| /* |
| * Copyright (C) 2009-2010, Google Inc. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.util.io; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| |
| import org.eclipse.jgit.util.RawParseUtils; |
| |
| /** |
| * Combines messages from an OutputStream (hopefully in UTF-8) and a Writer. |
| * <p> |
| * This class is primarily meant for {@code BaseConnection} in contexts where a |
| * standard error stream from a command execution, as well as messages from a |
| * side-band channel, need to be combined together into a buffer to represent |
| * the complete set of messages from a remote repository. |
| * <p> |
| * Writes made to the writer are re-encoded as UTF-8 and interleaved into the |
| * buffer that {@link #getRawStream()} also writes to. |
| * <p> |
| * {@link #toString()} returns all written data, after converting it to a String |
| * under the assumption of UTF-8 encoding. |
| * <p> |
| * Internally {@link org.eclipse.jgit.util.RawParseUtils#decode(byte[])} is used |
| * by {@code toString()} tries to work out a reasonably correct character set |
| * for the raw data. |
| */ |
| public class MessageWriter extends Writer { |
| private final ByteArrayOutputStream buf; |
| |
| private final OutputStreamWriter enc; |
| |
| /** |
| * Create an empty writer. |
| */ |
| public MessageWriter() { |
| buf = new ByteArrayOutputStream(); |
| enc = new OutputStreamWriter(getRawStream(), UTF_8); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void write(char[] cbuf, int off, int len) throws IOException { |
| synchronized (buf) { |
| enc.write(cbuf, off, len); |
| enc.flush(); |
| } |
| } |
| |
| /** |
| * Get the underlying byte stream that character writes to this writer drop |
| * into. |
| * |
| * @return the underlying byte stream that character writes to this writer |
| * drop into. Writes to this stream should should be in UTF-8. |
| */ |
| public OutputStream getRawStream() { |
| return buf; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void close() throws IOException { |
| // Do nothing, we are buffered with no resources. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void flush() throws IOException { |
| // Do nothing, we are buffered with no resources. |
| } |
| |
| /** @return string version of all buffered data. */ |
| /** {@inheritDoc} */ |
| @Override |
| public String toString() { |
| return RawParseUtils.decode(buf.toByteArray()); |
| } |
| } |