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- /*
- * Copyright (C) 2011-2012, IBM Corporation and others.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.eclipse.jgit.pgm;
-
- import static org.junit.Assert.assertNull;
-
- import java.io.ByteArrayOutputStream;
- import java.io.File;
- import java.io.IOException;
- import java.io.PrintWriter;
- import java.util.ArrayList;
- import java.util.List;
-
- import org.eclipse.jgit.internal.storage.file.FileRepository;
- import org.eclipse.jgit.lib.Repository;
- import org.eclipse.jgit.pgm.TextBuiltin.TerminatedByHelpException;
- import org.eclipse.jgit.util.IO;
-
- public class CLIGitCommand extends Main {
-
- private final Result result;
-
- private final Repository db;
-
- public CLIGitCommand(Repository db) {
- super();
- this.db = db;
- result = new Result();
- }
-
- /**
- * Executes git commands (with arguments) specified on the command line. The
- * git repository (same for all commands) can be specified via system
- * property "-Dgit_work_tree=path_to_work_tree". If the property is not set,
- * current directory is used.
- *
- * @param args
- * each element in the array must be a valid git command line,
- * e.g. "git branch -h"
- * @throws Exception
- */
- public static void main(String[] args) throws Exception {
- String workDir = System.getProperty("git_work_tree");
- if (workDir == null) {
- workDir = ".";
- System.out.println(
- "System property 'git_work_tree' not specified, using current directory: "
- + new File(workDir).getAbsolutePath());
- }
- try (Repository db = new FileRepository(workDir + "/.git")) {
- for (String cmd : args) {
- List<String> result = execute(cmd, db);
- for (String line : result) {
- System.out.println(line);
- }
- }
- }
- }
-
- public static List<String> execute(String str, Repository db)
- throws Exception {
- Result result = executeRaw(str, db);
- return getOutput(result);
- }
-
- public static Result executeRaw(String str, Repository db)
- throws Exception {
- CLIGitCommand cmd = new CLIGitCommand(db);
- cmd.run(str);
- return cmd.result;
- }
-
- public static List<String> executeUnchecked(String str, Repository db)
- throws Exception {
- CLIGitCommand cmd = new CLIGitCommand(db);
- try {
- cmd.run(str);
- return getOutput(cmd.result);
- } catch (Throwable e) {
- return cmd.result.errLines();
- }
- }
-
- private static List<String> getOutput(Result result) {
- if (result.ex instanceof TerminatedByHelpException) {
- return result.errLines();
- }
- return result.outLines();
- }
-
- private void run(String commandLine) throws Exception {
- String[] argv = convertToMainArgs(commandLine);
- try {
- super.run(argv);
- } catch (TerminatedByHelpException e) {
- // this is not a failure, super called exit() on help
- } finally {
- writer.flush();
- }
- }
-
- private static String[] convertToMainArgs(String str)
- throws Exception {
- String[] args = split(str);
- if (!args[0].equalsIgnoreCase("git") || args.length < 2) {
- throw new IllegalArgumentException(
- "Expected 'git <command> [<args>]', was:" + str);
- }
- String[] argv = new String[args.length - 1];
- System.arraycopy(args, 1, argv, 0, args.length - 1);
- return argv;
- }
-
- @Override
- PrintWriter createErrorWriter() {
- return new PrintWriter(result.err);
- }
-
- void init(final TextBuiltin cmd) throws IOException {
- cmd.outs = result.out;
- cmd.errs = result.err;
- super.init(cmd);
- }
-
- @Override
- protected Repository openGitDir(String aGitdir) throws IOException {
- assertNull(aGitdir);
- return db;
- }
-
- @Override
- void exit(int status, Exception t) throws Exception {
- if (t == null) {
- t = new IllegalStateException(Integer.toString(status));
- }
- result.ex = t;
- throw t;
- }
-
- /**
- * Split a command line into a string array.
- *
- * A copy of Gerrit's
- * com.google.gerrit.sshd.CommandFactoryProvider#split(String)
- *
- * @param commandLine
- * a command line
- * @return the array
- */
- static String[] split(String commandLine) {
- final List<String> list = new ArrayList<String>();
- boolean inquote = false;
- boolean inDblQuote = false;
- StringBuilder r = new StringBuilder();
- for (int ip = 0; ip < commandLine.length();) {
- final char b = commandLine.charAt(ip++);
- switch (b) {
- case '\t':
- case ' ':
- if (inquote || inDblQuote)
- r.append(b);
- else if (r.length() > 0) {
- list.add(r.toString());
- r = new StringBuilder();
- }
- continue;
- case '\"':
- if (inquote)
- r.append(b);
- else
- inDblQuote = !inDblQuote;
- continue;
- case '\'':
- if (inDblQuote)
- r.append(b);
- else
- inquote = !inquote;
- continue;
- case '\\':
- if (inDblQuote || inquote || ip == commandLine.length())
- r.append(b); // literal within a quote
- else
- r.append(commandLine.charAt(ip++));
- continue;
- default:
- r.append(b);
- continue;
- }
- }
- if (r.length() > 0)
- list.add(r.toString());
- return list.toArray(new String[list.size()]);
- }
-
- public static class Result {
- public final ByteArrayOutputStream out = new ByteArrayOutputStream();
-
- public final ByteArrayOutputStream err = new ByteArrayOutputStream();
-
- public Exception ex;
-
- public byte[] outBytes() {
- return out.toByteArray();
- }
-
- public byte[] errBytes() {
- return err.toByteArray();
- }
-
- public String outString() {
- return out.toString();
- }
-
- public List<String> outLines() {
- return IO.readLines(out.toString());
- }
-
- public String errString() {
- return err.toString();
- }
-
- public List<String> errLines() {
- return IO.readLines(err.toString());
- }
- }
-
- }
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