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Core components for WebLaf
/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WebLookAndFeel 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WebLookAndFeel library. If not, see .
*/
package com.alee.utils;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
/**
* This class provides a set of utilities to work with URL.
*
* @author Mikle Garin
*/
public final class NetUtils
{
/**
* Returns address represented by the specified URL object.
*
* @param url URL object to process
* @return address represented by the specified URL object
*/
public static String getAddress ( final URL url )
{
try
{
return url.toURI ().toASCIIString ();
}
catch ( final URISyntaxException e )
{
return url.toExternalForm ();
}
}
/**
* Returns URL for the specified address.
*
* @param address address to process
* @return URL for the specified address
*/
public static URL getURL ( final String address )
{
try
{
return new URL ( address );
}
catch ( final MalformedURLException e )
{
return null;
}
}
/**
* Returns URI for the specified address.
*
* @param address address to process
* @return URI for the specified address
*/
public static URI getURI ( final String address )
{
final URL url = getURL ( address );
return url != null ? toURI ( url ) : null;
}
/**
* Returns URI for the specified address.
*
* @param url URL object to process
* @return URI for the specified address
*/
public static URI toURI ( final URL url )
{
try
{
return url != null ? url.toURI () : null;
}
catch ( final URISyntaxException e )
{
return null;
}
}
/**
* Returns host for the specified address.
*
* @param address address to process
* @return host for the specified address
*/
public static String getHost ( final String address )
{
final URL url = getURL ( address );
return url != null ? url.getHost () : null;
}
/**
* Returns port for the specified address.
*
* @param address address to process
* @return port for the specified address
*/
public static int getPort ( final String address )
{
final URL url = getURL ( address );
return url != null ? url.getPort () : -1;
}
/**
* Returns base address for the specified complete address.
*
* @param address complete address to process
* @return base address for the specified complete address
*/
public static String getBaseAddress ( final String address )
{
final URL url = getURL ( address );
return url != null ? ( url.getHost () + ( url.getPort () != 80 && url.getPort () != -1 ? ":" + url.getPort () : "" ) ) : null;
}
/**
* Joins two url paths without leaving any unnecessary path separators.
*
* @param part1 first url path
* @param part2 second url path
* @return properly joined url paths
*/
public static String joinUrlPaths ( final String part1, final String part2 )
{
final String separator = "/";
final boolean p1s = part1.endsWith ( separator );
final boolean p2s = part2.startsWith ( separator );
if ( p1s && p2s )
{
return part1 + part2.substring ( 1 );
}
else if ( !p1s && !p2s )
{
return part1 + separator + part2;
}
else
{
return part1 + part2;
}
}
}
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