iroga-0.2.0 is not a library.

Iroga

Command line application to pack a single directory into an IRO archive. The IRO archive is a format used in 7th heaven, a FF7 mod manager application

Usage

# Simple usage
iroga pack <DIR>

# For help information
iroga --help

IRO format

Offset	Size	Description
0x00	20	IRO Header
0x20	(20 + L) * N	File indexing section
0x20 + (20 + L) * N	B * N	Data section

N is the number of files, L is the dynamic length of file paths, B is the dynamic byte length of the files

IRO Header

Offset	Size	Description
0x00	4	`IROS` constant text in ASCII
0x04	4	Version (latest version: `0x10002`)
0x08	4	Flags (`0`: full IRO, `1`: patch)
0x0C	4	Size of IRO header (always `16`)
0x10	4	Number of files inside the archive

File indexing section

Section repeated for each file inside the archive

Offset	Size	Description
0x00	2	Length of this section (`filepath_length + 20`)
0x02	2	Length of the file path
0x04	L	File path in unicode UTF16
0x04 + L	4	File flags (`0`: Non-compressed, other unimplemented)
0x04 + L + 0x04	8	IRO archive offset pointing to the related file in data section
0x04 + L + 0x0C	4	Length of the data

Data section