scummvm/engines/sludge/fileset.cpp

263 lines
7.0 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/file.h"
#include "common/debug.h"
#include "common/ustr.h"
#include "sludge/allfiles.h"
#include "sludge/moreio.h"
#include "sludge/newfatal.h"
#include "sludge/sludge.h"
#include "sludge/version.h"
namespace Sludge {
ResourceManager::ResourceManager() {
init();
}
ResourceManager::~ResourceManager() {
kill();
}
void ResourceManager::init() {
_sliceBusy = true;
_bigDataFile = nullptr;
_startOfDataIndex = 0;
_startOfTextIndex = 0;
_startOfSubIndex = 0;
_startOfObjectIndex = 0;
_startIndex = 0;
}
void ResourceManager::kill() {
if (_bigDataFile) {
delete _bigDataFile;
_bigDataFile = nullptr;
}
}
bool ResourceManager::openSubSlice(int num) {
if (_sliceBusy) {
fatal("Can't read from data file", "I'm already reading something");
return false;
}
_bigDataFile->seek(_startOfSubIndex + (num << 2), 0);
_bigDataFile->seek(_bigDataFile->readUint32LE(), 0);
return _sliceBusy = true;
}
bool ResourceManager::openObjectSlice(int num) {
if (_sliceBusy) {
fatal("Can't read from data file", "I'm already reading something");
return false;
}
_bigDataFile->seek(_startOfObjectIndex + (num << 2), 0);
_bigDataFile->seek(_bigDataFile->readUint32LE(), 0);
return _sliceBusy = true;
}
uint ResourceManager::openFileFromNum(int num) {
if (_sliceBusy) {
fatal("Can't read from data file", "I'm already reading something");
return 0;
}
_bigDataFile->seek(_startOfDataIndex + (num << 2), 0);
_bigDataFile->seek(_bigDataFile->readUint32LE(), 1);
_sliceBusy = true;
return _bigDataFile->readUint32LE();
}
uint32 ResourceManager::_cp1250ToUTF32[128] = {
/* 0x80 */
0x20ac, 0xfffd, 0x201a, 0xfffd, 0x201e, 0x2026, 0x2020, 0x2021,
0xfffd, 0x2030, 0x0160, 0x2039, 0x015a, 0x0164, 0x017d, 0x0179,
/* 0x90 */
0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
0xfffd, 0x2122, 0x0161, 0x203a, 0x015b, 0x0165, 0x017e, 0x017a,
/* 0xa0 */
0x00a0, 0x02c7, 0x02d8, 0x0141, 0x00a4, 0x0104, 0x00a6, 0x00a7,
0x00a8, 0x00a9, 0x015e, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x017b,
/* 0xb0 */
0x00b0, 0x00b1, 0x02db, 0x0142, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
0x00b8, 0x0105, 0x015f, 0x00bb, 0x013d, 0x02dd, 0x013e, 0x017c,
/* 0xc0 */
0x0154, 0x00c1, 0x00c2, 0x0102, 0x00c4, 0x0139, 0x0106, 0x00c7,
0x010c, 0x00c9, 0x0118, 0x00cb, 0x011a, 0x00cd, 0x00ce, 0x010e,
/* 0xd0 */
0x0110, 0x0143, 0x0147, 0x00d3, 0x00d4, 0x0150, 0x00d6, 0x00d7,
0x0158, 0x016e, 0x00da, 0x0170, 0x00dc, 0x00dd, 0x0162, 0x00df,
/* 0xe0 */
0x0155, 0x00e1, 0x00e2, 0x0103, 0x00e4, 0x013a, 0x0107, 0x00e7,
0x010d, 0x00e9, 0x0119, 0x00eb, 0x011b, 0x00ed, 0x00ee, 0x010f,
/* 0xf0 */
0x0111, 0x0144, 0x0148, 0x00f3, 0x00f4, 0x0151, 0x00f6, 0x00f7,
0x0159, 0x016f, 0x00fa, 0x0171, 0x00fc, 0x00fd, 0x0163, 0x02d9,
};
// Converts a string from ISO8859-2 or CP1250 to UTF8.
// This is needed for old games.
Common::String ResourceManager::convertString(const Common::String &s) {
Common::String res;
Common::U32String tmp;
// Convert CP1250 to UTF32
for (uint i = 0; i < s.size(); ++i) {
const byte c = s[i];
if (c < 0x80) {
tmp += c;
} else {
uint32 utf32 = _cp1250ToUTF32[c - 0x80];
if (utf32) {
tmp += utf32;
} else {
// It's an invalid CP1250 character...
return s;
}
}
}
// Convert UTF32 to UTF8
for (uint i = 0; i < tmp.size(); ++i) {
uint32 wc = tmp[i];
int count;
if (wc < 0x80)
count = 1;
else if (wc < 0x800)
count = 2;
else if (wc < 0x10000) {
if (wc < 0xd800 || wc >= 0xe000) {
count = 3;
} else {
// It's an invalid UTF32 character...
return s;
}
} else if (wc < 0x110000) {
count = 4;
} else {
// It's an invalid UTF32 character...
return s;
}
Common::String r = "";
switch (count) {
case 4:
r = (char)(0x80 | (wc & 0x3f)) + r;
wc = wc >> 6;
wc |= 0x10000;
// falls through
case 3:
r = (char)(0x80 | (wc & 0x3f)) + r;
wc = wc >> 6;
wc |= 0x800;
// falls through
case 2:
r = (char)(0x80 | (wc & 0x3f)) + r;
wc = wc >> 6;
wc |= 0xc0;
// falls through
case 1:
r = wc + r;
}
res += r;
}
return res;
}
Common::String ResourceManager::getNumberedString(int value) {
if (_sliceBusy) {
fatal("Can't read from data file", "I'm already reading something");
return NULL;
}
_bigDataFile->seek((value << 2) + _startOfTextIndex, 0);
value = _bigDataFile->readUint32LE();
_bigDataFile->seek(value, 0);
Common::String s = readString(_bigDataFile);
if (gameVersion < VERSION(2, 2)) {
// This is an older game - We need to convert the string to UTF-8
s = convertString(s);
}
return s;
}
bool ResourceManager::startAccess() {
int wasBusy = _sliceBusy;
_sliceBusy = true;
return wasBusy;
}
void ResourceManager::finishAccess() {
_sliceBusy = false;
}
void ResourceManager::setData(Common::File *fp) {
_bigDataFile = fp;
_startIndex = fp->pos();
}
void ResourceManager::setFileIndices(uint numLanguages, uint skipBefore) {
_bigDataFile->seek(_startIndex, SEEK_SET);
_sliceBusy = false;
if (skipBefore > numLanguages) {
warning("Not a valid language ID! Using default instead.");
skipBefore = 0;
}
// STRINGS
int skipAfter = numLanguages - skipBefore;
while (skipBefore) {
_bigDataFile->seek(_bigDataFile->readUint32LE(), SEEK_SET);
skipBefore--;
}
_startOfTextIndex = _bigDataFile->pos() + 4;
debugC(2, kSludgeDebugDataLoad, "startOfTextIndex: %i", _startOfTextIndex);
_bigDataFile->seek(_bigDataFile->readUint32LE(), SEEK_SET);
while (skipAfter) {
_bigDataFile->seek(_bigDataFile->readUint32LE(), SEEK_SET);
skipAfter--;
}
_startOfSubIndex = _bigDataFile->pos() + 4;
_bigDataFile->seek(_bigDataFile->readUint32LE(), SEEK_CUR);
debugC(2, kSludgeDebugDataLoad, "startOfSubIndex: %i", _startOfSubIndex);
_startOfObjectIndex = _bigDataFile->pos() + 4;
_bigDataFile->seek(_bigDataFile->readUint32LE(), SEEK_CUR);
debugC(2, kSludgeDebugDataLoad, "startOfObjectIndex: %i", _startOfObjectIndex);
// Remember that the data section starts here
_startOfDataIndex = _bigDataFile->pos();
debugC(2, kSludgeDebugDataLoad, "startOfDataIndex: %i", _startOfDataIndex);
}
} // End of namespace Sludge