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9 | var istanbul = require('istanbul')
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10 | var minimatch = require('minimatch')
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11 | var path = require('path')
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12 | var SourceMapConsumer = require('source-map').SourceMapConsumer
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13 | var SourceMapGenerator = require('source-map').SourceMapGenerator
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14 | var globalSourceCache = require('./source-cache')
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15 | var extend = require('util')._extend
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16 | var coverageMap = require('./coverage-map')
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17 |
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18 |
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19 |
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20 |
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21 | var coverageObjRegex = /\{.*"path".*"fnMap".*"statementMap".*"branchMap".*\}/g
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22 |
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23 |
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24 | function createCoveragePreprocessor (logger, helper, basePath, reporters, coverageReporter) {
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25 | var _ = helper._
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26 | var log = logger.create('preprocessor.coverage')
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27 |
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28 |
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29 |
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30 |
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31 | var instrumenterOverrides = {}
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32 | var instrumenters = {istanbul: istanbul}
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33 | var includeAllSources = false
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34 | var useJSExtensionForCoffeeScript = false
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35 |
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36 | if (coverageReporter) {
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37 | instrumenterOverrides = coverageReporter.instrumenter
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38 | instrumenters = extend({istanbul: istanbul}, coverageReporter.instrumenters)
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39 | includeAllSources = coverageReporter.includeAllSources === true
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40 | useJSExtensionForCoffeeScript = coverageReporter.useJSExtensionForCoffeeScript === true
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41 | }
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42 |
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43 | var sourceCache = globalSourceCache.get(basePath)
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44 |
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45 | var instrumentersOptions = _.reduce(instrumenters, function getInstumenterOptions (memo, instrument, name) {
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46 | memo[name] = {}
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47 |
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48 | if (coverageReporter && coverageReporter.instrumenterOptions) {
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49 | memo[name] = coverageReporter.instrumenterOptions[name]
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50 | }
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51 |
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52 | return memo
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53 | }, {})
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54 |
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55 |
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56 | if (!_.includes(reporters, 'coverage')) {
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57 | return function (content, _, done) {
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58 | done(content)
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59 | }
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60 | }
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61 |
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62 |
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63 | function checkInstrumenters () {
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64 | return _.reduce(instrumenterOverrides, function (acc, literal, pattern) {
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65 | if (!_.includes(_.keys(instrumenters), String(literal))) {
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66 | log.error('Unknown instrumenter: %s', literal)
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67 | return false
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68 | }
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69 | return acc
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70 | }, true)
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71 | }
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72 |
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73 | if (!checkInstrumenters()) {
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74 | return function (content, _, done) {
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75 | return done(1)
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76 | }
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77 | }
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78 |
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79 | return function (content, file, done) {
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80 | log.debug('Processing "%s".', file.originalPath)
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81 |
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82 | var jsPath = path.resolve(file.originalPath)
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83 |
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84 | var instrumenterLiteral = 'istanbul'
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85 |
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86 | _.forEach(instrumenterOverrides, function (literal, pattern) {
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87 | if (minimatch(file.originalPath, pattern, {dot: true})) {
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88 | instrumenterLiteral = String(literal)
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89 | }
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90 | })
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91 |
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92 | var InstrumenterConstructor = instrumenters[instrumenterLiteral].Instrumenter
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93 | var constructOptions = instrumentersOptions[instrumenterLiteral] || {}
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94 | var codeGenerationOptions = null
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95 |
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96 | if (file.sourceMap) {
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97 | log.debug('Enabling source map generation for "%s".', file.originalPath)
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98 | codeGenerationOptions = extend({
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99 | format: {
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100 | compact: !constructOptions.noCompact
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101 | },
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102 | sourceMap: file.sourceMap.file,
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103 | sourceMapWithCode: true,
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104 | file: file.path
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105 | }, constructOptions.codeGenerationOptions || {})
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106 | }
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107 |
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108 | var options = extend({}, constructOptions)
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109 | options = extend(options, {codeGenerationOptions: codeGenerationOptions})
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110 |
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111 | var instrumenter = new InstrumenterConstructor(options)
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112 | instrumenter.instrument(content, jsPath, function (err, instrumentedCode) {
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113 | if (err) {
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114 | log.error('%s\n at %s', err.message, file.originalPath)
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115 | done(err.message)
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116 | } else {
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117 | if (file.sourceMap && instrumenter.lastSourceMap()) {
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118 | log.debug('Adding source map to instrumented file for "%s".', file.originalPath)
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119 | var generator = SourceMapGenerator.fromSourceMap(new SourceMapConsumer(instrumenter.lastSourceMap().toString()))
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120 | generator.applySourceMap(new SourceMapConsumer(file.sourceMap))
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121 | file.sourceMap = JSON.parse(generator.toString())
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122 | instrumentedCode += '\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,'
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123 | instrumentedCode += new Buffer(JSON.stringify(file.sourceMap)).toString('base64') + '\n'
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124 | }
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125 |
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126 |
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127 | sourceCache[jsPath] = content
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128 |
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129 | if (includeAllSources) {
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130 |
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131 | coverageObjRegex.lastIndex = 0
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132 |
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133 | var coverageObjMatch = coverageObjRegex.exec(instrumentedCode)
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134 |
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135 | if (coverageObjMatch !== null) {
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136 | var coverageObj = JSON.parse(coverageObjMatch[0])
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137 |
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138 | coverageMap.add(coverageObj)
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139 | }
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140 | }
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141 |
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142 |
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143 | if (useJSExtensionForCoffeeScript && instrumenterLiteral === 'ibrik') {
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144 | file.path = file.path.replace(/\.coffee$/, '.js')
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145 | }
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146 |
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147 | done(instrumentedCode)
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148 | }
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149 | })
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150 | }
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151 | }
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152 |
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153 | createCoveragePreprocessor.$inject = [
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154 | 'logger',
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155 | 'helper',
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156 | 'config.basePath',
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157 | 'config.reporters',
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158 | 'config.coverageReporter'
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159 | ]
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160 |
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161 | module.exports = createCoveragePreprocessor
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