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comparison src/luan/tools/CmdLine.java @ 120:8d7730a5e3b4

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move standalone logic from Java to Luan git-svn-id: https://luan-java.googlecode.com/svn/trunk@121 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Mon, 02 Jun 2014 04:43:45 +0000
parents e935581cf9fb
children 486a0641bca4
comparison
equal deleted inserted replaced
119:f1bf2890d80f 120:8d7730a5e3b4
12 12
13 public class CmdLine { 13 public class CmdLine {
14 14
15 public static void main(String[] args) { 15 public static void main(String[] args) {
16 LuanState luan = LuanState.newStandard(); 16 LuanState luan = LuanState.newStandard();
17 boolean interactive = false; 17 try {
18 boolean showVersion = false; 18 LuanFunction standalone = (LuanFunction)luan.get("Basic.standalone");
19 int i = 0; 19 luan.JAVA.call(standalone,"standalone",args);
20 if( args.length == 0 ) { 20 } catch(LuanException e) {
21 interactive = true; 21 System.err.println(e.getMessage());
22 showVersion = true; 22 System.exit(-1);
23 } else {
24 while( i < args.length ) {
25 String arg = args[i];
26 if( !arg.startsWith("-") || arg.equals("--") )
27 break;
28 if( arg.equals("-i") ) {
29 interactive = true;
30 } else if( arg.equals("-v") ) {
31 showVersion = true;
32 } else if( arg.equals("-e") ) {
33 if( ++i == args.length )
34 error("'-e' needs argument");
35 String cmd = args[i];
36 try {
37 LuanFunction fn = BasicLib.load(luan,cmd,"(command line)",false);
38 luan.JAVA.call(fn,null);
39 } catch(LuanException e) {
40 System.err.println("command line error: "+e.getMessage());
41 System.exit(-1);
42 }
43 } else if( arg.equals("-") ) {
44 try {
45 BasicLib.do_file(luan,"stdin");
46 } catch(LuanException e) {
47 System.err.println(e.getMessage());
48 System.exit(-1);
49 }
50 System.exit(0);
51 } else {
52 error("unrecognized option '"+arg+"'");
53 }
54 i++;
55 }
56 } 23 }
57 if( showVersion ) 24 System.exit(0);
58 System.out.println(Luan.version);
59 if( i < args.length ) {
60 String file = args[i++];
61 Object[] varArgs = new Object[args.length-1];
62 System.arraycopy(args,1,varArgs,0,varArgs.length);
63 LuanTable argsTable = new LuanTable();
64 for( int j=0; j<args.length; j++ ) {
65 argsTable.put( j, args[j] );
66 }
67 luan.global().put("arg",argsTable);
68 try {
69 LuanFunction fn = BasicLib.load_file(luan,file);
70 luan.JAVA.call(fn,null,varArgs);
71 } catch(LuanException e) {
72 // System.err.println("error: "+e.getMessage());
73 e.printStackTrace();
74 System.exit(-1);
75 }
76 }
77 if( interactive )
78 interactive(luan);
79 }
80
81 private static void error(String msg) {
82 System.err.println(msg);
83 System.err.println("usage: java luan.CmdLine [options] [script [args]]");
84 System.err.println("Available options are:");
85 System.err.println(" -e stat execute string 'stat'");
86 System.err.println(" -i enter interactive mode after executing 'script'");
87 // System.err.println(" -l name require library 'name'");
88 System.err.println(" -v show version information");
89 // System.err.println(" -E ignore environment variables");
90 System.err.println(" -- stop handling options");
91 System.err.println(" - stop handling options and execute stdin");
92 System.exit(-1);
93 }
94
95 static void interactive(LuanState luan) {
96 Console console = System.console();
97 LuanFunction print = (LuanFunction)luan.global().get("print");
98 while( true ) {
99 String input = console.readLine("> ");
100 if( input==null )
101 break;
102 try {
103 Object[] rtn = Luan.array(luan.eval(input,"stdin",true));
104 if( rtn.length > 0 )
105 luan.JAVA.call(print,"print",rtn);
106 } catch(LuanException e) {
107 System.out.println(e.getMessage());
108 }
109 }
110 } 25 }
111 26
112 } 27 }