/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* See LICENSE.txt included in this distribution for the specific
* language governing permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at LICENSE.txt.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
package org.opensolaris.opengrok.history;
import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.jrcs.diff.PatchFailedException;
import org.apache.commons.jrcs.rcs.Archive;
import org.apache.commons.jrcs.rcs.InvalidFileFormatException;
import org.apache.commons.jrcs.rcs.NodeNotFoundException;
import org.apache.commons.jrcs.rcs.ParseException;
import org.opensolaris.opengrok.util.IOUtils;
/**
* Virtualise RCS log as an input stream
*/
public class RCSget extends InputStream {
private InputStream stream;
/**
* Pass null in version to get current revision
*/
public RCSget(String file, String version) throws IOException, FileNotFoundException {
try {
Archive archive = new Archive(file);
Object[] lines;
if (version == null) {
lines = archive.getRevision(false);
} else {
lines = archive.getRevision(version, false);
}
StringBuilder sb = new StringBuilder();
for (int ii = 0; ii < lines.length; ++ii) {
sb.append((String)lines[ii]);
sb.append("\n");
}
stream = new ByteArrayInputStream(sb.toString().getBytes());
} catch (ParseException e) {
throw RCSRepository.wrapInIOException("Parse error", e);
} catch (InvalidFileFormatException e) {
throw RCSRepository.wrapInIOException("Invalid RCS file format", e);
} catch (PatchFailedException e) {
throw RCSRepository.wrapInIOException("Patch failed", e);
} catch (NodeNotFoundException e) {
throw RCSRepository.wrapInIOException(
"Revision " + version + " not found", e);
}
}
@Override
public void reset() throws IOException {
stream.reset();
}
@Override
public void close() throws IOException {
IOUtils.close(stream);
}
@Override
public void mark(int readlimit) {
stream.mark(readlimit);
}
@Override
public int read(byte[] buffer, int pos, int len) throws IOException {
return stream.read(buffer, pos, len);
}
@Override
public int read() throws IOException {
throw new IOException("use a BufferedInputStream. just read() is not supported!");
}
}