50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
/**
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* 工具函数
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*
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* @author 老雷<leizongmin@gmail.com>
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*/
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var utils = module.exports;
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/**
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* 过滤代码块
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*
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* @param {array} tags 要隐藏的标签列表
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* @param {function} next 对不在列表中的标签的处理函数
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*/
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utils.tagFilter = function (tags, next) {
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if (typeof(next) !== 'function') {
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next = function () {};
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}
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var hidden = [];
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var posStart = false;
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return {
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onIgnoreTag: function (tag, html, options) {
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if (tags.indexOf(tag) !== -1) {
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var ret = '[removed]';
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if (posStart !== false && options.isClosing) {
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var end = options.position + ret.length;
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hidden.push([posStart, end]);
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posStart = false;
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} else {
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posStart = options.position;
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}
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return ret;
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} else {
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return next(tag, html, options);
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}
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},
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filter: function (html) {
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var rethtml = '';
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var lastPos = 0;
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hidden.forEach(function (pos) {
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rethtml += html.slice(lastPos, pos[0]);
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lastPos = pos[1];
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});
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rethtml += html.slice(lastPos);
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return rethtml;
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}
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};
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};
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