1/* config.c: parsing of config files
  2 *
  3 * Copyright (C) 2006 Lars Hjemli
  4 *
  5 * Licensed under GNU General Public License v2
  6 *   (see COPYING for full license text)
  7 */
  8
  9#include "cgit.h"
 10
 11int next_char(FILE *f)
 12{
 13	int c = fgetc(f);
 14	if (c=='\r') {
 15		c = fgetc(f);
 16		if (c!='\n') {
 17			ungetc(c, f);
 18			c = '\r';
 19		}
 20	}
 21	return c;
 22}
 23
 24void skip_line(FILE *f)
 25{
 26	int c;
 27
 28	while((c=next_char(f)) && c!='\n' && c!=EOF)
 29		;
 30}
 31
 32int read_config_line(FILE *f, char *line, const char **value, int bufsize)
 33{
 34	int i = 0, isname = 0;
 35
 36	*value = NULL;
 37	while(i<bufsize-1) {
 38		int c = next_char(f);
 39		if (!isname && (c=='#' || c==';')) {
 40			skip_line(f);
 41			continue;
 42		}
 43		if (!isname && isspace(c))
 44			continue;
 45
 46		if (c=='=' && !*value) {
 47			line[i] = 0;
 48			*value = &line[i+1];
 49		} else if (c=='\n' && !isname) {
 50			i = 0;
 51			continue;
 52		} else if (c=='\n' || c==EOF) {
 53			line[i] = 0;
 54			break;
 55		} else {
 56			line[i]=c;
 57		}
 58		isname = 1;
 59		i++;
 60	}
 61	line[i+1] = 0;
 62	return i;
 63}
 64
 65int cgit_read_config(const char *filename, configfn fn)
 66{
 67	int ret = 0, len;
 68	char line[256];
 69	const char *value;
 70	FILE *f = fopen(filename, "r");
 71
 72	if (!f)
 73		return -1;
 74
 75	while((len = read_config_line(f, line, &value, sizeof(line))) > 0)
 76		(*fn)(line, value);
 77
 78	fclose(f);
 79	return ret;
 80}
 81
 82int cgit_parse_query(char *txt, configfn fn)
 83{
 84	char *t, *value = NULL, c;
 85
 86	if (!txt)
 87		return 0;
 88
 89	t = txt = xstrdup(txt);
 90 
 91	while((c=*t) != '\0') {
 92		if (c=='=') {
 93			*t = '\0';
 94			value = t+1;
 95		} else if (c=='&') {
 96			*t = '\0';
 97			(*fn)(txt, value);
 98			txt = t+1;
 99			value = NULL;
100		}
101		t++;
102	}
103	if (t!=txt)
104		(*fn)(txt, value);
105	return 0;
106}