forked from enviPath/enviPy
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Tim Lorsbach
265
static/js/ketcher2/node_modules/istanbul/lib/command/instrument.js
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vendored
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265
static/js/ketcher2/node_modules/istanbul/lib/command/instrument.js
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vendored
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/*
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Copyright (c) 2012, Yahoo! Inc. All rights reserved.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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var path = require('path'),
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mkdirp = require('mkdirp'),
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once = require('once'),
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async = require('async'),
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fs = require('fs'),
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filesFor = require('../util/file-matcher').filesFor,
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nopt = require('nopt'),
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Instrumenter = require('../instrumenter'),
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inputError = require('../util/input-error'),
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formatOption = require('../util/help-formatter').formatOption,
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util = require('util'),
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Command = require('./index'),
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Collector = require('../collector'),
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configuration = require('../config'),
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verbose;
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/*
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* Chunk file size to use when reading non JavaScript files in memory
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* and copying them over when using complete-copy flag.
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*/
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var READ_FILE_CHUNK_SIZE = 64 * 1024;
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function BaselineCollector(instrumenter) {
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this.instrumenter = instrumenter;
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this.collector = new Collector();
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this.instrument = instrumenter.instrument.bind(this.instrumenter);
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var origInstrumentSync = instrumenter.instrumentSync;
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this.instrumentSync = function () {
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var args = Array.prototype.slice.call(arguments),
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ret = origInstrumentSync.apply(this.instrumenter, args),
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baseline = this.instrumenter.lastFileCoverage(),
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coverage = {};
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coverage[baseline.path] = baseline;
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this.collector.add(coverage);
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return ret;
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};
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//monkey patch the instrumenter to call our version instead
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instrumenter.instrumentSync = this.instrumentSync.bind(this);
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}
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BaselineCollector.prototype = {
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getCoverage: function () {
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return this.collector.getFinalCoverage();
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}
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};
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function processFiles(instrumenter, inputDir, outputDir, relativeNames, extensions) {
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var processor = function (name, callback) {
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var inputFile = path.resolve(inputDir, name),
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outputFile = path.resolve(outputDir, name),
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inputFileExtenstion = path.extname(inputFile),
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isJavaScriptFile = extensions.indexOf(inputFileExtenstion) > -1,
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oDir = path.dirname(outputFile),
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readStream, writeStream;
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callback = once(callback);
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mkdirp.sync(oDir);
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if (fs.statSync(inputFile).isDirectory()) {
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return callback(null, name);
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}
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if (isJavaScriptFile) {
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fs.readFile(inputFile, 'utf8', function (err, data) {
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if (err) { return callback(err, name); }
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instrumenter.instrument(data, inputFile, function (iErr, instrumented) {
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if (iErr) { return callback(iErr, name); }
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fs.writeFile(outputFile, instrumented, 'utf8', function (err) {
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return callback(err, name);
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});
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});
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});
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}
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else {
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// non JavaScript file, copy it as is
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readStream = fs.createReadStream(inputFile, {'bufferSize': READ_FILE_CHUNK_SIZE});
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writeStream = fs.createWriteStream(outputFile);
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readStream.on('error', callback);
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writeStream.on('error', callback);
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readStream.pipe(writeStream);
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readStream.on('end', function() {
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callback(null, name);
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});
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}
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},
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q = async.queue(processor, 10),
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errors = [],
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count = 0,
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startTime = new Date().getTime();
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q.push(relativeNames, function (err, name) {
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var inputFile, outputFile;
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if (err) {
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errors.push({ file: name, error: err.message || err.toString() });
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inputFile = path.resolve(inputDir, name);
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outputFile = path.resolve(outputDir, name);
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fs.writeFileSync(outputFile, fs.readFileSync(inputFile));
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}
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if (verbose) {
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console.log('Processed: ' + name);
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} else {
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if (count % 100 === 0) { process.stdout.write('.'); }
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}
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count += 1;
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});
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q.drain = function () {
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var endTime = new Date().getTime();
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console.log('\nProcessed [' + count + '] files in ' + Math.floor((endTime - startTime) / 1000) + ' secs');
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if (errors.length > 0) {
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console.log('The following ' + errors.length + ' file(s) had errors and were copied as-is');
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console.log(errors);
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}
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};
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}
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function InstrumentCommand() {
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Command.call(this);
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}
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InstrumentCommand.TYPE = 'instrument';
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util.inherits(InstrumentCommand, Command);
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Command.mix(InstrumentCommand, {
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synopsis: function synopsis() {
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return "instruments a file or a directory tree and writes the instrumented code to the desired output location";
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},
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usage: function () {
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console.error('\nUsage: ' + this.toolName() + ' ' + this.type() + ' <options> <file-or-directory>\n\nOptions are:\n\n' +
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[
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formatOption('--config <path-to-config>', 'the configuration file to use, defaults to .istanbul.yml'),
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formatOption('--output <file-or-dir>', 'The output file or directory. This is required when the input is a directory, ' +
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'defaults to standard output when input is a file'),
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formatOption('-x <exclude-pattern> [-x <exclude-pattern>]', 'one or more glob patterns (e.g. "**/vendor/**" to ignore all files ' +
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'under a vendor directory). Also see the --default-excludes option'),
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formatOption('--variable <global-coverage-variable-name>', 'change the variable name of the global coverage variable from the ' +
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'default value of `__coverage__` to something else'),
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formatOption('--embed-source', 'embed source code into the coverage object, defaults to false'),
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formatOption('--[no-]compact', 'produce [non]compact output, defaults to compact'),
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formatOption('--[no-]preserve-comments', 'remove / preserve comments in the output, defaults to false'),
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formatOption('--[no-]complete-copy', 'also copy non-javascript files to the ouput directory as is, defaults to false'),
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formatOption('--save-baseline', 'produce a baseline coverage.json file out of all files instrumented'),
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formatOption('--baseline-file <file>', 'filename of baseline file, defaults to coverage/coverage-baseline.json'),
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formatOption('--es-modules', 'source code uses es import/export module syntax')
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].join('\n\n') + '\n');
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console.error('\n');
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},
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run: function (args, callback) {
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var template = {
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config: path,
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output: path,
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x: [Array, String],
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variable: String,
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compact: Boolean,
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'complete-copy': Boolean,
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verbose: Boolean,
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'save-baseline': Boolean,
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'baseline-file': path,
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'embed-source': Boolean,
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'preserve-comments': Boolean,
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'es-modules': Boolean
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},
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opts = nopt(template, { v : '--verbose' }, args, 0),
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overrides = {
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verbose: opts.verbose,
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instrumentation: {
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variable: opts.variable,
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compact: opts.compact,
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'embed-source': opts['embed-source'],
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'preserve-comments': opts['preserve-comments'],
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excludes: opts.x,
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'complete-copy': opts['complete-copy'],
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'save-baseline': opts['save-baseline'],
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'baseline-file': opts['baseline-file'],
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'es-modules': opts['es-modules']
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}
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},
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config = configuration.loadFile(opts.config, overrides),
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iOpts = config.instrumentation,
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cmdArgs = opts.argv.remain,
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file,
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stats,
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stream,
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includes,
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instrumenter,
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needBaseline = iOpts.saveBaseline(),
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baselineFile = path.resolve(iOpts.baselineFile()),
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output = opts.output;
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verbose = config.verbose;
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if (cmdArgs.length !== 1) {
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return callback(inputError.create('Need exactly one filename/ dirname argument for the instrument command!'));
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}
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if (iOpts.completeCopy()) {
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includes = ['**/*'];
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}
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else {
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includes = iOpts.extensions().map(function(ext) {
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return '**/*' + ext;
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});
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}
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instrumenter = new Instrumenter({
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coverageVariable: iOpts.variable(),
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embedSource: iOpts.embedSource(),
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noCompact: !iOpts.compact(),
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preserveComments: iOpts.preserveComments(),
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esModules: iOpts.esModules()
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});
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if (needBaseline) {
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mkdirp.sync(path.dirname(baselineFile));
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instrumenter = new BaselineCollector(instrumenter);
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process.on('exit', function () {
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console.log('Saving baseline coverage at: ' + baselineFile);
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fs.writeFileSync(baselineFile, JSON.stringify(instrumenter.getCoverage()), 'utf8');
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});
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}
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file = path.resolve(cmdArgs[0]);
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stats = fs.statSync(file);
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if (stats.isDirectory()) {
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if (!output) { return callback(inputError.create('Need an output directory [-o <dir>] when input is a directory!')); }
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if (output === file) { return callback(inputError.create('Cannot instrument into the same directory/ file as input!')); }
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mkdirp.sync(output);
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filesFor({
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root: file,
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includes: includes,
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excludes: opts.x || iOpts.excludes(false), // backwards-compat, *sigh*
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relative: true
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}, function (err, files) {
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if (err) { return callback(err); }
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processFiles(instrumenter, file, output, files, iOpts.extensions());
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});
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} else {
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if (output) {
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stream = fs.createWriteStream(output);
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} else {
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stream = process.stdout;
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}
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stream.write(instrumenter.instrumentSync(fs.readFileSync(file, 'utf8'), file));
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if (stream !== process.stdout) {
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stream.end();
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}
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}
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}
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});
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module.exports = InstrumentCommand;
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