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annotate src/luan/tools/CmdLine.java @ 46:a443637829c1

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remove LuaNumber git-svn-id: https://luan-java.googlecode.com/svn/trunk@47 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 27 Dec 2012 01:48:36 +0000
parents 57054fa43189
children 64ecb7a3aad7
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1 package luan.tools;
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2
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3 import java.util.Arrays;
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4 import java.util.Scanner;
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5 import luan.lib.BasicLib;
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6 import luan.lib.JavaLib;
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7 import luan.lib.StringLib;
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8 import luan.lib.TableLib;
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9 import luan.Lua;
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10 import luan.LuaState;
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11 import luan.LuaFunction;
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12 import luan.LuaTable;
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13 import luan.LuaException;
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14 import luan.interp.LuaCompiler;
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17 public class CmdLine {
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19 public static void main(String[] args) {
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20 LuaState lua = LuaCompiler.newLuaState();
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21 BasicLib.register(lua);
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22 JavaLib.register(lua);
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23 StringLib.register(lua);
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24 TableLib.register(lua);
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25 BasicLib.make_standard(lua);
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26 boolean interactive = false;
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27 boolean showVersion = false;
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28 int i = 0;
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29 if( args.length == 0 ) {
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30 interactive = true;
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31 showVersion = true;
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32 } else {
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33 while( i < args.length ) {
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34 String arg = args[i];
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35 if( !arg.startsWith("-") || arg.equals("--") )
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36 break;
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37 if( arg.equals("-i") ) {
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38 interactive = true;
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39 } else if( arg.equals("-v") ) {
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40 showVersion = true;
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41 } else if( arg.equals("-e") ) {
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42 if( ++i == args.length )
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43 error("'-e' needs argument");
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44 String cmd = args[i];
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45 try {
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46 LuaFunction fn = BasicLib.load(lua,cmd,"(command line)");
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47 lua.call(fn,null,null);
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48 } catch(LuaException e) {
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49 System.err.println("command line error: "+e.getMessage());
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50 System.exit(-1);
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51 }
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52 } else if( arg.equals("-") ) {
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53 try {
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54 BasicLib.do_file(lua,"stdin");
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55 } catch(LuaException e) {
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56 System.err.println(e.getMessage());
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57 System.exit(-1);
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58 }
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59 System.exit(0);
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60 } else {
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61 error("unrecognized option '"+arg+"'");
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62 }
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63 i++;
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64 }
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65 }
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66 if( showVersion )
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67 System.out.println(Lua.version);
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68 if( i < args.length ) {
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69 String file = args[i++];
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70 Object[] varArgs = new Object[args.length-1];
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71 System.arraycopy(args,1,varArgs,0,varArgs.length);
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72 LuaTable argsTable = new LuaTable();
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73 for( int j=0; j<args.length; j++ ) {
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74 argsTable.put( j, args[j] );
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75 }
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76 lua.global().put("arg",argsTable);
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77 try {
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78 LuaFunction fn = BasicLib.load_file(lua,file);
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79 lua.call(fn,null,null,varArgs);
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80 } catch(LuaException e) {
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81 // System.err.println("error: "+e.getMessage());
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82 e.printStackTrace();
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83 System.exit(-1);
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84 }
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85 }
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86 if( interactive )
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87 interactive(lua);
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88 }
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89
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90 private static void error(String msg) {
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91 System.err.println(msg);
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92 System.err.println("usage: java luan.CmdLine [options] [script [args]]");
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93 System.err.println("Available options are:");
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94 System.err.println(" -e stat execute string 'stat'");
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95 System.err.println(" -i enter interactive mode after executing 'script'");
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96 // System.err.println(" -l name require library 'name'");
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97 System.err.println(" -v show version information");
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98 // System.err.println(" -E ignore environment variables");
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99 System.err.println(" -- stop handling options");
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100 System.err.println(" - stop handling options and execute stdin");
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101 System.exit(-1);
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102 }
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103
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104 static void interactive(LuaState lua) {
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105 while( true ) {
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106 System.out.print("> ");
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107 String input = new Scanner(System.in).nextLine();
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108 try {
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109 LuaFunction fn = BasicLib.load(lua,input,"stdin");
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110 Object[] rtn = lua.call(fn,null,null);
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111 if( rtn.length > 0 )
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112 BasicLib.print(lua,rtn);
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113 } catch(LuaException e) {
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114 System.out.println(e.getMessage());
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115 }
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116 }
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117 }
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118 }