| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sshd.git; |
| |
| import java.io.OutputStream; |
| import java.nio.file.FileSystem; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import org.apache.sshd.common.channel.ChannelOutputStream; |
| import org.apache.sshd.common.util.threads.CloseableExecutorService; |
| import org.apache.sshd.server.command.AbstractFileSystemCommand; |
| |
| /** |
| * Provides basic support for GIT command implementations |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public abstract class AbstractGitCommand |
| extends AbstractFileSystemCommand |
| implements GitLocationResolverCarrier { |
| public static final int CHAR = 0x001; |
| public static final int DELIMITER = 0x002; |
| public static final int STARTQUOTE = 0x004; |
| public static final int ENDQUOTE = 0x008; |
| |
| protected final GitLocationResolver rootDirResolver; |
| protected FileSystem fileSystem; |
| |
| protected AbstractGitCommand( |
| GitLocationResolver rootDirResolver, String command, |
| CloseableExecutorService executorService) { |
| super(command, executorService); |
| this.rootDirResolver = Objects.requireNonNull(rootDirResolver, "No GIT root directory resolver provided"); |
| } |
| |
| @Override |
| public GitLocationResolver getGitLocationResolver() { |
| return rootDirResolver; |
| } |
| |
| @Override |
| public void setOutputStream(OutputStream out) { |
| super.setOutputStream(out); |
| if (out instanceof ChannelOutputStream) { |
| ((ChannelOutputStream) out).setNoDelay(true); |
| } |
| } |
| |
| @Override |
| public void setErrorStream(OutputStream err) { |
| super.setErrorStream(err); |
| if (err instanceof ChannelOutputStream) { |
| ((ChannelOutputStream) err).setNoDelay(true); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + "[session=" + getServerSession() + "]"; |
| } |
| |
| /** |
| * Parses delimited string and returns an array containing the tokens. This parser obeys quotes, so the delimiter |
| * character will be ignored if it is inside of a quote. This method assumes that the quote character is not |
| * included in the set of delimiter characters. |
| * |
| * @param value the delimited string to parse. |
| * @param delim the characters delimiting the tokens. |
| * @param trim {@code true} if the strings are trimmed before being added to the list |
| * @return a list of string or an empty list if there are none. |
| */ |
| public static List<String> parseDelimitedString(String value, String delim, boolean trim) { |
| if (value == null) { |
| value = ""; |
| } |
| |
| List<String> list = new ArrayList<>(); |
| StringBuilder sb = new StringBuilder(); |
| int expecting = CHAR | DELIMITER | STARTQUOTE; |
| boolean isEscaped = false; |
| for (int i = 0; i < value.length(); i++) { |
| char c = value.charAt(i); |
| boolean isDelimiter = delim.indexOf(c) >= 0; |
| if (!isEscaped && (c == '\\')) { |
| isEscaped = true; |
| continue; |
| } |
| |
| if (isEscaped) { |
| sb.append(c); |
| } else if (isDelimiter && ((expecting & DELIMITER) != 0)) { |
| if (trim) { |
| String str = sb.toString(); |
| list.add(str.trim()); |
| } else { |
| list.add(sb.toString()); |
| } |
| sb.delete(0, sb.length()); |
| expecting = CHAR | DELIMITER | STARTQUOTE; |
| } else if ((c == '"') && ((expecting & STARTQUOTE) != 0)) { |
| sb.append(c); |
| expecting = CHAR | ENDQUOTE; |
| } else if ((c == '"') && ((expecting & ENDQUOTE) != 0)) { |
| sb.append(c); |
| expecting = CHAR | STARTQUOTE | DELIMITER; |
| } else if ((expecting & CHAR) != 0) { |
| sb.append(c); |
| } else { |
| throw new IllegalArgumentException("Invalid delimited string: " + value); |
| } |
| |
| isEscaped = false; |
| } |
| |
| if (sb.length() > 0) { |
| if (trim) { |
| String str = sb.toString(); |
| list.add(str.trim()); |
| } else { |
| list.add(sb.toString()); |
| } |
| } |
| |
| return list; |
| } |
| } |