Recovery code for piskel files with weird encoding issues.

decode_and_recover.js

decodePiskelFile : function (rawPiskel, onSuccess, onError) {
      try {
        var serializedPiskel = JSON.parse(rawPiskel);
        var piskel = serializedPiskel.piskel;
        pskl.utils.serialization.Deserializer.deserialize(serializedPiskel, function (piskel) {
          onSuccess(piskel);
        });
      } catch (e) {
        var layers = [];
        var isInLayer = false;
        for (var i = 0 ; i < rawPiskel.length ; i++) {
          var c = rawPiskel.charCodeAt(i);
          if (isInLayer) {
            if (c > 30) {
              layers[layers.length - 1].push(c);
            } else {
              isInLayer = false;
            }
          } else {
            var isValidSequence = [i, i+1, i+2, i+3, i+4].every(function (_i) {
              return rawPiskel.charCodeAt(_i) > 30;
            });
            if (isValidSequence) {
              isInLayer = true;
              layers.push([c]);
            }
          }
        }
        console.log(layers);
      }
    }