renamed storedPlaylist.c to stored_playlist.c

No CamelCase in file names.

1 files changed, 340 insertions, 0 deletions

diff --git a/src/stored_playlist.c b/src/stored_playlist.c
new file mode 100644
index 00000000..73362cae
--- /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;
+}