126 lines
5.4 KiB
Java
126 lines
5.4 KiB
Java
/*
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Copyright 2019-2022 Dmitry Isaenko
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This file is part of libKonogonka.
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libKonogonka is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libKonogonka 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with libKonogonka. If not, see <https://www.gnu.org/licenses/>.
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*/
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package libKonogonka.fs.PFS0;
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import libKonogonka.Converter;
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import libKonogonka.RainbowDump;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import java.io.BufferedInputStream;
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import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import static libKonogonka.Converter.getLEint;
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import static libKonogonka.Converter.getLElong;
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public class PFS0Header {
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private final static Logger log = LogManager.getLogger(PFS0Header.class);
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private final String magic;
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private final int filesCount;
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private final int stringTableSize;
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private final byte[] padding;
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private final PFS0subFile[] pfs0subFiles;
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public PFS0Header(BufferedInputStream stream) throws Exception{
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byte[] fileStartingBytes = new byte[0x10];
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if (0x10 != stream.read(fileStartingBytes))
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throw new Exception("Reading stream suddenly ended while trying to read starting 0x10 bytes");
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// Check PFS0Provider
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magic = new String(fileStartingBytes, 0x0, 0x4, StandardCharsets.US_ASCII);
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if (! magic.equals("PFS0")){
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throw new Exception("Bad magic");
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}
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// Get files count
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filesCount = getLEint(fileStartingBytes, 0x4);
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if (filesCount <= 0 ) {
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throw new Exception("Files count is too small");
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}
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// Get string table
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stringTableSize = getLEint(fileStartingBytes, 0x8);
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if (stringTableSize <= 0 ){
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throw new Exception("String table is too small");
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}
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padding = Arrays.copyOfRange(fileStartingBytes, 0xc, 0x10);
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//-------------------------------------------------------------------
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pfs0subFiles = new PFS0subFile[filesCount];
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long[] offsetsSubFiles = new long[filesCount];
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long[] sizesSubFiles = new long[filesCount];
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int[] strTableOffsets = new int[filesCount];
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byte[][] zeroBytes = new byte[filesCount][];
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byte[] fileEntryTable = new byte[0x18];
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for (int i=0; i < filesCount; i++){
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if (0x18 != stream.read(fileEntryTable))
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throw new Exception("Reading stream suddenly ended while trying to read File Entry Table #"+i);
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offsetsSubFiles[i] = getLElong(fileEntryTable, 0);
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sizesSubFiles[i] = getLElong(fileEntryTable, 0x8);
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strTableOffsets[i] = getLEint(fileEntryTable, 0x10);
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zeroBytes[i] = Arrays.copyOfRange(fileEntryTable, 0x14, 0x18);
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}
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//*******************************************************************
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// Here pointer is in front of String table
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String[] subFileNames = new String[filesCount];
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byte[] stringTbl = new byte[stringTableSize];
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if (stream.read(stringTbl) != stringTableSize){
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throw new Exception("Read PFS0Provider String table failure. Can't read requested string table size ("+stringTableSize+")");
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}
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for (int i = 0; i < filesCount; i++){
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int j = 0;
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while (stringTbl[strTableOffsets[i]+j] != (byte)0x00)
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j++;
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subFileNames[i] = new String(stringTbl, strTableOffsets[i], j, StandardCharsets.UTF_8);
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}
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for (int i = 0; i < filesCount; i++){
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pfs0subFiles[i] = new PFS0subFile(
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subFileNames[i],
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offsetsSubFiles[i],
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sizesSubFiles[i],
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zeroBytes[i]);
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}
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}
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public String getMagic() {return magic;}
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public int getFilesCount() {return filesCount;}
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public int getStringTableSize() {return stringTableSize;}
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public byte[] getPadding() {return padding;}
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public PFS0subFile[] getPfs0subFiles() {return pfs0subFiles;}
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public void printDebug(){
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log.debug(".:: PFS0Header ::.\n" +
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"Magic " + magic + "\n" +
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"Files count " + RainbowDump.formatDecHexString(filesCount) + "\n" +
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"String Table Size " + RainbowDump.formatDecHexString(stringTableSize) + "\n" +
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"Padding " + Converter.byteArrToHexStringAsLE(padding) + "\n\n"
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);
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for (PFS0subFile subFile : pfs0subFiles){
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log.debug("\nName: " + subFile.getName() + "\n" +
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"Offset " + RainbowDump.formatDecHexString(subFile.getOffset()) + "\n" +
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"Size " + RainbowDump.formatDecHexString(subFile.getSize()) + "\n" +
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"Zeroes " + Converter.byteArrToHexStringAsLE(subFile.getZeroes()) + "\n" +
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"----------------------------------------------------------------"
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);
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}
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}
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}
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