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1 line
29 KiB
JavaScript
1 line
29 KiB
JavaScript
3 years ago
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!function(){"use strict";function e(e){return JSON.parse(JSON.stringify(e))}function t(e){for(var t=y(e);"ÿà"<=t[1].slice(0,2)&&t[1].slice(0,2)<="ÿï";)t=[t[0]].concat(t.slice(2));return t.join("")}function a(e){return s(">"+p("B",e.length),e)}function i(e){return s(">"+p("H",e.length),e)}function n(e){return s(">"+p("L",e.length),e)}function r(e,t,r){var o,l,m,y,c="",S="";if("Byte"==t)o=e.length,4>=o?S=a(e)+p("\x00",4-o):(S=s(">L",[r]),c=a(e));else if("Short"==t)o=e.length,2>=o?S=i(e)+p("\x00\x00",2-o):(S=s(">L",[r]),c=i(e));else if("Long"==t)o=e.length,1>=o?S=n(e):(S=s(">L",[r]),c=n(e));else if("Ascii"==t)l=e+"\x00",o=l.length,o>4?(S=s(">L",[r]),c=l):S=l+p("\x00",4-o);else if("Rational"==t){if("number"==typeof e[0])o=1,m=e[0],y=e[1],l=s(">L",[m])+s(">L",[y]);else{o=e.length,l="";for(var f=0;o>f;f++)m=e[f][0],y=e[f][1],l+=s(">L",[m])+s(">L",[y])}S=s(">L",[r]),c=l}else if("SRational"==t){if("number"==typeof e[0])o=1,m=e[0],y=e[1],l=s(">l",[m])+s(">l",[y]);else{o=e.length,l="";for(var f=0;o>f;f++)m=e[f][0],y=e[f][1],l+=s(">l",[m])+s(">l",[y])}S=s(">L",[r]),c=l}else"Undefined"==t&&(o=e.length,o>4?(S=s(">L",[r]),c=e):S=e+p("\x00",4-o));var h=s(">L",[o]);return[h,S,c]}function o(e,t,a){var i,n=8,o=Object.keys(e).length,l=s(">H",[o]);i=["0th","1st"].indexOf(t)>-1?2+12*o+4:2+12*o;var m,p="",y="";for(var m in e)if("string"==typeof m&&(m=parseInt(m)),!("0th"==t&&[34665,34853].indexOf(m)>-1||"Exif"==t&&40965==m||"1st"==t&&[513,514].indexOf(m)>-1)){var c=e[m],S=s(">H",[m]),f=u[t][m].type,h=s(">H",[g[f]]);"number"==typeof c&&(c=[c]);var d=n+i+a+y.length,P=r(c,f,d),C=P[0],R=P[1],L=P[2];p+=S+h+C+R,y+=L}return[l+p,y]}function l(e){var t,a;if("ÿØ"==e.slice(0,2))t=y(e),a=c(t),a?this.tiftag=a.slice(10):this.tiftag=null;else if(["II","MM"].indexOf(e.slice(0,2))>-1)this.tiftag=e;else{if("Exif"!=e.slice(0,4))throw"Given file is neither JPEG nor TIFF.";this.tiftag=e.slice(6)}}function s(e,t){if(!(t instanceof Array))throw"'pack' error. Got invalid type argument.";if(e.length-1!=t.length)throw"'pack' error. "+(e.length-1)+" marks, "+t.length+" elements.";var a;if("<"==e[0])a=!0;else{if(">"!=e[0])throw"";a=!1}for(var i="",n=1,r=null,o=null,l=null;o=e[n];){if("b"==o.toLowerCase()){if(r=t[n-1],"b"==o&&0>r&&(r+=256),r>255||0>r)throw"'pack' error.";l=String.fromCharCode(r)}else if("H"==o){if(r=t[n-1],r>65535||0>r)throw"'pack' error.";l=String.fromCharCode(Math.floor(r%65536/256))+String.fromCharCode(r%256),a&&(l=l.split("").reverse().join(""))}else{if("l"!=o.toLowerCase())throw"'pack' error.";if(r=t[n-1],"l"==o&&0>r&&(r+=4294967296),r>4294967295||0>r)throw"'pack' error.";l=String.fromCharCode(Math.floor(r/16777216))+String.fromCharCode(Math.floor(r%16777216/65536))+String.fromCharCode(Math.floor(r%65536/256))+String.fromCharCode(r%256),a&&(l=l.split("").reverse().join(""))}i+=l,n+=1}return i}function m(e,t){if("string"!=typeof t)throw"'unpack' error. Got invalid type argument.";for(var a=0,i=1;i<e.length;i++)if("b"==e[i].toLowerCase())a+=1;else if("h"==e[i].toLowerCase())a+=2;else{if("l"!=e[i].toLowerCase())throw"'unpack' error. Got invalid mark.";a+=4}if(a!=t.length)throw"'unpack' error. Mismatch between symbol and string length. "+a+":"+t.length;var n;if("<"==e[0])n=!0;else{if(">"!=e[0])throw"'unpack' error.";n=!1}for(var r=[],o=0,l=1,s=null,m=null,p=null,y="";m=e[l];){if("b"==m.toLowerCase())p=1,y=t.slice(o,o+p),s=y.charCodeAt(0),"b"==m&&s>=128&&(s-=256);else if("H"==m)p=2,y=t.slice(o,o+p),n&&(y=y.split("").reverse().join("")),s=256*y.charCodeAt(0)+y.charCodeAt(1);else{if("l"!=m.toLowerCase())throw"'unpack' error. "+m;p=4,y=t.slice(o,o+p),n&&(y=y.split("").reverse().join("")),s=16777216*y.charCodeAt(0)+65536*y.charCodeAt(1)+256*y.charCodeAt(2)+y.charCodeAt(3),"l"==m&&s>=2147483648&&(s-=4294967296)}r.push(s),o+=p,l+=1}return r}function p(e,t){for(var a="",i=0;t>i;i++)a+=e;return a}function y(e){if("ÿØ"!=e.slice(0,2))throw"Given data isn't JPEG.";for(var t=2,a=["ÿØ"];;){if("ÿÚ"==e.slice(t,t+2)){a.push(e.slice(t));break}var i=m(">H",e.slice(t+2,t+4))[0],n=t+i+2;if(a.push(e.slice(t,n)),t=n,t>=e.length)throw"Wrong JPEG data."}return a}fu
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