88 rindas
1.4 KiB
C
88 rindas
1.4 KiB
C
|
/* configfile.c: parsing of config files
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 Lars Hjemli
|
||
|
|
*
|
||
|
|
* Licensed under GNU General Public License v2
|
||
|
|
* (see COPYING for full license text)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <ctype.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include "configfile.h"
|
||
|
|
|
||
|
|
int next_char(FILE *f)
|
||
|
|
{
|
||
|
|
int c = fgetc(f);
|
||
|
|
if (c=='\r') {
|
||
|
|
c = fgetc(f);
|
||
|
|
if (c!='\n') {
|
||
|
|
ungetc(c, f);
|
||
|
|
c = '\r';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return c;
|
||
|
|
}
|
||
|
|
|
||
|
|
void skip_line(FILE *f)
|
||
|
|
{
|
||
|
|
int c;
|
||
|
|
|
||
|
|
while((c=next_char(f)) && c!='\n' && c!=EOF)
|
||
|
|
;
|
||
|
|
}
|
||
|
|
|
||
|
|
int read_config_line(FILE *f, char *line, const char **value, int bufsize)
|
||
|
|
{
|
||
|
|
int i = 0, isname = 0;
|
||
|
|
|
||
|
|
*value = NULL;
|
||
|
|
while(i<bufsize-1) {
|
||
|
|
int c = next_char(f);
|
||
|
|
if (!isname && (c=='#' || c==';')) {
|
||
|
|
skip_line(f);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (!isname && isspace(c))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (c=='=' && !*value) {
|
||
|
|
line[i] = 0;
|
||
|
|
*value = &line[i+1];
|
||
|
|
} else if (c=='\n' && !isname) {
|
||
|
|
i = 0;
|
||
|
|
continue;
|
||
|
|
} else if (c=='\n' || c==EOF) {
|
||
|
|
line[i] = 0;
|
||
|
|
break;
|
||
|
|
} else {
|
||
|
|
line[i]=c;
|
||
|
|
}
|
||
|
|
isname = 1;
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
line[i+1] = 0;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
int parse_configfile(const char *filename, configfile_value_fn fn)
|
||
|
|
{
|
||
|
|
static int nesting;
|
||
|
|
int len;
|
||
|
|
char line[256];
|
||
|
|
const char *value;
|
||
|
|
FILE *f;
|
||
|
|
|
||
|
|
/* cancel deeply nested include-commands */
|
||
|
|
if (nesting > 8)
|
||
|
|
return -1;
|
||
|
|
if (!(f = fopen(filename, "r")))
|
||
|
|
return -1;
|
||
|
|
nesting++;
|
||
|
|
while((len = read_config_line(f, line, &value, sizeof(line))) > 0)
|
||
|
|
fn(line, value);
|
||
|
|
nesting--;
|
||
|
|
fclose(f);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|