mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-10 23:01:50 +00:00
- generate a hash identifier for each loaded resource file.
This is not useful by itself but can be used for adding new features later, e.g. mod-wide compatibility settings or file specific lump replacement or injection.
This commit is contained in:
parent
bcef440511
commit
31aa855a51
8 changed files with 42 additions and 2 deletions
|
@ -316,6 +316,7 @@ bool F7ZFile::Open(bool quiet)
|
|||
|
||||
if (!quiet && !batchrun) Printf(", %d lumps\n", NumLumps);
|
||||
|
||||
GenerateHash();
|
||||
PostProcessArchive(&Lumps[0], sizeof(F7ZLump));
|
||||
return true;
|
||||
}
|
||||
|
|
|
@ -120,7 +120,7 @@ bool FGrpFile::Open(bool quiet)
|
|||
Lumps[i].LumpNameSetup(fileinfo[i].NameWithZero);
|
||||
}
|
||||
if (!quiet && !batchrun) Printf(", %d lumps\n", NumLumps);
|
||||
|
||||
GenerateHash();
|
||||
delete[] fileinfo;
|
||||
return true;
|
||||
}
|
||||
|
|
|
@ -113,7 +113,7 @@ bool FPakFile::Open(bool quiet)
|
|||
Lumps[i].LumpSize = LittleLong(fileinfo[i].filelen);
|
||||
Lumps[i].CheckEmbedded();
|
||||
}
|
||||
|
||||
GenerateHash();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
|
@ -184,6 +184,7 @@ bool FRFFFile::Open(bool quiet)
|
|||
}
|
||||
}
|
||||
delete[] lumps;
|
||||
GenerateHash();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
|
@ -203,6 +203,7 @@ bool FWadFile::Open(bool quiet)
|
|||
}
|
||||
|
||||
delete[] fileinfo;
|
||||
GenerateHash(); // Do this before the lump processing below.
|
||||
|
||||
if (!quiet)
|
||||
{
|
||||
|
|
|
@ -363,6 +363,7 @@ bool FZipFile::Open(bool quiet)
|
|||
|
||||
if (!quiet && !batchrun) Printf(TEXTCOLOR_NORMAL ", %d lumps\n", NumLumps);
|
||||
|
||||
GenerateHash();
|
||||
PostProcessArchive(&Lumps[0], sizeof(FZipLump));
|
||||
return true;
|
||||
}
|
||||
|
|
|
@ -41,6 +41,7 @@
|
|||
#include "gi.h"
|
||||
#include "doomstat.h"
|
||||
#include "doomtype.h"
|
||||
#include "md5.h"
|
||||
|
||||
|
||||
//==========================================================================
|
||||
|
@ -353,6 +354,39 @@ int lumpcmp(const void * a, const void * b)
|
|||
return rec1->FullName.CompareNoCase(rec2->FullName);
|
||||
}
|
||||
|
||||
//==========================================================================
|
||||
//
|
||||
// FResourceFile :: GenerateHash
|
||||
//
|
||||
// Generates a hash identifier for use in file identification.
|
||||
// Potential uses are mod-wide compatibility settings or localization add-ons.
|
||||
// This only hashes the lump directory but not the actual content
|
||||
//
|
||||
//==========================================================================
|
||||
|
||||
void FResourceFile::GenerateHash()
|
||||
{
|
||||
// hash the lump directory after sorting
|
||||
|
||||
Hash.Format(("%08X-%04X-"), (unsigned)Reader.GetLength(), NumLumps);
|
||||
|
||||
MD5Context md5;
|
||||
|
||||
uint8_t digest[16];
|
||||
for(uint32_t i = 0; i < NumLumps; i++)
|
||||
{
|
||||
auto lump = GetLump(i);
|
||||
md5.Update((const uint8_t*)lump->Name, strlen(lump->Name) + 1); // +1 to hash the terminating 0 as well.
|
||||
md5.Update((const uint8_t*)lump->FullName.GetChars(), lump->FullName.Len() + 1);
|
||||
md5.Update((const uint8_t*)&lump->LumpSize, 4);
|
||||
}
|
||||
md5.Final(digest);
|
||||
for (auto c : digest)
|
||||
{
|
||||
Hash.AppendFormat("%02X", c);
|
||||
}
|
||||
}
|
||||
|
||||
//==========================================================================
|
||||
//
|
||||
// FResourceFile :: PostProcessArchive
|
||||
|
|
|
@ -85,11 +85,13 @@ public:
|
|||
FString FileName;
|
||||
protected:
|
||||
uint32_t NumLumps;
|
||||
FString Hash;
|
||||
|
||||
FResourceFile(const char *filename);
|
||||
FResourceFile(const char *filename, FileReader &r);
|
||||
|
||||
// for archives that can contain directories
|
||||
void GenerateHash();
|
||||
void PostProcessArchive(void *lumps, size_t lumpsize);
|
||||
|
||||
private:
|
||||
|
|
Loading…
Reference in a new issue