A f*cking simple, error prone, and slow key-value-based file configuration reader

fsconf.h

#ifndef __FSCONF_H__
#define __FSCONF_H__


/* A f*cking simple, error prone, and slow key-value-based file configuration
 *
 * File name: file.fsconf
 * ------------------------
 * key0(value)\n
 * key1(value)\n
 * ------------------------
 * 
 * Example:
 * ------------------------
 * mailbox_dir(mailbox)\n
 * smtp_host_port(127.0.0.1:9002)\n
 * pop3_host_port(127.0.0.1:9003)\n
 * mysql_host_port(127.0.0.1:9004)\n
 * ------------------------
 * NOTE: '\n' is a must!
 */

#include <stddef.h>
#include <string.h>


static const char *
fsconf_get(char dest[], size_t size, const char src[], const char key[])
{
	const char *start = strstr(src, key);
	if (start == NULL)
		return NULL;

	start += strlen(key);
	if (*start != '(')
		return NULL;

	/* skips '(' */
	start++;

	const char *end = strstr(start, ")\n");
	if (end == NULL)
		return NULL;

	const size_t val_len = end - start;
	if (val_len >= size)
		return NULL;

	memcpy(dest, start, val_len);
	dest[val_len] = '\0';
	return dest;
}


#endif /* __FSCONF_H__ */