mirror of https://github.com/badvision/jace.git
88 lines
3.2 KiB
Java
Executable File
88 lines
3.2 KiB
Java
Executable File
/*
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* Copyright (C) 2012 Brendan Robert (BLuRry) brendan.robert@gmail.com.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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package jace.applesoft;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* Decode an applesoft program into a list of program lines
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* Right now this is an example/test program but it successfully tokenized the
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* souce of Lemonade Stand.
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* @author Brendan Robert (BLuRry) brendan.robert@gmail.com
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*/
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public class Program {
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List<Line> lines = new ArrayList<Line>();
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int startingAddress = 0x0801;
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public static void main(String... args) {
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byte[] source = null;
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try {
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File f = new File("/home/brobert/Documents/Personal/a2gameserver/lib/data/games/LEMONADE#fc0801");
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FileInputStream in = new FileInputStream(f);
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source = new byte[(int) f.length()];
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in.read(source);
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} catch (FileNotFoundException ex) {
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Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
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} catch (IOException ex) {
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Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
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}
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Program test = Program.fromBinary(source);
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System.out.println(test.toString());
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}
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static Program fromBinary(byte[] binary) {
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return fromBinary(binary, 0x0801);
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}
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static Program fromBinary(byte[] binary, int startAddress) {
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Program program = new Program();
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int currentAddress = startAddress;
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int pos = 0;
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while (pos < binary.length) {
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int nextAddress = (binary[pos] & 0x0ff) + ((binary[pos+1] & 0x0ff) << 8);
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if (nextAddress == 0) break;
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int length = nextAddress - currentAddress;
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Line l = Line.fromBinary(binary, pos);
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if (l == null) break;
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program.lines.add(l);
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if (l.getLength() != length) {
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System.out.println("Line "+l.getNumber()+" parsed as "+l.getLength()+" bytes long, but that leaves "+
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(length - l.getLength())+" bytes hidden behind next line");
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}
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pos += length;
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currentAddress = nextAddress;
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}
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return program;
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}
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@Override
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public String toString() {
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String out = "";
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for (Line l : lines)
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out += l.toString() + "\n";
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return out;
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}
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} |