8 lines
19 KiB
JavaScript
8 lines
19 KiB
JavaScript
define(["./base64","./ieee754","./isArray"],(function(t,r,e){"use strict";
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/*!
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* The buffer module from node.js, for the browser.
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*
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* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
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* @license MIT
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*/function n(){return o.TYPED_ARRAY_SUPPORT?2147483647:1073741823}function i(t,r){if(n()<r)throw new RangeError("Invalid typed array length");return o.TYPED_ARRAY_SUPPORT?(t=new Uint8Array(r)).__proto__=o.prototype:(null===t&&(t=new o(r)),t.length=r),t}function o(t,r,e){if(!(o.TYPED_ARRAY_SUPPORT||this instanceof o))return new o(t,r,e);if("number"==typeof t){if("string"==typeof r)throw new Error("If encoding is specified then the first argument must be a string");return s(this,t)}return u(this,t,r,e)}function u(t,r,n,u){if("number"==typeof r)throw new TypeError('"value" argument must not be a number');return"undefined"!=typeof ArrayBuffer&&r instanceof ArrayBuffer?function(t,r,e,n){if(r.byteLength,e<0||r.byteLength<e)throw new RangeError("'offset' is out of bounds");if(r.byteLength<e+(n||0))throw new RangeError("'length' is out of bounds");r=void 0===e&&void 0===n?new Uint8Array(r):void 0===n?new Uint8Array(r,e):new Uint8Array(r,e,n);o.TYPED_ARRAY_SUPPORT?(t=r).__proto__=o.prototype:t=h(t,r);return t}(t,r,n,u):"string"==typeof r?function(t,r,e){"string"==typeof e&&""!==e||(e="utf8");if(!o.isEncoding(e))throw new TypeError('"encoding" must be a valid string encoding');var n=0|l(r,e),u=(t=i(t,n)).write(r,e);u!==n&&(t=t.slice(0,u));return t}(t,r,n):function(t,r){if(c(r)){var n=0|a(r.length);return 0===(t=i(t,n)).length||r.copy(t,0,0,n),t}if(r){if("undefined"!=typeof ArrayBuffer&&r.buffer instanceof ArrayBuffer||"length"in r)return"number"!=typeof r.length||(o=r.length)!=o?i(t,0):h(t,r);if("Buffer"===r.type&&e(r.data))return h(t,r.data)}var o;throw new TypeError("First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.")}(t,r)}function f(t){if("number"!=typeof t)throw new TypeError('"size" argument must be a number');if(t<0)throw new RangeError('"size" argument must not be negative')}function s(t,r){if(f(r),t=i(t,r<0?0:0|a(r)),!o.TYPED_ARRAY_SUPPORT)for(var e=0;e<r;++e)t[e]=0;return t}function h(t,r){var e=r.length<0?0:0|a(r.length);t=i(t,e);for(var n=0;n<e;n+=1)t[n]=255&r[n];return t}function a(t){if(t>=n())throw new RangeError("Attempt to allocate Buffer larger than maximum size: 0x"+n().toString(16)+" bytes");return 0|t}function c(t){return!(null==t||!t._isBuffer)}function l(t,r){if(c(t))return t.length;if("undefined"!=typeof ArrayBuffer&&"function"==typeof ArrayBuffer.isView&&(ArrayBuffer.isView(t)||t instanceof ArrayBuffer))return t.byteLength;"string"!=typeof t&&(t=""+t);var e=t.length;if(0===e)return 0;for(var n=!1;;)switch(r){case"ascii":case"latin1":case"binary":return e;case"utf8":case"utf-8":case void 0:return z(t).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return 2*e;case"hex":return e>>>1;case"base64":return F(t).length;default:if(n)return z(t).length;r=(""+r).toLowerCase(),n=!0}}function p(t,r,e){var n=!1;if((void 0===r||r<0)&&(r=0),r>this.length)return"";if((void 0===e||e>this.length)&&(e=this.length),e<=0)return"";if((e>>>=0)<=(r>>>=0))return"";for(t||(t="utf8");;)switch(t){case"hex":return U(this,r,e);case"utf8":case"utf-8":return _(this,r,e);case"ascii":return T(this,r,e);case"latin1":case"binary":return B(this,r,e);case"base64":return m(this,r,e);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return S(this,r,e);default:if(n)throw new TypeError("Unknown encoding: "+t);t=(t+"").toLowerCase(),n=!0}}function g(t,r,e){var n=t[r];t[r]=t[e],t[e]=n}function y(t,r,e,n,i){if(0===t.length)return-1;if("string"==typeof e?(n=e,e=0):e>2147483647?e=2147483647:e<-2147483648&&(e=-2147483648),e=+e,isNaN(e)&&(e=i?0:t.length-1),e<0&&(e=t.length+e),e>=t.length){if(i)return-1;e=t.length-1}else if(e<0){if(!i)return-1;e=0}if("string"==typeof r&&(r=o.from(r,n)),c(r))return 0===r.length?-1:w(t,r,e,n,i);if("number"==typeof r)return r&=255,o.TYPED_ARRAY_SUPPORT&&"function"==typeof Uint8Array.prototype.indexOf?i?Uint8Array.prototype.indexOf.call(t,r,e):Uint8Array.prototype.lastIndexOf.call(t,r,e):w(t,[r],e,n,i);throw new TypeError("val must be string, number or Buffer")}function w(t,r,e,n,i){var o,u=1,f=t.length,s=r.length;if(void 0!==n&&("ucs2"===(n=String(n).toLowerCase())||"ucs-2"===n||"utf16le"===n||"utf-16le"===n)){if(t.length<2||r.length<2)return-1;u=2,f/=2,s/=2,e/=2}function h(t,r){return 1===u?t[r]:t.readUInt16BE(r*u)}if(i){var a=-1;for(o=e;o<f;o++)if(h(t,o)===h(r,-1===a?0:o-a)){if(-1===a&&(a=o),o-a+1===s)return a*u}else-1!==a&&(o-=o-a),a=-1}else for(e+s>f&&(e=f-s),o=e;o>=0;o--){for(var c=!0,l=0;l<s;l++)if(h(t,o+l)!==h(r,l)){c=!1;break}if(c)return o}return-1}function d(t,r,e,n){e=Number(e)||0;var i=t.length-e;n?(n=Number(n))>i&&(n=i):n=i;var o=r.length;if(o%2!=0)throw new TypeError("Invalid hex string");n>o/2&&(n=o/2);for(var u=0;u<n;++u){var f=parseInt(r.substr(2*u,2),16);if(isNaN(f))return u;t[e+u]=f}return u}function v(t,r,e,n){return N(z(r,t.length-e),t,e,n)}function E(t,r,e,n){return N(function(t){for(var r=[],e=0;e<t.length;++e)r.push(255&t.charCodeAt(e));return r}(r),t,e,n)}function R(t,r,e,n){return E(t,r,e,n)}function b(t,r,e,n){return N(F(r),t,e,n)}function A(t,r,e,n){return N(function(t,r){for(var e,n,i,o=[],u=0;u<t.length&&!((r-=2)<0);++u)n=(e=t.charCodeAt(u))>>8,i=e%256,o.push(i),o.push(n);return o}(r,t.length-e),t,e,n)}function m(r,e,n){return 0===e&&n===r.length?t.fromByteArray(r):t.fromByteArray(r.slice(e,n))}function _(t,r,e){e=Math.min(t.length,e);for(var n=[],i=r;i<e;){var o,u,f,s,h=t[i],a=null,c=h>239?4:h>223?3:h>191?2:1;if(i+c<=e)switch(c){case 1:h<128&&(a=h);break;case 2:128==(192&(o=t[i+1]))&&(s=(31&h)<<6|63&o)>127&&(a=s);break;case 3:o=t[i+1],u=t[i+2],128==(192&o)&&128==(192&u)&&(s=(15&h)<<12|(63&o)<<6|63&u)>2047&&(s<55296||s>57343)&&(a=s);break;case 4:o=t[i+1],u=t[i+2],f=t[i+3],128==(192&o)&&128==(192&u)&&128==(192&f)&&(s=(15&h)<<18|(63&o)<<12|(63&u)<<6|63&f)>65535&&s<1114112&&(a=s)}null===a?(a=65533,c=1):a>65535&&(a-=65536,n.push(a>>>10&1023|55296),a=56320|1023&a),n.push(a),i+=c}return function(t){var r=t.length;if(r<=P)return String.fromCharCode.apply(String,t);var e="",n=0;for(;n<r;)e+=String.fromCharCode.apply(String,t.slice(n,n+=P));return e}(n)}o.TYPED_ARRAY_SUPPORT=!0,o.poolSize=8192,o._augment=function(t){return t.__proto__=o.prototype,t},o.from=function(t,r,e){return u(null,t,r,e)},o.TYPED_ARRAY_SUPPORT&&(o.prototype.__proto__=Uint8Array.prototype,o.__proto__=Uint8Array),o.alloc=function(t,r,e){return function(t,r,e,n){return f(r),r<=0?i(t,r):void 0!==e?"string"==typeof n?i(t,r).fill(e,n):i(t,r).fill(e):i(t,r)}(null,t,r,e)},o.allocUnsafe=function(t){return s(null,t)},o.allocUnsafeSlow=function(t){return s(null,t)},o.isBuffer=function(t){return null!=t&&(!!t._isBuffer||j(t)||function(t){return"function"==typeof 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