ebml/lib/ebml.esm.min.js

ebml parser

var global$1="undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{},lookup=[],revLookup=[],Arr="undefined"!=typeof Uint8Array?Uint8Array:Array,inited=!1;function init(){inited=!0;for(var e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",t=0,r=e.length;t<r;++t)lookup[t]=e[t],revLookup[e.charCodeAt(t)]=t;revLookup["-".charCodeAt(0)]=62,revLookup["_".charCodeAt(0)]=63}function toByteArray(e){var t,r,n,i,o,a;inited||init();var s=e.length;if(s%4>0)throw new Error("Invalid string. Length must be a multiple of 4");o="="===e[s-2]?2:"="===e[s-1]?1:0,a=new Arr(3*s/4-o),n=o>0?s-4:s;var l=0;for(t=0,r=0;t<n;t+=4,r+=3)i=revLookup[e.charCodeAt(t)]<<18|revLookup[e.charCodeAt(t+1)]<<12|revLookup[e.charCodeAt(t+2)]<<6|revLookup[e.charCodeAt(t+3)],a[l++]=i>>16&255,a[l++]=i>>8&255,a[l++]=255&i;return 2===o?(i=revLookup[e.charCodeAt(t)]<<2|revLookup[e.charCodeAt(t+1)]>>4,a[l++]=255&i):1===o&&(i=revLookup[e.charCodeAt(t)]<<10|revLookup[e.charCodeAt(t+1)]<<4|revLookup[e.charCodeAt(t+2)]>>2,a[l++]=i>>8&255,a[l++]=255&i),a}function tripletToBase64(e){return lookup[e>>18&63]+lookup[e>>12&63]+lookup[e>>6&63]+lookup[63&e]}function encodeChunk(e,t,r){for(var n,i=[],o=t;o<r;o+=3)n=(e[o]<<16)+(e[o+1]<<8)+e[o+2],i.push(tripletToBase64(n));return i.join("")}function fromByteArray(e){var t;inited||init();for(var r=e.length,n=r%3,i="",o=[],a=0,s=r-n;a<s;a+=16383)o.push(encodeChunk(e,a,a+16383>s?s:a+16383));return 1===n?(t=e[r-1],i+=lookup[t>>2],i+=lookup[t<<4&63],i+="=="):2===n&&(t=(e[r-2]<<8)+e[r-1],i+=lookup[t>>10],i+=lookup[t>>4&63],i+=lookup[t<<2&63],i+="="),o.push(i),o.join("")}function read(e,t,r,n,i){var o,a,s=8*i-n-1,l=(1<<s)-1,u=l>>1,c=-7,f=r?i-1:0,h=r?-1:1,d=e[t+f];for(f+=h,o=d&(1<<-c)-1,d>>=-c,c+=s;c>0;o=256*o+e[t+f],f+=h,c-=8);for(a=o&(1<<-c)-1,o>>=-c,c+=n;c>0;a=256*a+e[t+f],f+=h,c-=8);if(0===o)o=1-u;else{if(o===l)return a?NaN:1/0*(d?-1:1);a+=Math.pow(2,n),o-=u}return(d?-1:1)*a*Math.pow(2,o-n)}function write(e,t,r,n,i,o){var a,s,l,u=8*o-i-1,c=(1<<u)-1,f=c>>1,h=23===i?Math.pow(2,-24)-Math.pow(2,-77):0,d=n?0:o-1,p=n?1:-1,m=t<0||0===t&&1/t<0?1:0;for(t=Math.abs(t),isNaN(t)||t===1/0?(s=isNaN(t)?1:0,a=c):(a=Math.floor(Math.log(t)/Math.LN2),t*(l=Math.pow(2,-a))<1&&(a--,l*=2),(t+=a+f>=1?h/l:h*Math.pow(2,1-f))*l>=2&&(a++,l/=2),a+f>=c?(s=0,a=c):a+f>=1?(s=(t*l-1)*Math.pow(2,i),a+=f):(s=t*Math.pow(2,f-1)*Math.pow(2,i),a=0));i>=8;e[r+d]=255&s,d+=p,s/=256,i-=8);for(a=a<<i|s,u+=i;u>0;e[r+d]=255&a,d+=p,a/=256,u-=8);e[r+d-p]|=128*m}var toString={}.toString,isArray=Array.isArray||function(e){return"[object Array]"==toString.call(e)},INSPECT_MAX_BYTES=50;function kMaxLength(){return Buffer.TYPED_ARRAY_SUPPORT?2147483647:1073741823}function createBuffer(e,t){if(kMaxLength()<t)throw new RangeError("Invalid typed array length");return Buffer.TYPED_ARRAY_SUPPORT?(e=new Uint8Array(t)).__proto__=Buffer.prototype:(null===e&&(e=new Buffer(t)),e.length=t),e}function Buffer(e,t,r){if(!(Buffer.TYPED_ARRAY_SUPPORT||this instanceof Buffer))return new Buffer(e,t,r);if("number"==typeof e){if("string"==typeof t)throw new Error("If encoding is specified then the first argument must be a string");return allocUnsafe(this,e)}return from(this,e,t,r)}function from(e,t,r,n){if("number"==typeof t)throw new TypeError('"value" argument must not be a number');return"undefined"!=typeof ArrayBuffer&&t instanceof ArrayBuffer?fromArrayBuffer(e,t,r,n):"string"==typeof t?fromString(e,t,r):fromObject(e,t)}function assertSize(e){if("number"!=typeof e)throw new TypeError('"size" argument must be a number');if(e<0)throw new RangeError('"size" argument must not be negative')}function alloc(e,t,r,n){return assertSize(t),t<=0?createBuffer(e,t):void 0!==r?"string"==typeof n?createBuffer(e,t).fill(r,n):createBuffer(e,t).fill(r):createBuffer(e,t)}function allocUnsafe(e,t){if(assertSize(t),e=createBuffer(e,t<0?0:0|checked(t)),!Buffer.TYPED_ARRAY_SUPPORT)for(var r=0;r<t;++r)e[r]=0;return e}function fromString(e,t,r){if("string"==typeof r&&""!==r||(r="utf8"),!Buffer.isEncoding(r))throw new TypeError('"encoding" must be a valid string encoding');var n=0|byteLength(t,r),i=(e=createBuffer(e,n)).write(t,r);return i!==n&&(e=e.slice(0,i)),e}function fromArrayLike(e,t){var r=t.length<0?0:0|checked(t.length);e=createBuffer(e,r);for(var n=0;n<r;n+=1)e[n]=255&t[n];return e}function fromArrayBuffer(e,t,r,n){if(t.byteLength,r<0||t.byteLength<r)throw new RangeError("'offset' is out of bounds");if(t.byteLength<r+(n||0))throw new RangeError("'length' is out of bounds");return t=void 0===r&&void 0===n?new Uint8Array(t):void 0===n?new Uint8Array(t,r):new Uint8Array(t,r,n),Buffer.TYPED_ARRAY_SUPPORT?(e=t).__proto__=Buffer.prototype:e=fromArrayLike(e,t),e}function fromObject(e,t){if(internalIsBuffer(t)){var r=0|checked(t.length);return 0===(e=createBuffer(e,r)).length?e:(t.copy(e,0,0,r),e)}if(t){if("undefined"!=typeof ArrayBuffer&&t.buffer instanceof ArrayBuffer||"length"in t)return"number"!=typeof t.length||isnan(t.length)?createBuffer(e,0):fromArrayLike(e,t);if("Buffer"===t.type&&isArray(t.data))return fromArrayLike(e,t.data)}throw new TypeError("First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.")}function checked(e){if(e>=kMaxLength())throw new RangeError("Attempt to allocate Buffer larger than maximum size: 0x"+kMaxLength().toString(16)+" bytes");return 0|e}function internalIsBuffer(e){return!(null==e||!e._isBuffer)}function byteLength(e,t){if(internalIsBuffer(e))return e.length;if("undefined"!=typeof ArrayBuffer&&"function"==typeof ArrayBuffer.isView&&(ArrayBuffer.isView(e)||e instanceof ArrayBuffer))return e.byteLength;"string"!=typeof e&&(e=""+e);var r=e.length;if(0===r)return 0;for(var n=!1;;)switch(t){case"ascii":case"latin1":case"binary":return r;case"utf8":case"utf-8":case void 0:return utf8ToBytes(e).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return 2*r;case"hex":return r>>>1;case"base64":return base64ToBytes(e).length;default:if(n)return utf8ToBytes(e).length;t=(""+t).toLowerCase(),n=!0}}function slowToString(e,t,r){var n=!1;if((void 0===t||t<0)&&(t=0),t>this.length)return"";if((void 0===r||r>this.length)&&(r=this.length),r<=0)return"";if((r>>>=0)<=(t>>>=0))return"";for(e||(e="utf8");;)switch(e){case"hex":return hexSlice(this,t,r);case"utf8":case"utf-8":return utf8Slice(this,t,r);case"ascii":return asciiSlice(this,t,r);case"latin1":case"binary":return latin1Slice(this,t,r);case"base64":return base64Slice(this,t,r);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return utf16leSlice(this,t,r);default:if(n)throw new TypeError("Unknown encoding: "+e);e=(e+"").toLowerCase(),n=!0}}function swap(e,t,r){var n=e[t];e[t]=e[r],e[r]=n}function bidirectionalIndexOf(e,t,r,n,i){if(0===e.length)return-1;if("string"==typeof r?(n=r,r=0):r>2147483647?r=2147483647:r<-2147483648&&(r=-2147483648),r=+r,isNaN(r)&&(r=i?0:e.length-1),r<0&&(r=e.length+r),r>=e.length){if(i)return-1;r=e.length-1}else if(r<0){if(!i)return-1;r=0}if("string"==typeof t&&(t=Buffer.from(t,n)),internalIsBuffer(t))return 0===t.length?-1:arrayIndexOf(e,t,r,n,i);if("number"==typeof t)return t&=255,Buffer.TYPED_ARRAY_SUPPORT&&"function"==typeof Uint8Array.prototype.indexOf?i?Uint8Array.prototype.indexOf.call(e,t,r):Uint8Array.prototype.lastIndexOf.call(e,t,r):arrayIndexOf(e,[t],r,n,i);throw new TypeError("val must be string, number or Buffer")}function arrayIndexOf(e,t,r,n,i){var o,a=1,s=e.length,l=t.length;if(void 0!==n&&("ucs2"===(n=String(n).toLowerCase())||"ucs-2"===n||"utf16le"===n||"utf-16le"===n)){if(e.length<2||t.length<2)return-1;a=2,s/=2,l/=2,r/=2}function u(e,t){return 1===a?e[t]:e.readUInt16BE(t*a)}if(i){var c=-1;for(o=r;o<s;o++)if(u(e,o)===u(t,-1===c?0:o-c)){if(-1===c&&(c=o),o-c+1===l)return c*a}else-1!==c&&(o-=o-c),c=-1}else for(r+l>s&&(r=s-l),o=r;o>=0;o--){for(var f=!0,h=0;h<l;h++)if(u(e,o+h)!==u(t,h)){f=!1;break}if(f)return o}return-1}function hexWrite(e,t,r,n){r=Number(r)||0;var i=e.length-r;n?(n=Number(n))>i&&(n=i):n=i;var o=t.length;if(o%2!=0)throw new TypeError("Invalid hex string");n>o/2&&(n=o/2);for(var a=0;a<n;++a){var s=parseInt(t.substr(2*a,2),16);if(isNaN(s))return a;e[r+a]=s}return a}function utf8Write(e,t,r,n){return blitBuffer(utf8ToBytes(t,e.length-r),e,r,n)}function asciiWrite(e,t,r,n){return blitBuffer(asciiToBytes(t),e,r,n)}function latin1Write(e,t,r,n){return asciiWrite(e,t,r,n)}function base64Write(e,t,r,n){return blitBuffer(base64ToBytes(t),e,r,n)}function ucs2Write(e,t,r,n){return blitBuffer(utf16leToBytes(t,e.length-r),e,r,n)}function base64Slice(e,t,r){return 0===t&&r===e.length?fromByteArray(e):fromByteArray(e.slice(t,r))}function utf8Slice(e,t,r){r=Math.min(e.length,r);for(var n=[],i=t;i<r;){var o,a,s,l,u=e[i],c=null,f=u>239?4:u>223?3:u>191?2:1;if(i+f<=r)switch(f){case 1:u<128&&(c=u);break;case 2:128==(192&(o=e[i+1]))&&(l=(31&u)<<6|63&o)>127&&(c=l);break;case 3:o=e[i+1],a=e[i+2],128==(192&o)&&128==(192&a)&&(l=(15&u)<<12|(63&o)<<6|63&a)>2047&&(l<55296||l>57343)&&(c=l);break;case 4:o=e[i+1],a=e[i+2],s=e[i+3],128==(192&o)&&128==(192&a)&&128==(192&s)&&(l=(15&u)<<18|(63&o)<<12|(63&a)<<6|63&s)>65535&&l<1114112&&(c=l)}null===c?(c=65533,f=1):c>65535&&(c-=65536,n.push(c>>>10&1023|55296),c=56320|1023&c),n.push(c),i+=f}return decodeCodePointsArray(n)}Buffer.TYPED_ARRAY_SUPPORT=void 0===global$1.TYPED_ARRAY_SUPPORT||global$1.TYPED_ARRAY_SUPPORT,Buffer.poolSize=8192,Buffer._augment=function(e){return e.__proto__=Buffer.prototype,e},Buffer.from=function(e,t,r){return from(null,e,t,r)},Buffer.TYPED_ARRAY_SUPPORT&&(Buffer.prototype.__proto__=Uint8Array.prototype,Buffer.__proto__=Uint8Array),Buffer.alloc=function(e,t,r){return alloc(null,e,t,r)},Buffer.allocUnsafe=function(e){return allocUnsafe(null,e)},Buffer.allocUnsafeSlow=function(e){return allocUnsafe(null,e)},Buffer.isBuffer=isBuffer,Buffer.compare=function(e,t){if(!internalIsBuffer(e)||!internalIsBuffer(t))throw new TypeError("Arguments must be Buffers");if(e===t)return 0;for(var r=e.length,n=t.length,i=0,o=Math.min(r,n);i<o;++i)if(e[i]!==t[i]){r=e[i],n=t[i];break}return r<n?-1:n<r?1:0},Buffer.isEncoding=function(e){switch(String(e).toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"latin1":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return!0;default:return!1}},Buffer.concat=function(e,t){if(!isArray(e))throw new TypeError('"list" argument must be an Array of Buffers');if(0===e.length)return Buffer.alloc(0);var r;if(void 0===t)for(t=0,r=0;r<e.length;++r)t+=e[r].length;var n=Buffer.allocUnsafe(t),i=0;for(r=0;r<e.length;++r){var o=e[r];if(!internalIsBuffer(o))throw new TypeError('"list" argument must be an Array of Buffers');o.copy(n,i),i+=o.length}return n},Buffer.byteLength=byteLength,Buffer.prototype._isBuffer=!0,Buffer.prototype.swap16=function(){var e=this.length;if(e%2!=0)throw new RangeError("Buffer size must be a multiple of 16-bits");for(var t=0;t<e;t+=2)swap(this,t,t+1);return this},Buffer.prototype.swap32=function(){var e=this.length;if(e%4!=0)throw new RangeError("Buffer size must be a multiple of 32-bits");for(var t=0;t<e;t+=4)swap(this,t,t+3),swap(this,t+1,t+2);return this},Buffer.prototype.swap64=function(){var e=this.length;if(e%8!=0)throw new RangeError("Buffer size must be a multiple of 64-bits");for(var t=0;t<e;t+=8)swap(this,t,t+7),swap(this,t+1,t+6),swap(this,t+2,t+5),swap(this,t+3,t+4);return this},Buffer.prototype.toString=function(){var e=0|this.length;return 0===e?"":0===arguments.length?utf8Slice(this,0,e):slowToString.apply(this,arguments)},Buffer.prototype.equals=function(e){if(!internalIsBuffer(e))throw new TypeError("Argument must be a Buffer");return this===e||0===Buffer.compare(this,e)},Buffer.prototype.inspect=function(){var e="",t=INSPECT_MAX_BYTES;return this.length>0&&(e=this.toString("hex",0,t).match(/.{2}/g).join(" "),this.length>t&&(e+=" ... ")),"<Buffer "+e+">"},Buffer.prototype.compare=function(e,t,r,n,i){if(!internalIsBuffer(e))throw new TypeError("Argument must be a Buffer");if(void 0===t&&(t=0),void 0===r&&(r=e?e.length:0),void 0===n&&(n=0),void 0===i&&(i=this.length),t<0||r>e.length||n<0||i>this.length)throw new RangeError("out of range index");if(n>=i&&t>=r)return 0;if(n>=i)return-1;if(t>=r)return 1;if(this===e)return 0;for(var o=(i>>>=0)-(n>>>=0),a=(r>>>=0)-(t>>>=0),s=Math.min(o,a),l=this.slice(n,i),u=e.slice(t,r),c=0;c<s;++c)if(l[c]!==u[c]){o=l[c],a=u[c];break}return o<a?-1:a<o?1:0},Buffer.prototype.includes=function(e,t,r){return-1!==this.indexOf(e,t,r)},Buffer.prototype.indexOf=function(e,t,r){return bidirectionalIndexOf(this,e,t,r,!0)},Buffer.prototype.lastIndexOf=function(e,t,r){return bidirectionalIndexOf(this,e,t,r,!1)},Buffer.prototype.write=function(e,t,r,n){if(void 0===t)n="utf8",r=this.length,t=0;else if(void 0===r&&"string"==typeof t)n=t,r=this.length,t=0;else{if(!isFinite(t))throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported");t|=0,isFinite(r)?(r|=0,void 0===n&&(n="utf8")):(n=r,r=void 0)}var i=this.length-t;if((void 0===r||r>i)&&(r=i),e.length>0&&(r<0||t<0)||t>this.length)throw new RangeError("Attempt to write outside buffer bounds");n||(n="utf8");for(var o=!1;;)switch(n){case"hex":return hexWrite(this,e,t,r);case"utf8":case"utf-8":return utf8Write(this,e,t,r);case"ascii":return asciiWrite(this,e,t,r);case"latin1":case"binary":return latin1Write(this,e,t,r);case"base64":return base64Write(this,e,t,r);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return ucs2Write(this,e,t,r);default:if(o)throw new TypeError("Unknown encoding: "+n);n=(""+n).toLowerCase(),o=!0}},Buffer.prototype.toJSON=function(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};var MAX_ARGUMENTS_LENGTH=4096;function decodeCodePointsArray(e){var t=e.length;if(t<=MAX_ARGUMENTS_LENGTH)return String.fromCharCode.apply(String,e);for(var r="",n=0;n<t;)r+=String.fromCharCode.apply(String,e.slice(n,n+=MAX_ARGUMENTS_LENGTH));return r}function asciiSlice(e,t,r){var n="";r=Math.min(e.length,r);for(var i=t;i<r;++i)n+=String.fromCharCode(127&e[i]);return n}function latin1Slice(e,t,r){var n="";r=Math.min(e.length,r);for(var i=t;i<r;++i)n+=String.fromCharCode(e[i]);return n}function hexSlice(e,t,r){var n=e.length;(!t||t<0)&&(t=0),(!r||r<0||r>n)&&(r=n);for(var i="",o=t;o<r;++o)i+=toHex(e[o]);return i}function utf16leSlice(e,t,r){for(var n=e.slice(t,r),i="",o=0;o<n.length;o+=2)i+=String.fromCharCode(n[o]+256*n[o+1]);return i}function checkOffset(e,t,r){if(e%1!=0||e<0)throw new RangeError("offset is not uint");if(e+t>r)throw new RangeError("Trying to access beyond buffer length")}function checkInt(e,t,r,n,i,o){if(!internalIsBuffer(e))throw new TypeError('"buffer" argument must be a Buffer instance');if(t>i||t<o)throw new RangeError('"value" argument is out of bounds');if(r+n>e.length)throw new RangeError("Index out of range")}function objectWriteUInt16(e,t,r,n){t<0&&(t=65535+t+1);for(var i=0,o=Math.min(e.length-r,2);i<o;++i)e[r+i]=(t&255<<8*(n?i:1-i))>>>8*(n?i:1-i)}function objectWriteUInt32(e,t,r,n){t<0&&(t=4294967295+t+1);for(var i=0,o=Math.min(e.length-r,4);i<o;++i)e[r+i]=t>>>8*(n?i:3-i)&255}function checkIEEE754(e,t,r,n,i,o){if(r+n>e.length)throw new RangeError("Index out of range");if(r<0)throw new RangeError("Index out of range")}function writeFloat(e,t,r,n,i){return i||checkIEEE754(e,t,r,4,3.4028234663852886e38,-3.4028234663852886e38),write(e,t,r,n,23,4),r+4}function writeDouble(e,t,r,n,i){return i||checkIEEE754(e,t,r,8,1.7976931348623157e308,-1.7976931348623157e308),write(e,t,r,n,52,8),r+8}Buffer.prototype.slice=function(e,t){var r,n=this.length;if((e=~~e)<0?(e+=n)<0&&(e=0):e>n&&(e=n),(t=void 0===t?n:~~t)<0?(t+=n)<0&&(t=0):t>n&&(t=n),t<e&&(t=e),Buffer.TYPED_ARRAY_SUPPORT)(r=this.subarray(e,t)).__proto__=Buffer.prototype;else{var i=t-e;r=new Buffer(i,void 0);for(var 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