128 lines
3.4 KiB
C++
128 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/endian.h"
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#include "scumm/he/localizer.h"
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#include "common/file.h"
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#include "common/debug.h"
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namespace Scumm {
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Localizer::Localizer() {
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Common::File _file;
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_isValid = false;
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if (!_file.open("lokalizator.big"))
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return;
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uint _fileSize = _file.size();
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if (_fileSize < 0x18)
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return;
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byte *lkBig = new byte[_fileSize];
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_file.read(lkBig, _fileSize);
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// Obfuscation round 1
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for (uint i = 0; i < _fileSize; i++)
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lkBig[i] ^= (214013 * i + 2531011) >> 16;
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uint32 numFiles = READ_LE_UINT32(lkBig + 0x14);
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uint32 localeMsgOffset = 0, localeMsgSize = 0;
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uint32 talkieDatOffset = 0, talkieDatSize = 0;
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for (uint i = 0; i < numFiles; i++) {
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byte *fileHdr = lkBig + 0x18 + 0x4c * i;
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if (strcmp((char *) fileHdr, "locale.msg") == 0) {
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localeMsgOffset = READ_LE_UINT32(fileHdr + 0x48);
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localeMsgSize = READ_LE_UINT32(fileHdr + 0x44);
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continue;
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}
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if (strcmp((char *) fileHdr, "talkie.dat") == 0) {
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talkieDatOffset = READ_LE_UINT32(fileHdr + 0x48);
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talkieDatSize = READ_LE_UINT32(fileHdr + 0x44);
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continue;
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}
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}
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_isValid = true;
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if (localeMsgSize > 4) {
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uint32 msgCount = READ_LE_UINT32(lkBig + localeMsgOffset);
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// Obfuscation round 2
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uint32 st = 0x12345678;
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for (uint i = 0; i < localeMsgSize - 4; i++) {
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byte x = 0;
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switch (i & 3) {
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case 0:
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x = st;
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break;
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case 1:
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x = st + 35;
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break;
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case 2:
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x = st + 70;
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break;
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case 3:
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x = st + 105;
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st += 45707404;
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break;
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}
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lkBig[i + localeMsgOffset + 4] ^= x;
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}
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uint32 cur = localeMsgOffset + 4;
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for (uint i = 0; i < msgCount && cur < localeMsgOffset + localeMsgSize; i++) {
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cur += 4; // Domain id or something like this, always zero
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uint32 lenOrig = READ_LE_UINT32(lkBig + cur); cur += 4;
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Common::String orig((char *) lkBig + cur, (char *) lkBig + cur + lenOrig);
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cur += lenOrig;
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uint32 lenTrans = READ_LE_UINT32(lkBig + cur); cur += 4;
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Common::String trans((char *) lkBig + cur, (char *) lkBig + cur + lenTrans);
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cur += lenTrans;
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_translationMap[orig] = trans;
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}
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}
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for (uint32 cur = talkieDatOffset; cur < talkieDatOffset + talkieDatSize; cur += 16) {
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if (cur + 12 < _fileSize) {
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_talkMap[READ_LE_UINT32(lkBig+cur+4)] = READ_LE_UINT32(lkBig+cur+12);
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} else {
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warning("Localizer: Skipped overflow bytes at 0x%x", cur);
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}
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}
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}
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Common::String Localizer::translate(const Common::String &orig) {
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if (_translationMap.contains(orig)) {
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return _translationMap[orig];
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}
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return orig;
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}
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uint32 Localizer::mapTalk(uint32 orig) {
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if (_talkMap.contains(orig)) {
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return _talkMap[orig];
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}
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return orig;
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}
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}
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