tikhomirov@61: /*
tikhomirov@66:  * Copyright (c) 2011 TMate Software Ltd
tikhomirov@66:  *  
tikhomirov@66:  * This program is free software; you can redistribute it and/or modify
tikhomirov@66:  * it under the terms of the GNU General Public License as published by
tikhomirov@66:  * the Free Software Foundation; version 2 of the License.
tikhomirov@66:  *
tikhomirov@66:  * This program is distributed in the hope that it will be useful,
tikhomirov@66:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@66:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@66:  * GNU General Public License for more details.
tikhomirov@66:  *
tikhomirov@66:  * For information on how to redistribute this software under
tikhomirov@66:  * the terms of a license other than GNU General Public License
tikhomirov@102:  * contact TMate Software at support@hg4j.com
tikhomirov@61:  */
tikhomirov@66: package org.tmatesoft.hg.test;
tikhomirov@61: 
tikhomirov@61: import java.io.File;
tikhomirov@61: import java.io.IOException;
tikhomirov@61: import java.io.InputStreamReader;
tikhomirov@61: import java.nio.CharBuffer;
tikhomirov@110: import java.util.ArrayList;
tikhomirov@110: import java.util.Arrays;
tikhomirov@61: import java.util.LinkedList;
tikhomirov@110: import java.util.StringTokenizer;
tikhomirov@61: 
tikhomirov@61: /**
tikhomirov@61:  *
tikhomirov@66:  * @author Artem Tikhomirov
tikhomirov@66:  * @author TMate Software Ltd.
tikhomirov@61:  */
tikhomirov@61: public class ExecHelper {
tikhomirov@61: 
tikhomirov@61: 	private final OutputParser parser;
tikhomirov@203: 	private File dir;
tikhomirov@201: 	private int exitValue;
tikhomirov@61: 
tikhomirov@61: 	public ExecHelper(OutputParser outParser, File workingDir) {
tikhomirov@61: 		parser = outParser;
tikhomirov@61: 		dir = workingDir;
tikhomirov@61: 	}
tikhomirov@61: 
tikhomirov@61: 	public void run(String... cmd) throws IOException, InterruptedException {
tikhomirov@110: 		ProcessBuilder pb = null;
tikhomirov@110: 		if (System.getProperty("os.name").startsWith("Windows")) {
tikhomirov@110: 			StringTokenizer st = new StringTokenizer(System.getenv("PATH"), ";");
tikhomirov@110: 			while (st.hasMoreTokens()) {
tikhomirov@110: 				File pe = new File(st.nextToken());
tikhomirov@110: 				if (new File(pe, cmd[0] + ".exe").exists()) {
tikhomirov@110: 					break;
tikhomirov@110: 				}
tikhomirov@111: 				// PATHEXT controls precedence of .exe, .bat and .cmd files, ususlly .exe wins
tikhomirov@110: 				if (new File(pe, cmd[0] + ".bat").exists() || new File(pe, cmd[0] + ".cmd").exists()) {
tikhomirov@110: 					ArrayList<String> command = new ArrayList<String>();
tikhomirov@110: 					command.add("cmd.exe");
tikhomirov@110: 					command.add("/C");
tikhomirov@110: 					command.addAll(Arrays.asList(cmd));
tikhomirov@110: 					pb = new ProcessBuilder(command);
tikhomirov@110: 					break;
tikhomirov@110: 				}
tikhomirov@110: 			}
tikhomirov@110: 		}
tikhomirov@110: 		if (pb == null) {
tikhomirov@110: 			pb = new ProcessBuilder(cmd);
tikhomirov@110: 		}
tikhomirov@110: 		Process p = pb.directory(dir).redirectErrorStream(true).start();
tikhomirov@61: 		InputStreamReader stdOut = new InputStreamReader(p.getInputStream());
tikhomirov@61: 		LinkedList<CharBuffer> l = new LinkedList<CharBuffer>();
tikhomirov@61: 		int r = -1;
tikhomirov@61: 		CharBuffer b = null;
tikhomirov@61: 		do {
tikhomirov@61: 			if (b == null || b.remaining() < b.capacity() / 3) {
tikhomirov@61: 				b = CharBuffer.allocate(512);
tikhomirov@61: 				l.add(b);
tikhomirov@61: 			}
tikhomirov@61: 			r = stdOut.read(b);
tikhomirov@61: 		} while (r != -1);
tikhomirov@61: 		int total = 0;
tikhomirov@61: 		for (CharBuffer cb : l) {
tikhomirov@61: 			total += cb.position();
tikhomirov@61: 			cb.flip();
tikhomirov@61: 		}
tikhomirov@61: 		CharBuffer res = CharBuffer.allocate(total);
tikhomirov@61: 		for (CharBuffer cb : l) {
tikhomirov@61: 			res.put(cb);
tikhomirov@61: 		}
tikhomirov@61: 		res.flip();
tikhomirov@61: 		p.waitFor();
tikhomirov@201: 		exitValue = p.exitValue();
tikhomirov@61: 		parser.parse(res);
tikhomirov@61: 	}
tikhomirov@201: 	
tikhomirov@201: 	public int getExitValue() {
tikhomirov@201: 		return exitValue;
tikhomirov@201: 	}
tikhomirov@203: 
tikhomirov@203: 	public void cwd(File wd) {
tikhomirov@203: 		dir = wd;
tikhomirov@203: 	}
tikhomirov@61: }