Shaw's Nightmare Archive Format
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Shaw's Nightmare Archive Format
| Format type | Archive |
|---|---|
| Max files | 4,294,967,295 |
| File Allocation Table (FAT) | End |
| Filenames? | Y |
| Metadata? | None |
| Supports compression? | No |
| Supports encryption? | No |
| Supports subdirectories? | No |
| Hidden data? | Yes |
| Games |
The Shaw's Nightmare Archive Format stores the archive headers first, file data next, and file index last.
File Format
Archive Header
If the header is not "DAT\x1a", it isn't a valid archive.
| Data type | Bytes | Name | Description |
|---|---|---|---|
| char[4] | 4 | magic | Each archive starts with the magic/signature "DAT\x1a" |
| UINT16LE | 2 | numitems | How many files in the archive |
| UINT32LE | 4 | index_offset | Offset for the file index in the archive |
| UINT32LE | 4 | index_size | size of the index in bytes |
Total size of header is 14 bytes
File Header
File data is stored at the top of the archive after the header and before the file index.
| Data type | Bytes | Name | Description |
|---|---|---|---|
| char[13] | 13 | name | Filenames are right padded with 0x0 to 13 bytes |
| BYTE[3] | 3 | padding | 3 bytes of padding |
| UINT32LE | 4 | size | Size of file |
| UINT32LE | 4 | offset | Offset for the file. |
Total size of header is 24 bytes
Tools
The following tools are able to work with files in this format.
| Name | Platform | Extract files? | Decompress on extract? | Create new? | Modify? | Compress on insert? | Access hidden data? | Edit metadata? | Notes |
|---|---|---|---|---|---|---|---|---|---|
| SNE | DOS | Yes | N/A | No | No | N/A | No | N/A | Coded in the Fennel language by parlortricks |
| SNP | Windows/Linux | No | N/A | Yes | No | N/A | No | N/A | Coded in the Fennel language by parlortricks |