/* Blob.js

 * A Blob implementation.

 * 2013-06-20

 *

 * By Eli Grey, http://eligrey.com

 * By Devin Samarin, https://github.com/eboyjr

 * License: X11/MIT

 *   See LICENSE.md

 */

/*global self, unescape */

/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,

  plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

if (typeof Blob !== "function" || typeof URL === "undefined")

if (typeof Blob === "function" && typeof webkitURL !== "undefined") self.URL = webkitURL;

else var Blob = (function (view) {

  "use strict";

  var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || view.MSBlobBuilder || (function(view) {

    var

        get_class = function(object) {

        return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];

      }

      , FakeBlobBuilder = function BlobBuilder() {

        this.data = [];

      }

      , FakeBlob = function Blob(data, type, encoding) {

        this.data = data;

        this.size = data.length;

        this.type = type;

        this.encoding = encoding;

      }

      , FBB_proto = FakeBlobBuilder.prototype

      , FB_proto = FakeBlob.prototype

      , FileReaderSync = view.FileReaderSync

      , FileException = function(type) {

        this.code = this[this.name = type];

      }

      , file_ex_codes = (

          "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "

        + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"

      ).split(" ")

      , file_ex_code = file_ex_codes.length

      , real_URL = view.URL || view.webkitURL || view

      , real_create_object_URL = real_URL.createObjectURL

      , real_revoke_object_URL = real_URL.revokeObjectURL

      , URL = real_URL

      , btoa = view.btoa

      , atob = view.atob

      , ArrayBuffer = view.ArrayBuffer

      , Uint8Array = view.Uint8Array

    ;

    FakeBlob.fake = FB_proto.fake = true;

    while (file_ex_code--) {

      FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;

    }

    if (!real_URL.createObjectURL) {

      URL = view.URL = {};

    }

    URL.createObjectURL = function(blob) {

      var

          type = blob.type

        , data_URI_header

      ;

      if (type === null) {

        type = "application/octet-stream";

      }

      if (blob instanceof FakeBlob) {

        data_URI_header = "data:" + type;

        if (blob.encoding === "base64") {

          return data_URI_header + ";base64," + blob.data;

        } else if (blob.encoding === "URI") {

          return data_URI_header + "," + decodeURIComponent(blob.data);

        } if (btoa) {

          return data_URI_header + ";base64," + btoa(blob.data);

        } else {

          return data_URI_header + "," + encodeURIComponent(blob.data);

        }

      } else if (real_create_object_URL) {

        return real_create_object_URL.call(real_URL, blob);

      }

    };

    URL.revokeObjectURL = function(object_URL) {

      if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {

        real_revoke_object_URL.call(real_URL, object_URL);

      }

    };

    FBB_proto.append = function(data/*, endings*/) {

      var bb = this.data;

      // decode data to a binary string

      if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {

        var

            str = ""

          , buf = new Uint8Array(data)

          , i = 0

          , buf_len = buf.length

        ;

        for (; i < buf_len; i++) {

          str += String.fromCharCode(buf[i]);

        }

        bb.push(str);

      } else if (get_class(data) === "Blob" || get_class(data) === "File") {

        if (FileReaderSync) {

          var fr = new FileReaderSync;

          bb.push(fr.readAsBinaryString(data));

        } else {

          // async FileReader won't work as BlobBuilder is sync

          throw new FileException("NOT_READABLE_ERR");

        }

      } else if (data instanceof FakeBlob) {

        if (data.encoding === "base64" && atob) {

          bb.push(atob(data.data));

        } else if (data.encoding === "URI") {

          bb.push(decodeURIComponent(data.data));

        } else if (data.encoding === "raw") {

          bb.push(data.data);

        }

      } else {

        if (typeof data !== "string") {

          data += ""; // convert unsupported types to strings

        }

        // decode UTF-16 to binary string

        bb.push(unescape(encodeURIComponent(data)));

      }

    };

    FBB_proto.getBlob = function(type) {

      if (!arguments.length) {

        type = null;

      }

      return new FakeBlob(this.data.join(""), type, "raw");

    };

    FBB_proto.toString = function() {

      return "[object BlobBuilder]";

    };

    FB_proto.slice = function(start, end, type) {

      var args = arguments.length;

      if (args < 3) {

        type = null;

      }

      return new FakeBlob(

          this.data.slice(start, args > 1 ? end : this.data.length)

        , type

        , this.encoding

      );

    };

    FB_proto.toString = function() {

      return "[object Blob]";

    };

    return FakeBlobBuilder;

  }(view));

  return function Blob(blobParts, options) {

    var type = options ? (options.type || "") : "";

    var builder = new BlobBuilder();

    if (blobParts) {

      for (var i = 0, len = blobParts.length; i < len; i++) {

        builder.append(blobParts[i]);

      }

    }

    return builder.getBlob(type);

  };

}(self));

/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */

var saveAs=saveAs||(navigator.msSaveOrOpenBlob&&navigator.msSaveOrOpenBlob.bind(navigator))||(function(h){"use strict";var r=h.document,l=function(){return h.URL||h.webkitURL||h},e=h.URL||h.webkitURL||h,n=r.createElementNS("http://www.w3.org/1999/xhtml","a"),g=!h.externalHost&&"download" in n,j=function(t){var s=r.createEvent("MouseEvents");s.initMouseEvent("click",true,false,h,0,0,0,0,0,false,false,false,false,0,null);t.dispatchEvent(s)},o=h.webkitRequestFileSystem,p=h.requestFileSystem||o||h.mozRequestFileSystem,m=function(s){(h.setImmediate||h.setTimeout)(function(){throw s},0)},c="application/octet-stream",k=0,b=[],i=function(){var t=b.length;while(t--){var s=b[t];if(typeof s==="string"){e.revokeObjectURL(s)}else{s.remove()}}b.length=0},q=function(t,s,w){s=[].concat(s);var v=s.length;while(v--){var x=t["on"+s[v]];if(typeof x==="function"){try{x.call(t,w||t)}catch(u){m(u)}}}},f=function(t,u){var v=this,B=t.type,E=false,x,w,s=function(){var F=l().createObjectURL(t);b.push(F);return F},A=function(){q(v,"writestart progress write writeend".split(" "))},D=function(){if(E||!x){x=s(t)}if(w){w.location.href=x}else{window.open(x,"_blank")}v.readyState=v.DONE;A()},z=function(F){return function(){if(v.readyState!==v.DONE){return F.apply(this,arguments)}}},y={create:true,exclusive:false},C;v.readyState=v.INIT;if(!u){u="download"}if(g){x=s(t);n.href=x;n.download=u;j(n);v.readyState=v.DONE;A();return}if(h.chrome&&B&&B!==c){C=t.slice||t.webkitSlice;t=C.call(t,0,t.size,c);E=true}if(o&&u!=="download"){u+=".download"}if(B===c||o){w=h}if(!p){D();return}k+=t.size;p(h.TEMPORARY,k,z(function(F){F.root.getDirectory("saved",y,z(function(G){var H=function(){G.getFile(u,y,z(function(I){I.createWriter(z(function(J){J.onwriteend=function(K){w.location.href=I.toURL();b.push(I);v.readyState=v.DONE;q(v,"writeend",K)};J.onerror=function(){var K=J.error;if(K.code!==K.ABORT_ERR){D()}};"writestart progress write abort".split(" ").forEach(function(K){J["on"+K]=v["on"+K]});J.write(t);v.abort=function(){J.abort();v.readyState=v.DONE};v.readyState=v.WRITING}),D)}),D)};G.getFile(u,{create:false},z(function(I){I.remove();H()}),z(function(I){if(I.code===I.NOT_FOUND_ERR){H()}else{D()}}))}),D)}),D)},d=f.prototype,a=function(s,t){return new f(s,t)};d.abort=function(){var s=this;s.readyState=s.DONE;q(s,"abort")};d.readyState=d.INIT=0;d.WRITING=1;d.DONE=2;d.error=d.onwritestart=d.onprogress=d.onwrite=d.onabort=d.onerror=d.onwriteend=null;h.addEventListener("unload",i,false);return a}(self));