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 " [--input-list=<file>]\n" + 39 " [<file>.class | <file>.{zip,jar,apk} | <directory>] ...\n" + 40 " Convert a set of classfiles into a dex file, optionally " + 41 "embedded in a\n" + 42 " jar/zip. Output name must end with one of: .dex .jar " + 43 ".zip .apk or be a directory.\n" + 44 " Positions options: none, important, lines.\n" + 45 " --multi-dex: allows to generate several dex files if needed. " + 46 "This option is \n" + 47 " exclusive with --incremental, causes --num-threads to be ignored " + 48 "and only\n" + 49 " supports folder or archive output.\n" + 50 " --main-dex-list=<file>: <file> is a list of class file names, " + 51 "classes defined by\n" + 52 " those class files are put in classes.dex.\n" + 53 " --minimal-main-dex: only classes selected by --main-dex-list are " + 54 "to be put in\n" + 55 " the main dex.\n" + 56 " --input-list: <file> is a list of inputs.\n" + 57 " Each line in <file> must end with one of: .class .jar .zip .apk or be a directory.\n" + 58 " dx --annotool --annotation=<class> [--element=<element types>]\n" + 59 " [--print=<print types>]\n" + 60 " dx --dump [--debug] [--strict] [--bytes] [--optimize]\n" + 61 " [--basic-blocks | --rop-blocks | --ssa-blocks | --dot] " + 62 "[--ssa-step=<step>]\n" + 63 " [--width=<n>] [<file>.class | <file>.txt] ...\n" + 64 " Dump classfiles, or transformations thereof, in a " + 65 "human-oriented format.\n" + 66 " dx --find-usages <file.dex> <declaring type> <member>\n" + 67 " Find references and declarations to a field or method.\n" + 68 " declaring type: a class name in internal form, like " + 69 "Ljava/lang/Object;\n" + 70 " member: a field or method name, like hashCode\n" + 71 " dx -J<option> ... <arguments, in one of the above " + 72 "forms>\n" + 73 " Pass VM-specific options to the virtual machine that " + 74 "runs dx.\n" + 75 " dx --version\n" + 76 " Print the version of this tool (" + Version.VERSION + 77 ").\n" + 78 " dx --help\n" + 79 " Print this message."; 80 81 /** 82 * This class is uninstantiable. 83 */ 84 private Main() { 85 // This space intentionally left blank. 86 } 87 88 /** 89 * Run! 90 */ 91 public static void main(String[] args) { 92 boolean gotCmd = false; 93 boolean showUsage = false; 94 95 try { 96 for (int i = 0; i < args.length; i++) { 97 String arg = args[i]; 98 if (arg.equals("--") || !arg.startsWith("--")) { 99 gotCmd = false; 100 showUsage = true; 101 break; 102 } 103 104 gotCmd = true; 105 if (arg.equals("--dex")) { 106 com.android.dx.command.dexer.Main.main(without(args, i)); 107 break; 108 } else if (arg.equals("--dump")) { 109 com.android.dx.command.dump.Main.main(without(args, i)); 110 break; 111 } else if (arg.equals("--annotool")) { 112 com.android.dx.command.annotool.Main.main( 113 without(args, i)); 114 break; 115 } else if (arg.equals("--find-usages")) { 116 com.android.dx.command.findusages.Main.main(without(args, i)); 117 break; 118 } else if (arg.equals("--version")) { 119 version(); 120 break; 121 } else if (arg.equals("--help")) { 122 showUsage = true; 123 break; 124 } else { 125 gotCmd = false; 126 } 127 } 128 } catch (UsageException ex) { 129 showUsage = true; 130 } catch (RuntimeException ex) { 131 System.err.println("\nUNEXPECTED TOP-LEVEL EXCEPTION:"); 132 ex.printStackTrace(); 133 System.exit(2); 134 } catch (Throwable ex) { 135 System.err.println("\nUNEXPECTED TOP-LEVEL ERROR:"); 136 ex.printStackTrace(); 137 if ((ex instanceof NoClassDefFoundError) 138 || (ex instanceof NoSuchMethodError)) { 139 System.err.println( 140 "Note: You may be using an incompatible " + 141 "virtual machine or class library.\n" + 142 "(This program is known to be incompatible " + 143 "with recent releases of GCJ.)"); 144 } 145 System.exit(3); 146 } 147 148 if (!gotCmd) { 149 System.err.println("error: no command specified"); 150 showUsage = true; 151 } 152 153 if (showUsage) { 154 usage(); 155 System.exit(1); 156 } 157 } 158 159 /** 160 * Prints the version message. 161 */ 162 private static void version() { 163 System.err.println("dx version " + Version.VERSION); 164 System.exit(0); 165 } 166 167 /** 168 * Prints the usage message. 169 */ 170 private static void usage() { 171 System.err.println(USAGE_MESSAGE); 172 } 173 174 /** 175 * Returns a copy of the given args array, but without the indicated 176 * element. 177 * 178 * @param orig {@code non-null;} original array 179 * @param n which element to omit 180 * @return {@code non-null;} new array 181 */ 182 private static String[] without(String[] orig, int n) { 183 int len = orig.length - 1; 184 String[] newa = new String[len]; 185 System.arraycopy(orig, 0, newa, 0, n); 186 System.arraycopy(orig, n + 1, newa, n, len - n); 187 return newa; 188 } 189 } 190
