| /******************************************************************************* |
| * Copyright (c) 2009, 2017 Red Hat Inc. 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: |
| * Alexander Kurtakov - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.sh.internal.ui.selection; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.dltk.core.IMember; |
| import org.eclipse.dltk.ui.documentation.IScriptDocumentationProvider; |
| import org.eclipse.linuxtools.man.parser.ManPage; |
| |
| public class ShellDocumentationProvider implements IScriptDocumentationProvider { |
| |
| @Override |
| public Reader getInfo(String content) { |
| String helpInfo = getHelp(content); |
| if (!helpInfo.isEmpty()) { |
| return new StringReader("<pre>" + helpInfo + "</pre>"); |
| } |
| String info = new ManPage(content).getStrippedHtmlPage().toString(); |
| if (info.equals("<pre></pre>")) { |
| return null; |
| } |
| return new StringReader(info); |
| } |
| |
| private static String getHelp(String command) { |
| List<String> commands = new ArrayList<>(); |
| commands.add("bash"); |
| commands.add("-c"); |
| commands.add("help " + command); |
| ProcessBuilder process = new ProcessBuilder(commands); |
| final StringBuilder out = new StringBuilder(); |
| try (InputStream stream = process.start().getInputStream()) { |
| final char[] buffer = new char[1024]; |
| try (Reader in = new InputStreamReader(stream)) { |
| for (;;) { |
| int rsz = in.read(buffer, 0, buffer.length); |
| if (rsz < 0) { |
| break; |
| } |
| out.append(buffer, 0, rsz); |
| } |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| return out.toString(); |
| } |
| |
| @Override |
| public Reader getInfo(IMember element, boolean lookIntoParents, boolean lookIntoExternal) { |
| // TODO show comments for functions if there is any |
| return null; |
| } |
| |
| } |