39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
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/**
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* Meta Helper
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* @description Generate meta tags for HTML header
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* @example
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* <%- meta(post) %>
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*/
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function trim (str) {
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return str.trim().replace(/^"(.*)"$/, '$1').replace(/^'(.*)'$/, '$1');
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}
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function split (str, sep) {
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var result = [];
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var matched = null;
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while (matched = sep.exec(str)) {
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result.push(matched[0]);
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}
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return result;
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}
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hexo.extend.helper.register('meta', function (post) {
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var metas = post.meta || [];
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var output = '';
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var metaDOMArray = metas.map(function (meta) {
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var entities = split(meta, /(?:[^\\;]+|\\.)+/g);
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var entityArray = entities.map(function (entity) {
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var keyValue = split(entity, /(?:[^\\=]+|\\.)+/g);
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if (keyValue.length < 2) {
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return null;
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}
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var key = trim(keyValue[0]);
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var value = trim(keyValue[1]);
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return key + '="' + value + '"';
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}).filter(function (entity) {
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return entity;
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});
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return '<meta ' + entityArray.join(' ') + ' />';
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});
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return metaDOMArray.join('\n');
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});
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