/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.myfaces.tobago.example.demo.jsp;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.oro.text.perl.Perl5Util;
import org.apache.oro.text.regex.MalformedPatternException;
import org.apache.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.PatternMatcherInput;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;
public abstract class AbstractConverter implements Converter {
private static final Logger LOG = LoggerFactory.getLogger(AbstractConverter.class);
private Pattern pattern;
private Perl5Matcher matcher = new Perl5Matcher();
private Perl5Compiler compiler = new Perl5Compiler();
private Perl5Util util = new Perl5Util();
public abstract Pattern initPattern() throws MalformedPatternException;
public Perl5Compiler getCompiler() {
return compiler;
}
public Perl5Util getUtil() {
return util;
}
public Pattern getPattern() {
if (pattern == null) {
try {
pattern = initPattern();
} catch (MalformedPatternException e) {
LOG.error("", e);
}
}
return pattern;
}
private String getFragment(String data, int start, int end) {
return data.substring(start, end);
}
protected String convertMisc(String data, int start, int end) {
return convertMisc(getFragment(data, start, end));
}
protected String convertMatch(String data, int start, int end) {
return convertMatch(getFragment(data, start, end));
}
public String convertMisc(String fragment) {
return fragment;
}
public String convert(String input) {
StringBuilder buffer = new StringBuilder();
int lastStart = 0;
PatternMatcherInput patternMatcherInput = new PatternMatcherInput(input);
Pattern pattern = getPattern();
if (matcher.contains(patternMatcherInput, pattern)) {
do {
MatchResult result = matcher.getMatch();
int start = result.beginOffset(0);
int end = result.endOffset(0);
buffer.append(convertMisc(input, lastStart, start));
buffer.append(convertMatch(input, start, end));
lastStart = end;
} while (matcher.contains(patternMatcherInput, pattern));
}
buffer.append(convertMisc(input, lastStart, input.length()));
return buffer.toString();
}
public String highlightStrings(String input) {
return util.substitute("s/(\".*?\")/<span class=\"string\">$1<\\/span>/g", input);
}
}