cfb-reader

Read content of compound file binary format

Binary definition

Compound file binary format Official document

Sectors	Header	DiFAT	FAT Storage	Directory	MiniFAT	Mini Stream	Normal Stream
Content	Basic info of various Structure	A list of all FAT Storage in the file	The next sector position at the specified index (except DiFAT and FAT Storage itself)	The directory structure that the file packed	The next position at the specified index (in the context of mini stream strucutre)	Mini stream blobs (<4096B)	Regular blobs (>4096B)
Starting Location	0	Specified in header	DiFAT[0]	Specified in header	Specified in header	Specified by the root entry of directory entries (at index 0)	Specified in each entry
Amount	1 sector	Specified in Header	Specified in header (not sure)	Not specified (v4: in header)	Specified in Header	Specified by the root entry of directory entries	Not specified
Sub-structure	N/A	FAT Storage's index in FAT	Next position in FAT chain of a sector	An entry specified various properties of the object	Next position in mini stream chain of a mini sector	Part of a mini object	Part of a regular object
Sub-strucutre Type	N/A	uint32	uint32	Directory Entry	uint32	buffer	buffer
Sub-structure Size	N/A	4 bytes	4 bytes	128 bytes	4 bytes	64 bytes	Sector size

Note on package patches

• unbuild is patched to forcely bundle dependencies for browser
• binspector is patched to resolve the error casued by incorrect 'module' in its package.json

License

MIT License