org.slf4j.migrator.line.MultiGroupConversionRule Maven / Gradle / Ivy
/**
* Copyright (c) 2004-2011 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j.migrator.line;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* This class represents a conversion rule It uses a Pattern and defines for
* each capturing group of this Pattern a replacement text
*
* @author jean-noelcharpin
*
*/
public class MultiGroupConversionRule implements ConversionRule {
// It is extremely unlikely to encounter more than 10 groups in one of
// our conversion reg-expressions
final private static int MAX_GROUPS = 10;
private final Pattern pattern;
private final String[] replacementTable = new String[MAX_GROUPS];
public MultiGroupConversionRule(Pattern pattern) {
this.pattern = pattern;
}
/*
* (non-Javadoc)
*
* @see org.slf4j.converter.ConversionRule#getPattern()
*/
public Pattern getPattern() {
return pattern;
}
public void addReplacement(int groupIndex, String replacement) {
if (groupIndex == 0) {
throw new IllegalArgumentException("regex groups start at 1, not zero");
}
replacementTable[groupIndex] = replacement;
}
/*
* (non-Javadoc)
*
* @see org.slf4j.converter.ConversionRule#getReplacement(java.lang.Integer)
*/
public String getReplacement(int groupIndex) {
return replacementTable[groupIndex];
}
/*
* (non-Javadoc)
*
* @see org.slf4j.converter.ConversionRule#replace(java.util.regex.Matcher)
*/
public String replace(Matcher matcher) {
StringBuilder replacementBuffer = new StringBuilder();
String replacementText;
for (int group = 1; group <= matcher.groupCount(); group++) {
replacementText = getReplacement(group);
if (replacementText != null) {
// System.out.println("replacing group " + group + " : "
// + matcher.group(group) + " with " + replacementText);
replacementBuffer.append(replacementText);
} else {
replacementBuffer.append(matcher.group(group));
}
}
return replacementBuffer.toString();
}
public String getAdditionalLine() {
return null;
}
}