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117 lines
4.2 KiB
Java
Executable File
117 lines
4.2 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 jace.core.RAM;
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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.Arrays;
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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 Right now this is an
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* example/test program but it successfully tokenized the source of Lemonade
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* Stand.
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*
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* @author Brendan Robert (BLuRry) brendan.robert@gmail.com
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*/
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public class ApplesoftProgram {
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List<Line> lines = new ArrayList<>();
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public static final int startingAddressPointer = 0x067;
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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(ApplesoftProgram.class.getName()).log(Level.SEVERE, null, ex);
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} catch (IOException ex) {
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Logger.getLogger(ApplesoftProgram.class.getName()).log(Level.SEVERE, null, ex);
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}
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ApplesoftProgram test = ApplesoftProgram.fromBinary(Arrays.asList(toObjects(source)));
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System.out.println(test.toString());
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}
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public static Byte[] toObjects(byte[] bytesPrim) {
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Byte[] bytes = new Byte[bytesPrim.length];
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Arrays.setAll(bytes, n -> bytesPrim[n]);
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return bytes;
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}
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public static ApplesoftProgram fromBinary(List<Byte> binary) {
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return fromBinary(binary, 0x0801);
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}
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public static ApplesoftProgram fromMemory(RAM memory) {
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int startAddress = memory.readWordRaw(startingAddressPointer);
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int nextCheck = memory.readWordRaw(startAddress);
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int pos = startAddress;
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List<Byte> bytes = new ArrayList<>();
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while (nextCheck != 0) {
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while (pos < nextCheck + 2) {
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bytes.add(memory.readRaw(pos++));
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}
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nextCheck = memory.readWordRaw(nextCheck);
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}
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return fromBinary(bytes, startAddress);
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}
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public static ApplesoftProgram fromBinary(List<Byte> binary, int startAddress) {
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ApplesoftProgram program = new ApplesoftProgram();
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int currentAddress = startAddress;
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int pos = 0;
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while (pos < binary.size()) {
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int nextAddress = (binary.get(pos) & 0x0ff) + ((binary.get(pos + 1) & 0x0ff) << 8);
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if (nextAddress == 0) {
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break;
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}
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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) {
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break;
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}
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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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out = lines.stream().map((l) -> l.toString() + "\n").reduce(out, String::concat);
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return out;
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}
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}
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