Match a path which may contain a wildcard
/*
Copyright (c) 2003 eInnovation Inc. All rights reserved
This library is free software; you can redistribute it and/or modify it under the terms
of the GNU Lesser General Public License as published by the Free Software Foundation;
either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details.
*/
/*--
Copyright (C) 2001-2002 Anthony Eden.
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from Anthony Eden (me@anthonyeden.com).
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software itself an acknowledgement equivalent to the following:
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*/
/**
* Utility class for working with request paths.
*
* @author Anthony Eden
*/
public final class PathUtilities
{
private static final String WILDCARD = "*";
/**
* Match a path which may contain a wildcard.
*
* @param requestPath The request path submitted by the client
* @param exPath The match path with * wildcard
*
* @return DOCME
*/
public static boolean match(String requestPath, String wildcardPath)
{
// *somestuffhereverylong* != stuff
if( wildcardPath.length() - 2 > requestPath.length())
{
return false;
}
//log.debug("match(" + requestPath + "," + exPath + ")");
int wildcardIndex = wildcardPath.indexOf(WILDCARD);
if (wildcardIndex == -1)
{
return requestPath.equalsIgnoreCase(wildcardPath);
}
else if( wildcardPath.charAt(0) == '*' && wildcardPath.charAt(wildcardPath.length()-1) == '*' )
{
String path = wildcardPath.substring(1,wildcardPath.length()-1);
return requestPath.indexOf(path) > -1;
}
else if (wildcardIndex == (wildcardPath.length() - 1)) //ends with *
{
//log.debug("Wildcard appears at end of match path.");
String checkString = wildcardPath.substring(0, wildcardPath.length() - 1);
// /stuff/* -> /stuff /stuff/abc* != /stuff/ab
if( checkString.charAt(checkString.length()-1) == '/')
{
checkString = checkString.substring(0,checkString.length() - 1);
}
//log.debug("String after wildcard removed: " + checkString);
boolean answer = requestPath.startsWith(checkString);
//log.debug("Does " + requestPath + " start with " + checkString + "? " + answer);
return answer;
}
else if( wildcardPath.charAt(0) == '*')
{
String checkString = wildcardPath.substring(1);
//log.debug("String after wildcard removed: " + checkString);
boolean answer = requestPath.endsWith(checkString);
return answer;
}
else
{
//log.debug("Wildcard appears in the middle of the string");
String preMatch = wildcardPath.substring(0, wildcardIndex);
String postMatch = wildcardPath.substring(wildcardIndex + 1);
return requestPath.startsWith(preMatch) && requestPath.endsWith(postMatch);
}
}
}
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