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/*
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.
* 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.releng.wingit;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.swt.widgets.Shell;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
/**
* @author Eike Stepper
*/
public class WinGit
{
private static final String GIT_BASH = "C:\\Program Files (x86)\\Git\\bin\\sh.exe";
private static String gitBash;
public WinGit()
{
}
public static synchronized String getGitBash(Shell shell)
{
if (gitBash == null)
{
File stateFile = Activator.getDefault().getStateLocation().append("git-bash.txt").toFile();
if (stateFile.isFile())
{
gitBash = loadFile(stateFile);
}
if (gitBash == null)
{
gitBash = getPath(GIT_BASH, shell);
}
if (!new File(gitBash).isFile())
{
gitBash = getPath(gitBash, shell);
}
saveFile(stateFile, gitBash);
}
return gitBash;
}
private static String getPath(String initial, Shell shell)
{
InputDialog dialog = new InputDialog(shell, "Git Bash", "Location:", initial, new IInputValidator()
{
public String isValid(String newText)
{
return new File(newText).isFile() ? null : "Not a file!";
}
});
if (dialog.open() != InputDialog.OK)
{
throw new IllegalStateException("Git bash not found at " + gitBash);
}
return dialog.getValue();
}
private static String loadFile(File file)
{
FileReader in = null;
try
{
in = new FileReader(file);
return new BufferedReader(in).readLine();
}
catch (IOException ex)
{
return null;
}
finally
{
if (in != null)
{
try
{
in.close();
}
catch (IOException ex)
{
// Ignore
}
}
}
}
private static void saveFile(File file, String content)
{
FileWriter out = null;
try
{
out = new FileWriter(file);
out.write(content);
}
catch (IOException ex)
{
throw new IllegalStateException("Could not write to " + file, ex);
}
finally
{
if (out != null)
{
try
{
out.close();
}
catch (IOException ex)
{
// Ignore
}
}
}
}
}
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