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Luaj 2.0 for the jse platform
/*******************************************************************************
* Copyright (c) 2009 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Vector;
import org.luaj.vm2.LoadState;
import org.luaj.vm2.Lua;
import org.luaj.vm2.LuaFunction;
import org.luaj.vm2.LuaTable;
import org.luaj.vm2.LuaValue;
import org.luaj.vm2.lib.jse.JsePlatform;
import org.luaj.vm2.lua2java.Lua2Java;
import org.luaj.vm2.luajc.LuaJC;
/**
* lua command for use in java se environments.
*/
public class lua {
private static final String version = Lua._VERSION + "Copyright (c) 2009 Luaj.org.org";
private static final String usage =
"usage: java -cp luaj-jse.jar lua [options] [script [args]].\n" +
"Available options are:\n" +
" -e stat execute string 'stat'\n" +
" -l name require library 'name'\n" +
" -i enter interactive mode after executing 'script'\n" +
" -v show version information\n" +
" -j use lua2java source-to-source compiler\n" +
" -b use luajc bytecode-to-bytecode compiler (requires bcel on class path)\n" +
" -n nodebug - do not load debug library by default\n" +
" -- stop handling options\n" +
" - execute stdin and stop handling options";
private static void usageExit() {
System.out.println(usage);
System.exit(-1);
}
private static LuaValue _G;
public static void main( String[] args ) throws IOException {
// process args
boolean interactive = (args.length == 0);
boolean versioninfo = false;
boolean processing = true;
boolean nodebug = false;
boolean luajc = false;
boolean lua2java = false;
Vector libs = null;
try {
// stateful argument processing
for ( int i=0; i= args.length )
usageExit();
// input script - defer to last stage
break;
case 'b':
luajc = true;
break;
case 'j':
lua2java = true;
break;
case 'l':
if ( ++i >= args.length )
usageExit();
libs = libs!=null? libs: new Vector();
libs.addElement( args[i] );
break;
case 'i':
interactive = true;
break;
case 'v':
versioninfo = true;
break;
case 'n':
nodebug = true;
break;
case '-':
if ( args[i].length() > 2 )
usageExit();
processing = false;
break;
default:
usageExit();
break;
}
}
}
// echo version
if ( versioninfo )
System.out.println(version);
// new lua state
_G = nodebug? JsePlatform.standardGlobals(): JsePlatform.debugGlobals();
if ( luajc ) LuaJC.install();
if ( lua2java) Lua2Java.install();
for ( int i=0, n=libs!=null? libs.size(): 0; i ");
System.out.flush();
String line = reader.readLine();
if ( line == null )
return;
processScript( new ByteArrayInputStream(line.getBytes()), "=stdin" );
}
}
}