cue-munger is a CLI application that aims to ease some of the pain of working with cue sheets.
Cue sheets are quite awkward to handle with the standard UNIX tools because of their context-sensitive grammar; some lexical analysis is required to make sense of the format. Cuetools already exists for this purpose, but my experience with them is that they don't work very well: I rarely come across cue sheets libcue will actually parse, and their odd behaviour makes usage a frustrating experience. Anyway, reinventing the wheel is fun :)
With cue-munger, my approach has been founded on the recognition that processing such highly-structured data is a poor fit for shell scripting. So instead of creating a tool that delegates processing to others, it's more convenient to have a tool that is super simple to extend with whatever processing functionality you need.
cue-munger is written in Vala, and there are a couple of short steps required to add a new munger:
- Add a source file in
src/mungers/, containing a class that inherits fromBaseMunger(seemusicbrainz.valafor a simple example). - Add your file to the sources list in
src/Makefile.am. - Add your class to the
CueMunger.mungersarray incue-munge.vala - Open a pull request!
Of course, Vala mightn't be your cup of tea. Since all the heavy lifting is done by libgue (GObject libcue), it should be a cinch to use it from whatever language you prefer with the GObject Introspection bindings.
Please keep in mind that libgue is still new (and written by someone who is still new, to lexical analysis in particular). It's likely chock full of bugs, and the API will probably change pretty drastically in the near future (several times). So, er... don't use it in production, 'kay? :)
Pretty straight-forward, just your usual autotools setup:
git clone https://github.com/Bob131/cue-munger
cd cue-munger
./autogen.sh
make && make install
You'll need GLib and uchardet dev packages, Ragel and whatever package
provides g-ir-compiler on your system (gobject-introspection-devel on
Fedora).