TypeScript/scripts/word2md.js

var sys = (function () {
    var fileStream = new ActiveXObject("ADODB.Stream");
    fileStream.Type = 2;
    var binaryStream = new ActiveXObject("ADODB.Stream");
    binaryStream.Type = 1;
    var args = [];
    for (var i = 0; i < WScript.Arguments.length; i++) {
        args[i] = WScript.Arguments.Item(i);
    }
    return {
        args: args,
        createObject: function (typeName) { return new ActiveXObject(typeName); },
        write: function (s) {
            WScript.StdOut.Write(s);
        },
        writeFile: function (fileName, data) {
            fileStream.Open();
            binaryStream.Open();
            try {
                fileStream.Charset = "utf-8";
                fileStream.WriteText(data);
                fileStream.Position = 3;
                fileStream.CopyTo(binaryStream);
                binaryStream.SaveToFile(fileName, 2);
            }
            finally {
                binaryStream.Close();
                fileStream.Close();
            }
        }
    };
})();
function convertDocumentToMarkdown(doc) {
    var result = "";
    var lastStyle;
    var lastInTable;
    var tableColumnCount;
    var tableCellIndex;
    var columnAlignment = [];
    function setProperties(target, properties) {
        for (var name in properties) {
            if (properties.hasOwnProperty(name)) {
                var value = properties[name];
                if (typeof value === "object") {
                    setProperties(target[name], value);
                }
                else {
                    target[name] = value;
                }
            }
        }
    }
    function findReplace(findText, findOptions, replaceText, replaceOptions) {
        var find = doc.range().find;
        find.clearFormatting();
        setProperties(find, findOptions);
        var replace = find.replacement;
        replace.clearFormatting();
        setProperties(replace, replaceOptions);
        find.execute(findText, false, false, false, false, false, true, 0, true, replaceText, 2);
    }
    function write(s) {
        result += s;
    }
    function writeTableHeader() {
        for (var i = 0; i < tableColumnCount - 1; i++) {
            switch (columnAlignment[i]) {
                case 1:
                    write("|:---:");
                    break;
                case 2:
                    write("|---:");
                    break;
                default:
                    write("|---");
            }
        }
        write("|\n");
    }
    function trimEndFormattingMarks(text) {
        var i = text.length;
        while (i > 0 && text.charCodeAt(i - 1) < 0x20)
            i--;
        return text.substr(0, i);
    }
    function writeBlockEnd() {
        switch (lastStyle) {
            case "Code":
                write("```\n\n");
                break;
            case "List Paragraph":
            case "Table":
            case "TOC":
                write("\n");
                break;
        }
    }
    function writeParagraph(p) {
        var text = p.range.text;
        var style = p.style.nameLocal;
        var inTable = p.range.tables.count > 0;
        var level = 1;
        var sectionBreak = text.indexOf("\x0C") >= 0;
        text = trimEndFormattingMarks(text);
        if (inTable) {
            style = "Table";
        }
        else if (style.match(/\s\d$/)) {
            level = +style.substr(style.length - 1);
            style = style.substr(0, style.length - 2);
        }
        if (lastStyle && style !== lastStyle) {
            writeBlockEnd();
        }
        switch (style) {
            case "Heading":
            case "Appendix":
                var section = p.range.listFormat.listString;
                write("####".substr(0, level) + ' <a name="' + section + '"/>' + section + " " + text + "\n\n");
                break;
            case "Normal":
                if (text.length) {
                    write(text + "\n\n");
                }
                break;
            case "List Paragraph":
                write("        ".substr(0, p.range.listFormat.listLevelNumber * 2 - 2) + "* " + text + "\n");
                break;
            case "Grammar":
                write("&emsp;&emsp;" + text.replace(/\s\s\s/g, "&emsp;").replace(/\x0B/g, "  \n&emsp;&emsp;&emsp;") + "\n\n");
                break;
            case "Code":
                if (lastStyle !== "Code") {
                    write("```TypeScript\n");
                }
                else {
                    write("\n");
                }
                write(text.replace(/\x0B/g, "  \n") + "\n");
                break;
            case "Table":
                if (!lastInTable) {
                    tableColumnCount = p.range.tables.item(1).columns.count + 1;
                    tableCellIndex = 0;
                }
                if (tableCellIndex < tableColumnCount) {
                    columnAlignment[tableCellIndex] = p.alignment;
                }
                write("|" + text);
                tableCellIndex++;
                if (tableCellIndex % tableColumnCount === 0) {
                    write("\n");
                    if (tableCellIndex === tableColumnCount) {
                        writeTableHeader();
                    }
                }
                break;
            case "TOC Heading":
                write("## " + text + "\n\n");
                break;
            case "TOC":
                var strings = text.split("\t");
                write("        ".substr(0, level * 2 - 2) + "* [" + strings[0] + " " + strings[1] + "](#" + strings[0] + ")\n");
                break;
        }
        if (sectionBreak) {
            write("<br/>\n\n");
        }
        lastStyle = style;
        lastInTable = inTable;
    }
    function writeDocument() {
        var title = doc.builtInDocumentProperties.item(1) + "";
        if (title.length) {
            write("# " + title + "\n\n");
        }
        for (var p = doc.paragraphs.first; p; p = p.next()) {
            writeParagraph(p);
        }
        writeBlockEnd();
    }
    findReplace("<", {}, "&lt;", {});
    findReplace("&lt;", { style: "Code" }, "<", {});
    findReplace("&lt;", { style: "Code Fragment" }, "<", {});
    findReplace("&lt;", { style: "Terminal" }, "<", {});
    findReplace("", { font: { subscript: true } }, "<sub>^&</sub>", { font: { subscript: false } });
    findReplace("", { style: "Code Fragment" }, "`^&`", { style: -66 });
    findReplace("", { style: "Production" }, "*^&*", { style: -66 });
    findReplace("", { style: "Terminal" }, "`^&`", { style: -66 });
    findReplace("", { font: { bold: true, italic: true } }, "***^&***", { font: { bold: false, italic: false } });
    findReplace("", { font: { italic: true } }, "*^&*", { font: { italic: false } });
    doc.fields.toggleShowCodes();
    findReplace("^19 REF", {}, "[^&](#^&)", {});
    doc.fields.toggleShowCodes();
    writeDocument();
    result = result.replace(/\x85/g, "\u2026");
    result = result.replace(/\x96/g, "\u2013");
    result = result.replace(/\x97/g, "\u2014");
    return result;
}
function main(args) {
    if (args.length !== 2) {
        sys.write("Syntax: word2md <inputfile> <outputfile>\n");
        return;
    }
    var app = sys.createObject("Word.Application");
    var doc = app.documents.open(args[0]);
    sys.writeFile(args[1], convertDocumentToMarkdown(doc));
    doc.close(false);
    app.quit();
}
main(sys.args);