configfile.c

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39Johan Herland <johan@herland.net> 2010-06-24 17:53:20 +0200
committer Lars Hjemli <hjemli@gmail.com> 2010-07-18 10:54:02 +0200
commit 72ef913514288bd2aae23509581097bfd3edf8c4 (patch)
tree 3a8b48aa0ebcc74a7e8b7f05f964432c6d577921 /cgitrc.5.txt
parent Add URL parameter 'ignorews' for optionally ignoring whitespace in diffs (diff)
download cgit-pink-72ef913514288bd2aae23509581097bfd3edf8c4.tar.gz
cgit-pink-72ef913514288bd2aae23509581097bfd3edf/* 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;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39Johan Herland <johan@herland.net>	2010-06-24 17:53:20 +0200
committer	Lars Hjemli <hjemli@gmail.com>	2010-07-18 10:54:02 +0200
commit	72ef913514288bd2aae23509581097bfd3edf8c4 (patch)
tree	3a8b48aa0ebcc74a7e8b7f05f964432c6d577921 /cgitrc.5.txt
parent	Add URL parameter 'ignorews' for optionally ignoring whitespace in diffs (diff)
download	cgit-pink-72ef913514288bd2aae23509581097bfd3edf8c4.tar.gz cgit-pink-72ef913514288bd2aae23509581097bfd3edf/* 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; }