102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*
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* Copyright (C) 2007 Kim Woelders
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies of the Software, its documentation and marketing & publicity
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* materials, and acknowledgment shall be given in the documentation, materials
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* and software packages that this Software was used.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include "parse.h"
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int
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parse(char *buf, const char *fmt, ...)
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{
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int nitems;
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char chi, chf, chq;
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char *p, **ps;
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va_list args;
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va_start(args, fmt);
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for (nitems = 0;;)
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{
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chf = *fmt++;
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if (chf != '%')
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break;
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chf = *fmt++;
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if (chf == '\0')
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break;
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/* Strip leading whitespace */
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while (isspace(*buf))
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buf++;
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if (!*buf)
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break;
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switch (chf)
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{
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case 'S': /* Return pointer to string */
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case 'T': /* As S, convert "NULL" to NULL pointer */
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chi = *buf;
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chq = (chi == '\'' || chi == '"') ? chi : '\0';
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if (chq)
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{
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/* Token is quoted */
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buf++;
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for (p = buf;; p++)
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{
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p = strchr(p, chq);
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if (p)
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{
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if (p[1] && !isspace(p[1]))
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continue;
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*p++ = '\0'; /* Terminate at quote */
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}
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else
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{
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p = buf + strlen(buf); /* Missing end quote */
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}
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break;
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}
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}
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else
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{
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/* Token is unquoted */
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p = buf + 1;
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while (*p && !isspace(*p))
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p++;
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if (*p)
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*p++ = '\0';
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}
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ps = va_arg(args, char **);
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if (chf == 'T' && (!buf[0] || !strcmp(buf, "NULL")))
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*ps = NULL;
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else
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*ps = buf;
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nitems++;
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buf = p;
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}
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}
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va_end(args);
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return nitems;
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}
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