showdown.js 28 KB
"use strict";function _typeof(e){return(_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function getDefaultOpts(e){var r={omitExtraWLInCodeBlocks:{defaultValue:!1,describe:"Omit the default extra whiteline added to code blocks",type:"boolean"},noHeaderId:{defaultValue:!1,describe:"Turn on/off generated header id",type:"boolean"},prefixHeaderId:{defaultValue:!1,describe:"Specify a prefix to generated header ids",type:"string"},headerLevelStart:{defaultValue:!1,describe:"The header blocks level start",type:"integer"},parseImgDimensions:{defaultValue:!1,describe:"Turn on/off image dimension parsing",type:"boolean"},simplifiedAutoLink:{defaultValue:!1,describe:"Turn on/off GFM autolink style",type:"boolean"},literalMidWordUnderscores:{defaultValue:!1,describe:"Parse midword underscores as literal underscores",type:"boolean"},strikethrough:{defaultValue:!1,describe:"Turn on/off strikethrough support",type:"boolean"},tables:{defaultValue:!1,describe:"Turn on/off tables support",type:"boolean"},tablesHeaderId:{defaultValue:!1,describe:"Add an id to table headers",type:"boolean"},ghCodeBlocks:{defaultValue:!0,describe:"Turn on/off GFM fenced code blocks support",type:"boolean"},tasklists:{defaultValue:!1,describe:"Turn on/off GFM tasklist support",type:"boolean"},smoothLivePreview:{defaultValue:!1,describe:"Prevents weird effects in live previews due to incomplete input",type:"boolean"},smartIndentationFix:{defaultValue:!1,description:"Tries to smartly fix identation in es6 strings",type:"boolean"}};if(!1===e)return JSON.parse(JSON.stringify(r));var n={};for(var t in r)r.hasOwnProperty(t)&&(n[t]=r[t].defaultValue);return n}var showdown={},parsers={},extensions={},globalOptions=getDefaultOpts(!0),flavor={github:{omitExtraWLInCodeBlocks:!0,prefixHeaderId:"user-content-",simplifiedAutoLink:!0,literalMidWordUnderscores:!0,strikethrough:!0,tables:!0,tablesHeaderId:!0,ghCodeBlocks:!0,tasklists:!0},vanilla:getDefaultOpts(!0)};function validate(e,r){var n=r?"Error in "+r+" extension->":"Error in unnamed extension",t={valid:!0,error:""};showdown.helper.isArray(e)||(e=[e]);for(var o=0;o<e.length;++o){var s=n+" sub-extension "+o+": ",a=e[o];if("object"!==_typeof(a))return t.valid=!1,t.error=s+"must be an object, but "+_typeof(a)+" given",t;if(!showdown.helper.isString(a.type))return t.valid=!1,t.error=s+'property "type" must be a string, but '+_typeof(a.type)+" given",t;var i=a.type=a.type.toLowerCase();if("language"===i&&(i=a.type="lang"),"html"===i&&(i=a.type="output"),"lang"!==i&&"output"!==i&&"listener"!==i)return t.valid=!1,t.error=s+"type "+i+' is not recognized. 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i},showdown.helper.isUndefined(console)&&(console={warn:function(e){alert(e)},log:function(e){alert(e)},error:function(e){throw e}}),showdown.Converter=function(n){var s={},a=[],i=[],l={};function t(e,r){if(r=r||null,showdown.helper.isString(e)){if(r=e=showdown.helper.stdExtName(e),showdown.extensions[e])return void function(e,r){"function"==typeof e&&(e=e(new showdown.Converter));showdown.helper.isArray(e)||(e=[e]);var n=validate(e,r);if(!n.valid)throw Error(n.error);for(var t=0;t<e.length;++t)switch(e[t].type){case"lang":a.push(e[t]);break;case"output":i.push(e[t]);break;default:throw Error("Extension loader error: Type unrecognized!!!")}}(showdown.extensions[e],e);if(showdown.helper.isUndefined(extensions[e]))throw Error('Extension "'+e+'" could not be loaded. 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r=flavor[e];for(var n in r)r.hasOwnProperty(n)&&(s[n]=r[n])}},this.removeExtension=function(e){showdown.helper.isArray(e)||(e=[e]);for(var r=0;r<e.length;++r){for(var n=e[r],t=0;t<a.length;++t)a[t]===n&&a[t].splice(t,1);for(;0<i.length;++t)i[0]===n&&i[0].splice(t,1)}},this.getAllExtensions=function(){return{language:a,output:i}}},showdown.subParser("anchors",function(e,r,p){var n=function(e,r,n,t,o,s,a,i){showdown.helper.isUndefined(i)&&(i=""),e=r;var l=n,c=t.toLowerCase(),h=o,u=i;if(!h)if(c||(c=l.toLowerCase().replace(/ ?\n/g," ")),h="#"+c,showdown.helper.isUndefined(p.gUrls[c])){if(!(-1<e.search(/\(\s*\)$/m)))return e;h=""}else h=p.gUrls[c],showdown.helper.isUndefined(p.gTitles[c])||(u=p.gTitles[c]);var d='<a href="'+(h=showdown.helper.escapeCharacters(h,"*_",!1))+'"';return""!==u&&null!==u&&(u=u.replace(/"/g,"&quot;"),d+=' title="'+(u=showdown.helper.escapeCharacters(u,"*_",!1))+'"'),d+=">"+l+"</a>"};return 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