1 | 'use strict';
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2 | var path = require('path');
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3 | var os = require('os');
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4 | var dargs = require('dargs');
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5 | var async = require('async');
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6 | var chalk = require('chalk');
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7 | var spawn = require('cross-spawn');
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8 | var which = require('which');
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9 | var checkFilesSyntax = require('./lib/check');
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10 | var concurrencyCount = (os.cpus().length || 1) * 4;
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11 |
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12 | module.exports = function (grunt) {
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13 | var checkBinary = function (cmd, errMsg) {
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14 | try {
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15 | which.sync(cmd);
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16 | } catch (err) {
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17 | return grunt.warn(
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18 | '\n' + errMsg + '\n' +
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19 | 'More info: https://github.com/gruntjs/grunt-contrib-sass\n'
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20 | );
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21 | }
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22 | };
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23 |
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24 | grunt.registerMultiTask('sass', 'Compile Sass to CSS', function () {
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25 | var cb = this.async();
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26 | var options = this.options();
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27 |
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28 | if (options.bundleExec) {
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29 | checkBinary('bundle',
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30 | 'bundleExec options set but no Bundler executable found in your PATH.'
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31 | );
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32 | } else {
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33 | checkBinary('sass',
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34 | 'You need to have Ruby and Sass installed and in your PATH for this task to work.'
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35 | );
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36 | }
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37 |
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38 | if (options.check) {
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39 | options.concurrencyCount = concurrencyCount;
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40 | checkFilesSyntax(this.filesSrc, options, cb);
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41 | return;
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42 | }
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43 |
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44 | var passedArgs = dargs(options, {
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45 | excludes: ['bundleExec'],
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46 | ignoreFalse: true
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47 | });
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48 |
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49 | async.eachLimit(this.files, concurrencyCount, function (file, next) {
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50 | var src = file.src[0];
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51 |
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52 | if (path.basename(src)[0] === '_') {
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53 | return next();
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54 | }
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55 |
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56 | var args = [
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57 | src,
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58 | file.dest
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59 | ].concat(passedArgs);
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60 |
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61 | if (options.update) {
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62 |
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63 |
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64 | if (!grunt.file.exists(file.dest)) {
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65 |
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66 | args.splice(args.indexOf('--update'), 1);
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67 | } else {
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68 |
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69 |
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70 | args.push(args.shift() + ':' + args.shift());
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71 | }
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72 | }
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73 |
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74 | var bin = 'sass';
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75 |
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76 | if (options.bundleExec) {
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77 | bin = 'bundle';
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78 | args.unshift('exec', 'sass');
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79 | }
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80 |
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81 |
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82 | if (path.extname(src) === '.css') {
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83 | args.push('--scss');
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84 | }
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85 |
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86 |
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87 | if (!grunt.file.exists(file.dest)) {
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88 | grunt.file.write(file.dest, '');
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89 | }
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90 |
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91 | grunt.verbose.writeln('Command: ' + bin + ' ' + args.join(' '));
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92 |
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93 | var cp = spawn(bin, args, {stdio: 'inherit'});
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94 |
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95 | cp.on('error', grunt.warn);
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96 |
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97 | cp.on('close', function (code) {
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98 | if (code > 0) {
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99 | grunt.warn('Exited with error code ' + code);
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100 | next();
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101 | return;
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102 | }
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103 |
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104 | grunt.verbose.writeln('File ' + chalk.cyan(file.dest) + ' created');
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105 | next();
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106 | });
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107 | }, cb);
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108 | });
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109 | };
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