chdl/lib/exits.coffee

*chan downloader

exports.exit_with_usage = (code, error) ->
    console.error error
    console.error "usage: chdl [url]"
    process.exit code

exports.exit_with_unsupported = () ->
    console.error "invalid url or unsupported chan"
    supported_chans = require "./support"
        .supported_chans
    chanlist = []
    for chan of supported_chans
        chanlist.push chan
    console.error "supported chans: #{chanlist.join(', ')}"
    process.exit ecodes.URL_NOT_SUPPORTED

exports.exit = (code, message) ->
    console.error message if message
    process.exit code