mirror of
https://github.com/ZDoom/Raze.git
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98 lines
No EOL
3.1 KiB
C++
98 lines
No EOL
3.1 KiB
C++
/*
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** file_mvl.cpp
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**
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** reads Descent2 .mvl files
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**
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**---------------------------------------------------------------------------
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** Copyright 2023 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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**
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*/
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#include "resourcefile.h"
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#include "fs_swap.h"
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namespace FileSys {
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using namespace byteswap;
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static bool OpenMvl(FResourceFile* rf, LumpFilterInfo* filter)
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{
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auto Reader = rf->GetContainerReader();
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auto count = Reader->ReadUInt32();
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auto Entries = rf->AllocateEntries(count);
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size_t pos = 8 + (17 * count); // files start after the directory
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for (uint32_t i = 0; i < count; i++)
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{
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char name[13];
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Reader->Read(&name, 13);
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name[12] = 0;
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uint32_t elength = Reader->ReadUInt32();
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Entries[i].Position = pos;
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Entries[i].CompressedSize = Entries[i].Length = elength;
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Entries[i].ResourceID = -1;
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Entries[i].FileName = rf->NormalizeFileName(name);
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pos += elength;
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}
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return true;
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}
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//==========================================================================
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//
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// File open
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//
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//==========================================================================
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FResourceFile* CheckMvl(const char* filename, FileReader& file, LumpFilterInfo* filter, FileSystemMessageFunc Printf, StringPool* sp)
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{
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char head[4];
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if (file.GetLength() >= 20)
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{
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file.Seek(0, FileReader::SeekSet);
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file.Read(&head, 4);
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if (!memcmp(head, "DMVL", 4))
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{
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auto rf = new FResourceFile(filename, file, sp);
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if (OpenMvl(rf, filter)) return rf;
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file = rf->Destroy();
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}
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file.Seek(0, FileReader::SeekSet);
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}
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return nullptr;
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}
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} |