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/* config.c: Config file reader.
*
* Copyright 1999 D. Jeff Dionne, <jeff@rt-control.com>
*
* This is free software, under the LGPL V2.0
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <cfgfile.h>
/* This is a quick and dirty config file parser. It reads the file once for
* each request, there is no cache. Each line must be less than 128bytes.
*/
static char *args[16];
static char cfgbuf[128];
static char *ws(char **buf)
{
char *b = *buf;
char *p;
/* eat ws */
while (*b && (*b == ' ' || *b == '\n' || *b == '\t'))
b++;
p = b;
/* find the end */
while (*p && !(*p == ' ' || *p == '\n' || *p == '\t'))
p++;
*p = 0;
*buf = p + 1;
return b;
}
char **cfgread(FILE * fp)
{
char *ebuf;
char *p;
int i;
if (!fp) {
errno = EIO;
return (void *) 0;
}
while (fgets(cfgbuf, sizeof(cfgbuf), fp)) {
/* ship comment lines */
if (cfgbuf[0] == '#')
continue;
ebuf = cfgbuf + strlen(cfgbuf);
p = cfgbuf;
for (i = 0; i < 16 && p < ebuf; i++) {
args[i] = ws(&p);
}
args[i] = (void *) 0;
/* return if we found something */
if (strlen(args[0]))
return args;
}
return (void *) 0;
}
char **cfgfind(FILE * fp, char *var)
{
char **ret;
char search[80];
if (!fp || !var) {
errno = EIO;
return (void *) 0;
}
strncpy(search, var, sizeof(search));
fseek(fp, 0, SEEK_SET);
while ((ret = cfgread(fp))) {
if (!strcmp(ret[0], search))
return ret;
}
return (void *) 0;
}
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