/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.fonts.io;
import org.pentaho.reporting.libraries.resourceloader.ResourceData;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import java.io.File;
import java.io.IOException;
/**
* The current use of iText and its inherent dependence on the font filename makes it not feasible to use libLoader for
* the font loading right now.
*
* @author Thomas Morgner
*/
public class ResourceFontDataInputSource implements FontDataInputSource {
//private transient byte[] rawData;
private transient ResourceData rawData;
private ResourceManager loader;
private ResourceKey source;
public ResourceFontDataInputSource( final ResourceManager loader,
final ResourceKey source ) {
if ( loader == null ) {
throw new NullPointerException();
}
if ( source == null ) {
throw new NullPointerException();
}
this.loader = loader;
this.source = source;
}
public long getLength() {
return rawData.getLength();
}
public void readFullyAt( final long position, final byte[] buffer, final int length )
throws IOException {
if ( rawData == null ) {
try {
rawData = loader.load( source );
} catch ( ResourceLoadingException e ) {
throw new IOException( "Failed to load the raw data." );
}
}
final int iPos = (int) ( position & 0x7fffffff );
try {
rawData.getResource( loader, buffer, iPos, length );
} catch ( ResourceLoadingException e ) {
throw new IOException( "Unable to load data: " + e.getMessage() );
}
}
//
// public int readAt(final long position, final byte[] buffer, final int offset, final int length) throws IOException
// {
// if (rawData == null)
// {
// try
// {
// rawData = loader.load(source);
// }
// catch (ResourceLoadingException e)
// {
// throw new IOException("Failed to load the raw data.");
// }
// }
//
// final int iPos = (int) (position & 0x7fffffff);
// final int readLength = Math.min (length, rawData.length - iPos);
// System.arraycopy(rawData, iPos, buffer, offset, readLength);
// return readLength;
// }
public int readAt( final long position ) throws IOException {
if ( rawData == null ) {
try {
rawData = loader.load( source );
} catch ( ResourceLoadingException e ) {
throw new IOException( "Failed to load the raw data." );
}
}
final int iPos = (int) ( position & 0x7fffffff );
final byte[] buffer = new byte[ 1 ];
final long length = rawData.getLength();
if ( ( length > -1 ) && ( iPos >= length ) ) {
return -1;
}
try {
rawData.getResource( loader, buffer, iPos, 1 );
return buffer[ 0 ];
} catch ( IndexOutOfBoundsException e ) {
return -1;
} catch ( ResourceLoadingException e ) {
throw new IOException( "Failed to read stream." );
}
}
public void dispose() {
rawData = null;
}
public String getFileName() {
final Object identifier = source.getIdentifier();
if ( identifier instanceof File ) {
final File f = (File) identifier;
return f.getPath();
}
return null;
}
public boolean equals( final Object o ) {
if ( this == o ) {
return true;
}
if ( o == null || getClass() != o.getClass() ) {
return false;
}
final ResourceFontDataInputSource that = (ResourceFontDataInputSource) o;
if ( !loader.equals( that.loader ) ) {
return false;
}
if ( !source.equals( that.source ) ) {
return false;
}
return true;
}
public int hashCode() {
int result = loader.hashCode();
result = 29 * result + source.hashCode();
return result;
}
}