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-/**
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- * Adds CSS related metrics using analyze-css NPM module
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- *
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- * @see https://github.com/macbre/analyze-css
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- *
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- * Run phantomas with --analyze-css option to use this module
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- *
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- * setMetric('cssBase64Length') @desc total length of base64-encoded data in CSS source (will warn about base64-encoded data bigger than 4 kB) @optional @offenders
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- * setMetric('cssRedundantBodySelectors') @desc number of redundant body selectors (e.g. body .foo, section body h2, but not body > h1) @optional @offenders
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- * setMetric('cssComments') @desc number of comments in CSS source @optional @offenders
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- * setMetric('cssCommentsLength') @desc length of comments content in CSS source @optional
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- * setMetric('cssComplexSelectors') @desc number of complex selectors (consisting of more than three expressions, e.g. header ul li .foo) @optional @offenders
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- * setMetric('cssDuplicatedSelectors') @desc number of CSS selectors defined more than once in CSS source @optional @offenders
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- * setMetric('cssEmptyRules') @desc number of rules with no properties (e.g. .foo { }) @optional @offenders
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- * setMetric('cssExpressions') @desc number of rules with CSS expressions (e.g. expression( document.body.clientWidth > 600 ? "600px" : "auto" )) @optional @offenders
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- * setMetric('cssOldIEFixes') @desc number of fixes for old versions of Internet Explorer (e.g. * html .foo {} and .foo { *zoom: 1 }) @optional @offenders
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- * setMetric('cssImportants') @desc number of properties with value forced by !important @optional @offenders
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- * setMetric('cssMediaQueries') @desc number of media queries (e.g. @media screen and (min-width: 1370px)) @optional @offenders
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- * setMetric('cssOldPropertyPrefixes') @desc number of properties with no longer needed vendor prefix, powered by data provided by autoprefixer (e.g. --moz-border-radius) @optional @offenders
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- * setMetric('cssQualifiedSelectors') @desc number of qualified selectors (e.g. header#nav, .foo#bar, h1.title) @optional @offenders
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- * setMetric('cssSpecificityIdAvg') @desc average specificity for ID @optional
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- * setMetric('cssSpecificityIdTotal') @desc total specificity for ID @optional
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- * setMetric('cssSpecificityClassAvg') @desc average specificity for class, pseudo-class or attribute @optional
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- * setMetric('cssSpecificityClassTotal') @desc total specificity for class, pseudo-class or attribute @optional
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- * setMetric('cssSpecificityTagAvg') @desc average specificity for element @optional
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- * setMetric('cssSpecificityTagTotal') @desc total specificity for element @optional
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- * setMetric('cssSelectorsByAttribute') @desc number of selectors by attribute (e.g. .foo[value=bar]) @optional
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- * setMetric('cssSelectorsByClass') @desc number of selectors by class @optional
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- * setMetric('cssSelectorsById') @desc number of selectors by ID @optional
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- * setMetric('cssSelectorsByPseudo') @desc number of pseudo-selectors (e,g. :hover) @optional
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- * setMetric('cssSelectorsByTag') @desc number of selectors by tag name @optional
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- * setMetric('cssUniversalSelectors') @desc number of selectors trying to match every element (e.g. .foo > *) @optional @offenders
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- * setMetric('cssLength') @desc length of CSS source (in bytes) @optional
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- * setMetric('cssRules') @desc number of rules (e.g. .foo, .bar { color: red } is counted as one rule) @optional
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- * setMetric('cssSelectors') @desc number of selectors (e.g. .foo, .bar { color: red } is counted as two selectors - .foo and .bar) @optional
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- * setMetric('cssDeclarations') @desc number of declarations (e.g. .foo, .bar { color: red } is counted as one declaration - color: red) @optional
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- * setMetric('cssParsingErrors') @desc number of CSS files (or embeded CSS) that failed to be parse by analyse-css @optional
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- */
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-
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-exports.version = '0.3.a';
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-
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-exports.module = function(phantomas) {
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- 'use strict';
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-
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- if (!phantomas.getParam('analyze-css')) {
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- phantomas.log('To enable CSS in-depth metrics please run phantomas with --analyze-css option');
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- return;
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- }
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-
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- function ucfirst(str) {
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- // http://kevin.vanzonneveld.net
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- // + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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- // + bugfixed by: Onno Marsman
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- // + improved by: Brett Zamir (http://brett-zamir.me)
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- // * example 1: ucfirst('kevin van zonneveld');
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- // * returns 1: 'Kevin van zonneveld'
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- str += '';
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- var f = str.charAt(0).toUpperCase();
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- return f + str.substr(1);
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- }
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-
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- var isWindows = (require('system').os.name === 'windows'),
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- binary = isWindows ? 'analyze-css.cmd' : 'analyze-css';
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-
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- phantomas.on('recv', function(entry, res) {
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- if (entry.isCSS) {
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- phantomas.log('CSS: analyzing <%s>...', entry.url);
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-
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- // run analyze-css "binary" installed by npm
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- phantomas.runScript('node_modules/.bin/' + binary, ['--url', entry.url, '--json'], function(err, results) {
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- if (err !== null) {
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- phantomas.log('analyzeCss: sub-process failed!');
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-
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- var offender = entry.url;
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- if (err.indexOf('near line') > 0) {
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- offender += ' (' + err + ')';
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- }
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-
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- phantomas.incrMetric('cssParsingErrors');
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- phantomas.addOffender('cssParsingErrors', offender);
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-
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- return;
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- }
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-
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- phantomas.log('analyzeCss: using ' + results.generator);
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-
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- var metrics = results.metrics || {},
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- offenders = results.offenders || {};
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-
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- Object.keys(metrics).forEach(function(metric) {
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- var metricPrefixed = 'css' + ucfirst(metric);
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-
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- // increase metrics
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- phantomas.incrMetric(metricPrefixed, metrics[metric]);
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-
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- // and add offenders
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- if (typeof offenders[metric] !== 'undefined') {
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- offenders[metric].forEach(function(msg) {
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- phantomas.addOffender(metricPrefixed, msg);
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- });
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- }
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- });
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- });
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- }
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- });
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-};
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