58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
var FS = require('fs');
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var Path = require('path');
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var Markdown = require('markdown').markdown;
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// This function is used to map wiki page names to files
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// on the real filesystem.
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function pathFromName(name) {
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return Path.join(__dirname, "pages", name + ".markdown");
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}
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// Load a file from disk and parse out the title and generate the HTML
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exports.loadPage = function (name, callback) {
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// Attempt to load the file from disk
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var path = pathFromName(name);
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FS.readFile(path, 'utf8', function (err, markdown) {
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var exists = true;
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if (err) {
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// If it's not there, generate a placeholder body
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if (err.code === "ENOENT") {
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markdown = "# " + name.replace(/_/g, " ") + "\n\n" +
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"This page does not exist yet. Be the first to write it.";
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exists = false;
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} else {
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// Forward all other errors on
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return callback(err);
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}
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}
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// Parse the markdown extracting the first header as the title
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// and then render as an HTML string
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var tree = Markdown.parse(markdown);
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var title = name;
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for (var i = 1, l = tree.length; i < l; i++) {
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if (tree[i] && tree[i][0] === "header") {
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title = tree[i][2];
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tree.splice(i, 1);
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break;
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}
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}
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var html = Markdown.toHTML(tree);
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// Send back the page as an object
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callback(null, {
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name: name,
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title: title,
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exists: exists,
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markdown: markdown,
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html: html,
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});
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});
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};
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// Saving is simple. Just put the markdown in the file
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exports.savePage = function (name, value, callback) {
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var path = pathFromName(name);
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FS.writeFile(path, value, callback);
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};
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