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authorStefan Boberg <[email protected]>2023-05-02 10:01:47 +0200
committerGitHub <[email protected]>2023-05-02 10:01:47 +0200
commit075d17f8ada47e990fe94606c3d21df409223465 (patch)
treee50549b766a2f3c354798a54ff73404217b4c9af /zenserver/frontend/zipfs.cpp
parentfix: bundle shouldn't append content zip to zen (diff)
downloadzen-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.cpp169
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