ossp-pkg/iselect/iselect_main.c
1.4
/* _ ____ _ _
** (_) ___| ___| | ___ ___| |_
** / /\___ \ / _ \ |/ _ \/ __| __|
** / / ___) | __/ | __/ (__| |_
** (_( |____/ \___|_|\___|\___|\__|
**
** iSelect -- Interactive Selection Tool
**
** iSelect is a Curses-based tool for interactive line selection
** in an ASCII file via a full-screen terminal session.
**
** ======================================================================
**
** Copyright (c) 1997-2007 Ralf S. Engelschall.
**
** This program is free software; it may be redistributed and/or
** modified only under the terms of the GNU General Public License,
** which may be found in the iSelect source distribution.
** Look at the file COPYING for details.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
** See the the GNU General Public License for more details.
**
** ======================================================================
**
** iselect_main.c -- main program
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "iselect_global.h"
#include "iselect_getopt.h"
#include "iselect_browse.h"
#include "iselect_keys.h"
#define _ISELECT_VERSION_C_AS_HEADER_
#include "iselect_version.c"
#undef _ISELECT_VERSION_C_AS_HEADER_
void give_version(char *name);
void give_usage(char *name);
void give_version(char *name)
{
fprintf(stderr, "%s\n", iselect_version.v_tex);
fprintf(stdout, "Copyright (c) 1997-2000 Ralf S. Engelschall <rse@engelschall.com>\n");
fprintf(stdout, "\n");
fprintf(stdout, "This program is distributed in the hope that it will be useful,\n");
fprintf(stdout, "but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
fprintf(stdout, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
fprintf(stdout, "GNU General Public License for more details.\n");
fprintf(stdout, "\n");
}
void give_usage(char *name)
{
fprintf(stderr, "Usage: %s [options] [line1 line2 ...]\n", name);
fprintf(stderr, "\n");
fprintf(stderr, " Input Options:\n");
fprintf(stderr, " -d, --delimiter=STR,STR selection tag delimiters\n");
fprintf(stderr, " -c, --strip-comments strip sharp-comments in input buffer\n");
fprintf(stderr, " -f, --force-browse browse even if input has 0 or only 1 line\n");
fprintf(stderr, " -a, --all-select force all lines to be selectable\n");
fprintf(stderr, " -e, --exit-no-select exit immediately if no lines are selectable\n");
fprintf(stderr, "\n");
fprintf(stderr, " Display Options:\n");
fprintf(stderr, " -p, --position=NUM initial line position of cursor\n");
fprintf(stderr, " -k, --key=KEY[:OKEY] enable an additional input key\n");
fprintf(stderr, " -m, --multi-line allow multiple lines to be selected\n");
fprintf(stderr, " -n, --name=STR program name shown flush-left on status bar\n");
fprintf(stderr, " -t, --title=STR title string shown centered on status bar\n");
fprintf(stderr, "\n");
fprintf(stderr, " Output Options:\n");
fprintf(stderr, " -S, --strip-result strip whitespaces in result string\n");
fprintf(stderr, " -P, --position-result prefix result string with `N:' (N=line number)\n");
fprintf(stderr, " -K, --key-result prefix result string with `K:' (K=select key)\n");
fprintf(stderr, " -Q, --quit-result=STR result string on quit (default='')\n");
fprintf(stderr, "\n");
fprintf(stderr, " Giving Feedback:\n");
fprintf(stderr, " -V, --version display version string\n");
fprintf(stderr, " -h, --help display this page\n");
fprintf(stderr, "\n");
}
struct option options[] = {
{ "strip-comments", FALSE, NULL, 'c' },
{ "force-browse", FALSE, NULL, 'f' },
{ "all-select", FALSE, NULL, 'a' },
{ "exit-no-select", FALSE, NULL, 'e' },
{ "position", TRUE, NULL, 'p' },
{ "key", TRUE, NULL, 'k' },
{ "multi-line", FALSE, NULL, 'm' },
{ "name", TRUE, NULL, 'n' },
{ "title", TRUE, NULL, 't' },
{ "strip-result", FALSE, NULL, 'S' },
{ "position-result", FALSE, NULL, 'P' },
{ "key-result", FALSE, NULL, 'K' },
{ "quit-result", TRUE, NULL, 'Q' },
{ "version", FALSE, NULL, 'V' },
{ "help", FALSE, NULL, 'h' },
{ NULL, FALSE, NULL, '\0' },
};
char caBuf[MAXBUF];
int main(int argc, char **argv)
{
int fpStdout;
int fpStdin;
char *cp;
char c;
int pos = -1;
char *progname;
int nBuf, p;
char ca[1024];
char *title = "";
char *name = "iSelect";
int stripco = FALSE;
int stripws = FALSE;
int resultline = FALSE;
int keyresultline = FALSE;
int browsealways = FALSE;
int allselectable = FALSE;
int multiselect = FALSE;
int exitnoselect = FALSE;
int i;
char *keystr;
char *abortstr = NULL;
char *tagbegin = "<";
char *tagend = ">";
/*
* argument handling
*/
/* canonicalize program name */
if ((cp = strrchr(argv[0], '/')) != NULL)
progname = cp+1;
else
progname = argv[0];
argv[0] = progname;
/* parse the option arguments */
opterr = 0;
while ((c = getopt_long(argc, argv, "d:cfaep:k:mn:t:SPKQ:Vh", options, NULL)) != (char)(-1)) {
if (optarg == NULL)
optarg = "(null)";
switch (c) {
case 'd':
tagbegin = strdup(optarg);
if ((cp = strchr(tagbegin, ',')) == NULL) {
fprintf(stderr, "iSelect: bad argument to option '%c'\n", optopt);
fprintf(stderr, "Try `%s --help' for more information.\n", progname);
exit(EX_USAGE);
}
*cp++ = NUL;
tagend = cp;
break;
case 'c':
stripco = TRUE;
break;
case 'f':
browsealways = TRUE;
break;
case 'a':
allselectable = TRUE;
break;
case 'e':
exitnoselect = TRUE;
break;
case 'p':
pos = atoi(optarg);
break;
case 'k':
configure_custom_key(optarg);
break;
case 'm':
multiselect = TRUE;
break;
case 'n':
name = strdup(optarg);
break;
case 't':
title = strdup(optarg);
break;
case 'S':
stripws = TRUE;
break;
case 'P':
resultline = TRUE;
break;
case 'K':
keyresultline = TRUE;
break;
case 'Q':
abortstr = strdup(optarg);
break;
case 'V':
give_version(progname);
exit(EX_OK);
case 'h':
give_usage(progname);
exit(EX_OK);
case '?':
fprintf(stderr, "iSelect: invalid option: '%c'\n", optopt);
fprintf(stderr, "Try `%s --help' for more information.\n", progname);
exit(EX_USAGE);
case ':':
fprintf(stderr, "iSelect: missing argument to option '%c'\n", optopt);
fprintf(stderr, "Try `%s --help' for more information.\n", progname);
exit(EX_USAGE);
}
}
/*
* read input
*/
if (optind < argc) {
/* browsing text is given as arguments */
nBuf = 0;
for (; optind < argc; ++optind) {
cp = (argv[optind] == NULL ? "" : argv[optind]);
sprintf(caBuf+nBuf, "%s\n", cp);
nBuf += strlen(cp)+1;
}
caBuf[nBuf++] = NUL;
}
else if (optind == argc && !feof(stdin)) {
/* browsing text is given on stdin */
nBuf = 0;
while ((c = fgetc(stdin)) != (char)(EOF)) {
caBuf[nBuf++] = c;
}
caBuf[nBuf++] = NUL;
/* save stdin filehandle and reconnect it to tty */
fpStdin = dup(0);
close(0);
open("/dev/tty", O_RDONLY);
}
else {
give_usage(progname);
exit(EX_USAGE);
}
/*
* preserve stdout filehandle for result string, i.e.
* use the terminal directly for output
*/
fpStdout = dup(1);
close(1);
open("/dev/tty", O_RDWR);
pos = (pos < 1 ? 1 : pos);
p = iSelect(caBuf, pos-1, title, name,
tagbegin, tagend, stripco, stripws,
browsealways, allselectable, multiselect, exitnoselect, &keystr);
/*
* give back the result string to the user via
* the stdout file handle
*/
if (p != -1) {
for (i = 0; i < nLines; i++) {
if (spaLines[i]->fSelected) {
if (resultline) {
sprintf(ca, "%d:", i+1);
write(fpStdout, ca, strlen(ca));
}
if (keyresultline) {
sprintf(ca, "%s:", keystr);
write(fpStdout, ca, strlen(ca));
}
write(fpStdout, spaLines[i]->cpResult, strlen(spaLines[i]->cpResult));
sprintf(ca, "\n");
write(fpStdout, ca, strlen(ca));
}
}
}
else {
if (abortstr != NULL)
write(fpStdout, abortstr, strlen(abortstr));
}
exit(0);
}
/*EOF*/
