cue/CueParser: move to playlist/

1 files changed, 144 insertions, 0 deletions

diff --git a/src/playlist/cue/CueParser.hxx b/src/playlist/cue/CueParser.hxx
new file mode 100644
index 000000000..7e040169b
--- /dev/null
+++ b/src/playlist/cue/CueParser.hxx
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_CUE_PARSER_HXX
+#define MPD_CUE_PARSER_HXX
+
+#include "check.h"
+#include "tag/TagBuilder.hxx"
+#include "Compiler.h"
+
+#include <string>
+
+class DetachedSong;
+struct Tag;
+
+class CueParser {
+	enum {
+		/**
+		 * Parsing the CUE header.
+		 */
+		HEADER,
+
+		/**
+		 * Parsing a "FILE ... WAVE".
+		 */
+		WAVE,
+
+		/**
+		 * Ignore everything until the next "FILE".
+		 */
+		IGNORE_FILE,
+
+		/**
+		 * Parsing a "TRACK ... AUDIO".
+		 */
+		TRACK,
+
+		/**
+		 * Ignore everything until the next "TRACK".
+		 */
+		IGNORE_TRACK,
+	} state;
+
+	/**
+	 * Tags read from the CUE header.
+	 */
+	TagBuilder header_tag;
+
+	/**
+	 * Tags read for the current song (attribute #current).  When
+	 * #current gets moved to #previous, TagBuilder::Commit() will
+	 * be called.
+	 */
+	TagBuilder song_tag;
+
+	std::string filename;
+
+	/**
+	 * The song currently being edited.
+	 */
+	DetachedSong *current;
+
+	/**
+	 * The previous song.  It is remembered because its end_time
+	 * will be set to the current song's start time.
+	 */
+	DetachedSong *previous;
+
+	/**
+	 * A song that is completely finished and can be returned to
+	 * the caller via cue_parser_get().
+	 */
+	DetachedSong *finished;
+
+	/**
+	 * Set to true after previous.end_time has been updated to the
+	 * start time of the current song.
+	 */
+	bool last_updated;
+
+	/**
+	 * Tracks whether cue_parser_finish() has been called.  If
+	 * true, then all remaining (partial) results will be
+	 * delivered by cue_parser_get().
+	 */
+	bool end;
+
+public:
+	CueParser();
+	~CueParser();
+
+	/**
+	 * Feed a text line from the CUE file into the parser.  Call
+	 * cue_parser_get() after this to see if a song has been finished.
+	 */
+	void Feed(const char *line);
+
+	/**
+	 * Tell the parser that the end of the file has been reached.  Call
+	 * cue_parser_get() after this to see if a song has been finished.
+	 * This procedure must be done twice!
+	 */
+	void Finish();
+
+	/**
+	 * Check if a song was finished by the last cue_parser_feed() or
+	 * cue_parser_finish() call.
+	 *
+	 * @return a song object that must be freed by the caller, or NULL if
+	 * no song was finished at this time
+	 */
+	DetachedSong *Get();
+
+private:
+	gcc_pure
+	TagBuilder *GetCurrentTag();
+
+	/**
+	 * Commit the current song.  It will be moved to "previous",
+	 * so the next song may soon edit its end time (using the next
+	 * song's start time).
+	 */
+	void Commit();
+
+	void Feed2(char *p);
+};
+
+#endif