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70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
6 years ago
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// This extractor is used in advanced optimizations
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// IMPORTANT: Mind Token class and this code is not related!
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// Properties will be tokenized in one step, see #429
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var stringifySelectors = require('../stringifier/one-time').selectors;
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var stringifyValue = require('../stringifier/one-time').value;
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var AT_RULE = 'at-rule';
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function extract(token) {
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var properties = [];
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if (token[0] == 'selector') {
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var inSpecificSelector = !/[\.\+>~]/.test(stringifySelectors(token[1]));
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for (var i = 0, l = token[2].length; i < l; i++) {
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var property = token[2][i];
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if (property.indexOf('__ESCAPED') === 0)
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continue;
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if (property[0] == AT_RULE)
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continue;
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var name = token[2][i][0][0];
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if (name.length === 0)
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continue;
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if (name.indexOf('--') === 0)
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continue;
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var value = stringifyValue(token[2], i);
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properties.push([
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name,
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value,
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findNameRoot(name),
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token[2][i],
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name + ':' + value,
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token[1],
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inSpecificSelector
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]);
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}
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} else if (token[0] == 'block') {
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for (var j = 0, k = token[2].length; j < k; j++) {
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properties = properties.concat(extract(token[2][j]));
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}
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}
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return properties;
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}
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function findNameRoot(name) {
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if (name == 'list-style')
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return name;
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if (name.indexOf('-radius') > 0)
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return 'border-radius';
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if (name == 'border-collapse' || name == 'border-spacing' || name == 'border-image')
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return name;
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if (name.indexOf('border-') === 0 && /^border\-\w+\-\w+$/.test(name))
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return name.match(/border\-\w+/)[0];
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if (name.indexOf('border-') === 0 && /^border\-\w+$/.test(name))
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return 'border';
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if (name.indexOf('text-') === 0)
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return name;
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return name.replace(/^\-\w+\-/, '').match(/([a-zA-Z]+)/)[0].toLowerCase();
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}
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module.exports = extract;
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