#616 Command line tool should infer the input file from the cuesheet

[elmimmo]

Command line tool should infer the input file to split with -c cuesheet from the cuesheet itself.

Description:

Cuesheets created by XLD itself contain the name of the WAVE file, which it creates adjacent to the cue sheet (therefore, with what could be considered a relative path to the cuesheet). And yet, the command line tool requires both -c cuesheet and the path to the file to split it with as arguments. It should therefore infer the file to split from the cuesheet itself if it does mention the file and exists with a path relative to the cuesheet, and the file input argument is ommited.

Steps to reproduce:

1. Run the following command in Terminal with a cuesheet and audio file created by XLD:

xld -c <cue-sheet></cue-sheet>

Expected results:

XLD should split the file specified within the cuesheet with said cuesheet.

Actual results:

Nothing except the usage message being printed.

Versions:

• XLD 20250302
• macOS 15.4.1 (24E263)