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/*
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.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions, and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions, and the disclaimer that follows
these conditions in the documentation and/or other materials
provided with the distribution.
3. The name "JPublish" must not be used to endorse or promote products
derived from this software without prior written permission. For
written permission, please contact me@anthonyeden.com.
4. Products derived from this software may not be called "JPublish", nor
may "JPublish" appear in their name, without prior written permission
from Anthony Eden (me@anthonyeden.com).
In addition, I request (but do not require) that you include in the
end-user documentation provided with the redistribution and/or in the
software itself an acknowledgement equivalent to the following:
"This product includes software developed by
Anthony Eden (http://www.anthonyeden.com/)."
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
For more information on JPublish, please see <http://www.jpublish.org/>.
*/
/**
* Utility class for working with request paths.
*
* @author Anthony Eden
*/
public final class PathUtilities
{
private static final String WILDCARD = "*";
/**
* Builds a path that might be within or one above a parent path String ret =
* buildRelative("../junk.txt","/a/b/c/something.html") Will return /a/b/junk.txt This code
* only returns a changed endPart if it starts with a dot .
*
* @param endPart
* @param fullParentPath
*
* @return
*/
public static String buildRelative(String endPart, String fullParentPath)
{
String basepath = null;
if ( fullParentPath != null)
{
fullParentPath = fullParentPath.replace('\\','/');
}
//TODO: Make this work with random number of dots
//if we are dealing with relative path then we need to make sure the basepath ends with a /
if (endPart.startsWith(".") && (fullParentPath != null) && !fullParentPath.endsWith("/"))
{
//so with this function /examples/benchmark -> /examples/benchmark/
//is this parent a directory or a file, lets check for a .
int lastslash = fullParentPath.lastIndexOf("/");
int lastperiod = fullParentPath.lastIndexOf(".");
if (lastslash > lastperiod)
{
//must be a directory
basepath = fullParentPath;
}
}
if (basepath == null)
{
basepath = extractDirectoryPath(fullParentPath);
}
if ( basepath == null )
{
basepath = "";
}
String relative = endPart;
if (endPart.startsWith(".."))
{
//strip the filename
if (basepath.endsWith("/"))
{
basepath = basepath.substring(0, basepath.length() - 1);
}
basepath = basepath.substring(0, basepath.lastIndexOf("/"));
relative = basepath + endPart.substring(2);
}
else if (endPart.startsWith("."))
{
relative = basepath + endPart.substring(1);
}
if ( !relative.startsWith("/"))
{
relative = "/" + relative;
}
return relative;
}
/**
* Get the parent of the given path.
*
* @param path The path for which to retrieve the parent
*
* @return The parent path. /sub/sub2/index.html -> /sub/sub2 If the given path is the root path ("/" or ""), return a blank string.
*/
public static String extractDirectoryPath(String path)
{
if ((path == null) || path.equals("") || path.equals("/"))
{
return "";
}
int lastSlashPos = path.lastIndexOf('/');
if (lastSlashPos >= 0)
{
return path.substring(0, lastSlashPos); //strip off the slash
}
else
{
return ""; //we expect people to add + "/somedir on their own
}
}
}
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