ea-big is a rust library to open EA's .big game files it provides an easy way to read the file header and indices table as well as an easy to use abstraction to read the embedded files.
Add the library to your Cargo.toml like so:
ea-big = "0.1"
Calling ea_big::from_reader on a type implementing the Read trait will return a Result with the file Header and a Vec of the entries in the index table.
ea_big::open_file takes a type implementing the Read and Seek traits and a reference to a Entry in the Index table and provides a type that also implements Read and Seek, it works like a normal file but it only refers to the data in the embedded file indicated by the table entry.
The examples provides a program that can read a .big file and print the header and indices table to the terminal to run use:
cargo run --example file-decoder -- FILE
Where FILE is the .big file