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jashkenas--coffeescript/lib/cake.js

106 lines
3.8 KiB
JavaScript
Executable file

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