grunt-nestedtasksrunner/runner.js

Nested tasks generator for Grunt

var _ = require('lodash');

module.exports = function(grunt) {
    return function runner() {
        var dataKind = grunt.util.kindOf(this.data);

        if(this.args.length) {
            var subtask = this.args[0],
                subtaskConfig = this.data[subtask];

            if(!subtaskConfig) {
                grunt.fail.warn('Subtask "' + subtask + '" not found.');
            } else {
                return runner.call({
                    target: this.target + ':' + subtask,
                    data: subtaskConfig,
                    name: this.name,
                    args: this.args.slice(1),
                    nameArgs: this.nameArgs
                }, grunt);
            }
        } else if((dataKind === 'array') || (dataKind === 'string')) {
            return grunt.task.run(this.data);
        } else {
            var options = _.extend({
                    concurrent: false,
                    logConcurrentOutput: false
                }, this.data.options),
                concurrentConfig = { };

            if(options.concurrent) {
                concurrentConfig = {
                    tasks: [ ],
                    options: {
                        logConcurrentOutput: options.logConcurrentOutput
                    }
                };
            }

            var res = _(this.data).every(function(config, name) {
                if(name === 'options') {
                    return true;
                }

                var taskName = [ this.name, this.target, name ].join(':');

                if(options.concurrent) {
                    return concurrentConfig.tasks.push(taskName);
                } else {
                    return grunt.task.run(taskName);
                }
            }, this);

            if(options.concurrent) {
                var newConfig = { },
                    configKey = this.nameArgs.replace(/\:/g, '-');
                newConfig[configKey] = concurrentConfig;

                grunt.config.set('concurrent', _.extend({ }, grunt.config.get('concurrent'), newConfig));

                return grunt.task.run('concurrent:' + configKey);
            } else {
                return res;
            }
        }
    };
};