package org.apache.archiva.common.utils;
/*
* 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.
*/
import org.apache.commons.lang.StringUtils;
import java.io.File;
import java.net.MalformedURLException;
/**
* PathUtil - simple utility methods for path manipulation.
*
*
*/
public class PathUtil
{
public static String toUrl( String path )
{
// Is our work already done for us?
if ( path.startsWith( "file:/" ) )
{
return path;
}
return toUrl( new File( path ) );
}
public static String toUrl( File file )
{
try
{
return file.toURI().toURL().toExternalForm();
}
catch ( MalformedURLException e )
{
String pathCorrected = StringUtils.replaceChars( file.getAbsolutePath(), '\\', '/' );
if ( pathCorrected.startsWith( "file:/" ) )
{
return pathCorrected;
}
return "file://" + pathCorrected;
}
}
/**
* Given a basedir and a child file, return the relative path to the child.
*
* @param basedir the basedir.
* @param file the file to get the relative path for.
* @return the relative path to the child. (NOTE: this path will NOT start with a {@link File#separator} character)
*/
public static String getRelative( String basedir, File file )
{
return getRelative( basedir, file.getAbsolutePath() );
}
/**
* Given a basedir and a child file, return the relative path to the child.
*
* @param basedir the basedir.
* @param child the child path (can be a full path)
* @return the relative path to the child. (NOTE: this path will NOT start with a {@link File#separator} character)
*/
public static String getRelative( String basedir, String child )
{
if ( basedir.endsWith( "/" ) || basedir.endsWith( "\\" ) )
{
basedir = basedir.substring( 0, basedir.length() - 1 );
}
if ( child.startsWith( basedir ) )
{
// simple solution.
return child.substring( basedir.length() + 1 );
}
String absoluteBasedir = new File( basedir ).getAbsolutePath();
if ( child.startsWith( absoluteBasedir ) )
{
// resolved basedir solution.
return child.substring( absoluteBasedir.length() + 1 );
}
// File is not within basedir.
throw new IllegalStateException(
"Unable to obtain relative path of file " + child + ", it is not within basedir " + basedir + "." );
}
}