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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.ide.eclipse.ndk.internal.build;
     18 
     19 import com.android.ide.eclipse.adt.AdtPlugin;
     20 import com.android.ide.eclipse.ndk.internal.NdkManager;
     21 
     22 import org.eclipse.cdt.core.CommandLauncher;
     23 import org.eclipse.cdt.utils.CygPath;
     24 import org.eclipse.core.runtime.CoreException;
     25 import org.eclipse.core.runtime.IPath;
     26 import org.eclipse.core.runtime.IProgressMonitor;
     27 import org.eclipse.core.runtime.Path;
     28 import org.eclipse.core.runtime.Platform;
     29 
     30 import java.io.File;
     31 import java.io.IOException;
     32 import java.util.Arrays;
     33 import java.util.List;
     34 
     35 @SuppressWarnings("restriction") // for AdtPlugin internal classes
     36 public class NdkCommandLauncher extends CommandLauncher {
     37     private static CygPath sCygPath = null;
     38 
     39     private static final List<String> WINDOWS_NATIVE_EXECUTABLES = Arrays.asList(
     40             "exe",      //$NON-NLS-1$
     41             "cmd",      //$NON-NLS-1$
     42             "bat"       //$NON-NLS-1$
     43             );
     44 
     45     static {
     46         if (Platform.OS_WIN32.equals(Platform.getOS())) {
     47             try {
     48                 sCygPath = new CygPath();
     49             } catch (IOException e) {
     50                 AdtPlugin.printErrorToConsole("Unable to launch cygpath. Is Cygwin on the path?",
     51                         e);
     52             }
     53         }
     54     }
     55 
     56     @Override
     57     public Process execute(IPath commandPath, String[] args, String[] env, IPath changeToDirectory,
     58             IProgressMonitor monitor)
     59             throws CoreException {
     60         if (!commandPath.isAbsolute())
     61             commandPath = new Path(NdkManager.getNdkLocation()).append(commandPath);
     62 
     63         if (Platform.getOS().equals(Platform.OS_WIN32)) {
     64             // convert cygwin paths to standard paths
     65             if (sCygPath != null && commandPath.toString().startsWith("/cygdrive")) { //$NON-NLS-1$
     66                 try {
     67                     String path = sCygPath.getFileName(commandPath.toString());
     68                     commandPath = new Path(path);
     69                 } catch (IOException e) {
     70                     AdtPlugin.printErrorToConsole(
     71                             "Unexpected error while transforming cygwin path.", e);
     72                 }
     73             }
     74 
     75             if (isWindowsExecutable(commandPath)) {
     76                 // append necessary extension
     77                 commandPath = appendExecutableExtension(commandPath);
     78             } else {
     79                 // Invoke using Cygwin shell if this is not a native windows executable
     80                 String[] newargs = new String[args.length + 1];
     81                 newargs[0] = commandPath.toOSString();
     82                 System.arraycopy(args, 0, newargs, 1, args.length);
     83 
     84                 commandPath = new Path("sh"); //$NON-NLS-1$
     85                 args = newargs;
     86             }
     87         }
     88 
     89         return super.execute(commandPath, args, env, changeToDirectory, monitor);
     90     }
     91 
     92     private boolean isWindowsExecutable(IPath commandPath) {
     93         String ext = commandPath.getFileExtension();
     94         if (isWindowsExecutableExtension(ext)) {
     95             return true;
     96         }
     97 
     98         ext = findWindowsExecutableExtension(commandPath);
     99         if (ext != null) {
    100             return true;
    101         }
    102 
    103         return false;
    104     }
    105 
    106     private IPath appendExecutableExtension(IPath commandPath) {
    107         if (isWindowsExecutableExtension(commandPath.getFileExtension())) {
    108             return commandPath;
    109         }
    110 
    111         String ext = findWindowsExecutableExtension(commandPath);
    112         if (ext != null) {
    113             return commandPath.addFileExtension(ext);
    114         }
    115 
    116         return commandPath;
    117     }
    118 
    119     private String findWindowsExecutableExtension(IPath command) {
    120         for (String e: WINDOWS_NATIVE_EXECUTABLES) {
    121             File exeFile = command.addFileExtension(e).toFile();
    122             if (exeFile.exists()) {
    123                 return e;
    124             }
    125         }
    126 
    127         return null;
    128     }
    129 
    130     private boolean isWindowsExecutableExtension(String extension) {
    131         return extension != null && WINDOWS_NATIVE_EXECUTABLES.contains(extension);
    132     }
    133 }
    134