This is a Java implementation of the various compression algorithms used by RISC OS archivers.
Supported archive formats are:
riscosarc can not create archives, it can only extract files from them.
java riscosarc [opt] [archive file]
where opt is:
-l: list contents of archive
-v: verbose listing
-x: extract files from archive
Files are extracted with the RISC OS filetype appended to the name.
There is precious little documentation, and probably no comments in the code.
./build.sh