diff options
Diffstat (limited to 'src/SBaseFileTable.cpp')
| -rw-r--r-- | src/SBaseFileTable.cpp | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/src/SBaseFileTable.cpp b/src/SBaseFileTable.cpp index a53d6a6..ca14693 100644 --- a/src/SBaseFileTable.cpp +++ b/src/SBaseFileTable.cpp @@ -385,20 +385,39 @@ static ULONGLONG DetermineArchiveSize_V4( return ArchiveSize;
}
-ULONGLONG FileOffsetFromMpqOffset(TMPQArchive * ha, ULONGLONG MpqOffset)
+ULONGLONG GetFileOffsetMask(TMPQArchive * ha)
{
+ ULONGLONG FileOffsetMask = (ULONGLONG)(-1);
+
+ // Sanity checks
+ assert(ha != NULL);
+ assert(ha->pHeader != NULL);
+
+ // MPQs of format 1 are 32-bit only
if(ha->pHeader->wFormatVersion == MPQ_FORMAT_VERSION_1)
- {
- // For MPQ archive v1, any file offset is only 32-bit
- return (ULONGLONG)((DWORD)ha->MpqPos + (DWORD)MpqOffset);
- }
- else
- {
- // For MPQ archive v2+, file offsets are full 64-bit
- return ha->MpqPos + MpqOffset;
- }
+ FileOffsetMask = (ULONGLONG)(DWORD)(-1);
+ return FileOffsetMask;
}
+ULONGLONG FileOffsetFromMpqOffset(TMPQArchive * ha, ULONGLONG MpqOffset)
+{
+ return (ha->MpqPos + MpqOffset) & ha->FileOffsetMask;
+}
+
+//ULONGLONG FileOffsetFromMpqOffset(TMPQArchive * ha, ULONGLONG MpqOffset)
+//{
+// if(ha->pHeader->wFormatVersion == MPQ_FORMAT_VERSION_1)
+// {
+// // For MPQ archive v1, any file offset is only 32-bit
+// return (ULONGLONG)((DWORD)ha->MpqPos + (DWORD)MpqOffset);
+// }
+// else
+// {
+// // For MPQ archive v2+, file offsets are full 64-bit
+// return ha->MpqPos + MpqOffset;
+// }
+//}
+
ULONGLONG CalculateRawSectorOffset(
TMPQFile * hf,
DWORD dwSectorOffset)
@@ -418,9 +437,7 @@ ULONGLONG CalculateRawSectorOffset( // For MPQs version 1.0, the offset is purely 32-bit
//
- RawFilePos = hf->RawFilePos + dwSectorOffset;
- if(hf->ha->pHeader->wFormatVersion == MPQ_FORMAT_VERSION_1)
- RawFilePos = (DWORD)hf->ha->MpqPos + (DWORD)hf->pFileEntry->ByteOffset + dwSectorOffset;
+ RawFilePos = (hf->RawFilePos + dwSectorOffset) & hf->ha->FileOffsetMask;
// We also have to add patch header size, if patch header is present
if(hf->pPatchInfo != NULL)
|