LINK Archive

Code to unpack

The Link Archive is an archive format used in Pokemon Conquest (I assume it was made for this game as the word LINK is possibly a reference to the game). It seems to be made to group data of an image. Usually has the file extension G2GR. They tend to contain some of the Nintendo standard file formats:

• RNAN (Nintendo Animation Resource)
• RGCN (Nintendo Character Graphic)
• RECN (Nintendo Cell Resource)
• RLCN (Nintendo Color Resource)

The header has the structure:

Offset	Value Type	Used for
0x00	4 byte magic number	This is just the Utf8 string "LINK"
0x04	Int32	Number of files
0x08	Int32	Multiplier used to scale the file offsets
0x12	4 bytes	Always 0, maybe padding to make the header 16 bytes?

After that is a file allocation table, with each 8 byte entry containing:

Offset	Value Type	Used for
0x00	Int32	Scaled down offset of file
0x04	Int32	Length of file

To get a file, you go to its index in the file allocation table, then you multiply the offset in its entry by the multiplier found in the header.

Weirdly, there does seem to be some zero width files.