1 |
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2 |
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3 | 'use strict';
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4 |
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5 | const _ = require('lodash');
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6 | const declarationValueIndex = require('../../utils/declarationValueIndex');
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7 | const findFontFamily = require('../../utils/findFontFamily');
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8 | const keywordSets = require('../../reference/keywordSets');
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9 | const optionsMatches = require('../../utils/optionsMatches');
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10 | const report = require('../../utils/report');
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11 | const ruleMessages = require('../../utils/ruleMessages');
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12 | const validateOptions = require('../../utils/validateOptions');
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13 |
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14 | const ruleName = 'font-family-no-duplicate-names';
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15 |
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16 | const messages = ruleMessages(ruleName, {
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17 | rejected: (name) => `Unexpected duplicate name ${name}`,
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18 | });
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19 |
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20 | const isFamilyNameKeyword = (node) =>
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21 | !node.quote && keywordSets.fontFamilyKeywords.has(node.value.toLowerCase());
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22 |
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23 | function rule(actual, options) {
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24 | return (root, result) => {
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25 | const validOptions = validateOptions(
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26 | result,
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27 | ruleName,
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28 | { actual },
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29 | {
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30 | actual: options,
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31 | possible: {
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32 | ignoreFontFamilyNames: [_.isString, _.isRegExp],
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33 | },
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34 | optional: true,
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35 | },
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36 | );
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37 |
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38 | if (!validOptions) {
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39 | return;
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40 | }
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41 |
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42 | root.walkDecls(/^font(-family)?$/i, (decl) => {
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43 | const keywords = new Set();
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44 | const familyNames = new Set();
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45 |
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46 | const fontFamilies = findFontFamily(decl.value);
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47 |
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48 | if (fontFamilies.length === 0) {
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49 | return;
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50 | }
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51 |
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52 | fontFamilies.forEach((fontFamilyNode) => {
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53 | const family = fontFamilyNode.value.trim();
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54 |
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55 | if (optionsMatches(options, 'ignoreFontFamilyNames', fontFamilyNode.value.trim())) {
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56 | return;
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57 | }
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58 |
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59 | if (isFamilyNameKeyword(fontFamilyNode)) {
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60 | if (keywords.has(family.toLowerCase())) {
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61 | complain(
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62 | messages.rejected(family),
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63 | declarationValueIndex(decl) + fontFamilyNode.sourceIndex,
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64 | decl,
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65 | );
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66 |
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67 | return;
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68 | }
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69 |
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70 | keywords.add(family);
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71 |
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72 | return;
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73 | }
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74 |
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75 | if (familyNames.has(family)) {
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76 | complain(
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77 | messages.rejected(family),
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78 | declarationValueIndex(decl) + fontFamilyNode.sourceIndex,
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79 | decl,
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80 | );
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81 |
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82 | return;
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83 | }
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84 |
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85 | familyNames.add(family);
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86 | });
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87 | });
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88 |
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89 | function complain(message, index, decl) {
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90 | report({
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91 | result,
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92 | ruleName,
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93 | message,
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94 | node: decl,
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95 | index,
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96 | });
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97 | }
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98 | };
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99 | }
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100 |
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101 | rule.ruleName = ruleName;
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102 | rule.messages = messages;
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103 | module.exports = rule;
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