeToUpperCase) { + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + return cx->localeCallbacks->localeToUpperCase(cx, str, rval); + } + return str_toUpperCase(cx, obj, 0, argv, rval); +} + +static JSBool +str_localeCompare(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str, *thatStr; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + *rval = JSVAL_ZERO; + } else { + thatStr = js_ValueToString(cx, argv[0]); + if (!thatStr) + return JS_FALSE; + if (cx->localeCallbacks && cx->localeCallbacks->localeCompare) { + argv[0] = STRING_TO_JSVAL(thatStr); + return cx->localeCallbacks->localeCompare(cx, str, thatStr, rval); + } + *rval = INT_TO_JSVAL(js_CompareStrings(str, thatStr)); + } + return JS_TRUE; +} + +static JSBool +str_charAt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + size_t index; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + d = 0.0; + } else { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + } + + if (d < 0 || JSSTRING_LENGTH(str) <= d) { + *rval = JS_GetEmptyStringValue(cx); + } else { + index = (size_t)d; + str = js_NewDependentString(cx, str, index, 1, 0); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + } + return JS_TRUE; +} + +static JSBool +str_charCodeAt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + jsdouble d; + size_t index; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + d = 0.0; + } else { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + } + + if (d < 0 || JSSTRING_LENGTH(str) <= d) { + *rval = JS_GetNaNValue(cx); + } else { + index = (size_t)d; + *rval = INT_TO_JSVAL((jsint) JSSTRING_CHARS(str)[index]); + } + return JS_TRUE; +} + +jsint +js_BoyerMooreHorspool(const jschar *text, jsint textlen, + const jschar *pat, jsint patlen, + jsint start) +{ + jsint i, j, k, m; + uint8 skip[BMH_CHARSET_SIZE]; + jschar c; + + JS_ASSERT(0 < patlen && patlen <= BMH_PATLEN_MAX); + for (i = 0; i < BMH_CHARSET_SIZE; i++) + skip[i] = (uint8)patlen; + m = patlen - 1; + for (i = 0; i < m; i++) { + c = pat[i]; + if (c >= BMH_CHARSET_SIZE) + return BMH_BAD_PATTERN; + skip[c] = (uint8)(m - i); + } + for (k = start + m; + k < textlen; + k += ((c = text[k]) >= BMH_CHARSET_SIZE) ? patlen : skip[c]) { + for (i = k, j = m; ; i--, j--) { + if (j < 0) + return i + 1; + if (text[i] != pat[j]) + break; + } + } + return -1; +} + +static JSBool +str_indexOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *str2; + jsint i, j, index, textlen, patlen; + const jschar *text, *pat; + jsdouble d; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + text = JSSTRING_CHARS(str); + textlen = (jsint) JSSTRING_LENGTH(str); + + str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + pat = JSSTRING_CHARS(str2); + patlen = (jsint) JSSTRING_LENGTH(str2); + + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + if (d < 0) + i = 0; + else if (d > textlen) + i = textlen; + else + i = (jsint)d; + } else { + i = 0; + } + if (patlen == 0) { + *rval = INT_TO_JSVAL(i); + return JS_TRUE; + } + + /* XXX tune the BMH threshold (512) */ + if ((jsuint)(patlen - 2) <= BMH_PATLEN_MAX - 2 && textlen >= 512) { + index = js_BoyerMooreHorspool(text, textlen, pat, patlen, i); + if (index != BMH_BAD_PATTERN) + goto out; + } + + index = -1; + j = 0; + while (i + j < textlen) { + if (text[i + j] == pat[j]) { + if (++j == patlen) { + index = i; + break; + } + } else { + i++; + j = 0; + } + } + +out: + *rval = INT_TO_JSVAL(index); + return JS_TRUE; +} + +static JSBool +str_lastIndexOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str, *str2; + const jschar *text, *pat; + jsint i, j, textlen, patlen; + jsdouble d; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + text = JSSTRING_CHARS(str); + textlen = (jsint) JSSTRING_LENGTH(str); + + str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + pat = JSSTRING_CHARS(str2); + patlen = (jsint) JSSTRING_LENGTH(str2); + + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + if (JSDOUBLE_IS_NaN(d)) { + i = textlen; + } else { + d = js_DoubleToInteger(d); + if (d < 0) + i = 0; + else if (d > textlen) + i = textlen; + else + i = (jsint)d; + } + } else { + i = textlen; + } + + if (patlen == 0) { + *rval = INT_TO_JSVAL(i); + return JS_TRUE; + } + + j = 0; + while (i >= 0) { + /* Don't assume that text is NUL-terminated: it could be dependent. */ + if (i + j < textlen && text[i + j] == pat[j]) { + if (++j == patlen) + break; + } else { + i--; + j = 0; + } + } + *rval = INT_TO_JSVAL(i); + return JS_TRUE; +} + +/* + * Perl-inspired string functions. + */ +#if JS_HAS_REGEXPS +typedef struct GlobData { + uintN flags; /* inout: mode and flag bits, see below */ + uintN optarg; /* in: index of optional flags argument */ + JSString *str; /* out: 'this' parameter object as string */ + JSRegExp *regexp; /* out: regexp parameter object private data */ +} GlobData; + +/* + * Mode and flag bit definitions for match_or_replace's GlobData.flags field. + */ +#define MODE_MATCH 0x00 /* in: return match array on success */ +#define MODE_REPLACE 0x01 /* in: match and replace */ +#define MODE_SEARCH 0x02 /* in: search only, return match index or -1 */ +#define GET_MODE(f) ((f) & 0x03) +#define FORCE_FLAT 0x04 /* in: force flat (non-regexp) string match */ +#define KEEP_REGEXP 0x08 /* inout: keep GlobData.regexp alive for caller + of match_or_replace; if set on input + but clear on output, regexp ownership + does not pass to caller */ +#define GLOBAL_REGEXP 0x10 /* out: regexp had the 'g' flag */ + +static JSBool +match_or_replace(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + JSBool (*glob)(JSContext *cx, jsint count, GlobData *data), + GlobData *data, jsval *rval) +{ + JSString *str, *src, *opt; + JSObject *reobj; + JSRegExp *re; + size_t index, length; + JSBool ok, test; + jsint count; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + data->str = str; + + if (JSVAL_IS_REGEXP(cx, argv[0])) { + reobj = JSVAL_TO_OBJECT(argv[0]); + re = (JSRegExp *) JS_GetPrivate(cx, reobj); + } else { + src = js_ValueToString(cx, argv[0]); + if (!src) + return JS_FALSE; + if (data->optarg < argc) { + argv[0] = STRING_TO_JSVAL(src); + opt = js_ValueToString(cx, argv[data->optarg]); + if (!opt) + return JS_FALSE; + } else { + opt = NULL; + } + re = js_NewRegExpOpt(cx, NULL, src, opt, + (data->flags & FORCE_FLAT) != 0); + if (!re) + return JS_FALSE; + reobj = NULL; + } + /* From here on, all control flow must reach the matching DROP. */ + data->regexp = re; + HOLD_REGEXP(cx, re); + + if (re->flags & JSREG_GLOB) + data->flags |= GLOBAL_REGEXP; + index = 0; + if (GET_MODE(data->flags) == MODE_SEARCH) { + ok = js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, rval); + if (ok) { + *rval = (*rval == JSVAL_TRUE) + ? INT_TO_JSVAL(cx->regExpStatics.leftContext.length) + : INT_TO_JSVAL(-1); + } + } else if (data->flags & GLOBAL_REGEXP) { + if (reobj) { + /* Set the lastIndex property's reserved slot to 0. */ + ok = js_SetLastIndex(cx, reobj, 0); + } else { + ok = JS_TRUE; + } + if (ok) { + length = JSSTRING_LENGTH(str); + for (count = 0; index <= length; count++) { + ok = js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, rval); + if (!ok || *rval != JSVAL_TRUE) + break; + ok = glob(cx, count, data); + if (!ok) + break; + if (cx->regExpStatics.lastMatch.length == 0) { + if (index == length) + break; + index++; + } + } + } + } else { + if (GET_MODE(data->flags) == MODE_REPLACE) { + test = JS_TRUE; + } else { + /* + * MODE_MATCH implies str_match is being called from a script or a + * scripted function. If the caller cares only about testing null + * vs. non-null return value, optimize away the array object that + * would normally be returned in *rval. + */ + JSStackFrame *fp = cx->fp->down; + + /* Skip Function.prototype.call and .apply frames. */ + while (fp && !fp->pc) { + JS_ASSERT(!fp->script); + fp = fp->down; + } + + /* Assume a full array result is required, then prove otherwise. */ + test = JS_FALSE; + if (fp) { + JS_ASSERT(*fp->pc == JSOP_CALL || *fp->pc == JSOP_NEW); + JS_ASSERT(js_CodeSpec[*fp->pc].length == 3); + switch (fp->pc[3]) { + case JSOP_POP: + case JSOP_IFEQ: + case JSOP_IFNE: + case JSOP_IFEQX: + case JSOP_IFNEX: + test = JS_TRUE; + break; + default:; + } + } + } + ok = js_ExecuteRegExp(cx, re, str, &index, test, rval); + } + + DROP_REGEXP(cx, re); + if (reobj) { + /* Tell our caller that it doesn't need to destroy data->regexp. */ + data->flags &= ~KEEP_REGEXP; + } else if (!(data->flags & KEEP_REGEXP)) { + /* Caller didn't want to keep data->regexp, so null and destroy it. */ + data->regexp = NULL; + js_DestroyRegExp(cx, re); + } + + return ok; +} + +typedef struct MatchData { + GlobData base; + jsval *arrayval; /* NB: local root pointer */ +} MatchData; + +static JSBool +match_glob(JSContext *cx, jsint count, GlobData *data) +{ + MatchData *mdata; + JSObject *arrayobj; + JSSubString *matchsub; + JSString *matchstr; + jsval v; + + mdata = (MatchData *)data; + arrayobj = JSVAL_TO_OBJECT(*mdata->arrayval); + if (!arrayobj) { + arrayobj = js_ConstructObject(cx, &js_ArrayClass, NULL, NULL, 0, NULL); + if (!arrayobj) + return JS_FALSE; + *mdata->arrayval = OBJECT_TO_JSVAL(arrayobj); + } + matchsub = &cx->regExpStatics.lastMatch; + matchstr = js_NewStringCopyN(cx, matchsub->chars, matchsub->length, 0); + if (!matchstr) + return JS_FALSE; + v = STRING_TO_JSVAL(matchstr); + return js_SetProperty(cx, arrayobj, INT_TO_JSID(count), &v); +} + +static JSBool +str_match(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + MatchData mdata; + JSBool ok; + + mdata.base.flags = MODE_MATCH; + mdata.base.optarg = 1; + mdata.arrayval = &argv[2]; + *mdata.arrayval = JSVAL_NULL; + ok = match_or_replace(cx, obj, argc, argv, match_glob, &mdata.base, rval); + if (ok && !JSVAL_IS_NULL(*mdata.arrayval)) + *rval = *mdata.arrayval; + return ok; +} + +static JSBool +str_search(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + GlobData data; + + data.flags = MODE_SEARCH; + data.optarg = 1; + return match_or_replace(cx, obj, argc, argv, NULL, &data, rval); +} + +typedef struct ReplaceData { + GlobData base; /* base struct state */ + JSObject *lambda; /* replacement function object or null */ + JSString *repstr; /* replacement string */ + jschar *dollar; /* null or pointer to first $ in repstr */ + jschar *dollarEnd; /* limit pointer for js_strchr_limit */ + jschar *chars; /* result chars, null initially */ + size_t length; /* result length, 0 initially */ + jsint index; /* index in result of next replacement */ + jsint leftIndex; /* left context index in base.str->chars */ + JSSubString dollarStr; /* for "$$" interpret_dollar result */ +} ReplaceData; + +static JSSubString * +interpret_dollar(JSContext *cx, jschar *dp, jschar *ep, ReplaceData *rdata, + size_t *skip) +{ + JSVersion version; + JSRegExpStatics *res; + jschar dc, *cp; + uintN num, tmp; + JSString *str; + + JS_ASSERT(*dp == '$'); + + /* + * Allow a real backslash (literal "\\" before "$1") to escape "$1", e.g. + * Do this only for versions strictly less than ECMAv3. + */ + version = cx->version & JSVERSION_MASK; + if (version != JSVERSION_DEFAULT && version <= JSVERSION_1_4) { + if (dp > JSSTRING_CHARS(rdata->repstr) && dp[-1] == '\\') + return NULL; + } + + /* If there is only a dollar, bail now */ + if (dp + 1 >= ep) + return NULL; + + /* Interpret all Perl match-induced dollar variables. */ + res = &cx->regExpStatics; + dc = dp[1]; + if (JS7_ISDEC(dc)) { + if (version != JSVERSION_DEFAULT && version <= JSVERSION_1_4) { + if (dc == '0') + return NULL; + + /* Check for overflow to avoid gobbling arbitrary decimal digits. */ + num = 0; + cp = dp; + while (++cp < ep && (dc = *cp, JS7_ISDEC(dc))) { + tmp = 10 * num + JS7_UNDEC(dc); + if (tmp < num) + break; + num = tmp; + } + } else { /* ECMA 3, 1-9 or 01-99 */ + num = JS7_UNDEC(dc); + if (num > res->parenCount) + return NULL; + + cp = dp + 2; + if (cp < ep && (dc = *cp, JS7_ISDEC(dc))) { + tmp = 10 * num + JS7_UNDEC(dc); + if (tmp <= res->parenCount) { + cp++; + num = tmp; + } + } + if (num == 0) + return NULL; + } + /* Adjust num from 1 $n-origin to 0 array-index-origin. */ + num--; + *skip = cp - dp; + return REGEXP_PAREN_SUBSTRING(res, num); + } + + *skip = 2; + switch (dc) { + case '$': + rdata->dollarStr.chars = dp; + rdata->dollarStr.length = 1; + return &rdata->dollarStr; + case '&': + return &res->lastMatch; + case '+': + return &res->lastParen; + case '`': + if (version == JSVERSION_1_2) { + /* + * JS1.2 imitated the Perl4 bug where left context at each step + * in an iterative use of a global regexp started from last match, + * not from the start of the target string. But Perl4 does start + * $` at the beginning of the target string when it is used in a + * substitution, so we emulate that special case here. + */ + str = rdata->base.str; + res->leftContext.chars = JSSTRING_CHARS(str); + res->leftContext.length = res->lastMatch.chars + - JSSTRING_CHARS(str); + } + return &res->leftContext; + case '\'': + return &res->rightContext; + } + return NULL; +} + +static JSBool +find_replen(JSContext *cx, ReplaceData *rdata, size_t *sizep) +{ + JSString *repstr; + size_t replen, skip; + jschar *dp, *ep; + JSSubString *sub; +#if JS_HAS_REPLACE_LAMBDA + JSObject *lambda; + + lambda = rdata->lambda; + if (lambda) { + uintN argc, i, j, m, n, p; + jsval *sp, *oldsp, rval; + void *mark; + JSStackFrame *fp; + JSBool ok; + + /* + * Save the regExpStatics from the current regexp, since they may be + * clobbered by a RegExp usage in the lambda function. Note that all + * members of JSRegExpStatics are JSSubStrings, so not GC roots, save + * input, which is rooted otherwise via argv[-1] in str_replace. + */ + JSRegExpStatics save = cx->regExpStatics; + JSBool freeMoreParens = JS_FALSE; + + /* + * In the lambda case, not only do we find the replacement string's + * length, we compute repstr and return it via rdata for use within + * do_replace. The lambda is called with arguments ($&, $1, $2, ..., + * index, input), i.e., all the properties of a regexp match array. + * For $&, etc., we must create string jsvals from cx->regExpStatics. + * We grab up stack space to keep the newborn strings GC-rooted. + */ + p = rdata->base.regexp->parenCount; + argc = 1 + p + 2; + sp = js_AllocStack(cx, 2 + argc, &mark); + if (!sp) + return JS_FALSE; + + /* Push lambda and its 'this' parameter. */ + *sp++ = OBJECT_TO_JSVAL(lambda); + *sp++ = OBJECT_TO_JSVAL(OBJ_GET_PARENT(cx, lambda)); + +#define PUSH_REGEXP_STATIC(sub) \ + JS_BEGIN_MACRO \ + JSString *str = js_NewStringCopyN(cx, \ + cx->regExpStatics.sub.chars, \ + cx->regExpStatics.sub.length, \ + 0); \ + if (!str) { \ + ok = JS_FALSE; \ + goto lambda_out; \ + } \ + *sp++ = STRING_TO_JSVAL(str); \ + JS_END_MACRO + + /* Push $&, $1, $2, ... */ + PUSH_REGEXP_STATIC(lastMatch); + i = 0; + m = cx->regExpStatics.parenCount; + n = JS_MIN(m, 9); + for (j = 0; i < n; i++, j++) + PUSH_REGEXP_STATIC(parens[j]); + for (j = 0; i < m; i++, j++) + PUSH_REGEXP_STATIC(moreParens[j]); + + /* + * We need to clear moreParens in the top-of-stack cx->regExpStatics + * to it won't be possibly realloc'ed, leaving the bottom-of-stack + * moreParens pointing to freed memory. + */ + cx->regExpStatics.moreParens = NULL; + freeMoreParens = JS_TRUE; + +#undef PUSH_REGEXP_STATIC + + /* Make sure to push undefined for any unmatched parens. */ + for (; i < p; i++) + *sp++ = JSVAL_VOID; + + /* Push match index and input string. */ + *sp++ = INT_TO_JSVAL((jsint)cx->regExpStatics.leftContext.length); + *sp++ = STRING_TO_JSVAL(rdata->base.str); + + /* Lift current frame to include the args and do the call. */ + fp = cx->fp; + oldsp = fp->sp; + fp->sp = sp; + ok = js_Invoke(cx, argc, JSINVOKE_INTERNAL); + rval = fp->sp[-1]; + fp->sp = oldsp; + + if (ok) { + /* + * NB: we count on the newborn string root to hold any string + * created by this js_ValueToString that would otherwise be GC- + * able, until we use rdata->repstr in do_replace. + */ + repstr = js_ValueToString(cx, rval); + if (!repstr) { + ok = JS_FALSE; + } else { + rdata->repstr = repstr; + *sizep = JSSTRING_LENGTH(repstr); + } + } + + lambda_out: + js_FreeStack(cx, mark); + if (freeMoreParens) + JS_free(cx, cx->regExpStatics.moreParens); + cx->regExpStatics = save; + return ok; + } +#endif /* JS_HAS_REPLACE_LAMBDA */ + + repstr = rdata->repstr; + replen = JSSTRING_LENGTH(repstr); + for (dp = rdata->dollar, ep = rdata->dollarEnd; dp; + dp = js_strchr_limit(dp, '$', ep)) { + sub = interpret_dollar(cx, dp, ep, rdata, &skip); + if (sub) { + replen += sub->length - skip; + dp += skip; + } + else + dp++; + } + *sizep = replen; + return JS_TRUE; +} + +static void +do_replace(JSContext *cx, ReplaceData *rdata, jschar *chars) +{ + JSString *repstr; + jschar *bp, *cp, *dp, *ep; + size_t len, skip; + JSSubString *sub; + + repstr = rdata->repstr; + bp = cp = JSSTRING_CHARS(repstr); + for (dp = rdata->dollar, ep = rdata->dollarEnd; dp; + dp = js_strchr_limit(dp, '$', ep)) { + len = dp - cp; + js_strncpy(chars, cp, len); + chars += len; + cp = dp; + sub = interpret_dollar(cx, dp, ep, rdata, &skip); + if (sub) { + len = sub->length; + js_strncpy(chars, sub->chars, len); + chars += len; + cp += skip; + dp += skip; + } else { + dp++; + } + } + js_strncpy(chars, cp, JSSTRING_LENGTH(repstr) - (cp - bp)); +} + +static JSBool +replace_glob(JSContext *cx, jsint count, GlobData *data) +{ + ReplaceData *rdata; + JSString *str; + size_t leftoff, leftlen, replen, growth; + const jschar *left; + jschar *chars; + + rdata = (ReplaceData *)data; + str = data->str; + leftoff = rdata->leftIndex; + left = JSSTRING_CHARS(str) + leftoff; + leftlen = cx->regExpStatics.lastMatch.chars - left; + rdata->leftIndex = cx->regExpStatics.lastMatch.chars - JSSTRING_CHARS(str); + rdata->leftIndex += cx->regExpStatics.lastMatch.length; + if (!find_replen(cx, rdata, &replen)) + return JS_FALSE; + growth = leftlen + replen; + chars = (jschar *) + (rdata->chars + ? JS_realloc(cx, rdata->chars, (rdata->length + growth + 1) + * sizeof(jschar)) + : JS_malloc(cx, (growth + 1) * sizeof(jschar))); + if (!chars) { + JS_free(cx, rdata->chars); + rdata->chars = NULL; + return JS_FALSE; + } + rdata->chars = chars; + rdata->length += growth; + chars += rdata->index; + rdata->index += growth; + js_strncpy(chars, left, leftlen); + chars += leftlen; + do_replace(cx, rdata, chars); + return JS_TRUE; +} + +static JSBool +str_replace(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSObject *lambda; + JSString *repstr, *str; + ReplaceData rdata; + JSVersion version; + JSBool ok; + jschar *chars; + size_t leftlen, rightlen, length; + +#if JS_HAS_REPLACE_LAMBDA + if (JS_TypeOfValue(cx, argv[1]) == JSTYPE_FUNCTION) { + lambda = JSVAL_TO_OBJECT(argv[1]); + repstr = NULL; + } else +#endif + { + if (!JS_ConvertValue(cx, argv[1], JSTYPE_STRING, &argv[1])) + return JS_FALSE; + repstr = JSVAL_TO_STRING(argv[1]); + lambda = NULL; + } + + /* + * For ECMA Edition 3, the first argument is to be converted to a string + * to match in a "flat" sense (without regular expression metachars having + * special meanings) UNLESS the first arg is a RegExp object. + */ + rdata.base.flags = MODE_REPLACE | KEEP_REGEXP; + version = cx->version & JSVERSION_MASK; + if (version == JSVERSION_DEFAULT || version > JSVERSION_1_4) + rdata.base.flags |= FORCE_FLAT; + rdata.base.optarg = 2; + + rdata.lambda = lambda; + rdata.repstr = repstr; + if (repstr) { + rdata.dollarEnd = JSSTRING_CHARS(repstr) + JSSTRING_LENGTH(repstr); + rdata.dollar = js_strchr_limit(JSSTRING_CHARS(repstr), '$', + rdata.dollarEnd); + } else { + rdata.dollar = rdata.dollarEnd = NULL; + } + rdata.chars = NULL; + rdata.length = 0; + rdata.index = 0; + rdata.leftIndex = 0; + + ok = match_or_replace(cx, obj, argc, argv, replace_glob, &rdata.base, rval); + if (!ok) + return JS_FALSE; + + if (!rdata.chars) { + if ((rdata.base.flags & GLOBAL_REGEXP) || *rval != JSVAL_TRUE) { + /* Didn't match even once. */ + *rval = STRING_TO_JSVAL(rdata.base.str); + goto out; + } + leftlen = cx->regExpStatics.leftContext.length; + ok = find_replen(cx, &rdata, &length); + if (!ok) + goto out; + length += leftlen; + chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!chars) { + ok = JS_FALSE; + goto out; + } + js_strncpy(chars, cx->regExpStatics.leftContext.chars, leftlen); + do_replace(cx, &rdata, chars + leftlen); + rdata.chars = chars; + rdata.length = length; + } + + rightlen = cx->regExpStatics.rightContext.length; + length = rdata.length + rightlen; + chars = (jschar *) + JS_realloc(cx, rdata.chars, (length + 1) * sizeof(jschar)); + if (!chars) { + JS_free(cx, rdata.chars); + ok = JS_FALSE; + goto out; + } + js_strncpy(chars + rdata.length, cx->regExpStatics.rightContext.chars, + rightlen); + chars[length] = 0; + + str = js_NewString(cx, chars, length, 0); + if (!str) { + JS_free(cx, chars); + ok = JS_FALSE; + goto out; + } + *rval = STRING_TO_JSVAL(str); + +out: + /* If KEEP_REGEXP is still set, it's our job to destroy regexp now. */ + if (rdata.base.flags & KEEP_REGEXP) + js_DestroyRegExp(cx, rdata.base.regexp); + return ok; +} +#endif /* JS_HAS_REGEXPS */ + +/* + * Subroutine used by str_split to find the next split point in str, starting + * at offset *ip and looking either for the separator substring given by sep, + * or for the next re match. In the re case, return the matched separator in + * *sep, and the possibly updated offset in *ip. + * + * Return -2 on error, -1 on end of string, >= 0 for a valid index of the next + * separator occurrence if found, or str->length if no separator is found. + */ +static jsint +find_split(JSContext *cx, JSString *str, JSRegExp *re, jsint *ip, + JSSubString *sep) +{ + jsint i, j, k; + jschar *chars; + size_t length; + + /* + * Stop if past end of string. If at end of string, we will compare the + * null char stored there (by js_NewString*) to sep->chars[j] in the while + * loop at the end of this function, so that + * + * "ab,".split(',') => ["ab", ""] + * + * and the resulting array converts back to the string "ab," for symmetry. + * However, we ape Perl and do this only if there is a sufficiently large + * limit argument (see str_split). + */ + i = *ip; + if ((size_t)i > JSSTRING_LENGTH(str)) + return -1; + + /* + * Perl4 special case for str.split(' '), only if the user has selected + * JavaScript1.2 explicitly. Split on whitespace, and skip leading w/s. + * Strange but true, apparently modeled after awk. + * + * NB: we set sep->length to the length of the w/s run, so we must test + * sep->chars[1] == 0 to make sure sep is just one space. + */ + chars = JSSTRING_CHARS(str); + length = JSSTRING_LENGTH(str); + if (JS_VERSION_IS_1_2(cx) && + !re && *sep->chars == ' ' && sep->chars[1] == 0) { + + /* Skip leading whitespace if at front of str. */ + if (i == 0) { + while (JS_ISSPACE(chars[i])) + i++; + *ip = i; + } + + /* Don't delimit whitespace at end of string. */ + if ((size_t)i == length) + return -1; + + /* Skip over the non-whitespace chars. */ + while ((size_t)i < length && !JS_ISSPACE(chars[i])) + i++; + + /* Now skip the next run of whitespace. */ + j = i; + while ((size_t)j < length && JS_ISSPACE(chars[j])) + j++; + + /* Update sep->length to count delimiter chars. */ + sep->length = (size_t)(j - i); + return i; + } + +#if JS_HAS_REGEXPS + /* + * Match a regular expression against the separator at or above index i. + * Call js_ExecuteRegExp with true for the test argument. On successful + * match, get the separator from cx->regExpStatics.lastMatch. + */ + if (re) { + size_t index; + jsval rval; + + again: + /* JS1.2 deviated from Perl by never matching at end of string. */ + index = (size_t)i; + if (!js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, &rval)) + return -2; + if (rval != JSVAL_TRUE) { + /* Mismatch: ensure our caller advances i past end of string. */ + sep->length = 1; + return length; + } + i = (jsint)index; + *sep = cx->regExpStatics.lastMatch; + if (sep->length == 0) { + /* + * Empty string match: never split on an empty match at the start + * of a find_split cycle. Same rule as for an empty global match + * in match_or_replace. + */ + if (i == *ip) { + /* + * "Bump-along" to avoid sticking at an empty match, but don't + * bump past end of string -- our caller must do that by adding + * sep->length to our return value. + */ + if ((size_t)i == length) { + if (JS_VERSION_IS_1_2(cx)) { + sep->length = 1; + return i; + } + return -1; + } + i++; + goto again; + } + if ((size_t)i == length) { + /* + * If there was a trivial zero-length match at the end of the + * split, then we shouldn't output the matched string at the end + * of the split array. See ECMA-262 Ed. 3, 15.5.4.14, Step 15. + */ + sep->chars = NULL; + } + } + JS_ASSERT((size_t)i >= sep->length); + return i - sep->length; + } +#endif /* JS_HAS_REGEXPS */ + + /* + * Deviate from ECMA by never splitting an empty string by any separator + * string into a non-empty array (an array of length 1 that contains the + * empty string). + */ + if (!JS_VERSION_IS_ECMA(cx) && length == 0) + return -1; + + /* + * Special case: if sep is the empty string, split str into one character + * substrings. Let our caller worry about whether to split once at end of + * string into an empty substring. + * + * For 1.2 compatibility, at the end of the string, we return the length as + * the result, and set the separator length to 1 -- this allows the caller + * to include an additional null string at the end of the substring list. + */ + if (sep->length == 0) { + if (JS_VERSION_IS_1_2(cx)) { + if ((size_t)i == length) { + sep->length = 1; + return i; + } + return i + 1; + } + return ((size_t)i == length) ? -1 : i + 1; + } + + /* + * Now that we know sep is non-empty, search starting at i in str for an + * occurrence of all of sep's chars. If we find them, return the index of + * the first separator char. Otherwise, return length. + */ + j = 0; + while ((size_t)(k = i + j) < length) { + if (chars[k] == sep->chars[j]) { + if ((size_t)++j == sep->length) + return i; + } else { + i++; + j = 0; + } + } + return k; +} + +static JSBool +str_split(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *sub; + JSObject *arrayobj; + jsval v; + JSBool ok, limited; + JSRegExp *re; + JSSubString *sep, tmp; + jsdouble d; + jsint i, j; + uint32 len, limit; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + arrayobj = js_ConstructObject(cx, &js_ArrayClass, NULL, NULL, 0, NULL); + if (!arrayobj) + return JS_FALSE; + *rval = OBJECT_TO_JSVAL(arrayobj); + + if (argc == 0) { + v = STRING_TO_JSVAL(str); + ok = JS_SetElement(cx, arrayobj, 0, &v); + } else { +#if JS_HAS_REGEXPS + if (JSVAL_IS_REGEXP(cx, argv[0])) { + re = (JSRegExp *) JS_GetPrivate(cx, JSVAL_TO_OBJECT(argv[0])); + sep = &tmp; + + /* Set a magic value so we can detect a successful re match. */ + sep->chars = NULL; + } else +#endif + { + JSString *str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + + /* + * Point sep at a local copy of str2's header because find_split + * will modify sep->length. + */ + tmp.length = JSSTRING_LENGTH(str2); + tmp.chars = JSSTRING_CHARS(str2); + sep = &tmp; + re = NULL; + } + + /* Use the second argument as the split limit, if given. */ + limited = (argc > 1) && !JSVAL_IS_VOID(argv[1]); + limit = 0; /* Avoid warning. */ + if (limited) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + + /* Clamp limit between 0 and 1 + string length. */ + if (!js_DoubleToECMAUint32(cx, d, &limit)) + return JS_FALSE; + if (limit > JSSTRING_LENGTH(str)) + limit = 1 + JSSTRING_LENGTH(str); + } + + len = i = 0; + while ((j = find_split(cx, str, re, &i, sep)) >= 0) { + if (limited && len >= limit) + break; + sub = js_NewDependentString(cx, str, i, (size_t)(j - i), 0); + if (!sub) + return JS_FALSE; + v = STRING_TO_JSVAL(sub); + if (!JS_SetElement(cx, arrayobj, len, &v)) + return JS_FALSE; + len++; +#if JS_HAS_REGEXPS + /* + * Imitate perl's feature of including parenthesized substrings + * that matched part of the delimiter in the new array, after the + * split substring that was delimited. + */ + if (re && sep->chars) { + uintN num; + JSSubString *parsub; + + for (num = 0; num < cx->regExpStatics.parenCount; num++) { + if (limited && len >= limit) + break; + parsub = REGEXP_PAREN_SUBSTRING(&cx->regExpStatics, num); + sub = js_NewStringCopyN(cx, parsub->chars, parsub->length, + 0); + if (!sub) + return JS_FALSE; + v = STRING_TO_JSVAL(sub); + if (!JS_SetElement(cx, arrayobj, len, &v)) + return JS_FALSE; + len++; + } + sep->chars = NULL; + } +#endif + i = j + sep->length; + if (!JS_VERSION_IS_ECMA(cx)) { + /* + * Deviate from ECMA to imitate Perl, which omits a final + * split unless a limit argument is given and big enough. + */ + if (!limited && (size_t)i == JSSTRING_LENGTH(str)) + break; + } + } + ok = (j != -2); + } + return ok; +} + +#if JS_HAS_PERL_SUBSTR +static JSBool +str_substr(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) { + begin += length; + if (begin < 0) + begin = 0; + } else if (begin > length) { + begin = length; + } + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) + end = 0; + end += begin; + if (end > length) + end = length; + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif /* JS_HAS_PERL_SUBSTR */ + +#if JS_HAS_SEQUENCE_OPS +/* + * Python-esque sequence operations. + */ +static JSBool +str_concat(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *str2; + uintN i; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + for (i = 0; i < argc; i++) { + str2 = js_ValueToString(cx, argv[i]); + if (!str2) + return JS_FALSE; + argv[i] = STRING_TO_JSVAL(str2); + + str = js_ConcatStrings(cx, str, str2); + if (!str) + return JS_FALSE; + } + + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_slice(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) { + begin += length; + if (begin < 0) + begin = 0; + } else if (begin > length) { + begin = length; + } + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) { + end += length; + if (end < 0) + end = 0; + } else if (end > length) { + end = length; + } + if (end < begin) + end = begin; + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif /* JS_HAS_SEQUENCE_OPS */ + +#if JS_HAS_STR_HTML_HELPERS +/* + * HTML composition aids. + */ +static JSBool +tagify(JSContext *cx, JSObject *obj, jsval *argv, + const char *begin, JSString *param, const char *end, + jsval *rval) +{ + JSString *str; + jschar *tagbuf; + size_t beglen, endlen, parlen, taglen; + size_t i, j; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (!end) + end = begin; + + beglen = strlen(begin); + taglen = 1 + beglen + 1; /* '' */ + parlen = 0; /* Avoid warning. */ + if (param) { + parlen = JSSTRING_LENGTH(param); + taglen += 2 + parlen + 1; /* '="param"' */ + } + endlen = strlen(end); + taglen += JSSTRING_LENGTH(str) + 2 + endlen + 1; /* 'str' */ + + if (taglen >= ~(size_t)0 / sizeof(jschar)) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + + tagbuf = (jschar *) JS_malloc(cx, (taglen + 1) * sizeof(jschar)); + if (!tagbuf) + return JS_FALSE; + + j = 0; + tagbuf[j++] = '<'; + for (i = 0; i < beglen; i++) + tagbuf[j++] = (jschar)begin[i]; + if (param) { + tagbuf[j++] = '='; + tagbuf[j++] = '"'; + js_strncpy(&tagbuf[j], JSSTRING_CHARS(param), parlen); + j += parlen; + tagbuf[j++] = '"'; + } + tagbuf[j++] = '>'; + js_strncpy(&tagbuf[j], JSSTRING_CHARS(str), JSSTRING_LENGTH(str)); + j += JSSTRING_LENGTH(str); + tagbuf[j++] = '<'; + tagbuf[j++] = '/'; + for (i = 0; i < endlen; i++) + tagbuf[j++] = (jschar)end[i]; + tagbuf[j++] = '>'; + JS_ASSERT(j == taglen); + tagbuf[j] = 0; + + str = js_NewString(cx, tagbuf, taglen, 0); + if (!str) { + free((char *)tagbuf); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +tagify_value(JSContext *cx, JSObject *obj, jsval *argv, + const char *begin, const char *end, + jsval *rval) +{ + JSString *param; + + param = js_ValueToString(cx, argv[0]); + if (!param) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(param); + return tagify(cx, obj, argv, begin, param, end, rval); +} + +static JSBool +str_bold(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "b", NULL, NULL, rval); +} + +static JSBool +str_italics(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "i", NULL, NULL, rval); +} + +static JSBool +str_fixed(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "tt", NULL, NULL, rval); +} + +static JSBool +str_fontsize(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "font size", "font", rval); +} + +static JSBool +str_fontcolor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + return tagify_value(cx, obj, argv, "font color", "font", rval); +} + +static JSBool +str_link(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "a href", "a", rval); +} + +static JSBool +str_anchor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "a name", "a", rval); +} + +static JSBool +str_strike(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "strike", NULL, NULL, rval); +} + +static JSBool +str_small(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "small", NULL, NULL, rval); +} + +static JSBool +str_big(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "big", NULL, NULL, rval); +} + +static JSBool +str_blink(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "blink", NULL, NULL, rval); +} + +static JSBool +str_sup(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "sup", NULL, NULL, rval); +} + +static JSBool +str_sub(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "sub", NULL, NULL, rval); +} +#endif /* JS_HAS_STR_HTML_HELPERS */ + +static JSFunctionSpec string_methods[] = { +#if JS_HAS_TOSOURCE + {"quote", str_quote, 0,JSFUN_GENERIC_NATIVE,0}, + {js_toSource_str, str_toSource, 0,0,0}, +#endif + + /* Java-like methods. */ + {js_toString_str, str_toString, 0,0,0}, + {js_valueOf_str, str_valueOf, 0,0,0}, + {"substring", str_substring, 2,JSFUN_GENERIC_NATIVE,0}, + {"toLowerCase", str_toLowerCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"toUpperCase", str_toUpperCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"charAt", str_charAt, 1,JSFUN_GENERIC_NATIVE,0}, + {"charCodeAt", str_charCodeAt, 1,JSFUN_GENERIC_NATIVE,0}, + {"indexOf", str_indexOf, 1,JSFUN_GENERIC_NATIVE,0}, + {"lastIndexOf", str_lastIndexOf, 1,JSFUN_GENERIC_NATIVE,0}, + {"toLocaleLowerCase", str_toLocaleLowerCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"toLocaleUpperCase", str_toLocaleUpperCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"localeCompare", str_localeCompare, 1,JSFUN_GENERIC_NATIVE,0}, + + /* Perl-ish methods (search is actually Python-esque). */ +#if JS_HAS_REGEXPS + {"match", str_match, 1,JSFUN_GENERIC_NATIVE,2}, + {"search", str_search, 1,JSFUN_GENERIC_NATIVE,0}, + {"replace", str_replace, 2,JSFUN_GENERIC_NATIVE,0}, + {"split", str_split, 2,JSFUN_GENERIC_NATIVE,0}, +#endif +#if JS_HAS_PERL_SUBSTR + {"substr", str_substr, 2,JSFUN_GENERIC_NATIVE,0}, +#endif + + /* Python-esque sequence methods. */ +#if JS_HAS_SEQUENCE_OPS + {"concat", str_concat, 0,JSFUN_GENERIC_NATIVE,0}, + {"slice", str_slice, 0,JSFUN_GENERIC_NATIVE,0}, +#endif + + /* HTML string methods. */ +#if JS_HAS_STR_HTML_HELPERS + {"bold", str_bold, 0,0,0}, + {"italics", str_italics, 0,0,0}, + {"fixed", str_fixed, 0,0,0}, + {"fontsize", str_fontsize, 1,0,0}, + {"fontcolor", str_fontcolor, 1,0,0}, + {"link", str_link, 1,0,0}, + {"anchor", str_anchor, 1,0,0}, + {"strike", str_strike, 0,0,0}, + {"small", str_small, 0,0,0}, + {"big", str_big, 0,0,0}, + {"blink", str_blink, 0,0,0}, + {"sup", str_sup, 0,0,0}, + {"sub", str_sub, 0,0,0}, +#endif + + {0,0,0,0,0} +}; + +static JSBool +String(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + if (argc > 0) { + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + } else { + str = cx->runtime->emptyString; + } + if (!(cx->fp->flags & JSFRAME_CONSTRUCTING)) { + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; + } + OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, STRING_TO_JSVAL(str)); + return JS_TRUE; +} + +static JSBool +str_fromCharCode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + jschar *chars; + uintN i; + uint16 code; + JSString *str; + + chars = (jschar *) JS_malloc(cx, (argc + 1) * sizeof(jschar)); + if (!chars) + return JS_FALSE; + for (i = 0; i < argc; i++) { + if (!js_ValueToUint16(cx, argv[i], &code)) { + JS_free(cx, chars); + return JS_FALSE; + } + chars[i] = (jschar)code; + } + chars[i] = 0; + str = js_NewString(cx, chars, argc, 0); + if (!str) { + JS_free(cx, chars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSFunctionSpec string_static_methods[] = { + {"fromCharCode", str_fromCharCode, 1,0,0}, + {0,0,0,0,0} +}; + +static JSHashTable *deflated_string_cache; +#ifdef DEBUG +static uint32 deflated_string_cache_bytes; +#endif +#ifdef JS_THREADSAFE +static JSLock *deflated_string_cache_lock; +#endif + +JSBool +js_InitStringGlobals(void) +{ +#ifdef JS_THREADSAFE + /* Must come through here once in primordial thread to init safely! */ + if (!deflated_string_cache_lock) { + deflated_string_cache_lock = JS_NEW_LOCK(); + if (!deflated_string_cache_lock) + return JS_FALSE; + } +#endif + return JS_TRUE; +} + +void +js_FreeStringGlobals() +{ + if (deflated_string_cache) { + JS_HashTableDestroy(deflated_string_cache); + deflated_string_cache = NULL; + } +#ifdef JS_THREADSAFE + if (deflated_string_cache_lock) { + JS_DESTROY_LOCK(deflated_string_cache_lock); + deflated_string_cache_lock = NULL; + } +#endif +} + +JSBool +js_InitRuntimeStringState(JSContext *cx) +{ + JSRuntime *rt; + JSString *empty; + JSAtom *atom; + + rt = cx->runtime; + JS_ASSERT(!rt->emptyString); + + /* Make a permanently locked empty string. */ + empty = js_NewStringCopyN(cx, js_empty_ucstr, 0, GCF_LOCK); + if (!empty) + return JS_FALSE; + + /* Atomize it for scripts that use '' + x to convert x to string. */ + atom = js_AtomizeString(cx, empty, ATOM_PINNED); + if (!atom) + return JS_FALSE; + + rt->emptyString = empty; + rt->atomState.emptyAtom = atom; + return JS_TRUE; +} + +void +js_FinishRuntimeStringState(JSContext *cx) +{ + JSRuntime *rt = cx->runtime; + + js_UnlockGCThingRT(rt, rt->emptyString); + rt->emptyString = NULL; +} + +JSObject * +js_InitStringClass(JSContext *cx, JSObject *obj) +{ + JSObject *proto; + + /* Define the escape, unescape functions in the global object. */ + if (!JS_DefineFunctions(cx, obj, string_functions)) + return NULL; + + proto = JS_InitClass(cx, obj, NULL, &js_StringClass, String, 1, + string_props, string_methods, + NULL, string_static_methods); + if (!proto) + return NULL; + OBJ_SET_SLOT(cx, proto, JSSLOT_PRIVATE, + STRING_TO_JSVAL(cx->runtime->emptyString)); + return proto; +} + +JSString * +js_NewString(JSContext *cx, jschar *chars, size_t length, uintN gcflag) +{ + JSString *str; + + if (length > JSSTRING_LENGTH_MASK) { + JS_ReportOutOfMemory(cx); + return NULL; + } + + str = (JSString *) js_NewGCThing(cx, gcflag | GCX_STRING, sizeof(JSString)); + if (!str) + return NULL; + str->length = length; + str->chars = chars; +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveStrings); + JS_RUNTIME_METER(rt, totalStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->lengthSum += (double)length, + rt->lengthSquaredSum += (double)length * (double)length)); + } +#endif + return str; +} + +JSString * +js_NewDependentString(JSContext *cx, JSString *base, size_t start, + size_t length, uintN gcflag) +{ + JSDependentString *ds; + + if (length == 0) + return cx->runtime->emptyString; + + if (start == 0 && length == JSSTRING_LENGTH(base)) + return base; + + if (start > JSSTRDEP_START_MASK || + (start != 0 && length > JSSTRDEP_LENGTH_MASK)) { + return js_NewStringCopyN(cx, JSSTRING_CHARS(base) + start, length, + gcflag); + } + + ds = (JSDependentString *) + js_NewGCThing(cx, gcflag | GCX_MUTABLE_STRING, sizeof(JSString)); + if (!ds) + return NULL; + if (start == 0) { + JSPREFIX_SET_LENGTH(ds, length); + JSPREFIX_SET_BASE(ds, base); + } else { + JSSTRDEP_SET_START_AND_LENGTH(ds, start, length); + JSSTRDEP_SET_BASE(ds, base); + } +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveDependentStrings); + JS_RUNTIME_METER(rt, totalDependentStrings); + JS_RUNTIME_METER(rt, liveStrings); + JS_RUNTIME_METER(rt, totalStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum += (double)length, + rt->strdepLengthSquaredSum += (double)length * (double)length)); + JS_LOCK_RUNTIME_VOID(rt, + (rt->lengthSum += (double)length, + rt->lengthSquaredSum += (double)length * (double)length)); + } +#endif + return (JSString *)ds; +} + +#ifdef DEBUG +#include + +void printJSStringStats(JSRuntime *rt) { + double mean = 0., var = 0., sigma = 0.; + jsrefcount count = rt->totalStrings; + if (count > 0 && rt->lengthSum >= 0) { + mean = rt->lengthSum / count; + var = count * rt->lengthSquaredSum - rt->lengthSum * rt->lengthSum; + if (var < 0.0 || count <= 1) + var = 0.0; + else + var /= count * (count - 1); + + /* Windows says sqrt(0.0) is "-1.#J" (?!) so we must test. */ + sigma = (var != 0.) ? sqrt(var) : 0.; + } + fprintf(stderr, "%lu total strings, mean length %g (sigma %g)\n", + (unsigned long)count, mean, sigma); + + mean = var = sigma = 0.; + count = rt->totalDependentStrings; + if (count > 0 && rt->strdepLengthSum >= 0) { + mean = rt->strdepLengthSum / count; + var = count * rt->strdepLengthSquaredSum + - rt->strdepLengthSum * rt->strdepLengthSum; + if (var < 0.0 || count <= 1) + var = 0.0; + else + var /= count * (count - 1); + + /* Windows says sqrt(0.0) is "-1.#J" (?!) so we must test. */ + sigma = (var != 0.) ? sqrt(var) : 0.; + } + fprintf(stderr, "%lu total dependent strings, mean length %g (sigma %g)\n", + (unsigned long)count, mean, sigma); +} +#endif + +JSString * +js_NewStringCopyN(JSContext *cx, const jschar *s, size_t n, uintN gcflag) +{ + jschar *news; + JSString *str; + + news = (jschar *)JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return NULL; + js_strncpy(news, s, n); + news[n] = 0; + str = js_NewString(cx, news, n, gcflag); + if (!str) + JS_free(cx, news); + return str; +} + +JSString * +js_NewStringCopyZ(JSContext *cx, const jschar *s, uintN gcflag) +{ + size_t n, m; + jschar *news; + JSString *str; + + n = js_strlen(s); + m = (n + 1) * sizeof(jschar); + news = (jschar *) JS_malloc(cx, m); + if (!news) + return NULL; + memcpy(news, s, m); + str = js_NewString(cx, news, n, gcflag); + if (!str) + JS_free(cx, news); + return str; +} + +JS_STATIC_DLL_CALLBACK(JSHashNumber) +js_hash_string_pointer(const void *key) +{ + return (JSHashNumber)JS_PTR_TO_UINT32(key) >> JSVAL_TAGBITS; +} + +void +js_PurgeDeflatedStringCache(JSString *str) +{ + JSHashNumber hash; + JSHashEntry *he, **hep; + + if (!deflated_string_cache) + return; + + hash = js_hash_string_pointer(str); + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + hep = JS_HashTableRawLookup(deflated_string_cache, hash, str); + he = *hep; + if (he) { +#ifdef DEBUG + deflated_string_cache_bytes -= JSSTRING_LENGTH(str); +#endif + free(he->value); + JS_HashTableRawRemove(deflated_string_cache, hep, he); + } + JS_RELEASE_LOCK(deflated_string_cache_lock); +} + +void +js_FinalizeString(JSContext *cx, JSString *str) +{ + js_FinalizeStringRT(cx->runtime, str); +} + +void +js_FinalizeStringRT(JSRuntime *rt, JSString *str) +{ + JSBool valid; + + JS_RUNTIME_UNMETER(rt, liveStrings); + if (JSSTRING_IS_DEPENDENT(str)) { + /* If JSSTRFLAG_DEPENDENT is set, this string must be valid. */ + JS_ASSERT(JSSTRDEP_BASE(str)); + JS_RUNTIME_UNMETER(rt, liveDependentStrings); + valid = JS_TRUE; + } else { + /* A stillborn string has null chars, so is not valid. */ + valid = (str->chars != NULL); + if (valid) + free(str->chars); + } + if (valid) { + js_PurgeDeflatedStringCache(str); + str->chars = NULL; + } + str->length = 0; +} + +JSObject * +js_StringToObject(JSContext *cx, JSString *str) +{ + JSObject *obj; + + obj = js_NewObject(cx, &js_StringClass, NULL, NULL); + if (!obj) + return NULL; + OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, STRING_TO_JSVAL(str)); + return obj; +} + +JS_FRIEND_API(const char *) +js_ValueToPrintableString(JSContext *cx, jsval v) +{ + JSString *str; + const char *bytes; + + str = js_ValueToString(cx, v); + if (!str) + return NULL; + str = js_QuoteString(cx, str, 0); + if (!str) + return NULL; + bytes = js_GetStringBytes(str); + if (!bytes) + JS_ReportOutOfMemory(cx); + return bytes; +} + +JSString * +js_ValueToString(JSContext *cx, jsval v) +{ + JSObject *obj; + JSString *str; + + if (JSVAL_IS_OBJECT(v)) { + obj = JSVAL_TO_OBJECT(v); + if (!obj) + return ATOM_TO_STRING(cx->runtime->atomState.nullAtom); + if (!OBJ_DEFAULT_VALUE(cx, obj, JSTYPE_STRING, &v)) + return NULL; + } + if (JSVAL_IS_STRING(v)) { + str = JSVAL_TO_STRING(v); + } else if (JSVAL_IS_INT(v)) { + str = js_NumberToString(cx, JSVAL_TO_INT(v)); + } else if (JSVAL_IS_DOUBLE(v)) { + str = js_NumberToString(cx, *JSVAL_TO_DOUBLE(v)); + } else if (JSVAL_IS_BOOLEAN(v)) { + str = js_BooleanToString(cx, JSVAL_TO_BOOLEAN(v)); + } else { + str = ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[JSTYPE_VOID]); + } + return str; +} + +JSString * +js_ValueToSource(JSContext *cx, jsval v) +{ + if (JSVAL_IS_STRING(v)) + return js_QuoteString(cx, JSVAL_TO_STRING(v), '"'); + if (JSVAL_IS_PRIMITIVE(v)) { + /* Special case to preserve negative zero, _contra_ toString. */ + if (JSVAL_IS_DOUBLE(v) && JSDOUBLE_IS_NEGZERO(*JSVAL_TO_DOUBLE(v))) { + /* NB: _ucNstr rather than _ucstr to indicate non-terminated. */ + static const jschar js_negzero_ucNstr[] = {'-', '0'}; + + return js_NewStringCopyN(cx, js_negzero_ucNstr, 2, 0); + } + } else { + if (!js_TryMethod(cx, JSVAL_TO_OBJECT(v), + cx->runtime->atomState.toSourceAtom, + 0, NULL, &v)) { + return NULL; + } + } + return js_ValueToString(cx, v); +} + +JSHashNumber +js_HashString(JSString *str) +{ + JSHashNumber h; + const jschar *s; + size_t n; + + h = 0; + for (s = JSSTRING_CHARS(str), n = JSSTRING_LENGTH(str); n; s++, n--) + h = (h >> (JS_HASH_BITS - 4)) ^ (h << 4) ^ *s; + return h; +} + +intN +js_CompareStrings(JSString *str1, JSString *str2) +{ + size_t l1, l2, n, i; + const jschar *s1, *s2; + intN cmp; + + l1 = JSSTRING_LENGTH(str1), l2 = JSSTRING_LENGTH(str2); + s1 = JSSTRING_CHARS(str1), s2 = JSSTRING_CHARS(str2); + n = JS_MIN(l1, l2); + for (i = 0; i < n; i++) { + cmp = s1[i] - s2[i]; + if (cmp != 0) + return cmp; + } + return (intN)(l1 - l2); +} + +size_t +js_strlen(const jschar *s) +{ + const jschar *t; + + for (t = s; *t != 0; t++) + continue; + return (size_t)(t - s); +} + +jschar * +js_strchr(const jschar *s, jschar c) +{ + while (*s != 0) { + if (*s == c) + return (jschar *)s; + s++; + } + return NULL; +} + +jschar * +js_strchr_limit(const jschar *s, jschar c, const jschar *limit) +{ + while (s < limit) { + if (*s == c) + return (jschar *)s; + s++; + } + return NULL; +} + +const jschar * +js_SkipWhiteSpace(const jschar *s) +{ + /* JS_ISSPACE is false on a null. */ + while (JS_ISSPACE(*s)) + s++; + return s; +} + +#define INFLATE_STRING_BODY \ + for (i = 0; i < length; i++) \ + chars[i] = (unsigned char) bytes[i]; \ + chars[i] = 0; + +void +js_InflateStringToBuffer(jschar *chars, const char *bytes, size_t length) +{ + size_t i; + + INFLATE_STRING_BODY +} + +jschar * +js_InflateString(JSContext *cx, const char *bytes, size_t length) +{ + jschar *chars; + size_t i; + + chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!chars) + return NULL; + + INFLATE_STRING_BODY + return chars; +} + +#define DEFLATE_STRING_BODY \ + for (i = 0; i < length; i++) \ + bytes[i] = (char) chars[i]; \ + bytes[i] = 0; + +void +js_DeflateStringToBuffer(char *bytes, const jschar *chars, size_t length) +{ + size_t i; + + DEFLATE_STRING_BODY +} + +/* + * May be called with null cx by js_GetStringBytes, see below. + */ +char * +js_DeflateString(JSContext *cx, const jschar *chars, size_t length) +{ + size_t i, size; + char *bytes; + + size = (length + 1) * sizeof(char); + bytes = (char *) (cx ? JS_malloc(cx, size) : malloc(size)); + if (!bytes) + return NULL; + + DEFLATE_STRING_BODY + return bytes; +} + +static JSHashTable * +GetDeflatedStringCache(void) +{ + JSHashTable *cache; + + cache = deflated_string_cache; + if (!cache) { + cache = JS_NewHashTable(8, js_hash_string_pointer, + JS_CompareValues, JS_CompareValues, + NULL, NULL); + deflated_string_cache = cache; + } + return cache; +} + +JSBool +js_SetStringBytes(JSString *str, char *bytes, size_t length) +{ + JSHashTable *cache; + JSBool ok; + JSHashNumber hash; + JSHashEntry **hep; + + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + + cache = GetDeflatedStringCache(); + if (!cache) { + ok = JS_FALSE; + } else { + hash = js_hash_string_pointer(str); + hep = JS_HashTableRawLookup(cache, hash, str); + JS_ASSERT(*hep == NULL); + ok = JS_HashTableRawAdd(cache, hep, hash, str, bytes) != NULL; +#ifdef DEBUG + if (ok) + deflated_string_cache_bytes += length; +#endif + } + + JS_RELEASE_LOCK(deflated_string_cache_lock); + return ok; +} + +char * +js_GetStringBytes(JSString *str) +{ + JSHashTable *cache; + char *bytes; + JSHashNumber hash; + JSHashEntry *he, **hep; + + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + + cache = GetDeflatedStringCache(); + if (!cache) { + bytes = NULL; + } else { + hash = js_hash_string_pointer(str); + hep = JS_HashTableRawLookup(cache, hash, str); + he = *hep; + if (he) { + bytes = (char *) he->value; + + /* Try to catch failure to JS_ShutDown between runtime epochs. */ + JS_ASSERT((*bytes == '\0' && JSSTRING_LENGTH(str) == 0) || + *bytes == (char) JSSTRING_CHARS(str)[0]); + } else { + bytes = js_DeflateString(NULL, JSSTRING_CHARS(str), + JSSTRING_LENGTH(str)); + if (bytes) { + if (JS_HashTableRawAdd(cache, hep, hash, str, bytes)) { +#ifdef DEBUG + deflated_string_cache_bytes += JSSTRING_LENGTH(str); +#endif + } else { + free(bytes); + bytes = NULL; + } + } + } + } + + JS_RELEASE_LOCK(deflated_string_cache_lock); + return bytes; +} + +/* + * From java.lang.Character.java: + * + * The character properties are currently encoded into 32 bits in the + * following manner: + * + * 10 bits signed offset used for converting case + * 1 bit if 1, adding the signed offset converts the character to + * lowercase + * 1 bit if 1, subtracting the signed offset converts the character to + * uppercase + * 1 bit if 1, character has a titlecase equivalent (possibly itself) + * 3 bits 0 may not be part of an identifier + * 1 ignorable control; may continue a Unicode identifier or JS + * identifier + * 2 may continue a JS identifier but not a Unicode identifier + * (unused) + * 3 may continue a Unicode identifier or JS identifier + * 4 is a JS whitespace character + * 5 may start or continue a JS identifier; + * may continue but not start a Unicode identifier (_) + * 6 may start or continue a JS identifier but not a Unicode + * identifier ($) + * 7 may start or continue a Unicode identifier or JS identifier + * Thus: + * 5, 6, 7 may start a JS identifier + * 1, 2, 3, 5, 6, 7 may continue a JS identifier + * 7 may start a Unicode identifier + * 1, 3, 5, 7 may continue a Unicode identifier + * 1 is ignorable within an identifier + * 4 is JS whitespace + * 2 bits 0 this character has no numeric property + * 1 adding the digit offset to the character code and then + * masking with 0x1F will produce the desired numeric value + * 2 this character has a "strange" numeric value + * 3 a JS supradecimal digit: adding the digit offset to the + * character code, then masking with 0x1F, then adding 10 + * will produce the desired numeric value + * 5 bits digit offset + * 1 bit XML 1.0 name start character + * 1 bit XML 1.0 name character + * 2 bits reserved for future use + * 5 bits character type + */ + +/* The X table has 1024 entries for a total of 1024 bytes. */ + +const uint8 js_X[] = { + 0, 1, 2, 3, 4, 5, 6, 7, /* 0x0000 */ + 8, 9, 10, 11, 12, 13, 14, 15, /* 0x0200 */ + 16, 17, 18, 19, 20, 21, 22, 23, /* 0x0400 */ + 24, 25, 26, 27, 28, 28, 28, 28, /* 0x0600 */ + 28, 28, 28, 28, 29, 30, 31, 32, /* 0x0800 */ + 33, 34, 35, 36, 37, 38, 39, 40, /* 0x0A00 */ + 41, 42, 43, 44, 45, 46, 28, 28, /* 0x0C00 */ + 47, 48, 49, 50, 51, 52, 53, 28, /* 0x0E00 */ + 28, 28, 54, 55, 56, 57, 58, 59, /* 0x1000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1C00 */ + 60, 60, 61, 62, 63, 64, 65, 66, /* 0x1E00 */ + 67, 68, 69, 70, 71, 72, 73, 74, /* 0x2000 */ + 75, 75, 75, 76, 77, 78, 28, 28, /* 0x2200 */ + 79, 80, 81, 82, 83, 83, 84, 85, /* 0x2400 */ + 86, 85, 28, 28, 87, 88, 89, 28, /* 0x2600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2C00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2E00 */ + 90, 91, 92, 93, 94, 56, 95, 28, /* 0x3000 */ + 96, 97, 98, 99, 83, 100, 83, 101, /* 0x3200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3C00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3E00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x4E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9C00 */ + 56, 56, 56, 56, 56, 56, 102, 28, /* 0x9E00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xAA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xAC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xAE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD400 */ + 56, 56, 56, 56, 56, 56, 103, 28, /* 0xD600 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xD800 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDA00 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDC00 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDE00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE000 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE200 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE400 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE600 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE800 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEA00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEC00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEE00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF000 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF200 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF400 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF600 */ +105, 105, 105, 105, 56, 56, 56, 56, /* 0xF800 */ +106, 28, 28, 28, 107, 108, 109, 110, /* 0xFA00 */ + 56, 56, 56, 56, 111, 112, 113, 114, /* 0xFC00 */ +115, 116, 56, 117, 118, 119, 120, 121 /* 0xFE00 */ +}; + +/* The Y table has 7808 entries for a total of 7808 bytes. */ + +const uint8 js_Y[] = { + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 0, 1, 1, 1, 1, 1, 0, 0, /* 0 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 2, 3, 3, 3, 4, 3, 3, 3, /* 0 */ + 5, 6, 3, 7, 3, 8, 3, 3, /* 0 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 0 */ + 9, 9, 3, 3, 7, 7, 7, 3, /* 0 */ + 3, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 5, 3, 6, 11, 12, /* 1 */ + 11, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 5, 7, 6, 7, 0, /* 1 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 2, 3, 4, 4, 4, 4, 15, 15, /* 2 */ + 11, 15, 16, 5, 7, 8, 15, 11, /* 2 */ + 15, 7, 17, 17, 11, 16, 15, 3, /* 2 */ + 11, 18, 16, 6, 19, 19, 19, 3, /* 2 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 7, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 16, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 7, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 22, /* 3 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 25, 26, 23, 24, 23, 24, 23, 24, /* 4 */ + 16, 23, 24, 23, 24, 23, 24, 23, /* 4 */ + 24, 23, 24, 23, 24, 23, 24, 23, /* 5 */ + 24, 16, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 27, 23, 24, 23, 24, 23, 24, 28, /* 5 */ + 16, 29, 23, 24, 23, 24, 30, 23, /* 6 */ + 24, 31, 31, 23, 24, 16, 32, 32, /* 6 */ + 33, 23, 24, 31, 34, 16, 35, 36, /* 6 */ + 23, 24, 16, 16, 35, 37, 16, 38, /* 6 */ + 23, 24, 23, 24, 23, 24, 38, 23, /* 6 */ + 24, 39, 40, 16, 23, 24, 39, 23, /* 6 */ + 24, 41, 41, 23, 24, 23, 24, 42, /* 6 */ + 23, 24, 16, 40, 23, 24, 40, 40, /* 6 */ + 40, 40, 40, 40, 43, 44, 45, 43, /* 7 */ + 44, 45, 43, 44, 45, 23, 24, 23, /* 7 */ + 24, 23, 24, 23, 24, 23, 24, 23, /* 7 */ + 24, 23, 24, 23, 24, 16, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 7 */ + 16, 43, 44, 45, 23, 24, 46, 46, /* 7 */ + 46, 46, 23, 24, 23, 24, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 9 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 9 */ + 16, 16, 16, 47, 48, 16, 49, 49, /* 9 */ + 50, 50, 16, 51, 16, 16, 16, 16, /* 9 */ + 49, 16, 16, 52, 16, 16, 16, 16, /* 9 */ + 53, 54, 16, 16, 16, 16, 16, 54, /* 9 */ + 16, 16, 55, 16, 16, 16, 16, 16, /* 9 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 9 */ + 16, 16, 16, 56, 16, 16, 16, 16, /* 10 */ + 56, 16, 57, 57, 16, 16, 16, 16, /* 10 */ + 16, 16, 58, 16, 16, 16, 16, 16, /* 10 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 10 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 10 */ + 16, 46, 46, 46, 46, 46, 46, 46, /* 10 */ + 59, 59, 59, 59, 59, 59, 59, 59, /* 10 */ + 59, 11, 11, 59, 59, 59, 59, 59, /* 10 */ + 59, 59, 11, 11, 11, 11, 11, 11, /* 11 */ + 11, 11, 11, 11, 11, 11, 11, 11, /* 11 */ + 59, 59, 11, 11, 11, 11, 11, 11, /* 11 */ + 11, 11, 11, 11, 11, 11, 11, 46, /* 11 */ + 59, 59, 59, 59, 59, 11, 11, 11, /* 11 */ + 11, 11, 46, 46, 46, 46, 46, 46, /* 11 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 11 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 11 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 60, 60, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 3, 3, 46, 46, /* 13 */ + 46, 46, 59, 46, 46, 46, 3, 46, /* 13 */ + 46, 46, 46, 46, 11, 11, 61, 3, /* 14 */ + 62, 62, 62, 46, 63, 46, 64, 64, /* 14 */ + 16, 20, 20, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 46, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 20, 20, 65, 66, 66, 66, /* 14 */ + 16, 21, 21, 21, 21, 21, 21, 21, /* 14 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 14 */ + 21, 21, 16, 21, 21, 21, 21, 21, /* 15 */ + 21, 21, 21, 21, 67, 68, 68, 46, /* 15 */ + 69, 70, 38, 38, 38, 71, 72, 46, /* 15 */ + 46, 46, 38, 46, 38, 46, 38, 46, /* 15 */ + 38, 46, 23, 24, 23, 24, 23, 24, /* 15 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 15 */ + 73, 74, 16, 40, 46, 46, 46, 46, /* 15 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 15 */ + 46, 75, 75, 75, 75, 75, 75, 75, /* 16 */ + 75, 75, 75, 75, 75, 46, 75, 75, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 17 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 17 */ + 46, 74, 74, 74, 74, 74, 74, 74, /* 17 */ + 74, 74, 74, 74, 74, 46, 74, 74, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 15, 60, 60, 60, 60, 46, /* 18 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 40, 23, 24, 23, 24, 46, 46, 23, /* 19 */ + 24, 46, 46, 23, 24, 46, 46, 46, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 46, 46, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 46, 46, /* 19 */ + 23, 24, 46, 46, 46, 46, 46, 46, /* 19 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 76, 76, 76, 76, 76, 76, 76, /* 20 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 20 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 21 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 21 */ + 76, 76, 76, 76, 76, 76, 76, 46, /* 21 */ + 46, 59, 3, 3, 3, 3, 3, 3, /* 21 */ + 46, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 16, /* 22 */ + 46, 3, 46, 46, 46, 46, 46, 46, /* 22 */ + 46, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 46, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 46, 60, 60, 60, 3, 60, /* 22 */ + 3, 60, 60, 3, 60, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 46, 46, 46, 46, 46, /* 23 */ + 40, 40, 40, 3, 3, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 24 */ + 46, 46, 46, 46, 3, 46, 46, 46, /* 24 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 24 */ + 46, 46, 46, 3, 46, 46, 46, 3, /* 24 */ + 46, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 46, 46, 46, 46, 46, /* 24 */ + 59, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 60, 60, 60, 60, 60, /* 25 */ + 60, 60, 60, 46, 46, 46, 46, 46, /* 25 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 25 */ + 78, 78, 78, 78, 78, 78, 78, 78, /* 25 */ + 78, 78, 3, 3, 3, 3, 46, 46, /* 25 */ + 60, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 46, 46, 40, 40, 40, 40, 40, 46, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 27 */ + 40, 40, 40, 40, 40, 40, 40, 46, /* 27 */ + 40, 40, 40, 40, 3, 40, 60, 60, /* 27 */ + 60, 60, 60, 60, 60, 79, 79, 60, /* 27 */ + 60, 60, 60, 60, 60, 59, 59, 60, /* 27 */ + 60, 15, 60, 60, 60, 60, 46, 46, /* 27 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 27 */ + 9, 9, 46, 46, 46, 46, 46, 46, /* 27 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 60, 60, 80, 46, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 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*/ + 40, 40, 40, 40, 40, 40, 40, 40, /* 110 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 110 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 5, 6, /* 111 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 112 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 114 */ + 40, 40, 40, 40, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 60, 60, 60, 60, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 3, 8, 8, 12, 12, 5, 6, 5, /* 115 */ + 6, 5, 6, 5, 6, 5, 6, 5, /* 115 */ + 6, 5, 6, 5, 6, 46, 46, 46, /* 116 */ + 46, 3, 3, 3, 3, 12, 12, 12, /* 116 */ + 3, 3, 3, 46, 3, 3, 3, 3, /* 116 */ + 8, 5, 6, 5, 6, 5, 6, 3, /* 116 */ + 3, 3, 7, 8, 7, 7, 7, 46, /* 116 */ + 3, 4, 3, 3, 46, 46, 46, 46, /* 116 */ + 40, 40, 40, 46, 40, 46, 40, 40, /* 116 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 116 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 46, 46, 104, /* 117 */ + 46, 3, 3, 3, 4, 3, 3, 3, /* 118 */ + 5, 6, 3, 7, 3, 8, 3, 3, /* 118 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 118 */ + 9, 9, 3, 3, 7, 7, 7, 3, /* 118 */ + 3, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 5, 3, 6, 11, 12, /* 118 */ + 11, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 5, 7, 6, 7, 46, /* 119 */ + 46, 3, 5, 6, 3, 3, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 59, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 59, 59, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 46, /* 120 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 46, 46, 46, /* 121 */ + 4, 4, 7, 11, 15, 4, 4, 46, /* 121 */ + 7, 7, 7, 7, 7, 15, 15, 46, /* 121 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 121 */ + 46, 46, 46, 46, 46, 15, 46, 46 /* 121 */ +}; + +/* The A table has 124 entries for a total of 496 bytes. */ + +const uint32 js_A[] = { +0x0001000F, /* 0 Cc, ignorable */ +0x0004000F, /* 1 Cc, whitespace */ +0x0004000C, /* 2 Zs, whitespace */ +0x00000018, /* 3 Po */ +0x0006001A, /* 4 Sc, currency */ +0x00000015, /* 5 Ps */ +0x00000016, /* 6 Pe */ +0x00000019, /* 7 Sm */ +0x00000014, /* 8 Pd */ +0x00036089, /* 9 Nd, identifier part, decimal 16 */ +0x0827FF81, /* 10 Lu, hasLower (add 32), identifier start, supradecimal 31 */ +0x0000001B, /* 11 Sk */ +0x00050017, /* 12 Pc, underscore */ +0x0817FF82, /* 13 Ll, hasUpper (subtract 32), identifier start, supradecimal 31 */ +0x0000000C, /* 14 Zs */ +0x0000001C, /* 15 So */ +0x00070182, /* 16 Ll, identifier start */ +0x0000600B, /* 17 No, decimal 16 */ +0x0000500B, /* 18 No, decimal 8 */ +0x0000800B, /* 19 No, strange */ +0x08270181, /* 20 Lu, hasLower (add 32), identifier start */ +0x08170182, /* 21 Ll, hasUpper (subtract 32), identifier start */ +0xE1D70182, /* 22 Ll, hasUpper (subtract -121), identifier start */ +0x00670181, /* 23 Lu, hasLower (add 1), identifier start */ +0x00570182, /* 24 Ll, hasUpper (subtract 1), identifier start */ +0xCE670181, /* 25 Lu, hasLower (add -199), identifier start */ +0x3A170182, /* 26 Ll, hasUpper (subtract 232), identifier start */ +0xE1E70181, /* 27 Lu, hasLower (add -121), identifier start */ +0x4B170182, /* 28 Ll, hasUpper (subtract 300), identifier start */ +0x34A70181, /* 29 Lu, hasLower (add 210), identifier start */ +0x33A70181, /* 30 Lu, hasLower (add 206), identifier start */ +0x33670181, /* 31 Lu, hasLower (add 205), identifier start */ +0x32A70181, /* 32 Lu, hasLower (add 202), identifier start */ +0x32E70181, /* 33 Lu, hasLower (add 203), identifier start */ +0x33E70181, /* 34 Lu, hasLower (add 207), identifier start */ +0x34E70181, /* 35 Lu, hasLower (add 211), identifier start */ +0x34670181, /* 36 Lu, hasLower (add 209), identifier start */ +0x35670181, /* 37 Lu, hasLower (add 213), identifier start */ +0x00070181, /* 38 Lu, identifier start */ +0x36A70181, /* 39 Lu, hasLower (add 218), identifier start */ +0x00070185, /* 40 Lo, identifier start */ +0x36670181, /* 41 Lu, hasLower (add 217), identifier start */ +0x36E70181, /* 42 Lu, hasLower (add 219), identifier start */ +0x00AF0181, /* 43 Lu, hasLower (add 2), hasTitle, identifier start */ +0x007F0183, /* 44 Lt, hasUpper (subtract 1), hasLower (add 1), hasTitle, identifier start */ +0x009F0182, /* 45 Ll, hasUpper (subtract 2), hasTitle, identifier start */ +0x00000000, /* 46 unassigned */ +0x34970182, /* 47 Ll, hasUpper (subtract 210), identifier start */ +0x33970182, /* 48 Ll, hasUpper (subtract 206), identifier start */ +0x33570182, /* 49 Ll, hasUpper (subtract 205), identifier start */ +0x32970182, /* 50 Ll, hasUpper (subtract 202), identifier start */ +0x32D70182, /* 51 Ll, hasUpper (subtract 203), identifier start */ +0x33D70182, /* 52 Ll, hasUpper (subtract 207), identifier start */ +0x34570182, /* 53 Ll, hasUpper (subtract 209), identifier start */ +0x34D70182, /* 54 Ll, hasUpper (subtract 211), identifier start */ +0x35570182, /* 55 Ll, hasUpper (subtract 213), identifier start */ +0x36970182, /* 56 Ll, hasUpper (subtract 218), identifier start */ +0x36570182, /* 57 Ll, hasUpper (subtract 217), identifier start */ +0x36D70182, /* 58 Ll, hasUpper (subtract 219), identifier start */ +0x00070084, /* 59 Lm, identifier start */ +0x00030086, /* 60 Mn, identifier part */ +0x09A70181, /* 61 Lu, hasLower (add 38), identifier start */ +0x09670181, /* 62 Lu, hasLower (add 37), identifier start */ +0x10270181, /* 63 Lu, hasLower (add 64), identifier start */ +0x0FE70181, /* 64 Lu, hasLower (add 63), identifier start */ +0x09970182, /* 65 Ll, hasUpper (subtract 38), identifier start */ +0x09570182, /* 66 Ll, hasUpper (subtract 37), identifier start */ +0x10170182, /* 67 Ll, hasUpper (subtract 64), identifier start */ +0x0FD70182, /* 68 Ll, hasUpper (subtract 63), identifier start */ +0x0F970182, /* 69 Ll, hasUpper (subtract 62), identifier start */ +0x0E570182, /* 70 Ll, hasUpper (subtract 57), identifier start */ +0x0BD70182, /* 71 Ll, hasUpper (subtract 47), identifier start */ +0x0D970182, /* 72 Ll, hasUpper (subtract 54), identifier start */ +0x15970182, /* 73 Ll, hasUpper (subtract 86), identifier start */ +0x14170182, /* 74 Ll, hasUpper (subtract 80), identifier start */ +0x14270181, /* 75 Lu, hasLower (add 80), identifier start */ +0x0C270181, /* 76 Lu, hasLower (add 48), identifier start */ +0x0C170182, /* 77 Ll, hasUpper (subtract 48), identifier start */ +0x00034089, /* 78 Nd, identifier part, decimal 0 */ +0x00000087, /* 79 Me */ +0x00030088, /* 80 Mc, identifier part */ +0x00037489, /* 81 Nd, identifier part, decimal 26 */ +0x00005A0B, /* 82 No, decimal 13 */ +0x00006E0B, /* 83 No, decimal 23 */ +0x0000740B, /* 84 No, decimal 26 */ +0x0000000B, /* 85 No */ +0xFE170182, /* 86 Ll, hasUpper (subtract -8), identifier start */ +0xFE270181, /* 87 Lu, hasLower (add -8), identifier start */ +0xED970182, /* 88 Ll, hasUpper (subtract -74), identifier start */ +0xEA970182, /* 89 Ll, hasUpper (subtract -86), identifier start */ +0xE7170182, /* 90 Ll, hasUpper (subtract -100), identifier start */ +0xE0170182, /* 91 Ll, hasUpper (subtract -128), identifier start */ +0xE4170182, /* 92 Ll, hasUpper (subtract -112), identifier start */ +0xE0970182, /* 93 Ll, hasUpper (subtract -126), identifier start */ +0xFDD70182, /* 94 Ll, hasUpper (subtract -9), identifier start */ +0xEDA70181, /* 95 Lu, hasLower (add -74), identifier start */ +0xFDE70181, /* 96 Lu, hasLower (add -9), identifier start */ +0xEAA70181, /* 97 Lu, hasLower (add -86), identifier start */ +0xE7270181, /* 98 Lu, hasLower (add -100), identifier start */ +0xFE570182, /* 99 Ll, hasUpper (subtract -7), identifier start */ +0xE4270181, /* 100 Lu, hasLower (add -112), identifier start */ +0xFE670181, /* 101 Lu, hasLower (add -7), identifier start */ +0xE0270181, /* 102 Lu, hasLower (add -128), identifier start */ +0xE0A70181, /* 103 Lu, hasLower (add -126), identifier start */ +0x00010010, /* 104 Cf, ignorable */ +0x0004000D, /* 105 Zl, whitespace */ +0x0004000E, /* 106 Zp, whitespace */ +0x0000400B, /* 107 No, decimal 0 */ +0x0000440B, /* 108 No, decimal 2 */ +0x0427438A, /* 109 Nl, hasLower (add 16), identifier start, decimal 1 */ +0x0427818A, /* 110 Nl, hasLower (add 16), identifier start, strange */ +0x0417638A, /* 111 Nl, hasUpper (subtract 16), identifier start, decimal 17 */ +0x0417818A, /* 112 Nl, hasUpper (subtract 16), identifier start, strange */ +0x0007818A, /* 113 Nl, identifier start, strange */ +0x0000420B, /* 114 No, decimal 1 */ +0x0000720B, /* 115 No, decimal 25 */ +0x06A0001C, /* 116 So, hasLower (add 26) */ +0x0690001C, /* 117 So, hasUpper (subtract 26) */ +0x00006C0B, /* 118 No, decimal 22 */ +0x0000560B, /* 119 No, decimal 11 */ +0x0007738A, /* 120 Nl, identifier start, decimal 25 */ +0x0007418A, /* 121 Nl, identifier start, decimal 0 */ +0x00000013, /* 122 Cs */ +0x00000012 /* 123 Co */ +}; + +const jschar js_uriReservedPlusPound_ucstr[] = + {';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '#', 0}; +const jschar js_uriUnescaped_ucstr[] = + {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + '-', '_', '.', '!', '~', '*', '\'', '(', ')', 0}; + +#define URI_CHUNK 64U + +/* Concatenate jschars onto an unshared/newborn JSString. */ +static JSBool +AddCharsToURI(JSContext *cx, JSString *str, const jschar *chars, size_t length) +{ + size_t total; + + JS_ASSERT(!JSSTRING_IS_DEPENDENT(str)); + total = str->length + length + 1; + if (!str->chars || + JS_HOWMANY(total, URI_CHUNK) > JS_HOWMANY(str->length + 1, URI_CHUNK)) { + total = JS_ROUNDUP(total, URI_CHUNK); + str->chars = JS_realloc(cx, str->chars, total * sizeof(jschar)); + if (!str->chars) + return JS_FALSE; + } + js_strncpy(str->chars + str->length, chars, length); + str->length += length; + str->chars[str->length] = 0; + return JS_TRUE; +} + +/* + * ECMA 3, 15.1.3 URI Handling Function Properties + * + * The following are implementations of the algorithms + * given in the ECMA specification for the hidden functions + * 'Encode' and 'Decode'. + */ +static JSBool +Encode(JSContext *cx, JSString *str, const jschar *unescapedSet, + const jschar *unescapedSet2, jsval *rval) +{ + size_t length, j, k, L; + jschar *chars, C, C2; + uint32 V; + uint8 utf8buf[6]; + jschar hexBuf[4]; + static const char HexDigits[] = "0123456789ABCDEF"; /* NB: uppercase */ + JSString *R; + + length = JSSTRING_LENGTH(str); + if (length == 0) { + *rval = STRING_TO_JSVAL(cx->runtime->emptyString); + return JS_TRUE; + } + + R = js_NewString(cx, NULL, 0, 0); + if (!R) + return JS_FALSE; + + hexBuf[0] = '%'; + hexBuf[3] = 0; + chars = JSSTRING_CHARS(str); + for (k = 0; k < length; k++) { + C = chars[k]; + if (js_strchr(unescapedSet, C) || + (unescapedSet2 && js_strchr(unescapedSet2, C))) { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } else { + if ((C >= 0xDC00) && (C <= 0xDFFF)) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + if (C < 0xD800 || C > 0xDBFF) { + V = C; + } else { + k++; + if (k == length) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + C2 = chars[k]; + if ((C2 < 0xDC00) || (C2 > 0xDFFF)) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + V = ((C - 0xD800) << 10) + (C2 - 0xDC00) + 0x10000; + } + L = OneUcs4ToUtf8Char(utf8buf, V); + for (j = 0; j < L; j++) { + hexBuf[1] = HexDigits[utf8buf[j] >> 4]; + hexBuf[2] = HexDigits[utf8buf[j] & 0xf]; + if (!AddCharsToURI(cx, R, hexBuf, 3)) + return JS_FALSE; + } + } + } + + /* + * Shrinking realloc can fail (e.g., with a BSD-style allocator), but we + * don't worry about that case here. Worst case, R hangs onto URI_CHUNK-1 + * more jschars than it needs. + */ + chars = (jschar *) JS_realloc(cx, R->chars, (R->length+1) * sizeof(jschar)); + if (chars) + R->chars = chars; + *rval = STRING_TO_JSVAL(R); + return JS_TRUE; +} + +static JSBool +Decode(JSContext *cx, JSString *str, const jschar *reservedSet, jsval *rval) +{ + size_t length, start, k; + jschar *chars, C, H; + uint32 V; + jsuint B; + uint8 octets[6]; + JSString *R; + intN j, n; + + length = JSSTRING_LENGTH(str); + if (length == 0) { + *rval = STRING_TO_JSVAL(cx->runtime->emptyString); + return JS_TRUE; + } + + R = js_NewString(cx, NULL, 0, 0); + if (!R) + return JS_FALSE; + + chars = JSSTRING_CHARS(str); + for (k = 0; k < length; k++) { + C = chars[k]; + if (C == '%') { + start = k; + if ((k + 2) >= length) + goto bad; + if (!JS7_ISHEX(chars[k+1]) || !JS7_ISHEX(chars[k+2])) + goto bad; + B = JS7_UNHEX(chars[k+1]) * 16 + JS7_UNHEX(chars[k+2]); + k += 2; + if (!(B & 0x80)) { + C = (jschar)B; + } else { + n = 1; + while (B & (0x80 >> n)) + n++; + if (n == 1 || n > 6) + goto bad; + octets[0] = (uint8)B; + if (k + 3 * (n - 1) >= length) + goto bad; + for (j = 1; j < n; j++) { + k++; + if (chars[k] != '%') + goto bad; + if (!JS7_ISHEX(chars[k+1]) || !JS7_ISHEX(chars[k+2])) + goto bad; + B = JS7_UNHEX(chars[k+1]) * 16 + JS7_UNHEX(chars[k+2]); + if ((B & 0xC0) != 0x80) + goto bad; + k += 2; + octets[j] = (char)B; + } + V = Utf8ToOneUcs4Char(octets, n); + if (V >= 0x10000) { + V -= 0x10000; + if (V > 0xFFFFF) + goto bad; + C = (jschar)((V & 0x3FF) + 0xDC00); + H = (jschar)((V >> 10) + 0xD800); + if (!AddCharsToURI(cx, R, &H, 1)) + return JS_FALSE; + } else { + C = (jschar)V; + } + } + if (js_strchr(reservedSet, C)) { + if (!AddCharsToURI(cx, R, &chars[start], (k - start + 1))) + return JS_FALSE; + } else { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } + } else { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } + } + + /* + * Shrinking realloc can fail (e.g., with a BSD-style allocator), but we + * don't worry about that case here. Worst case, R hangs onto URI_CHUNK-1 + * more jschars than it needs. + */ + chars = (jschar *) JS_realloc(cx, R->chars, (R->length+1) * sizeof(jschar)); + if (chars) + R->chars = chars; + *rval = STRING_TO_JSVAL(R); + return JS_TRUE; + +bad: + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_URI); + return JS_FALSE; +} + +static JSBool +str_decodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Decode(cx, str, js_uriReservedPlusPound_ucstr, rval); +} + +static JSBool +str_decodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Decode(cx, str, js_empty_ucstr, rval); +} + +static JSBool +str_encodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Encode(cx, str, js_uriReservedPlusPound_ucstr, js_uriUnescaped_ucstr, + rval); +} + +static JSBool +str_encodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Encode(cx, str, js_uriUnescaped_ucstr, NULL, rval); +} + +/* + * Convert one UCS-4 char and write it into a UTF-8 buffer, which must be at + * least 6 bytes long. Return the number of UTF-8 bytes of data written. + */ +static int +OneUcs4ToUtf8Char(uint8 *utf8Buffer, uint32 ucs4Char) +{ + int utf8Length = 1; + + JS_ASSERT(ucs4Char <= 0x7FFFFFFF); + if (ucs4Char < 0x80) { + *utf8Buffer = (uint8)ucs4Char; + } else { + int i; + uint32 a = ucs4Char >> 11; + utf8Length = 2; + while (a) { + a >>= 5; + utf8Length++; + } + i = utf8Length; + while (--i) { + utf8Buffer[i] = (uint8)((ucs4Char & 0x3F) | 0x80); + ucs4Char >>= 6; + } + *utf8Buffer = (uint8)(0x100 - (1 << (8-utf8Length)) + ucs4Char); + } + return utf8Length; +} + +/* + * Convert a utf8 character sequence into a UCS-4 character and return that + * character. It is assumed that the caller already checked that the sequence + * is valid. + */ +static uint32 +Utf8ToOneUcs4Char(const uint8 *utf8Buffer, int utf8Length) +{ + uint32 ucs4Char; + uint32 minucs4Char; + /* from Unicode 3.1, non-shortest form is illegal */ + static const uint32 minucs4Table[] = { + 0x00000080, 0x00000800, 0x0001000, 0x0020000, 0x0400000 + }; + + JS_ASSERT(utf8Length >= 1 && utf8Length <= 6); + if (utf8Length == 1) { + ucs4Char = *utf8Buffer; + JS_ASSERT(!(ucs4Char & 0x80)); + } else { + JS_ASSERT((*utf8Buffer & (0x100 - (1 << (7-utf8Length)))) == + (0x100 - (1 << (8-utf8Length)))); + ucs4Char = *utf8Buffer++ & ((1<<(7-utf8Length))-1); + minucs4Char = minucs4Table[utf8Length-2]; + while (--utf8Length) { + JS_ASSERT((*utf8Buffer & 0xC0) == 0x80); + ucs4Char = ucs4Char<<6 | (*utf8Buffer++ & 0x3F); + } + if (ucs4Char < minucs4Char || + ucs4Char == 0xFFFE || ucs4Char == 0xFFFF) { + ucs4Char = 0xFFFD; + } + } + return ucs4Char; +} Index: ossp-pkg/js/src/jsstr.c RCS File: /v/ossp/cvs/ossp-pkg/js/src/jsstr.c,v co -q -kk -p'1.1.1.1' '/v/ossp/cvs/ossp-pkg/js/src/jsstr.c,v' | diff -u /dev/null - -L'ossp-pkg/js/src/jsstr.c' 2>/dev/null --- ossp-pkg/js/src/jsstr.c +++ - 2025-05-20 20:57:57.741105350 +0200 @@ -0,0 +1,4645 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * vim: set ts=8 sw=4 et tw=80: + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* + * JS string type implementation. + * + * In order to avoid unnecessary js_LockGCThing/js_UnlockGCThing calls, these + * native methods store strings (possibly newborn) converted from their 'this' + * parameter and arguments on the stack: 'this' conversions at argv[-1], arg + * conversions at their index (argv[0], argv[1]). This is a legitimate method + * of rooting things that might lose their newborn root due to subsequent GC + * allocations in the same native method. + */ +#include "jsstddef.h" +#include +#include +#include "jstypes.h" +#include "jsutil.h" /* Added by JSIFY */ +#include "jshash.h" /* Added by JSIFY */ +#include "jsprf.h" +#include "jsapi.h" +#include "jsarray.h" +#include "jsatom.h" +#include "jsbool.h" +#include "jscntxt.h" +#include "jsconfig.h" +#include "jsgc.h" +#include "jsinterp.h" +#include "jslock.h" +#include "jsnum.h" +#include "jsobj.h" +#include "jsopcode.h" +#include "jsregexp.h" +#include "jsstr.h" + +#if JS_HAS_REPLACE_LAMBDA +#include "jsinterp.h" +#endif + +#define JSSTRDEP_RECURSION_LIMIT 100 + +size_t +js_MinimizeDependentStrings(JSString *str, int level, JSString **basep) +{ + JSString *base; + size_t start, length; + + JS_ASSERT(JSSTRING_IS_DEPENDENT(str)); + base = JSSTRDEP_BASE(str); + start = JSSTRDEP_START(str); + if (JSSTRING_IS_DEPENDENT(base)) { + if (level < JSSTRDEP_RECURSION_LIMIT) { + start += js_MinimizeDependentStrings(base, level + 1, &base); + } else { + do { + start += JSSTRDEP_START(base); + base = JSSTRDEP_BASE(base); + } while (JSSTRING_IS_DEPENDENT(base)); + } + if (start == 0) { + JS_ASSERT(JSSTRING_IS_PREFIX(str)); + JSPREFIX_SET_BASE(str, base); + } else if (start <= JSSTRDEP_START_MASK) { + length = JSSTRDEP_LENGTH(str); + JSSTRDEP_SET_START_AND_LENGTH(str, start, length); + JSSTRDEP_SET_BASE(str, base); + } + } + *basep = base; + return start; +} + +jschar * +js_GetDependentStringChars(JSString *str) +{ + size_t start; + JSString *base; + + start = js_MinimizeDependentStrings(str, 0, &base); + JS_ASSERT(!JSSTRING_IS_DEPENDENT(base)); + JS_ASSERT(start < base->length); + return base->chars + start; +} + +jschar * +js_GetStringChars(JSString *str) +{ + if (JSSTRING_IS_DEPENDENT(str) && !js_UndependString(NULL, str)) + return NULL; + + *js_GetGCThingFlags(str) &= ~GCF_MUTABLE; + return str->chars; +} + +JSString * +js_ConcatStrings(JSContext *cx, JSString *left, JSString *right) +{ + size_t rn, ln, lrdist, n; + jschar *rs, *ls, *s; + JSDependentString *ldep; /* non-null if left should become dependent */ + JSString *str; + + if (JSSTRING_IS_DEPENDENT(right)) { + rn = JSSTRDEP_LENGTH(right); + rs = JSSTRDEP_CHARS(right); + } else { + rn = right->length; + rs = right->chars; + } + if (rn == 0) + return left; + + if (JSSTRING_IS_DEPENDENT(left) || + !(*js_GetGCThingFlags(left) & GCF_MUTABLE)) { + /* We must copy if left does not own a buffer to realloc. */ + ln = JSSTRING_LENGTH(left); + if (ln == 0) + return right; + ls = JSSTRING_CHARS(left); + s = (jschar *) JS_malloc(cx, (ln + rn + 1) * sizeof(jschar)); + if (!s) + return NULL; + js_strncpy(s, ls, ln); + ldep = NULL; + } else { + /* We can realloc left's space and make it depend on our result. */ + ln = left->length; + if (ln == 0) + return right; + ls = left->chars; + s = (jschar *) JS_realloc(cx, ls, (ln + rn + 1) * sizeof(jschar)); + if (!s) + return NULL; + + /* Take care: right could depend on left! */ + lrdist = (size_t)(rs - ls); + if (lrdist < ln) + rs = s + lrdist; + left->chars = ls = s; + ldep = JSSTRDEP(left); + } + + js_strncpy(s + ln, rs, rn); + n = ln + rn; + s[n] = 0; + str = js_NewString(cx, s, n, GCF_MUTABLE); + if (!str) { + /* Out of memory: clean up any space we (re-)allocated. */ + if (!ldep) { + JS_free(cx, s); + } else { + s = JS_realloc(cx, ls, (ln + 1) * sizeof(jschar)); + if (s) + left->chars = s; + } + } else { + /* Morph left into a dependent prefix if we realloc'd its buffer. */ + if (ldep) { + JSPREFIX_SET_LENGTH(ldep, ln); + JSPREFIX_SET_BASE(ldep, str); +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveDependentStrings); + JS_RUNTIME_METER(rt, totalDependentStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum += (double)ln, + rt->strdepLengthSquaredSum += (double)ln * (double)ln)); + } +#endif + } + } + + return str; +} + +/* + * May be called with null cx by js_GetStringChars, above; and by the jslock.c + * MAKE_STRING_IMMUTABLE file-local macro. + */ +const jschar * +js_UndependString(JSContext *cx, JSString *str) +{ + size_t n, size; + jschar *s; + + if (JSSTRING_IS_DEPENDENT(str)) { + n = JSSTRDEP_LENGTH(str); + size = (n + 1) * sizeof(jschar); + s = (jschar *) (cx ? JS_malloc(cx, size) : malloc(size)); + if (!s) + return NULL; + + js_strncpy(s, JSSTRDEP_CHARS(str), n); + s[n] = 0; + str->length = n; + str->chars = s; + +#ifdef DEBUG + if (cx) { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_UNMETER(rt, liveDependentStrings); + JS_RUNTIME_UNMETER(rt, totalDependentStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum -= (double)n, + rt->strdepLengthSquaredSum -= (double)n * (double)n)); + } +#endif + } + + return str->chars; +} + +/* + * Forward declarations for URI encode/decode and helper routines + */ +static JSBool +str_decodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_decodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_encodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static JSBool +str_encodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval); + +static int +OneUcs4ToUtf8Char(uint8 *utf8Buffer, uint32 ucs4Char); + +static uint32 +Utf8ToOneUcs4Char(const uint8 *utf8Buffer, int utf8Length); + +/* + * Contributions from the String class to the set of methods defined for the + * global object. escape and unescape used to be defined in the Mocha library, + * but as ECMA decided to spec them, they've been moved to the core engine + * and made ECMA-compliant. (Incomplete escapes are interpreted as literal + * characters by unescape.) + */ + +/* + * Stuff to emulate the old libmocha escape, which took a second argument + * giving the type of escape to perform. Retained for compatibility, and + * copied here to avoid reliance on net.h, mkparse.c/NET_EscapeBytes. + */ + +#define URL_XALPHAS ((uint8) 1) +#define URL_XPALPHAS ((uint8) 2) +#define URL_PATH ((uint8) 4) + +static const uint8 urlCharType[256] = +/* Bit 0 xalpha -- the alphas + * Bit 1 xpalpha -- as xalpha but + * converts spaces to plus and plus to %20 + * Bit 2 ... path -- as xalphas but doesn't escape '/' + */ + /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */ + { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x */ + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1x */ + 0,0,0,0,0,0,0,0,0,0,7,4,0,7,7,4, /* 2x !"#$%&'()*+,-./ */ + 7,7,7,7,7,7,7,7,7,7,0,0,0,0,0,0, /* 3x 0123456789:;<=>? */ + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 4x @ABCDEFGHIJKLMNO */ + 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,7, /* 5X PQRSTUVWXYZ[\]^_ */ + 0,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /* 6x `abcdefghijklmno */ + 7,7,7,7,7,7,7,7,7,7,7,0,0,0,0,0, /* 7X pqrstuvwxyz{\}~ DEL */ + 0, }; + +/* This matches the ECMA escape set when mask is 7 (default.) */ + +#define IS_OK(C, mask) (urlCharType[((uint8) (C))] & (mask)) + +/* See ECMA-262 15.1.2.4. */ +JSBool +js_str_escape(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + size_t i, ni, length, newlength; + const jschar *chars; + jschar *newchars; + jschar ch; + jsint mask; + jsdouble d; + const char digits[] = {'0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; + + mask = URL_XALPHAS | URL_XPALPHAS | URL_PATH; + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + if (!JSDOUBLE_IS_FINITE(d) || + (mask = (jsint)d) != d || + mask & ~(URL_XALPHAS | URL_XPALPHAS | URL_PATH)) + { + char numBuf[12]; + JS_snprintf(numBuf, sizeof numBuf, "%lx", (unsigned long) mask); + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_STRING_MASK, numBuf); + return JS_FALSE; + } + } + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + + chars = JSSTRING_CHARS(str); + length = newlength = JSSTRING_LENGTH(str); + + /* Take a first pass and see how big the result string will need to be. */ + for (i = 0; i < length; i++) { + if ((ch = chars[i]) < 128 && IS_OK(ch, mask)) + continue; + if (ch < 256) { + if (mask == URL_XPALPHAS && ch == ' ') + continue; /* The character will be encoded as '+' */ + newlength += 2; /* The character will be encoded as %XX */ + } else { + newlength += 5; /* The character will be encoded as %uXXXX */ + } + + /* + * This overflow test works because newlength is incremented by at + * most 5 on each iteration. + */ + if (newlength < length) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + } + + if (newlength >= ~(size_t)0 / sizeof(jschar)) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + + newchars = (jschar *) JS_malloc(cx, (newlength + 1) * sizeof(jschar)); + if (!newchars) + return JS_FALSE; + for (i = 0, ni = 0; i < length; i++) { + if ((ch = chars[i]) < 128 && IS_OK(ch, mask)) { + newchars[ni++] = ch; + } else if (ch < 256) { + if (mask == URL_XPALPHAS && ch == ' ') { + newchars[ni++] = '+'; /* convert spaces to pluses */ + } else { + newchars[ni++] = '%'; + newchars[ni++] = digits[ch >> 4]; + newchars[ni++] = digits[ch & 0xF]; + } + } else { + newchars[ni++] = '%'; + newchars[ni++] = 'u'; + newchars[ni++] = digits[ch >> 12]; + newchars[ni++] = digits[(ch & 0xF00) >> 8]; + newchars[ni++] = digits[(ch & 0xF0) >> 4]; + newchars[ni++] = digits[ch & 0xF]; + } + } + JS_ASSERT(ni == newlength); + newchars[newlength] = 0; + + str = js_NewString(cx, newchars, newlength, 0); + if (!str) { + JS_free(cx, newchars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#undef IS_OK + +/* See ECMA-262 15.1.2.5 */ +static JSBool +str_unescape(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + size_t i, ni, length; + const jschar *chars; + jschar *newchars; + jschar ch; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + + chars = JSSTRING_CHARS(str); + length = JSSTRING_LENGTH(str); + + /* Don't bother allocating less space for the new string. */ + newchars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!newchars) + return JS_FALSE; + ni = i = 0; + while (i < length) { + ch = chars[i++]; + if (ch == '%') { + if (i + 1 < length && + JS7_ISHEX(chars[i]) && JS7_ISHEX(chars[i + 1])) + { + ch = JS7_UNHEX(chars[i]) * 16 + JS7_UNHEX(chars[i + 1]); + i += 2; + } else if (i + 4 < length && chars[i] == 'u' && + JS7_ISHEX(chars[i + 1]) && JS7_ISHEX(chars[i + 2]) && + JS7_ISHEX(chars[i + 3]) && JS7_ISHEX(chars[i + 4])) + { + ch = (((((JS7_UNHEX(chars[i + 1]) << 4) + + JS7_UNHEX(chars[i + 2])) << 4) + + JS7_UNHEX(chars[i + 3])) << 4) + + JS7_UNHEX(chars[i + 4]); + i += 5; + } + } + newchars[ni++] = ch; + } + newchars[ni] = 0; + + str = js_NewString(cx, newchars, ni, 0); + if (!str) { + JS_free(cx, newchars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +#if JS_HAS_UNEVAL +static JSBool +str_uneval(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + str = js_ValueToSource(cx, argv[0]); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif + +const char js_escape_str[] = "escape"; +const char js_unescape_str[] = "unescape"; +#if JS_HAS_UNEVAL +const char js_uneval_str[] = "uneval"; +#endif +const char js_decodeURI_str[] = "decodeURI"; +const char js_encodeURI_str[] = "encodeURI"; +const char js_decodeURIComponent_str[] = "decodeURIComponent"; +const char js_encodeURIComponent_str[] = "encodeURIComponent"; + +static JSFunctionSpec string_functions[] = { + {js_escape_str, js_str_escape, 1,0,0}, + {js_unescape_str, str_unescape, 1,0,0}, +#if JS_HAS_UNEVAL + {js_uneval_str, str_uneval, 1,0,0}, +#endif + {js_decodeURI_str, str_decodeURI, 1,0,0}, + {js_encodeURI_str, str_encodeURI, 1,0,0}, + {js_decodeURIComponent_str, str_decodeURI_Component, 1,0,0}, + {js_encodeURIComponent_str, str_encodeURI_Component, 1,0,0}, + + {0,0,0,0,0} +}; + +jschar js_empty_ucstr[] = {0}; +JSSubString js_EmptySubString = {0, js_empty_ucstr}; + +enum string_tinyid { + STRING_LENGTH = -1 +}; + +static JSPropertySpec string_props[] = { + {js_length_str, STRING_LENGTH, + JSPROP_READONLY|JSPROP_PERMANENT|JSPROP_SHARED, 0,0}, + {0,0,0,0,0} +}; + +static JSBool +str_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp) +{ + JSString *str; + jsint slot; + + if (!JSVAL_IS_INT(id)) + return JS_TRUE; + + /* + * Call js_ValueToString because getters and setters can be invoked on + * objects of different class, unlike enumerate, resolve, and the other + * class hooks. + */ + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + + slot = JSVAL_TO_INT(id); + if (slot == STRING_LENGTH) + *vp = INT_TO_JSVAL((jsint) JSSTRING_LENGTH(str)); + return JS_TRUE; +} + +#define STRING_ELEMENT_ATTRS (JSPROP_ENUMERATE|JSPROP_READONLY|JSPROP_PERMANENT) + +static JSBool +str_enumerate(JSContext *cx, JSObject *obj) +{ + JSString *str, *str1; + size_t i, length; + + /* Avoid infinite recursion via js_obj_toSource (see bug 271477). */ + if (JS_VERSION_IS_1_2(cx)) + return JS_TRUE; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_TRUE; + cx->newborn[GCX_STRING] = (JSGCThing *) str; + + length = JSSTRING_LENGTH(str); + for (i = 0; i < length; i++) { + str1 = js_NewDependentString(cx, str, i, 1, 0); + if (!str1) + return JS_FALSE; + if (!OBJ_DEFINE_PROPERTY(cx, obj, INT_TO_JSID(i), + STRING_TO_JSVAL(str1), NULL, NULL, + STRING_ELEMENT_ATTRS, NULL)) { + return JS_FALSE; + } + } + return JS_TRUE; +} + +static JSBool +str_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags, + JSObject **objp) +{ + JSString *str, *str1; + jsint slot; + + if (!JSVAL_IS_INT(id) || (flags & JSRESOLVE_ASSIGNING)) + return JS_TRUE; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_TRUE; + cx->newborn[GCX_STRING] = (JSGCThing *) str; + + slot = JSVAL_TO_INT(id); + if ((size_t)slot < JSSTRING_LENGTH(str)) { + str1 = js_NewDependentString(cx, str, (size_t)slot, 1, 0); + if (!str1) + return JS_FALSE; + if (!OBJ_DEFINE_PROPERTY(cx, obj, INT_TO_JSID(slot), + STRING_TO_JSVAL(str1), NULL, NULL, + STRING_ELEMENT_ATTRS, NULL)) { + return JS_FALSE; + } + *objp = obj; + } + return JS_TRUE; +} + +JSClass js_StringClass = { + js_String_str, + JSCLASS_HAS_PRIVATE | JSCLASS_NEW_RESOLVE, + JS_PropertyStub, JS_PropertyStub, str_getProperty, JS_PropertyStub, + str_enumerate, (JSResolveOp)str_resolve, JS_ConvertStub, JS_FinalizeStub, + JSCLASS_NO_OPTIONAL_MEMBERS +}; + +#if JS_HAS_TOSOURCE + +/* + * String.prototype.quote is generic (as are most string methods), unlike + * toSource, toString, and valueOf. + */ +static JSBool +str_quote(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + str = js_QuoteString(cx, str, '"'); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + jsval v; + JSString *str; + size_t i, j, k, n; + char buf[16]; + jschar *s, *t; + + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + v = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + if (!JSVAL_IS_STRING(v)) + return js_obj_toSource(cx, obj, argc, argv, rval); + str = js_QuoteString(cx, JSVAL_TO_STRING(v), '"'); + if (!str) + return JS_FALSE; + j = JS_snprintf(buf, sizeof buf, "(new %s(", js_StringClass.name); + s = JSSTRING_CHARS(str); + k = JSSTRING_LENGTH(str); + n = j + k + 2; + t = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!t) + return JS_FALSE; + for (i = 0; i < j; i++) + t[i] = buf[i]; + for (j = 0; j < k; i++, j++) + t[i] = s[j]; + t[i++] = ')'; + t[i++] = ')'; + t[i] = 0; + str = js_NewString(cx, t, n, 0); + if (!str) { + JS_free(cx, t); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +#endif /* JS_HAS_TOSOURCE */ + +static JSBool +str_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + jsval v; + + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + v = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + if (!JSVAL_IS_STRING(v)) + return js_obj_toString(cx, obj, argc, argv, rval); + *rval = v; + return JS_TRUE; +} + +static JSBool +str_valueOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + if (!JS_InstanceOf(cx, obj, &js_StringClass, argv)) + return JS_FALSE; + *rval = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE); + return JS_TRUE; +} + +/* + * Java-like string native methods. + */ +static JSBool +str_substring(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) + begin = 0; + else if (begin > length) + begin = length; + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) + end = 0; + else if (end > length) + end = length; + if (end < begin) { + if (!JS_VERSION_IS_1_2(cx)) { + /* XXX emulate old JDK1.0 java.lang.String.substring. */ + jsdouble tmp = begin; + begin = end; + end = tmp; + } else { + end = begin; + } + } + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLowerCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + size_t i, n; + jschar *s, *news; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + n = JSSTRING_LENGTH(str); + news = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return JS_FALSE; + s = JSSTRING_CHARS(str); + for (i = 0; i < n; i++) + news[i] = JS_TOLOWER(s[i]); + news[n] = 0; + str = js_NewString(cx, news, n, 0); + if (!str) { + JS_free(cx, news); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLocaleLowerCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + /* + * Forcefully ignore the first (or any) argument and return toLowerCase(), + * ECMA has reserved that argument, presumably for defining the locale. + */ + if (cx->localeCallbacks && cx->localeCallbacks->localeToLowerCase) { + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + return cx->localeCallbacks->localeToLowerCase(cx, str, rval); + } + return str_toLowerCase(cx, obj, 0, argv, rval); +} + +static JSBool +str_toUpperCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + size_t i, n; + jschar *s, *news; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + n = JSSTRING_LENGTH(str); + news = (jschar *) JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return JS_FALSE; + s = JSSTRING_CHARS(str); + for (i = 0; i < n; i++) + news[i] = JS_TOUPPER(s[i]); + news[n] = 0; + str = js_NewString(cx, news, n, 0); + if (!str) { + JS_free(cx, news); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_toLocaleUpperCase(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + /* + * Forcefully ignore the first (or any) argument and return toUpperCase(), + * ECMA has reserved that argument, presumbaly for defining the locale. + */ + if (cx->localeCallbacks && cx->localeCallbacks->localeToUpperCase) { + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + return cx->localeCallbacks->localeToUpperCase(cx, str, rval); + } + return str_toUpperCase(cx, obj, 0, argv, rval); +} + +static JSBool +str_localeCompare(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str, *thatStr; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + *rval = JSVAL_ZERO; + } else { + thatStr = js_ValueToString(cx, argv[0]); + if (!thatStr) + return JS_FALSE; + if (cx->localeCallbacks && cx->localeCallbacks->localeCompare) { + argv[0] = STRING_TO_JSVAL(thatStr); + return cx->localeCallbacks->localeCompare(cx, str, thatStr, rval); + } + *rval = INT_TO_JSVAL(js_CompareStrings(str, thatStr)); + } + return JS_TRUE; +} + +static JSBool +str_charAt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + size_t index; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + d = 0.0; + } else { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + } + + if (d < 0 || JSSTRING_LENGTH(str) <= d) { + *rval = JS_GetEmptyStringValue(cx); + } else { + index = (size_t)d; + str = js_NewDependentString(cx, str, index, 1, 0); + if (!str) + return JS_FALSE; + *rval = STRING_TO_JSVAL(str); + } + return JS_TRUE; +} + +static JSBool +str_charCodeAt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + jsdouble d; + size_t index; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc == 0) { + d = 0.0; + } else { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + } + + if (d < 0 || JSSTRING_LENGTH(str) <= d) { + *rval = JS_GetNaNValue(cx); + } else { + index = (size_t)d; + *rval = INT_TO_JSVAL((jsint) JSSTRING_CHARS(str)[index]); + } + return JS_TRUE; +} + +jsint +js_BoyerMooreHorspool(const jschar *text, jsint textlen, + const jschar *pat, jsint patlen, + jsint start) +{ + jsint i, j, k, m; + uint8 skip[BMH_CHARSET_SIZE]; + jschar c; + + JS_ASSERT(0 < patlen && patlen <= BMH_PATLEN_MAX); + for (i = 0; i < BMH_CHARSET_SIZE; i++) + skip[i] = (uint8)patlen; + m = patlen - 1; + for (i = 0; i < m; i++) { + c = pat[i]; + if (c >= BMH_CHARSET_SIZE) + return BMH_BAD_PATTERN; + skip[c] = (uint8)(m - i); + } + for (k = start + m; + k < textlen; + k += ((c = text[k]) >= BMH_CHARSET_SIZE) ? patlen : skip[c]) { + for (i = k, j = m; ; i--, j--) { + if (j < 0) + return i + 1; + if (text[i] != pat[j]) + break; + } + } + return -1; +} + +static JSBool +str_indexOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *str2; + jsint i, j, index, textlen, patlen; + const jschar *text, *pat; + jsdouble d; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + text = JSSTRING_CHARS(str); + textlen = (jsint) JSSTRING_LENGTH(str); + + str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + pat = JSSTRING_CHARS(str2); + patlen = (jsint) JSSTRING_LENGTH(str2); + + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + d = js_DoubleToInteger(d); + if (d < 0) + i = 0; + else if (d > textlen) + i = textlen; + else + i = (jsint)d; + } else { + i = 0; + } + if (patlen == 0) { + *rval = INT_TO_JSVAL(i); + return JS_TRUE; + } + + /* XXX tune the BMH threshold (512) */ + if ((jsuint)(patlen - 2) <= BMH_PATLEN_MAX - 2 && textlen >= 512) { + index = js_BoyerMooreHorspool(text, textlen, pat, patlen, i); + if (index != BMH_BAD_PATTERN) + goto out; + } + + index = -1; + j = 0; + while (i + j < textlen) { + if (text[i + j] == pat[j]) { + if (++j == patlen) { + index = i; + break; + } + } else { + i++; + j = 0; + } + } + +out: + *rval = INT_TO_JSVAL(index); + return JS_TRUE; +} + +static JSBool +str_lastIndexOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str, *str2; + const jschar *text, *pat; + jsint i, j, textlen, patlen; + jsdouble d; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + text = JSSTRING_CHARS(str); + textlen = (jsint) JSSTRING_LENGTH(str); + + str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + pat = JSSTRING_CHARS(str2); + patlen = (jsint) JSSTRING_LENGTH(str2); + + if (argc > 1) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + if (JSDOUBLE_IS_NaN(d)) { + i = textlen; + } else { + d = js_DoubleToInteger(d); + if (d < 0) + i = 0; + else if (d > textlen) + i = textlen; + else + i = (jsint)d; + } + } else { + i = textlen; + } + + if (patlen == 0) { + *rval = INT_TO_JSVAL(i); + return JS_TRUE; + } + + j = 0; + while (i >= 0) { + /* Don't assume that text is NUL-terminated: it could be dependent. */ + if (i + j < textlen && text[i + j] == pat[j]) { + if (++j == patlen) + break; + } else { + i--; + j = 0; + } + } + *rval = INT_TO_JSVAL(i); + return JS_TRUE; +} + +/* + * Perl-inspired string functions. + */ +#if JS_HAS_REGEXPS +typedef struct GlobData { + uintN flags; /* inout: mode and flag bits, see below */ + uintN optarg; /* in: index of optional flags argument */ + JSString *str; /* out: 'this' parameter object as string */ + JSRegExp *regexp; /* out: regexp parameter object private data */ +} GlobData; + +/* + * Mode and flag bit definitions for match_or_replace's GlobData.flags field. + */ +#define MODE_MATCH 0x00 /* in: return match array on success */ +#define MODE_REPLACE 0x01 /* in: match and replace */ +#define MODE_SEARCH 0x02 /* in: search only, return match index or -1 */ +#define GET_MODE(f) ((f) & 0x03) +#define FORCE_FLAT 0x04 /* in: force flat (non-regexp) string match */ +#define KEEP_REGEXP 0x08 /* inout: keep GlobData.regexp alive for caller + of match_or_replace; if set on input + but clear on output, regexp ownership + does not pass to caller */ +#define GLOBAL_REGEXP 0x10 /* out: regexp had the 'g' flag */ + +static JSBool +match_or_replace(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + JSBool (*glob)(JSContext *cx, jsint count, GlobData *data), + GlobData *data, jsval *rval) +{ + JSString *str, *src, *opt; + JSObject *reobj; + JSRegExp *re; + size_t index, length; + JSBool ok, test; + jsint count; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + data->str = str; + + if (JSVAL_IS_REGEXP(cx, argv[0])) { + reobj = JSVAL_TO_OBJECT(argv[0]); + re = (JSRegExp *) JS_GetPrivate(cx, reobj); + } else { + src = js_ValueToString(cx, argv[0]); + if (!src) + return JS_FALSE; + if (data->optarg < argc) { + argv[0] = STRING_TO_JSVAL(src); + opt = js_ValueToString(cx, argv[data->optarg]); + if (!opt) + return JS_FALSE; + } else { + opt = NULL; + } + re = js_NewRegExpOpt(cx, NULL, src, opt, + (data->flags & FORCE_FLAT) != 0); + if (!re) + return JS_FALSE; + reobj = NULL; + } + /* From here on, all control flow must reach the matching DROP. */ + data->regexp = re; + HOLD_REGEXP(cx, re); + + if (re->flags & JSREG_GLOB) + data->flags |= GLOBAL_REGEXP; + index = 0; + if (GET_MODE(data->flags) == MODE_SEARCH) { + ok = js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, rval); + if (ok) { + *rval = (*rval == JSVAL_TRUE) + ? INT_TO_JSVAL(cx->regExpStatics.leftContext.length) + : INT_TO_JSVAL(-1); + } + } else if (data->flags & GLOBAL_REGEXP) { + if (reobj) { + /* Set the lastIndex property's reserved slot to 0. */ + ok = js_SetLastIndex(cx, reobj, 0); + } else { + ok = JS_TRUE; + } + if (ok) { + length = JSSTRING_LENGTH(str); + for (count = 0; index <= length; count++) { + ok = js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, rval); + if (!ok || *rval != JSVAL_TRUE) + break; + ok = glob(cx, count, data); + if (!ok) + break; + if (cx->regExpStatics.lastMatch.length == 0) { + if (index == length) + break; + index++; + } + } + } + } else { + if (GET_MODE(data->flags) == MODE_REPLACE) { + test = JS_TRUE; + } else { + /* + * MODE_MATCH implies str_match is being called from a script or a + * scripted function. If the caller cares only about testing null + * vs. non-null return value, optimize away the array object that + * would normally be returned in *rval. + */ + JSStackFrame *fp = cx->fp->down; + + /* Skip Function.prototype.call and .apply frames. */ + while (fp && !fp->pc) { + JS_ASSERT(!fp->script); + fp = fp->down; + } + + /* Assume a full array result is required, then prove otherwise. */ + test = JS_FALSE; + if (fp) { + JS_ASSERT(*fp->pc == JSOP_CALL || *fp->pc == JSOP_NEW); + JS_ASSERT(js_CodeSpec[*fp->pc].length == 3); + switch (fp->pc[3]) { + case JSOP_POP: + case JSOP_IFEQ: + case JSOP_IFNE: + case JSOP_IFEQX: + case JSOP_IFNEX: + test = JS_TRUE; + break; + default:; + } + } + } + ok = js_ExecuteRegExp(cx, re, str, &index, test, rval); + } + + DROP_REGEXP(cx, re); + if (reobj) { + /* Tell our caller that it doesn't need to destroy data->regexp. */ + data->flags &= ~KEEP_REGEXP; + } else if (!(data->flags & KEEP_REGEXP)) { + /* Caller didn't want to keep data->regexp, so null and destroy it. */ + data->regexp = NULL; + js_DestroyRegExp(cx, re); + } + + return ok; +} + +typedef struct MatchData { + GlobData base; + jsval *arrayval; /* NB: local root pointer */ +} MatchData; + +static JSBool +match_glob(JSContext *cx, jsint count, GlobData *data) +{ + MatchData *mdata; + JSObject *arrayobj; + JSSubString *matchsub; + JSString *matchstr; + jsval v; + + mdata = (MatchData *)data; + arrayobj = JSVAL_TO_OBJECT(*mdata->arrayval); + if (!arrayobj) { + arrayobj = js_ConstructObject(cx, &js_ArrayClass, NULL, NULL, 0, NULL); + if (!arrayobj) + return JS_FALSE; + *mdata->arrayval = OBJECT_TO_JSVAL(arrayobj); + } + matchsub = &cx->regExpStatics.lastMatch; + matchstr = js_NewStringCopyN(cx, matchsub->chars, matchsub->length, 0); + if (!matchstr) + return JS_FALSE; + v = STRING_TO_JSVAL(matchstr); + return js_SetProperty(cx, arrayobj, INT_TO_JSID(count), &v); +} + +static JSBool +str_match(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + MatchData mdata; + JSBool ok; + + mdata.base.flags = MODE_MATCH; + mdata.base.optarg = 1; + mdata.arrayval = &argv[2]; + *mdata.arrayval = JSVAL_NULL; + ok = match_or_replace(cx, obj, argc, argv, match_glob, &mdata.base, rval); + if (ok && !JSVAL_IS_NULL(*mdata.arrayval)) + *rval = *mdata.arrayval; + return ok; +} + +static JSBool +str_search(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + GlobData data; + + data.flags = MODE_SEARCH; + data.optarg = 1; + return match_or_replace(cx, obj, argc, argv, NULL, &data, rval); +} + +typedef struct ReplaceData { + GlobData base; /* base struct state */ + JSObject *lambda; /* replacement function object or null */ + JSString *repstr; /* replacement string */ + jschar *dollar; /* null or pointer to first $ in repstr */ + jschar *dollarEnd; /* limit pointer for js_strchr_limit */ + jschar *chars; /* result chars, null initially */ + size_t length; /* result length, 0 initially */ + jsint index; /* index in result of next replacement */ + jsint leftIndex; /* left context index in base.str->chars */ + JSSubString dollarStr; /* for "$$" interpret_dollar result */ +} ReplaceData; + +static JSSubString * +interpret_dollar(JSContext *cx, jschar *dp, jschar *ep, ReplaceData *rdata, + size_t *skip) +{ + JSVersion version; + JSRegExpStatics *res; + jschar dc, *cp; + uintN num, tmp; + JSString *str; + + JS_ASSERT(*dp == '$'); + + /* + * Allow a real backslash (literal "\\" before "$1") to escape "$1", e.g. + * Do this only for versions strictly less than ECMAv3. + */ + version = cx->version & JSVERSION_MASK; + if (version != JSVERSION_DEFAULT && version <= JSVERSION_1_4) { + if (dp > JSSTRING_CHARS(rdata->repstr) && dp[-1] == '\\') + return NULL; + } + + /* If there is only a dollar, bail now */ + if (dp + 1 >= ep) + return NULL; + + /* Interpret all Perl match-induced dollar variables. */ + res = &cx->regExpStatics; + dc = dp[1]; + if (JS7_ISDEC(dc)) { + if (version != JSVERSION_DEFAULT && version <= JSVERSION_1_4) { + if (dc == '0') + return NULL; + + /* Check for overflow to avoid gobbling arbitrary decimal digits. */ + num = 0; + cp = dp; + while (++cp < ep && (dc = *cp, JS7_ISDEC(dc))) { + tmp = 10 * num + JS7_UNDEC(dc); + if (tmp < num) + break; + num = tmp; + } + } else { /* ECMA 3, 1-9 or 01-99 */ + num = JS7_UNDEC(dc); + if (num > res->parenCount) + return NULL; + + cp = dp + 2; + if (cp < ep && (dc = *cp, JS7_ISDEC(dc))) { + tmp = 10 * num + JS7_UNDEC(dc); + if (tmp <= res->parenCount) { + cp++; + num = tmp; + } + } + if (num == 0) + return NULL; + } + /* Adjust num from 1 $n-origin to 0 array-index-origin. */ + num--; + *skip = cp - dp; + return REGEXP_PAREN_SUBSTRING(res, num); + } + + *skip = 2; + switch (dc) { + case '$': + rdata->dollarStr.chars = dp; + rdata->dollarStr.length = 1; + return &rdata->dollarStr; + case '&': + return &res->lastMatch; + case '+': + return &res->lastParen; + case '`': + if (version == JSVERSION_1_2) { + /* + * JS1.2 imitated the Perl4 bug where left context at each step + * in an iterative use of a global regexp started from last match, + * not from the start of the target string. But Perl4 does start + * $` at the beginning of the target string when it is used in a + * substitution, so we emulate that special case here. + */ + str = rdata->base.str; + res->leftContext.chars = JSSTRING_CHARS(str); + res->leftContext.length = res->lastMatch.chars + - JSSTRING_CHARS(str); + } + return &res->leftContext; + case '\'': + return &res->rightContext; + } + return NULL; +} + +static JSBool +find_replen(JSContext *cx, ReplaceData *rdata, size_t *sizep) +{ + JSString *repstr; + size_t replen, skip; + jschar *dp, *ep; + JSSubString *sub; +#if JS_HAS_REPLACE_LAMBDA + JSObject *lambda; + + lambda = rdata->lambda; + if (lambda) { + uintN argc, i, j, m, n, p; + jsval *sp, *oldsp, rval; + void *mark; + JSStackFrame *fp; + JSBool ok; + + /* + * Save the regExpStatics from the current regexp, since they may be + * clobbered by a RegExp usage in the lambda function. Note that all + * members of JSRegExpStatics are JSSubStrings, so not GC roots, save + * input, which is rooted otherwise via argv[-1] in str_replace. + */ + JSRegExpStatics save = cx->regExpStatics; + JSBool freeMoreParens = JS_FALSE; + + /* + * In the lambda case, not only do we find the replacement string's + * length, we compute repstr and return it via rdata for use within + * do_replace. The lambda is called with arguments ($&, $1, $2, ..., + * index, input), i.e., all the properties of a regexp match array. + * For $&, etc., we must create string jsvals from cx->regExpStatics. + * We grab up stack space to keep the newborn strings GC-rooted. + */ + p = rdata->base.regexp->parenCount; + argc = 1 + p + 2; + sp = js_AllocStack(cx, 2 + argc, &mark); + if (!sp) + return JS_FALSE; + + /* Push lambda and its 'this' parameter. */ + *sp++ = OBJECT_TO_JSVAL(lambda); + *sp++ = OBJECT_TO_JSVAL(OBJ_GET_PARENT(cx, lambda)); + +#define PUSH_REGEXP_STATIC(sub) \ + JS_BEGIN_MACRO \ + JSString *str = js_NewStringCopyN(cx, \ + cx->regExpStatics.sub.chars, \ + cx->regExpStatics.sub.length, \ + 0); \ + if (!str) { \ + ok = JS_FALSE; \ + goto lambda_out; \ + } \ + *sp++ = STRING_TO_JSVAL(str); \ + JS_END_MACRO + + /* Push $&, $1, $2, ... */ + PUSH_REGEXP_STATIC(lastMatch); + i = 0; + m = cx->regExpStatics.parenCount; + n = JS_MIN(m, 9); + for (j = 0; i < n; i++, j++) + PUSH_REGEXP_STATIC(parens[j]); + for (j = 0; i < m; i++, j++) + PUSH_REGEXP_STATIC(moreParens[j]); + + /* + * We need to clear moreParens in the top-of-stack cx->regExpStatics + * to it won't be possibly realloc'ed, leaving the bottom-of-stack + * moreParens pointing to freed memory. + */ + cx->regExpStatics.moreParens = NULL; + freeMoreParens = JS_TRUE; + +#undef PUSH_REGEXP_STATIC + + /* Make sure to push undefined for any unmatched parens. */ + for (; i < p; i++) + *sp++ = JSVAL_VOID; + + /* Push match index and input string. */ + *sp++ = INT_TO_JSVAL((jsint)cx->regExpStatics.leftContext.length); + *sp++ = STRING_TO_JSVAL(rdata->base.str); + + /* Lift current frame to include the args and do the call. */ + fp = cx->fp; + oldsp = fp->sp; + fp->sp = sp; + ok = js_Invoke(cx, argc, JSINVOKE_INTERNAL); + rval = fp->sp[-1]; + fp->sp = oldsp; + + if (ok) { + /* + * NB: we count on the newborn string root to hold any string + * created by this js_ValueToString that would otherwise be GC- + * able, until we use rdata->repstr in do_replace. + */ + repstr = js_ValueToString(cx, rval); + if (!repstr) { + ok = JS_FALSE; + } else { + rdata->repstr = repstr; + *sizep = JSSTRING_LENGTH(repstr); + } + } + + lambda_out: + js_FreeStack(cx, mark); + if (freeMoreParens) + JS_free(cx, cx->regExpStatics.moreParens); + cx->regExpStatics = save; + return ok; + } +#endif /* JS_HAS_REPLACE_LAMBDA */ + + repstr = rdata->repstr; + replen = JSSTRING_LENGTH(repstr); + for (dp = rdata->dollar, ep = rdata->dollarEnd; dp; + dp = js_strchr_limit(dp, '$', ep)) { + sub = interpret_dollar(cx, dp, ep, rdata, &skip); + if (sub) { + replen += sub->length - skip; + dp += skip; + } + else + dp++; + } + *sizep = replen; + return JS_TRUE; +} + +static void +do_replace(JSContext *cx, ReplaceData *rdata, jschar *chars) +{ + JSString *repstr; + jschar *bp, *cp, *dp, *ep; + size_t len, skip; + JSSubString *sub; + + repstr = rdata->repstr; + bp = cp = JSSTRING_CHARS(repstr); + for (dp = rdata->dollar, ep = rdata->dollarEnd; dp; + dp = js_strchr_limit(dp, '$', ep)) { + len = dp - cp; + js_strncpy(chars, cp, len); + chars += len; + cp = dp; + sub = interpret_dollar(cx, dp, ep, rdata, &skip); + if (sub) { + len = sub->length; + js_strncpy(chars, sub->chars, len); + chars += len; + cp += skip; + dp += skip; + } else { + dp++; + } + } + js_strncpy(chars, cp, JSSTRING_LENGTH(repstr) - (cp - bp)); +} + +static JSBool +replace_glob(JSContext *cx, jsint count, GlobData *data) +{ + ReplaceData *rdata; + JSString *str; + size_t leftoff, leftlen, replen, growth; + const jschar *left; + jschar *chars; + + rdata = (ReplaceData *)data; + str = data->str; + leftoff = rdata->leftIndex; + left = JSSTRING_CHARS(str) + leftoff; + leftlen = cx->regExpStatics.lastMatch.chars - left; + rdata->leftIndex = cx->regExpStatics.lastMatch.chars - JSSTRING_CHARS(str); + rdata->leftIndex += cx->regExpStatics.lastMatch.length; + if (!find_replen(cx, rdata, &replen)) + return JS_FALSE; + growth = leftlen + replen; + chars = (jschar *) + (rdata->chars + ? JS_realloc(cx, rdata->chars, (rdata->length + growth + 1) + * sizeof(jschar)) + : JS_malloc(cx, (growth + 1) * sizeof(jschar))); + if (!chars) { + JS_free(cx, rdata->chars); + rdata->chars = NULL; + return JS_FALSE; + } + rdata->chars = chars; + rdata->length += growth; + chars += rdata->index; + rdata->index += growth; + js_strncpy(chars, left, leftlen); + chars += leftlen; + do_replace(cx, rdata, chars); + return JS_TRUE; +} + +static JSBool +str_replace(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSObject *lambda; + JSString *repstr, *str; + ReplaceData rdata; + JSVersion version; + JSBool ok; + jschar *chars; + size_t leftlen, rightlen, length; + +#if JS_HAS_REPLACE_LAMBDA + if (JS_TypeOfValue(cx, argv[1]) == JSTYPE_FUNCTION) { + lambda = JSVAL_TO_OBJECT(argv[1]); + repstr = NULL; + } else +#endif + { + if (!JS_ConvertValue(cx, argv[1], JSTYPE_STRING, &argv[1])) + return JS_FALSE; + repstr = JSVAL_TO_STRING(argv[1]); + lambda = NULL; + } + + /* + * For ECMA Edition 3, the first argument is to be converted to a string + * to match in a "flat" sense (without regular expression metachars having + * special meanings) UNLESS the first arg is a RegExp object. + */ + rdata.base.flags = MODE_REPLACE | KEEP_REGEXP; + version = cx->version & JSVERSION_MASK; + if (version == JSVERSION_DEFAULT || version > JSVERSION_1_4) + rdata.base.flags |= FORCE_FLAT; + rdata.base.optarg = 2; + + rdata.lambda = lambda; + rdata.repstr = repstr; + if (repstr) { + rdata.dollarEnd = JSSTRING_CHARS(repstr) + JSSTRING_LENGTH(repstr); + rdata.dollar = js_strchr_limit(JSSTRING_CHARS(repstr), '$', + rdata.dollarEnd); + } else { + rdata.dollar = rdata.dollarEnd = NULL; + } + rdata.chars = NULL; + rdata.length = 0; + rdata.index = 0; + rdata.leftIndex = 0; + + ok = match_or_replace(cx, obj, argc, argv, replace_glob, &rdata.base, rval); + if (!ok) + return JS_FALSE; + + if (!rdata.chars) { + if ((rdata.base.flags & GLOBAL_REGEXP) || *rval != JSVAL_TRUE) { + /* Didn't match even once. */ + *rval = STRING_TO_JSVAL(rdata.base.str); + goto out; + } + leftlen = cx->regExpStatics.leftContext.length; + ok = find_replen(cx, &rdata, &length); + if (!ok) + goto out; + length += leftlen; + chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!chars) { + ok = JS_FALSE; + goto out; + } + js_strncpy(chars, cx->regExpStatics.leftContext.chars, leftlen); + do_replace(cx, &rdata, chars + leftlen); + rdata.chars = chars; + rdata.length = length; + } + + rightlen = cx->regExpStatics.rightContext.length; + length = rdata.length + rightlen; + chars = (jschar *) + JS_realloc(cx, rdata.chars, (length + 1) * sizeof(jschar)); + if (!chars) { + JS_free(cx, rdata.chars); + ok = JS_FALSE; + goto out; + } + js_strncpy(chars + rdata.length, cx->regExpStatics.rightContext.chars, + rightlen); + chars[length] = 0; + + str = js_NewString(cx, chars, length, 0); + if (!str) { + JS_free(cx, chars); + ok = JS_FALSE; + goto out; + } + *rval = STRING_TO_JSVAL(str); + +out: + /* If KEEP_REGEXP is still set, it's our job to destroy regexp now. */ + if (rdata.base.flags & KEEP_REGEXP) + js_DestroyRegExp(cx, rdata.base.regexp); + return ok; +} +#endif /* JS_HAS_REGEXPS */ + +/* + * Subroutine used by str_split to find the next split point in str, starting + * at offset *ip and looking either for the separator substring given by sep, + * or for the next re match. In the re case, return the matched separator in + * *sep, and the possibly updated offset in *ip. + * + * Return -2 on error, -1 on end of string, >= 0 for a valid index of the next + * separator occurrence if found, or str->length if no separator is found. + */ +static jsint +find_split(JSContext *cx, JSString *str, JSRegExp *re, jsint *ip, + JSSubString *sep) +{ + jsint i, j, k; + jschar *chars; + size_t length; + + /* + * Stop if past end of string. If at end of string, we will compare the + * null char stored there (by js_NewString*) to sep->chars[j] in the while + * loop at the end of this function, so that + * + * "ab,".split(',') => ["ab", ""] + * + * and the resulting array converts back to the string "ab," for symmetry. + * However, we ape Perl and do this only if there is a sufficiently large + * limit argument (see str_split). + */ + i = *ip; + if ((size_t)i > JSSTRING_LENGTH(str)) + return -1; + + /* + * Perl4 special case for str.split(' '), only if the user has selected + * JavaScript1.2 explicitly. Split on whitespace, and skip leading w/s. + * Strange but true, apparently modeled after awk. + * + * NB: we set sep->length to the length of the w/s run, so we must test + * sep->chars[1] == 0 to make sure sep is just one space. + */ + chars = JSSTRING_CHARS(str); + length = JSSTRING_LENGTH(str); + if (JS_VERSION_IS_1_2(cx) && + !re && *sep->chars == ' ' && sep->chars[1] == 0) { + + /* Skip leading whitespace if at front of str. */ + if (i == 0) { + while (JS_ISSPACE(chars[i])) + i++; + *ip = i; + } + + /* Don't delimit whitespace at end of string. */ + if ((size_t)i == length) + return -1; + + /* Skip over the non-whitespace chars. */ + while ((size_t)i < length && !JS_ISSPACE(chars[i])) + i++; + + /* Now skip the next run of whitespace. */ + j = i; + while ((size_t)j < length && JS_ISSPACE(chars[j])) + j++; + + /* Update sep->length to count delimiter chars. */ + sep->length = (size_t)(j - i); + return i; + } + +#if JS_HAS_REGEXPS + /* + * Match a regular expression against the separator at or above index i. + * Call js_ExecuteRegExp with true for the test argument. On successful + * match, get the separator from cx->regExpStatics.lastMatch. + */ + if (re) { + size_t index; + jsval rval; + + again: + /* JS1.2 deviated from Perl by never matching at end of string. */ + index = (size_t)i; + if (!js_ExecuteRegExp(cx, re, str, &index, JS_TRUE, &rval)) + return -2; + if (rval != JSVAL_TRUE) { + /* Mismatch: ensure our caller advances i past end of string. */ + sep->length = 1; + return length; + } + i = (jsint)index; + *sep = cx->regExpStatics.lastMatch; + if (sep->length == 0) { + /* + * Empty string match: never split on an empty match at the start + * of a find_split cycle. Same rule as for an empty global match + * in match_or_replace. + */ + if (i == *ip) { + /* + * "Bump-along" to avoid sticking at an empty match, but don't + * bump past end of string -- our caller must do that by adding + * sep->length to our return value. + */ + if ((size_t)i == length) { + if (JS_VERSION_IS_1_2(cx)) { + sep->length = 1; + return i; + } + return -1; + } + i++; + goto again; + } + if ((size_t)i == length) { + /* + * If there was a trivial zero-length match at the end of the + * split, then we shouldn't output the matched string at the end + * of the split array. See ECMA-262 Ed. 3, 15.5.4.14, Step 15. + */ + sep->chars = NULL; + } + } + JS_ASSERT((size_t)i >= sep->length); + return i - sep->length; + } +#endif /* JS_HAS_REGEXPS */ + + /* + * Deviate from ECMA by never splitting an empty string by any separator + * string into a non-empty array (an array of length 1 that contains the + * empty string). + */ + if (!JS_VERSION_IS_ECMA(cx) && length == 0) + return -1; + + /* + * Special case: if sep is the empty string, split str into one character + * substrings. Let our caller worry about whether to split once at end of + * string into an empty substring. + * + * For 1.2 compatibility, at the end of the string, we return the length as + * the result, and set the separator length to 1 -- this allows the caller + * to include an additional null string at the end of the substring list. + */ + if (sep->length == 0) { + if (JS_VERSION_IS_1_2(cx)) { + if ((size_t)i == length) { + sep->length = 1; + return i; + } + return i + 1; + } + return ((size_t)i == length) ? -1 : i + 1; + } + + /* + * Now that we know sep is non-empty, search starting at i in str for an + * occurrence of all of sep's chars. If we find them, return the index of + * the first separator char. Otherwise, return length. + */ + j = 0; + while ((size_t)(k = i + j) < length) { + if (chars[k] == sep->chars[j]) { + if ((size_t)++j == sep->length) + return i; + } else { + i++; + j = 0; + } + } + return k; +} + +static JSBool +str_split(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *sub; + JSObject *arrayobj; + jsval v; + JSBool ok, limited; + JSRegExp *re; + JSSubString *sep, tmp; + jsdouble d; + jsint i, j; + uint32 len, limit; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + arrayobj = js_ConstructObject(cx, &js_ArrayClass, NULL, NULL, 0, NULL); + if (!arrayobj) + return JS_FALSE; + *rval = OBJECT_TO_JSVAL(arrayobj); + + if (argc == 0) { + v = STRING_TO_JSVAL(str); + ok = JS_SetElement(cx, arrayobj, 0, &v); + } else { +#if JS_HAS_REGEXPS + if (JSVAL_IS_REGEXP(cx, argv[0])) { + re = (JSRegExp *) JS_GetPrivate(cx, JSVAL_TO_OBJECT(argv[0])); + sep = &tmp; + + /* Set a magic value so we can detect a successful re match. */ + sep->chars = NULL; + } else +#endif + { + JSString *str2 = js_ValueToString(cx, argv[0]); + if (!str2) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str2); + + /* + * Point sep at a local copy of str2's header because find_split + * will modify sep->length. + */ + tmp.length = JSSTRING_LENGTH(str2); + tmp.chars = JSSTRING_CHARS(str2); + sep = &tmp; + re = NULL; + } + + /* Use the second argument as the split limit, if given. */ + limited = (argc > 1) && !JSVAL_IS_VOID(argv[1]); + limit = 0; /* Avoid warning. */ + if (limited) { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + + /* Clamp limit between 0 and 1 + string length. */ + if (!js_DoubleToECMAUint32(cx, d, &limit)) + return JS_FALSE; + if (limit > JSSTRING_LENGTH(str)) + limit = 1 + JSSTRING_LENGTH(str); + } + + len = i = 0; + while ((j = find_split(cx, str, re, &i, sep)) >= 0) { + if (limited && len >= limit) + break; + sub = js_NewDependentString(cx, str, i, (size_t)(j - i), 0); + if (!sub) + return JS_FALSE; + v = STRING_TO_JSVAL(sub); + if (!JS_SetElement(cx, arrayobj, len, &v)) + return JS_FALSE; + len++; +#if JS_HAS_REGEXPS + /* + * Imitate perl's feature of including parenthesized substrings + * that matched part of the delimiter in the new array, after the + * split substring that was delimited. + */ + if (re && sep->chars) { + uintN num; + JSSubString *parsub; + + for (num = 0; num < cx->regExpStatics.parenCount; num++) { + if (limited && len >= limit) + break; + parsub = REGEXP_PAREN_SUBSTRING(&cx->regExpStatics, num); + sub = js_NewStringCopyN(cx, parsub->chars, parsub->length, + 0); + if (!sub) + return JS_FALSE; + v = STRING_TO_JSVAL(sub); + if (!JS_SetElement(cx, arrayobj, len, &v)) + return JS_FALSE; + len++; + } + sep->chars = NULL; + } +#endif + i = j + sep->length; + if (!JS_VERSION_IS_ECMA(cx)) { + /* + * Deviate from ECMA to imitate Perl, which omits a final + * split unless a limit argument is given and big enough. + */ + if (!limited && (size_t)i == JSSTRING_LENGTH(str)) + break; + } + } + ok = (j != -2); + } + return ok; +} + +#if JS_HAS_PERL_SUBSTR +static JSBool +str_substr(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) { + begin += length; + if (begin < 0) + begin = 0; + } else if (begin > length) { + begin = length; + } + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) + end = 0; + end += begin; + if (end > length) + end = length; + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif /* JS_HAS_PERL_SUBSTR */ + +#if JS_HAS_SEQUENCE_OPS +/* + * Python-esque sequence operations. + */ +static JSBool +str_concat(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str, *str2; + uintN i; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + for (i = 0; i < argc; i++) { + str2 = js_ValueToString(cx, argv[i]); + if (!str2) + return JS_FALSE; + argv[i] = STRING_TO_JSVAL(str2); + + str = js_ConcatStrings(cx, str, str2); + if (!str) + return JS_FALSE; + } + + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +str_slice(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + jsdouble d; + jsdouble length, begin, end; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (argc != 0) { + if (!js_ValueToNumber(cx, argv[0], &d)) + return JS_FALSE; + length = JSSTRING_LENGTH(str); + begin = js_DoubleToInteger(d); + if (begin < 0) { + begin += length; + if (begin < 0) + begin = 0; + } else if (begin > length) { + begin = length; + } + + if (argc == 1) { + end = length; + } else { + if (!js_ValueToNumber(cx, argv[1], &d)) + return JS_FALSE; + end = js_DoubleToInteger(d); + if (end < 0) { + end += length; + if (end < 0) + end = 0; + } else if (end > length) { + end = length; + } + if (end < begin) + end = begin; + } + + str = js_NewDependentString(cx, str, (size_t)begin, + (size_t)(end - begin), 0); + if (!str) + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} +#endif /* JS_HAS_SEQUENCE_OPS */ + +#if JS_HAS_STR_HTML_HELPERS +/* + * HTML composition aids. + */ +static JSBool +tagify(JSContext *cx, JSObject *obj, jsval *argv, + const char *begin, JSString *param, const char *end, + jsval *rval) +{ + JSString *str; + jschar *tagbuf; + size_t beglen, endlen, parlen, taglen; + size_t i, j; + + str = js_ValueToString(cx, OBJECT_TO_JSVAL(obj)); + if (!str) + return JS_FALSE; + argv[-1] = STRING_TO_JSVAL(str); + + if (!end) + end = begin; + + beglen = strlen(begin); + taglen = 1 + beglen + 1; /* '' */ + parlen = 0; /* Avoid warning. */ + if (param) { + parlen = JSSTRING_LENGTH(param); + taglen += 2 + parlen + 1; /* '="param"' */ + } + endlen = strlen(end); + taglen += JSSTRING_LENGTH(str) + 2 + endlen + 1; /* 'str' */ + + if (taglen >= ~(size_t)0 / sizeof(jschar)) { + JS_ReportOutOfMemory(cx); + return JS_FALSE; + } + + tagbuf = (jschar *) JS_malloc(cx, (taglen + 1) * sizeof(jschar)); + if (!tagbuf) + return JS_FALSE; + + j = 0; + tagbuf[j++] = '<'; + for (i = 0; i < beglen; i++) + tagbuf[j++] = (jschar)begin[i]; + if (param) { + tagbuf[j++] = '='; + tagbuf[j++] = '"'; + js_strncpy(&tagbuf[j], JSSTRING_CHARS(param), parlen); + j += parlen; + tagbuf[j++] = '"'; + } + tagbuf[j++] = '>'; + js_strncpy(&tagbuf[j], JSSTRING_CHARS(str), JSSTRING_LENGTH(str)); + j += JSSTRING_LENGTH(str); + tagbuf[j++] = '<'; + tagbuf[j++] = '/'; + for (i = 0; i < endlen; i++) + tagbuf[j++] = (jschar)end[i]; + tagbuf[j++] = '>'; + JS_ASSERT(j == taglen); + tagbuf[j] = 0; + + str = js_NewString(cx, tagbuf, taglen, 0); + if (!str) { + free((char *)tagbuf); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSBool +tagify_value(JSContext *cx, JSObject *obj, jsval *argv, + const char *begin, const char *end, + jsval *rval) +{ + JSString *param; + + param = js_ValueToString(cx, argv[0]); + if (!param) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(param); + return tagify(cx, obj, argv, begin, param, end, rval); +} + +static JSBool +str_bold(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "b", NULL, NULL, rval); +} + +static JSBool +str_italics(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "i", NULL, NULL, rval); +} + +static JSBool +str_fixed(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "tt", NULL, NULL, rval); +} + +static JSBool +str_fontsize(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "font size", "font", rval); +} + +static JSBool +str_fontcolor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + return tagify_value(cx, obj, argv, "font color", "font", rval); +} + +static JSBool +str_link(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "a href", "a", rval); +} + +static JSBool +str_anchor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify_value(cx, obj, argv, "a name", "a", rval); +} + +static JSBool +str_strike(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "strike", NULL, NULL, rval); +} + +static JSBool +str_small(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "small", NULL, NULL, rval); +} + +static JSBool +str_big(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "big", NULL, NULL, rval); +} + +static JSBool +str_blink(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "blink", NULL, NULL, rval); +} + +static JSBool +str_sup(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "sup", NULL, NULL, rval); +} + +static JSBool +str_sub(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + return tagify(cx, obj, argv, "sub", NULL, NULL, rval); +} +#endif /* JS_HAS_STR_HTML_HELPERS */ + +static JSFunctionSpec string_methods[] = { +#if JS_HAS_TOSOURCE + {"quote", str_quote, 0,JSFUN_GENERIC_NATIVE,0}, + {js_toSource_str, str_toSource, 0,0,0}, +#endif + + /* Java-like methods. */ + {js_toString_str, str_toString, 0,0,0}, + {js_valueOf_str, str_valueOf, 0,0,0}, + {"substring", str_substring, 2,JSFUN_GENERIC_NATIVE,0}, + {"toLowerCase", str_toLowerCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"toUpperCase", str_toUpperCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"charAt", str_charAt, 1,JSFUN_GENERIC_NATIVE,0}, + {"charCodeAt", str_charCodeAt, 1,JSFUN_GENERIC_NATIVE,0}, + {"indexOf", str_indexOf, 1,JSFUN_GENERIC_NATIVE,0}, + {"lastIndexOf", str_lastIndexOf, 1,JSFUN_GENERIC_NATIVE,0}, + {"toLocaleLowerCase", str_toLocaleLowerCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"toLocaleUpperCase", str_toLocaleUpperCase, 0,JSFUN_GENERIC_NATIVE,0}, + {"localeCompare", str_localeCompare, 1,JSFUN_GENERIC_NATIVE,0}, + + /* Perl-ish methods (search is actually Python-esque). */ +#if JS_HAS_REGEXPS + {"match", str_match, 1,JSFUN_GENERIC_NATIVE,2}, + {"search", str_search, 1,JSFUN_GENERIC_NATIVE,0}, + {"replace", str_replace, 2,JSFUN_GENERIC_NATIVE,0}, + {"split", str_split, 2,JSFUN_GENERIC_NATIVE,0}, +#endif +#if JS_HAS_PERL_SUBSTR + {"substr", str_substr, 2,JSFUN_GENERIC_NATIVE,0}, +#endif + + /* Python-esque sequence methods. */ +#if JS_HAS_SEQUENCE_OPS + {"concat", str_concat, 0,JSFUN_GENERIC_NATIVE,0}, + {"slice", str_slice, 0,JSFUN_GENERIC_NATIVE,0}, +#endif + + /* HTML string methods. */ +#if JS_HAS_STR_HTML_HELPERS + {"bold", str_bold, 0,0,0}, + {"italics", str_italics, 0,0,0}, + {"fixed", str_fixed, 0,0,0}, + {"fontsize", str_fontsize, 1,0,0}, + {"fontcolor", str_fontcolor, 1,0,0}, + {"link", str_link, 1,0,0}, + {"anchor", str_anchor, 1,0,0}, + {"strike", str_strike, 0,0,0}, + {"small", str_small, 0,0,0}, + {"big", str_big, 0,0,0}, + {"blink", str_blink, 0,0,0}, + {"sup", str_sup, 0,0,0}, + {"sub", str_sub, 0,0,0}, +#endif + + {0,0,0,0,0} +}; + +static JSBool +String(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) +{ + JSString *str; + + if (argc > 0) { + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + } else { + str = cx->runtime->emptyString; + } + if (!(cx->fp->flags & JSFRAME_CONSTRUCTING)) { + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; + } + OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, STRING_TO_JSVAL(str)); + return JS_TRUE; +} + +static JSBool +str_fromCharCode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + jschar *chars; + uintN i; + uint16 code; + JSString *str; + + chars = (jschar *) JS_malloc(cx, (argc + 1) * sizeof(jschar)); + if (!chars) + return JS_FALSE; + for (i = 0; i < argc; i++) { + if (!js_ValueToUint16(cx, argv[i], &code)) { + JS_free(cx, chars); + return JS_FALSE; + } + chars[i] = (jschar)code; + } + chars[i] = 0; + str = js_NewString(cx, chars, argc, 0); + if (!str) { + JS_free(cx, chars); + return JS_FALSE; + } + *rval = STRING_TO_JSVAL(str); + return JS_TRUE; +} + +static JSFunctionSpec string_static_methods[] = { + {"fromCharCode", str_fromCharCode, 1,0,0}, + {0,0,0,0,0} +}; + +static JSHashTable *deflated_string_cache; +#ifdef DEBUG +static uint32 deflated_string_cache_bytes; +#endif +#ifdef JS_THREADSAFE +static JSLock *deflated_string_cache_lock; +#endif + +JSBool +js_InitStringGlobals(void) +{ +#ifdef JS_THREADSAFE + /* Must come through here once in primordial thread to init safely! */ + if (!deflated_string_cache_lock) { + deflated_string_cache_lock = JS_NEW_LOCK(); + if (!deflated_string_cache_lock) + return JS_FALSE; + } +#endif + return JS_TRUE; +} + +void +js_FreeStringGlobals() +{ + if (deflated_string_cache) { + JS_HashTableDestroy(deflated_string_cache); + deflated_string_cache = NULL; + } +#ifdef JS_THREADSAFE + if (deflated_string_cache_lock) { + JS_DESTROY_LOCK(deflated_string_cache_lock); + deflated_string_cache_lock = NULL; + } +#endif +} + +JSBool +js_InitRuntimeStringState(JSContext *cx) +{ + JSRuntime *rt; + JSString *empty; + JSAtom *atom; + + rt = cx->runtime; + JS_ASSERT(!rt->emptyString); + + /* Make a permanently locked empty string. */ + empty = js_NewStringCopyN(cx, js_empty_ucstr, 0, GCF_LOCK); + if (!empty) + return JS_FALSE; + + /* Atomize it for scripts that use '' + x to convert x to string. */ + atom = js_AtomizeString(cx, empty, ATOM_PINNED); + if (!atom) + return JS_FALSE; + + rt->emptyString = empty; + rt->atomState.emptyAtom = atom; + return JS_TRUE; +} + +void +js_FinishRuntimeStringState(JSContext *cx) +{ + JSRuntime *rt = cx->runtime; + + js_UnlockGCThingRT(rt, rt->emptyString); + rt->emptyString = NULL; +} + +JSObject * +js_InitStringClass(JSContext *cx, JSObject *obj) +{ + JSObject *proto; + + /* Define the escape, unescape functions in the global object. */ + if (!JS_DefineFunctions(cx, obj, string_functions)) + return NULL; + + proto = JS_InitClass(cx, obj, NULL, &js_StringClass, String, 1, + string_props, string_methods, + NULL, string_static_methods); + if (!proto) + return NULL; + OBJ_SET_SLOT(cx, proto, JSSLOT_PRIVATE, + STRING_TO_JSVAL(cx->runtime->emptyString)); + return proto; +} + +JSString * +js_NewString(JSContext *cx, jschar *chars, size_t length, uintN gcflag) +{ + JSString *str; + + if (length > JSSTRING_LENGTH_MASK) { + JS_ReportOutOfMemory(cx); + return NULL; + } + + str = (JSString *) js_NewGCThing(cx, gcflag | GCX_STRING, sizeof(JSString)); + if (!str) + return NULL; + str->length = length; + str->chars = chars; +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveStrings); + JS_RUNTIME_METER(rt, totalStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->lengthSum += (double)length, + rt->lengthSquaredSum += (double)length * (double)length)); + } +#endif + return str; +} + +JSString * +js_NewDependentString(JSContext *cx, JSString *base, size_t start, + size_t length, uintN gcflag) +{ + JSDependentString *ds; + + if (length == 0) + return cx->runtime->emptyString; + + if (start == 0 && length == JSSTRING_LENGTH(base)) + return base; + + if (start > JSSTRDEP_START_MASK || + (start != 0 && length > JSSTRDEP_LENGTH_MASK)) { + return js_NewStringCopyN(cx, JSSTRING_CHARS(base) + start, length, + gcflag); + } + + ds = (JSDependentString *) + js_NewGCThing(cx, gcflag | GCX_MUTABLE_STRING, sizeof(JSString)); + if (!ds) + return NULL; + if (start == 0) { + JSPREFIX_SET_LENGTH(ds, length); + JSPREFIX_SET_BASE(ds, base); + } else { + JSSTRDEP_SET_START_AND_LENGTH(ds, start, length); + JSSTRDEP_SET_BASE(ds, base); + } +#ifdef DEBUG + { + JSRuntime *rt = cx->runtime; + JS_RUNTIME_METER(rt, liveDependentStrings); + JS_RUNTIME_METER(rt, totalDependentStrings); + JS_RUNTIME_METER(rt, liveStrings); + JS_RUNTIME_METER(rt, totalStrings); + JS_LOCK_RUNTIME_VOID(rt, + (rt->strdepLengthSum += (double)length, + rt->strdepLengthSquaredSum += (double)length * (double)length)); + JS_LOCK_RUNTIME_VOID(rt, + (rt->lengthSum += (double)length, + rt->lengthSquaredSum += (double)length * (double)length)); + } +#endif + return (JSString *)ds; +} + +#ifdef DEBUG +#include + +void printJSStringStats(JSRuntime *rt) { + double mean = 0., var = 0., sigma = 0.; + jsrefcount count = rt->totalStrings; + if (count > 0 && rt->lengthSum >= 0) { + mean = rt->lengthSum / count; + var = count * rt->lengthSquaredSum - rt->lengthSum * rt->lengthSum; + if (var < 0.0 || count <= 1) + var = 0.0; + else + var /= count * (count - 1); + + /* Windows says sqrt(0.0) is "-1.#J" (?!) so we must test. */ + sigma = (var != 0.) ? sqrt(var) : 0.; + } + fprintf(stderr, "%lu total strings, mean length %g (sigma %g)\n", + (unsigned long)count, mean, sigma); + + mean = var = sigma = 0.; + count = rt->totalDependentStrings; + if (count > 0 && rt->strdepLengthSum >= 0) { + mean = rt->strdepLengthSum / count; + var = count * rt->strdepLengthSquaredSum + - rt->strdepLengthSum * rt->strdepLengthSum; + if (var < 0.0 || count <= 1) + var = 0.0; + else + var /= count * (count - 1); + + /* Windows says sqrt(0.0) is "-1.#J" (?!) so we must test. */ + sigma = (var != 0.) ? sqrt(var) : 0.; + } + fprintf(stderr, "%lu total dependent strings, mean length %g (sigma %g)\n", + (unsigned long)count, mean, sigma); +} +#endif + +JSString * +js_NewStringCopyN(JSContext *cx, const jschar *s, size_t n, uintN gcflag) +{ + jschar *news; + JSString *str; + + news = (jschar *)JS_malloc(cx, (n + 1) * sizeof(jschar)); + if (!news) + return NULL; + js_strncpy(news, s, n); + news[n] = 0; + str = js_NewString(cx, news, n, gcflag); + if (!str) + JS_free(cx, news); + return str; +} + +JSString * +js_NewStringCopyZ(JSContext *cx, const jschar *s, uintN gcflag) +{ + size_t n, m; + jschar *news; + JSString *str; + + n = js_strlen(s); + m = (n + 1) * sizeof(jschar); + news = (jschar *) JS_malloc(cx, m); + if (!news) + return NULL; + memcpy(news, s, m); + str = js_NewString(cx, news, n, gcflag); + if (!str) + JS_free(cx, news); + return str; +} + +JS_STATIC_DLL_CALLBACK(JSHashNumber) +js_hash_string_pointer(const void *key) +{ + return (JSHashNumber)JS_PTR_TO_UINT32(key) >> JSVAL_TAGBITS; +} + +void +js_PurgeDeflatedStringCache(JSString *str) +{ + JSHashNumber hash; + JSHashEntry *he, **hep; + + if (!deflated_string_cache) + return; + + hash = js_hash_string_pointer(str); + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + hep = JS_HashTableRawLookup(deflated_string_cache, hash, str); + he = *hep; + if (he) { +#ifdef DEBUG + deflated_string_cache_bytes -= JSSTRING_LENGTH(str); +#endif + free(he->value); + JS_HashTableRawRemove(deflated_string_cache, hep, he); + } + JS_RELEASE_LOCK(deflated_string_cache_lock); +} + +void +js_FinalizeString(JSContext *cx, JSString *str) +{ + js_FinalizeStringRT(cx->runtime, str); +} + +void +js_FinalizeStringRT(JSRuntime *rt, JSString *str) +{ + JSBool valid; + + JS_RUNTIME_UNMETER(rt, liveStrings); + if (JSSTRING_IS_DEPENDENT(str)) { + /* If JSSTRFLAG_DEPENDENT is set, this string must be valid. */ + JS_ASSERT(JSSTRDEP_BASE(str)); + JS_RUNTIME_UNMETER(rt, liveDependentStrings); + valid = JS_TRUE; + } else { + /* A stillborn string has null chars, so is not valid. */ + valid = (str->chars != NULL); + if (valid) + free(str->chars); + } + if (valid) { + js_PurgeDeflatedStringCache(str); + str->chars = NULL; + } + str->length = 0; +} + +JSObject * +js_StringToObject(JSContext *cx, JSString *str) +{ + JSObject *obj; + + obj = js_NewObject(cx, &js_StringClass, NULL, NULL); + if (!obj) + return NULL; + OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, STRING_TO_JSVAL(str)); + return obj; +} + +JS_FRIEND_API(const char *) +js_ValueToPrintableString(JSContext *cx, jsval v) +{ + JSString *str; + const char *bytes; + + str = js_ValueToString(cx, v); + if (!str) + return NULL; + str = js_QuoteString(cx, str, 0); + if (!str) + return NULL; + bytes = js_GetStringBytes(str); + if (!bytes) + JS_ReportOutOfMemory(cx); + return bytes; +} + +JSString * +js_ValueToString(JSContext *cx, jsval v) +{ + JSObject *obj; + JSString *str; + + if (JSVAL_IS_OBJECT(v)) { + obj = JSVAL_TO_OBJECT(v); + if (!obj) + return ATOM_TO_STRING(cx->runtime->atomState.nullAtom); + if (!OBJ_DEFAULT_VALUE(cx, obj, JSTYPE_STRING, &v)) + return NULL; + } + if (JSVAL_IS_STRING(v)) { + str = JSVAL_TO_STRING(v); + } else if (JSVAL_IS_INT(v)) { + str = js_NumberToString(cx, JSVAL_TO_INT(v)); + } else if (JSVAL_IS_DOUBLE(v)) { + str = js_NumberToString(cx, *JSVAL_TO_DOUBLE(v)); + } else if (JSVAL_IS_BOOLEAN(v)) { + str = js_BooleanToString(cx, JSVAL_TO_BOOLEAN(v)); + } else { + str = ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[JSTYPE_VOID]); + } + return str; +} + +JSString * +js_ValueToSource(JSContext *cx, jsval v) +{ + if (JSVAL_IS_STRING(v)) + return js_QuoteString(cx, JSVAL_TO_STRING(v), '"'); + if (JSVAL_IS_PRIMITIVE(v)) { + /* Special case to preserve negative zero, _contra_ toString. */ + if (JSVAL_IS_DOUBLE(v) && JSDOUBLE_IS_NEGZERO(*JSVAL_TO_DOUBLE(v))) { + /* NB: _ucNstr rather than _ucstr to indicate non-terminated. */ + static const jschar js_negzero_ucNstr[] = {'-', '0'}; + + return js_NewStringCopyN(cx, js_negzero_ucNstr, 2, 0); + } + } else { + if (!js_TryMethod(cx, JSVAL_TO_OBJECT(v), + cx->runtime->atomState.toSourceAtom, + 0, NULL, &v)) { + return NULL; + } + } + return js_ValueToString(cx, v); +} + +JSHashNumber +js_HashString(JSString *str) +{ + JSHashNumber h; + const jschar *s; + size_t n; + + h = 0; + for (s = JSSTRING_CHARS(str), n = JSSTRING_LENGTH(str); n; s++, n--) + h = (h >> (JS_HASH_BITS - 4)) ^ (h << 4) ^ *s; + return h; +} + +intN +js_CompareStrings(JSString *str1, JSString *str2) +{ + size_t l1, l2, n, i; + const jschar *s1, *s2; + intN cmp; + + l1 = JSSTRING_LENGTH(str1), l2 = JSSTRING_LENGTH(str2); + s1 = JSSTRING_CHARS(str1), s2 = JSSTRING_CHARS(str2); + n = JS_MIN(l1, l2); + for (i = 0; i < n; i++) { + cmp = s1[i] - s2[i]; + if (cmp != 0) + return cmp; + } + return (intN)(l1 - l2); +} + +size_t +js_strlen(const jschar *s) +{ + const jschar *t; + + for (t = s; *t != 0; t++) + continue; + return (size_t)(t - s); +} + +jschar * +js_strchr(const jschar *s, jschar c) +{ + while (*s != 0) { + if (*s == c) + return (jschar *)s; + s++; + } + return NULL; +} + +jschar * +js_strchr_limit(const jschar *s, jschar c, const jschar *limit) +{ + while (s < limit) { + if (*s == c) + return (jschar *)s; + s++; + } + return NULL; +} + +const jschar * +js_SkipWhiteSpace(const jschar *s) +{ + /* JS_ISSPACE is false on a null. */ + while (JS_ISSPACE(*s)) + s++; + return s; +} + +#define INFLATE_STRING_BODY \ + for (i = 0; i < length; i++) \ + chars[i] = (unsigned char) bytes[i]; \ + chars[i] = 0; + +void +js_InflateStringToBuffer(jschar *chars, const char *bytes, size_t length) +{ + size_t i; + + INFLATE_STRING_BODY +} + +jschar * +js_InflateString(JSContext *cx, const char *bytes, size_t length) +{ + jschar *chars; + size_t i; + + chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar)); + if (!chars) + return NULL; + + INFLATE_STRING_BODY + return chars; +} + +#define DEFLATE_STRING_BODY \ + for (i = 0; i < length; i++) \ + bytes[i] = (char) chars[i]; \ + bytes[i] = 0; + +void +js_DeflateStringToBuffer(char *bytes, const jschar *chars, size_t length) +{ + size_t i; + + DEFLATE_STRING_BODY +} + +/* + * May be called with null cx by js_GetStringBytes, see below. + */ +char * +js_DeflateString(JSContext *cx, const jschar *chars, size_t length) +{ + size_t i, size; + char *bytes; + + size = (length + 1) * sizeof(char); + bytes = (char *) (cx ? JS_malloc(cx, size) : malloc(size)); + if (!bytes) + return NULL; + + DEFLATE_STRING_BODY + return bytes; +} + +static JSHashTable * +GetDeflatedStringCache(void) +{ + JSHashTable *cache; + + cache = deflated_string_cache; + if (!cache) { + cache = JS_NewHashTable(8, js_hash_string_pointer, + JS_CompareValues, JS_CompareValues, + NULL, NULL); + deflated_string_cache = cache; + } + return cache; +} + +JSBool +js_SetStringBytes(JSString *str, char *bytes, size_t length) +{ + JSHashTable *cache; + JSBool ok; + JSHashNumber hash; + JSHashEntry **hep; + + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + + cache = GetDeflatedStringCache(); + if (!cache) { + ok = JS_FALSE; + } else { + hash = js_hash_string_pointer(str); + hep = JS_HashTableRawLookup(cache, hash, str); + JS_ASSERT(*hep == NULL); + ok = JS_HashTableRawAdd(cache, hep, hash, str, bytes) != NULL; +#ifdef DEBUG + if (ok) + deflated_string_cache_bytes += length; +#endif + } + + JS_RELEASE_LOCK(deflated_string_cache_lock); + return ok; +} + +char * +js_GetStringBytes(JSString *str) +{ + JSHashTable *cache; + char *bytes; + JSHashNumber hash; + JSHashEntry *he, **hep; + + JS_ACQUIRE_LOCK(deflated_string_cache_lock); + + cache = GetDeflatedStringCache(); + if (!cache) { + bytes = NULL; + } else { + hash = js_hash_string_pointer(str); + hep = JS_HashTableRawLookup(cache, hash, str); + he = *hep; + if (he) { + bytes = (char *) he->value; + + /* Try to catch failure to JS_ShutDown between runtime epochs. */ + JS_ASSERT((*bytes == '\0' && JSSTRING_LENGTH(str) == 0) || + *bytes == (char) JSSTRING_CHARS(str)[0]); + } else { + bytes = js_DeflateString(NULL, JSSTRING_CHARS(str), + JSSTRING_LENGTH(str)); + if (bytes) { + if (JS_HashTableRawAdd(cache, hep, hash, str, bytes)) { +#ifdef DEBUG + deflated_string_cache_bytes += JSSTRING_LENGTH(str); +#endif + } else { + free(bytes); + bytes = NULL; + } + } + } + } + + JS_RELEASE_LOCK(deflated_string_cache_lock); + return bytes; +} + +/* + * From java.lang.Character.java: + * + * The character properties are currently encoded into 32 bits in the + * following manner: + * + * 10 bits signed offset used for converting case + * 1 bit if 1, adding the signed offset converts the character to + * lowercase + * 1 bit if 1, subtracting the signed offset converts the character to + * uppercase + * 1 bit if 1, character has a titlecase equivalent (possibly itself) + * 3 bits 0 may not be part of an identifier + * 1 ignorable control; may continue a Unicode identifier or JS + * identifier + * 2 may continue a JS identifier but not a Unicode identifier + * (unused) + * 3 may continue a Unicode identifier or JS identifier + * 4 is a JS whitespace character + * 5 may start or continue a JS identifier; + * may continue but not start a Unicode identifier (_) + * 6 may start or continue a JS identifier but not a Unicode + * identifier ($) + * 7 may start or continue a Unicode identifier or JS identifier + * Thus: + * 5, 6, 7 may start a JS identifier + * 1, 2, 3, 5, 6, 7 may continue a JS identifier + * 7 may start a Unicode identifier + * 1, 3, 5, 7 may continue a Unicode identifier + * 1 is ignorable within an identifier + * 4 is JS whitespace + * 2 bits 0 this character has no numeric property + * 1 adding the digit offset to the character code and then + * masking with 0x1F will produce the desired numeric value + * 2 this character has a "strange" numeric value + * 3 a JS supradecimal digit: adding the digit offset to the + * character code, then masking with 0x1F, then adding 10 + * will produce the desired numeric value + * 5 bits digit offset + * 1 bit XML 1.0 name start character + * 1 bit XML 1.0 name character + * 2 bits reserved for future use + * 5 bits character type + */ + +/* The X table has 1024 entries for a total of 1024 bytes. */ + +const uint8 js_X[] = { + 0, 1, 2, 3, 4, 5, 6, 7, /* 0x0000 */ + 8, 9, 10, 11, 12, 13, 14, 15, /* 0x0200 */ + 16, 17, 18, 19, 20, 21, 22, 23, /* 0x0400 */ + 24, 25, 26, 27, 28, 28, 28, 28, /* 0x0600 */ + 28, 28, 28, 28, 29, 30, 31, 32, /* 0x0800 */ + 33, 34, 35, 36, 37, 38, 39, 40, /* 0x0A00 */ + 41, 42, 43, 44, 45, 46, 28, 28, /* 0x0C00 */ + 47, 48, 49, 50, 51, 52, 53, 28, /* 0x0E00 */ + 28, 28, 54, 55, 56, 57, 58, 59, /* 0x1000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x1C00 */ + 60, 60, 61, 62, 63, 64, 65, 66, /* 0x1E00 */ + 67, 68, 69, 70, 71, 72, 73, 74, /* 0x2000 */ + 75, 75, 75, 76, 77, 78, 28, 28, /* 0x2200 */ + 79, 80, 81, 82, 83, 83, 84, 85, /* 0x2400 */ + 86, 85, 28, 28, 87, 88, 89, 28, /* 0x2600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2C00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x2E00 */ + 90, 91, 92, 93, 94, 56, 95, 28, /* 0x3000 */ + 96, 97, 98, 99, 83, 100, 83, 101, /* 0x3200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3C00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x3E00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4A00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0x4C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x4E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x5E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x6E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x7E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8C00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x8E00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9A00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0x9C00 */ + 56, 56, 56, 56, 56, 56, 102, 28, /* 0x9E00 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA000 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA200 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA400 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA600 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xA800 */ + 28, 28, 28, 28, 28, 28, 28, 28, /* 0xAA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xAC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xAE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xB800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xBE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC400 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC600 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xC800 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCA00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCC00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xCE00 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD000 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD200 */ + 56, 56, 56, 56, 56, 56, 56, 56, /* 0xD400 */ + 56, 56, 56, 56, 56, 56, 103, 28, /* 0xD600 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xD800 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDA00 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDC00 */ +104, 104, 104, 104, 104, 104, 104, 104, /* 0xDE00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE000 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE200 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE400 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE600 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xE800 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEA00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEC00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xEE00 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF000 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF200 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF400 */ +105, 105, 105, 105, 105, 105, 105, 105, /* 0xF600 */ +105, 105, 105, 105, 56, 56, 56, 56, /* 0xF800 */ +106, 28, 28, 28, 107, 108, 109, 110, /* 0xFA00 */ + 56, 56, 56, 56, 111, 112, 113, 114, /* 0xFC00 */ +115, 116, 56, 117, 118, 119, 120, 121 /* 0xFE00 */ +}; + +/* The Y table has 7808 entries for a total of 7808 bytes. */ + +const uint8 js_Y[] = { + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 0, 1, 1, 1, 1, 1, 0, 0, /* 0 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */ + 2, 3, 3, 3, 4, 3, 3, 3, /* 0 */ + 5, 6, 3, 7, 3, 8, 3, 3, /* 0 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 0 */ + 9, 9, 3, 3, 7, 7, 7, 3, /* 0 */ + 3, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 1 */ + 10, 10, 10, 5, 3, 6, 11, 12, /* 1 */ + 11, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 1 */ + 13, 13, 13, 5, 7, 6, 7, 0, /* 1 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */ + 2, 3, 4, 4, 4, 4, 15, 15, /* 2 */ + 11, 15, 16, 5, 7, 8, 15, 11, /* 2 */ + 15, 7, 17, 17, 11, 16, 15, 3, /* 2 */ + 11, 18, 16, 6, 19, 19, 19, 3, /* 2 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 7, /* 3 */ + 20, 20, 20, 20, 20, 20, 20, 16, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 7, /* 3 */ + 21, 21, 21, 21, 21, 21, 21, 22, /* 3 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 4 */ + 25, 26, 23, 24, 23, 24, 23, 24, /* 4 */ + 16, 23, 24, 23, 24, 23, 24, 23, /* 4 */ + 24, 23, 24, 23, 24, 23, 24, 23, /* 5 */ + 24, 16, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 5 */ + 27, 23, 24, 23, 24, 23, 24, 28, /* 5 */ + 16, 29, 23, 24, 23, 24, 30, 23, /* 6 */ + 24, 31, 31, 23, 24, 16, 32, 32, /* 6 */ + 33, 23, 24, 31, 34, 16, 35, 36, /* 6 */ + 23, 24, 16, 16, 35, 37, 16, 38, /* 6 */ + 23, 24, 23, 24, 23, 24, 38, 23, /* 6 */ + 24, 39, 40, 16, 23, 24, 39, 23, /* 6 */ + 24, 41, 41, 23, 24, 23, 24, 42, /* 6 */ + 23, 24, 16, 40, 23, 24, 40, 40, /* 6 */ + 40, 40, 40, 40, 43, 44, 45, 43, /* 7 */ + 44, 45, 43, 44, 45, 23, 24, 23, /* 7 */ + 24, 23, 24, 23, 24, 23, 24, 23, /* 7 */ + 24, 23, 24, 23, 24, 16, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 7 */ + 16, 43, 44, 45, 23, 24, 46, 46, /* 7 */ + 46, 46, 23, 24, 23, 24, 23, 24, /* 7 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 8 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 9 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 9 */ + 16, 16, 16, 47, 48, 16, 49, 49, /* 9 */ + 50, 50, 16, 51, 16, 16, 16, 16, /* 9 */ + 49, 16, 16, 52, 16, 16, 16, 16, /* 9 */ + 53, 54, 16, 16, 16, 16, 16, 54, /* 9 */ + 16, 16, 55, 16, 16, 16, 16, 16, /* 9 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 9 */ + 16, 16, 16, 56, 16, 16, 16, 16, /* 10 */ + 56, 16, 57, 57, 16, 16, 16, 16, /* 10 */ + 16, 16, 58, 16, 16, 16, 16, 16, /* 10 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 10 */ + 16, 16, 16, 16, 16, 16, 16, 16, /* 10 */ + 16, 46, 46, 46, 46, 46, 46, 46, /* 10 */ + 59, 59, 59, 59, 59, 59, 59, 59, /* 10 */ + 59, 11, 11, 59, 59, 59, 59, 59, /* 10 */ + 59, 59, 11, 11, 11, 11, 11, 11, /* 11 */ + 11, 11, 11, 11, 11, 11, 11, 11, /* 11 */ + 59, 59, 11, 11, 11, 11, 11, 11, /* 11 */ + 11, 11, 11, 11, 11, 11, 11, 46, /* 11 */ + 59, 59, 59, 59, 59, 11, 11, 11, /* 11 */ + 11, 11, 46, 46, 46, 46, 46, 46, /* 11 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 11 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 11 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 12 */ + 60, 60, 60, 60, 60, 60, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 60, 60, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 13 */ + 46, 46, 46, 46, 3, 3, 46, 46, /* 13 */ + 46, 46, 59, 46, 46, 46, 3, 46, /* 13 */ + 46, 46, 46, 46, 11, 11, 61, 3, /* 14 */ + 62, 62, 62, 46, 63, 46, 64, 64, /* 14 */ + 16, 20, 20, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 46, 20, 20, 20, 20, 20, /* 14 */ + 20, 20, 20, 20, 65, 66, 66, 66, /* 14 */ + 16, 21, 21, 21, 21, 21, 21, 21, /* 14 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 14 */ + 21, 21, 16, 21, 21, 21, 21, 21, /* 15 */ + 21, 21, 21, 21, 67, 68, 68, 46, /* 15 */ + 69, 70, 38, 38, 38, 71, 72, 46, /* 15 */ + 46, 46, 38, 46, 38, 46, 38, 46, /* 15 */ + 38, 46, 23, 24, 23, 24, 23, 24, /* 15 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 15 */ + 73, 74, 16, 40, 46, 46, 46, 46, /* 15 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 15 */ + 46, 75, 75, 75, 75, 75, 75, 75, /* 16 */ + 75, 75, 75, 75, 75, 46, 75, 75, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 20, 20, 20, 20, 20, 20, 20, 20, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 16 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 17 */ + 21, 21, 21, 21, 21, 21, 21, 21, /* 17 */ + 46, 74, 74, 74, 74, 74, 74, 74, /* 17 */ + 74, 74, 74, 74, 74, 46, 74, 74, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 17 */ + 23, 24, 15, 60, 60, 60, 60, 46, /* 18 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 18 */ + 40, 23, 24, 23, 24, 46, 46, 23, /* 19 */ + 24, 46, 46, 23, 24, 46, 46, 46, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 23, 24, /* 19 */ + 23, 24, 23, 24, 46, 46, 23, 24, /* 19 */ + 23, 24, 23, 24, 23, 24, 46, 46, /* 19 */ + 23, 24, 46, 46, 46, 46, 46, 46, /* 19 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 20 */ + 46, 76, 76, 76, 76, 76, 76, 76, /* 20 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 20 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 21 */ + 76, 76, 76, 76, 76, 76, 76, 76, /* 21 */ + 76, 76, 76, 76, 76, 76, 76, 46, /* 21 */ + 46, 59, 3, 3, 3, 3, 3, 3, /* 21 */ + 46, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 77, /* 21 */ + 77, 77, 77, 77, 77, 77, 77, 16, /* 22 */ + 46, 3, 46, 46, 46, 46, 46, 46, /* 22 */ + 46, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 46, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 60, 60, 60, 60, 60, 60, /* 22 */ + 60, 60, 46, 60, 60, 60, 3, 60, /* 22 */ + 3, 60, 60, 3, 60, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 23 */ + 40, 40, 40, 46, 46, 46, 46, 46, /* 23 */ + 40, 40, 40, 3, 3, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 23 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 24 */ + 46, 46, 46, 46, 3, 46, 46, 46, /* 24 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 24 */ + 46, 46, 46, 3, 46, 46, 46, 3, /* 24 */ + 46, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 24 */ + 40, 40, 40, 46, 46, 46, 46, 46, /* 24 */ + 59, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 60, 60, 60, 60, 60, /* 25 */ + 60, 60, 60, 46, 46, 46, 46, 46, /* 25 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 25 */ + 78, 78, 78, 78, 78, 78, 78, 78, /* 25 */ + 78, 78, 3, 3, 3, 3, 46, 46, /* 25 */ + 60, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 25 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 26 */ + 46, 46, 40, 40, 40, 40, 40, 46, /* 26 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 27 */ + 40, 40, 40, 40, 40, 40, 40, 46, /* 27 */ + 40, 40, 40, 40, 3, 40, 60, 60, /* 27 */ + 60, 60, 60, 60, 60, 79, 79, 60, /* 27 */ + 60, 60, 60, 60, 60, 59, 59, 60, /* 27 */ + 60, 15, 60, 60, 60, 60, 46, 46, /* 27 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 27 */ + 9, 9, 46, 46, 46, 46, 46, 46, /* 27 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 28 */ + 46, 60, 60, 80, 46, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 29 */ + 40, 40, 40, 40, 40, 40, 40, 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*/ + 40, 40, 40, 40, 40, 40, 40, 40, /* 110 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 110 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 111 */ + 40, 40, 40, 40, 40, 40, 5, 6, /* 111 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 112 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 112 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 113 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 114 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 114 */ + 40, 40, 40, 40, 46, 46, 46, 46, /* 114 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 60, 60, 60, 60, 46, 46, 46, 46, /* 115 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 115 */ + 3, 8, 8, 12, 12, 5, 6, 5, /* 115 */ + 6, 5, 6, 5, 6, 5, 6, 5, /* 115 */ + 6, 5, 6, 5, 6, 46, 46, 46, /* 116 */ + 46, 3, 3, 3, 3, 12, 12, 12, /* 116 */ + 3, 3, 3, 46, 3, 3, 3, 3, /* 116 */ + 8, 5, 6, 5, 6, 5, 6, 3, /* 116 */ + 3, 3, 7, 8, 7, 7, 7, 46, /* 116 */ + 3, 4, 3, 3, 46, 46, 46, 46, /* 116 */ + 40, 40, 40, 46, 40, 46, 40, 40, /* 116 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 116 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 117 */ + 40, 40, 40, 40, 40, 46, 46, 104, /* 117 */ + 46, 3, 3, 3, 4, 3, 3, 3, /* 118 */ + 5, 6, 3, 7, 3, 8, 3, 3, /* 118 */ + 9, 9, 9, 9, 9, 9, 9, 9, /* 118 */ + 9, 9, 3, 3, 7, 7, 7, 3, /* 118 */ + 3, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 10, 10, 10, 10, 10, /* 118 */ + 10, 10, 10, 5, 3, 6, 11, 12, /* 118 */ + 11, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 13, 13, 13, 13, 13, /* 119 */ + 13, 13, 13, 5, 7, 6, 7, 46, /* 119 */ + 46, 3, 5, 6, 3, 3, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 59, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 119 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 59, 59, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 40, /* 120 */ + 40, 40, 40, 40, 40, 40, 40, 46, /* 120 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 40, 40, 40, /* 121 */ + 46, 46, 40, 40, 40, 46, 46, 46, /* 121 */ + 4, 4, 7, 11, 15, 4, 4, 46, /* 121 */ + 7, 7, 7, 7, 7, 15, 15, 46, /* 121 */ + 46, 46, 46, 46, 46, 46, 46, 46, /* 121 */ + 46, 46, 46, 46, 46, 15, 46, 46 /* 121 */ +}; + +/* The A table has 124 entries for a total of 496 bytes. */ + +const uint32 js_A[] = { +0x0001000F, /* 0 Cc, ignorable */ +0x0004000F, /* 1 Cc, whitespace */ +0x0004000C, /* 2 Zs, whitespace */ +0x00000018, /* 3 Po */ +0x0006001A, /* 4 Sc, currency */ +0x00000015, /* 5 Ps */ +0x00000016, /* 6 Pe */ +0x00000019, /* 7 Sm */ +0x00000014, /* 8 Pd */ +0x00036089, /* 9 Nd, identifier part, decimal 16 */ +0x0827FF81, /* 10 Lu, hasLower (add 32), identifier start, supradecimal 31 */ +0x0000001B, /* 11 Sk */ +0x00050017, /* 12 Pc, underscore */ +0x0817FF82, /* 13 Ll, hasUpper (subtract 32), identifier start, supradecimal 31 */ +0x0000000C, /* 14 Zs */ +0x0000001C, /* 15 So */ +0x00070182, /* 16 Ll, identifier start */ +0x0000600B, /* 17 No, decimal 16 */ +0x0000500B, /* 18 No, decimal 8 */ +0x0000800B, /* 19 No, strange */ +0x08270181, /* 20 Lu, hasLower (add 32), identifier start */ +0x08170182, /* 21 Ll, hasUpper (subtract 32), identifier start */ +0xE1D70182, /* 22 Ll, hasUpper (subtract -121), identifier start */ +0x00670181, /* 23 Lu, hasLower (add 1), identifier start */ +0x00570182, /* 24 Ll, hasUpper (subtract 1), identifier start */ +0xCE670181, /* 25 Lu, hasLower (add -199), identifier start */ +0x3A170182, /* 26 Ll, hasUpper (subtract 232), identifier start */ +0xE1E70181, /* 27 Lu, hasLower (add -121), identifier start */ +0x4B170182, /* 28 Ll, hasUpper (subtract 300), identifier start */ +0x34A70181, /* 29 Lu, hasLower (add 210), identifier start */ +0x33A70181, /* 30 Lu, hasLower (add 206), identifier start */ +0x33670181, /* 31 Lu, hasLower (add 205), identifier start */ +0x32A70181, /* 32 Lu, hasLower (add 202), identifier start */ +0x32E70181, /* 33 Lu, hasLower (add 203), identifier start */ +0x33E70181, /* 34 Lu, hasLower (add 207), identifier start */ +0x34E70181, /* 35 Lu, hasLower (add 211), identifier start */ +0x34670181, /* 36 Lu, hasLower (add 209), identifier start */ +0x35670181, /* 37 Lu, hasLower (add 213), identifier start */ +0x00070181, /* 38 Lu, identifier start */ +0x36A70181, /* 39 Lu, hasLower (add 218), identifier start */ +0x00070185, /* 40 Lo, identifier start */ +0x36670181, /* 41 Lu, hasLower (add 217), identifier start */ +0x36E70181, /* 42 Lu, hasLower (add 219), identifier start */ +0x00AF0181, /* 43 Lu, hasLower (add 2), hasTitle, identifier start */ +0x007F0183, /* 44 Lt, hasUpper (subtract 1), hasLower (add 1), hasTitle, identifier start */ +0x009F0182, /* 45 Ll, hasUpper (subtract 2), hasTitle, identifier start */ +0x00000000, /* 46 unassigned */ +0x34970182, /* 47 Ll, hasUpper (subtract 210), identifier start */ +0x33970182, /* 48 Ll, hasUpper (subtract 206), identifier start */ +0x33570182, /* 49 Ll, hasUpper (subtract 205), identifier start */ +0x32970182, /* 50 Ll, hasUpper (subtract 202), identifier start */ +0x32D70182, /* 51 Ll, hasUpper (subtract 203), identifier start */ +0x33D70182, /* 52 Ll, hasUpper (subtract 207), identifier start */ +0x34570182, /* 53 Ll, hasUpper (subtract 209), identifier start */ +0x34D70182, /* 54 Ll, hasUpper (subtract 211), identifier start */ +0x35570182, /* 55 Ll, hasUpper (subtract 213), identifier start */ +0x36970182, /* 56 Ll, hasUpper (subtract 218), identifier start */ +0x36570182, /* 57 Ll, hasUpper (subtract 217), identifier start */ +0x36D70182, /* 58 Ll, hasUpper (subtract 219), identifier start */ +0x00070084, /* 59 Lm, identifier start */ +0x00030086, /* 60 Mn, identifier part */ +0x09A70181, /* 61 Lu, hasLower (add 38), identifier start */ +0x09670181, /* 62 Lu, hasLower (add 37), identifier start */ +0x10270181, /* 63 Lu, hasLower (add 64), identifier start */ +0x0FE70181, /* 64 Lu, hasLower (add 63), identifier start */ +0x09970182, /* 65 Ll, hasUpper (subtract 38), identifier start */ +0x09570182, /* 66 Ll, hasUpper (subtract 37), identifier start */ +0x10170182, /* 67 Ll, hasUpper (subtract 64), identifier start */ +0x0FD70182, /* 68 Ll, hasUpper (subtract 63), identifier start */ +0x0F970182, /* 69 Ll, hasUpper (subtract 62), identifier start */ +0x0E570182, /* 70 Ll, hasUpper (subtract 57), identifier start */ +0x0BD70182, /* 71 Ll, hasUpper (subtract 47), identifier start */ +0x0D970182, /* 72 Ll, hasUpper (subtract 54), identifier start */ +0x15970182, /* 73 Ll, hasUpper (subtract 86), identifier start */ +0x14170182, /* 74 Ll, hasUpper (subtract 80), identifier start */ +0x14270181, /* 75 Lu, hasLower (add 80), identifier start */ +0x0C270181, /* 76 Lu, hasLower (add 48), identifier start */ +0x0C170182, /* 77 Ll, hasUpper (subtract 48), identifier start */ +0x00034089, /* 78 Nd, identifier part, decimal 0 */ +0x00000087, /* 79 Me */ +0x00030088, /* 80 Mc, identifier part */ +0x00037489, /* 81 Nd, identifier part, decimal 26 */ +0x00005A0B, /* 82 No, decimal 13 */ +0x00006E0B, /* 83 No, decimal 23 */ +0x0000740B, /* 84 No, decimal 26 */ +0x0000000B, /* 85 No */ +0xFE170182, /* 86 Ll, hasUpper (subtract -8), identifier start */ +0xFE270181, /* 87 Lu, hasLower (add -8), identifier start */ +0xED970182, /* 88 Ll, hasUpper (subtract -74), identifier start */ +0xEA970182, /* 89 Ll, hasUpper (subtract -86), identifier start */ +0xE7170182, /* 90 Ll, hasUpper (subtract -100), identifier start */ +0xE0170182, /* 91 Ll, hasUpper (subtract -128), identifier start */ +0xE4170182, /* 92 Ll, hasUpper (subtract -112), identifier start */ +0xE0970182, /* 93 Ll, hasUpper (subtract -126), identifier start */ +0xFDD70182, /* 94 Ll, hasUpper (subtract -9), identifier start */ +0xEDA70181, /* 95 Lu, hasLower (add -74), identifier start */ +0xFDE70181, /* 96 Lu, hasLower (add -9), identifier start */ +0xEAA70181, /* 97 Lu, hasLower (add -86), identifier start */ +0xE7270181, /* 98 Lu, hasLower (add -100), identifier start */ +0xFE570182, /* 99 Ll, hasUpper (subtract -7), identifier start */ +0xE4270181, /* 100 Lu, hasLower (add -112), identifier start */ +0xFE670181, /* 101 Lu, hasLower (add -7), identifier start */ +0xE0270181, /* 102 Lu, hasLower (add -128), identifier start */ +0xE0A70181, /* 103 Lu, hasLower (add -126), identifier start */ +0x00010010, /* 104 Cf, ignorable */ +0x0004000D, /* 105 Zl, whitespace */ +0x0004000E, /* 106 Zp, whitespace */ +0x0000400B, /* 107 No, decimal 0 */ +0x0000440B, /* 108 No, decimal 2 */ +0x0427438A, /* 109 Nl, hasLower (add 16), identifier start, decimal 1 */ +0x0427818A, /* 110 Nl, hasLower (add 16), identifier start, strange */ +0x0417638A, /* 111 Nl, hasUpper (subtract 16), identifier start, decimal 17 */ +0x0417818A, /* 112 Nl, hasUpper (subtract 16), identifier start, strange */ +0x0007818A, /* 113 Nl, identifier start, strange */ +0x0000420B, /* 114 No, decimal 1 */ +0x0000720B, /* 115 No, decimal 25 */ +0x06A0001C, /* 116 So, hasLower (add 26) */ +0x0690001C, /* 117 So, hasUpper (subtract 26) */ +0x00006C0B, /* 118 No, decimal 22 */ +0x0000560B, /* 119 No, decimal 11 */ +0x0007738A, /* 120 Nl, identifier start, decimal 25 */ +0x0007418A, /* 121 Nl, identifier start, decimal 0 */ +0x00000013, /* 122 Cs */ +0x00000012 /* 123 Co */ +}; + +const jschar js_uriReservedPlusPound_ucstr[] = + {';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '#', 0}; +const jschar js_uriUnescaped_ucstr[] = + {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + '-', '_', '.', '!', '~', '*', '\'', '(', ')', 0}; + +#define URI_CHUNK 64U + +/* Concatenate jschars onto an unshared/newborn JSString. */ +static JSBool +AddCharsToURI(JSContext *cx, JSString *str, const jschar *chars, size_t length) +{ + size_t total; + + JS_ASSERT(!JSSTRING_IS_DEPENDENT(str)); + total = str->length + length + 1; + if (!str->chars || + JS_HOWMANY(total, URI_CHUNK) > JS_HOWMANY(str->length + 1, URI_CHUNK)) { + total = JS_ROUNDUP(total, URI_CHUNK); + str->chars = JS_realloc(cx, str->chars, total * sizeof(jschar)); + if (!str->chars) + return JS_FALSE; + } + js_strncpy(str->chars + str->length, chars, length); + str->length += length; + str->chars[str->length] = 0; + return JS_TRUE; +} + +/* + * ECMA 3, 15.1.3 URI Handling Function Properties + * + * The following are implementations of the algorithms + * given in the ECMA specification for the hidden functions + * 'Encode' and 'Decode'. + */ +static JSBool +Encode(JSContext *cx, JSString *str, const jschar *unescapedSet, + const jschar *unescapedSet2, jsval *rval) +{ + size_t length, j, k, L; + jschar *chars, C, C2; + uint32 V; + uint8 utf8buf[6]; + jschar hexBuf[4]; + static const char HexDigits[] = "0123456789ABCDEF"; /* NB: uppercase */ + JSString *R; + + length = JSSTRING_LENGTH(str); + if (length == 0) { + *rval = STRING_TO_JSVAL(cx->runtime->emptyString); + return JS_TRUE; + } + + R = js_NewString(cx, NULL, 0, 0); + if (!R) + return JS_FALSE; + + hexBuf[0] = '%'; + hexBuf[3] = 0; + chars = JSSTRING_CHARS(str); + for (k = 0; k < length; k++) { + C = chars[k]; + if (js_strchr(unescapedSet, C) || + (unescapedSet2 && js_strchr(unescapedSet2, C))) { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } else { + if ((C >= 0xDC00) && (C <= 0xDFFF)) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + if (C < 0xD800 || C > 0xDBFF) { + V = C; + } else { + k++; + if (k == length) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + C2 = chars[k]; + if ((C2 < 0xDC00) || (C2 > 0xDFFF)) { + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, + JSMSG_BAD_URI, NULL); + return JS_FALSE; + } + V = ((C - 0xD800) << 10) + (C2 - 0xDC00) + 0x10000; + } + L = OneUcs4ToUtf8Char(utf8buf, V); + for (j = 0; j < L; j++) { + hexBuf[1] = HexDigits[utf8buf[j] >> 4]; + hexBuf[2] = HexDigits[utf8buf[j] & 0xf]; + if (!AddCharsToURI(cx, R, hexBuf, 3)) + return JS_FALSE; + } + } + } + + /* + * Shrinking realloc can fail (e.g., with a BSD-style allocator), but we + * don't worry about that case here. Worst case, R hangs onto URI_CHUNK-1 + * more jschars than it needs. + */ + chars = (jschar *) JS_realloc(cx, R->chars, (R->length+1) * sizeof(jschar)); + if (chars) + R->chars = chars; + *rval = STRING_TO_JSVAL(R); + return JS_TRUE; +} + +static JSBool +Decode(JSContext *cx, JSString *str, const jschar *reservedSet, jsval *rval) +{ + size_t length, start, k; + jschar *chars, C, H; + uint32 V; + jsuint B; + uint8 octets[6]; + JSString *R; + intN j, n; + + length = JSSTRING_LENGTH(str); + if (length == 0) { + *rval = STRING_TO_JSVAL(cx->runtime->emptyString); + return JS_TRUE; + } + + R = js_NewString(cx, NULL, 0, 0); + if (!R) + return JS_FALSE; + + chars = JSSTRING_CHARS(str); + for (k = 0; k < length; k++) { + C = chars[k]; + if (C == '%') { + start = k; + if ((k + 2) >= length) + goto bad; + if (!JS7_ISHEX(chars[k+1]) || !JS7_ISHEX(chars[k+2])) + goto bad; + B = JS7_UNHEX(chars[k+1]) * 16 + JS7_UNHEX(chars[k+2]); + k += 2; + if (!(B & 0x80)) { + C = (jschar)B; + } else { + n = 1; + while (B & (0x80 >> n)) + n++; + if (n == 1 || n > 6) + goto bad; + octets[0] = (uint8)B; + if (k + 3 * (n - 1) >= length) + goto bad; + for (j = 1; j < n; j++) { + k++; + if (chars[k] != '%') + goto bad; + if (!JS7_ISHEX(chars[k+1]) || !JS7_ISHEX(chars[k+2])) + goto bad; + B = JS7_UNHEX(chars[k+1]) * 16 + JS7_UNHEX(chars[k+2]); + if ((B & 0xC0) != 0x80) + goto bad; + k += 2; + octets[j] = (char)B; + } + V = Utf8ToOneUcs4Char(octets, n); + if (V >= 0x10000) { + V -= 0x10000; + if (V > 0xFFFFF) + goto bad; + C = (jschar)((V & 0x3FF) + 0xDC00); + H = (jschar)((V >> 10) + 0xD800); + if (!AddCharsToURI(cx, R, &H, 1)) + return JS_FALSE; + } else { + C = (jschar)V; + } + } + if (js_strchr(reservedSet, C)) { + if (!AddCharsToURI(cx, R, &chars[start], (k - start + 1))) + return JS_FALSE; + } else { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } + } else { + if (!AddCharsToURI(cx, R, &C, 1)) + return JS_FALSE; + } + } + + /* + * Shrinking realloc can fail (e.g., with a BSD-style allocator), but we + * don't worry about that case here. Worst case, R hangs onto URI_CHUNK-1 + * more jschars than it needs. + */ + chars = (jschar *) JS_realloc(cx, R->chars, (R->length+1) * sizeof(jschar)); + if (chars) + R->chars = chars; + *rval = STRING_TO_JSVAL(R); + return JS_TRUE; + +bad: + JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_URI); + return JS_FALSE; +} + +static JSBool +str_decodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Decode(cx, str, js_uriReservedPlusPound_ucstr, rval); +} + +static JSBool +str_decodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Decode(cx, str, js_empty_ucstr, rval); +} + +static JSBool +str_encodeURI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Encode(cx, str, js_uriReservedPlusPound_ucstr, js_uriUnescaped_ucstr, + rval); +} + +static JSBool +str_encodeURI_Component(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, + jsval *rval) +{ + JSString *str; + + str = js_ValueToString(cx, argv[0]); + if (!str) + return JS_FALSE; + argv[0] = STRING_TO_JSVAL(str); + return Encode(cx, str, js_uriUnescaped_ucstr, NULL, rval); +} + +/* + * Convert one UCS-4 char and write it into a UTF-8 buffer, which must be at + * least 6 bytes long. Return the number of UTF-8 bytes of data written. + */ +static int +OneUcs4ToUtf8Char(uint8 *utf8Buffer, uint32 ucs4Char) +{ + int utf8Length = 1; + + JS_ASSERT(ucs4Char <= 0x7FFFFFFF); + if (ucs4Char < 0x80) { + *utf8Buffer = (uint8)ucs4Char; + } else { + int i; + uint32 a = ucs4Char >> 11; + utf8Length = 2; + while (a) { + a >>= 5; + utf8Length++; + } + i = utf8Length; + while (--i) { + utf8Buffer[i] = (uint8)((ucs4Char & 0x3F) | 0x80); + ucs4Char >>= 6; + } + *utf8Buffer = (uint8)(0x100 - (1 << (8-utf8Length)) + ucs4Char); + } + return utf8Length; +} + +/* + * Convert a utf8 character sequence into a UCS-4 character and return that + * character. It is assumed that the caller already checked that the sequence + * is valid. + */ +static uint32 +Utf8ToOneUcs4Char(const uint8 *utf8Buffer, int utf8Length) +{ + uint32 ucs4Char; + uint32 minucs4Char; + /* from Unicode 3.1, non-shortest form is illegal */ + static const uint32 minucs4Table[] = { + 0x00000080, 0x00000800, 0x0001000, 0x0020000, 0x0400000 + }; + + JS_ASSERT(utf8Length >= 1 && utf8Length <= 6); + if (utf8Length == 1) { + ucs4Char = *utf8Buffer; + JS_ASSERT(!(ucs4Char & 0x80)); + } else { + JS_ASSERT((*utf8Buffer & (0x100 - (1 << (7-utf8Length)))) == + (0x100 - (1 << (8-utf8Length)))); + ucs4Char = *utf8Buffer++ & ((1<<(7-utf8Length))-1); + minucs4Char = minucs4Table[utf8Length-2]; + while (--utf8Length) { + JS_ASSERT((*utf8Buffer & 0xC0) == 0x80); + ucs4Char = ucs4Char<<6 | (*utf8Buffer++ & 0x3F); + } + if (ucs4Char < minucs4Char || + ucs4Char == 0xFFFE || ucs4Char == 0xFFFF) { + ucs4Char = 0xFFFD; + } + } + return ucs4Char; +}