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-rw-r--r--trunk/src/song.c353
1 files changed, 353 insertions, 0 deletions
diff --git a/trunk/src/song.c b/trunk/src/song.c
new file mode 100644
index 000000000..9bcb1a0b4
--- /dev/null
+++ b/trunk/src/song.c
@@ -0,0 +1,353 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "song.h"
+#include "ls.h"
+#include "directory.h"
+#include "utils.h"
+#include "tag.h"
+#include "log.h"
+#include "path.h"
+#include "playlist.h"
+#include "inputPlugin.h"
+#include "myfprintf.h"
+
+#define SONG_KEY "key: "
+#define SONG_MTIME "mtime: "
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+Song *newNullSong(void)
+{
+ Song *song = xmalloc(sizeof(Song));
+
+ song->tag = NULL;
+ song->url = NULL;
+ song->type = SONG_TYPE_FILE;
+ song->parentDir = NULL;
+
+ return song;
+}
+
+Song *newSong(char *url, int type, Directory * parentDir)
+{
+ Song *song = NULL;
+
+ if (strchr(url, '\n')) {
+ DEBUG("newSong: '%s' is not a valid uri\n", url);
+ return NULL;
+ }
+
+ song = newNullSong();
+
+ song->url = xstrdup(url);
+ song->type = type;
+ song->parentDir = parentDir;
+
+ assert(type == SONG_TYPE_URL || parentDir);
+
+ if (song->type == SONG_TYPE_FILE) {
+ InputPlugin *plugin;
+ unsigned int next = 0;
+ char *song_url = getSongUrl(song);
+ char *abs_path = rmp2amp(utf8ToFsCharset(song_url));
+ while (!song->tag && (plugin = isMusic(song_url,
+ &(song->mtime),
+ next++))) {
+ song->tag = plugin->tagDupFunc(abs_path);
+ }
+ if (!song->tag || song->tag->time < 0) {
+ freeSong(song);
+ song = NULL;
+ }
+ }
+
+ return song;
+}
+
+void freeSong(Song * song)
+{
+ deleteASongFromPlaylist(song);
+ freeJustSong(song);
+}
+
+void freeJustSong(Song * song)
+{
+ free(song->url);
+ if (song->tag)
+ freeMpdTag(song->tag);
+ free(song);
+ getSongUrl(NULL);
+}
+
+SongList *newSongList(void)
+{
+ return makeList((ListFreeDataFunc *) freeSong, 0);
+}
+
+Song *addSongToList(SongList * list, char *url, char *utf8path,
+ int songType, Directory * parentDirectory)
+{
+ Song *song = NULL;
+
+ switch (songType) {
+ case SONG_TYPE_FILE:
+ if (isMusic(utf8path, NULL, 0)) {
+ song = newSong(url, songType, parentDirectory);
+ }
+ break;
+ case SONG_TYPE_URL:
+ song = newSong(url, songType, parentDirectory);
+ break;
+ default:
+ DEBUG("addSongToList: Trying to add an invalid song type\n");
+ }
+
+ if (song == NULL)
+ return NULL;
+
+ insertInList(list, song->url, (void *)song);
+
+ return song;
+}
+
+void freeSongList(SongList * list)
+{
+ freeList(list);
+}
+
+void printSongUrl(int fd, Song * song)
+{
+ if (song->parentDir && song->parentDir->path) {
+ fdprintf(fd, "%s%s/%s\n", SONG_FILE,
+ getDirectoryPath(song->parentDir), song->url);
+ } else {
+ fdprintf(fd, "%s%s\n", SONG_FILE, song->url);
+ }
+}
+
+int printSongInfo(int fd, Song * song)
+{
+ printSongUrl(fd, song);
+
+ if (song->tag)
+ printMpdTag(fd, song->tag);
+
+ return 0;
+}
+
+int printSongInfoFromList(int fd, SongList * list)
+{
+ ListNode *tempNode = list->firstNode;
+
+ while (tempNode != NULL) {
+ printSongInfo(fd, (Song *) tempNode->data);
+ tempNode = tempNode->nextNode;
+ }
+
+ return 0;
+}
+
+void writeSongInfoFromList(FILE * fp, SongList * list)
+{
+ ListNode *tempNode = list->firstNode;
+
+ fprintf(fp, "%s\n", SONG_BEGIN);
+
+ while (tempNode != NULL) {
+ fprintf(fp, "%s%s\n", SONG_KEY, tempNode->key);
+ fflush(fp);
+ printSongInfo(fileno(fp), (Song *) tempNode->data);
+ fprintf(fp, "%s%li\n", SONG_MTIME,
+ (long)((Song *) tempNode->data)->mtime);
+ tempNode = tempNode->nextNode;
+ }
+
+ fprintf(fp, "%s\n", SONG_END);
+}
+
+static void insertSongIntoList(SongList * list, ListNode ** nextSongNode,
+ char *key, Song * song)
+{
+ ListNode *nodeTemp;
+ int cmpRet = 0;
+
+ while (*nextSongNode
+ && (cmpRet = strcmp(key, (*nextSongNode)->key)) > 0) {
+ nodeTemp = (*nextSongNode)->nextNode;
+ deleteNodeFromList(list, *nextSongNode);
+ *nextSongNode = nodeTemp;
+ }
+
+ if (!(*nextSongNode)) {
+ insertInList(list, song->url, (void *)song);
+ } else if (cmpRet == 0) {
+ Song *tempSong = (Song *) ((*nextSongNode)->data);
+ if (tempSong->mtime != song->mtime) {
+ freeMpdTag(tempSong->tag);
+ tempSong->tag = song->tag;
+ tempSong->mtime = song->mtime;
+ song->tag = NULL;
+ }
+ freeJustSong(song);
+ *nextSongNode = (*nextSongNode)->nextNode;
+ } else {
+ insertInListBeforeNode(list, *nextSongNode, -1, song->url,
+ (void *)song);
+ }
+}
+
+static int matchesAnMpdTagItemKey(char *buffer, int *itemType)
+{
+ int i;
+
+ for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) {
+ if (0 == strncmp(mpdTagItemKeys[i], buffer,
+ strlen(mpdTagItemKeys[i]))) {
+ *itemType = i;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void readSongInfoIntoList(FILE * fp, SongList * list, Directory * parentDir)
+{
+ char buffer[MAXPATHLEN + 1024];
+ int bufferSize = MAXPATHLEN + 1024;
+ Song *song = NULL;
+ ListNode *nextSongNode = list->firstNode;
+ ListNode *nodeTemp;
+ int itemType;
+
+ while (myFgets(buffer, bufferSize, fp) && 0 != strcmp(SONG_END, buffer)) {
+ if (0 == strncmp(SONG_KEY, buffer, strlen(SONG_KEY))) {
+ if (song) {
+ insertSongIntoList(list, &nextSongNode,
+ song->url, song);
+ song = NULL;
+ }
+
+ song = newNullSong();
+ song->url = xstrdup(buffer + strlen(SONG_KEY));
+ song->type = SONG_TYPE_FILE;
+ song->parentDir = parentDir;
+ } else if (0 == strncmp(SONG_FILE, buffer, strlen(SONG_FILE))) {
+ if (!song)
+ FATAL("Problems reading song info\n");
+ /* we don't need this info anymore
+ song->url = xstrdup(&(buffer[strlen(SONG_FILE)]));
+ */
+ } else if (matchesAnMpdTagItemKey(buffer, &itemType)) {
+ if (!song->tag)
+ song->tag = newMpdTag();
+ addItemToMpdTag(song->tag, itemType,
+ &(buffer
+ [strlen(mpdTagItemKeys[itemType]) +
+ 2]));
+ } else if (0 == strncmp(SONG_TIME, buffer, strlen(SONG_TIME))) {
+ if (!song->tag)
+ song->tag = newMpdTag();
+ song->tag->time = atoi(&(buffer[strlen(SONG_TIME)]));
+ } else if (0 == strncmp(SONG_MTIME, buffer, strlen(SONG_MTIME))) {
+ song->mtime = atoi(&(buffer[strlen(SONG_MTIME)]));
+ }
+ /* ignore empty lines (starting with '\0') */
+ else if (*buffer)
+ FATAL("songinfo: unknown line in db: %s\n", buffer);
+ }
+
+ if (song) {
+ insertSongIntoList(list, &nextSongNode, song->url, song);
+ song = NULL;
+ }
+
+ while (nextSongNode) {
+ nodeTemp = nextSongNode->nextNode;
+ deleteNodeFromList(list, nextSongNode);
+ nextSongNode = nodeTemp;
+ }
+}
+
+int updateSongInfo(Song * song)
+{
+ if (song->type == SONG_TYPE_FILE) {
+ InputPlugin *plugin;
+ unsigned int next = 0;
+ char *song_url = getSongUrl(song);
+ char *abs_path = rmp2amp(song_url);
+
+ if (song->tag)
+ freeMpdTag(song->tag);
+
+ song->tag = NULL;
+
+ while (!song->tag && (plugin = isMusic(song_url,
+ &(song->mtime),
+ next++))) {
+ song->tag = plugin->tagDupFunc(abs_path);
+ }
+ if (!song->tag || song->tag->time < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+/* pass song = NULL to reset, we do this freeJustSong(), so that if
+ * we free and recreate this memory we make sure to print it correctly*/
+char *getSongUrl(Song * song)
+{
+ static char *buffer;
+ static int bufferSize;
+ static Song *lastSong;
+ int slen;
+ int dlen;
+ int size;
+
+ if (!song) {
+ lastSong = song;
+ return NULL;
+ }
+
+ if (!song->parentDir || !song->parentDir->path)
+ return song->url;
+
+ /* be careful with this! */
+ if (song == lastSong)
+ return buffer;
+
+ slen = strlen(song->url);
+ dlen = strlen(getDirectoryPath(song->parentDir));
+
+ size = slen + dlen + 2;
+
+ if (size > bufferSize) {
+ buffer = xrealloc(buffer, size);
+ bufferSize = size;
+ }
+
+ strcpy(buffer, getDirectoryPath(song->parentDir));
+ buffer[dlen] = '/';
+ strcpy(buffer + dlen + 1, song->url);
+
+ return buffer;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:21:08 +0000