Mercurial Hosting > luan
annotate src/luan/tools/CmdLine.java @ 38:30fcb4fb0f76
move CmdLine to luan.tools
git-svn-id: https://luan-java.googlecode.com/svn/trunk@39 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 20 Dec 2012 02:43:37 +0000 |
parents | src/luan/CmdLine.java@8a57ebfdfd78 |
children | e5bcb1eeafc1 |
rev | line source |
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38
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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.Lua; |
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8 import luan.LuaState; |
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9 import luan.LuaFunction; |
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10 import luan.LuaTable; |
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11 import luan.LuaNumber; |
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12 import luan.LuaException; |
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13 import luan.interp.LuaCompiler; |
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14 |
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15 |
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16 public class CmdLine { |
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17 |
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18 public static void main(String[] args) throws Exception { |
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19 LuaState lua = LuaCompiler.newLuaState(); |
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20 BasicLib.register(lua); |
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21 JavaLib.register(lua); |
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22 boolean interactive = false; |
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23 boolean showVersion = false; |
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24 int i = 0; |
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25 if( args.length == 0 ) { |
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26 interactive = true; |
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27 showVersion = true; |
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28 } else { |
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29 while( i < args.length ) { |
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30 String arg = args[i]; |
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31 if( !arg.startsWith("-") || arg.equals("--") ) |
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32 break; |
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33 if( arg.equals("-i") ) { |
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34 interactive = true; |
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35 } else if( arg.equals("-v") ) { |
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36 showVersion = true; |
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37 } else if( arg.equals("-e") ) { |
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38 if( ++i == args.length ) |
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39 error("'-e' needs argument"); |
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40 String cmd = args[i]; |
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41 try { |
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42 LuaFunction fn = BasicLib.load(lua,cmd); |
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43 fn.call(lua); |
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44 } catch(LuaException e) { |
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45 System.err.println("command line error: "+e.getMessage()); |
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46 System.exit(-1); |
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47 } |
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48 } else if( arg.equals("-") ) { |
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49 try { |
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50 BasicLib.dofile(lua,null); |
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51 } catch(LuaException e) { |
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52 System.err.println(e.getMessage()); |
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53 System.exit(-1); |
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54 } |
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55 System.exit(0); |
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56 } else { |
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57 error("unrecognized option '"+arg+"'"); |
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58 } |
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59 i++; |
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60 } |
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61 } |
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62 if( showVersion ) |
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63 System.out.println(Lua.version); |
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64 if( i < args.length ) { |
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65 String file = args[i++]; |
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66 Object[] varArgs = new Object[args.length-1]; |
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67 System.arraycopy(args,1,varArgs,0,varArgs.length); |
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68 LuaTable argsTable = new LuaTable(); |
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69 for( int j=0; j<args.length; j++ ) { |
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70 argsTable.put( new LuaNumber(j), args[j] ); |
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71 } |
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72 lua.global().put("arg",argsTable); |
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73 try { |
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74 LuaFunction fn = BasicLib.loadfile(lua,file); |
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75 fn.call(lua,varArgs); |
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76 } catch(LuaException e) { |
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77 // System.err.println(e.getMessage()); |
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78 e.printStackTrace(); |
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79 System.exit(-1); |
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80 } |
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81 } |
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82 if( interactive ) |
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83 interactive(lua); |
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84 } |
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85 |
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86 private static void error(String msg) { |
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87 System.err.println(msg); |
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88 System.err.println("usage: java luan.CmdLine [options] [script [args]]"); |
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89 System.err.println("Available options are:"); |
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90 System.err.println(" -e stat execute string 'stat'"); |
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91 System.err.println(" -i enter interactive mode after executing 'script'"); |
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92 // System.err.println(" -l name require library 'name'"); |
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93 System.err.println(" -v show version information"); |
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94 // System.err.println(" -E ignore environment variables"); |
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95 System.err.println(" -- stop handling options"); |
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96 System.err.println(" - stop handling options and execute stdin"); |
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97 System.exit(-1); |
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98 } |
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99 |
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100 static void interactive(LuaState lua) { |
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101 while( true ) { |
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102 System.out.print("> "); |
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103 String input = new Scanner(System.in).nextLine(); |
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104 try { |
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105 LuaFunction fn = BasicLib.load(lua,input); |
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106 Object[] rtn = fn.call(lua); |
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107 if( rtn.length > 0 ) |
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108 BasicLib.print(lua,rtn); |
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109 } catch(LuaException e) { |
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110 System.out.println(e.getMessage()); |
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111 } |
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112 } |
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113 } |
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114 } |