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diff --git a/src/lyrics.c b/src/lyrics.c
index 917344701cf0d338af7d4526e155f4070004a61c..ae17a8fb9d18c0f1bd2a8dee7e463cea62d1c3ad 100644 (file)
--- a/src/lyrics.c
+++ b/src/lyrics.c
-/* ncmpc
- * Copyright (C) 2008 Max Kellermann <max@duempel.org>
- * This project's homepage is: http://www.musicpd.org
- *
+/* ncmpc (Ncurses MPD Client)
+ * (c) 2004-2010 The Music Player Daemon Project
+ * Project homepage: http://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
- */
+
+ * 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 "lyrics.h"
-#include "gcc.h"
+#include "config.h"
#include <assert.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/signal.h>
-#include <sys/wait.h>
-
-static GPtrArray *plugins;
-
-struct lyrics_loader {
- char *artist, *title;
-
- enum lyrics_loader_result result;
- guint next_plugin;
-
- pid_t pid;
- int fd;
- GIOChannel *channel;
- guint event_id;
-
- GString *data;
-};
-
-static int lyrics_register_plugin(const char *path0)
-{
- int ret;
- struct stat st;
- char *path;
-
- ret = stat(path0, &st);
- if (ret < 0)
- return -1;
-
- path = g_strdup(path0);
- g_ptr_array_add(plugins, path);
- return 0;
-}
+static struct plugin_list empty, plugins;
void lyrics_init(void)
{
- plugins = g_ptr_array_new();
-
- /* XXX configurable paths */
- lyrics_register_plugin("./lyrics/hd.py");
- lyrics_register_plugin("./lyrics/leoslyrics.py");
- lyrics_register_plugin("./lyrics/lyricswiki.rb");
+ plugin_list_init(&empty);
+ plugin_list_init(&plugins);
+ plugin_list_load_directory(&plugins, LYRICS_PLUGIN_DIR);
}
void lyrics_deinit(void)
{
- guint i;
-
- for (i = 0; i < plugins->len; ++i)
- free(g_ptr_array_index(plugins, i));
- g_ptr_array_free(plugins, TRUE);
+ plugin_list_deinit(&empty);
+ plugin_list_deinit(&plugins);
}
-static void
-lyrics_next_plugin(struct lyrics_loader *loader);
-
-static void
-lyrics_eof(struct lyrics_loader *loader)
+struct plugin_cycle *
+lyrics_load(const char *artist, const char *title,
+ plugin_callback_t callback, void *data)
{
- int ret, status;
-
- g_io_channel_unref(loader->channel);
- close(loader->fd);
- loader->fd = -1;
-
- ret = waitpid(loader->pid, &status, 0);
- loader->pid = -1;
-
- if (ret < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- g_string_free(loader->data, TRUE);
- loader->data = NULL;
-
- lyrics_next_plugin(loader);
- } else {
- loader->result = LYRICS_SUCCESS;
- }
-}
-
-static gboolean
-lyrics_data(mpd_unused GIOChannel *source,
- mpd_unused GIOCondition condition, gpointer data)
-{
- struct lyrics_loader *loader = data;
- char buffer[256];
- ssize_t nbytes;
-
- assert(loader != NULL);
- assert(loader->result = LYRICS_BUSY);
- assert(loader->fd >= 0);
- assert(loader->pid > 0);
- assert(source == loader->channel);
-
- if ((condition & G_IO_IN) == 0) {
- lyrics_eof(loader);
- return FALSE;
- }
-
- nbytes = condition & G_IO_IN
- ? read(loader->fd, buffer, sizeof(buffer))
- : 0;
- if (nbytes <= 0) {
- lyrics_eof(loader);
- return FALSE;
- }
-
- g_string_append_len(loader->data, buffer, nbytes);
- return TRUE;
-}
-
-static int
-lyrics_start_plugin(struct lyrics_loader *loader, const char *plugin_path)
-{
- int ret, fds[2];
- pid_t pid;
-
- assert(loader != NULL);
- assert(loader->result == LYRICS_BUSY);
- assert(loader->pid < 0);
- assert(loader->fd < 0);
- assert(loader->data == NULL);
-
- ret = pipe(fds);
- if (ret < 0)
- return -1;
-
- pid = fork();
-
- if (pid < 0) {
- close(fds[0]);
- close(fds[1]);
- return -1;
- }
+ const char *args[3] = { artist, title, NULL };
- if (pid == 0) {
- dup2(fds[1], 1);
- dup2(fds[1], 1);
- close(fds[0]);
- close(fds[1]);
- close(0);
- /* XXX close other fds? */
-
- execl(plugin_path, plugin_path,
- loader->artist, loader->title, NULL);
- _exit(1);
- }
-
- close(fds[1]);
-
- loader->pid = pid;
- loader->fd = fds[0];
- loader->data = g_string_new(NULL);
-
- /* XXX CLOEXEC? */
-
- loader->channel = g_io_channel_unix_new(loader->fd);
- loader->event_id = g_io_add_watch(loader->channel, G_IO_IN|G_IO_HUP,
- lyrics_data, loader);
-
- return 0;
-}
-
-static void
-lyrics_next_plugin(struct lyrics_loader *loader)
-{
- const char *plugin_path;
- int ret = -1;
-
- assert(loader->pid < 0);
- assert(loader->fd < 0);
- assert(loader->data == NULL);
-
- if (loader->next_plugin >= plugins->len) {
- /* no plugins left */
- loader->result = LYRICS_FAILED;
- return;
- }
-
- plugin_path = g_ptr_array_index(plugins, loader->next_plugin++);
- ret = lyrics_start_plugin(loader, plugin_path);
- if (ret < 0) {
- /* system error */
- loader->result = LYRICS_FAILED;
- return;
- }
-}
-
-struct lyrics_loader *
-lyrics_load(const char *artist, const char *title)
-{
- struct lyrics_loader *loader = g_new(struct lyrics_loader, 1);
-
- assert(artist != NULL);
- assert(title != NULL);
-
- if (loader == NULL)
- return NULL;
-
- loader->artist = g_strdup(artist);
- loader->title = g_strdup(title);
- loader->result = LYRICS_BUSY;
- loader->next_plugin = 0;
- loader->pid = -1;
- loader->fd = -1;
- loader->data = NULL;
-
- lyrics_next_plugin(loader);
-
- return loader;
-}
-
-void
-lyrics_free(struct lyrics_loader *loader)
-{
- if (loader->fd >= 0) {
- g_source_remove(loader->event_id);
- g_io_channel_unref(loader->channel);
- close(loader->fd);
- }
-
- if (loader->pid > 0) {
- int status;
-
- kill(loader->pid, SIGTERM);
- waitpid(loader->pid, &status, 0);
- }
-
- if (loader->data != NULL)
- g_string_free(loader->data, TRUE);
-}
-
-enum lyrics_loader_result
-lyrics_result(struct lyrics_loader *loader)
-{
- return loader->result;
-}
-
-const GString *
-lyrics_get(struct lyrics_loader *loader)
-{
- assert(loader->result == LYRICS_SUCCESS);
- assert(loader->pid < 0);
- assert(loader->data != NULL);
+ if (artist == NULL || title == NULL)
+ return plugin_run(&empty, args, callback, data);
- return loader->data;
+ return plugin_run(&plugins, args, callback, data);
}