This is a set of PHP scripts designed to parse (MHWK/Mohawk archive) files from the Myst/Riven games from Cyan studios.
The view_mhk.php file shows details about a Mohawk archive file (outputs HTML; use like view_mhk.php?f=MYST.DAT), showing which data can be found in which ranges of the file.
If you have a set of game data files, use the parse_mhk.php file to find and extract all the tBMP resources out of it (creates a folder called output and creates a *.tBMP file for each resource in it).
Those extracted tBMP files can then be parsed using the parse_tBMP.php script (outputs a *.png file in the same location as the *.tBMP file read). Currently it only parses Riven-compressed data (8-bpp, non LZ compression, no secondary compression).
If you have a set of game data files, use the parse_mhk.php file to find and extract all the WDIB resources out of it (creates a folder called output and creates a *.WDIB file for each resource in it).
Those extracted WDIB files can then be parsed using the parse_wdib.php script (outputs a *.png file in the same location as the *.WDIB file read). Currently it only parses WDIB resources that contain BMP data (a few of them contain PICT files) that are LZ-compressed. The splay_wdib.php script gives more information about a WDIB file, showing the "runs" of data that comprise the compression algorithm, and gives notes on which pixels of the image they're affecting.
If you have a BMP file you want compressed into a WDIB, the bmp2wdib.php script will do that (outputs a *.WDIB file in the same location as the *.bmp file read).