FileUtils.java revision 40bb73886c61d4b2e96bab98b50c1cbfcb54d9a3 
1/*
2 * Copyright 2010 Google Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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 */
16package com.google.android.testing.mocking;
17
18import java.io.File;
19import java.io.FileNotFoundException;
20import java.io.FileOutputStream;
21import java.io.IOException;
22
23/**
24 * @author swoodward@google.com (Stephen Woodward)
25 */
26public class FileUtils {
27
28  /**
29   * @param clazz
30   * @param sdkVersion
31   * @return the appropriate interface name for the interface mock support file.
32   */
33  static String getInterfaceNameFor(Class<?> clazz, SdkVersion sdkVersion) {
34    return sdkVersion.getPackagePrefix() + "genmocks." + clazz.getName() + "DelegateInterface";
35  }
36  /**
37   * @param clazz
38   * @param sdkVersion
39   * @return the appropriate subclass name for the subclass mock support file.
40   */
41  static String getSubclassNameFor(Class<?> clazz, SdkVersion sdkVersion) {
42    return sdkVersion.getPackagePrefix() + "genmocks." + clazz.getName() + "DelegateSubclass";
43  }
44
45  /**
46   * Converts a class name into the a .class filename.
47   *
48   * @param className
49   * @return the file name for the specified class name.
50   */
51  static String getFilenameFor(String className) {
52    return className.replace('.', File.separatorChar) + ".class";
53  }
54
55  /**
56   * Converts a filename into a class name.
57   *
58   * @param filename
59   * @return the class name for the specified file name.
60   */
61  static String getClassNameFor(String filename) {
62    if (!filename.endsWith(".class")) {
63      throw new IllegalArgumentException("Argument provided is not a class filename: " + filename);
64    }
65    // On non-Linux, files use the native separator, but jar entries use /... sigh
66    return filename.replace(File.separatorChar, '.').replace('/', '.')
67        .substring(0, filename.length() - 6);
68  }
69
70  static void saveClassToFolder(GeneratedClassFile clazz, String outputFolderName)
71      throws FileNotFoundException, IOException {
72    File classFolder = new File(outputFolderName);
73    File targetFile = new File(classFolder, getFilenameFor(clazz.getClassName()));
74    targetFile.getParentFile().mkdirs();
75    FileOutputStream outputStream = new FileOutputStream(targetFile);
76    outputStream.write(clazz.getContents());
77    outputStream.close();
78  }
79}
80