mcconnell 2003/08/23 10:15:49
Added: merlin/composition-spi/src/java/org/apache/avalon/composition/util
StringHelper.java
Log:
A utility class that provides support for improved presentation of log messsages.
Revision Changes Path
1.1
avalon-sandbox/merlin/composition-spi/src/java/org/apache/avalon/composition/util/StringHelper.java
Index: StringHelper.java
===================================================================
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. 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 following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software
* itself, if and wherever such third-party acknowledgments
* normally appear.
*
* 4. The names "Jakarta", "Avalon", and "Apache Software Foundation"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* 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 APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.avalon.composition.util;
import java.io.File;
import java.net.URL;
/**
* General utilities supporting the packaging of string containing file references.
* @author <a href="mailto:[EMAIL PROTECTED]">Stephen McConnell</a>
*/
public class StringHelper
{
private static final String USER_DIR = getUserDir();
private static final String MERLIN_HOME = getMerlinHome();
private static final String MERLIN_REPO_LOCAL = getRepositoryLocal();
public static String toString( String name )
{
if( name == null ) return "";
String str = name.replace( '\\', '/' );
if( str.indexOf( USER_DIR ) > -1 )
{
str = getString( str, USER_DIR, "${user.dir}" );
}
if( ( MERLIN_HOME != null ) && str.indexOf( MERLIN_HOME ) > -1 )
{
str = getString( str, MERLIN_HOME, "${merlin.home}" );
}
if( ( MERLIN_REPO_LOCAL != null ) && str.indexOf( MERLIN_REPO_LOCAL ) > -1 )
{
str = getString( str, MERLIN_REPO_LOCAL, "${merlin.repository.local}" );
}
return str;
}
public static String toString( File file )
{
if( file == null ) return "";
return toString( file.toString() );
}
public static String toString( URL url )
{
if( url == null ) return "";
return toString( url.toString() );
}
public static String toString( URL[] urls )
{
StringBuffer buffer = new StringBuffer();
for( int i=0; i<urls.length; i++ )
{
buffer.append( toString( urls[i] ) );
if( ( i > 0 ) && ( i < ( urls.length -1 ) ) )
{
buffer.append( ", " );
}
}
return buffer.toString();
}
public static String toString( String[] names )
{
StringBuffer buffer = new StringBuffer();
for( int i=0; i<names.length; i++ )
{
if( ( i > 0 ) && ( i < ( names.length -1 ) ) )
{
buffer.append( ", " );
}
buffer.append( toString( names[i] ) );
}
return buffer.toString();
}
private static String getString( String name, String pattern, String replacement
)
{
final int n = name.indexOf( pattern );
if( n == -1 ) return name;
if( name.startsWith( pattern ) )
{
return replacement + name.substring( pattern.length() );
}
else
{
String header = name.substring( 0, n );
String tail = name.substring( n + pattern.length() );
return header + replacement + tail;
}
}
private static String getUserDir()
{
return System.getProperty( "user.dir" ).replace( '\\', '/' );
}
private static String getMerlinHome()
{
String home = System.getProperty( "merlin.home" );
if( home == null ) return null;
return home.replace( '\\', '/' );
}
private static String getRepositoryLocal()
{
String local = System.getProperty( "merlin.repository.local" );
if( local== null ) return null;
return local.replace( '\\', '/' );
}
}
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