Aperture library extractor -- copies all source images from a apimportgroup inside a aplibrary into any folder.

extract-aperture-images.js

// Aperture library extractor -- copies all source images from a apimportgroup inside a aplibrary
// into any folder.
//
// Step 1. Create a new folder somewhere, for instance in ~/ap-rescue
//
// Step 2. Run this program, giving it the apimportgroup as the first argument and your
//         destination directory as the second argument.
//
//   e.g.  node extract-aperture-images.js ~/'Pictures/Aperture Library 2000.aplibrary/Arkivet.approject/2006-01-15 @ 03:57:21 PM - 1.apimportgroup' ~/ap-rescue
//
// Step 3. Wait for the script to finish and watch for any errors.
// 
var fs = require('fs'), Path = require('path');
var exec = require('child_process').exec;

if (process.argv.length < 4) {
  console.error('usage: '+process.argv[1]+' <srcdir> <dstdir>');
  process.exit(1);
}

function firstCharIsNotADot(fn) { return fn[0] !== '.'; }
function shellEscape(s) { return s.replace(/'/g, "'\"'\"'"); }

var basedir = process.argv[2];
var dstDir = process.argv[3];
var dirs = fs.readdirSync(basedir).filter(firstCharIsNotADot);
var apfnRE = /\.(?:apfile|apmaster|apversion)$/;
var filesToCopy = [];

dirs.forEach(function (dir) {
  var dirname = basedir + '/' + dir;
  var fns = fs.readdirSync(dirname);
  var filenames = fns.filter(function (fn) {
    return fn !== 'Previews' && fn !== 'Thumbnails' && !fn.match(apfnRE);
  }).map(function (fn) {
    return dirname + '/' + fn;
  });
  if (filenames.length !== 0)
    filesToCopy = filesToCopy.concat(filenames);
});

function copyNext(callback, _state) {
  if (_state === undefined) _state = {};
  var filename = filesToCopy.shift();
  if (filename === undefined)
    return callback();
  var dstFilename = dstDir + '/' + Path.basename(filename);
  if (fs.existsSync(dstFilename)) {
    dstFilename = dstDir + '/' + Path.basename(Path.dirname(filename)).toLowerCase() + Path.extname(filename);
    if (fs.existsSync(dstFilename)) {
      console.error('Warning: Ignoring already existing image \''+shellEscape(dstFilename)+'\'');
      return process.nextTick(function () { copyNext(callback, _state); });
    }
  }
  var shellCmd = "/bin/cp -nPp '"+shellEscape(filename)+"' '"+shellEscape(dstFilename)+"'";
  exec(shellCmd, function (error, stdout, stderr) {
    if (error !== null)
      console.error('Error: ' + stderr + ' (err: '+error+
                    ', filename: \''+shellEscape(filename)+'\')');
    copyNext(callback, _state);
  });
}

copyNext(function () {
  console.log('done');
});