1 /* 2 * Copyright (C) 2007 The Android Open Source Project 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 */ 16 17 package com.android.dx.command; 18 19 import com.android.dx.Version; 20 21 /** 22 * Main class for dx. It recognizes enough options to be able to dispatch 23 * to the right "actual" main. 24 */ 25 public class Main { 26 private static String USAGE_MESSAGE = 27 "usage:\n" + 28 " dx --dex [--debug] [--verbose] [--positions=<style>] " + 29 "[--no-locals]\n" + 30 " [--no-optimize] [--statistics] [--[no-]optimize-list=<file>] " + 31 "[--no-strict]\n" + 32 " [--keep-classes] [--output=<file>] [--dump-to=<file>] " + 33 "[--dump-width=<n>]\n" + 34 " [--dump-method=<name>[*]] [--verbose-dump] [--no-files] " + 35 "[--core-library]\n" + 36 " [--num-threads=<n>] [--incremental] [--force-jumbo]\n" + 37 " [--multi-dex [--main-dex-list=<file> [--minimal-main-dex]]\n" + 38 " [<file>.class | <file>.{zip,jar,apk} | <directory>] ...\n" + 39 " Convert a set of classfiles into a dex file, optionally " + 40 "embedded in a\n" + 41 " jar/zip. Output name must end with one of: .dex .jar " + 42 ".zip .apk or be a directory.\n" + 43 " Positions options: none, important, lines.\n" + 44 " --multi-dex: allows to generate several dex files if needed. " + 45 "This option is \n" + 46 " exclusive with --incremental, causes --num-threads to be ignored " + 47 "and only\n" + 48 " supports folder or archive output.\n" + 49 " --main-dex-list=<file>: <file> is a list of class file names, " + 50 "classes defined by\n" + 51 " those class files are put in classes.dex.\n" + 52 " --minimal-main-dex: only classes selected by --main-dex-list are " + 53 "to be put in\n" + 54 " the main dex.\n" + 55 " dx --annotool --annotation=<class> [--element=<element types>]\n" + 56 " [--print=<print types>]\n" + 57 " dx --dump [--debug] [--strict] [--bytes] [--optimize]\n" + 58 " [--basic-blocks | --rop-blocks | --ssa-blocks | --dot] " + 59 "[--ssa-step=<step>]\n" + 60 " [--width=<n>] [<file>.class | <file>.txt] ...\n" + 61 " Dump classfiles, or transformations thereof, in a " + 62 "human-oriented format.\n" + 63 " dx --find-usages <file.dex> <declaring type> <member>\n" + 64 " Find references and declarations to a field or method.\n" + 65 " declaring type: a class name in internal form, like " + 66 "Ljava/lang/Object;\n" + 67 " member: a field or method name, like hashCode\n" + 68 " dx -J<option> ... <arguments, in one of the above " + 69 "forms>\n" + 70 " Pass VM-specific options to the virtual machine that " + 71 "runs dx.\n" + 72 " dx --version\n" + 73 " Print the version of this tool (" + Version.VERSION + 74 ").\n" + 75 " dx --help\n" + 76 " Print this message."; 77 78 /** 79 * This class is uninstantiable. 80 */ 81 private Main() { 82 // This space intentionally left blank. 83 } 84 85 /** 86 * Run! 87 */ 88 public static void main(String[] args) { 89 boolean gotCmd = false; 90 boolean showUsage = false; 91 92 try { 93 for (int i = 0; i < args.length; i++) { 94 String arg = args[i]; 95 if (arg.equals("--") || !arg.startsWith("--")) { 96 gotCmd = false; 97 showUsage = true; 98 break; 99 } 100 101 gotCmd = true; 102 if (arg.equals("--dex")) { 103 com.android.dx.command.dexer.Main.main(without(args, i)); 104 break; 105 } else if (arg.equals("--dump")) { 106 com.android.dx.command.dump.Main.main(without(args, i)); 107 break; 108 } else if (arg.equals("--annotool")) { 109 com.android.dx.command.annotool.Main.main( 110 without(args, i)); 111 break; 112 } else if (arg.equals("--find-usages")) { 113 com.android.dx.command.findusages.Main.main(without(args, i)); 114 break; 115 } else if (arg.equals("--version")) { 116 version(); 117 break; 118 } else if (arg.equals("--help")) { 119 showUsage = true; 120 break; 121 } else { 122 gotCmd = false; 123 } 124 } 125 } catch (UsageException ex) { 126 showUsage = true; 127 } catch (RuntimeException ex) { 128 System.err.println("\nUNEXPECTED TOP-LEVEL EXCEPTION:"); 129 ex.printStackTrace(); 130 System.exit(2); 131 } catch (Throwable ex) { 132 System.err.println("\nUNEXPECTED TOP-LEVEL ERROR:"); 133 ex.printStackTrace(); 134 if ((ex instanceof NoClassDefFoundError) 135 || (ex instanceof NoSuchMethodError)) { 136 System.err.println( 137 "Note: You may be using an incompatible " + 138 "virtual machine or class library.\n" + 139 "(This program is known to be incompatible " + 140 "with recent releases of GCJ.)"); 141 } 142 System.exit(3); 143 } 144 145 if (!gotCmd) { 146 System.err.println("error: no command specified"); 147 showUsage = true; 148 } 149 150 if (showUsage) { 151 usage(); 152 System.exit(1); 153 } 154 } 155 156 /** 157 * Prints the version message. 158 */ 159 private static void version() { 160 System.err.println("dx version " + Version.VERSION); 161 System.exit(0); 162 } 163 164 /** 165 * Prints the usage message. 166 */ 167 private static void usage() { 168 System.err.println(USAGE_MESSAGE); 169 } 170 171 /** 172 * Returns a copy of the given args array, but without the indicated 173 * element. 174 * 175 * @param orig {@code non-null;} original array 176 * @param n which element to omit 177 * @return {@code non-null;} new array 178 */ 179 private static String[] without(String[] orig, int n) { 180 int len = orig.length - 1; 181 String[] newa = new String[len]; 182 System.arraycopy(orig, 0, newa, 0, n); 183 System.arraycopy(orig, n + 1, newa, n, len - n); 184 return newa; 185 } 186 } 187
