MarkedMathJaxWiki.js

"use strict";
/**
 * MarkedMathJaxWiki
 *
 * It combines Marked, MathJax and highlight.js into an engine that renders
 * markdown files with latex-embedded and does Wiki-like references
 * replacement.
 *
 * Wiki references are nested in double brackets like:
 *     The [[reference]] can be...
 * The reference can be displayed with diferent text like
 *     The [[reference | alternative text]] can be...
 *
 * To type Latex there are two ways: inline and display mode. To type
 * inline use \\( to begin math mode and \\) to end math mode:
 *     When \\(x \gt 3\\) the value...
 * To type in display mode use $$ to start and end math mode:
 *     $$a^2=b^2+c^2$$
 *
 * The code hihglighted start with (javascript example)
 *     ```javascript
 *     function plus(a,b) {
 *         return (a+b);
 *     }
 *     ```
 *
 * depends: parseURI.ts
 */
var MarkedMathJaxWikiContainer;
var MarkedMathJaxWikiPrefix = "";
var MarkedMathJaxWikiPathname = "";
var MarkedMathJaxWikiDefault = "";
var MarkedMathJaxWikiURL = "";
var MarkedMathJaxWikiAddLabel = false;
var MarkedMathJaxWikiOnLoad = [];
//const WikiReference = /(\[\[)([^\[\]]+)(\]\])/gm;
const WikiReference = /(\[\[)(([^\[\]]|\[(?!\[)|\](?!\]))+)(\]\])/gm;
function replaceWikiReference(mdstr) {
    let result = "";
    let last_match = 0;
    let match;
    let match_ref;
    let ref, disp;
    let cmd = "";
    do {
        match = WikiReference.exec(mdstr);
        if (match) {
            result += mdstr.substring(last_match, match.index);
            last_match = match.index + match['0'].length;
            match_ref = match['2'].split("|");
            ref = match_ref[0].trim();
            let colon = ref.indexOf(":");
            if (colon >= 0) {
                cmd = ref.substring(0, colon);
            }
            if (match_ref.length == 1) {
                disp = match_ref[0].trim();
            }
            else if (match_ref.length == 2) {
                disp = match_ref[1].trim();
            }
            else {
                throw new Error("replaceWikiReference: invalid reference: " + match['0']);
            }
            let src;
            switch (cmd) {
                case "":
                case "md":
                    if (ref.indexOf("://") == -1) {
                        ref = MarkedMathJaxWikiPathname +
                            "?url=" +
                            encodeURIComponent(MarkedMathJaxWikiPrefix +
                                ref.replace(/ /g, "_")) +
                            ".md";
                    }
                    result += `[${disp}](${ref})`;
                    break;
                case "js":
                    src = eval(ref);
                    result += "```javascript\n";
                    if (typeof src == 'function') {
                        result += src;
                    }
                    else {
                        result += ref + " = " + src;
                    }
                    result += "\n```\n";
                    break;
                case "javascript":
                    MarkedMathJaxWikiOnLoad.push(ref);
                    result += "\n";
                    break;
            }
        }
    } while (match);
    result += mdstr.substring(last_match);
    return result;
}
function MarkedMathJaxWikiListener() {
    let md_prefix;
    if (MarkedMathJaxWikiAddLabel) {
        md_prefix = decodeURIComponent(MarkedMathJaxWikiURL.substring(MarkedMathJaxWikiURL.lastIndexOf("/") + 1, MarkedMathJaxWikiURL.lastIndexOf("."))).replace(/_/g, " ");
        md_prefix = (md_prefix != "README") ? ("# " + md_prefix + "\n\n") : "";
    }
    else {
        md_prefix = "";
    }
    MarkedMathJaxWikiContainer.innerHTML = marked.parse(md_prefix + replaceWikiReference(this.responseText));
    document.title = document.getElementsByTagName('h1')[0].innerHTML;
    for (let i = 0; i < MarkedMathJaxWikiOnLoad.length; i++) {
        eval(MarkedMathJaxWikiOnLoad[i]);
    }
    MathJax.typeset();
    hljs.highlightAll();
}
;
function MarkedMathJaxWiki(element, default_md, addlabel) {
    MarkedMathJaxWikiContainer = (typeof element == 'string') ? document.getElementById(element) : element;
    MarkedMathJaxWikiDefault = (default_md) ? default_md : "";
    MarkedMathJaxWikiAddLabel = (addlabel) ? addlabel : false;
    if (MarkedMathJaxWikiContainer) {
        let parameters = parseURI();
        MarkedMathJaxWikiPathname = parameters['$pathname'];
        if ('url' in parameters) {
            MarkedMathJaxWikiPrefix = parameters.url.substring(0, parameters.url.lastIndexOf("/") + 1);
            MarkedMathJaxWikiURL = parameters.url;
        }
        else if (default_md) {
            MarkedMathJaxWikiPrefix = default_md.substring(0, default_md.lastIndexOf("/") + 1);
            MarkedMathJaxWikiURL = default_md;
        }
        else {
            throw new URIError("MarkedMathJaxWiki: file parameter not found in URI or function call.");
        }
        let oReq = new XMLHttpRequest();
        oReq.onload = MarkedMathJaxWikiListener;
        oReq.open("get", MarkedMathJaxWikiURL, true);
        oReq.send();
    }
}