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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 "hopkins/files.h"
#include "hopkins/hopkins.h"
#include "hopkins/globals.h"
#include "common/system.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/str.h"
#include "common/savefile.h"
namespace Hopkins {
FileManager::FileManager(HopkinsEngine *vm) {
_vm = vm;
_catalogPos = 0;
_catalogSize = 0;
}
/**
* Load a file
*/
byte *FileManager::loadFile(const Common::String &file) {
Common::File f;
if (!f.open(file))
error("Error opening %s", file.c_str());
// Allocate space for the file contents
size_t filesize = f.size();
byte *data = _vm->_globals->allocMemory(filesize);
if (!data)
error("Error allocating space for file being loaded - %s", file.c_str());
readStream(f, data, filesize);
f.close();
return data;
}
/**
* Read a given number of bytes from a Stream into a pre-allocated buffer
*/
int FileManager::readStream(Common::ReadStream &stream, void *buf, size_t nbytes) {
return stream.read(buf, nbytes);
}
/**
* Initialize censorship based on blood.dat file
*/
void FileManager::initCensorship() {
_vm->_globals->_censorshipFl = false;
// If file doesn't exist, fallback to uncensored
if (fileExists("BLOOD.DAT")) {
char *data = (char *)loadFile("BLOOD.DAT");
if ((data[6] == 'u' && data[7] == 'k') || (data[6] == 'U' && data[7] == 'K'))
_vm->_globals->_censorshipFl = true;
_vm->_globals->freeMemory((byte *)data);
}
}
/**
* Check if a file is present
*/
bool FileManager::fileExists(const Common::String &file) {
Common::File f;
return f.exists(file);
}
/**
* Search file in Cat file
*/
byte *FileManager::searchCat(const Common::String &file, CatMode mode) {
byte *ptr = NULL;
Common::File f;
Common::String filename = file;
Common::String secondaryFilename = "";
filename.toUppercase();
switch (mode) {
case RES_INI:
if (!f.exists("RES_INI.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_INI.CAT");
secondaryFilename = "RES_INI.RES";
break;
case RES_REP:
if (!f.exists("RES_REP.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_REP.CAT");
secondaryFilename = "RES_REP.RES";
break;
case RES_LIN:
if (!f.exists("RES_LIN.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_LIN.CAT");
secondaryFilename = "RES_LIN.RES";
break;
case RES_PER:
if (!f.exists("RES_PER.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_PER.CAT");
secondaryFilename = "RES_PER.RES";
break;
case RES_PIC:
if (!f.exists("PIC.CAT"))
return g_PTRNUL;
ptr = loadFile("PIC.CAT");
break;
case RES_SAN:
if (!f.exists("RES_SAN.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_SAN.CAT");
break;
case RES_SLI:
if (!f.exists("RES_SLI.CAT"))
return g_PTRNUL;
ptr = loadFile("RES_SLI.CAT");
break;
case RES_VOI: {
Common::String tmpFilename;
if (_vm->getPlatform() == Common::kPlatformOS2 || _vm->getPlatform() == Common::kPlatformBeOS)
tmpFilename = "ENG_VOI.CAT";
// Win95 and Linux versions uses another set of names
else {
switch (_vm->_globals->_language) {
case LANG_EN:
tmpFilename = "RES_VAN.CAT";
break;
case LANG_FR:
tmpFilename = "RES_VFR.CAT";
break;
case LANG_SP:
tmpFilename = "RES_VES.CAT";
break;
}
}
if (!f.exists(tmpFilename))
return g_PTRNUL;
ptr = loadFile(tmpFilename);
break;
}
// Deliberate fall-through to
default:
break;
}
// Scan for an entry in the catalogue
byte *result;
bool matchFlag = false;
int offsetVal = 0;
while (!matchFlag) {
Common::String name = (const char *)ptr + offsetVal;
if (name == filename) {
// Found entry for file, so get it's details from the catalogue entry
const byte *pData = ptr + offsetVal;
_catalogPos = READ_LE_UINT32(pData + 15);
_catalogSize = READ_LE_UINT32(pData + 19);
matchFlag = true;
}
if (name == "FINIS") {
_vm->_globals->freeMemory(ptr);
return g_PTRNUL;
}
offsetVal += 23;
}
_vm->_globals->freeMemory(ptr);
if (secondaryFilename != "") {
if (!f.open(secondaryFilename))
error("CHARGE_FICHIER");
f.seek(_catalogPos);
byte *catData = _vm->_globals->allocMemory(_catalogSize);
if (catData == g_PTRNUL)
error("CHARGE_FICHIER");
readStream(f, catData, _catalogSize);
f.close();
result = catData;
} else {
result = NULL;
}
return result;
}
/**
* Returns the size of a file. Throws an error if the file can't be found
*/
uint32 FileManager::fileSize(const Common::String &filename) {
Common::File f;
uint32 size;
if (!f.open(filename))
error("Could not find file %s", filename.c_str());
size = f.size();
f.close();
return size;
}
} // End of namespace Hopkins
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