aboutsummaryrefslogtreecommitdiffstats
path: root/trunk/src/storedPlaylist.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/storedPlaylist.c')
-rw-r--r--trunk/src/storedPlaylist.c501
1 files changed, 501 insertions, 0 deletions
diff --git a/trunk/src/storedPlaylist.c b/trunk/src/storedPlaylist.c
new file mode 100644
index 000000000..322cb1b5b
--- /dev/null
+++ b/trunk/src/storedPlaylist.c
@@ -0,0 +1,501 @@
+/* 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 "storedPlaylist.h"
+#include "log.h"
+#include "path.h"
+#include "utils.h"
+#include "playlist.h"
+#include "ack.h"
+#include "command.h"
+#include "ls.h"
+#include "directory.h"
+
+#include <string.h>
+#include <errno.h>
+
+static char *utf8pathToFsPathInStoredPlaylist(const char *utf8path, int fd)
+{
+ char *file;
+ char *rfile;
+ char *actualFile;
+
+ if (strstr(utf8path, "/")) {
+ commandError(fd, ACK_ERROR_ARG, "playlist name \"%s\" is "
+ "invalid: playlist names may not contain slashes",
+ utf8path);
+ return NULL;
+ }
+
+ file = utf8ToFsCharset((char *)utf8path);
+
+ rfile = xmalloc(strlen(file) + strlen(".") +
+ strlen(PLAYLIST_FILE_SUFFIX) + 1);
+
+ strcpy(rfile, file);
+ strcat(rfile, ".");
+ strcat(rfile, PLAYLIST_FILE_SUFFIX);
+
+ actualFile = rpp2app(rfile);
+
+ free(rfile);
+
+ return actualFile;
+}
+
+static unsigned int lengthOfStoredPlaylist(StoredPlaylist *sp)
+{
+ return sp->list->numberOfNodes;
+}
+
+static ListNode *nodeOfStoredPlaylist(StoredPlaylist *sp, int index)
+{
+ int forward;
+ ListNode *node;
+ int i;
+
+ if (index >= lengthOfStoredPlaylist(sp) || index < 0)
+ return NULL;
+
+ if (index > lengthOfStoredPlaylist(sp)/2) {
+ forward = 0;
+ node = sp->list->lastNode;
+ i = lengthOfStoredPlaylist(sp) - 1;
+ } else {
+ forward = 1;
+ node = sp->list->firstNode;
+ i = 0;
+ }
+
+ while (node != NULL) {
+ if (i == index)
+ return node;
+
+ if (forward) {
+ i++;
+ node = node->nextNode;
+ } else {
+ i--;
+ node = node->prevNode;
+ }
+ }
+
+ return NULL;
+}
+
+static void appendSongToStoredPlaylist(StoredPlaylist *sp, Song *song)
+{
+ insertInListWithoutKey(sp->list, xstrdup(getSongUrl(song)));
+}
+
+StoredPlaylist *newStoredPlaylist(const char *utf8name, int fd, int ignoreExisting)
+{
+ struct stat buf;
+ char *filename = NULL;
+ StoredPlaylist *sp = calloc(1, sizeof(*sp));
+ if (!sp)
+ return NULL;
+
+ if (utf8name) {
+ filename = utf8pathToFsPathInStoredPlaylist(utf8name, fd);
+
+ if (filename && stat(filename, &buf) == 0 &&
+ ignoreExisting == 0) {
+ commandError(fd, ACK_ERROR_EXIST,
+ "a file or directory already exists with "
+ "the name \"%s\"", utf8name);
+ free(sp);
+ return NULL;
+ }
+ }
+
+ sp->list = makeList(DEFAULT_FREE_DATA_FUNC, 0);
+ sp->fd = fd;
+
+ if (filename)
+ sp->fspath = xstrdup(filename);
+
+ return sp;
+}
+
+StoredPlaylist *loadStoredPlaylist(const char *utf8path, int fd)
+{
+ char *filename;
+ StoredPlaylist *sp;
+ FILE *file;
+ char s[MAXPATHLEN + 1];
+ int slength = 0;
+ char *temp = utf8ToFsCharset((char *)utf8path);
+ char *parent = parentPath(temp);
+ int parentlen = strlen(parent);
+ int tempInt;
+ int commentCharFound = 0;
+ Song *song;
+
+ filename = utf8pathToFsPathInStoredPlaylist(utf8path, fd);
+ if (!filename)
+ return NULL;
+
+ while (!(file = fopen(filename, "r")) && errno == EINTR);
+ if (file == NULL) {
+ commandError(fd, ACK_ERROR_NO_EXIST, "could not open file "
+ "\"%s\": %s", filename, strerror(errno));
+ return NULL;
+ }
+
+ sp = newStoredPlaylist(utf8path, fd, 1);
+ if (!sp)
+ goto out;
+
+ while ((tempInt = fgetc(file)) != EOF) {
+ s[slength] = tempInt;
+ if (s[slength] == '\n' || s[slength] == '\0') {
+ commentCharFound = 0;
+ s[slength] = '\0';
+ if (s[0] == PLAYLIST_COMMENT)
+ commentCharFound = 1;
+ if (strncmp(s, musicDir, strlen(musicDir)) == 0) {
+ strcpy(s, &(s[strlen(musicDir)]));
+ } else if (parentlen) {
+ temp = xstrdup(s);
+ memset(s, 0, MAXPATHLEN + 1);
+ strcpy(s, parent);
+ strncat(s, "/", MAXPATHLEN - parentlen);
+ strncat(s, temp, MAXPATHLEN - parentlen - 1);
+ if (strlen(s) >= MAXPATHLEN) {
+ commandError(sp->fd,
+ ACK_ERROR_PLAYLIST_LOAD,
+ "\"%s\" is too long", temp);
+ free(temp);
+ freeStoredPlaylist(sp);
+ sp = NULL;
+ goto out;
+ }
+ free(temp);
+ }
+ slength = 0;
+ temp = fsCharsetToUtf8(s);
+ if (temp && !commentCharFound) {
+ song = getSongFromDB(temp);
+ if (song) {
+ appendSongToStoredPlaylist(sp, song);
+ continue;
+ }
+
+ if (!isValidRemoteUtf8Url(temp))
+ continue;
+
+ song = newSong(temp, SONG_TYPE_URL, NULL);
+ if (song) {
+ appendSongToStoredPlaylist(sp, song);
+ freeJustSong(song);
+ }
+ }
+ } else if (slength == MAXPATHLEN) {
+ s[slength] = '\0';
+ commandError(sp->fd, ACK_ERROR_PLAYLIST_LOAD,
+ "line \"%s\" in playlist \"%s\" "
+ "is too long", s, utf8path);
+ freeStoredPlaylist(sp);
+ sp = NULL;
+ goto out;
+ } else if (s[slength] != '\r') {
+ slength++;
+ }
+ }
+
+out:
+ while (fclose(file) && errno == EINTR);
+ return sp;
+}
+
+void freeStoredPlaylist(StoredPlaylist *sp)
+{
+ if (sp->list)
+ freeList(sp->list);
+ if (sp->fspath)
+ free(sp->fspath);
+
+ free(sp);
+}
+
+static int moveSongInStoredPlaylist(int fd, StoredPlaylist *sp, int src, int dest)
+{
+ ListNode *srcNode, *destNode;
+
+ if (src >= lengthOfStoredPlaylist(sp) || dest >= lengthOfStoredPlaylist(sp) || src < 0 || dest < 0 || src == dest) {
+ commandError(fd, ACK_ERROR_ARG, "argument out of range");
+ return -1;
+ }
+
+ srcNode = nodeOfStoredPlaylist(sp, src);
+ if (!srcNode)
+ return -1;
+
+ destNode = nodeOfStoredPlaylist(sp, dest);
+
+ /* remove src */
+ if (srcNode->prevNode)
+ srcNode->prevNode->nextNode = srcNode->nextNode;
+ else
+ sp->list->firstNode = srcNode->nextNode;
+
+ if (srcNode->nextNode)
+ srcNode->nextNode->prevNode = srcNode->prevNode;
+ else
+ sp->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) {
+ sp->list->firstNode->prevNode = srcNode;
+ srcNode->nextNode = sp->list->firstNode;
+ srcNode->prevNode = NULL;
+ sp->list->firstNode = srcNode;
+ } else if ((dest + 1) == lengthOfStoredPlaylist(sp)) {
+ sp->list->lastNode->nextNode = srcNode;
+ srcNode->nextNode = NULL;
+ srcNode->prevNode = sp->list->lastNode;
+ sp->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;
+ }
+ }
+
+ return 0;
+}
+
+int moveSongInStoredPlaylistByPath(int fd, const char *utf8path, int src, int dest)
+{
+ StoredPlaylist *sp = loadStoredPlaylist(utf8path, fd);
+ if (!sp) {
+ commandError(fd, ACK_ERROR_UNKNOWN, "could not open playlist");
+ return -1;
+ }
+
+ if (moveSongInStoredPlaylist(fd, sp, src, dest) != 0) {
+ freeStoredPlaylist(sp);
+ return -1;
+ }
+
+ if (writeStoredPlaylist(sp) != 0) {
+ commandError(fd, ACK_ERROR_UNKNOWN, "failed to save playlist");
+ freeStoredPlaylist(sp);
+ return -1;
+ }
+
+ freeStoredPlaylist(sp);
+ return 0;
+}
+
+/* Not used currently
+static void removeAllFromStoredPlaylist(StoredPlaylist *sp)
+{
+ freeList(sp->list);
+ sp->list = makeList(DEFAULT_FREE_DATA_FUNC, 0);
+}
+*/
+
+int removeAllFromStoredPlaylistByPath(int fd, const char *utf8path)
+{
+ char *filename;
+ FILE *file;
+
+ filename = utf8pathToFsPathInStoredPlaylist(utf8path, fd);
+ if (!filename)
+ return -1;
+
+ while (!(file = fopen(filename, "w")) && errno == EINTR);
+ if (file == NULL) {
+ commandError(fd, ACK_ERROR_NO_EXIST, "could not open file "
+ "\"%s\": %s", filename, strerror(errno));
+ return -1;
+ }
+
+ while (fclose(file) != 0 && errno == EINTR);
+ return 0;
+}
+
+static int removeOneSongFromStoredPlaylist(int fd, StoredPlaylist *sp, int pos)
+{
+ ListNode *node = nodeOfStoredPlaylist(sp, pos);
+ if (!node) {
+ commandError(fd, ACK_ERROR_ARG,
+ "could not find song at position");
+ return -1;
+ }
+
+ deleteNodeFromList(sp->list, node);
+
+ return 0;
+}
+
+int removeOneSongFromStoredPlaylistByPath(int fd, const char *utf8path, int pos)
+{
+ StoredPlaylist *sp = loadStoredPlaylist(utf8path, fd);
+ if (!sp) {
+ commandError(fd, ACK_ERROR_UNKNOWN, "could not open playlist");
+ return -1;
+ }
+
+ if (removeOneSongFromStoredPlaylist(fd, sp, pos) != 0) {
+ freeStoredPlaylist(sp);
+ return -1;
+ }
+
+ if (writeStoredPlaylist(sp) != 0) {
+ commandError(fd, ACK_ERROR_UNKNOWN, "failed to save playlist");
+ freeStoredPlaylist(sp);
+ return -1;
+ }
+
+ freeStoredPlaylist(sp);
+ return 0;
+}
+
+static int writeStoredPlaylistToPath(StoredPlaylist *sp, const char *fspath)
+{
+ ListNode *node;
+ FILE *file;
+ char *s;
+
+ if (fspath == NULL)
+ return -1;
+
+ while (!(file = fopen(fspath, "w")) && errno == EINTR);
+ if (file == NULL) {
+ commandError(sp->fd, ACK_ERROR_NO_EXIST, "could not open file "
+ "\"%s\": %s", fspath, strerror(errno));
+ return -1;
+ }
+
+ node = sp->list->firstNode;
+ while (node != NULL) {
+ s = (char *)node->data;
+ if (isValidRemoteUtf8Url(s) || !playlist_saveAbsolutePaths)
+ s = utf8ToFsCharset(s);
+ else
+ s = rmp2amp(utf8ToFsCharset(s));
+ fprintf(file, "%s\n", s);
+ node = node->nextNode;
+ }
+
+ while (fclose(file) != 0 && errno == EINTR);
+ return 0;
+}
+
+int writeStoredPlaylist(StoredPlaylist *sp)
+{
+ return writeStoredPlaylistToPath(sp, sp->fspath);
+}
+
+int appendSongToStoredPlaylistByPath(int fd, const char *utf8path, Song *song)
+{
+ char *filename;
+ FILE *file;
+ char *s;
+
+ filename = utf8pathToFsPathInStoredPlaylist(utf8path, fd);
+ if (!filename)
+ return -1;
+
+ while (!(file = fopen(filename, "a")) && errno == EINTR);
+ if (file == NULL) {
+ commandError(fd, ACK_ERROR_NO_EXIST, "could not open file "
+ "\"%s\": %s", filename, strerror(errno));
+ return -1;
+ }
+
+ if (playlist_saveAbsolutePaths && song->type == SONG_TYPE_FILE)
+ s = rmp2amp(utf8ToFsCharset(getSongUrl(song)));
+ else
+ s = utf8ToFsCharset(getSongUrl(song));
+
+ fprintf(file, "%s\n", s);
+
+ while (fclose(file) != 0 && errno == EINTR);
+ return 0;
+}
+
+void appendPlaylistToStoredPlaylist(StoredPlaylist *sp, Playlist *playlist)
+{
+ int i;
+ for (i = 0; i < playlist->length; i++)
+ appendSongToStoredPlaylist(sp, playlist->songs[i]);
+}
+
+int renameStoredPlaylist(int fd, const char *utf8from, const char *utf8to)
+{
+ struct stat st;
+ char *from;
+ char *to;
+ int ret = 0;
+
+ from = xstrdup(utf8pathToFsPathInStoredPlaylist(utf8from, fd));
+ if (!from)
+ return -1;
+
+ to = xstrdup(utf8pathToFsPathInStoredPlaylist(utf8to, fd));
+ if (!to) {
+ free(from);
+ return -1;
+ }
+
+ if (stat(from, &st) != 0) {
+ commandError(fd, ACK_ERROR_NO_EXIST,
+ "no playlist named \"%s\"", utf8from);
+ ret = -1;
+ goto out;
+ }
+
+ if (stat(to, &st) == 0) {
+ commandError(fd, ACK_ERROR_EXIST, "a file or directory "
+ "already exists with the name \"%s\"", utf8to);
+ ret = -1;
+ goto out;
+ }
+
+ if (rename(from, to) < 0) {
+ commandError(fd, ACK_ERROR_UNKNOWN,
+ "could not rename playlist \"%s\" to \"%s\": %s",
+ utf8from, utf8to, strerror(errno));
+ ret = -1;
+ goto out;
+ }
+
+out:
+ free(from);
+ free(to);
+
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 11:16:02 +0000