walkADir.js

walkADir.js

// 2010-12-15 jorge@jorgechamorro.com
// Uses 2 threads

function walk (file, cb) {
  var fs = require('fs');
  var e= {path:file, q:[]};
  var q= [e];
  begin();
  
  function begin () { 
    fs.lstat(file, gotStat);
    cb(file);
  }
  
  function gotStat (err, stat) {
    if (err || !stat.isDirectory()) next();
    else fs.readdir(file, gotDir);
  }
  
  function gotDir (err, files) {
    if (err) throw Error(err);
    files.sort(sort);
    e= {path:file, q:files};
    q.push(e);
    next();
  }
  
  function next () {
    if (e.q.length) {
      file= [e.path, '/', e.q.pop()].join('');
      begin();
    }
    else if (q.length-= 1) {
      e= q[q.length- 1];
      next();
    }
  }

  function sort (a,b) {
    a= a.toLowerCase();
    b= b.toLowerCase();
    return (a < b) ? 1 : (a > b) ? -1 : 0;
  }
}

// your callback here
var ctr= 0;
function callBack (file) { console.log( ["[", ++ctr, "] ", file].join('') ) };

process.argv.forEach(function(val, index, array) {
  if (index > 1) walk(val, callBack);
});