/******************************************************************************* * Copyright (c) 2010 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. ******************************************************************************/ package org.luaj.vm2.ast; import java.io.ByteArrayOutputStream; import java.io.UnsupportedEncodingException; import org.luaj.vm2.LuaString; public class Str { private Str() {} public static LuaString quoteString(String image) { String s = image.substring(1, image.length()-1); byte[] bytes = unquote(s); return LuaString.valueOf(bytes); } public static LuaString charString(String image) { String s = image.substring(1, image.length()-1); byte[] bytes = unquote(s); return LuaString.valueOf(bytes); } public static LuaString longString(String image) { int i = image.indexOf('[', image.indexOf('[')+1)+1; String s = image.substring(i,image.length()-i); byte[] b = iso88591bytes(s); return LuaString.valueOf(b); } public static byte[] iso88591bytes( String s ) { try { return s.getBytes("ISO8859-1"); } catch (UnsupportedEncodingException e) { throw new IllegalStateException("ISO8859-1 not supported"); } } public static byte[] unquote(String s) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); char[] c = s.toCharArray(); int n = c.length; for ( int i=0; i<n; i++ ) { if ( c[i] == '\\' && i<n ) { switch ( c[++i] ) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': int d=(int) (c[i++]-'0'); for ( int j=0; i<n && j<2 && c[i]>='0' && c[i]<='9'; i++, j++ ) d = d * 10 + (int) (c[i]-'0'); baos.write( (byte) d ); --i; continue; case 'a': baos.write( (byte) 7 ); continue; case 'b': baos.write( (byte) '\b' ); continue; case 'f': baos.write( (byte) '\f' ); continue; case 'n': baos.write( (byte) '\n' ); continue; case 'r': baos.write( (byte) '\r' ); continue; case 't': baos.write( (byte) '\t' ); continue; case 'v': baos.write( (byte) 11 ); continue; case '"': baos.write( (byte) '"' ); continue; case '\'': baos.write( (byte) '\'' ); continue; case '\\': baos.write( (byte) '\\' ); continue; default: baos.write( (byte) c[i] ); break; } } else { baos.write( (byte) c[i] ); } } return baos.toByteArray(); } }