markdown_watcher.js

/* Simple node.js script to automatically generate HTML from Markdown files whenever
 * they are changed. Requires [node-glob][1]. TODO: Watch for new files.
 *
 * [1]: http://github.com/isaacs/node-glob
 */
var fs = require('fs'),
    sys = require('sys'),
    path = require('path'),
    spawn = require('child_process').spawn,
    glob = require('./glob').glob,
    generateHtml = function(f) {
        var target = path.join('html', path.basename(f, '.markdown')+'.html' )
            maruku = spawn('maruku', ['-o', target, '--html', f]);

        maruku.stderr.addListener('data', function(data) {
            sys.print("stderr: ", data);
        });

        maruku.addListener('exit', function(code) {
            if (code == 0) {
                sys.puts(f + " => " + target);
            } else {
                sys.puts(f + " failed");
            }
        });
    };

glob('*.markdown').forEach(function(f) {
    sys.puts('Watching ' + f);
    sys.puts('generate ' + f);
    generateHtml(f);
    fs.watchFile(f, function(curr, prev) {
        if (curr.mtime > prev.mtime) {
            sys.puts("regenerate " + f);
            generateHtml(f);
        }
    });
});