base64-ascii85.js

var shorten=function(e,r){for(var t=r;t>0;t--)e.pop()},rstrip=function(e,r){for(var t=e.length;e[t-1]===r;)t--;return e.slice(0,t)},ascii85=this.ascii85=function(){var e={Ascii85CodecError:function(e){this.message=e}};e.Ascii85CodecError.prototype.toString=function(){return"Ascii85CodecError"+(this.message?": "+this.message:"")};var r=function(r,t){if(!r)throw new e.Ascii85CodecError(t)};return e.encode=function(e){r(!/[^\x00-\xFF]/.test(e),"Input contains out-of-range characters.");for(var t="\0\0\0\0".slice(e.length%4||4),n=[],o=0,a=(e+=t).length;o<a;o+=4){var s,c,i,h,u,l=(e.charCodeAt(o)<<24)+(e.charCodeAt(o+1)<<16)+(e.charCodeAt(o+2)<<8)+e.charCodeAt(o+3)>>>0;if(0!==l)s=(l=((l=((l=((l=(l-(u=l%85))/85)-(h=l%85))/85)-(i=l%85))/85)-(c=l%85))/85)%85,n.push(s+33,c+33,i+33,h+33,u+33);else n.push(122)}return shorten(n,t.length),"<~"+String.fromCharCode.apply(String,n)+"~>"},e.decode=function(e){r("<~"===e.slice(0,2)&&"~>"===e.slice(-2),"Invalid initial/final ascii85 characters"),e=e.slice(2,-2).replace(/\s/g,"").replace("z","!!!!!"),r(!/[^\x21-\x75]/.test(e),"Input contains out-of-range characters.");for(var t,n="uuuuu".slice(e.length%5||5),o=[],a=0,s=(e+=n).length;a<s;a+=5)t=52200625*(e.charCodeAt(a)-33)+614125*(e.charCodeAt(a+1)-33)+7225*(e.charCodeAt(a+2)-33)+85*(e.charCodeAt(a+3)-33)+(e.charCodeAt(a+4)-33),o.push(t>>24&255,t>>16&255,t>>8&255,255&t);return shorten(o,n.length),String.fromCharCode.apply(String,o)},e}(),base64Codec=function(e,r){if(64!=e.length)throw new Error("Alphabet must be 64 characters.");for(var t={},n={},o=0,a=e.length;o<a;o++)n[e[o]]=o;var s=new RegExp("[^"+e.replace(/[\.\^\$\*\+\?\{\[\]\\\|\(\)]/g,"\\$&")+"]");t.Base64CodecError=function(e){this.message=e},t.Base64CodecError.prototype.toString=function(){return"Base64CodecError"+(this.message?": "+this.message:"")};var c=function(e,r){if(!e)throw new t.Base64CodecError(r)};return t.encode=function(t,n){null==n&&(n=!0),c(!/[^\x00-\xFF]/.test(t),"Input contains out-of-range characters.");for(var o="\0\0\0".slice(t.length%3||3),a=[],s=0,i=(t+=o).length;s<i;s+=3){var h=(t.charCodeAt(s)<<16)+(t.charCodeAt(s+1)<<8)+t.charCodeAt(s+2);a.push(e[h>>18&63],e[h>>12&63],e[h>>6&63],e[63&h])}return output_padding=n&&void 0!==r?Array(5).join(r).slice(-o.length):"",shorten(a,o.length),a.join("")+output_padding},t.decode=function(t,o,a){a||(t=t.replace(/\s/g,"")),null!=r&&(c(!(o&&t.length%4),"Input length not divisible by 4."),t=rstrip(t,r)),c(!s.test(t),"Input contains out-of-range characters.");for(var i=Array(5-(t.length%4||4)).join(e[e.length-1]),h=[],u=0,l=(t+=i).length;u<l;u+=4)newchars=(n[t[u]]<<18)+(n[t[u+1]]<<12)+(n[t[u+2]]<<6)+n[t[u+3]],h.push(newchars>>16&255,newchars>>8&255,255&newchars);return shorten(h,i.length),String.fromCharCode.apply(String,h)},t},base64=this.base64=base64Codec("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/","="),base64_urlsafe=this.base64_urlsafe=base64Codec("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_","=");