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|
/* 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/scummsys.h"
#include "common/archive.h"
#include "common/memstream.h"
#include "common/textconsole.h"
#include "xeen/xeen.h"
#include "xeen/files.h"
#include "xeen/saves.h"
namespace Xeen {
uint16 BaseCCArchive::convertNameToId(const Common::String &resourceName) {
if (resourceName.empty())
return 0xffff;
Common::String name = resourceName;
name.toUppercase();
// Check if a resource number is being directly specified
if (name.size() == 4) {
char *endPtr;
uint16 num = (uint16)strtol(name.c_str(), &endPtr, 16);
if (!*endPtr)
return num;
}
const byte *msgP = (const byte *)name.c_str();
int total = *msgP++;
for (; *msgP; total += *msgP++) {
// Rotate the bits in 'total' right 7 places
total = (total & 0x007F) << 9 | (total & 0xFF80) >> 7;
}
return total;
}
void BaseCCArchive::loadIndex(Common::SeekableReadStream *stream) {
int count = stream->readUint16LE();
// Read in the data for the archive's index
byte *rawIndex = new byte[count * 8];
stream->read(rawIndex, count * 8);
// Decrypt the index
int ah = 0xac;
for (int i = 0; i < count * 8; ++i) {
rawIndex[i] = (byte)(((rawIndex[i] << 2 | rawIndex[i] >> 6) + ah) & 0xff);
ah += 0x67;
}
// Extract the index data into entry structures
_index.reserve(count);
const byte *entryP = &rawIndex[0];
for (int i = 0; i < count; ++i, entryP += 8) {
CCEntry entry;
entry._id = READ_LE_UINT16(entryP);
entry._offset = READ_LE_UINT32(entryP + 2) & 0xffffff;
entry._size = READ_LE_UINT16(entryP + 5);
assert(!entryP[7]);
_index.push_back(entry);
}
delete[] rawIndex;
}
bool BaseCCArchive::hasFile(const Common::String &name) const {
CCEntry ccEntry;
return getHeaderEntry(name, ccEntry);
}
bool BaseCCArchive::getHeaderEntry(const Common::String &resourceName, CCEntry &ccEntry) const {
uint16 id = convertNameToId(resourceName);
// Loop through the index
for (uint i = 0; i < _index.size(); ++i) {
if (_index[i]._id == id) {
ccEntry = _index[i];
return true;
}
}
// Could not find an entry
return false;
}
const Common::ArchiveMemberPtr BaseCCArchive::getMember(const Common::String &name) const {
if (!hasFile(name))
return Common::ArchiveMemberPtr();
return Common::ArchiveMemberPtr(new Common::GenericArchiveMember(name, this));
}
int BaseCCArchive::listMembers(Common::ArchiveMemberList &list) const {
// CC files don't maintain the original filenames, so we can't list it
return 0;
}
/*------------------------------------------------------------------------*/
CCArchive::CCArchive(const Common::String &filename, bool encoded):
BaseCCArchive(), _filename(filename), _encoded(encoded) {
File f(filename, SearchMan);
loadIndex(&f);
}
CCArchive::CCArchive(const Common::String &filename, const Common::String &prefix,
bool encoded): BaseCCArchive(), _filename(filename),
_prefix(prefix), _encoded(encoded) {
_prefix.toLowercase();
File f(filename, SearchMan);
loadIndex(&f);
}
CCArchive::~CCArchive() {
}
bool CCArchive::getHeaderEntry(const Common::String &resourceName, CCEntry &ccEntry) const {
Common::String resName = resourceName;
if (!_prefix.empty() && resName.contains('|')) {
resName.toLowercase();
Common::String prefix = _prefix + "|";
if (!strncmp(resName.c_str(), prefix.c_str(), prefix.size()))
// Matching CC prefix, so strip it off and allow processing to
// continue onto the base getHeaderEntry method
resName = Common::String(resName.c_str() + prefix.size());
else
// Not matching prefix, so don't allow a match
return false;
}
return BaseCCArchive::getHeaderEntry(resName, ccEntry);
}
Common::SeekableReadStream *CCArchive::createReadStreamForMember(const Common::String &name) const {
CCEntry ccEntry;
if (getHeaderEntry(name, ccEntry)) {
// Open the correct CC file
Common::File f;
if (!f.open(_filename))
error("Could not open CC file");
// Read in the data for the specific resource
f.seek(ccEntry._offset);
byte *data = (byte *)malloc(ccEntry._size);
f.read(data, ccEntry._size);
if (_encoded) {
// Decrypt the data
for (int i = 0; i < ccEntry._size; ++i)
data[i] ^= 0x35;
}
// Return the data as a stream
return new Common::MemoryReadStream(data, ccEntry._size, DisposeAfterUse::YES);
}
return nullptr;
}
/*------------------------------------------------------------------------*/
FileManager::FileManager(XeenEngine *vm) {
Common::File f;
_isDarkCc = vm->getGameID() == GType_DarkSide;
File::_xeenCc = (vm->getGameID() == GType_DarkSide) ? nullptr :
new CCArchive("xeen.cc", "xeen", true);
File::_darkCc = (vm->getGameID() == GType_Clouds) ? nullptr :
new CCArchive("dark.cc", "dark", true);
if (Common::File::exists("intro.cc")) {
CCArchive *introCc = new CCArchive("intro.cc", "intro", true);
SearchMan.add("intro", introCc);
}
File::_currentArchive = vm->getGameID() == GType_DarkSide ?
File::_darkCc : File::_xeenCc;
assert(File::_currentArchive);
}
FileManager::~FileManager() {
SearchMan.remove("intro");
delete File::_xeenCc;
delete File::_darkCc;
}
void FileManager::setGameCc(int ccMode) {
if (g_vm->getGameID() != GType_WorldOfXeen)
ccMode = 1;
File::setCurrentArchive(ccMode);
_isDarkCc = ccMode != 0;
}
/*------------------------------------------------------------------------*/
CCArchive *File::_xeenCc;
CCArchive *File::_darkCc;
SaveArchive *File::_xeenSave;
SaveArchive *File::_darkSave;
BaseCCArchive *File::_currentArchive;
SaveArchive *File::_currentSave;
File::File(const Common::String &filename) {
File::open(filename);
}
File::File(const Common::String &filename, Common::Archive &archive) {
File::open(filename, archive);
}
File::File(const Common::String &filename, int ccMode) {
File::open(filename, ccMode);
}
bool File::open(const Common::String &filename) {
if (!_currentSave || !Common::File::open(filename, *_currentSave)) {
if (!Common::File::open(filename, *_currentArchive)) {
// Could not find in current archive, so try intro.cc or in folder
if (!Common::File::open(filename))
error("Could not open file - %s", filename.c_str());
}
}
return true;
}
bool File::open(const Common::String &filename, Common::Archive &archive) {
if (!Common::File::open(filename, archive))
error("Could not open file - %s", filename.c_str());
return true;
}
bool File::open(const Common::String &filename, int ccMode) {
FileManager &files = *g_vm->_files;
int oldMode = files._isDarkCc ? 1 : 0;
files.setGameCc(ccMode);
File::open(filename);
files.setGameCc(oldMode);
return true;
}
void File::setCurrentArchive(int ccMode) {
switch (ccMode) {
case 0:
_currentArchive = _xeenCc;
_currentSave = _xeenSave;
break;
case 1:
_currentArchive = _darkCc;
_currentSave = _darkSave;
break;
default:
break;
}
assert(_currentArchive);
}
Common::String File::readString() {
Common::String result;
char c;
while (pos() < size() && (c = (char)readByte()) != '\0')
result += c;
return result;
}
bool File::exists(const Common::String &filename) {
if (!_currentSave || !_currentSave->hasFile(filename)) {
if (!_currentArchive->hasFile(filename)) {
// Could not find in current archive, so try intro.cc or in folder
return Common::File::exists(filename);
}
}
return true;
}
bool File::exists(const Common::String &filename, int ccMode) {
FileManager &files = *g_vm->_files;
int oldMode = files._isDarkCc ? 1 : 0;
files.setGameCc(ccMode);
bool result = exists(filename);
files.setGameCc(oldMode);
return result;
}
void File::syncBitFlags(Common::Serializer &s, bool *startP, bool *endP) {
byte data = 0;
int bitCounter = 0;
for (bool *p = startP; p <= endP; ++p, bitCounter = (bitCounter + 1) % 8) {
if (p == endP || bitCounter == 0) {
if (p != endP || s.isSaving())
s.syncAsByte(data);
if (p == endP)
break;
if (s.isSaving())
data = 0;
}
if (s.isLoading())
*p = (data >> bitCounter) != 0;
else if (*p)
data |= 1 << bitCounter;
}
}
/*------------------------------------------------------------------------*/
void StringArray::load(const Common::String &name) {
File f(name);
clear();
while (f.pos() < f.size())
push_back(f.readString());
}
void StringArray::load(const Common::String &name, int ccMode) {
File f(name, ccMode);
clear();
while (f.pos() < f.size())
push_back(f.readString());
}
/*------------------------------------------------------------------------*/
SaveArchive::SaveArchive(Party *party) : BaseCCArchive(), _party(party) {
_data = nullptr;
}
SaveArchive::~SaveArchive() {
for (Common::HashMap<uint16, Common::MemoryWriteStreamDynamic *>::iterator it = _newData.begin(); it != _newData.end(); it++) {
delete (*it)._value;
}
delete[] _data;
}
Common::SeekableReadStream *SaveArchive::createReadStreamForMember(const Common::String &name) const {
CCEntry ccEntry;
// If the given resource has already been perviously "written" to the
// save manager, then return that new resource
uint16 id = BaseCCArchive::convertNameToId(name);
if (_newData.contains(id)) {
Common::MemoryWriteStreamDynamic *stream = _newData[id];
return new Common::MemoryReadStream(stream->getData(), stream->size());
}
// Retrieve the resource from the loaded savefile
if (getHeaderEntry(name, ccEntry)) {
// Open the correct CC entry
return new Common::MemoryReadStream(_data + ccEntry._offset, ccEntry._size);
}
return nullptr;
}
void SaveArchive::load(Common::SeekableReadStream *stream) {
loadIndex(stream);
delete[] _data;
_data = new byte[stream->size()];
stream->seek(0);
stream->read(_data, stream->size());
// Load in the character stats and active party
Common::SeekableReadStream *chr = createReadStreamForMember("maze.chr");
Common::Serializer sChr(chr, nullptr);
_party->_roster.synchronize(sChr);
delete chr;
Common::SeekableReadStream *pty = createReadStreamForMember("maze.pty");
Common::Serializer sPty(pty, nullptr);
_party->synchronize(sPty);
delete pty;
}
void SaveArchive::reset(CCArchive *src) {
Common::MemoryWriteStreamDynamic saveFile(DisposeAfterUse::YES);
File fIn;
g_vm->_files->setGameCc(g_vm->getGameID() == GType_DarkSide ? 1 : 0);
const int RESOURCES[6] = { 0x2A0C, 0x2A1C, 0x2A2C, 0x2A3C, 0x284C, 0x2A5C };
for (int i = 0; i < 6; ++i) {
Common::String filename = Common::String::format("%.4x", RESOURCES[i]);
if (src->hasFile(filename)) {
// Read in the next resource
fIn.open(filename, *src);
byte *data = new byte[fIn.size()];
fIn.read(data, fIn.size());
// Copy it to the combined savefile resource
saveFile.write(data, fIn.size());
delete[] data;
fIn.close();
}
}
assert(saveFile.size() > 0);
Common::MemoryReadStream f(saveFile.getData(), saveFile.size());
load(&f);
}
/*------------------------------------------------------------------------*/
OutFile::OutFile(const Common::String &filename) :
_filename(filename), _backingStream(DisposeAfterUse::YES) {
_archive = File::_currentSave;
}
OutFile::OutFile(const Common::String &filename, SaveArchive *archive) :
_filename(filename), _archive(archive), _backingStream(DisposeAfterUse::YES) {
}
OutFile::OutFile(const Common::String &filename, int ccMode) :
_filename(filename), _backingStream(DisposeAfterUse::YES) {
g_vm->_files->setGameCc(ccMode);
_archive = File::_currentSave;
}
uint32 OutFile::write(const void *dataPtr, uint32 dataSize) {
return _backingStream.write(dataPtr, dataSize);
}
int32 OutFile::pos() const {
return _backingStream.pos();
}
void OutFile::finalize() {
uint16 id = BaseCCArchive::convertNameToId(_filename);
if (!_archive->_newData.contains(id))
_archive->_newData[id] = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
Common::MemoryWriteStreamDynamic *out = _archive->_newData[id];
out->write(_backingStream.getData(), _backingStream.size());
}
} // End of namespace Xeen
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