| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| |
| var _postcss = require('postcss'); |
| |
| var _postcss2 = _interopRequireDefault(_postcss); |
| |
| var _postcssValueParser = require('postcss-value-parser'); |
| |
| var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser); |
| |
| var _cssnanoUtilGetArguments = require('cssnano-util-get-arguments'); |
| |
| var _cssnanoUtilGetArguments2 = _interopRequireDefault(_cssnanoUtilGetArguments); |
| |
| var _cssnanoUtilGetMatch = require('cssnano-util-get-match'); |
| |
| var _cssnanoUtilGetMatch2 = _interopRequireDefault(_cssnanoUtilGetMatch); |
| |
| var _map = require('./lib/map'); |
| |
| var _map2 = _interopRequireDefault(_map); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| function evenValues(list, index) { |
| return index % 2 === 0; |
| } |
| |
| const repeatKeywords = _map2.default.map(mapping => mapping[0]); |
| |
| const getMatch = (0, _cssnanoUtilGetMatch2.default)(_map2.default); |
| |
| exports.default = _postcss2.default.plugin('postcss-normalize-repeat-style', () => { |
| return css => { |
| const cache = {}; |
| |
| css.walkDecls(/background(-repeat)?|(-webkit-)?mask-repeat/i, decl => { |
| const value = decl.value; |
| |
| if (cache[value]) { |
| decl.value = cache[value]; |
| |
| return; |
| } |
| |
| const parsed = (0, _postcssValueParser2.default)(value); |
| |
| if (parsed.nodes.length === 1) { |
| cache[value] = value; |
| |
| return; |
| } |
| |
| const args = (0, _cssnanoUtilGetArguments2.default)(parsed); |
| const relevant = []; |
| |
| args.forEach(arg => { |
| relevant.push({ |
| start: null, |
| end: null |
| }); |
| |
| arg.forEach((part, index) => { |
| const isRepeat = ~repeatKeywords.indexOf(part.value.toLowerCase()); |
| const len = relevant.length - 1; |
| |
| if (relevant[len].start === null && isRepeat) { |
| relevant[len].start = index; |
| relevant[len].end = index; |
| |
| return; |
| } |
| |
| if (relevant[len].start !== null) { |
| if (part.type === 'space') { |
| return; |
| } else if (isRepeat) { |
| relevant[len].end = index; |
| |
| return; |
| } |
| |
| return; |
| } |
| }); |
| }); |
| |
| relevant.forEach((range, index) => { |
| if (range.start === null) { |
| return; |
| } |
| |
| const val = args[index].slice(range.start, range.end + 1); |
| |
| if (val.length !== 3) { |
| return; |
| } |
| |
| const match = getMatch(val.filter(evenValues).map(n => n.value.toLowerCase())); |
| |
| if (match) { |
| args[index][range.start].value = match; |
| args[index][range.start + 1].value = ''; |
| args[index][range.end].value = ''; |
| } |
| }); |
| |
| const result = parsed.toString(); |
| |
| decl.value = result; |
| cache[value] = result; |
| }); |
| }; |
| }); |
| module.exports = exports['default']; |