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-rw-r--r--src/stored_playlist.c340
1 files changed, 340 insertions, 0 deletions
diff --git a/src/stored_playlist.c b/src/stored_playlist.c
new file mode 100644
index 000000000..73362cae1
--- /dev/null
+++ b/src/stored_playlist.c
@@ -0,0 +1,340 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 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 "stored_playlist.h"
+#include "playlist_save.h"
+#include "song.h"
+#include "mapper.h"
+#include "path.h"
+#include "utils.h"
+#include "ls.h"
+#include "database.h"
+#include "idle.h"
+#include "os_compat.h"
+
+static ListNode *nodeOfStoredPlaylist(List *list, int idx)
+{
+ int forward;
+ ListNode *node;
+ int i;
+
+ if (idx >= list->numberOfNodes || idx < 0)
+ return NULL;
+
+ if (idx > (list->numberOfNodes/2)) {
+ forward = 0;
+ node = list->lastNode;
+ i = list->numberOfNodes - 1;
+ } else {
+ forward = 1;
+ node = list->firstNode;
+ i = 0;
+ }
+
+ while (node != NULL) {
+ if (i == idx)
+ return node;
+
+ if (forward) {
+ i++;
+ node = node->nextNode;
+ } else {
+ i--;
+ node = node->prevNode;
+ }
+ }
+
+ return NULL;
+}
+
+static enum playlist_result
+writeStoredPlaylistToPath(List *list, const char *utf8path)
+{
+ ListNode *node;
+ FILE *file;
+ char path_max_tmp[MPD_PATH_MAX];
+
+ assert(utf8path != NULL);
+
+ utf8_to_fs_playlist_path(path_max_tmp, utf8path);
+
+ while (!(file = fopen(path_max_tmp, "w")) && errno == EINTR);
+ if (file == NULL)
+ return PLAYLIST_RESULT_ERRNO;
+
+ node = list->firstNode;
+ while (node != NULL) {
+ playlist_print_uri(file, (const char *)node->data);
+ node = node->nextNode;
+ }
+
+ while (fclose(file) != 0 && errno == EINTR);
+ return PLAYLIST_RESULT_SUCCESS;
+}
+
+List *loadStoredPlaylist(const char *utf8path)
+{
+ List *list;
+ FILE *file;
+ char buffer[MPD_PATH_MAX];
+ char path_max_tmp[MPD_PATH_MAX];
+
+ if (!is_valid_playlist_name(utf8path))
+ return NULL;
+
+ utf8_to_fs_playlist_path(path_max_tmp, utf8path);
+ while (!(file = fopen(path_max_tmp, "r")) && errno == EINTR);
+ if (file == NULL)
+ return NULL;
+
+ list = makeList(DEFAULT_FREE_DATA_FUNC, 0);
+
+ while (myFgets(buffer, sizeof(buffer), file)) {
+ char *s = buffer;
+ const char *path_utf8;
+
+ if (*s == PLAYLIST_COMMENT)
+ continue;
+
+ if (isValidRemoteUtf8Url(s))
+ insertInListWithoutKey(list, xstrdup(s));
+ else {
+ struct song *song;
+
+ path_utf8 = map_fs_to_utf8(s, path_max_tmp);
+ if (path_utf8 == NULL)
+ continue;
+
+ song = db_get_song(path_utf8);
+ if (song == NULL)
+ continue;
+
+ song_get_url(song, path_max_tmp);
+ insertInListWithoutKey(list, xstrdup(path_max_tmp));
+ }
+
+ if (list->numberOfNodes >= playlist_max_length)
+ break;
+ }
+
+ while (fclose(file) && errno == EINTR);
+ return list;
+}
+
+static int moveSongInStoredPlaylist(List *list, int src, int dest)
+{
+ ListNode *srcNode, *destNode;
+
+ if (src >= list->numberOfNodes || dest >= list->numberOfNodes ||
+ src < 0 || dest < 0 || src == dest)
+ return -1;
+
+ srcNode = nodeOfStoredPlaylist(list, src);
+ if (!srcNode)
+ return -1;
+
+ destNode = nodeOfStoredPlaylist(list, dest);
+
+ /* remove src */
+ if (srcNode->prevNode)
+ srcNode->prevNode->nextNode = srcNode->nextNode;
+ else
+ list->firstNode = srcNode->nextNode;
+
+ if (srcNode->nextNode)
+ srcNode->nextNode->prevNode = srcNode->prevNode;
+ else
+ list->lastNode = srcNode->prevNode;
+
+ /* this is all a bit complicated - but I tried to
+ * maintain the same order stuff is moved as in the
+ * real playlist */
+ if (dest == 0) {
+ list->firstNode->prevNode = srcNode;
+ srcNode->nextNode = list->firstNode;
+ srcNode->prevNode = NULL;
+ list->firstNode = srcNode;
+ } else if ((dest + 1) == list->numberOfNodes) {
+ list->lastNode->nextNode = srcNode;
+ srcNode->nextNode = NULL;
+ srcNode->prevNode = list->lastNode;
+ list->lastNode = srcNode;
+ } else {
+ if (destNode == NULL) {
+ /* this shouldn't be happening. */
+ return -1;
+ }
+
+ if (src > dest) {
+ destNode->prevNode->nextNode = srcNode;
+ srcNode->prevNode = destNode->prevNode;
+ srcNode->nextNode = destNode;
+ destNode->prevNode = srcNode;
+ } else {
+ destNode->nextNode->prevNode = srcNode;
+ srcNode->prevNode = destNode;
+ srcNode->nextNode = destNode->nextNode;
+ destNode->nextNode = srcNode;
+ }
+ }
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return 0;
+}
+
+enum playlist_result
+moveSongInStoredPlaylistByPath(const char *utf8path, int src, int dest)
+{
+ List *list;
+ enum playlist_result result;
+
+ if (!(list = loadStoredPlaylist(utf8path)))
+ return PLAYLIST_RESULT_NO_SUCH_LIST;
+
+ if (moveSongInStoredPlaylist(list, src, dest) != 0) {
+ freeList(list);
+ return PLAYLIST_RESULT_BAD_RANGE;
+ }
+
+ result = writeStoredPlaylistToPath(list, utf8path);
+
+ freeList(list);
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return result;
+}
+
+enum playlist_result
+removeAllFromStoredPlaylistByPath(const char *utf8path)
+{
+ char filename[MPD_PATH_MAX];
+ FILE *file;
+
+ if (!is_valid_playlist_name(utf8path))
+ return PLAYLIST_RESULT_BAD_NAME;
+
+ utf8_to_fs_playlist_path(filename, utf8path);
+
+ while (!(file = fopen(filename, "w")) && errno == EINTR);
+ if (file == NULL)
+ return PLAYLIST_RESULT_ERRNO;
+
+ while (fclose(file) != 0 && errno == EINTR);
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return PLAYLIST_RESULT_SUCCESS;
+}
+
+static int removeOneSongFromStoredPlaylist(List *list, int pos)
+{
+ ListNode *node = nodeOfStoredPlaylist(list, pos);
+ if (!node)
+ return -1;
+
+ deleteNodeFromList(list, node);
+
+ return 0;
+}
+
+enum playlist_result
+removeOneSongFromStoredPlaylistByPath(const char *utf8path, int pos)
+{
+ List *list;
+ enum playlist_result result;
+
+ if (!(list = loadStoredPlaylist(utf8path)))
+ return PLAYLIST_RESULT_NO_SUCH_LIST;
+
+ if (removeOneSongFromStoredPlaylist(list, pos) != 0) {
+ freeList(list);
+ return PLAYLIST_RESULT_BAD_RANGE;
+ }
+
+ result = writeStoredPlaylistToPath(list, utf8path);
+
+ freeList(list);
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return result;
+}
+
+enum playlist_result
+appendSongToStoredPlaylistByPath(const char *utf8path, struct song *song)
+{
+ FILE *file;
+ struct stat st;
+ char path_max_tmp[MPD_PATH_MAX];
+
+ if (!is_valid_playlist_name(utf8path))
+ return PLAYLIST_RESULT_BAD_NAME;
+ utf8_to_fs_playlist_path(path_max_tmp, utf8path);
+
+ while (!(file = fopen(path_max_tmp, "a")) && errno == EINTR);
+ if (file == NULL) {
+ int save_errno = errno;
+ while (fclose(file) != 0 && errno == EINTR);
+ errno = save_errno;
+ return PLAYLIST_RESULT_ERRNO;
+ }
+
+ if (fstat(fileno(file), &st) < 0) {
+ int save_errno = errno;
+ while (fclose(file) != 0 && errno == EINTR);
+ errno = save_errno;
+ return PLAYLIST_RESULT_ERRNO;
+ }
+
+ if (st.st_size >= ((MPD_PATH_MAX+1) * playlist_max_length)) {
+ while (fclose(file) != 0 && errno == EINTR);
+ return PLAYLIST_RESULT_TOO_LARGE;
+ }
+
+ playlist_print_song(file, song);
+
+ while (fclose(file) != 0 && errno == EINTR);
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return PLAYLIST_RESULT_SUCCESS;
+}
+
+enum playlist_result
+renameStoredPlaylist(const char *utf8from, const char *utf8to)
+{
+ struct stat st;
+ char from[MPD_PATH_MAX];
+ char to[MPD_PATH_MAX];
+
+ if (!is_valid_playlist_name(utf8from) ||
+ !is_valid_playlist_name(utf8to))
+ return PLAYLIST_RESULT_BAD_NAME;
+
+ utf8_to_fs_playlist_path(from, utf8from);
+ utf8_to_fs_playlist_path(to, utf8to);
+
+ if (stat(from, &st) != 0)
+ return PLAYLIST_RESULT_NO_SUCH_LIST;
+
+ if (stat(to, &st) == 0)
+ return PLAYLIST_RESULT_LIST_EXISTS;
+
+ if (rename(from, to) < 0)
+ return PLAYLIST_RESULT_ERRNO;
+
+ idle_add(IDLE_STORED_PLAYLIST);
+ return PLAYLIST_RESULT_SUCCESS;
+}
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