Merge pull request #127 from jcorporation/playlist_search

Add new stored playlist search api

include/mpd/playlist.h

@@ -599,6 +599,63 @@ mpd_run_rm(struct mpd_connection *connection, const char *name);
 bool
 mpd_send_playlistlength(struct mpd_connection *connection, const char *name);
 
+
+/**
+ * Search for songs in the stored playlist.
+ * A window may be specified with mpd_playlist_search_add_window().
+ * Send the search command with mpd_playlist_search_commit(), and read the
+ * response items with mpd_recv_song().
+ *
+ * @param connection the connection to MPD
+ * @param name the name of the stored playlist
+ * @param expression the expression string; must be enclosed in
+ * parentheses
+ * @return true on success, false on error
+ *
+ * @since libmpdclient 2.23, MPD 0.24
+ */
+bool
+mpd_playlist_search_begin(struct mpd_connection *connection, const char *name,
+			  const char *expression);
+
+/**
+ * Request only a portion of the result set.
+ *
+ * @param connection a #mpd_connection
+ * @param start the start offset (including)
+ * @param end the end offset (not including)
+ * value "UINT_MAX" makes the end of the range open
+ * @return true on success, false on error
+ *
+ * @since libmpdclient 2.23, MPD 0.24
+ */
+bool
+mpd_playlist_search_add_window(struct mpd_connection *connection,
+			       unsigned start, unsigned end);
+
+/**
+ * Starts the real search.
+ *
+ * @param connection the connection to MPD
+ * @return true on success, false on error
+ *
+ * @since libmpdclient 2.23, MPD 0.24
+ */
+bool
+mpd_playlist_search_commit(struct mpd_connection *connection);
+
+/**
+ * Cancels the search request before you have called
+ * mpd_playlist_search_commit(). Call this to clear the current search
+ * request.
+ *
+ * @param connection the connection to MPD
+ *
+ * @since libmpdclient 2.23, MPD 0.24
+ */
+void
+mpd_playlist_search_cancel(struct mpd_connection *connection);
+
 #ifdef __cplusplus
 }
 #endif

libmpdclient.ld

@@ -271,6 +271,10 @@ global:
 	mpd_parse_queue_save_mode;
 	mpd_lookup_queue_save_mode;
 	mpd_send_playlistlength;
+	mpd_playlist_search_begin;
+	mpd_playlist_search_add_window;
+	mpd_playlist_search_commit;
+	mpd_playlist_search_cancel;
 
 	/* mpd/queue.h */
 	mpd_send_list_queue_meta;

src/cplaylist.c

@@ -2,12 +2,16 @@
 // Copyright The Music Player Daemon Project
 
 #include <mpd/playlist.h>
+#include <mpd/connection.h>
 #include <mpd/position.h>
 #include <mpd/send.h>
 #include <mpd/response.h>
+#include "internal.h"
 #include "isend.h"
+#include "request.h"
 #include "run.h"
 
+#include <assert.h>
 #include <limits.h>
 #include <stdio.h>
 #include <string.h>
@@ -319,3 +323,62 @@ mpd_send_playlistlength(struct mpd_connection *connection, const char *name)
 {
 	return mpd_send_command(connection, "playlistlength", name, NULL);
 }
+
+bool
+mpd_playlist_search_begin(struct mpd_connection *connection, const char *name,
+			  const char *expression)
+{
+	assert(name != NULL);
+	assert(expression != NULL);
+
+	if (!mpd_request_begin(connection))
+		return false;
+
+	char *arg_name = mpd_sanitize_arg(name);
+	if (arg_name == NULL) {
+		mpd_error_code(&connection->error, MPD_ERROR_OOM);
+		return false;
+	}
+
+	char *arg_expression = mpd_sanitize_arg(expression);
+	if (arg_expression == NULL) {
+		mpd_error_code(&connection->error, MPD_ERROR_OOM);
+		free(arg_name);
+		return false;
+	}
+
+	const size_t size = 17 + strlen(arg_name) + 3 + strlen(arg_expression) + 2;
+	connection->request = malloc(size);
+	if (connection->request == NULL) {
+		mpd_error_code(&connection->error, MPD_ERROR_OOM);
+		free(arg_name);
+		free(arg_expression);
+		return false;
+	}
+
+	snprintf(connection->request, size, "searchplaylist \"%s\" \"%s\"",
+		arg_name, arg_expression);
+
+	free(arg_name);
+	free(arg_expression);
+	return true;
+}
+
+bool
+mpd_playlist_search_add_window(struct mpd_connection *connection,
+			       unsigned start, unsigned end)
+{
+	return mpd_request_add_window(connection, start, end);
+}
+
+bool
+mpd_playlist_search_commit(struct mpd_connection *connection)
+{
+	return mpd_request_commit(connection);
+}
+
+void
+mpd_playlist_search_cancel(struct mpd_connection *connection)
+{
+	mpd_request_cancel(connection);
+}