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/*****************************************************************************
* Copyright (c) 2013 Ken Gilmer, Intel Corporation
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Ken Gilmer - initial API and implementation
* Ioana Grigoropol (Intel) - adapt class for remote support
*******************************************************************************/
package org.yocto.bc.bitbake;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Writer;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.rse.core.model.IHost;
import org.eclipse.rse.services.files.IHostFile;
import org.yocto.bc.ui.model.ProjectInfo;
import org.yocto.remote.utils.ICommandResponseHandler;
import org.yocto.remote.utils.RemoteHelper;
import org.yocto.remote.utils.YoctoCommand;
/**
* A class for Linux shell sessions.
* @author kgilmer
*
*/
public class ShellSession {
private volatile boolean interrupt = false;
/**
* String used to isolate command execution
*/
public static final String TERMINATOR = "#234o987dsfkcqiuwey18837032843259d";
public static final String LT = System.getProperty("line.separator");
public static final String exportCmd = "export BB_ENV_EXTRAWHITE=\\\"DISABLE_SANITY_CHECKS $BB_ENV_EXTRAWHITE\\\"";
public static final String exportColumnsCmd = "export COLUMNS=1000";
private static final String BUILD_DIR = "/build/";
public static String getFilePath(String file) throws IOException {
File f = new File(file);
if (!f.exists() || f.isDirectory()) {
throw new IOException("Path passed is not a file: " + file);
}
StringBuffer sb = new StringBuffer();
String elems[] = file.split("//");
for (int i = 0; i < elems.length - 1; ++i) {
sb.append(elems[i]);
sb.append("//");
}
return sb.toString();
}
private Process process;
private OutputStream pos = null;
private String shellPath = null;
private final String initCmd;
private final IHostFile root;
private ProjectInfo projectInfo;
public ProjectInfo getProjectInfo() {
return projectInfo;
}
public void setProjectInfo(ProjectInfo projectInfo) {
this.projectInfo = projectInfo;
}
public ShellSession(ProjectInfo pInfo, IHostFile root, String initCmd) throws IOException {
this.projectInfo = pInfo;
this.root = root;
this.initCmd = initCmd;
initializeShell(new NullProgressMonitor());
}
private void initializeShell(IProgressMonitor monitor) throws IOException {
try {
if (root != null) {
IHost connection = projectInfo.getConnection();
RemoteHelper.handleRunCommandRemote(connection, new YoctoCommand("source " + initCmd, root.getAbsolutePath(), ""), monitor);
RemoteHelper.handleRunCommandRemote(connection, new YoctoCommand(exportCmd, root.getAbsolutePath(), ""), monitor);
} else {
throw new Exception("Root file not found!");
}
} catch (Exception e) {
e.printStackTrace();
}
}
synchronized
public String execute(String command) throws IOException {
return execute(command, false);
}
synchronized
public String execute(String command, boolean hasErrors) throws IOException {
try {
if (projectInfo.getConnection() != null) {
command = getInitCmd() + command;
RemoteHelper.handleRunCommandRemote(projectInfo.getConnection(), new YoctoCommand(command, getBuildDirAbsolutePath(), ""), new NullProgressMonitor());
return getBuildDirAbsolutePath();
}
return null;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private String getBuildDirAbsolutePath() {
return root.getAbsolutePath() + BUILD_DIR;
}
private String getInitCmd() {
return "source " + initCmd + " " + getBuildDirAbsolutePath()
+ " > tempsf; rm -rf tempsf;" + exportCmd + ";"
+ exportColumnsCmd + ";" + "cd " + getBuildDirAbsolutePath()
+ ";";
}
synchronized
public void execute(String command, String terminator, ICommandResponseHandler handler) throws IOException {
interrupt = false;
InputStream errIs = process.getErrorStream();
if (errIs.available() > 0) {
clearErrorStream(errIs);
}
sendToProcessAndTerminate(command);
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
String std = null;
do {
if (errIs.available() > 0) {
byte[] msg = new byte[errIs.available()];
errIs.read(msg, 0, msg.length);
handler.response(new String(msg), true);
}
std = br.readLine();
if (std != null && !std.endsWith(terminator)) {
handler.response(std, false);
}
} while (std != null && !std.endsWith(terminator) && !interrupt);
if (interrupt) {
process.destroy();
initializeShell(null);
interrupt = false;
}
}
private void clearErrorStream(InputStream is) {
try {
byte b[] = new byte[is.available()];
is.read(b);
System.out.println("clearing: " + new String(b));
} catch (IOException e) {
e.printStackTrace();
//Ignore any error
}
}
/**
* Send command string to shell process and add special terminator string so
* reader knows when output is complete.
*
* @param command
* @throws IOException
*/
private void sendToProcessAndTerminate(String command) throws IOException {
pos.write(command.getBytes());
pos.write(LT.getBytes());
pos.flush();
pos.write("echo $?".getBytes());
pos.write(TERMINATOR.getBytes());
pos.write(LT.getBytes());
pos.flush();
}
/**
* Interrupt any running processes.
*/
public void interrupt() {
interrupt = true;
}
public void printError(String errorLines) {
RemoteHelper.getCommandHandler(projectInfo.getConnection()).response(errorLines, true);
}
}
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