71 lines
2.7 KiB
CoffeeScript
71 lines
2.7 KiB
CoffeeScript
# `cake` is a simplified version of [Make](http://www.gnu.org/software/make/)
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# ([Rake](http://rake.rubyforge.org/), [Jake](http://github.com/280north/jake))
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# for CoffeeScript. You define tasks with names and descriptions in a Cakefile,
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# and can call them from the command line, or invoke them from other tasks.
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#
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# Running `cake` with no arguments will print out a list of all the tasks in the
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# current directory's Cakefile.
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# External dependencies.
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fs: require 'fs'
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path: require 'path'
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helpers: require('./helpers').helpers
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optparse: require './optparse'
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CoffeeScript: require './coffee-script'
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# Keep track of the list of defined tasks, the accepted options, and so on.
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tasks: {}
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options: {}
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switches: []
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oparse: null
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# Mixin the top-level Cake functions for Cakefiles to use directly.
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helpers.extend global, {
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# Define a Cake task with a short name, an optional sentence description,
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# and the function to run as the action itself.
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task: (name, description, action) ->
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[action, description]: [description, action] unless action
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tasks[name]: {name: name, description: description, action: action}
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# Define an option that the Cakefile accepts. The parsed options hash,
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# containing all of the command-line options passed, will be made available
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# as the first argument to the action.
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option: (letter, flag, description) ->
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switches.push [letter, flag, description]
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# Invoke another task in the current Cakefile.
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invoke: (name) ->
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no_such_task name unless tasks[name]
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tasks[name].action options
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}
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# Run `cake`. Executes all of the tasks you pass, in order. Note that Node's
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# asynchrony may cause tasks to execute in a different order than you'd expect.
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# If no tasks are passed, print the help screen.
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exports.run: ->
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path.exists 'Cakefile', (exists) ->
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throw new Error("Cakefile not found in ${process.cwd()}") unless exists
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args: process.argv[2...process.argv.length]
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CoffeeScript.run fs.readFileSync('Cakefile').toString(), {source: 'Cakefile'}
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oparse: new optparse.OptionParser switches
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return print_tasks() unless args.length
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options: oparse.parse(args)
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invoke arg for arg in options.arguments
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# Display the list of Cake tasks in a format similar to `rake -T`
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print_tasks: ->
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puts ''
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for name, task of tasks
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spaces: 20 - name.length
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spaces: if spaces > 0 then (' ' for i in [0..spaces]).join('') else ''
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desc: if task.description then "# $task.description" else ''
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puts "cake $name$spaces $desc"
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puts oparse.help() if switches.length
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# Print an error and exit when attempting to all an undefined task.
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no_such_task: (task) ->
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puts "No such task: \"$task\""
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process.exit 1
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