1 | 'use strict';
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2 |
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3 | const atRuleParamIndex = require('../../utils/atRuleParamIndex');
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4 | const declarationValueIndex = require('../../utils/declarationValueIndex');
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5 | const getUnitFromValueNode = require('../../utils/getUnitFromValueNode');
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6 | const report = require('../../utils/report');
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7 | const ruleMessages = require('../../utils/ruleMessages');
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8 | const validateOptions = require('../../utils/validateOptions');
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9 | const valueParser = require('postcss-value-parser');
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10 |
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11 | const ruleName = 'unit-case';
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12 |
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13 | const messages = ruleMessages(ruleName, {
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14 | expected: (actual, expected) => `Expected "${actual}" to be "${expected}"`,
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15 | });
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16 |
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17 | function rule(expectation, options, context) {
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18 | return (root, result) => {
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19 | const validOptions = validateOptions(result, ruleName, {
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20 | actual: expectation,
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21 | possible: ['lower', 'upper'],
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22 | });
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23 |
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24 | if (!validOptions) {
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25 | return;
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26 | }
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27 |
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28 | function check(node, value, getIndex) {
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29 | const violations = [];
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30 |
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31 | function processValue(valueNode) {
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32 | const unit = getUnitFromValueNode(valueNode);
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33 |
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34 | if (!unit) {
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35 | return false;
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36 | }
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37 |
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38 | const expectedUnit = expectation === 'lower' ? unit.toLowerCase() : unit.toUpperCase();
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39 |
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40 | if (unit === expectedUnit) {
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41 | return false;
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42 | }
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43 |
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44 | violations.push({
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45 | index: getIndex(node) + valueNode.sourceIndex,
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46 | message: messages.expected(unit, expectedUnit),
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47 | });
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48 |
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49 | return true;
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50 | }
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51 |
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52 | const parsedValue = valueParser(value).walk((valueNode) => {
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53 |
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54 | let needFix = false;
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55 | const value = valueNode.value;
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56 |
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57 | if (valueNode.type === 'function' && value.toLowerCase() === 'url') {
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58 | return false;
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59 | }
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60 |
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61 | if (value.includes('*')) {
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62 | value.split('*').some((val) => {
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63 | return processValue({
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64 | ...valueNode,
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65 | sourceIndex: value.indexOf(val) + val.length + 1,
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66 | value: val,
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67 | });
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68 | });
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69 | }
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70 |
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71 | needFix = processValue(valueNode);
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72 |
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73 | if (needFix && context.fix) {
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74 | valueNode.value = expectation === 'lower' ? value.toLowerCase() : value.toUpperCase();
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75 | }
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76 | });
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77 |
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78 | if (violations.length) {
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79 | if (context.fix) {
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80 | if (node.name === 'media') {
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81 | node.params = parsedValue.toString();
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82 | } else {
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83 | node.value = parsedValue.toString();
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84 | }
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85 | } else {
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86 | violations.forEach((err) => {
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87 | report({
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88 | index: err.index,
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89 | message: err.message,
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90 | node,
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91 | result,
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92 | ruleName,
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93 | });
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94 | });
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95 | }
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96 | }
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97 | }
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98 |
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99 | root.walkAtRules((atRule) => {
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100 | if (!/^media$/i.test(atRule.name) && !atRule.variable) {
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101 | return;
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102 | }
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103 |
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104 | check(atRule, atRule.params, atRuleParamIndex);
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105 | });
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106 | root.walkDecls((decl) => check(decl, decl.value, declarationValueIndex));
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107 | };
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108 | }
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109 |
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110 | rule.ruleName = ruleName;
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111 | rule.messages = messages;
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112 | module.exports = rule;
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