diff options
| author | Stefan Boberg <[email protected]> | 2023-05-02 10:01:47 +0200 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-05-02 10:01:47 +0200 |
| commit | 075d17f8ada47e990fe94606c3d21df409223465 (patch) | |
| tree | e50549b766a2f3c354798a54ff73404217b4c9af /zenserver/frontend/zipfs.cpp | |
| parent | fix: bundle shouldn't append content zip to zen (diff) | |
| download | zen-075d17f8ada47e990fe94606c3d21df409223465.tar.xz zen-075d17f8ada47e990fe94606c3d21df409223465.zip | |
moved source directories into `/src` (#264)
* moved source directories into `/src`
* updated bundle.lua for new `src` path
* moved some docs, icon
* removed old test trees
Diffstat (limited to 'zenserver/frontend/zipfs.cpp')
| -rw-r--r-- | zenserver/frontend/zipfs.cpp | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/zenserver/frontend/zipfs.cpp b/zenserver/frontend/zipfs.cpp deleted file mode 100644 index f9c2bc8ff..000000000 --- a/zenserver/frontend/zipfs.cpp +++ /dev/null @@ -1,169 +0,0 @@ -// Copyright Epic Games, Inc. All Rights Reserved. - -#include "zipfs.h" - -namespace zen { - -////////////////////////////////////////////////////////////////////////// -namespace { - -#if ZEN_COMPILER_MSC -# pragma warning(push) -# pragma warning(disable : 4200) -#endif - - using ZipInt16 = uint16_t; - - struct ZipInt32 - { - operator uint32_t() const { return *(uint32_t*)Parts; } - uint16_t Parts[2]; - }; - - struct EocdRecord - { - enum : uint32_t - { - Magic = 0x0605'4b50, - }; - ZipInt32 Signature; - ZipInt16 ThisDiskIndex; - ZipInt16 CdStartDiskIndex; - ZipInt16 CdRecordThisDiskCount; - ZipInt16 CdRecordCount; - ZipInt32 CdSize; - ZipInt32 CdOffset; - ZipInt16 CommentSize; - char Comment[]; - }; - - struct CentralDirectoryRecord - { - enum : uint32_t - { - Magic = 0x0201'4b50, - }; - - ZipInt32 Signature; - ZipInt16 VersionMadeBy; - ZipInt16 VersionRequired; - ZipInt16 Flags; - ZipInt16 CompressionMethod; - ZipInt16 LastModTime; - ZipInt16 LastModDate; - ZipInt32 Crc32; - ZipInt32 CompressedSize; - ZipInt32 OriginalSize; - ZipInt16 FileNameLength; - ZipInt16 ExtraFieldLength; - ZipInt16 CommentLength; - ZipInt16 DiskIndex; - ZipInt16 InternalFileAttr; - ZipInt32 ExternalFileAttr; - ZipInt32 Offset; - char FileName[]; - }; - - struct LocalFileHeader - { - enum : uint32_t - { - Magic = 0x0403'4b50, - }; - - ZipInt32 Signature; - ZipInt16 VersionRequired; - ZipInt16 Flags; - ZipInt16 CompressionMethod; - ZipInt16 LastModTime; - ZipInt16 LastModDate; - ZipInt32 Crc32; - ZipInt32 CompressedSize; - ZipInt32 OriginalSize; - ZipInt16 FileNameLength; - ZipInt16 ExtraFieldLength; - char FileName[]; - }; - -#if ZEN_COMPILER_MSC -# pragma warning(pop) -#endif - -} // namespace - -////////////////////////////////////////////////////////////////////////// -ZipFs::ZipFs(IoBuffer&& Buffer) -{ - MemoryView View = Buffer.GetView(); - - uint8_t* Cursor = (uint8_t*)(View.GetData()) + View.GetSize(); - if (View.GetSize() < sizeof(EocdRecord)) - { - return; - } - - const auto* EocdCursor = (EocdRecord*)(Cursor - sizeof(EocdRecord)); - - // It is more correct to search backwards for EocdRecord::Magic as the - // comment can be of a variable length. But here we're not going to support - // zip files with comments. - if (EocdCursor->Signature != EocdRecord::Magic) - { - return; - } - - // Zip64 isn't supported either - if (EocdCursor->ThisDiskIndex == 0xffff) - { - return; - } - - Cursor = (uint8_t*)EocdCursor - uint32_t(EocdCursor->CdOffset) - uint32_t(EocdCursor->CdSize); - - const auto* CdCursor = (CentralDirectoryRecord*)(Cursor + EocdCursor->CdOffset); - for (int i = 0, n = EocdCursor->CdRecordCount; i < n; ++i) - { - const CentralDirectoryRecord& Cd = *CdCursor; - - bool Acceptable = true; - Acceptable &= (Cd.OriginalSize > 0); // has some content - Acceptable &= (Cd.CompressionMethod == 0); // is stored uncomrpessed - if (Acceptable) - { - const uint8_t* Lfh = Cursor + Cd.Offset; - if (uintptr_t(Lfh - Cursor) < View.GetSize()) - { - std::string_view FileName(Cd.FileName, Cd.FileNameLength); - m_Files.insert(std::make_pair(FileName, FileItem{Lfh, size_t(0)})); - } - } - - uint32_t ExtraBytes = Cd.FileNameLength + Cd.ExtraFieldLength + Cd.CommentLength; - CdCursor = (CentralDirectoryRecord*)(Cd.FileName + ExtraBytes); - } - - m_Buffer = std::move(Buffer); -} - -////////////////////////////////////////////////////////////////////////// -IoBuffer -ZipFs::GetFile(const std::string_view& FileName) const -{ - FileMap::iterator Iter = m_Files.find(FileName); - if (Iter == m_Files.end()) - { - return {}; - } - - FileItem& Item = Iter->second; - if (Item.GetSize() > 0) - { - return IoBuffer(IoBuffer::Wrap, Item.GetData(), Item.GetSize()); - } - - const auto* Lfh = (LocalFileHeader*)(Item.GetData()); - Item = MemoryView(Lfh->FileName + Lfh->FileNameLength + Lfh->ExtraFieldLength, Lfh->OriginalSize); - return IoBuffer(IoBuffer::Wrap, Item.GetData(), Item.GetSize()); -} - -} // namespace zen |