Sarc

Sarc is a file archive format. Files are typically accessed by a binary sorted by a hash value derived from a custom hash function. For a more detailed article, see: https://github.com/Kinnay/Nintendo-File-Formats/wiki/SARC-File-Format

Header

Offset	Size	Type	Description
0x0	0x4	u32	Magic ("SARC" in big endian)
0x4	0x2	u16	Size of header (0x14)
0x6	0x2	u16	Endianess (Always reads as 0xfeff in platform's native endian)
0x8	0x4	u32	Total file size
0xc	0x4	u32	File array offset
0x10	0x4	u32	Alignment
0x14	0x2	u16	Version
0x16	0x2	u16	Reserved

Sfat Section

The sfat section follows after the sarc header (header + size of header).

Sfat Header

Offset	Size	Type	Description
0x0	0x4	u32	Magic ("SFAT" in big endian)
0x4	0x2	u16	Size of header (0x14)
0x6	0x2	u16	File count
0x8	0x4	u32	Hash seed

Sfat Entry Array

The sfat entry array follows the sfat header (header + size of header). Array is sized by the sfat header file count, and is sorted by a custom hash derived from the hash seed in the sfat header.

Offset	Size	Type	Description
0x0	0x4	u32	File name hash
0x4	0x3	u24	File name offset (may be invalid)
0x7	0x1	u8	Number of file hash collisions
0x8	0x4	u32	File array start offset
0xc	0x4	u32	File array end offset

Sfnt Section

Following the sfat section is the sfnt section, a header preceding an array of file path of null-terminated strings.

Offset	Size	Type	Description
0x0	0x4	u32	Magic ("SFAT" in big endian)
0x4	0x2	u16	Size of header (0x8)
0x6	0x2	u16	Reserved