1 | 'use strict';
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2 |
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3 | const blurFunctionArguments = require('../../utils/blurFunctionArguments');
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4 | const report = require('../../utils/report');
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5 | const ruleMessages = require('../../utils/ruleMessages');
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6 | const styleSearch = require('style-search');
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7 | const validateOptions = require('../../utils/validateOptions');
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8 |
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9 | const ruleName = 'color-hex-case';
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10 |
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11 | const messages = ruleMessages(ruleName, {
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12 | expected: (actual, expected) => `Expected "${actual}" to be "${expected}"`,
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13 | });
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14 |
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15 | const rule = function(expectation, options, context) {
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16 | return (root, result) => {
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17 | const validOptions = validateOptions(result, ruleName, {
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18 | actual: expectation,
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19 | possible: ['lower', 'upper'],
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20 | });
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21 |
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22 | if (!validOptions) {
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23 | return;
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24 | }
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25 |
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26 | root.walkDecls((decl) => {
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27 | const declString = blurFunctionArguments(decl.toString(), 'url');
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28 | const fixPositions = [];
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29 |
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30 | styleSearch({ source: declString, target: '#' }, (match) => {
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31 | const hexMatch = /^#[0-9A-Za-z]+/.exec(declString.substr(match.startIndex));
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32 |
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33 | if (!hexMatch) {
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34 | return;
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35 | }
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36 |
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37 | const hexValue = hexMatch[0];
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38 | const hexValueLower = hexValue.toLowerCase();
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39 | const hexValueUpper = hexValue.toUpperCase();
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40 | const expectedHex = expectation === 'lower' ? hexValueLower : hexValueUpper;
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41 |
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42 | if (hexValue === expectedHex) {
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43 | return;
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44 | }
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45 |
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46 | if (context.fix) {
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47 | fixPositions.unshift({
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48 | expectedHex,
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49 | currentHex: hexValue,
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50 | startIndex: match.startIndex,
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51 | });
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52 |
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53 | return;
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54 | }
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55 |
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56 | report({
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57 | message: messages.expected(hexValue, expectedHex),
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58 | node: decl,
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59 | index: match.startIndex,
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60 | result,
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61 | ruleName,
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62 | });
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63 | });
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64 |
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65 | if (fixPositions.length) {
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66 | const declProp = decl.prop;
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67 | const declBetween = decl.raws.between;
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68 |
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69 | fixPositions.forEach(function(fixPosition) {
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70 |
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71 | decl.value = replaceHex(
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72 | decl.value,
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73 | fixPosition.currentHex,
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74 | fixPosition.expectedHex,
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75 | fixPosition.startIndex - declProp.length - declBetween.length - 1,
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76 | );
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77 | });
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78 | }
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79 | });
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80 | };
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81 | };
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82 |
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83 | function replaceHex(input, searchString, replaceString, startIndex) {
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84 | const offset = startIndex + 1;
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85 | const stringStart = input.slice(0, offset);
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86 | const stringEnd = input.slice(offset + searchString.length);
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87 |
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88 | return stringStart + replaceString + stringEnd;
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89 | }
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90 |
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91 | rule.ruleName = ruleName;
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92 | rule.messages = messages;
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93 | module.exports = rule;
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