rename for web

rename-web.js

var fs = require('fs');
var pathl = require('path');

function traverse(path, next) {
  fs.stat(path, function (err, stat) {
    if (err) return next(err);
    if(stat.isFile()) {
      return func(path, next);
    }
    if(stat.isDirectory()) {
      fs.readdir(path, function (err, fnames) {
        if (err) return next(err);
        var i = 0;
        function loop() {
          if (i == fnames.length) {
            return next();
          }
          var fname = fnames[i++];
          traverse(path + '/' + fname, function (err) {
            if (err) return next(err);
            setImmediate(loop);
          });
        }
        loop();
      });
    }
  });
};

function func(path, next) {
  //console.log('org: ' + path);
  var dir = pathl.dirname(path);
  var base = pathl.basename(path);
  var nbase = base.toLowerCase().replace(/ /g, '-').replace(/\.txt$/, '.md');
  if (base != nbase) {
    var npath = dir + '/' + nbase;
    fs.renameSync(path, npath);
    console.log(npath);
  }
  next();
}

process.on('uncaughtException', function (err) {
  console.error('UNCAUGHT EXCEPTION');
  if (err.stack) {
    console.error(err.stack);
  } else {
    console.log(require('util').inspect(err));
  }
});

if (process.argv[2]) {
  traverse(process.argv[2], function (err) {
    if (err) throw err;
  });
} else {
  console.log('no argument');
}