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/*
* grunt-contrib-watch
* http://gruntjs.com/
*
* Copyright (c) 2013 "Cowboy" Ben Alman, contributors
* Licensed under the MIT license.
*/
'use strict';
var path = require('path');
var EE = require('events').EventEmitter;
var util = require('util');
module.exports = function(grunt) {
var livereload = require('./livereload')(grunt);
// Create a TaskRun on a target
function TaskRun(target, defaults) {
this.name = target.name || 0;
this.files = target.files || [];
this.tasks = target.tasks || [];
this.options = target.options;
this.startedAt = false;
this.spawned = null;
this.changedFiles = Object.create(null);
}
// Run it
TaskRun.prototype.run = function(done) {
var self = this;
// Dont run if already running
if (self.startedAt !== false) { return; }
self.startedAt = Date.now();
if (self.options.nospawn === true) {
grunt.task.run(self.tasks);
done();
} else {
self.spawned = grunt.util.spawn({
// Spawn with the grunt bin
grunt: true,
// Run from current working dir and inherit stdio from process
opts: {
cwd: self.options.cwd,
stdio: 'inherit',
},
// Run grunt this process uses, append the task to be run and any cli options
args: self.tasks.concat(self.options.cliArgs || [])
}, function(err, res, code) {
// Spawn is done
self.spawned = null;
done();
});
}
};
// When the task run has completed
TaskRun.prototype.complete = function() {
var time = Date.now() - this.startedAt;
this.startedAt = false;
if (this.spawned) {
this.spawned.kill('SIGINT');
this.spawned = null;
}
// Trigger livereload if set
if (this.livereload) {
this.livereload.trigger(Object.keys(this.changedFiles));
}
return time;
};
return TaskRun;
};