formdata.js

// Generated by CoffeeScript 1.7.1
(function(self) {
  var BOUNDARY, BlobPart, CRLF, FormData, StringPart, support;
  if (self.FormData) {
    return;
  }
  support = {
    arrayBuffer: !!self.ArrayBuffer,
    blob: !!self.FileReader && !!self.Blob && (function() {
      try {
        new Blob();
        return true;
      } catch (_error) {
        return false;
      }
    })()
  };
  CRLF = "\r\n";
  BOUNDARY = "--------FormData" + Math.random();
  StringPart = (function() {
    function StringPart(name, value) {
      this.name = name;
      this.value = value;
    }

    StringPart.prototype.convertToString = function() {
      var lines;
      lines = [];
      return new Promise((function(_this) {
        return function(resolve) {
          lines.push("--" + BOUNDARY + CRLF);
          lines.push("Content-Disposition: form-data; name=\"" + _this.name + "\";" + CRLF + CRLF);
          lines.push("" + _this.value + CRLF);
          return resolve(lines.join(''));
        };
      })(this));
    };

    return StringPart;

  })();
  BlobPart = (function() {
    function BlobPart(name, filename, souce) {
      this.name = name;
      this.filename = filename;
      this.souce = souce;
    }

    BlobPart.prototype._readArrayBufferAsString = function(buff) {
      var view;
      view = new Uint8Array(buff);
      return view.reduce(function(acc, b) {
        acc.push(String.fromCharCode(b));
        return acc;
      }, new Array(view.length)).join('');
    };

    BlobPart.prototype._readBlobAsArrayBuffer = function() {
      return new Promise((function(_this) {
        return function(resolve) {
          var reader;
          reader = new FileReader();
          reader.readAsArrayBuffer(_this.souce);
          return reader.onload = function() {
            return resolve(_this._readArrayBufferAsString(reader.result));
          };
        };
      })(this));
    };

    BlobPart.prototype._readBlobAsBinary = function() {
      return new Promise((function(_this) {
        return function(resolve) {
          return resolve(_this.souce.getAsBinary());
        };
      })(this));
    };

    BlobPart.prototype.convertToString = function() {
      var lines;
      lines = [];
      lines.push("--" + BOUNDARY + CRLF);
      lines.push("Content-Disposition: form-data; name=\"" + this.name + "\"; filename=\"" + this.filename + "\"" + CRLF);
      lines.push("Content-Type: " + this.souce.type + CRLF + CRLF);
      if (support.blob && support.arrayBuffer) {
        return this._readBlobAsArrayBuffer().then(function(strings) {
          lines.push(strings + CRLF);
          return lines.join('');
        });
      } else {
        return this._readBlobAsBinary().then(function(strings) {
          lines.push(strings + CRLF);
          return lines.join('');
        });
      }
    };

    return BlobPart;

  })();
  FormData = (function() {
    function FormData() {
      this.polyfill = true;
      this._parts = [];
      this.boundary = BOUNDARY;
    }

    FormData.prototype._stringToTypedArray = function(string) {
      var bytes;
      bytes = Array.prototype.map.call(string, function(s) {
        return s.charCodeAt(0);
      });
      return new Uint8Array(bytes);
    };

    FormData.prototype.append = function(key, value) {
      var part;
      part = null;
      if (typeof value === "string") {
        part = new StringPart(key, value);
      } else if (value instanceof Blob) {
        part = new BlobPart(key, value.name || "blob", value);
      } else {
        part = new StringPart(key, value);
      }
      if (part) {
        this._parts.push(part);
      }
      return this;
    };

    FormData.prototype.toString = function() {
      var parts;
      parts = this._parts;
      return Promise.all(this._parts.map(function(part) {
        return part.convertToString();
      })).then(function(lines) {
        lines.push("--" + BOUNDARY + "--");
        return lines.join('');
      }).then(this._stringToTypedArray);
    };

    return FormData;

  })();
  return self.FormData = FormData;
})(typeof self !== 'undefined' ? self : this);