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set up the new Entries array.

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This commit is contained in:
Christoph Oelckers 2023-12-12 18:17:33 +01:00
commit ae1bd3c890
17 changed files with 346 additions and 49 deletions
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46
src/common/filesystem/source/file_zip.cpp
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@ -40,6 +40,7 @@
#include "ancientzip.h"
#include "fs_findfile.h"
#include "fs_swap.h"
#include "fs_stringpool.h"
namespace FileSys {
using namespace byteswap;
@ -75,7 +76,21 @@ static bool UncompressZipLump(char *Cache, FileReader &Reader, int Method, ptrdi
break;
}
// Fixme: These should also use a stream
case METHOD_IMPLODE_0:
case METHOD_IMPLODE_2:
case METHOD_IMPLODE_4:
case METHOD_IMPLODE_6:
{
FZipExploder exploder;
if (exploder.Explode((unsigned char*)Cache, (unsigned)LumpSize, Reader, (unsigned)CompressedSize, Method - METHOD_IMPLODE_MIN) == -1)
{
// decompression failed so zero the cache.
memset(Cache, 0, LumpSize);
}
break;
}
// This can go away once we are done with FResourceLump
case METHOD_IMPLODE:
{
FZipExploder exploder;
@ -311,6 +326,8 @@ bool FZipFile::Open(LumpFilterInfo* filter, FileSystemMessageFunc Printf)
dirptr = (char*)directory;
lump_p = Lumps;
AllocateEntries(NumLumps);
auto Entry = Entries;
for (uint32_t i = 0; i < NumLumps; i++)
{
FZipCentralDirectoryInfo *zip_fh = (FZipCentralDirectoryInfo *)dirptr;
@ -399,6 +416,26 @@ bool FZipFile::Open(LumpFilterInfo* filter, FileSystemMessageFunc Printf)
}
}
Entry->FileName = NormalizeFileName(name.c_str());
Entry->Length = UncompressedSize;
// The start of the Reader will be determined the first time it is accessed.
Entry->Flags = RESFF_FULLPATH | RESFF_NEEDFILESTART;
Entry->Method = uint8_t(zip_fh->Method);
if (Entry->Method != METHOD_STORED) Entry->Flags |= RESFF_COMPRESSED;
if (Entry->Method == METHOD_IMPLODE)
{
// merge the flags into the compression method to tag less data around.
if ((zip_fh->Flags & 6) == 2) Entry->Method = METHOD_IMPLODE_2;
else if ((zip_fh->Flags & 6) == 4) Entry->Method = METHOD_IMPLODE_4;
else if ((zip_fh->Flags & 6) == 6) Entry->Method = METHOD_IMPLODE_6;
else Entry->Method = METHOD_IMPLODE_0;
}
Entry->CRC32 = zip_fh->CRC32;
Entry->CompressedSize = CompressedSize;
Entry->Position = LocalHeaderOffset;
Entry++;
lump_p->LumpNameSetup(name.c_str(), stringpool);
lump_p->LumpSize = UncompressedSize;
lump_p->Owner = this;
@ -407,6 +444,13 @@ bool FZipFile::Open(LumpFilterInfo* filter, FileSystemMessageFunc Printf)
lump_p->NeedFileStart = true;
lump_p->Method = uint8_t(zip_fh->Method);
if (lump_p->Method != METHOD_STORED) lump_p->Flags |= LUMPF_COMPRESSED;
/*if (lump_p->Method == METHOD_IMPLODE)
{
// merge the flags into the compression method to tag less data around.
if ((zip_fh->Flags & 6) == 2) lump_p->Method = METHOD_IMPLODE_2;
if ((zip_fh->Flags & 6) == 4) lump_p->Method = METHOD_IMPLODE_4;
if ((zip_fh->Flags & 6) == 6) lump_p->Method = METHOD_IMPLODE_6;
}*/
lump_p->GPFlags = zip_fh->Flags;
lump_p->CRC32 = zip_fh->CRC32;
lump_p->CompressedSize = CompressedSize;