/*
* 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 WARRANTIESOR 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.aries.util;
import java.util.ArrayList;
import java.util.List;
import org.apache.aries.util.internal.MessageUtil;
public class ManifestHeaderUtils {
/**
*
* Splits a delimiter separated string, tolerating presence of non separator commas
* within double quoted segments.
*
* Eg.
* com.ibm.ws.eba.helloWorldService;version="[1.0.0, 1.0.0]" &
* com.ibm.ws.eba.helloWorldService;version="1.0.0"
* com.ibm.ws.eba.helloWorld;version="2";bundle-version="[2,30)"
* com.acme.foo;weirdAttr="one;two;three";weirdDir:="1;2;3"
* @param value the value to be split
* @param delimiter the delimiter string such as ',' etc.
* @return List<String> the components of the split String in a list
*/
public static List<String> split(String value, String delimiter)
{
List<String> result = new ArrayList<String>();
if (value != null) {
String[] packages = value.split(delimiter);
for (int i = 0; i < packages.length; ) {
String tmp = packages[i++].trim();
// if there is a odd number of " in a string, we need to append
while (count(tmp, "\"") % 2 != 0) {
// check to see if we need to append the next package[i++]
if (i<packages.length)
tmp = tmp + delimiter + packages[i++].trim();
else
// oops. The double quotes are not paired up. We have reached to the end of the string.
throw new IllegalArgumentException(MessageUtil.getMessage("UTIL0008E",tmp));
}
result.add(tmp);
}
}
return result;
}
/**
* count the number of characters in a string
* @param parent The string to be searched
* @param subString The substring to be found
* @return the number of occurrence of the subString
*/
private static int count(String parent, String subString) {
int count = 0 ;
int i = parent.indexOf(subString);
while (i > -1) {
if (parent.length() >= i+1)
parent = parent.substring(i+1);
count ++;
i = parent.indexOf(subString);
}
return count;
}
}