110 lines
3.5 KiB
JavaScript
110 lines
3.5 KiB
JavaScript
/**
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* Helper functions related the site properties.
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*
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* @example
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* <%- is_same_link(url_a, url_b) %>
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* <%- get_domain(url) %>
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* <%- post_count() %>
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* <%- category_count() %>
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* <%- tag_count() %>
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* <%- duration() %>
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* <%- word_count(content) %>
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* <%- md5(data) %>
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* <%- meta() %>
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* <%- hexo_version() %>
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*/
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const URL = require('url').URL;
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const moment = require('moment');
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const crypto = require('crypto');
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module.exports = function (hexo) {
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hexo.extend.helper.register('is_same_link', function (a, b) {
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function santize(url) {
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let paths = url.replace(/(^\w+:|^)\/\//, '').split('#')[0].split('/').filter(p => p.trim() !== '');
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if (paths.length > 0 && paths[paths.length - 1].trim() === 'index.html') {
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paths = paths.slice(0, paths.length - 1)
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}
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return paths.join('/');
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}
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return santize(this.url_for(a)) == santize(this.url_for(b));
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});
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hexo.extend.helper.register('get_domain', function (link) {
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const url = new URL(link);
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return url.hostname;
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});
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hexo.extend.helper.register('post_count', function () {
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return this.site.posts.length;
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});
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hexo.extend.helper.register('category_count', function () {
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return this.site.categories.filter(category => category.length).length;
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});
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hexo.extend.helper.register('tag_count', function () {
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return this.site.tags.filter(tag => tag.length).length;
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});
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/**
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* Export moment.duration
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*/
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hexo.extend.helper.register('duration', function () {
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return moment.duration.apply(moment, arguments);
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});
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/**
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* Get the word count of a paragraph.
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*/
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hexo.extend.helper.register('word_count', function (content) {
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if (typeof(content) == "undefined") {
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return 0
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}
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content = content.replace(/<\/?[a-z][^>]*>/gi, '');
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content = content.trim();
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return content ? (content.match(/[\u00ff-\uffff]|[a-zA-Z]+/g) || []).length : 0;
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});
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hexo.extend.helper.register('md5', function (data) {
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return crypto.createHash('md5').update(data).digest("hex");
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});
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hexo.extend.helper.register('meta', function () {
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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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const result = [];
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let 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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const getConfig = hexo.extend.helper.get('get_config').bind(this);
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const metas = getConfig('meta', []);
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const metaDOMArray = metas.map(function (meta) {
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const entities = split(meta, /(?:[^\\;]+|\\.)+/g);
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const entityArray = entities.map(function (entity) {
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const 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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const key = trim(keyValue[0]);
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const 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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hexo.extend.helper.register('hexo_version', function (data) {
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return hexo.version;
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});
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}
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