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/*
* Copyright (C) 2003-2009 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "song_save.h"
#include "song.h"
#include "tag_save.h"
#include "directory.h"
#include "tag.h"
#include "text_file.h"
#include <glib.h>
#include <stdlib.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "song"
#define SONG_KEY "key: "
#define SONG_MTIME "mtime: "
static GQuark
song_save_quark(void)
{
return g_quark_from_static_string("song_save");
}
static void
song_save_uri(FILE *fp, struct song *song)
{
if (song->parent != NULL && song->parent->path != NULL)
fprintf(fp, SONG_FILE "%s/%s\n",
directory_get_path(song->parent), song->uri);
else
fprintf(fp, SONG_FILE "%s\n", song->uri);
}
static int
song_save(struct song *song, void *data)
{
FILE *fp = data;
fprintf(fp, SONG_KEY "%s\n", song->uri);
song_save_uri(fp, song);
if (song->tag != NULL)
tag_save(fp, song->tag);
fprintf(fp, SONG_MTIME "%li\n", (long)song->mtime);
return 0;
}
void songvec_save(FILE *fp, struct songvec *sv)
{
fprintf(fp, "%s\n", SONG_BEGIN);
songvec_for_each(sv, song_save, fp);
fprintf(fp, "%s\n", SONG_END);
}
static void
commit_song(struct songvec *sv, struct song *newsong)
{
struct song *existing = songvec_find(sv, newsong->uri);
if (!existing) {
songvec_add(sv, newsong);
if (newsong->tag)
tag_end_add(newsong->tag);
} else { /* prevent dupes, just update the existing song info */
if (existing->mtime != newsong->mtime) {
if (existing->tag != NULL)
tag_free(existing->tag);
if (newsong->tag)
tag_end_add(newsong->tag);
existing->tag = newsong->tag;
existing->mtime = newsong->mtime;
newsong->tag = NULL;
}
song_free(newsong);
}
}
static char *
parse_tag_value(char *buffer, enum tag_type *type_r)
{
int i;
for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
size_t len = strlen(tag_item_names[i]);
if (0 == strncmp(tag_item_names[i], buffer, len) &&
buffer[len] == ':') {
*type_r = i;
return g_strchug(buffer + len + 1);
}
}
return NULL;
}
bool
songvec_load(FILE *fp, struct songvec *sv, struct directory *parent,
GString *buffer, GError **error_r)
{
char *line;
struct song *song = NULL;
enum tag_type type;
const char *value;
while ((line = read_text_line(fp, buffer)) != NULL &&
!g_str_has_prefix(line, SONG_END)) {
if (0 == strncmp(SONG_KEY, line, strlen(SONG_KEY))) {
if (song)
commit_song(sv, song);
song = song_file_new(line + strlen(SONG_KEY),
parent);
} else if (*line == 0) {
/* ignore empty lines (starting with '\0') */
} else if (song == NULL) {
g_set_error(error_r, song_save_quark(), 0,
"Problems reading song info");
return false;
} else if (0 == strncmp(SONG_FILE, line, strlen(SONG_FILE))) {
/* we don't need this info anymore */
} else if ((value = parse_tag_value(line,
&type)) != NULL) {
if (!song->tag) {
song->tag = tag_new();
tag_begin_add(song->tag);
}
tag_add_item(song->tag, type, value);
} else if (0 == strncmp(SONG_TIME, line, strlen(SONG_TIME))) {
if (!song->tag) {
song->tag = tag_new();
tag_begin_add(song->tag);
}
song->tag->time = atoi(&(line[strlen(SONG_TIME)]));
} else if (0 == strncmp(SONG_MTIME, line, strlen(SONG_MTIME))) {
song->mtime = atoi(&(line[strlen(SONG_MTIME)]));
} else {
g_set_error(error_r, song_save_quark(), 0,
"unknown line in db: %s", line);
return false;
}
}
if (song)
commit_song(sv, song);
return true;
}
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