1 | var detective = require('detective'),
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2 | detectiveAmd = require('detective-amd'),
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3 | gmt = require('module-definition'),
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4 | required = require('required'),
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5 | fs = require('fs'),
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6 | path = require('path'),
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7 | q = require('q');
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8 |
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9 |
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10 | module.exports = function (directory, opt, cb) {
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11 |
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12 | if (typeof opt === 'function') {
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13 | cb = opt;
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14 | opt = {};
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15 | } else {
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16 | opt = opt || {};
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17 | }
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18 |
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19 | var jsFiles = getAllJSFiles(directory, opt);
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20 |
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21 |
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22 | getIndependentJSFiles(jsFiles)
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23 | .done(function (jsFiles) {
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24 | cb && cb(jsFiles);
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25 | });
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26 | };
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27 |
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28 | function getIndependentJSFiles(jsFiles) {
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29 |
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30 |
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31 | return q.all(jsFiles.map(getDependencies))
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32 | .then(function (results) {
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33 | var filesUsed = {};
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34 |
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35 | results.forEach(function (deps, idx) {
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36 |
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37 | if (! deps || ! deps.length) {
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38 | filesUsed[jsFiles[idx]] = true;
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39 |
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40 | } else {
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41 | deps.forEach(function (dep) {
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42 | if (dep.core) return;
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43 |
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44 | filesUsed[dep.filename] = true;
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45 | });
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46 | }
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47 | });
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48 |
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49 |
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50 | return jsFiles.filter(function (jsFile) {
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51 | return typeof filesUsed[jsFile] === 'undefined';
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52 | });
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53 | });
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54 | }
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55 |
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56 |
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57 | function getDependencies(jsFile) {
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58 | return getModuleType(jsFile)
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59 |
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60 | .then(function (moduleType) {
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61 | return {
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62 | detective: getAppropriateDetective(moduleType),
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63 | ignoreMissing: true
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64 | };
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65 | })
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66 |
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67 | .then(function (options) {
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68 | var deferred = q.defer();
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69 |
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70 | required(jsFile, options, function (err, deps) {
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71 | if (err) console.log(jsFile, err);
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72 |
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73 | deferred.resolve(deps || []);
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74 | });
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75 |
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76 | return deferred.promise;
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77 | });
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78 | }
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79 |
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80 |
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81 |
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82 |
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83 | function getAppropriateDetective(moduleType) {
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84 | switch (moduleType) {
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85 | case 'commonjs':
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86 | return detective;
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87 | case 'amd':
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88 | return detectiveAmd;
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89 | }
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90 |
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91 | return null;
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92 | }
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93 |
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94 |
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95 | function getModuleType(jsFile) {
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96 | var deferred = q.defer();
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97 |
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98 | gmt(jsFile, function (moduleType) {
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99 | deferred.resolve(moduleType);
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100 | });
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101 |
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102 | return deferred.promise;
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103 | }
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104 |
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105 |
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106 |
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107 | function getAllJSFiles(directory, opt) {
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108 | var jsFilePaths = [];
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109 |
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110 | fs.readdirSync(directory).forEach(function (filename) {
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111 | var fullName = directory + '/' + filename,
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112 | isDirectory = fs.lstatSync(fullName).isDirectory(),
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113 | ext = path.extname(filename);
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114 |
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115 | if (isDirectory) {
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116 | if (opt.ignore && ! shouldBeIgnored(filename, opt.ignore) ||
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117 | (! opt.ignore || ! opt.ignore.length)) {
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118 |
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119 | jsFilePaths = jsFilePaths.concat(getAllJSFiles(fullName, opt));
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120 | }
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121 | } else if (ext === '.js') {
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122 | jsFilePaths.push(fullName);
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123 | }
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124 | });
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125 |
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126 | return jsFilePaths;
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127 | }
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128 |
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129 |
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130 |
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131 | function shouldBeIgnored(filename, exclusions) {
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132 | var result = false;
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133 |
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134 | exclusions = exclusions || [];
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135 |
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136 | for (var i = 0, l = exclusions.length; i < l; i++) {
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137 |
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138 |
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139 | if (filename.indexOf(exclusions[i]) !== -1) {
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140 | result = true;
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141 | break;
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142 | }
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143 | }
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144 |
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145 | return result;
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146 | } |
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