libg1m/src/parse/lang.c

/* ************************************************************************** */
/*                                       _____           _                    */
/*  parse/lang.c                        |_   _|__  _   _| |__   ___ _   _     */
/*  | Project: libg1m                     | |/ _ \| | | | '_ \ / _ \ | | |    */
/*                                        | | (_) | |_| | | | |  __/ |_| |    */
/*  By: thomas <thomas@touhey.fr>         |_|\___/ \__,_|_| |_|\___|\__, |.fr */
/*  Last updated: 2016/11/24 18:00:21                               |___/     */
/*                                                                            */
/* ************************************************************************** */
#include <libg1m/internals.h>

/**
 *	g1m_parse_lang:
 *	Parse fx language files.
 *
 *	@arg	handle		the libg1m handle.
 *	@arg	stream		the stream to parse from.
 *	@return				the error code (0 if ok).
 */

int g1m_parse_lang(g1m_t *handle, FILE *stream)
{
	(void)handle;
	(void)stream;
	log_info("Language type isn't managed yet.");
	return (0);
}

/**
 *	g1m_parse_lang_cg:
 *	Parse fx-CG language files.
 *
 *	@arg	handle		the libg1m handle.
 *	@arg	stream		the stream to parse from.
 *	@return				the error code (0 if ok).
 */

int g1m_parse_lang_cg(g1m_t *handle, FILE *stream)
{
	(void)handle;
	/* read the subheader */
	DREAD(hd, g3l_subheader)

	/* correct the endianness */
	hd.message_zone_size = be32toh(hd.message_zone_size);

	/* log */
	log_info("internal name is '%.8s'", hd.internal_name);
	log_info("language name is '%.16s'", hd.language_name);
	log_info("language salutation is '%.16s'", hd.language_salutation);
	log_info("version is '%.10s'", hd.version);
	log_info("datetime is '%.14s'", hd.datetime);
	log_info("g3l filename is '%.16s'", hd.g3l_filename);

	/* read the languages header */
	DREAD(lhd, g3l_lang_header)
	logm_info(&lhd, sizeof(struct g3l_lang_header));

	/* correct endianness */
	lhd.num = be32toh(lhd.num);

	/* log */
	log_info("there are %d messages", lhd.num);

	/* read the entire message zone */
	size_t message_zone_size = hd.message_zone_size
		- sizeof(struct g3l_lang_header);
	uint8_t message_zone[message_zone_size];
	READ(message_zone, message_zone_size)

	/* get parts */
	const uint_fast32_t num = lhd.num + 1;
	uint32_t *offsets = (uint32_t*)message_zone;
	uint8_t *messages = (uint8_t*)message_zone + num * sizeof(uint32_t);

	/* read messages */
	for (uint_fast32_t i = 0; i < num; i++) {
		/* check if offset is valid */
		if (offsets[i] == (uint32_t)-1) {
			log_info("[#%ld] -", i);
			continue ;
		}

		/* correct offset */
		offsets[i] = be32toh(offsets[i]);

		/* log */
		log_info("[#%ld] message: '%s'", i, &messages[offsets[i]]);
	}

	/* parse footer */
	DREAD(footer, g3l_footer)
	/* TODO: check the checksum */

	/* no error */
	return (0);
}