mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 21:31:53 +00:00
113 lines
3.2 KiB
C++
113 lines
3.2 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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*
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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, 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 "common/debug.h"
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#include "common/file.h"
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#include "common/substream.h"
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#include "petka/petka.h"
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#include "petka/file_mgr.h"
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namespace Petka {
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bool FileMgr::openStore(const Common::String &name) {
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Common::SharedPtr<Common::File> file(new Common::File());
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if (name.empty() || !file->open(name) || file->readUint32BE() != MKTAG('S', 't', 'O', 'R')) {
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return false;
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}
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const uint32 tableOffset = file->readUint32LE();
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if (!file->seek(tableOffset)) {
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return false;
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}
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const uint32 tableSize = file->size() - file->pos();
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Common::ScopedPtr<Common::SeekableReadStream> stream(file->readStream(tableSize));
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if (stream->size() != (int)tableSize)
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return false;
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_stores.push_back(Store());
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Store &store = _stores.back();
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store.file = file;
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store.descriptions.resize(stream->readUint32LE());
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for (auto &description : store.descriptions) {
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stream->skip(4);
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description.offset = stream->readUint32LE();
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description.size = stream->readUint32LE();
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}
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for (auto &description : store.descriptions) {
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char ch;
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while ((ch = stream->readByte()) != '\0') {
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description.name += ch;
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}
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}
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debugC(kPetkaDebugResources, "FileMgr: opened store %s (files count: %d)", name.c_str(), store.descriptions.size());
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return true;
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}
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void FileMgr::closeStore(const Common::String &name) {
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for (auto it = _stores.begin(); it != _stores.end(); ++it) {
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if (it->file->getName() == name) {
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_stores.erase(it);
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return;
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}
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}
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}
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void FileMgr::closeAll() {
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_stores.clear();
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}
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static Common::String formPath(Common::String name) {
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for (uint i = 0; i < name.size(); ++i) {
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if (name[i] == '\\') {
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name.setChar('/', i);
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}
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}
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return name;
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}
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Common::SeekableReadStream *FileMgr::getFileStream(const Common::String &name) {
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Common::ScopedPtr<Common::File> file(new Common::File());
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if (file->open(formPath(name))) {
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debugC(kPetkaDebugResources, "FileMgr: %s is opened from game directory", name.c_str());
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return file.release();
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}
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for (auto &store : _stores) {
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for (auto &resource : store.descriptions) {
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if (resource.name.compareToIgnoreCase(name) == 0)
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return new Common::SafeSeekableSubReadStream(store.file.get(), resource.offset, resource.offset + resource.size);
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}
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}
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debugC(kPetkaDebugResources, "FileMgr: %s not found", name.c_str());
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return nullptr;
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}
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} // End of namespace Petka
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