org.eclipse.viatra2.gui/src/org/eclipse/viatra2/frameworkgui/views/console/commands/builtin/ExecuteCommandScript.java

/*******************************************************************************
 * Copyright (c) 2008-2010, Istvan Rath and Daniel Varro
 * 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:
 *   Istvan Rath - initial API and implementation
 *******************************************************************************/

package org.eclipse.viatra2.frameworkgui.views.console.commands.builtin;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.net.URI;
import java.util.List;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.viatra2.framework.IFramework;
import org.eclipse.viatra2.frameworkgui.views.console.commands.CommandExecutor;
import org.eclipse.viatra2.frameworkgui.views.console.commands.IVIATRAConsoleCommandProvider;
import org.eclipse.viatra2.frameworkgui.views.console.commands.ParsedCommand;

public class ExecuteCommandScript implements IVIATRAConsoleCommandProvider {

	public void executeCommand(IFramework fw, List<String> parameters) {
		try {
			if (parameters.size()>0)
			{
				String pURI = parameters.get(0);

				// get rid of any trailing / and append file:// prefix if necessary
				if (pURI.startsWith("/")) {
					pURI = pURI.substring(1);
				}
				if (!pURI.startsWith("file://")) {
					pURI = "file://"+pURI;
				}
				else {
					// check if there is a surplus / inside
					String _pURI = pURI.substring(7);
					if (_pURI.startsWith("/")) {
						_pURI = _pURI.substring(1);
						pURI = "file://"+_pURI;
					}
				}
				URI uri = new URI(pURI);
		
				String path = uri.getAuthority() + uri.getPath();
				// check whether the path exists
				// if not, create projects
				IFile ifile = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(path));
				IProject p = ResourcesPlugin.getWorkspace().getRoot().getProject(uri.getAuthority());
				IProgressMonitor mon = new NullProgressMonitor();
				try {
					if (!p.exists()) {
						fw.getLogger().error("top-level project "+p.getName()+" does not exist in the workspace");
						return;
					}
					p.open(mon);
				} catch (CoreException cex) {
					throw new IOException("Target project cannot be created/opened");
				}
				// make sure project-relative path exists
				//try {
					String[] segments = uri.getPath().split("/");
					if (segments.length > 2) // first segment is always "" due to path beginning with '/'
					{
						// there is at least one directory below the project
						// root
						IFolder curr = null;
						for (int i = 1; i < segments.length - 1; i++) // last segment will always be the file name
						{
							if (curr == null)
								curr = p.getFolder(segments[i]);
							else
								curr = curr.getFolder(segments[i]);
							if (!curr.exists()) {
								fw.getLogger().error("folder "+curr.getName()+" does not exist");
								return;
								//curr.create(true, true, mon);
							}
						}
					}
//				} catch (CoreException cex) {
//					throw new IOException("Target folder structure cannot be created");
//				}
//				// open reader to the file
				FileReader ret = new FileReader(new File(ifile.getLocation().toOSString()));
				
				fw.getLogger().info("Executing command script from file "+ifile.getLocation().toPortableString());
				BufferedReader br = new BufferedReader(ret);
				while (br.ready()) {
					String cmdLine = br.readLine();
					// try execution
					ParsedCommand cmd = CommandExecutor.getParsedCommand(cmdLine);
					if (cmd.isValid) {
						CommandExecutor.executeCommand(fw, cmd);
					}
				}
				ret.close();
				fw.getLogger().info("Execution finished.");
			}
			} catch (Throwable t) {
				fw.getLogger().printStackTrace(t);
			}
			
	}

	public String getCommandSignature() {
		return "executecommandscript(workspace_relative_path_to_commandscript_file)";
	}

	public String getDescription() {
		return "Executes a VIATRA2 Console command script";
	}

	public String getHelpText() {
		return "This command allows you to put a sequence of commands into a line-separated file, load it from the workspace and execute it as a simple macro.";
	}

}