/*
* ====================================================================
* Copyright (c) 2004-2009 TMate Software Ltd. All rights reserved.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://svnkit.com/license.html
* If newer versions of this license are posted there, you may use a
* newer version instead, at your option.
* ====================================================================
*/
package org.tmatesoft.svn.core.internal.wc.admin;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.util.Map;
import org.tmatesoft.svn.core.SVNException;
import org.tmatesoft.svn.core.internal.wc.IOExceptionWrapper;
import org.tmatesoft.svn.core.internal.wc.SVNSubstitutor;
/**
* @version 1.3
* @author TMate Software Ltd.
*/
public class SVNTranslatorInputStream extends InputStream {
private InputStream mySource;
private ByteBuffer myTranslatedBuffer;
private SVNSubstitutor mySubstitutor;
private byte[] mySourceBuffer;
public SVNTranslatorInputStream(InputStream source, byte[] eols, boolean repair, Map keywords, boolean expand) {
mySource = source;
mySubstitutor = new SVNSubstitutor(eols, repair, keywords, expand);
myTranslatedBuffer = ByteBuffer.allocate(2048);
mySourceBuffer = new byte[2048];
}
public int read() throws IOException {
byte[] b = new byte[1];
int r = read(b);
if (r <= 0) {
return -1;
}
return b[0] & 0xFF;
}
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
public int read(byte[] b, int off, int len) throws IOException {
boolean isEOF = false;
int available = myTranslatedBuffer.position();
while(available < len) {
int read = mySource.read(mySourceBuffer, 0, mySourceBuffer.length);
if (read < 0) {
isEOF = true;
try {
myTranslatedBuffer = mySubstitutor.translateChunk(null, myTranslatedBuffer);
} catch (SVNException svne) {
IOExceptionWrapper wrappedException = new IOExceptionWrapper(svne);
throw wrappedException;
}
break;
}
try {
myTranslatedBuffer = mySubstitutor.translateChunk(ByteBuffer.wrap(mySourceBuffer, 0, read), myTranslatedBuffer);
} catch (SVNException svne) {
IOExceptionWrapper wrappedException = new IOExceptionWrapper(svne);
throw wrappedException;
}
available = myTranslatedBuffer.position();
}
myTranslatedBuffer.flip();
len = Math.min(myTranslatedBuffer.remaining(), len);
myTranslatedBuffer.get(b, off, len);
myTranslatedBuffer.compact();
if (isEOF && len == 0) {
return -1;
}
return len;
}
public void close() throws IOException {
mySource.close();
}
}