93 lines
2.5 KiB
C++
93 lines
2.5 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "watchmaker/ll/ll_ffile.h"
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#include "common/substream.h"
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#include "watchmaker/ll/ll_system.h"
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namespace Watchmaker {
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const int MAX_NAME_LEN = 52;
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struct FileEntry {
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Common::String name;
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int32 offset;
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int32 time;
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int32 date;
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};
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FastFile::FastFile(const char *path) : _path(path) {
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auto stream = openFile(path);
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assert(stream);
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_numFiles = stream->readUint32LE();
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_files = new FileEntry[_numFiles] {};
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_totalSize = stream->size();
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for (int i = 0; i < _numFiles; i++) {
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char name[MAX_NAME_LEN] = {};
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stream->read(name, MAX_NAME_LEN);
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_files[i].name = name;
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_files[i].offset = stream->readUint32LE();
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_files[i].time = stream->readUint32LE();
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_files[i].date = stream->readUint32LE();
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for (auto it = _files[i].name.begin(); it != _files[i].name.end(); ++it) {
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if (*it == '\\') {
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*it = '/';
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}
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}
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}
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}
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FastFile::~FastFile() {
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delete[] _files;
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}
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Common::SharedPtr<Common::SeekableReadStream> FastFile::resolve(const char *filename) {
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Common::String converted = filename;
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int index = -1;
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//HACK
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if (converted.size() >= 2 && converted[0] == '.' && converted[1] == '/') {
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converted = converted.substr(2, converted.size() - 2);
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}
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for (int i = 0; i < _numFiles; i++) {
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if (_files[i].name.equalsIgnoreCase(converted)) {
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index = i;
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break;
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}
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}
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if (index == -1) {
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return nullptr;
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}
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const auto &entry = _files[index];
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int size = 0;
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if (index == _numFiles - 1) {
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size = _totalSize - entry.offset;
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} else {
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size = _files[index + 1].offset - entry.offset;
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}
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auto stream = openFile(_path, entry.offset, size);
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assert(stream);
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return Common::SharedPtr<Common::SeekableReadStream>(stream);
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}
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} // End of namespace Watchmaker
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