Blob.js

/* @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */
(function(d){d.URL=d.URL||d.webkitURL;if(d.Blob&&d.URL)try{new Blob;return}catch(b){}var p=d.BlobBuilder||d.WebKitBlobBuilder||d.MozBlobBuilder||function(b){var d=function(a){return Object.prototype.toString.call(a).match(/^\[object\s(.*)\]$/)[1]},e=function(){this.data=[]},g=function(a,c,b){this.data=a;this.size=a.length;this.type=c;this.encoding=b},f=e.prototype,h=g.prototype,q=b.FileReaderSync,r=function(a){this.code=this[this.name=a]},t="NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR".split(" "),
l=t.length,k=b.URL||b.webkitURL||b,u=k.createObjectURL,v=k.revokeObjectURL,m=k,w=b.btoa,x=b.atob,p=b.ArrayBuffer,n=b.Uint8Array,y=/^[\w-]+:\/*\[?[\w\.:-]+\]?(?::[0-9]+)?/;for(g.fake=h.fake=!0;l--;)r.prototype[t[l]]=l+1;k.createObjectURL||(m=b.URL=function(a){var c=document.createElementNS("http://www.w3.org/1999/xhtml","a");c.href=a;"origin"in c||("data:"===c.protocol.toLowerCase()?c.origin=null:(a=a.match(y),c.origin=a&&a[1]));return c});m.createObjectURL=function(a){var c=a.type;null===c&&(c="application/octet-stream");
if(a instanceof g)return c="data:"+c,"base64"===a.encoding?c+";base64,"+a.data:"URI"===a.encoding?c+","+decodeURIComponent(a.data):w?c+";base64,"+w(a.data):c+","+encodeURIComponent(a.data);if(u)return u.call(k,a)};m.revokeObjectURL=function(a){"data:"!==a.substring(0,5)&&v&&v.call(k,a)};f.append=function(a){var c=this.data;if(n&&(a instanceof p||a instanceof n)){var b="";a=new n(a);for(var e=0,f=a.length;e<f;e++)b+=String.fromCharCode(a[e]);c.push(b)}else if("Blob"===d(a)||"File"===d(a))if(q)b=new q,
c.push(b.readAsBinaryString(a));else throw new r("NOT_READABLE_ERR");else a instanceof g?"base64"===a.encoding&&x?c.push(x(a.data)):"URI"===a.encoding?c.push(decodeURIComponent(a.data)):"raw"===a.encoding&&c.push(a.data):("string"!==typeof a&&(a+=""),c.push(unescape(encodeURIComponent(a))))};f.getBlob=function(a){arguments.length||(a=null);return new g(this.data.join(""),a,"raw")};f.toString=function(){return"[object BlobBuilder]"};h.slice=function(a,c,b){var d=arguments.length;3>d&&(b=null);return new g(this.data.slice(a,
1<d?c:this.data.length),b,this.encoding)};h.toString=function(){return"[object Blob]"};h.close=function(){this.size=0;delete this.data};return e}(d);d.Blob=function(b,d){var e=d?d.type||"":"",g=new p;if(b)for(var f=0,h=b.length;f<h;f++)Uint8Array&&b[f]instanceof Uint8Array?g.append(b[f].buffer):g.append(b[f]);e=g.getBlob(e);!e.slice&&e.webkitSlice&&(e.slice=e.webkitSlice);return e};d.Blob.prototype=(Object.getPrototypeOf||function(b){return b.__proto__})(new d.Blob)})("undefined"!==typeof self&&self||
"undefined"!==typeof window&&window||this);