/*
* 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;
/** Changes spaces in parentheses to underscores, since the Staccato string is split on parentheses */
public class ParenSpacesPreprocessor implements Preprocessor
{
private static ParenSpacesPreprocessor instance;
public static ParenSpacesPreprocessor getInstance() {
if (instance == null) {
instance = new ParenSpacesPreprocessor();
}
return instance;
}
@Override
public String preprocess(String s, StaccatoParserContext context) {
StringBuilder buddy = new StringBuilder();
int pos = 0;
while (pos < s.length()) {
int keepSpacesUntil = StaccatoUtil.findNextOrEnd(s, '(', pos);
int endParen = StaccatoUtil.findNextOrEnd(s, ')', keepSpacesUntil);
buddy.append(s.substring(pos, keepSpacesUntil));
for (int i=keepSpacesUntil; i < endParen; i++) {
if (s.charAt(i) == ' ') {
buddy.append('_');
} else {
buddy.append(s.charAt(i));
}
}
pos = endParen;
}
return buddy.toString();
}
public static String unprocess(String s) {
StringBuilder buddy = new StringBuilder();
for (int i=0; i < s.length(); i++) {
if (s.charAt(i) == '_') {
buddy.append(' ');
} else {
buddy.append(s.charAt(i));
}
}
return buddy.toString();
}
}