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/* 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 
class="p">{ 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; }