/*
* JFugue, an Application Programming Interface (API) for Music Programming
* http://www.jfugue.org
*
* Copyright (C) 2003-2014 David Koelle
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.staccato;
public class BeatTimeSubparser implements Subparser
{
public static final char BEATTIME = '@';
public static final char BEATTIME_USE_MARKER = '#';
private static BeatTimeSubparser instance;
public static BeatTimeSubparser getInstance() {
if (instance == null) {
instance = new BeatTimeSubparser();
}
return instance;
}
@Override
public boolean matches(String music) {
return (music.charAt(0) == BEATTIME);
}
@Override
public int parse(String music, StaccatoParserContext context) {
if (music.charAt(0) == BEATTIME) {
int posNextSpace = StaccatoUtil.findNextOrEnd(music, ' ', 0);
if (posNextSpace > 1) {
String timeTrackId = music.substring(1, posNextSpace);
if (timeTrackId.matches("([0-9]+(\\.[0-9]+)*)")) {
double time = Double.parseDouble(timeTrackId);
context.getParser().fireTrackBeatTimeRequested(time);
} else if (timeTrackId.charAt(0) == BEATTIME_USE_MARKER) {
String timeBookmarkId = timeTrackId.substring(1, timeTrackId.length());
context.getParser().fireTrackBeatTimeBookmarkRequested(timeBookmarkId);
}
}
return Math.max(1, posNextSpace);
}
return 0;
}
}