mirror of
https://github.com/libretro/scummvm.git
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313 lines
8.1 KiB
C++
313 lines
8.1 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "hopkins/files.h"
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#include "hopkins/hopkins.h"
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#include "hopkins/globals.h"
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#include "common/system.h"
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#include "common/debug.h"
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#include "common/file.h"
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#include "common/str.h"
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#include "common/savefile.h"
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namespace Hopkins {
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FileManager::FileManager() {
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}
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void FileManager::setParent(HopkinsEngine *vm) {
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_vm = vm;
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}
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/**
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* Load a file
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*/
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byte *FileManager::loadFile(const Common::String &file) {
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Common::File f;
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if (!f.open(file))
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error("Error opening %s", file.c_str());
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// Allocate space for the file contents
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size_t filesize = f.size();
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byte *data = _vm->_globals.allocMemory(filesize);
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if (!data)
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error("Error allocating space for file being loaded - %s", file.c_str());
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readStream(f, data, filesize);
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f.close();
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return data;
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}
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/**
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* Read a given number of bytes from a Stream into a pre-allocated buffer
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*/
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int FileManager::readStream(Common::ReadStream &stream, void *buf, size_t nbytes) {
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return stream.read(buf, nbytes);
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}
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/**
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* Initialize censorship based on blood.dat file
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*/
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void FileManager::initCensorship() {
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_vm->_globals._censorshipFl = false;
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// If file doesn't exist, fallback to uncensored
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if (!fileExists(_vm->_globals.HOPSYSTEM, "BLOOD.DAT")) {
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constructFilename(_vm->_globals.HOPSYSTEM, "BLOOD.DAT");
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char *data = (char *)loadFile(_vm->_globals._curFilename);
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if ((data[6] == 'u' && data[7] == 'k') || (data[6] == 'U' && data[7] == 'K'))
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_vm->_globals._censorshipFl = true;
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free(data);
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}
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}
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/**
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* Construct a filename based on a suggested folder and filename.
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* @param folder Folder to use. May be overriden for animations.
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* @param file Filename
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*/
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void FileManager::constructFilename(const Common::String &folder, const Common::String &file) {
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Common::String folderToUse = folder;
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// A lot of the code in the original engine based on COPIE_SEQ was used to determine
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// whether a file resided on the CD or hard disk. Since the ScummVM implementation
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// requires all the files in the same location, we only need to do a somewhat simpler
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// check for animations that don't exist in the ANM folder, but rather in special
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// sub-folders depending on the physical screen resolution being used.
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if (folder == _vm->_globals.HOPANM) {
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switch (_vm->_globals.SVGA) {
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case 1:
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if (fileExists(folderToUse, file))
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folderToUse = _vm->_globals.HOPTSVGA;
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break;
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case 2:
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if (fileExists(folderToUse, file))
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folderToUse = _vm->_globals.HOPSVGA;
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break;
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case 3:
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if (fileExists(folderToUse, file))
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folderToUse = _vm->_globals.HOPVGA;
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break;
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default:
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break;
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}
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}
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_vm->_globals._curFilename = Common::String::format("%s/%s", folderToUse.c_str(), file.c_str());
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}
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/**
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* Construct Linux filename
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*/
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Common::String FileManager::constructLinuxFilename(const Common::String &file) {
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_vm->_globals._curFilename = file;
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return file;
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}
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/**
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* Check if a file is present in a given (optional) folder
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*/
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bool FileManager::fileExists(const Common::String &folder, const Common::String &file) {
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Common::String filename = folder.empty() ? file :
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Common::String::format("%s/%s", folder.c_str(), file.c_str());
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Common::File f;
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return !f.exists(filename);
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}
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/**
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* Search file in Cat file
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*/
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byte *FileManager::searchCat(const Common::String &file, int a2) {
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byte *ptr = NULL;
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Common::File f;
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Common::String filename = file;
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filename.toUppercase();
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switch (a2) {
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case 1:
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constructFilename(_vm->_globals.HOPLINK, "RES_INI.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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constructFilename(_vm->_globals.HOPLINK, "RES_INI.RES");
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break;
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case 2:
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constructFilename(_vm->_globals.HOPLINK, "RES_REP.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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constructFilename(_vm->_globals.HOPLINK, "RES_REP.RES");
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break;
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case 3:
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constructFilename(_vm->_globals.HOPLINK, "RES_LIN.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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constructFilename(_vm->_globals.HOPLINK, "RES_LIN.RES");
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break;
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case 4:
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constructFilename(_vm->_globals.HOPANIM, "RES_ANI.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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constructFilename(_vm->_globals.HOPANIM, "RES_ANI.RES");
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break;
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case 5:
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constructFilename(_vm->_globals.HOPANIM, "RES_PER.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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constructFilename(_vm->_globals.HOPANIM, "RES_PER.RES");
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break;
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case 6:
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constructFilename(_vm->_globals.HOPIMAGE, "PIC.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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break;
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case 7:
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constructFilename(_vm->_globals.HOPANIM, "RES_SAN.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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break;
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case 8:
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constructFilename(_vm->_globals.HOPLINK, "RES_SLI.CAT");
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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break;
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case 9:
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if (_vm->getPlatform() == Common::kPlatformOS2 || _vm->getPlatform() == Common::kPlatformBeOS)
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_vm->_fileManager.constructFilename(_vm->_globals.HOPVOICE, "ENG_VOI.RES");
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// Win95 and Linux versions uses another set of names
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else {
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switch (_vm->_globals._language) {
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case LANG_EN:
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constructFilename(_vm->_globals.HOPLINK, "RES_VAN.CAT");
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break;
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case LANG_FR:
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constructFilename(_vm->_globals.HOPLINK, "RES_VFR.CAT");
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break;
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case LANG_SP:
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constructFilename(_vm->_globals.HOPLINK, "RES_VES.CAT");
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break;
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}
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}
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if (!f.exists(_vm->_globals._curFilename))
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return g_PTRNUL;
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ptr = loadFile(_vm->_globals._curFilename);
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break;
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// Deliberate fall-through to
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default:
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break;
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}
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// Scan for an entry in the catalogue
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byte *result;
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bool matchFlag = false;
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int offsetVal = 0;
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while (!matchFlag) {
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Common::String name = (const char *)ptr + offsetVal;
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if (name == filename) {
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// Found entry for file, so get it's details from the catalogue entry
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const byte *pData = ptr + offsetVal;
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_vm->_globals._catalogPos = READ_LE_UINT32(pData + 15);
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_vm->_globals._catalogSize = READ_LE_UINT32(pData + 19);
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matchFlag = true;
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}
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if (name == "FINIS") {
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_vm->_globals.freeMemory(ptr);
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return g_PTRNUL;
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}
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offsetVal += 23;
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}
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_vm->_globals.freeMemory(ptr);
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// TODO: Double check whether this really should be an unsigned int comparison
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if ((uint16)(a2 - 6) > 1 && (uint16)(a2 - 8) > 1) {
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if (!f.open(_vm->_globals._curFilename))
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error("CHARGE_FICHIER");
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f.seek(_vm->_globals._catalogPos);
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byte *catData = _vm->_globals.allocMemory(_vm->_globals._catalogSize);
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if (catData == g_PTRNUL)
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error("CHARGE_FICHIER");
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readStream(f, catData, _vm->_globals._catalogSize);
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f.close();
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result = catData;
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} else {
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result = NULL;
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}
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return result;
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}
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/**
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* Returns the size of a file. Throws an error if the file can't be found
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*/
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uint32 FileManager::fileSize(const Common::String &filename) {
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Common::File f;
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uint32 size;
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if (!f.open(filename))
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error("Could not find file %s", filename.c_str());
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size = f.size();
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f.close();
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return size;
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}
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} // End of namespace Hopkins
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