com.hp.hpl.jena.util.LocatorFile Maven / Gradle / Ivy
/*
* (c) Copyright 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP
* All rights reserved.
* [See end of file]
*/
package com.hp.hpl.jena.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.AccessControlException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** Location files in the filing system.
* A FileLocator can have a "current directory" - this is separate from any
* location mapping (see @link{LocationMapping}) as it applies only to files.
*
* @author Andy Seaborne
* @version $Id: LocatorFile.java,v 1.1 2009/06/29 08:55:47 castagna Exp $
*/
public class LocatorFile implements Locator
{
static Logger log = LoggerFactory.getLogger(LocatorFile.class) ;
private String altDir = null ;
private String altDirLogStr = "" ;
public LocatorFile(String dir)
{
// if ( false )
// {
// if ( dir == null )
// {
// try {
// //String wd = JenaRuntime.getSystemProperty("user.dir") ;
// String wd = new File(".").getCanonicalPath() ;
// log.debug("Base file directory: "+wd) ;
// } catch (IOException ex)
// {
// log.error("Failed to discover the working directory", ex) ;
// }
// return ;
// }
// else
// {
// log.debug("Base file directory: "+dir) ;
// }
// }
if ( dir != null )
{
if ( dir.endsWith("/") || dir.endsWith(java.io.File.separator) )
dir = dir.substring(0,dir.length()-1) ;
altDirLogStr = " ["+dir+"]" ;
}
altDir = dir ;
}
LocatorFile()
{
this(null) ;
}
@Override
public boolean equals( Object other )
{
return
other instanceof LocatorFile
&& equals( altDir, ((LocatorFile) other).altDir );
}
private boolean equals( String a, String b )
{
return a == null ? b == null : a.equals( b );
}
@Override
public int hashCode()
{
return altDir.hashCode();
}
private File toFile(String filenameOrURI)
{
String fn = FileUtils.toFilename(filenameOrURI) ;
if ( fn == null )
return null ;
if ( altDir != null && ! fn.startsWith("/") && ! fn.startsWith(FileManager.filePathSeparator) )
fn = altDir+java.io.File.separator+fn ;
return new File(fn) ;
}
public boolean exists(String filenameOrURI)
{
File f = toFile(filenameOrURI) ;
if ( f == null )
return false ;
return f.exists() ;
}
public TypedStream open(String filenameOrURI)
{
// Worry about %20.
// toFile calls FileUtils.toFilename(filenameOrURI) ;
File f = toFile(filenameOrURI) ;
try {
if ( f == null || !f.exists() )
{
if ( FileManager.logAllLookups && log.isTraceEnabled())
log.trace("Not found: "+filenameOrURI+altDirLogStr) ;
return null ;
}
} catch (AccessControlException e) {
log.warn("Security problem testing for file", e);
return null;
}
try {
InputStream in = new FileInputStream(f) ;
if ( FileManager.logAllLookups && log.isTraceEnabled() )
log.trace("Found: "+filenameOrURI+altDirLogStr) ;
// Create base -- Java 1.4-isms
//base = f.toURI().toURL().toExternalForm() ;
//base = base.replaceFirst("^file:/([^/])", "file:///$1") ;
return new TypedStream(in) ;
} catch (IOException ioEx)
{
// Includes FileNotFoundException
// We already tested whether the file exists or not.
log.warn("File unreadable (but exists): "+f.getPath()+" Exception: "+ioEx.getMessage()) ;
return null ;
}
}
public String getName()
{
String tmp = "LocatorFile" ;
if ( altDir != null )
tmp = tmp+"("+altDir+")" ;
return tmp ;
}
}
/*
* (c) Copyright 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP
* 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 name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 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.
*/
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