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/*================================================================
* check boolean string
*
* Copyright (C) 1996-1999 Takashi Iwai
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*================================================================*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "util.h"
/* search delimiers */
char *strschr(char *str, char *dels)
{
char *p;
for (p = str; *p; p++) {
if (strchr(dels, *p))
return p;
}
return NULL;
}
/* case insensitive comparison */
int strlcmp(char *ap, char *bp)
{
int a, b;
for (;;) {
a = tolower(*ap);
b = tolower(*bp);
if (a != b)
return (a - b);
if (a == 0)
return 0;
ap++;
bp++;
}
}
/* check boolean string; on, true, yes */
int bool_val(char *val)
{
if (strlcmp(val, "on") == 0 || strlcmp(val, "true") == 0 ||
strlcmp(val, "yes") == 0)
return 1;
else if (strlcmp(val, "off") == 0 || strlcmp(val, "false") == 0 ||
strlcmp(val, "no") == 0)
return 0;
else
return (int)strtol(val, NULL, 0);
}
/*================================================================
* get a token separated by space letters
* almost equal with strtok(str, spaces) but this checks quote
* letters.
*================================================================*/
#define DELIM " \t\n\r"
static void remove_letter(char *p)
{
if (! *p)
return;
for (;; p++) {
*p = p[1];
if (! *p) return;
}
}
char *strtoken(char *src)
{
static char *buf = NULL, *vptr;
char *retptr;
if (src) {
if (buf) free(buf);
buf = safe_strdup(src);
vptr = buf;
} else if (buf == NULL) {
fprintf(stderr, "illegal strtoken call\n");
exit(1);
}
/* skip delimiters at head */
while (*vptr && strchr(DELIM, *vptr))
vptr++;
if (!*vptr)
return NULL;
retptr = vptr;
while (*vptr && strchr(DELIM, *vptr) == NULL) {
if (*vptr == '\\') {
remove_letter(vptr);
if (!*vptr)
break;
vptr++;
} else if (*vptr == '"' || *vptr == '\'') {
int prev, quote;
prev = quote = *vptr;
remove_letter(vptr);
for (; *vptr; prev = *vptr, vptr++) {
if (*vptr == '\\') {
remove_letter(vptr);
if (*vptr)
break;
} else if (*vptr == quote) {
remove_letter(vptr);
break;
}
}
} else
vptr++;
}
if (*vptr)
*vptr++ = 0;
return retptr;
}
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