ossp-pkg/uuid/uuid++.cc
1.1
/*
** OSSP uuid - Universally Unique Identifier
** Copyright (c) 2004-2005 Ralf S. Engelschall <rse@engelschall.com>
** Copyright (c) 2004-2005 The OSSP Project <http://www.ossp.org/>
**
** This file is part of OSSP uuid, a library for the generation
** of UUIDs which can found at http://www.ossp.org/pkg/lib/uuid/
**
** Permission to use, copy, modify, and distribute this software for
** any purpose with or without fee is hereby granted, provided that
** the above copyright notice and this permission notice appear in all
** copies.
**
** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
**
** uuid++.cc: library C++ API implementation
*/
#include <string.h>
#include <stdarg.h>
#include "uuid++.hh"
using namespace std;
/*
** OBJECT CONSTRUCTORS AND DESTRUCTOR
*/
/* standard constructor */
uuid::uuid()
{
if (uuid_create(&ctx) != UUID_RC_OK)
throw "unable to create UUID context";
}
/* standard destructor */
uuid::~uuid()
{
uuid_destroy(ctx);
}
/* construction: import of other C++ API object (= special C++ copy constructor) */
uuid::uuid(const uuid &obj)
{
/* Notice: the copy constructor is the same as the assignment
operator (with the object as the RHS) below, except that (1) no
check for self-assignment is required, (2) no existing internals
have to be destroyed and (3) no return value is given back. */
if (uuid_clone(obj.ctx, &ctx) != UUID_RC_OK)
throw "unable to clone UUID context";
}
/* construction: import of other C API object */
uuid::uuid(uuid_t *obj)
{
if (obj != NULL)
ctx = obj;
else {
if (uuid_create(&ctx) != UUID_RC_OK)
throw "unable to create UUID context";
}
}
/* construction: import of binary representation */
uuid::uuid(const unsigned char *bin)
{
if (uuid_create(&ctx) != UUID_RC_OK)
throw "unable to create UUID context";
if (bin != NULL) {
if (uuid_import(ctx, UUID_FMT_BIN, bin, UUID_LEN_BIN) != UUID_RC_OK)
throw "unable to import UUID from binary representation";
}
}
/* construction: import of string representation */
uuid::uuid(const char *str)
{
if (uuid_create(&ctx) != UUID_RC_OK)
throw "unable to create UUID context";
if (str != NULL) {
if (uuid_import(ctx, UUID_FMT_STR, str, strlen(str)) != UUID_RC_OK)
throw "unable to import UUID from string representation";
}
}
/*
** IMPORT METHODS
*/
/* assignment: import of other C++ API object */
uuid &uuid::operator=(const uuid &rhs)
{
if (this == &rhs)
return *this;
if (uuid_destroy(ctx) != UUID_RC_OK)
throw "failed to destroy old UUID context";
if (uuid_clone(rhs.ctx, &ctx) != UUID_RC_OK)
throw "unable to clone UUID context";
return *this;
}
/* assignment: import of other C API object */
uuid &uuid::operator=(const uuid_t *rhs)
{
if (rhs == NULL)
throw "invalid RHS C object";
if (uuid_clone((uuid_t *)rhs, &ctx) != UUID_RC_OK)
throw "unable to clone UUID context";
return *this;
}
/* assignment: import of binary representation */
uuid &uuid::operator=(const unsigned char *rhs)
{
if (rhs == NULL)
throw "invalid RHS string";
if (uuid_import(ctx, UUID_FMT_BIN, (const void *)rhs, UUID_LEN_BIN) != UUID_RC_OK)
throw "unable to import into source UUID context";
return *this;
}
/* assignment: import of string representation */
uuid &uuid::operator=(const char *rhs)
{
if (rhs == NULL)
throw "invalid RHS string";
if (uuid_import(ctx, UUID_FMT_STR, (const void *)rhs, strlen(rhs)) != UUID_RC_OK)
throw "unable to import into source UUID context";
return *this;
}
/*
** GENERATION METHODS
*/
/* generation: loading existing UUID by name */
void uuid::load(const char *name)
{
if (name == NULL)
throw "invalid UUID name";
if (uuid_load(ctx, name) != UUID_RC_OK)
throw "unable to load UUID by name";
return;
}
/* generation: making new UUID one from scratch */
void uuid::make(unsigned int mode, ...)
{
uuid_rc_t rv;
va_list ap;
va_start(ap, mode);
if ((mode & UUID_MAKE_V3) || (mode & UUID_MAKE_V5)) {
const char *ns = (const char *)va_arg(ap, char *);
const char *name = (const char *)va_arg(ap, char *);
if (ns == NULL || name == NULL)
throw "invalid arguments";
rv = uuid_make(ctx, mode, ns, name);
}
else
rv = uuid_make(ctx, mode);
va_end(ap);
if (rv != UUID_RC_OK)
throw "unable to make new UUID";
return;
}
/*
** COMPARISON METHODS
*/
/* comparison: is-Nil-UUID */
int uuid::isnil(void)
{
int rv;
if (uuid_isnil(ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID for being Nil-UUID";
return rv;
}
/* comparison: equality */
int uuid::operator==(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv == 0);
}
/* comparison: inequality */
int uuid::operator!=(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv != 0);
}
/* comparison: lower-than */
int uuid::operator<(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv < 0);
}
/* comparison: lower-than-or-equal */
int uuid::operator<=(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv <= 0);
}
/* comparison: greater-than */
int uuid::operator>(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv > 0);
}
/* comparison: greater-than-or-equal */
int uuid::operator>=(const uuid &rhs)
{
int rv;
if (uuid_compare(ctx, rhs.ctx, &rv) != UUID_RC_OK)
throw "unable to compare UUID contexts";
return (rv >= 0);
}
/*
** EXPORT METHODS
*/
/* export: object representation */
uuid_t *uuid::object(void)
{
return ctx;
}
/* export: binary representation */
unsigned char *uuid::binary(void)
{
unsigned char *bin;
bin = NULL;
if (uuid_export(ctx, UUID_FMT_BIN, (void **)&bin, NULL) != UUID_RC_OK)
throw "unable to export UUID context";
return bin;
}
/* export: string representation */
char *uuid::string(void)
{
char *str;
str = NULL;
if (uuid_export(ctx, UUID_FMT_STR, (void **)&str, NULL) != UUID_RC_OK)
throw "unable to export UUID context";
return str;
}
