4204 lines
121 KiB
JavaScript
4204 lines
121 KiB
JavaScript
(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
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(function (process,Buffer){(function (){
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/* cfb.js (C) 2013-present SheetJS -- http://sheetjs.com */
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/* vim: set ts=2: */
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/*jshint eqnull:true */
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/*exported CFB */
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/*global module, require:false, process:false, Buffer:false, Uint8Array:false, Uint16Array:false */
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var Base64_map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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function Base64_encode(input) {
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var o = "";
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var c1 = 0, c2 = 0, c3 = 0, e1 = 0, e2 = 0, e3 = 0, e4 = 0;
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for (var i = 0; i < input.length; ) {
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c1 = input.charCodeAt(i++);
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e1 = (c1 >> 2);
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c2 = input.charCodeAt(i++);
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e2 = ((c1 & 3) << 4) | (c2 >> 4);
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c3 = input.charCodeAt(i++);
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e3 = ((c2 & 15) << 2) | (c3 >> 6);
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e4 = (c3 & 63);
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if (isNaN(c2)) e3 = e4 = 64;
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else if (isNaN(c3)) e4 = 64;
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o += Base64_map.charAt(e1) + Base64_map.charAt(e2) + Base64_map.charAt(e3) + Base64_map.charAt(e4);
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}
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return o;
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}
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function Base64_decode(input) {
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var o = "";
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var c1 = 0, c2 = 0, c3 = 0, e1 = 0, e2 = 0, e3 = 0, e4 = 0;
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input = input.replace(/[^\w\+\/\=]/g, "");
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for (var i = 0; i < input.length;) {
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e1 = Base64_map.indexOf(input.charAt(i++));
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e2 = Base64_map.indexOf(input.charAt(i++));
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c1 = (e1 << 2) | (e2 >> 4);
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o += String.fromCharCode(c1);
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e3 = Base64_map.indexOf(input.charAt(i++));
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c2 = ((e2 & 15) << 4) | (e3 >> 2);
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if (e3 !== 64) o += String.fromCharCode(c2);
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e4 = Base64_map.indexOf(input.charAt(i++));
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c3 = ((e3 & 3) << 6) | e4;
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if (e4 !== 64) o += String.fromCharCode(c3);
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}
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return o;
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}
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var has_buf = (function() { return typeof Buffer !== 'undefined' && typeof process !== 'undefined' && typeof process.versions !== 'undefined' && !!process.versions.node; })();
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var Buffer_from = (function() {
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if(typeof Buffer !== 'undefined') {
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var nbfs = !Buffer.from;
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if(!nbfs) try { Buffer.from("foo", "utf8"); } catch(e) { nbfs = true; }
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return nbfs ? function(buf, enc) { return (enc) ? new Buffer(buf, enc) : new Buffer(buf); } : Buffer.from.bind(Buffer);
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}
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return function() {};
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})();
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function new_raw_buf(len) {
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/* jshint -W056 */
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if(has_buf) {
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if(Buffer.alloc) return Buffer.alloc(len);
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var b = new Buffer(len); b.fill(0); return b;
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}
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return typeof Uint8Array != "undefined" ? new Uint8Array(len) : new Array(len);
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/* jshint +W056 */
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}
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function new_unsafe_buf(len) {
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/* jshint -W056 */
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if(has_buf) return Buffer.allocUnsafe ? Buffer.allocUnsafe(len) : new Buffer(len);
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return typeof Uint8Array != "undefined" ? new Uint8Array(len) : new Array(len);
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/* jshint +W056 */
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}
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var s2a = function s2a(s) {
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if(has_buf)
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return Buffer_from(s, "binary");
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return s.split("").map(function(x){ return x.charCodeAt(0) & 0xff; });
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};
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var chr0 = /\u0000/g, chr1 = /[\u0001-\u0006]/g;
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var __toBuffer = function(bufs) { var x = []; for(var i = 0; i < bufs[0].length; ++i) { x.push.apply(x, bufs[0][i]); } return x; };
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var ___toBuffer = __toBuffer;
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var __utf16le = function(b,s,e) { var ss=[]; for(var i=s; i<e; i+=2) ss.push(String.fromCharCode(__readUInt16LE(b,i))); return ss.join("").replace(chr0,''); };
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var ___utf16le = __utf16le;
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var __hexlify = function(b,s,l) { var ss=[]; for(var i=s; i<s+l; ++i) ss.push(("0" + b[i].toString(16)).slice(-2)); return ss.join(""); };
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var ___hexlify = __hexlify;
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var __bconcat = function(bufs) {
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if(Array.isArray(bufs[0])) return [].concat.apply([], bufs);
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var maxlen = 0, i = 0;
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for(i = 0; i < bufs.length; ++i) maxlen += bufs[i].length;
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var o = new Uint8Array(maxlen);
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for(i = 0, maxlen = 0; i < bufs.length; maxlen += bufs[i].length, ++i) o.set(bufs[i], maxlen);
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return o;
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};
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var bconcat = __bconcat;
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if(has_buf) {
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__utf16le = function(b,s,e) {
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if(!Buffer.isBuffer(b)) return ___utf16le(b,s,e);
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return b.toString('utf16le',s,e).replace(chr0,'')/*.replace(chr1,'!')*/;
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};
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__hexlify = function(b,s,l) { return Buffer.isBuffer(b) ? b.toString('hex',s,s+l) : ___hexlify(b,s,l); };
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__toBuffer = function(bufs) { return (bufs[0].length > 0 && Buffer.isBuffer(bufs[0][0])) ? Buffer.concat((bufs[0])) : ___toBuffer(bufs);};
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s2a = function(s) { return Buffer_from(s, "binary"); };
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bconcat = function(bufs) { return Buffer.isBuffer(bufs[0]) ? Buffer.concat(bufs) : __bconcat(bufs); };
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}
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var __readUInt8 = function(b, idx) { return b[idx]; };
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var __readUInt16LE = function(b, idx) { return b[idx+1]*(1<<8)+b[idx]; };
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var __readInt16LE = function(b, idx) { var u = b[idx+1]*(1<<8)+b[idx]; return (u < 0x8000) ? u : (0xffff - u + 1) * -1; };
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var __readUInt32LE = function(b, idx) { return b[idx+3]*(1<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]; };
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var __readInt32LE = function(b, idx) { return (b[idx+3]<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]; };
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function ReadShift(size, t) {
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var oI, oS, type = 0;
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switch(size) {
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case 1: oI = __readUInt8(this, this.l); break;
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case 2: oI = (t !== 'i' ? __readUInt16LE : __readInt16LE)(this, this.l); break;
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case 4: oI = __readInt32LE(this, this.l); break;
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case 16: type = 2; oS = __hexlify(this, this.l, size);
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}
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this.l += size; if(type === 0) return oI; return oS;
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}
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var __writeUInt32LE = function(b, val, idx) { b[idx] = (val & 0xFF); b[idx+1] = ((val >>> 8) & 0xFF); b[idx+2] = ((val >>> 16) & 0xFF); b[idx+3] = ((val >>> 24) & 0xFF); };
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var __writeInt32LE = function(b, val, idx) { b[idx] = (val & 0xFF); b[idx+1] = ((val >> 8) & 0xFF); b[idx+2] = ((val >> 16) & 0xFF); b[idx+3] = ((val >> 24) & 0xFF); };
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function WriteShift(t, val, f) {
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var size = 0, i = 0;
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switch(f) {
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case "hex": for(; i < t; ++i) {
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this[this.l++] = parseInt(val.slice(2*i, 2*i+2), 16)||0;
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} return this;
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case "utf16le":
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var end = this.l + t;
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for(i = 0; i < Math.min(val.length, t); ++i) {
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var cc = val.charCodeAt(i);
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this[this.l++] = cc & 0xff;
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this[this.l++] = cc >> 8;
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}
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while(this.l < end) this[this.l++] = 0;
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return this;
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}
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switch(t) {
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case 1: size = 1; this[this.l] = val&0xFF; break;
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case 2: size = 2; this[this.l] = val&0xFF; val >>>= 8; this[this.l+1] = val&0xFF; break;
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case 4: size = 4; __writeUInt32LE(this, val, this.l); break;
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case -4: size = 4; __writeInt32LE(this, val, this.l); break;
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}
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this.l += size; return this;
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}
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function CheckField(hexstr, fld) {
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var m = __hexlify(this,this.l,hexstr.length>>1);
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if(m !== hexstr) throw new Error(fld + 'Expected ' + hexstr + ' saw ' + m);
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this.l += hexstr.length>>1;
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}
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function prep_blob(blob, pos) {
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blob.l = pos;
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blob.read_shift = ReadShift;
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blob.chk = CheckField;
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blob.write_shift = WriteShift;
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}
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function new_buf(sz) {
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var o = (new_raw_buf(sz));
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prep_blob(o, 0);
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return o;
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}
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/*! crc32.js (C) 2014-present SheetJS -- http://sheetjs.com */
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/* vim: set ts=2: */
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/*exported CRC32 */
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var CRC32 = (function() {
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var CRC32 = {};
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CRC32.version = '1.2.1';
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/*global Int32Array */
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function signed_crc_table() {
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var c = 0, table = new Array(256);
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for(var n =0; n != 256; ++n){
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c = n;
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
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table[n] = c;
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}
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return typeof Int32Array !== 'undefined' ? new Int32Array(table) : table;
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}
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var T0 = signed_crc_table();
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function slice_by_16_tables(T) {
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var c = 0, v = 0, n = 0, table = typeof Int32Array !== 'undefined' ? new Int32Array(4096) : new Array(4096) ;
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for(n = 0; n != 256; ++n) table[n] = T[n];
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for(n = 0; n != 256; ++n) {
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v = T[n];
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for(c = 256 + n; c < 4096; c += 256) v = table[c] = (v >>> 8) ^ T[v & 0xFF];
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}
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var out = [];
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for(n = 1; n != 16; ++n) out[n - 1] = typeof Int32Array !== 'undefined' ? table.subarray(n * 256, n * 256 + 256) : table.slice(n * 256, n * 256 + 256);
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return out;
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}
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var TT = slice_by_16_tables(T0);
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var T1 = TT[0], T2 = TT[1], T3 = TT[2], T4 = TT[3], T5 = TT[4];
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var T6 = TT[5], T7 = TT[6], T8 = TT[7], T9 = TT[8], Ta = TT[9];
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var Tb = TT[10], Tc = TT[11], Td = TT[12], Te = TT[13], Tf = TT[14];
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function crc32_bstr(bstr, seed) {
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var C = seed ^ -1;
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for(var i = 0, L = bstr.length; i < L;) C = (C>>>8) ^ T0[(C^bstr.charCodeAt(i++))&0xFF];
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return ~C;
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}
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function crc32_buf(B, seed) {
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var C = seed ^ -1, L = B.length - 15, i = 0;
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for(; i < L;) C =
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Tf[B[i++] ^ (C & 255)] ^
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Te[B[i++] ^ ((C >> 8) & 255)] ^
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Td[B[i++] ^ ((C >> 16) & 255)] ^
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Tc[B[i++] ^ (C >>> 24)] ^
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Tb[B[i++]] ^ Ta[B[i++]] ^ T9[B[i++]] ^ T8[B[i++]] ^
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T7[B[i++]] ^ T6[B[i++]] ^ T5[B[i++]] ^ T4[B[i++]] ^
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T3[B[i++]] ^ T2[B[i++]] ^ T1[B[i++]] ^ T0[B[i++]];
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L += 15;
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while(i < L) C = (C>>>8) ^ T0[(C^B[i++])&0xFF];
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return ~C;
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}
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function crc32_str(str, seed) {
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var C = seed ^ -1;
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for(var i = 0, L = str.length, c = 0, d = 0; i < L;) {
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c = str.charCodeAt(i++);
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if(c < 0x80) {
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C = (C>>>8) ^ T0[(C^c)&0xFF];
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} else if(c < 0x800) {
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C = (C>>>8) ^ T0[(C ^ (192|((c>>6)&31)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|(c&63)))&0xFF];
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} else if(c >= 0xD800 && c < 0xE000) {
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c = (c&1023)+64; d = str.charCodeAt(i++)&1023;
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C = (C>>>8) ^ T0[(C ^ (240|((c>>8)&7)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|((c>>2)&63)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|((d>>6)&15)|((c&3)<<4)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|(d&63)))&0xFF];
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} else {
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C = (C>>>8) ^ T0[(C ^ (224|((c>>12)&15)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|((c>>6)&63)))&0xFF];
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C = (C>>>8) ^ T0[(C ^ (128|(c&63)))&0xFF];
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}
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}
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return ~C;
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}
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CRC32.table = T0;
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CRC32.bstr = crc32_bstr;
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CRC32.buf = crc32_buf;
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CRC32.str = crc32_str;
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return CRC32;
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})();
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/* [MS-CFB] v20171201 */
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var CFB = (function _CFB(){
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var exports = {};
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exports.version = '1.2.2';
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/* [MS-CFB] 2.6.4 */
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function namecmp(l, r) {
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var L = l.split("/"), R = r.split("/");
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for(var i = 0, c = 0, Z = Math.min(L.length, R.length); i < Z; ++i) {
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if((c = L[i].length - R[i].length)) return c;
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if(L[i] != R[i]) return L[i] < R[i] ? -1 : 1;
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}
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return L.length - R.length;
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}
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function dirname(p) {
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if(p.charAt(p.length - 1) == "/") return (p.slice(0,-1).indexOf("/") === -1) ? p : dirname(p.slice(0, -1));
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var c = p.lastIndexOf("/");
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return (c === -1) ? p : p.slice(0, c+1);
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}
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function filename(p) {
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if(p.charAt(p.length - 1) == "/") return filename(p.slice(0, -1));
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var c = p.lastIndexOf("/");
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return (c === -1) ? p : p.slice(c+1);
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}
|
|
/* -------------------------------------------------------------------------- */
|
|
/* DOS Date format:
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high|YYYYYYYm.mmmddddd.HHHHHMMM.MMMSSSSS|low
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add 1980 to stored year
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stored second should be doubled
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*/
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|
|
/* write JS date to buf as a DOS date */
|
|
function write_dos_date(buf, date) {
|
|
if(typeof date === "string") date = new Date(date);
|
|
var hms = date.getHours();
|
|
hms = hms << 6 | date.getMinutes();
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|
hms = hms << 5 | (date.getSeconds()>>>1);
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|
buf.write_shift(2, hms);
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|
var ymd = (date.getFullYear() - 1980);
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|
ymd = ymd << 4 | (date.getMonth()+1);
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|
ymd = ymd << 5 | date.getDate();
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|
buf.write_shift(2, ymd);
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|
}
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|
|
|
/* read four bytes from buf and interpret as a DOS date */
|
|
function parse_dos_date(buf) {
|
|
var hms = buf.read_shift(2) & 0xFFFF;
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|
var ymd = buf.read_shift(2) & 0xFFFF;
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|
var val = new Date();
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|
var d = ymd & 0x1F; ymd >>>= 5;
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|
var m = ymd & 0x0F; ymd >>>= 4;
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|
val.setMilliseconds(0);
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|
val.setFullYear(ymd + 1980);
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|
val.setMonth(m-1);
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|
val.setDate(d);
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|
var S = hms & 0x1F; hms >>>= 5;
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|
var M = hms & 0x3F; hms >>>= 6;
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|
val.setHours(hms);
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|
val.setMinutes(M);
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|
val.setSeconds(S<<1);
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|
return val;
|
|
}
|
|
function parse_extra_field(blob) {
|
|
prep_blob(blob, 0);
|
|
var o = {};
|
|
var flags = 0;
|
|
while(blob.l <= blob.length - 4) {
|
|
var type = blob.read_shift(2);
|
|
var sz = blob.read_shift(2), tgt = blob.l + sz;
|
|
var p = {};
|
|
switch(type) {
|
|
/* UNIX-style Timestamps */
|
|
case 0x5455: {
|
|
flags = blob.read_shift(1);
|
|
if(flags & 1) p.mtime = blob.read_shift(4);
|
|
/* for some reason, CD flag corresponds to LFH */
|
|
if(sz > 5) {
|
|
if(flags & 2) p.atime = blob.read_shift(4);
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|
if(flags & 4) p.ctime = blob.read_shift(4);
|
|
}
|
|
if(p.mtime) p.mt = new Date(p.mtime*1000);
|
|
}
|
|
break;
|
|
}
|
|
blob.l = tgt;
|
|
o[type] = p;
|
|
}
|
|
return o;
|
|
}
|
|
var fs;
|
|
function get_fs() { return fs || (fs = require('fs')); }
|
|
function parse(file, options) {
|
|
if(file[0] == 0x50 && file[1] == 0x4b) return parse_zip(file, options);
|
|
if((file[0] | 0x20) == 0x6d && (file[1]|0x20) == 0x69) return parse_mad(file, options);
|
|
if(file.length < 512) throw new Error("CFB file size " + file.length + " < 512");
|
|
var mver = 3;
|
|
var ssz = 512;
|
|
var nmfs = 0; // number of mini FAT sectors
|
|
var difat_sec_cnt = 0;
|
|
var dir_start = 0;
|
|
var minifat_start = 0;
|
|
var difat_start = 0;
|
|
|
|
var fat_addrs = []; // locations of FAT sectors
|
|
|
|
/* [MS-CFB] 2.2 Compound File Header */
|
|
var blob = file.slice(0,512);
|
|
prep_blob(blob, 0);
|
|
|
|
/* major version */
|
|
var mv = check_get_mver(blob);
|
|
mver = mv[0];
|
|
switch(mver) {
|
|
case 3: ssz = 512; break; case 4: ssz = 4096; break;
|
|
case 0: if(mv[1] == 0) return parse_zip(file, options);
|
|
/* falls through */
|
|
default: throw new Error("Major Version: Expected 3 or 4 saw " + mver);
|
|
}
|
|
|
|
/* reprocess header */
|
|
if(ssz !== 512) { blob = file.slice(0,ssz); prep_blob(blob, 28 /* blob.l */); }
|
|
/* Save header for final object */
|
|
var header = file.slice(0,ssz);
|
|
|
|
check_shifts(blob, mver);
|
|
|
|
// Number of Directory Sectors
|
|
var dir_cnt = blob.read_shift(4, 'i');
|
|
if(mver === 3 && dir_cnt !== 0) throw new Error('# Directory Sectors: Expected 0 saw ' + dir_cnt);
|
|
|
|
// Number of FAT Sectors
|
|
blob.l += 4;
|
|
|
|
// First Directory Sector Location
|
|
dir_start = blob.read_shift(4, 'i');
|
|
|
|
// Transaction Signature
|
|
blob.l += 4;
|
|
|
|
// Mini Stream Cutoff Size
|
|
blob.chk('00100000', 'Mini Stream Cutoff Size: ');
|
|
|
|
// First Mini FAT Sector Location
|
|
minifat_start = blob.read_shift(4, 'i');
|
|
|
|
// Number of Mini FAT Sectors
|
|
nmfs = blob.read_shift(4, 'i');
|
|
|
|
// First DIFAT sector location
|
|
difat_start = blob.read_shift(4, 'i');
|
|
|
|
// Number of DIFAT Sectors
|
|
difat_sec_cnt = blob.read_shift(4, 'i');
|
|
|
|
// Grab FAT Sector Locations
|
|
for(var q = -1, j = 0; j < 109; ++j) { /* 109 = (512 - blob.l)>>>2; */
|
|
q = blob.read_shift(4, 'i');
|
|
if(q<0) break;
|
|
fat_addrs[j] = q;
|
|
}
|
|
|
|
/** Break the file up into sectors */
|
|
var sectors = sectorify(file, ssz);
|
|
|
|
sleuth_fat(difat_start, difat_sec_cnt, sectors, ssz, fat_addrs);
|
|
|
|
/** Chains */
|
|
var sector_list = make_sector_list(sectors, dir_start, fat_addrs, ssz);
|
|
|
|
sector_list[dir_start].name = "!Directory";
|
|
if(nmfs > 0 && minifat_start !== ENDOFCHAIN) sector_list[minifat_start].name = "!MiniFAT";
|
|
sector_list[fat_addrs[0]].name = "!FAT";
|
|
sector_list.fat_addrs = fat_addrs;
|
|
sector_list.ssz = ssz;
|
|
|
|
/* [MS-CFB] 2.6.1 Compound File Directory Entry */
|
|
var files = {}, Paths = [], FileIndex = [], FullPaths = [];
|
|
read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, FileIndex, minifat_start);
|
|
|
|
build_full_paths(FileIndex, FullPaths, Paths);
|
|
Paths.shift();
|
|
|
|
var o = {
|
|
FileIndex: FileIndex,
|
|
FullPaths: FullPaths
|
|
};
|
|
|
|
// $FlowIgnore
|
|
if(options && options.raw) o.raw = {header: header, sectors: sectors};
|
|
return o;
|
|
} // parse
|
|
|
|
/* [MS-CFB] 2.2 Compound File Header -- read up to major version */
|
|
function check_get_mver(blob) {
|
|
if(blob[blob.l] == 0x50 && blob[blob.l + 1] == 0x4b) return [0, 0];
|
|
// header signature 8
|
|
blob.chk(HEADER_SIGNATURE, 'Header Signature: ');
|
|
|
|
// clsid 16
|
|
//blob.chk(HEADER_CLSID, 'CLSID: ');
|
|
blob.l += 16;
|
|
|
|
// minor version 2
|
|
var mver = blob.read_shift(2, 'u');
|
|
|
|
return [blob.read_shift(2,'u'), mver];
|
|
}
|
|
function check_shifts(blob, mver) {
|
|
var shift = 0x09;
|
|
|
|
// Byte Order
|
|
//blob.chk('feff', 'Byte Order: '); // note: some writers put 0xffff
|
|
blob.l += 2;
|
|
|
|
// Sector Shift
|
|
switch((shift = blob.read_shift(2))) {
|
|
case 0x09: if(mver != 3) throw new Error('Sector Shift: Expected 9 saw ' + shift); break;
|
|
case 0x0c: if(mver != 4) throw new Error('Sector Shift: Expected 12 saw ' + shift); break;
|
|
default: throw new Error('Sector Shift: Expected 9 or 12 saw ' + shift);
|
|
}
|
|
|
|
// Mini Sector Shift
|
|
blob.chk('0600', 'Mini Sector Shift: ');
|
|
|
|
// Reserved
|
|
blob.chk('000000000000', 'Reserved: ');
|
|
}
|
|
|
|
/** Break the file up into sectors */
|
|
function sectorify(file, ssz) {
|
|
var nsectors = Math.ceil(file.length/ssz)-1;
|
|
var sectors = [];
|
|
for(var i=1; i < nsectors; ++i) sectors[i-1] = file.slice(i*ssz,(i+1)*ssz);
|
|
sectors[nsectors-1] = file.slice(nsectors*ssz);
|
|
return sectors;
|
|
}
|
|
|
|
/* [MS-CFB] 2.6.4 Red-Black Tree */
|
|
function build_full_paths(FI, FP, Paths) {
|
|
var i = 0, L = 0, R = 0, C = 0, j = 0, pl = Paths.length;
|
|
var dad = [], q = [];
|
|
|
|
for(; i < pl; ++i) { dad[i]=q[i]=i; FP[i]=Paths[i]; }
|
|
|
|
for(; j < q.length; ++j) {
|
|
i = q[j];
|
|
L = FI[i].L; R = FI[i].R; C = FI[i].C;
|
|
if(dad[i] === i) {
|
|
if(L !== -1 /*NOSTREAM*/ && dad[L] !== L) dad[i] = dad[L];
|
|
if(R !== -1 && dad[R] !== R) dad[i] = dad[R];
|
|
}
|
|
if(C !== -1 /*NOSTREAM*/) dad[C] = i;
|
|
if(L !== -1 && i != dad[i]) { dad[L] = dad[i]; if(q.lastIndexOf(L) < j) q.push(L); }
|
|
if(R !== -1 && i != dad[i]) { dad[R] = dad[i]; if(q.lastIndexOf(R) < j) q.push(R); }
|
|
}
|
|
for(i=1; i < pl; ++i) if(dad[i] === i) {
|
|
if(R !== -1 /*NOSTREAM*/ && dad[R] !== R) dad[i] = dad[R];
|
|
else if(L !== -1 && dad[L] !== L) dad[i] = dad[L];
|
|
}
|
|
|
|
for(i=1; i < pl; ++i) {
|
|
if(FI[i].type === 0 /* unknown */) continue;
|
|
j = i;
|
|
if(j != dad[j]) do {
|
|
j = dad[j];
|
|
FP[i] = FP[j] + "/" + FP[i];
|
|
} while (j !== 0 && -1 !== dad[j] && j != dad[j]);
|
|
dad[i] = -1;
|
|
}
|
|
|
|
FP[0] += "/";
|
|
for(i=1; i < pl; ++i) {
|
|
if(FI[i].type !== 2 /* stream */) FP[i] += "/";
|
|
}
|
|
}
|
|
|
|
function get_mfat_entry(entry, payload, mini) {
|
|
var start = entry.start, size = entry.size;
|
|
//return (payload.slice(start*MSSZ, start*MSSZ + size));
|
|
var o = [];
|
|
var idx = start;
|
|
while(mini && size > 0 && idx >= 0) {
|
|
o.push(payload.slice(idx * MSSZ, idx * MSSZ + MSSZ));
|
|
size -= MSSZ;
|
|
idx = __readInt32LE(mini, idx * 4);
|
|
}
|
|
if(o.length === 0) return (new_buf(0));
|
|
return (bconcat(o).slice(0, entry.size));
|
|
}
|
|
|
|
/** Chase down the rest of the DIFAT chain to build a comprehensive list
|
|
DIFAT chains by storing the next sector number as the last 32 bits */
|
|
function sleuth_fat(idx, cnt, sectors, ssz, fat_addrs) {
|
|
var q = ENDOFCHAIN;
|
|
if(idx === ENDOFCHAIN) {
|
|
if(cnt !== 0) throw new Error("DIFAT chain shorter than expected");
|
|
} else if(idx !== -1 /*FREESECT*/) {
|
|
var sector = sectors[idx], m = (ssz>>>2)-1;
|
|
if(!sector) return;
|
|
for(var i = 0; i < m; ++i) {
|
|
if((q = __readInt32LE(sector,i*4)) === ENDOFCHAIN) break;
|
|
fat_addrs.push(q);
|
|
}
|
|
if(cnt >= 1) sleuth_fat(__readInt32LE(sector,ssz-4),cnt - 1, sectors, ssz, fat_addrs);
|
|
}
|
|
}
|
|
|
|
/** Follow the linked list of sectors for a given starting point */
|
|
function get_sector_list(sectors, start, fat_addrs, ssz, chkd) {
|
|
var buf = [], buf_chain = [];
|
|
if(!chkd) chkd = [];
|
|
var modulus = ssz - 1, j = 0, jj = 0;
|
|
for(j=start; j>=0;) {
|
|
chkd[j] = true;
|
|
buf[buf.length] = j;
|
|
buf_chain.push(sectors[j]);
|
|
var addr = fat_addrs[Math.floor(j*4/ssz)];
|
|
jj = ((j*4) & modulus);
|
|
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
|
|
if(!sectors[addr]) break;
|
|
j = __readInt32LE(sectors[addr], jj);
|
|
}
|
|
return {nodes: buf, data:__toBuffer([buf_chain])};
|
|
}
|
|
|
|
/** Chase down the sector linked lists */
|
|
function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
|
|
var sl = sectors.length, sector_list = ([]);
|
|
var chkd = [], buf = [], buf_chain = [];
|
|
var modulus = ssz - 1, i=0, j=0, k=0, jj=0;
|
|
for(i=0; i < sl; ++i) {
|
|
buf = ([]);
|
|
k = (i + dir_start); if(k >= sl) k-=sl;
|
|
if(chkd[k]) continue;
|
|
buf_chain = [];
|
|
var seen = [];
|
|
for(j=k; j>=0;) {
|
|
seen[j] = true;
|
|
chkd[j] = true;
|
|
buf[buf.length] = j;
|
|
buf_chain.push(sectors[j]);
|
|
var addr = fat_addrs[Math.floor(j*4/ssz)];
|
|
jj = ((j*4) & modulus);
|
|
if(ssz < 4 + jj) throw new Error("FAT boundary crossed: " + j + " 4 "+ssz);
|
|
if(!sectors[addr]) break;
|
|
j = __readInt32LE(sectors[addr], jj);
|
|
if(seen[j]) break;
|
|
}
|
|
sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])});
|
|
}
|
|
return sector_list;
|
|
}
|
|
|
|
/* [MS-CFB] 2.6.1 Compound File Directory Entry */
|
|
function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, FileIndex, mini) {
|
|
var minifat_store = 0, pl = (Paths.length?2:0);
|
|
var sector = sector_list[dir_start].data;
|
|
var i = 0, namelen = 0, name;
|
|
for(; i < sector.length; i+= 128) {
|
|
var blob = sector.slice(i, i+128);
|
|
prep_blob(blob, 64);
|
|
namelen = blob.read_shift(2);
|
|
name = __utf16le(blob,0,namelen-pl);
|
|
Paths.push(name);
|
|
var o = ({
|
|
name: name,
|
|
type: blob.read_shift(1),
|
|
color: blob.read_shift(1),
|
|
L: blob.read_shift(4, 'i'),
|
|
R: blob.read_shift(4, 'i'),
|
|
C: blob.read_shift(4, 'i'),
|
|
clsid: blob.read_shift(16),
|
|
state: blob.read_shift(4, 'i'),
|
|
start: 0,
|
|
size: 0
|
|
});
|
|
var ctime = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
|
|
if(ctime !== 0) o.ct = read_date(blob, blob.l-8);
|
|
var mtime = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
|
|
if(mtime !== 0) o.mt = read_date(blob, blob.l-8);
|
|
o.start = blob.read_shift(4, 'i');
|
|
o.size = blob.read_shift(4, 'i');
|
|
if(o.size < 0 && o.start < 0) { o.size = o.type = 0; o.start = ENDOFCHAIN; o.name = ""; }
|
|
if(o.type === 5) { /* root */
|
|
minifat_store = o.start;
|
|
if(nmfs > 0 && minifat_store !== ENDOFCHAIN) sector_list[minifat_store].name = "!StreamData";
|
|
/*minifat_size = o.size;*/
|
|
} else if(o.size >= 4096 /* MSCSZ */) {
|
|
o.storage = 'fat';
|
|
if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
|
|
sector_list[o.start].name = o.name;
|
|
o.content = (sector_list[o.start].data.slice(0,o.size));
|
|
} else {
|
|
o.storage = 'minifat';
|
|
if(o.size < 0) o.size = 0;
|
|
else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
|
|
o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
|
|
}
|
|
}
|
|
if(o.content) prep_blob(o.content, 0);
|
|
files[name] = o;
|
|
FileIndex.push(o);
|
|
}
|
|
}
|
|
|
|
function read_date(blob, offset) {
|
|
return new Date(( ( (__readUInt32LE(blob,offset+4)/1e7)*Math.pow(2,32)+__readUInt32LE(blob,offset)/1e7 ) - 11644473600)*1000);
|
|
}
|
|
|
|
function read_file(filename, options) {
|
|
get_fs();
|
|
return parse(fs.readFileSync(filename), options);
|
|
}
|
|
|
|
function read(blob, options) {
|
|
var type = options && options.type;
|
|
if(!type) {
|
|
if(has_buf && Buffer.isBuffer(blob)) type = "buffer";
|
|
}
|
|
switch(type || "base64") {
|
|
case "file": return read_file(blob, options);
|
|
case "base64": return parse(s2a(Base64_decode(blob)), options);
|
|
case "binary": return parse(blob, options);
|
|
}
|
|
return parse(blob, options);
|
|
}
|
|
|
|
function init_cfb(cfb, opts) {
|
|
var o = opts || {}, root = o.root || "Root Entry";
|
|
if(!cfb.FullPaths) cfb.FullPaths = [];
|
|
if(!cfb.FileIndex) cfb.FileIndex = [];
|
|
if(cfb.FullPaths.length !== cfb.FileIndex.length) throw new Error("inconsistent CFB structure");
|
|
if(cfb.FullPaths.length === 0) {
|
|
cfb.FullPaths[0] = root + "/";
|
|
cfb.FileIndex[0] = ({ name: root, type: 5 });
|
|
}
|
|
if(o.CLSID) cfb.FileIndex[0].clsid = o.CLSID;
|
|
seed_cfb(cfb);
|
|
}
|
|
function seed_cfb(cfb) {
|
|
var nm = "\u0001Sh33tJ5";
|
|
if(CFB.find(cfb, "/" + nm)) return;
|
|
var p = new_buf(4); p[0] = 55; p[1] = p[3] = 50; p[2] = 54;
|
|
cfb.FileIndex.push(({ name: nm, type: 2, content:p, size:4, L:69, R:69, C:69 }));
|
|
cfb.FullPaths.push(cfb.FullPaths[0] + nm);
|
|
rebuild_cfb(cfb);
|
|
}
|
|
function rebuild_cfb(cfb, f) {
|
|
init_cfb(cfb);
|
|
var gc = false, s = false;
|
|
for(var i = cfb.FullPaths.length - 1; i >= 0; --i) {
|
|
var _file = cfb.FileIndex[i];
|
|
switch(_file.type) {
|
|
case 0:
|
|
if(s) gc = true;
|
|
else { cfb.FileIndex.pop(); cfb.FullPaths.pop(); }
|
|
break;
|
|
case 1: case 2: case 5:
|
|
s = true;
|
|
if(isNaN(_file.R * _file.L * _file.C)) gc = true;
|
|
if(_file.R > -1 && _file.L > -1 && _file.R == _file.L) gc = true;
|
|
break;
|
|
default: gc = true; break;
|
|
}
|
|
}
|
|
if(!gc && !f) return;
|
|
|
|
var now = new Date(1987, 1, 19), j = 0;
|
|
// Track which names exist
|
|
var fullPaths = Object.create ? Object.create(null) : {};
|
|
var data = [];
|
|
for(i = 0; i < cfb.FullPaths.length; ++i) {
|
|
fullPaths[cfb.FullPaths[i]] = true;
|
|
if(cfb.FileIndex[i].type === 0) continue;
|
|
data.push([cfb.FullPaths[i], cfb.FileIndex[i]]);
|
|
}
|
|
for(i = 0; i < data.length; ++i) {
|
|
var dad = dirname(data[i][0]);
|
|
s = fullPaths[dad];
|
|
while(!s) {
|
|
while(dirname(dad) && !fullPaths[dirname(dad)]) dad = dirname(dad);
|
|
|
|
data.push([dad, ({
|
|
name: filename(dad).replace("/",""),
|
|
type: 1,
|
|
clsid: HEADER_CLSID,
|
|
ct: now, mt: now,
|
|
content: null
|
|
})]);
|
|
|
|
// Add name to set
|
|
fullPaths[dad] = true;
|
|
|
|
dad = dirname(data[i][0]);
|
|
s = fullPaths[dad];
|
|
}
|
|
}
|
|
|
|
data.sort(function(x,y) { return namecmp(x[0], y[0]); });
|
|
cfb.FullPaths = []; cfb.FileIndex = [];
|
|
for(i = 0; i < data.length; ++i) { cfb.FullPaths[i] = data[i][0]; cfb.FileIndex[i] = data[i][1]; }
|
|
for(i = 0; i < data.length; ++i) {
|
|
var elt = cfb.FileIndex[i];
|
|
var nm = cfb.FullPaths[i];
|
|
|
|
elt.name = filename(nm).replace("/","");
|
|
elt.L = elt.R = elt.C = -(elt.color = 1);
|
|
elt.size = elt.content ? elt.content.length : 0;
|
|
elt.start = 0;
|
|
elt.clsid = (elt.clsid || HEADER_CLSID);
|
|
if(i === 0) {
|
|
elt.C = data.length > 1 ? 1 : -1;
|
|
elt.size = 0;
|
|
elt.type = 5;
|
|
} else if(nm.slice(-1) == "/") {
|
|
for(j=i+1;j < data.length; ++j) if(dirname(cfb.FullPaths[j])==nm) break;
|
|
elt.C = j >= data.length ? -1 : j;
|
|
for(j=i+1;j < data.length; ++j) if(dirname(cfb.FullPaths[j])==dirname(nm)) break;
|
|
elt.R = j >= data.length ? -1 : j;
|
|
elt.type = 1;
|
|
} else {
|
|
if(dirname(cfb.FullPaths[i+1]||"") == dirname(nm)) elt.R = i + 1;
|
|
elt.type = 2;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
function _write(cfb, options) {
|
|
var _opts = options || {};
|
|
/* MAD is order-sensitive, skip rebuild and sort */
|
|
if(_opts.fileType == 'mad') return write_mad(cfb, _opts);
|
|
rebuild_cfb(cfb);
|
|
switch(_opts.fileType) {
|
|
case 'zip': return write_zip(cfb, _opts);
|
|
//case 'mad': return write_mad(cfb, _opts);
|
|
}
|
|
var L = (function(cfb){
|
|
var mini_size = 0, fat_size = 0;
|
|
for(var i = 0; i < cfb.FileIndex.length; ++i) {
|
|
var file = cfb.FileIndex[i];
|
|
if(!file.content) continue;
|
|
var flen = file.content.length;
|
|
if(flen > 0){
|
|
if(flen < 0x1000) mini_size += (flen + 0x3F) >> 6;
|
|
else fat_size += (flen + 0x01FF) >> 9;
|
|
}
|
|
}
|
|
var dir_cnt = (cfb.FullPaths.length +3) >> 2;
|
|
var mini_cnt = (mini_size + 7) >> 3;
|
|
var mfat_cnt = (mini_size + 0x7F) >> 7;
|
|
var fat_base = mini_cnt + fat_size + dir_cnt + mfat_cnt;
|
|
var fat_cnt = (fat_base + 0x7F) >> 7;
|
|
var difat_cnt = fat_cnt <= 109 ? 0 : Math.ceil((fat_cnt-109)/0x7F);
|
|
while(((fat_base + fat_cnt + difat_cnt + 0x7F) >> 7) > fat_cnt) difat_cnt = ++fat_cnt <= 109 ? 0 : Math.ceil((fat_cnt-109)/0x7F);
|
|
var L = [1, difat_cnt, fat_cnt, mfat_cnt, dir_cnt, fat_size, mini_size, 0];
|
|
cfb.FileIndex[0].size = mini_size << 6;
|
|
L[7] = (cfb.FileIndex[0].start=L[0]+L[1]+L[2]+L[3]+L[4]+L[5])+((L[6]+7) >> 3);
|
|
return L;
|
|
})(cfb);
|
|
var o = new_buf(L[7] << 9);
|
|
var i = 0, T = 0;
|
|
{
|
|
for(i = 0; i < 8; ++i) o.write_shift(1, HEADER_SIG[i]);
|
|
for(i = 0; i < 8; ++i) o.write_shift(2, 0);
|
|
o.write_shift(2, 0x003E);
|
|
o.write_shift(2, 0x0003);
|
|
o.write_shift(2, 0xFFFE);
|
|
o.write_shift(2, 0x0009);
|
|
o.write_shift(2, 0x0006);
|
|
for(i = 0; i < 3; ++i) o.write_shift(2, 0);
|
|
o.write_shift(4, 0);
|
|
o.write_shift(4, L[2]);
|
|
o.write_shift(4, L[0] + L[1] + L[2] + L[3] - 1);
|
|
o.write_shift(4, 0);
|
|
o.write_shift(4, 1<<12);
|
|
o.write_shift(4, L[3] ? L[0] + L[1] + L[2] - 1: ENDOFCHAIN);
|
|
o.write_shift(4, L[3]);
|
|
o.write_shift(-4, L[1] ? L[0] - 1: ENDOFCHAIN);
|
|
o.write_shift(4, L[1]);
|
|
for(i = 0; i < 109; ++i) o.write_shift(-4, i < L[2] ? L[1] + i : -1);
|
|
}
|
|
if(L[1]) {
|
|
for(T = 0; T < L[1]; ++T) {
|
|
for(; i < 236 + T * 127; ++i) o.write_shift(-4, i < L[2] ? L[1] + i : -1);
|
|
o.write_shift(-4, T === L[1] - 1 ? ENDOFCHAIN : T + 1);
|
|
}
|
|
}
|
|
var chainit = function(w) {
|
|
for(T += w; i<T-1; ++i) o.write_shift(-4, i+1);
|
|
if(w) { ++i; o.write_shift(-4, ENDOFCHAIN); }
|
|
};
|
|
T = i = 0;
|
|
for(T+=L[1]; i<T; ++i) o.write_shift(-4, consts.DIFSECT);
|
|
for(T+=L[2]; i<T; ++i) o.write_shift(-4, consts.FATSECT);
|
|
chainit(L[3]);
|
|
chainit(L[4]);
|
|
var j = 0, flen = 0;
|
|
var file = cfb.FileIndex[0];
|
|
for(; j < cfb.FileIndex.length; ++j) {
|
|
file = cfb.FileIndex[j];
|
|
if(!file.content) continue;
|
|
flen = file.content.length;
|
|
if(flen < 0x1000) continue;
|
|
file.start = T;
|
|
chainit((flen + 0x01FF) >> 9);
|
|
}
|
|
chainit((L[6] + 7) >> 3);
|
|
while(o.l & 0x1FF) o.write_shift(-4, consts.ENDOFCHAIN);
|
|
T = i = 0;
|
|
for(j = 0; j < cfb.FileIndex.length; ++j) {
|
|
file = cfb.FileIndex[j];
|
|
if(!file.content) continue;
|
|
flen = file.content.length;
|
|
if(!flen || flen >= 0x1000) continue;
|
|
file.start = T;
|
|
chainit((flen + 0x3F) >> 6);
|
|
}
|
|
while(o.l & 0x1FF) o.write_shift(-4, consts.ENDOFCHAIN);
|
|
for(i = 0; i < L[4]<<2; ++i) {
|
|
var nm = cfb.FullPaths[i];
|
|
if(!nm || nm.length === 0) {
|
|
for(j = 0; j < 17; ++j) o.write_shift(4, 0);
|
|
for(j = 0; j < 3; ++j) o.write_shift(4, -1);
|
|
for(j = 0; j < 12; ++j) o.write_shift(4, 0);
|
|
continue;
|
|
}
|
|
file = cfb.FileIndex[i];
|
|
if(i === 0) file.start = file.size ? file.start - 1 : ENDOFCHAIN;
|
|
var _nm = (i === 0 && _opts.root) || file.name;
|
|
if(_nm.length > 32) {
|
|
console.error("Name " + _nm + " will be truncated to " + _nm.slice(0,32));
|
|
_nm = _nm.slice(0, 32);
|
|
}
|
|
flen = 2*(_nm.length+1);
|
|
o.write_shift(64, _nm, "utf16le");
|
|
o.write_shift(2, flen);
|
|
o.write_shift(1, file.type);
|
|
o.write_shift(1, file.color);
|
|
o.write_shift(-4, file.L);
|
|
o.write_shift(-4, file.R);
|
|
o.write_shift(-4, file.C);
|
|
if(!file.clsid) for(j = 0; j < 4; ++j) o.write_shift(4, 0);
|
|
else o.write_shift(16, file.clsid, "hex");
|
|
o.write_shift(4, file.state || 0);
|
|
o.write_shift(4, 0); o.write_shift(4, 0);
|
|
o.write_shift(4, 0); o.write_shift(4, 0);
|
|
o.write_shift(4, file.start);
|
|
o.write_shift(4, file.size); o.write_shift(4, 0);
|
|
}
|
|
for(i = 1; i < cfb.FileIndex.length; ++i) {
|
|
file = cfb.FileIndex[i];
|
|
if(file.size >= 0x1000) {
|
|
o.l = (file.start+1) << 9;
|
|
if (has_buf && Buffer.isBuffer(file.content)) {
|
|
file.content.copy(o, o.l, 0, file.size);
|
|
// o is a 0-filled Buffer so just set next offset
|
|
o.l += (file.size + 511) & -512;
|
|
} else {
|
|
for(j = 0; j < file.size; ++j) o.write_shift(1, file.content[j]);
|
|
for(; j & 0x1FF; ++j) o.write_shift(1, 0);
|
|
}
|
|
}
|
|
}
|
|
for(i = 1; i < cfb.FileIndex.length; ++i) {
|
|
file = cfb.FileIndex[i];
|
|
if(file.size > 0 && file.size < 0x1000) {
|
|
if (has_buf && Buffer.isBuffer(file.content)) {
|
|
file.content.copy(o, o.l, 0, file.size);
|
|
// o is a 0-filled Buffer so just set next offset
|
|
o.l += (file.size + 63) & -64;
|
|
} else {
|
|
for(j = 0; j < file.size; ++j) o.write_shift(1, file.content[j]);
|
|
for(; j & 0x3F; ++j) o.write_shift(1, 0);
|
|
}
|
|
}
|
|
}
|
|
if (has_buf) {
|
|
o.l = o.length;
|
|
} else {
|
|
// When using Buffer, already 0-filled
|
|
while(o.l < o.length) o.write_shift(1, 0);
|
|
}
|
|
return o;
|
|
}
|
|
/* [MS-CFB] 2.6.4 (Unicode 3.0.1 case conversion) */
|
|
function find(cfb, path) {
|
|
var UCFullPaths = cfb.FullPaths.map(function(x) { return x.toUpperCase(); });
|
|
var UCPaths = UCFullPaths.map(function(x) { var y = x.split("/"); return y[y.length - (x.slice(-1) == "/" ? 2 : 1)]; });
|
|
var k = false;
|
|
if(path.charCodeAt(0) === 47 /* "/" */) { k = true; path = UCFullPaths[0].slice(0, -1) + path; }
|
|
else k = path.indexOf("/") !== -1;
|
|
var UCPath = path.toUpperCase();
|
|
var w = k === true ? UCFullPaths.indexOf(UCPath) : UCPaths.indexOf(UCPath);
|
|
if(w !== -1) return cfb.FileIndex[w];
|
|
|
|
var m = !UCPath.match(chr1);
|
|
UCPath = UCPath.replace(chr0,'');
|
|
if(m) UCPath = UCPath.replace(chr1,'!');
|
|
for(w = 0; w < UCFullPaths.length; ++w) {
|
|
if((m ? UCFullPaths[w].replace(chr1,'!') : UCFullPaths[w]).replace(chr0,'') == UCPath) return cfb.FileIndex[w];
|
|
if((m ? UCPaths[w].replace(chr1,'!') : UCPaths[w]).replace(chr0,'') == UCPath) return cfb.FileIndex[w];
|
|
}
|
|
return null;
|
|
}
|
|
/** CFB Constants */
|
|
var MSSZ = 64; /* Mini Sector Size = 1<<6 */
|
|
//var MSCSZ = 4096; /* Mini Stream Cutoff Size */
|
|
/* 2.1 Compound File Sector Numbers and Types */
|
|
var ENDOFCHAIN = -2;
|
|
/* 2.2 Compound File Header */
|
|
var HEADER_SIGNATURE = 'd0cf11e0a1b11ae1';
|
|
var HEADER_SIG = [0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1];
|
|
var HEADER_CLSID = '00000000000000000000000000000000';
|
|
var consts = {
|
|
/* 2.1 Compund File Sector Numbers and Types */
|
|
MAXREGSECT: -6,
|
|
DIFSECT: -4,
|
|
FATSECT: -3,
|
|
ENDOFCHAIN: ENDOFCHAIN,
|
|
FREESECT: -1,
|
|
/* 2.2 Compound File Header */
|
|
HEADER_SIGNATURE: HEADER_SIGNATURE,
|
|
HEADER_MINOR_VERSION: '3e00',
|
|
MAXREGSID: -6,
|
|
NOSTREAM: -1,
|
|
HEADER_CLSID: HEADER_CLSID,
|
|
/* 2.6.1 Compound File Directory Entry */
|
|
EntryTypes: ['unknown','storage','stream','lockbytes','property','root']
|
|
};
|
|
|
|
function write_file(cfb, filename, options) {
|
|
get_fs();
|
|
var o = _write(cfb, options);
|
|
fs.writeFileSync(filename, o);
|
|
}
|
|
|
|
function a2s(o) {
|
|
var out = new Array(o.length);
|
|
for(var i = 0; i < o.length; ++i) out[i] = String.fromCharCode(o[i]);
|
|
return out.join("");
|
|
}
|
|
|
|
function write(cfb, options) {
|
|
var o = _write(cfb, options);
|
|
switch(options && options.type || "buffer") {
|
|
case "file": get_fs(); fs.writeFileSync(options.filename, (o)); return o;
|
|
case "binary": return typeof o == "string" ? o : a2s(o);
|
|
case "base64": return Base64_encode(typeof o == "string" ? o : a2s(o));
|
|
case "buffer": if(has_buf) return Buffer.isBuffer(o) ? o : Buffer_from(o);
|
|
/* falls through */
|
|
case "array": return typeof o == "string" ? s2a(o) : o;
|
|
}
|
|
return o;
|
|
}
|
|
/* node < 8.1 zlib does not expose bytesRead, so default to pure JS */
|
|
var _zlib;
|
|
function use_zlib(zlib) { try {
|
|
var InflateRaw = zlib.InflateRaw;
|
|
var InflRaw = new InflateRaw();
|
|
InflRaw._processChunk(new Uint8Array([3, 0]), InflRaw._finishFlushFlag);
|
|
if(InflRaw.bytesRead) _zlib = zlib;
|
|
else throw new Error("zlib does not expose bytesRead");
|
|
} catch(e) {console.error("cannot use native zlib: " + (e.message || e)); } }
|
|
|
|
function _inflateRawSync(payload, usz) {
|
|
if(!_zlib) return _inflate(payload, usz);
|
|
var InflateRaw = _zlib.InflateRaw;
|
|
var InflRaw = new InflateRaw();
|
|
var out = InflRaw._processChunk(payload.slice(payload.l), InflRaw._finishFlushFlag);
|
|
payload.l += InflRaw.bytesRead;
|
|
return out;
|
|
}
|
|
|
|
function _deflateRawSync(payload) {
|
|
return _zlib ? _zlib.deflateRawSync(payload) : _deflate(payload);
|
|
}
|
|
var CLEN_ORDER = [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];
|
|
|
|
/* LEN_ID = [ 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285 ]; */
|
|
var LEN_LN = [ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13 , 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258 ];
|
|
|
|
/* DST_ID = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 ]; */
|
|
var DST_LN = [ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577 ];
|
|
|
|
function bit_swap_8(n) { var t = (((((n<<1)|(n<<11)) & 0x22110) | (((n<<5)|(n<<15)) & 0x88440))); return ((t>>16) | (t>>8) |t)&0xFF; }
|
|
|
|
var use_typed_arrays = typeof Uint8Array !== 'undefined';
|
|
|
|
var bitswap8 = use_typed_arrays ? new Uint8Array(1<<8) : [];
|
|
for(var q = 0; q < (1<<8); ++q) bitswap8[q] = bit_swap_8(q);
|
|
|
|
function bit_swap_n(n, b) {
|
|
var rev = bitswap8[n & 0xFF];
|
|
if(b <= 8) return rev >>> (8-b);
|
|
rev = (rev << 8) | bitswap8[(n>>8)&0xFF];
|
|
if(b <= 16) return rev >>> (16-b);
|
|
rev = (rev << 8) | bitswap8[(n>>16)&0xFF];
|
|
return rev >>> (24-b);
|
|
}
|
|
|
|
/* helpers for unaligned bit reads */
|
|
function read_bits_2(buf, bl) { var w = (bl&7), h = (bl>>>3); return ((buf[h]|(w <= 6 ? 0 : buf[h+1]<<8))>>>w)& 0x03; }
|
|
function read_bits_3(buf, bl) { var w = (bl&7), h = (bl>>>3); return ((buf[h]|(w <= 5 ? 0 : buf[h+1]<<8))>>>w)& 0x07; }
|
|
function read_bits_4(buf, bl) { var w = (bl&7), h = (bl>>>3); return ((buf[h]|(w <= 4 ? 0 : buf[h+1]<<8))>>>w)& 0x0F; }
|
|
function read_bits_5(buf, bl) { var w = (bl&7), h = (bl>>>3); return ((buf[h]|(w <= 3 ? 0 : buf[h+1]<<8))>>>w)& 0x1F; }
|
|
function read_bits_7(buf, bl) { var w = (bl&7), h = (bl>>>3); return ((buf[h]|(w <= 1 ? 0 : buf[h+1]<<8))>>>w)& 0x7F; }
|
|
|
|
/* works up to n = 3 * 8 + 1 = 25 */
|
|
function read_bits_n(buf, bl, n) {
|
|
var w = (bl&7), h = (bl>>>3), f = ((1<<n)-1);
|
|
var v = buf[h] >>> w;
|
|
if(n < 8 - w) return v & f;
|
|
v |= buf[h+1]<<(8-w);
|
|
if(n < 16 - w) return v & f;
|
|
v |= buf[h+2]<<(16-w);
|
|
if(n < 24 - w) return v & f;
|
|
v |= buf[h+3]<<(24-w);
|
|
return v & f;
|
|
}
|
|
|
|
/* helpers for unaligned bit writes */
|
|
function write_bits_3(buf, bl, v) { var w = bl & 7, h = bl >>> 3;
|
|
if(w <= 5) buf[h] |= (v & 7) << w;
|
|
else {
|
|
buf[h] |= (v << w) & 0xFF;
|
|
buf[h+1] = (v&7) >> (8-w);
|
|
}
|
|
return bl + 3;
|
|
}
|
|
|
|
function write_bits_1(buf, bl, v) {
|
|
var w = bl & 7, h = bl >>> 3;
|
|
v = (v&1) << w;
|
|
buf[h] |= v;
|
|
return bl + 1;
|
|
}
|
|
function write_bits_8(buf, bl, v) {
|
|
var w = bl & 7, h = bl >>> 3;
|
|
v <<= w;
|
|
buf[h] |= v & 0xFF; v >>>= 8;
|
|
buf[h+1] = v;
|
|
return bl + 8;
|
|
}
|
|
function write_bits_16(buf, bl, v) {
|
|
var w = bl & 7, h = bl >>> 3;
|
|
v <<= w;
|
|
buf[h] |= v & 0xFF; v >>>= 8;
|
|
buf[h+1] = v & 0xFF;
|
|
buf[h+2] = v >>> 8;
|
|
return bl + 16;
|
|
}
|
|
|
|
/* until ArrayBuffer#realloc is a thing, fake a realloc */
|
|
function realloc(b, sz) {
|
|
var L = b.length, M = 2*L > sz ? 2*L : sz + 5, i = 0;
|
|
if(L >= sz) return b;
|
|
if(has_buf) {
|
|
var o = new_unsafe_buf(M);
|
|
// $FlowIgnore
|
|
if(b.copy) b.copy(o);
|
|
else for(; i < b.length; ++i) o[i] = b[i];
|
|
return o;
|
|
} else if(use_typed_arrays) {
|
|
var a = new Uint8Array(M);
|
|
if(a.set) a.set(b);
|
|
else for(; i < L; ++i) a[i] = b[i];
|
|
return a;
|
|
}
|
|
b.length = M;
|
|
return b;
|
|
}
|
|
|
|
/* zero-filled arrays for older browsers */
|
|
function zero_fill_array(n) {
|
|
var o = new Array(n);
|
|
for(var i = 0; i < n; ++i) o[i] = 0;
|
|
return o;
|
|
}
|
|
|
|
/* build tree (used for literals and lengths) */
|
|
function build_tree(clens, cmap, MAX) {
|
|
var maxlen = 1, w = 0, i = 0, j = 0, ccode = 0, L = clens.length;
|
|
|
|
var bl_count = use_typed_arrays ? new Uint16Array(32) : zero_fill_array(32);
|
|
for(i = 0; i < 32; ++i) bl_count[i] = 0;
|
|
|
|
for(i = L; i < MAX; ++i) clens[i] = 0;
|
|
L = clens.length;
|
|
|
|
var ctree = use_typed_arrays ? new Uint16Array(L) : zero_fill_array(L); // []
|
|
|
|
/* build code tree */
|
|
for(i = 0; i < L; ++i) {
|
|
bl_count[(w = clens[i])]++;
|
|
if(maxlen < w) maxlen = w;
|
|
ctree[i] = 0;
|
|
}
|
|
bl_count[0] = 0;
|
|
for(i = 1; i <= maxlen; ++i) bl_count[i+16] = (ccode = (ccode + bl_count[i-1])<<1);
|
|
for(i = 0; i < L; ++i) {
|
|
ccode = clens[i];
|
|
if(ccode != 0) ctree[i] = bl_count[ccode+16]++;
|
|
}
|
|
|
|
/* cmap[maxlen + 4 bits] = (off&15) + (lit<<4) reverse mapping */
|
|
var cleni = 0;
|
|
for(i = 0; i < L; ++i) {
|
|
cleni = clens[i];
|
|
if(cleni != 0) {
|
|
ccode = bit_swap_n(ctree[i], maxlen)>>(maxlen-cleni);
|
|
for(j = (1<<(maxlen + 4 - cleni)) - 1; j>=0; --j)
|
|
cmap[ccode|(j<<cleni)] = (cleni&15) | (i<<4);
|
|
}
|
|
}
|
|
return maxlen;
|
|
}
|
|
|
|
/* Fixed Huffman */
|
|
var fix_lmap = use_typed_arrays ? new Uint16Array(512) : zero_fill_array(512);
|
|
var fix_dmap = use_typed_arrays ? new Uint16Array(32) : zero_fill_array(32);
|
|
if(!use_typed_arrays) {
|
|
for(var i = 0; i < 512; ++i) fix_lmap[i] = 0;
|
|
for(i = 0; i < 32; ++i) fix_dmap[i] = 0;
|
|
}
|
|
(function() {
|
|
var dlens = [];
|
|
var i = 0;
|
|
for(;i<32; i++) dlens.push(5);
|
|
build_tree(dlens, fix_dmap, 32);
|
|
|
|
var clens = [];
|
|
i = 0;
|
|
for(; i<=143; i++) clens.push(8);
|
|
for(; i<=255; i++) clens.push(9);
|
|
for(; i<=279; i++) clens.push(7);
|
|
for(; i<=287; i++) clens.push(8);
|
|
build_tree(clens, fix_lmap, 288);
|
|
})();var _deflateRaw = (function _deflateRawIIFE() {
|
|
var DST_LN_RE = use_typed_arrays ? new Uint8Array(0x8000) : [];
|
|
var j = 0, k = 0;
|
|
for(; j < DST_LN.length - 1; ++j) {
|
|
for(; k < DST_LN[j+1]; ++k) DST_LN_RE[k] = j;
|
|
}
|
|
for(;k < 32768; ++k) DST_LN_RE[k] = 29;
|
|
|
|
var LEN_LN_RE = use_typed_arrays ? new Uint8Array(0x103) : [];
|
|
for(j = 0, k = 0; j < LEN_LN.length - 1; ++j) {
|
|
for(; k < LEN_LN[j+1]; ++k) LEN_LN_RE[k] = j;
|
|
}
|
|
|
|
function write_stored(data, out) {
|
|
var boff = 0;
|
|
while(boff < data.length) {
|
|
var L = Math.min(0xFFFF, data.length - boff);
|
|
var h = boff + L == data.length;
|
|
out.write_shift(1, +h);
|
|
out.write_shift(2, L);
|
|
out.write_shift(2, (~L) & 0xFFFF);
|
|
while(L-- > 0) out[out.l++] = data[boff++];
|
|
}
|
|
return out.l;
|
|
}
|
|
|
|
/* Fixed Huffman */
|
|
function write_huff_fixed(data, out) {
|
|
var bl = 0;
|
|
var boff = 0;
|
|
var addrs = use_typed_arrays ? new Uint16Array(0x8000) : [];
|
|
while(boff < data.length) {
|
|
var L = /* data.length - boff; */ Math.min(0xFFFF, data.length - boff);
|
|
|
|
/* write a stored block for short data */
|
|
if(L < 10) {
|
|
bl = write_bits_3(out, bl, +!!(boff + L == data.length)); // jshint ignore:line
|
|
if(bl & 7) bl += 8 - (bl & 7);
|
|
out.l = (bl / 8) | 0;
|
|
out.write_shift(2, L);
|
|
out.write_shift(2, (~L) & 0xFFFF);
|
|
while(L-- > 0) out[out.l++] = data[boff++];
|
|
bl = out.l * 8;
|
|
continue;
|
|
}
|
|
|
|
bl = write_bits_3(out, bl, +!!(boff + L == data.length) + 2); // jshint ignore:line
|
|
var hash = 0;
|
|
while(L-- > 0) {
|
|
var d = data[boff];
|
|
hash = ((hash << 5) ^ d) & 0x7FFF;
|
|
|
|
var match = -1, mlen = 0;
|
|
|
|
if((match = addrs[hash])) {
|
|
match |= boff & ~0x7FFF;
|
|
if(match > boff) match -= 0x8000;
|
|
if(match < boff) while(data[match + mlen] == data[boff + mlen] && mlen < 250) ++mlen;
|
|
}
|
|
|
|
if(mlen > 2) {
|
|
/* Copy Token */
|
|
d = LEN_LN_RE[mlen];
|
|
if(d <= 22) bl = write_bits_8(out, bl, bitswap8[d+1]>>1) - 1;
|
|
else {
|
|
write_bits_8(out, bl, 3);
|
|
bl += 5;
|
|
write_bits_8(out, bl, bitswap8[d-23]>>5);
|
|
bl += 3;
|
|
}
|
|
var len_eb = (d < 8) ? 0 : ((d - 4)>>2);
|
|
if(len_eb > 0) {
|
|
write_bits_16(out, bl, mlen - LEN_LN[d]);
|
|
bl += len_eb;
|
|
}
|
|
|
|
d = DST_LN_RE[boff - match];
|
|
bl = write_bits_8(out, bl, bitswap8[d]>>3);
|
|
bl -= 3;
|
|
|
|
var dst_eb = d < 4 ? 0 : (d-2)>>1;
|
|
if(dst_eb > 0) {
|
|
write_bits_16(out, bl, boff - match - DST_LN[d]);
|
|
bl += dst_eb;
|
|
}
|
|
for(var q = 0; q < mlen; ++q) {
|
|
addrs[hash] = boff & 0x7FFF;
|
|
hash = ((hash << 5) ^ data[boff]) & 0x7FFF;
|
|
++boff;
|
|
}
|
|
L-= mlen - 1;
|
|
} else {
|
|
/* Literal Token */
|
|
if(d <= 143) d = d + 48;
|
|
else bl = write_bits_1(out, bl, 1);
|
|
bl = write_bits_8(out, bl, bitswap8[d]);
|
|
addrs[hash] = boff & 0x7FFF;
|
|
++boff;
|
|
}
|
|
}
|
|
|
|
bl = write_bits_8(out, bl, 0) - 1;
|
|
}
|
|
out.l = ((bl + 7)/8)|0;
|
|
return out.l;
|
|
}
|
|
return function _deflateRaw(data, out) {
|
|
if(data.length < 8) return write_stored(data, out);
|
|
return write_huff_fixed(data, out);
|
|
};
|
|
})();
|
|
|
|
function _deflate(data) {
|
|
var buf = new_buf(50+Math.floor(data.length*1.1));
|
|
var off = _deflateRaw(data, buf);
|
|
return buf.slice(0, off);
|
|
}
|
|
/* modified inflate function also moves original read head */
|
|
|
|
var dyn_lmap = use_typed_arrays ? new Uint16Array(32768) : zero_fill_array(32768);
|
|
var dyn_dmap = use_typed_arrays ? new Uint16Array(32768) : zero_fill_array(32768);
|
|
var dyn_cmap = use_typed_arrays ? new Uint16Array(128) : zero_fill_array(128);
|
|
var dyn_len_1 = 1, dyn_len_2 = 1;
|
|
|
|
/* 5.5.3 Expanding Huffman Codes */
|
|
function dyn(data, boff) {
|
|
/* nomenclature from RFC1951 refers to bit values; these are offset by the implicit constant */
|
|
var _HLIT = read_bits_5(data, boff) + 257; boff += 5;
|
|
var _HDIST = read_bits_5(data, boff) + 1; boff += 5;
|
|
var _HCLEN = read_bits_4(data, boff) + 4; boff += 4;
|
|
var w = 0;
|
|
|
|
/* grab and store code lengths */
|
|
var clens = use_typed_arrays ? new Uint8Array(19) : zero_fill_array(19);
|
|
var ctree = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
|
|
var maxlen = 1;
|
|
var bl_count = use_typed_arrays ? new Uint8Array(8) : zero_fill_array(8);
|
|
var next_code = use_typed_arrays ? new Uint8Array(8) : zero_fill_array(8);
|
|
var L = clens.length; /* 19 */
|
|
for(var i = 0; i < _HCLEN; ++i) {
|
|
clens[CLEN_ORDER[i]] = w = read_bits_3(data, boff);
|
|
if(maxlen < w) maxlen = w;
|
|
bl_count[w]++;
|
|
boff += 3;
|
|
}
|
|
|
|
/* build code tree */
|
|
var ccode = 0;
|
|
bl_count[0] = 0;
|
|
for(i = 1; i <= maxlen; ++i) next_code[i] = ccode = (ccode + bl_count[i-1])<<1;
|
|
for(i = 0; i < L; ++i) if((ccode = clens[i]) != 0) ctree[i] = next_code[ccode]++;
|
|
/* cmap[7 bits from stream] = (off&7) + (lit<<3) */
|
|
var cleni = 0;
|
|
for(i = 0; i < L; ++i) {
|
|
cleni = clens[i];
|
|
if(cleni != 0) {
|
|
ccode = bitswap8[ctree[i]]>>(8-cleni);
|
|
for(var j = (1<<(7-cleni))-1; j>=0; --j) dyn_cmap[ccode|(j<<cleni)] = (cleni&7) | (i<<3);
|
|
}
|
|
}
|
|
|
|
/* read literal and dist codes at once */
|
|
var hcodes = [];
|
|
maxlen = 1;
|
|
for(; hcodes.length < _HLIT + _HDIST;) {
|
|
ccode = dyn_cmap[read_bits_7(data, boff)];
|
|
boff += ccode & 7;
|
|
switch((ccode >>>= 3)) {
|
|
case 16:
|
|
w = 3 + read_bits_2(data, boff); boff += 2;
|
|
ccode = hcodes[hcodes.length - 1];
|
|
while(w-- > 0) hcodes.push(ccode);
|
|
break;
|
|
case 17:
|
|
w = 3 + read_bits_3(data, boff); boff += 3;
|
|
while(w-- > 0) hcodes.push(0);
|
|
break;
|
|
case 18:
|
|
w = 11 + read_bits_7(data, boff); boff += 7;
|
|
while(w -- > 0) hcodes.push(0);
|
|
break;
|
|
default:
|
|
hcodes.push(ccode);
|
|
if(maxlen < ccode) maxlen = ccode;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* build literal / length trees */
|
|
var h1 = hcodes.slice(0, _HLIT), h2 = hcodes.slice(_HLIT);
|
|
for(i = _HLIT; i < 286; ++i) h1[i] = 0;
|
|
for(i = _HDIST; i < 30; ++i) h2[i] = 0;
|
|
dyn_len_1 = build_tree(h1, dyn_lmap, 286);
|
|
dyn_len_2 = build_tree(h2, dyn_dmap, 30);
|
|
return boff;
|
|
}
|
|
|
|
/* return [ data, bytesRead ] */
|
|
function inflate(data, usz) {
|
|
/* shortcircuit for empty buffer [0x03, 0x00] */
|
|
if(data[0] == 3 && !(data[1] & 0x3)) { return [new_raw_buf(usz), 2]; }
|
|
|
|
/* bit offset */
|
|
var boff = 0;
|
|
|
|
/* header includes final bit and type bits */
|
|
var header = 0;
|
|
|
|
var outbuf = new_unsafe_buf(usz ? usz : (1<<18));
|
|
var woff = 0;
|
|
var OL = outbuf.length>>>0;
|
|
var max_len_1 = 0, max_len_2 = 0;
|
|
|
|
while((header&1) == 0) {
|
|
header = read_bits_3(data, boff); boff += 3;
|
|
if((header >>> 1) == 0) {
|
|
/* Stored block */
|
|
if(boff & 7) boff += 8 - (boff&7);
|
|
/* 2 bytes sz, 2 bytes bit inverse */
|
|
var sz = data[boff>>>3] | data[(boff>>>3)+1]<<8;
|
|
boff += 32;
|
|
/* push sz bytes */
|
|
if(sz > 0) {
|
|
if(!usz && OL < woff + sz) { outbuf = realloc(outbuf, woff + sz); OL = outbuf.length; }
|
|
while(sz-- > 0) { outbuf[woff++] = data[boff>>>3]; boff += 8; }
|
|
}
|
|
continue;
|
|
} else if((header >> 1) == 1) {
|
|
/* Fixed Huffman */
|
|
max_len_1 = 9; max_len_2 = 5;
|
|
} else {
|
|
/* Dynamic Huffman */
|
|
boff = dyn(data, boff);
|
|
max_len_1 = dyn_len_1; max_len_2 = dyn_len_2;
|
|
}
|
|
for(;;) { // while(true) is apparently out of vogue in modern JS circles
|
|
if(!usz && (OL < woff + 32767)) { outbuf = realloc(outbuf, woff + 32767); OL = outbuf.length; }
|
|
/* ingest code and move read head */
|
|
var bits = read_bits_n(data, boff, max_len_1);
|
|
var code = (header>>>1) == 1 ? fix_lmap[bits] : dyn_lmap[bits];
|
|
boff += code & 15; code >>>= 4;
|
|
/* 0-255 are literals, 256 is end of block token, 257+ are copy tokens */
|
|
if(((code>>>8)&0xFF) === 0) outbuf[woff++] = code;
|
|
else if(code == 256) break;
|
|
else {
|
|
code -= 257;
|
|
var len_eb = (code < 8) ? 0 : ((code-4)>>2); if(len_eb > 5) len_eb = 0;
|
|
var tgt = woff + LEN_LN[code];
|
|
/* length extra bits */
|
|
if(len_eb > 0) {
|
|
tgt += read_bits_n(data, boff, len_eb);
|
|
boff += len_eb;
|
|
}
|
|
|
|
/* dist code */
|
|
bits = read_bits_n(data, boff, max_len_2);
|
|
code = (header>>>1) == 1 ? fix_dmap[bits] : dyn_dmap[bits];
|
|
boff += code & 15; code >>>= 4;
|
|
var dst_eb = (code < 4 ? 0 : (code-2)>>1);
|
|
var dst = DST_LN[code];
|
|
/* dist extra bits */
|
|
if(dst_eb > 0) {
|
|
dst += read_bits_n(data, boff, dst_eb);
|
|
boff += dst_eb;
|
|
}
|
|
|
|
/* in the common case, manual byte copy is faster than TA set / Buffer copy */
|
|
if(!usz && OL < tgt) { outbuf = realloc(outbuf, tgt + 100); OL = outbuf.length; }
|
|
while(woff < tgt) { outbuf[woff] = outbuf[woff - dst]; ++woff; }
|
|
}
|
|
}
|
|
}
|
|
if(usz) return [outbuf, (boff+7)>>>3];
|
|
return [outbuf.slice(0, woff), (boff+7)>>>3];
|
|
}
|
|
|
|
function _inflate(payload, usz) {
|
|
var data = payload.slice(payload.l||0);
|
|
var out = inflate(data, usz);
|
|
payload.l += out[1];
|
|
return out[0];
|
|
}
|
|
|
|
function warn_or_throw(wrn, msg) {
|
|
if(wrn) { if(typeof console !== 'undefined') console.error(msg); }
|
|
else throw new Error(msg);
|
|
}
|
|
|
|
function parse_zip(file, options) {
|
|
var blob = file;
|
|
prep_blob(blob, 0);
|
|
|
|
var FileIndex = [], FullPaths = [];
|
|
var o = {
|
|
FileIndex: FileIndex,
|
|
FullPaths: FullPaths
|
|
};
|
|
init_cfb(o, { root: options.root });
|
|
|
|
/* find end of central directory, start just after signature */
|
|
var i = blob.length - 4;
|
|
while((blob[i] != 0x50 || blob[i+1] != 0x4b || blob[i+2] != 0x05 || blob[i+3] != 0x06) && i >= 0) --i;
|
|
blob.l = i + 4;
|
|
|
|
/* parse end of central directory */
|
|
blob.l += 4;
|
|
var fcnt = blob.read_shift(2);
|
|
blob.l += 6;
|
|
var start_cd = blob.read_shift(4);
|
|
|
|
/* parse central directory */
|
|
blob.l = start_cd;
|
|
|
|
for(i = 0; i < fcnt; ++i) {
|
|
/* trust local file header instead of CD entry */
|
|
blob.l += 20;
|
|
var csz = blob.read_shift(4);
|
|
var usz = blob.read_shift(4);
|
|
var namelen = blob.read_shift(2);
|
|
var efsz = blob.read_shift(2);
|
|
var fcsz = blob.read_shift(2);
|
|
blob.l += 8;
|
|
var offset = blob.read_shift(4);
|
|
var EF = parse_extra_field(blob.slice(blob.l+namelen, blob.l+namelen+efsz));
|
|
blob.l += namelen + efsz + fcsz;
|
|
|
|
var L = blob.l;
|
|
blob.l = offset + 4;
|
|
parse_local_file(blob, csz, usz, o, EF);
|
|
blob.l = L;
|
|
}
|
|
|
|
return o;
|
|
}
|
|
|
|
|
|
/* head starts just after local file header signature */
|
|
function parse_local_file(blob, csz, usz, o, EF) {
|
|
/* [local file header] */
|
|
blob.l += 2;
|
|
var flags = blob.read_shift(2);
|
|
var meth = blob.read_shift(2);
|
|
var date = parse_dos_date(blob);
|
|
|
|
if(flags & 0x2041) throw new Error("Unsupported ZIP encryption");
|
|
var crc32 = blob.read_shift(4);
|
|
var _csz = blob.read_shift(4);
|
|
var _usz = blob.read_shift(4);
|
|
|
|
var namelen = blob.read_shift(2);
|
|
var efsz = blob.read_shift(2);
|
|
|
|
// TODO: flags & (1<<11) // UTF8
|
|
var name = ""; for(var i = 0; i < namelen; ++i) name += String.fromCharCode(blob[blob.l++]);
|
|
if(efsz) {
|
|
var ef = parse_extra_field(blob.slice(blob.l, blob.l + efsz));
|
|
if((ef[0x5455]||{}).mt) date = ef[0x5455].mt;
|
|
if(((EF||{})[0x5455]||{}).mt) date = EF[0x5455].mt;
|
|
}
|
|
blob.l += efsz;
|
|
|
|
/* [encryption header] */
|
|
|
|
/* [file data] */
|
|
var data = blob.slice(blob.l, blob.l + _csz);
|
|
switch(meth) {
|
|
case 8: data = _inflateRawSync(blob, _usz); break;
|
|
case 0: break; // TODO: scan for magic number
|
|
default: throw new Error("Unsupported ZIP Compression method " + meth);
|
|
}
|
|
|
|
/* [data descriptor] */
|
|
var wrn = false;
|
|
if(flags & 8) {
|
|
crc32 = blob.read_shift(4);
|
|
if(crc32 == 0x08074b50) { crc32 = blob.read_shift(4); wrn = true; }
|
|
_csz = blob.read_shift(4);
|
|
_usz = blob.read_shift(4);
|
|
}
|
|
|
|
if(_csz != csz) warn_or_throw(wrn, "Bad compressed size: " + csz + " != " + _csz);
|
|
if(_usz != usz) warn_or_throw(wrn, "Bad uncompressed size: " + usz + " != " + _usz);
|
|
var _crc32 = CRC32.buf(data, 0);
|
|
if((crc32>>0) != (_crc32>>0)) warn_or_throw(wrn, "Bad CRC32 checksum: " + crc32 + " != " + _crc32);
|
|
cfb_add(o, name, data, {unsafe: true, mt: date});
|
|
}
|
|
function write_zip(cfb, options) {
|
|
var _opts = options || {};
|
|
var out = [], cdirs = [];
|
|
var o = new_buf(1);
|
|
var method = (_opts.compression ? 8 : 0), flags = 0;
|
|
var desc = false;
|
|
if(desc) flags |= 8;
|
|
var i = 0, j = 0;
|
|
|
|
var start_cd = 0, fcnt = 0;
|
|
var root = cfb.FullPaths[0], fp = root, fi = cfb.FileIndex[0];
|
|
var crcs = [];
|
|
var sz_cd = 0;
|
|
|
|
for(i = 1; i < cfb.FullPaths.length; ++i) {
|
|
fp = cfb.FullPaths[i].slice(root.length); fi = cfb.FileIndex[i];
|
|
if(!fi.size || !fi.content || fp == "\u0001Sh33tJ5") continue;
|
|
var start = start_cd;
|
|
|
|
/* TODO: CP437 filename */
|
|
var namebuf = new_buf(fp.length);
|
|
for(j = 0; j < fp.length; ++j) namebuf.write_shift(1, fp.charCodeAt(j) & 0x7F);
|
|
namebuf = namebuf.slice(0, namebuf.l);
|
|
crcs[fcnt] = CRC32.buf(fi.content, 0);
|
|
|
|
var outbuf = fi.content;
|
|
if(method == 8) outbuf = _deflateRawSync(outbuf);
|
|
|
|
/* local file header */
|
|
o = new_buf(30);
|
|
o.write_shift(4, 0x04034b50);
|
|
o.write_shift(2, 20);
|
|
o.write_shift(2, flags);
|
|
o.write_shift(2, method);
|
|
/* TODO: last mod file time/date */
|
|
if(fi.mt) write_dos_date(o, fi.mt);
|
|
else o.write_shift(4, 0);
|
|
o.write_shift(-4, (flags & 8) ? 0 : crcs[fcnt]);
|
|
o.write_shift(4, (flags & 8) ? 0 : outbuf.length);
|
|
o.write_shift(4, (flags & 8) ? 0 : fi.content.length);
|
|
o.write_shift(2, namebuf.length);
|
|
o.write_shift(2, 0);
|
|
|
|
start_cd += o.length;
|
|
out.push(o);
|
|
start_cd += namebuf.length;
|
|
out.push(namebuf);
|
|
|
|
/* TODO: extra fields? */
|
|
|
|
/* TODO: encryption header ? */
|
|
|
|
start_cd += outbuf.length;
|
|
out.push(outbuf);
|
|
|
|
/* data descriptor */
|
|
if(flags & 8) {
|
|
o = new_buf(12);
|
|
o.write_shift(-4, crcs[fcnt]);
|
|
o.write_shift(4, outbuf.length);
|
|
o.write_shift(4, fi.content.length);
|
|
start_cd += o.l;
|
|
out.push(o);
|
|
}
|
|
|
|
/* central directory */
|
|
o = new_buf(46);
|
|
o.write_shift(4, 0x02014b50);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, 20);
|
|
o.write_shift(2, flags);
|
|
o.write_shift(2, method);
|
|
o.write_shift(4, 0); /* TODO: last mod file time/date */
|
|
o.write_shift(-4, crcs[fcnt]);
|
|
|
|
o.write_shift(4, outbuf.length);
|
|
o.write_shift(4, fi.content.length);
|
|
o.write_shift(2, namebuf.length);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(4, 0);
|
|
o.write_shift(4, start);
|
|
|
|
sz_cd += o.l;
|
|
cdirs.push(o);
|
|
sz_cd += namebuf.length;
|
|
cdirs.push(namebuf);
|
|
++fcnt;
|
|
}
|
|
|
|
/* end of central directory */
|
|
o = new_buf(22);
|
|
o.write_shift(4, 0x06054b50);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, 0);
|
|
o.write_shift(2, fcnt);
|
|
o.write_shift(2, fcnt);
|
|
o.write_shift(4, sz_cd);
|
|
o.write_shift(4, start_cd);
|
|
o.write_shift(2, 0);
|
|
|
|
return bconcat(([bconcat((out)), bconcat(cdirs), o]));
|
|
}
|
|
var ContentTypeMap = ({
|
|
"htm": "text/html",
|
|
"xml": "text/xml",
|
|
|
|
"gif": "image/gif",
|
|
"jpg": "image/jpeg",
|
|
"png": "image/png",
|
|
|
|
"mso": "application/x-mso",
|
|
"thmx": "application/vnd.ms-officetheme",
|
|
"sh33tj5": "application/octet-stream"
|
|
});
|
|
|
|
function get_content_type(fi, fp) {
|
|
if(fi.ctype) return fi.ctype;
|
|
|
|
var ext = fi.name || "", m = ext.match(/\.([^\.]+)$/);
|
|
if(m && ContentTypeMap[m[1]]) return ContentTypeMap[m[1]];
|
|
|
|
if(fp) {
|
|
m = (ext = fp).match(/[\.\\]([^\.\\])+$/);
|
|
if(m && ContentTypeMap[m[1]]) return ContentTypeMap[m[1]];
|
|
}
|
|
|
|
return "application/octet-stream";
|
|
}
|
|
|
|
/* 76 character chunks TODO: intertwine encoding */
|
|
function write_base64_76(bstr) {
|
|
var data = Base64_encode(bstr);
|
|
var o = [];
|
|
for(var i = 0; i < data.length; i+= 76) o.push(data.slice(i, i+76));
|
|
return o.join("\r\n") + "\r\n";
|
|
}
|
|
|
|
/*
|
|
Rules for QP:
|
|
- escape =## applies for all non-display characters and literal "="
|
|
- space or tab at end of line must be encoded
|
|
- \r\n newlines can be preserved, but bare \r and \n must be escaped
|
|
- lines must not exceed 76 characters, use soft breaks =\r\n
|
|
|
|
TODO: Some files from word appear to write line extensions with bare equals:
|
|
|
|
```
|
|
<table class=3DMsoTableGrid border=3D1 cellspacing=3D0 cellpadding=3D0 width=
|
|
="70%"
|
|
```
|
|
*/
|
|
function write_quoted_printable(text) {
|
|
var encoded = text.replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7E-\xFF=]/g, function(c) {
|
|
var w = c.charCodeAt(0).toString(16).toUpperCase();
|
|
return "=" + (w.length == 1 ? "0" + w : w);
|
|
});
|
|
|
|
encoded = encoded.replace(/ $/mg, "=20").replace(/\t$/mg, "=09");
|
|
|
|
if(encoded.charAt(0) == "\n") encoded = "=0D" + encoded.slice(1);
|
|
encoded = encoded.replace(/\r(?!\n)/mg, "=0D").replace(/\n\n/mg, "\n=0A").replace(/([^\r\n])\n/mg, "$1=0A");
|
|
|
|
var o = [], split = encoded.split("\r\n");
|
|
for(var si = 0; si < split.length; ++si) {
|
|
var str = split[si];
|
|
if(str.length == 0) { o.push(""); continue; }
|
|
for(var i = 0; i < str.length;) {
|
|
var end = 76;
|
|
var tmp = str.slice(i, i + end);
|
|
if(tmp.charAt(end - 1) == "=") end --;
|
|
else if(tmp.charAt(end - 2) == "=") end -= 2;
|
|
else if(tmp.charAt(end - 3) == "=") end -= 3;
|
|
tmp = str.slice(i, i + end);
|
|
i += end;
|
|
if(i < str.length) tmp += "=";
|
|
o.push(tmp);
|
|
}
|
|
}
|
|
|
|
return o.join("\r\n");
|
|
}
|
|
function parse_quoted_printable(data) {
|
|
var o = [];
|
|
|
|
/* unify long lines */
|
|
for(var di = 0; di < data.length; ++di) {
|
|
var line = data[di];
|
|
while(di <= data.length && line.charAt(line.length - 1) == "=") line = line.slice(0, line.length - 1) + data[++di];
|
|
o.push(line);
|
|
}
|
|
|
|
/* decode */
|
|
for(var oi = 0; oi < o.length; ++oi) o[oi] = o[oi].replace(/[=][0-9A-Fa-f]{2}/g, function($$) { return String.fromCharCode(parseInt($$.slice(1), 16)); });
|
|
return s2a(o.join("\r\n"));
|
|
}
|
|
|
|
|
|
function parse_mime(cfb, data, root) {
|
|
var fname = "", cte = "", ctype = "", fdata;
|
|
var di = 0;
|
|
for(;di < 10; ++di) {
|
|
var line = data[di];
|
|
if(!line || line.match(/^\s*$/)) break;
|
|
var m = line.match(/^(.*?):\s*([^\s].*)$/);
|
|
if(m) switch(m[1].toLowerCase()) {
|
|
case "content-location": fname = m[2].trim(); break;
|
|
case "content-type": ctype = m[2].trim(); break;
|
|
case "content-transfer-encoding": cte = m[2].trim(); break;
|
|
}
|
|
}
|
|
++di;
|
|
switch(cte.toLowerCase()) {
|
|
case 'base64': fdata = s2a(Base64_decode(data.slice(di).join(""))); break;
|
|
case 'quoted-printable': fdata = parse_quoted_printable(data.slice(di)); break;
|
|
default: throw new Error("Unsupported Content-Transfer-Encoding " + cte);
|
|
}
|
|
var file = cfb_add(cfb, fname.slice(root.length), fdata, {unsafe: true});
|
|
if(ctype) file.ctype = ctype;
|
|
}
|
|
|
|
function parse_mad(file, options) {
|
|
if(a2s(file.slice(0,13)).toLowerCase() != "mime-version:") throw new Error("Unsupported MAD header");
|
|
var root = (options && options.root || "");
|
|
// $FlowIgnore
|
|
var data = (has_buf && Buffer.isBuffer(file) ? file.toString("binary") : a2s(file)).split("\r\n");
|
|
var di = 0, row = "";
|
|
|
|
/* if root is not specified, scan for the common prefix */
|
|
for(di = 0; di < data.length; ++di) {
|
|
row = data[di];
|
|
if(!/^Content-Location:/i.test(row)) continue;
|
|
row = row.slice(row.indexOf("file"));
|
|
if(!root) root = row.slice(0, row.lastIndexOf("/") + 1);
|
|
if(row.slice(0, root.length) == root) continue;
|
|
while(root.length > 0) {
|
|
root = root.slice(0, root.length - 1);
|
|
root = root.slice(0, root.lastIndexOf("/") + 1);
|
|
if(row.slice(0,root.length) == root) break;
|
|
}
|
|
}
|
|
|
|
var mboundary = (data[1] || "").match(/boundary="(.*?)"/);
|
|
if(!mboundary) throw new Error("MAD cannot find boundary");
|
|
var boundary = "--" + (mboundary[1] || "");
|
|
|
|
var FileIndex = [], FullPaths = [];
|
|
var o = {
|
|
FileIndex: FileIndex,
|
|
FullPaths: FullPaths
|
|
};
|
|
init_cfb(o);
|
|
var start_di, fcnt = 0;
|
|
for(di = 0; di < data.length; ++di) {
|
|
var line = data[di];
|
|
if(line !== boundary && line !== boundary + "--") continue;
|
|
if(fcnt++) parse_mime(o, data.slice(start_di, di), root);
|
|
start_di = di;
|
|
}
|
|
return o;
|
|
}
|
|
|
|
function write_mad(cfb, options) {
|
|
var opts = options || {};
|
|
var boundary = opts.boundary || "SheetJS";
|
|
boundary = '------=' + boundary;
|
|
|
|
var out = [
|
|
'MIME-Version: 1.0',
|
|
'Content-Type: multipart/related; boundary="' + boundary.slice(2) + '"',
|
|
'',
|
|
'',
|
|
''
|
|
];
|
|
|
|
var root = cfb.FullPaths[0], fp = root, fi = cfb.FileIndex[0];
|
|
for(var i = 1; i < cfb.FullPaths.length; ++i) {
|
|
fp = cfb.FullPaths[i].slice(root.length);
|
|
fi = cfb.FileIndex[i];
|
|
if(!fi.size || !fi.content || fp == "\u0001Sh33tJ5") continue;
|
|
|
|
/* Normalize filename */
|
|
fp = fp.replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7E-\xFF]/g, function(c) {
|
|
return "_x" + c.charCodeAt(0).toString(16) + "_";
|
|
}).replace(/[\u0080-\uFFFF]/g, function(u) {
|
|
return "_u" + u.charCodeAt(0).toString(16) + "_";
|
|
});
|
|
|
|
/* Extract content as binary string */
|
|
var ca = fi.content;
|
|
// $FlowIgnore
|
|
var cstr = has_buf && Buffer.isBuffer(ca) ? ca.toString("binary") : a2s(ca);
|
|
|
|
/* 4/5 of first 1024 chars ascii -> quoted printable, else base64 */
|
|
var dispcnt = 0, L = Math.min(1024, cstr.length), cc = 0;
|
|
for(var csl = 0; csl <= L; ++csl) if((cc=cstr.charCodeAt(csl)) >= 0x20 && cc < 0x80) ++dispcnt;
|
|
var qp = dispcnt >= L * 4 / 5;
|
|
|
|
out.push(boundary);
|
|
out.push('Content-Location: ' + (opts.root || 'file:///C:/SheetJS/') + fp);
|
|
out.push('Content-Transfer-Encoding: ' + (qp ? 'quoted-printable' : 'base64'));
|
|
out.push('Content-Type: ' + get_content_type(fi, fp));
|
|
out.push('');
|
|
|
|
out.push(qp ? write_quoted_printable(cstr) : write_base64_76(cstr));
|
|
}
|
|
out.push(boundary + '--\r\n');
|
|
return out.join("\r\n");
|
|
}
|
|
function cfb_new(opts) {
|
|
var o = ({});
|
|
init_cfb(o, opts);
|
|
return o;
|
|
}
|
|
|
|
function cfb_add(cfb, name, content, opts) {
|
|
var unsafe = opts && opts.unsafe;
|
|
if(!unsafe) init_cfb(cfb);
|
|
var file = !unsafe && CFB.find(cfb, name);
|
|
if(!file) {
|
|
var fpath = cfb.FullPaths[0];
|
|
if(name.slice(0, fpath.length) == fpath) fpath = name;
|
|
else {
|
|
if(fpath.slice(-1) != "/") fpath += "/";
|
|
fpath = (fpath + name).replace("//","/");
|
|
}
|
|
file = ({name: filename(name), type: 2});
|
|
cfb.FileIndex.push(file);
|
|
cfb.FullPaths.push(fpath);
|
|
if(!unsafe) CFB.utils.cfb_gc(cfb);
|
|
}
|
|
file.content = (content);
|
|
file.size = content ? content.length : 0;
|
|
if(opts) {
|
|
if(opts.CLSID) file.clsid = opts.CLSID;
|
|
if(opts.mt) file.mt = opts.mt;
|
|
if(opts.ct) file.ct = opts.ct;
|
|
}
|
|
return file;
|
|
}
|
|
|
|
function cfb_del(cfb, name) {
|
|
init_cfb(cfb);
|
|
var file = CFB.find(cfb, name);
|
|
if(file) for(var j = 0; j < cfb.FileIndex.length; ++j) if(cfb.FileIndex[j] == file) {
|
|
cfb.FileIndex.splice(j, 1);
|
|
cfb.FullPaths.splice(j, 1);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function cfb_mov(cfb, old_name, new_name) {
|
|
init_cfb(cfb);
|
|
var file = CFB.find(cfb, old_name);
|
|
if(file) for(var j = 0; j < cfb.FileIndex.length; ++j) if(cfb.FileIndex[j] == file) {
|
|
cfb.FileIndex[j].name = filename(new_name);
|
|
cfb.FullPaths[j] = new_name;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function cfb_gc(cfb) { rebuild_cfb(cfb, true); }
|
|
|
|
exports.find = find;
|
|
exports.read = read;
|
|
exports.parse = parse;
|
|
exports.write = write;
|
|
exports.writeFile = write_file;
|
|
exports.utils = {
|
|
cfb_new: cfb_new,
|
|
cfb_add: cfb_add,
|
|
cfb_del: cfb_del,
|
|
cfb_mov: cfb_mov,
|
|
cfb_gc: cfb_gc,
|
|
ReadShift: ReadShift,
|
|
CheckField: CheckField,
|
|
prep_blob: prep_blob,
|
|
bconcat: bconcat,
|
|
use_zlib: use_zlib,
|
|
_deflateRaw: _deflate,
|
|
_inflateRaw: _inflate,
|
|
consts: consts
|
|
};
|
|
|
|
return exports;
|
|
})();
|
|
|
|
if(typeof require !== 'undefined' && typeof module !== 'undefined' && typeof DO_NOT_EXPORT_CFB === 'undefined') { module.exports = CFB; }
|
|
|
|
}).call(this)}).call(this,require('_process'),require("buffer").Buffer)
|
|
},{"_process":8,"buffer":6,"fs":5}],2:[function(require,module,exports){
|
|
(function (global){(function (){
|
|
var cfb = require('cfb')
|
|
const fs = require('fs');
|
|
|
|
global.window.cfb = cfb
|
|
|
|
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"cfb":1,"fs":3}],3:[function(require,module,exports){
|
|
|
|
},{}],4:[function(require,module,exports){
|
|
'use strict'
|
|
|
|
exports.byteLength = byteLength
|
|
exports.toByteArray = toByteArray
|
|
exports.fromByteArray = fromByteArray
|
|
|
|
var lookup = []
|
|
var revLookup = []
|
|
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
|
|
|
|
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
|
|
for (var i = 0, len = code.length; i < len; ++i) {
|
|
lookup[i] = code[i]
|
|
revLookup[code.charCodeAt(i)] = i
|
|
}
|
|
|
|
// Support decoding URL-safe base64 strings, as Node.js does.
|
|
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
|
|
revLookup['-'.charCodeAt(0)] = 62
|
|
revLookup['_'.charCodeAt(0)] = 63
|
|
|
|
function getLens (b64) {
|
|
var len = b64.length
|
|
|
|
if (len % 4 > 0) {
|
|
throw new Error('Invalid string. Length must be a multiple of 4')
|
|
}
|
|
|
|
// Trim off extra bytes after placeholder bytes are found
|
|
// See: https://github.com/beatgammit/base64-js/issues/42
|
|
var validLen = b64.indexOf('=')
|
|
if (validLen === -1) validLen = len
|
|
|
|
var placeHoldersLen = validLen === len
|
|
? 0
|
|
: 4 - (validLen % 4)
|
|
|
|
return [validLen, placeHoldersLen]
|
|
}
|
|
|
|
// base64 is 4/3 + up to two characters of the original data
|
|
function byteLength (b64) {
|
|
var lens = getLens(b64)
|
|
var validLen = lens[0]
|
|
var placeHoldersLen = lens[1]
|
|
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
|
|
}
|
|
|
|
function _byteLength (b64, validLen, placeHoldersLen) {
|
|
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
|
|
}
|
|
|
|
function toByteArray (b64) {
|
|
var tmp
|
|
var lens = getLens(b64)
|
|
var validLen = lens[0]
|
|
var placeHoldersLen = lens[1]
|
|
|
|
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
|
|
|
|
var curByte = 0
|
|
|
|
// if there are placeholders, only get up to the last complete 4 chars
|
|
var len = placeHoldersLen > 0
|
|
? validLen - 4
|
|
: validLen
|
|
|
|
var i
|
|
for (i = 0; i < len; i += 4) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 18) |
|
|
(revLookup[b64.charCodeAt(i + 1)] << 12) |
|
|
(revLookup[b64.charCodeAt(i + 2)] << 6) |
|
|
revLookup[b64.charCodeAt(i + 3)]
|
|
arr[curByte++] = (tmp >> 16) & 0xFF
|
|
arr[curByte++] = (tmp >> 8) & 0xFF
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
if (placeHoldersLen === 2) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 2) |
|
|
(revLookup[b64.charCodeAt(i + 1)] >> 4)
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
if (placeHoldersLen === 1) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 10) |
|
|
(revLookup[b64.charCodeAt(i + 1)] << 4) |
|
|
(revLookup[b64.charCodeAt(i + 2)] >> 2)
|
|
arr[curByte++] = (tmp >> 8) & 0xFF
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
return arr
|
|
}
|
|
|
|
function tripletToBase64 (num) {
|
|
return lookup[num >> 18 & 0x3F] +
|
|
lookup[num >> 12 & 0x3F] +
|
|
lookup[num >> 6 & 0x3F] +
|
|
lookup[num & 0x3F]
|
|
}
|
|
|
|
function encodeChunk (uint8, start, end) {
|
|
var tmp
|
|
var output = []
|
|
for (var i = start; i < end; i += 3) {
|
|
tmp =
|
|
((uint8[i] << 16) & 0xFF0000) +
|
|
((uint8[i + 1] << 8) & 0xFF00) +
|
|
(uint8[i + 2] & 0xFF)
|
|
output.push(tripletToBase64(tmp))
|
|
}
|
|
return output.join('')
|
|
}
|
|
|
|
function fromByteArray (uint8) {
|
|
var tmp
|
|
var len = uint8.length
|
|
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
|
|
var parts = []
|
|
var maxChunkLength = 16383 // must be multiple of 3
|
|
|
|
// go through the array every three bytes, we'll deal with trailing stuff later
|
|
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
|
|
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
|
|
}
|
|
|
|
// pad the end with zeros, but make sure to not forget the extra bytes
|
|
if (extraBytes === 1) {
|
|
tmp = uint8[len - 1]
|
|
parts.push(
|
|
lookup[tmp >> 2] +
|
|
lookup[(tmp << 4) & 0x3F] +
|
|
'=='
|
|
)
|
|
} else if (extraBytes === 2) {
|
|
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
|
|
parts.push(
|
|
lookup[tmp >> 10] +
|
|
lookup[(tmp >> 4) & 0x3F] +
|
|
lookup[(tmp << 2) & 0x3F] +
|
|
'='
|
|
)
|
|
}
|
|
|
|
return parts.join('')
|
|
}
|
|
|
|
},{}],5:[function(require,module,exports){
|
|
arguments[4][3][0].apply(exports,arguments)
|
|
},{"dup":3}],6:[function(require,module,exports){
|
|
(function (Buffer){(function (){
|
|
/*!
|
|
* The buffer module from node.js, for the browser.
|
|
*
|
|
* @author Feross Aboukhadijeh <https://feross.org>
|
|
* @license MIT
|
|
*/
|
|
/* eslint-disable no-proto */
|
|
|
|
'use strict'
|
|
|
|
var base64 = require('base64-js')
|
|
var ieee754 = require('ieee754')
|
|
|
|
exports.Buffer = Buffer
|
|
exports.SlowBuffer = SlowBuffer
|
|
exports.INSPECT_MAX_BYTES = 50
|
|
|
|
var K_MAX_LENGTH = 0x7fffffff
|
|
exports.kMaxLength = K_MAX_LENGTH
|
|
|
|
/**
|
|
* If `Buffer.TYPED_ARRAY_SUPPORT`:
|
|
* === true Use Uint8Array implementation (fastest)
|
|
* === false Print warning and recommend using `buffer` v4.x which has an Object
|
|
* implementation (most compatible, even IE6)
|
|
*
|
|
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
|
|
* Opera 11.6+, iOS 4.2+.
|
|
*
|
|
* We report that the browser does not support typed arrays if the are not subclassable
|
|
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
|
|
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
|
|
* for __proto__ and has a buggy typed array implementation.
|
|
*/
|
|
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
|
|
|
|
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
|
|
typeof console.error === 'function') {
|
|
console.error(
|
|
'This browser lacks typed array (Uint8Array) support which is required by ' +
|
|
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
|
|
)
|
|
}
|
|
|
|
function typedArraySupport () {
|
|
// Can typed array instances can be augmented?
|
|
try {
|
|
var arr = new Uint8Array(1)
|
|
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
|
|
return arr.foo() === 42
|
|
} catch (e) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
Object.defineProperty(Buffer.prototype, 'parent', {
|
|
enumerable: true,
|
|
get: function () {
|
|
if (!Buffer.isBuffer(this)) return undefined
|
|
return this.buffer
|
|
}
|
|
})
|
|
|
|
Object.defineProperty(Buffer.prototype, 'offset', {
|
|
enumerable: true,
|
|
get: function () {
|
|
if (!Buffer.isBuffer(this)) return undefined
|
|
return this.byteOffset
|
|
}
|
|
})
|
|
|
|
function createBuffer (length) {
|
|
if (length > K_MAX_LENGTH) {
|
|
throw new RangeError('The value "' + length + '" is invalid for option "size"')
|
|
}
|
|
// Return an augmented `Uint8Array` instance
|
|
var buf = new Uint8Array(length)
|
|
buf.__proto__ = Buffer.prototype
|
|
return buf
|
|
}
|
|
|
|
/**
|
|
* The Buffer constructor returns instances of `Uint8Array` that have their
|
|
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
|
|
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
|
|
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
|
|
* returns a single octet.
|
|
*
|
|
* The `Uint8Array` prototype remains unmodified.
|
|
*/
|
|
|
|
function Buffer (arg, encodingOrOffset, length) {
|
|
// Common case.
|
|
if (typeof arg === 'number') {
|
|
if (typeof encodingOrOffset === 'string') {
|
|
throw new TypeError(
|
|
'The "string" argument must be of type string. Received type number'
|
|
)
|
|
}
|
|
return allocUnsafe(arg)
|
|
}
|
|
return from(arg, encodingOrOffset, length)
|
|
}
|
|
|
|
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
|
|
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
|
|
Buffer[Symbol.species] === Buffer) {
|
|
Object.defineProperty(Buffer, Symbol.species, {
|
|
value: null,
|
|
configurable: true,
|
|
enumerable: false,
|
|
writable: false
|
|
})
|
|
}
|
|
|
|
Buffer.poolSize = 8192 // not used by this implementation
|
|
|
|
function from (value, encodingOrOffset, length) {
|
|
if (typeof value === 'string') {
|
|
return fromString(value, encodingOrOffset)
|
|
}
|
|
|
|
if (ArrayBuffer.isView(value)) {
|
|
return fromArrayLike(value)
|
|
}
|
|
|
|
if (value == null) {
|
|
throw TypeError(
|
|
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
|
|
'or Array-like Object. Received type ' + (typeof value)
|
|
)
|
|
}
|
|
|
|
if (isInstance(value, ArrayBuffer) ||
|
|
(value && isInstance(value.buffer, ArrayBuffer))) {
|
|
return fromArrayBuffer(value, encodingOrOffset, length)
|
|
}
|
|
|
|
if (typeof value === 'number') {
|
|
throw new TypeError(
|
|
'The "value" argument must not be of type number. Received type number'
|
|
)
|
|
}
|
|
|
|
var valueOf = value.valueOf && value.valueOf()
|
|
if (valueOf != null && valueOf !== value) {
|
|
return Buffer.from(valueOf, encodingOrOffset, length)
|
|
}
|
|
|
|
var b = fromObject(value)
|
|
if (b) return b
|
|
|
|
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
|
|
typeof value[Symbol.toPrimitive] === 'function') {
|
|
return Buffer.from(
|
|
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
|
|
)
|
|
}
|
|
|
|
throw new TypeError(
|
|
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
|
|
'or Array-like Object. Received type ' + (typeof value)
|
|
)
|
|
}
|
|
|
|
/**
|
|
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
|
|
* if value is a number.
|
|
* Buffer.from(str[, encoding])
|
|
* Buffer.from(array)
|
|
* Buffer.from(buffer)
|
|
* Buffer.from(arrayBuffer[, byteOffset[, length]])
|
|
**/
|
|
Buffer.from = function (value, encodingOrOffset, length) {
|
|
return from(value, encodingOrOffset, length)
|
|
}
|
|
|
|
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
|
|
// https://github.com/feross/buffer/pull/148
|
|
Buffer.prototype.__proto__ = Uint8Array.prototype
|
|
Buffer.__proto__ = Uint8Array
|
|
|
|
function assertSize (size) {
|
|
if (typeof size !== 'number') {
|
|
throw new TypeError('"size" argument must be of type number')
|
|
} else if (size < 0) {
|
|
throw new RangeError('The value "' + size + '" is invalid for option "size"')
|
|
}
|
|
}
|
|
|
|
function alloc (size, fill, encoding) {
|
|
assertSize(size)
|
|
if (size <= 0) {
|
|
return createBuffer(size)
|
|
}
|
|
if (fill !== undefined) {
|
|
// Only pay attention to encoding if it's a string. This
|
|
// prevents accidentally sending in a number that would
|
|
// be interpretted as a start offset.
|
|
return typeof encoding === 'string'
|
|
? createBuffer(size).fill(fill, encoding)
|
|
: createBuffer(size).fill(fill)
|
|
}
|
|
return createBuffer(size)
|
|
}
|
|
|
|
/**
|
|
* Creates a new filled Buffer instance.
|
|
* alloc(size[, fill[, encoding]])
|
|
**/
|
|
Buffer.alloc = function (size, fill, encoding) {
|
|
return alloc(size, fill, encoding)
|
|
}
|
|
|
|
function allocUnsafe (size) {
|
|
assertSize(size)
|
|
return createBuffer(size < 0 ? 0 : checked(size) | 0)
|
|
}
|
|
|
|
/**
|
|
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
|
|
* */
|
|
Buffer.allocUnsafe = function (size) {
|
|
return allocUnsafe(size)
|
|
}
|
|
/**
|
|
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
|
|
*/
|
|
Buffer.allocUnsafeSlow = function (size) {
|
|
return allocUnsafe(size)
|
|
}
|
|
|
|
function fromString (string, encoding) {
|
|
if (typeof encoding !== 'string' || encoding === '') {
|
|
encoding = 'utf8'
|
|
}
|
|
|
|
if (!Buffer.isEncoding(encoding)) {
|
|
throw new TypeError('Unknown encoding: ' + encoding)
|
|
}
|
|
|
|
var length = byteLength(string, encoding) | 0
|
|
var buf = createBuffer(length)
|
|
|
|
var actual = buf.write(string, encoding)
|
|
|
|
if (actual !== length) {
|
|
// Writing a hex string, for example, that contains invalid characters will
|
|
// cause everything after the first invalid character to be ignored. (e.g.
|
|
// 'abxxcd' will be treated as 'ab')
|
|
buf = buf.slice(0, actual)
|
|
}
|
|
|
|
return buf
|
|
}
|
|
|
|
function fromArrayLike (array) {
|
|
var length = array.length < 0 ? 0 : checked(array.length) | 0
|
|
var buf = createBuffer(length)
|
|
for (var i = 0; i < length; i += 1) {
|
|
buf[i] = array[i] & 255
|
|
}
|
|
return buf
|
|
}
|
|
|
|
function fromArrayBuffer (array, byteOffset, length) {
|
|
if (byteOffset < 0 || array.byteLength < byteOffset) {
|
|
throw new RangeError('"offset" is outside of buffer bounds')
|
|
}
|
|
|
|
if (array.byteLength < byteOffset + (length || 0)) {
|
|
throw new RangeError('"length" is outside of buffer bounds')
|
|
}
|
|
|
|
var buf
|
|
if (byteOffset === undefined && length === undefined) {
|
|
buf = new Uint8Array(array)
|
|
} else if (length === undefined) {
|
|
buf = new Uint8Array(array, byteOffset)
|
|
} else {
|
|
buf = new Uint8Array(array, byteOffset, length)
|
|
}
|
|
|
|
// Return an augmented `Uint8Array` instance
|
|
buf.__proto__ = Buffer.prototype
|
|
return buf
|
|
}
|
|
|
|
function fromObject (obj) {
|
|
if (Buffer.isBuffer(obj)) {
|
|
var len = checked(obj.length) | 0
|
|
var buf = createBuffer(len)
|
|
|
|
if (buf.length === 0) {
|
|
return buf
|
|
}
|
|
|
|
obj.copy(buf, 0, 0, len)
|
|
return buf
|
|
}
|
|
|
|
if (obj.length !== undefined) {
|
|
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
|
|
return createBuffer(0)
|
|
}
|
|
return fromArrayLike(obj)
|
|
}
|
|
|
|
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
|
|
return fromArrayLike(obj.data)
|
|
}
|
|
}
|
|
|
|
function checked (length) {
|
|
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
|
|
// length is NaN (which is otherwise coerced to zero.)
|
|
if (length >= K_MAX_LENGTH) {
|
|
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
|
|
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
|
|
}
|
|
return length | 0
|
|
}
|
|
|
|
function SlowBuffer (length) {
|
|
if (+length != length) { // eslint-disable-line eqeqeq
|
|
length = 0
|
|
}
|
|
return Buffer.alloc(+length)
|
|
}
|
|
|
|
Buffer.isBuffer = function isBuffer (b) {
|
|
return b != null && b._isBuffer === true &&
|
|
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
|
|
}
|
|
|
|
Buffer.compare = function compare (a, b) {
|
|
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
|
|
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
|
|
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
|
|
throw new TypeError(
|
|
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
|
|
)
|
|
}
|
|
|
|
if (a === b) return 0
|
|
|
|
var x = a.length
|
|
var y = b.length
|
|
|
|
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
|
|
if (a[i] !== b[i]) {
|
|
x = a[i]
|
|
y = b[i]
|
|
break
|
|
}
|
|
}
|
|
|
|
if (x < y) return -1
|
|
if (y < x) return 1
|
|
return 0
|
|
}
|
|
|
|
Buffer.isEncoding = function isEncoding (encoding) {
|
|
switch (String(encoding).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 true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
Buffer.concat = function concat (list, length) {
|
|
if (!Array.isArray(list)) {
|
|
throw new TypeError('"list" argument must be an Array of Buffers')
|
|
}
|
|
|
|
if (list.length === 0) {
|
|
return Buffer.alloc(0)
|
|
}
|
|
|
|
var i
|
|
if (length === undefined) {
|
|
length = 0
|
|
for (i = 0; i < list.length; ++i) {
|
|
length += list[i].length
|
|
}
|
|
}
|
|
|
|
var buffer = Buffer.allocUnsafe(length)
|
|
var pos = 0
|
|
for (i = 0; i < list.length; ++i) {
|
|
var buf = list[i]
|
|
if (isInstance(buf, Uint8Array)) {
|
|
buf = Buffer.from(buf)
|
|
}
|
|
if (!Buffer.isBuffer(buf)) {
|
|
throw new TypeError('"list" argument must be an Array of Buffers')
|
|
}
|
|
buf.copy(buffer, pos)
|
|
pos += buf.length
|
|
}
|
|
return buffer
|
|
}
|
|
|
|
function byteLength (string, encoding) {
|
|
if (Buffer.isBuffer(string)) {
|
|
return string.length
|
|
}
|
|
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
|
|
return string.byteLength
|
|
}
|
|
if (typeof string !== 'string') {
|
|
throw new TypeError(
|
|
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
|
|
'Received type ' + typeof string
|
|
)
|
|
}
|
|
|
|
var len = string.length
|
|
var mustMatch = (arguments.length > 2 && arguments[2] === true)
|
|
if (!mustMatch && len === 0) return 0
|
|
|
|
// Use a for loop to avoid recursion
|
|
var loweredCase = false
|
|
for (;;) {
|
|
switch (encoding) {
|
|
case 'ascii':
|
|
case 'latin1':
|
|
case 'binary':
|
|
return len
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8ToBytes(string).length
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return len * 2
|
|
case 'hex':
|
|
return len >>> 1
|
|
case 'base64':
|
|
return base64ToBytes(string).length
|
|
default:
|
|
if (loweredCase) {
|
|
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
|
|
}
|
|
encoding = ('' + encoding).toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
Buffer.byteLength = byteLength
|
|
|
|
function slowToString (encoding, start, end) {
|
|
var loweredCase = false
|
|
|
|
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
|
|
// property of a typed array.
|
|
|
|
// This behaves neither like String nor Uint8Array in that we set start/end
|
|
// to their upper/lower bounds if the value passed is out of range.
|
|
// undefined is handled specially as per ECMA-262 6th Edition,
|
|
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
|
|
if (start === undefined || start < 0) {
|
|
start = 0
|
|
}
|
|
// Return early if start > this.length. Done here to prevent potential uint32
|
|
// coercion fail below.
|
|
if (start > this.length) {
|
|
return ''
|
|
}
|
|
|
|
if (end === undefined || end > this.length) {
|
|
end = this.length
|
|
}
|
|
|
|
if (end <= 0) {
|
|
return ''
|
|
}
|
|
|
|
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
|
|
end >>>= 0
|
|
start >>>= 0
|
|
|
|
if (end <= start) {
|
|
return ''
|
|
}
|
|
|
|
if (!encoding) encoding = 'utf8'
|
|
|
|
while (true) {
|
|
switch (encoding) {
|
|
case 'hex':
|
|
return hexSlice(this, start, end)
|
|
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8Slice(this, start, end)
|
|
|
|
case 'ascii':
|
|
return asciiSlice(this, start, end)
|
|
|
|
case 'latin1':
|
|
case 'binary':
|
|
return latin1Slice(this, start, end)
|
|
|
|
case 'base64':
|
|
return base64Slice(this, start, end)
|
|
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return utf16leSlice(this, start, end)
|
|
|
|
default:
|
|
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
|
encoding = (encoding + '').toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
|
|
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
|
|
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
|
|
// reliably in a browserify context because there could be multiple different
|
|
// copies of the 'buffer' package in use. This method works even for Buffer
|
|
// instances that were created from another copy of the `buffer` package.
|
|
// See: https://github.com/feross/buffer/issues/154
|
|
Buffer.prototype._isBuffer = true
|
|
|
|
function swap (b, n, m) {
|
|
var i = b[n]
|
|
b[n] = b[m]
|
|
b[m] = i
|
|
}
|
|
|
|
Buffer.prototype.swap16 = function swap16 () {
|
|
var len = this.length
|
|
if (len % 2 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 16-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 2) {
|
|
swap(this, i, i + 1)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.swap32 = function swap32 () {
|
|
var len = this.length
|
|
if (len % 4 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 32-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 4) {
|
|
swap(this, i, i + 3)
|
|
swap(this, i + 1, i + 2)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.swap64 = function swap64 () {
|
|
var len = this.length
|
|
if (len % 8 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 64-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 8) {
|
|
swap(this, i, i + 7)
|
|
swap(this, i + 1, i + 6)
|
|
swap(this, i + 2, i + 5)
|
|
swap(this, i + 3, i + 4)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.toString = function toString () {
|
|
var length = this.length
|
|
if (length === 0) return ''
|
|
if (arguments.length === 0) return utf8Slice(this, 0, length)
|
|
return slowToString.apply(this, arguments)
|
|
}
|
|
|
|
Buffer.prototype.toLocaleString = Buffer.prototype.toString
|
|
|
|
Buffer.prototype.equals = function equals (b) {
|
|
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
|
|
if (this === b) return true
|
|
return Buffer.compare(this, b) === 0
|
|
}
|
|
|
|
Buffer.prototype.inspect = function inspect () {
|
|
var str = ''
|
|
var max = exports.INSPECT_MAX_BYTES
|
|
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
|
|
if (this.length > max) str += ' ... '
|
|
return '<Buffer ' + str + '>'
|
|
}
|
|
|
|
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
|
|
if (isInstance(target, Uint8Array)) {
|
|
target = Buffer.from(target, target.offset, target.byteLength)
|
|
}
|
|
if (!Buffer.isBuffer(target)) {
|
|
throw new TypeError(
|
|
'The "target" argument must be one of type Buffer or Uint8Array. ' +
|
|
'Received type ' + (typeof target)
|
|
)
|
|
}
|
|
|
|
if (start === undefined) {
|
|
start = 0
|
|
}
|
|
if (end === undefined) {
|
|
end = target ? target.length : 0
|
|
}
|
|
if (thisStart === undefined) {
|
|
thisStart = 0
|
|
}
|
|
if (thisEnd === undefined) {
|
|
thisEnd = this.length
|
|
}
|
|
|
|
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
|
|
throw new RangeError('out of range index')
|
|
}
|
|
|
|
if (thisStart >= thisEnd && start >= end) {
|
|
return 0
|
|
}
|
|
if (thisStart >= thisEnd) {
|
|
return -1
|
|
}
|
|
if (start >= end) {
|
|
return 1
|
|
}
|
|
|
|
start >>>= 0
|
|
end >>>= 0
|
|
thisStart >>>= 0
|
|
thisEnd >>>= 0
|
|
|
|
if (this === target) return 0
|
|
|
|
var x = thisEnd - thisStart
|
|
var y = end - start
|
|
var len = Math.min(x, y)
|
|
|
|
var thisCopy = this.slice(thisStart, thisEnd)
|
|
var targetCopy = target.slice(start, end)
|
|
|
|
for (var i = 0; i < len; ++i) {
|
|
if (thisCopy[i] !== targetCopy[i]) {
|
|
x = thisCopy[i]
|
|
y = targetCopy[i]
|
|
break
|
|
}
|
|
}
|
|
|
|
if (x < y) return -1
|
|
if (y < x) return 1
|
|
return 0
|
|
}
|
|
|
|
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
|
|
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
|
|
//
|
|
// Arguments:
|
|
// - buffer - a Buffer to search
|
|
// - val - a string, Buffer, or number
|
|
// - byteOffset - an index into `buffer`; will be clamped to an int32
|
|
// - encoding - an optional encoding, relevant is val is a string
|
|
// - dir - true for indexOf, false for lastIndexOf
|
|
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
|
|
// Empty buffer means no match
|
|
if (buffer.length === 0) return -1
|
|
|
|
// Normalize byteOffset
|
|
if (typeof byteOffset === 'string') {
|
|
encoding = byteOffset
|
|
byteOffset = 0
|
|
} else if (byteOffset > 0x7fffffff) {
|
|
byteOffset = 0x7fffffff
|
|
} else if (byteOffset < -0x80000000) {
|
|
byteOffset = -0x80000000
|
|
}
|
|
byteOffset = +byteOffset // Coerce to Number.
|
|
if (numberIsNaN(byteOffset)) {
|
|
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
|
|
byteOffset = dir ? 0 : (buffer.length - 1)
|
|
}
|
|
|
|
// Normalize byteOffset: negative offsets start from the end of the buffer
|
|
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
|
|
if (byteOffset >= buffer.length) {
|
|
if (dir) return -1
|
|
else byteOffset = buffer.length - 1
|
|
} else if (byteOffset < 0) {
|
|
if (dir) byteOffset = 0
|
|
else return -1
|
|
}
|
|
|
|
// Normalize val
|
|
if (typeof val === 'string') {
|
|
val = Buffer.from(val, encoding)
|
|
}
|
|
|
|
// Finally, search either indexOf (if dir is true) or lastIndexOf
|
|
if (Buffer.isBuffer(val)) {
|
|
// Special case: looking for empty string/buffer always fails
|
|
if (val.length === 0) {
|
|
return -1
|
|
}
|
|
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
|
|
} else if (typeof val === 'number') {
|
|
val = val & 0xFF // Search for a byte value [0-255]
|
|
if (typeof Uint8Array.prototype.indexOf === 'function') {
|
|
if (dir) {
|
|
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
|
|
} else {
|
|
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
|
|
}
|
|
}
|
|
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
|
|
}
|
|
|
|
throw new TypeError('val must be string, number or Buffer')
|
|
}
|
|
|
|
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
|
|
var indexSize = 1
|
|
var arrLength = arr.length
|
|
var valLength = val.length
|
|
|
|
if (encoding !== undefined) {
|
|
encoding = String(encoding).toLowerCase()
|
|
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
|
|
encoding === 'utf16le' || encoding === 'utf-16le') {
|
|
if (arr.length < 2 || val.length < 2) {
|
|
return -1
|
|
}
|
|
indexSize = 2
|
|
arrLength /= 2
|
|
valLength /= 2
|
|
byteOffset /= 2
|
|
}
|
|
}
|
|
|
|
function read (buf, i) {
|
|
if (indexSize === 1) {
|
|
return buf[i]
|
|
} else {
|
|
return buf.readUInt16BE(i * indexSize)
|
|
}
|
|
}
|
|
|
|
var i
|
|
if (dir) {
|
|
var foundIndex = -1
|
|
for (i = byteOffset; i < arrLength; i++) {
|
|
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
|
|
if (foundIndex === -1) foundIndex = i
|
|
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
|
|
} else {
|
|
if (foundIndex !== -1) i -= i - foundIndex
|
|
foundIndex = -1
|
|
}
|
|
}
|
|
} else {
|
|
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
|
|
for (i = byteOffset; i >= 0; i--) {
|
|
var found = true
|
|
for (var j = 0; j < valLength; j++) {
|
|
if (read(arr, i + j) !== read(val, j)) {
|
|
found = false
|
|
break
|
|
}
|
|
}
|
|
if (found) return i
|
|
}
|
|
}
|
|
|
|
return -1
|
|
}
|
|
|
|
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
|
|
return this.indexOf(val, byteOffset, encoding) !== -1
|
|
}
|
|
|
|
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
|
|
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
|
|
}
|
|
|
|
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
|
|
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
|
|
}
|
|
|
|
function hexWrite (buf, string, offset, length) {
|
|
offset = Number(offset) || 0
|
|
var remaining = buf.length - offset
|
|
if (!length) {
|
|
length = remaining
|
|
} else {
|
|
length = Number(length)
|
|
if (length > remaining) {
|
|
length = remaining
|
|
}
|
|
}
|
|
|
|
var strLen = string.length
|
|
|
|
if (length > strLen / 2) {
|
|
length = strLen / 2
|
|
}
|
|
for (var i = 0; i < length; ++i) {
|
|
var parsed = parseInt(string.substr(i * 2, 2), 16)
|
|
if (numberIsNaN(parsed)) return i
|
|
buf[offset + i] = parsed
|
|
}
|
|
return i
|
|
}
|
|
|
|
function utf8Write (buf, string, offset, length) {
|
|
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
|
|
}
|
|
|
|
function asciiWrite (buf, string, offset, length) {
|
|
return blitBuffer(asciiToBytes(string), buf, offset, length)
|
|
}
|
|
|
|
function latin1Write (buf, string, offset, length) {
|
|
return asciiWrite(buf, string, offset, length)
|
|
}
|
|
|
|
function base64Write (buf, string, offset, length) {
|
|
return blitBuffer(base64ToBytes(string), buf, offset, length)
|
|
}
|
|
|
|
function ucs2Write (buf, string, offset, length) {
|
|
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
|
|
}
|
|
|
|
Buffer.prototype.write = function write (string, offset, length, encoding) {
|
|
// Buffer#write(string)
|
|
if (offset === undefined) {
|
|
encoding = 'utf8'
|
|
length = this.length
|
|
offset = 0
|
|
// Buffer#write(string, encoding)
|
|
} else if (length === undefined && typeof offset === 'string') {
|
|
encoding = offset
|
|
length = this.length
|
|
offset = 0
|
|
// Buffer#write(string, offset[, length][, encoding])
|
|
} else if (isFinite(offset)) {
|
|
offset = offset >>> 0
|
|
if (isFinite(length)) {
|
|
length = length >>> 0
|
|
if (encoding === undefined) encoding = 'utf8'
|
|
} else {
|
|
encoding = length
|
|
length = undefined
|
|
}
|
|
} else {
|
|
throw new Error(
|
|
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
|
|
)
|
|
}
|
|
|
|
var remaining = this.length - offset
|
|
if (length === undefined || length > remaining) length = remaining
|
|
|
|
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
|
|
throw new RangeError('Attempt to write outside buffer bounds')
|
|
}
|
|
|
|
if (!encoding) encoding = 'utf8'
|
|
|
|
var loweredCase = false
|
|
for (;;) {
|
|
switch (encoding) {
|
|
case 'hex':
|
|
return hexWrite(this, string, offset, length)
|
|
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8Write(this, string, offset, length)
|
|
|
|
case 'ascii':
|
|
return asciiWrite(this, string, offset, length)
|
|
|
|
case 'latin1':
|
|
case 'binary':
|
|
return latin1Write(this, string, offset, length)
|
|
|
|
case 'base64':
|
|
// Warning: maxLength not taken into account in base64Write
|
|
return base64Write(this, string, offset, length)
|
|
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return ucs2Write(this, string, offset, length)
|
|
|
|
default:
|
|
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
|
encoding = ('' + encoding).toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
|
|
Buffer.prototype.toJSON = function toJSON () {
|
|
return {
|
|
type: 'Buffer',
|
|
data: Array.prototype.slice.call(this._arr || this, 0)
|
|
}
|
|
}
|
|
|
|
function base64Slice (buf, start, end) {
|
|
if (start === 0 && end === buf.length) {
|
|
return base64.fromByteArray(buf)
|
|
} else {
|
|
return base64.fromByteArray(buf.slice(start, end))
|
|
}
|
|
}
|
|
|
|
function utf8Slice (buf, start, end) {
|
|
end = Math.min(buf.length, end)
|
|
var res = []
|
|
|
|
var i = start
|
|
while (i < end) {
|
|
var firstByte = buf[i]
|
|
var codePoint = null
|
|
var bytesPerSequence = (firstByte > 0xEF) ? 4
|
|
: (firstByte > 0xDF) ? 3
|
|
: (firstByte > 0xBF) ? 2
|
|
: 1
|
|
|
|
if (i + bytesPerSequence <= end) {
|
|
var secondByte, thirdByte, fourthByte, tempCodePoint
|
|
|
|
switch (bytesPerSequence) {
|
|
case 1:
|
|
if (firstByte < 0x80) {
|
|
codePoint = firstByte
|
|
}
|
|
break
|
|
case 2:
|
|
secondByte = buf[i + 1]
|
|
if ((secondByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
|
|
if (tempCodePoint > 0x7F) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
break
|
|
case 3:
|
|
secondByte = buf[i + 1]
|
|
thirdByte = buf[i + 2]
|
|
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
|
|
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
break
|
|
case 4:
|
|
secondByte = buf[i + 1]
|
|
thirdByte = buf[i + 2]
|
|
fourthByte = buf[i + 3]
|
|
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
|
|
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (codePoint === null) {
|
|
// we did not generate a valid codePoint so insert a
|
|
// replacement char (U+FFFD) and advance only 1 byte
|
|
codePoint = 0xFFFD
|
|
bytesPerSequence = 1
|
|
} else if (codePoint > 0xFFFF) {
|
|
// encode to utf16 (surrogate pair dance)
|
|
codePoint -= 0x10000
|
|
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
|
|
codePoint = 0xDC00 | codePoint & 0x3FF
|
|
}
|
|
|
|
res.push(codePoint)
|
|
i += bytesPerSequence
|
|
}
|
|
|
|
return decodeCodePointsArray(res)
|
|
}
|
|
|
|
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
|
|
// the lowest limit is Chrome, with 0x10000 args.
|
|
// We go 1 magnitude less, for safety
|
|
var MAX_ARGUMENTS_LENGTH = 0x1000
|
|
|
|
function decodeCodePointsArray (codePoints) {
|
|
var len = codePoints.length
|
|
if (len <= MAX_ARGUMENTS_LENGTH) {
|
|
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
|
|
}
|
|
|
|
// Decode in chunks to avoid "call stack size exceeded".
|
|
var res = ''
|
|
var i = 0
|
|
while (i < len) {
|
|
res += String.fromCharCode.apply(
|
|
String,
|
|
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
|
|
)
|
|
}
|
|
return res
|
|
}
|
|
|
|
function asciiSlice (buf, start, end) {
|
|
var ret = ''
|
|
end = Math.min(buf.length, end)
|
|
|
|
for (var i = start; i < end; ++i) {
|
|
ret += String.fromCharCode(buf[i] & 0x7F)
|
|
}
|
|
return ret
|
|
}
|
|
|
|
function latin1Slice (buf, start, end) {
|
|
var ret = ''
|
|
end = Math.min(buf.length, end)
|
|
|
|
for (var i = start; i < end; ++i) {
|
|
ret += String.fromCharCode(buf[i])
|
|
}
|
|
return ret
|
|
}
|
|
|
|
function hexSlice (buf, start, end) {
|
|
var len = buf.length
|
|
|
|
if (!start || start < 0) start = 0
|
|
if (!end || end < 0 || end > len) end = len
|
|
|
|
var out = ''
|
|
for (var i = start; i < end; ++i) {
|
|
out += toHex(buf[i])
|
|
}
|
|
return out
|
|
}
|
|
|
|
function utf16leSlice (buf, start, end) {
|
|
var bytes = buf.slice(start, end)
|
|
var res = ''
|
|
for (var i = 0; i < bytes.length; i += 2) {
|
|
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
|
|
}
|
|
return res
|
|
}
|
|
|
|
Buffer.prototype.slice = function slice (start, end) {
|
|
var len = this.length
|
|
start = ~~start
|
|
end = end === undefined ? len : ~~end
|
|
|
|
if (start < 0) {
|
|
start += len
|
|
if (start < 0) start = 0
|
|
} else if (start > len) {
|
|
start = len
|
|
}
|
|
|
|
if (end < 0) {
|
|
end += len
|
|
if (end < 0) end = 0
|
|
} else if (end > len) {
|
|
end = len
|
|
}
|
|
|
|
if (end < start) end = start
|
|
|
|
var newBuf = this.subarray(start, end)
|
|
// Return an augmented `Uint8Array` instance
|
|
newBuf.__proto__ = Buffer.prototype
|
|
return newBuf
|
|
}
|
|
|
|
/*
|
|
* Need to make sure that buffer isn't trying to write out of bounds.
|
|
*/
|
|
function checkOffset (offset, ext, length) {
|
|
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
|
|
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
|
|
}
|
|
|
|
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var val = this[offset]
|
|
var mul = 1
|
|
var i = 0
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
val += this[offset + i] * mul
|
|
}
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
checkOffset(offset, byteLength, this.length)
|
|
}
|
|
|
|
var val = this[offset + --byteLength]
|
|
var mul = 1
|
|
while (byteLength > 0 && (mul *= 0x100)) {
|
|
val += this[offset + --byteLength] * mul
|
|
}
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 1, this.length)
|
|
return this[offset]
|
|
}
|
|
|
|
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return this[offset] | (this[offset + 1] << 8)
|
|
}
|
|
|
|
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return (this[offset] << 8) | this[offset + 1]
|
|
}
|
|
|
|
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return ((this[offset]) |
|
|
(this[offset + 1] << 8) |
|
|
(this[offset + 2] << 16)) +
|
|
(this[offset + 3] * 0x1000000)
|
|
}
|
|
|
|
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset] * 0x1000000) +
|
|
((this[offset + 1] << 16) |
|
|
(this[offset + 2] << 8) |
|
|
this[offset + 3])
|
|
}
|
|
|
|
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var val = this[offset]
|
|
var mul = 1
|
|
var i = 0
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
val += this[offset + i] * mul
|
|
}
|
|
mul *= 0x80
|
|
|
|
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var i = byteLength
|
|
var mul = 1
|
|
var val = this[offset + --i]
|
|
while (i > 0 && (mul *= 0x100)) {
|
|
val += this[offset + --i] * mul
|
|
}
|
|
mul *= 0x80
|
|
|
|
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 1, this.length)
|
|
if (!(this[offset] & 0x80)) return (this[offset])
|
|
return ((0xff - this[offset] + 1) * -1)
|
|
}
|
|
|
|
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
var val = this[offset] | (this[offset + 1] << 8)
|
|
return (val & 0x8000) ? val | 0xFFFF0000 : val
|
|
}
|
|
|
|
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
var val = this[offset + 1] | (this[offset] << 8)
|
|
return (val & 0x8000) ? val | 0xFFFF0000 : val
|
|
}
|
|
|
|
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset]) |
|
|
(this[offset + 1] << 8) |
|
|
(this[offset + 2] << 16) |
|
|
(this[offset + 3] << 24)
|
|
}
|
|
|
|
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset] << 24) |
|
|
(this[offset + 1] << 16) |
|
|
(this[offset + 2] << 8) |
|
|
(this[offset + 3])
|
|
}
|
|
|
|
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, true, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, false, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 8, this.length)
|
|
return ieee754.read(this, offset, true, 52, 8)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 8, this.length)
|
|
return ieee754.read(this, offset, false, 52, 8)
|
|
}
|
|
|
|
function checkInt (buf, value, offset, ext, max, min) {
|
|
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
|
|
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
|
|
if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
|
}
|
|
|
|
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
|
checkInt(this, value, offset, byteLength, maxBytes, 0)
|
|
}
|
|
|
|
var mul = 1
|
|
var i = 0
|
|
this[offset] = value & 0xFF
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
this[offset + i] = (value / mul) & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
|
checkInt(this, value, offset, byteLength, maxBytes, 0)
|
|
}
|
|
|
|
var i = byteLength - 1
|
|
var mul = 1
|
|
this[offset + i] = value & 0xFF
|
|
while (--i >= 0 && (mul *= 0x100)) {
|
|
this[offset + i] = (value / mul) & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
|
|
this[offset] = (value & 0xff)
|
|
return offset + 1
|
|
}
|
|
|
|
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
|
this[offset + 3] = (value >>> 24)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
var limit = Math.pow(2, (8 * byteLength) - 1)
|
|
|
|
checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
|
}
|
|
|
|
var i = 0
|
|
var mul = 1
|
|
var sub = 0
|
|
this[offset] = value & 0xFF
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
|
|
sub = 1
|
|
}
|
|
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
var limit = Math.pow(2, (8 * byteLength) - 1)
|
|
|
|
checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
|
}
|
|
|
|
var i = byteLength - 1
|
|
var mul = 1
|
|
var sub = 0
|
|
this[offset + i] = value & 0xFF
|
|
while (--i >= 0 && (mul *= 0x100)) {
|
|
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
|
|
sub = 1
|
|
}
|
|
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
|
|
if (value < 0) value = 0xff + value + 1
|
|
this[offset] = (value & 0xff)
|
|
return offset + 1
|
|
}
|
|
|
|
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 3] = (value >>> 24)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
|
if (value < 0) value = 0xffffffff + value + 1
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
function checkIEEE754 (buf, value, offset, ext, max, min) {
|
|
if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
|
if (offset < 0) throw new RangeError('Index out of range')
|
|
}
|
|
|
|
function writeFloat (buf, value, offset, littleEndian, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
|
|
}
|
|
ieee754.write(buf, value, offset, littleEndian, 23, 4)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
|
|
return writeFloat(this, value, offset, true, noAssert)
|
|
}
|
|
|
|
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
|
|
return writeFloat(this, value, offset, false, noAssert)
|
|
}
|
|
|
|
function writeDouble (buf, value, offset, littleEndian, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
|
|
}
|
|
ieee754.write(buf, value, offset, littleEndian, 52, 8)
|
|
return offset + 8
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, true, noAssert)
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, false, noAssert)
|
|
}
|
|
|
|
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
|
|
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
|
|
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
|
|
if (!start) start = 0
|
|
if (!end && end !== 0) end = this.length
|
|
if (targetStart >= target.length) targetStart = target.length
|
|
if (!targetStart) targetStart = 0
|
|
if (end > 0 && end < start) end = start
|
|
|
|
// Copy 0 bytes; we're done
|
|
if (end === start) return 0
|
|
if (target.length === 0 || this.length === 0) return 0
|
|
|
|
// Fatal error conditions
|
|
if (targetStart < 0) {
|
|
throw new RangeError('targetStart out of bounds')
|
|
}
|
|
if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
|
|
if (end < 0) throw new RangeError('sourceEnd out of bounds')
|
|
|
|
// Are we oob?
|
|
if (end > this.length) end = this.length
|
|
if (target.length - targetStart < end - start) {
|
|
end = target.length - targetStart + start
|
|
}
|
|
|
|
var len = end - start
|
|
|
|
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
|
|
// Use built-in when available, missing from IE11
|
|
this.copyWithin(targetStart, start, end)
|
|
} else if (this === target && start < targetStart && targetStart < end) {
|
|
// descending copy from end
|
|
for (var i = len - 1; i >= 0; --i) {
|
|
target[i + targetStart] = this[i + start]
|
|
}
|
|
} else {
|
|
Uint8Array.prototype.set.call(
|
|
target,
|
|
this.subarray(start, end),
|
|
targetStart
|
|
)
|
|
}
|
|
|
|
return len
|
|
}
|
|
|
|
// Usage:
|
|
// buffer.fill(number[, offset[, end]])
|
|
// buffer.fill(buffer[, offset[, end]])
|
|
// buffer.fill(string[, offset[, end]][, encoding])
|
|
Buffer.prototype.fill = function fill (val, start, end, encoding) {
|
|
// Handle string cases:
|
|
if (typeof val === 'string') {
|
|
if (typeof start === 'string') {
|
|
encoding = start
|
|
start = 0
|
|
end = this.length
|
|
} else if (typeof end === 'string') {
|
|
encoding = end
|
|
end = this.length
|
|
}
|
|
if (encoding !== undefined && typeof encoding !== 'string') {
|
|
throw new TypeError('encoding must be a string')
|
|
}
|
|
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
|
|
throw new TypeError('Unknown encoding: ' + encoding)
|
|
}
|
|
if (val.length === 1) {
|
|
var code = val.charCodeAt(0)
|
|
if ((encoding === 'utf8' && code < 128) ||
|
|
encoding === 'latin1') {
|
|
// Fast path: If `val` fits into a single byte, use that numeric value.
|
|
val = code
|
|
}
|
|
}
|
|
} else if (typeof val === 'number') {
|
|
val = val & 255
|
|
}
|
|
|
|
// Invalid ranges are not set to a default, so can range check early.
|
|
if (start < 0 || this.length < start || this.length < end) {
|
|
throw new RangeError('Out of range index')
|
|
}
|
|
|
|
if (end <= start) {
|
|
return this
|
|
}
|
|
|
|
start = start >>> 0
|
|
end = end === undefined ? this.length : end >>> 0
|
|
|
|
if (!val) val = 0
|
|
|
|
var i
|
|
if (typeof val === 'number') {
|
|
for (i = start; i < end; ++i) {
|
|
this[i] = val
|
|
}
|
|
} else {
|
|
var bytes = Buffer.isBuffer(val)
|
|
? val
|
|
: Buffer.from(val, encoding)
|
|
var len = bytes.length
|
|
if (len === 0) {
|
|
throw new TypeError('The value "' + val +
|
|
'" is invalid for argument "value"')
|
|
}
|
|
for (i = 0; i < end - start; ++i) {
|
|
this[i + start] = bytes[i % len]
|
|
}
|
|
}
|
|
|
|
return this
|
|
}
|
|
|
|
// HELPER FUNCTIONS
|
|
// ================
|
|
|
|
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
|
|
|
|
function base64clean (str) {
|
|
// Node takes equal signs as end of the Base64 encoding
|
|
str = str.split('=')[0]
|
|
// Node strips out invalid characters like \n and \t from the string, base64-js does not
|
|
str = str.trim().replace(INVALID_BASE64_RE, '')
|
|
// Node converts strings with length < 2 to ''
|
|
if (str.length < 2) return ''
|
|
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
|
|
while (str.length % 4 !== 0) {
|
|
str = str + '='
|
|
}
|
|
return str
|
|
}
|
|
|
|
function toHex (n) {
|
|
if (n < 16) return '0' + n.toString(16)
|
|
return n.toString(16)
|
|
}
|
|
|
|
function utf8ToBytes (string, units) {
|
|
units = units || Infinity
|
|
var codePoint
|
|
var length = string.length
|
|
var leadSurrogate = null
|
|
var bytes = []
|
|
|
|
for (var i = 0; i < length; ++i) {
|
|
codePoint = string.charCodeAt(i)
|
|
|
|
// is surrogate component
|
|
if (codePoint > 0xD7FF && codePoint < 0xE000) {
|
|
// last char was a lead
|
|
if (!leadSurrogate) {
|
|
// no lead yet
|
|
if (codePoint > 0xDBFF) {
|
|
// unexpected trail
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
continue
|
|
} else if (i + 1 === length) {
|
|
// unpaired lead
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
continue
|
|
}
|
|
|
|
// valid lead
|
|
leadSurrogate = codePoint
|
|
|
|
continue
|
|
}
|
|
|
|
// 2 leads in a row
|
|
if (codePoint < 0xDC00) {
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
leadSurrogate = codePoint
|
|
continue
|
|
}
|
|
|
|
// valid surrogate pair
|
|
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
|
|
} else if (leadSurrogate) {
|
|
// valid bmp char, but last char was a lead
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
}
|
|
|
|
leadSurrogate = null
|
|
|
|
// encode utf8
|
|
if (codePoint < 0x80) {
|
|
if ((units -= 1) < 0) break
|
|
bytes.push(codePoint)
|
|
} else if (codePoint < 0x800) {
|
|
if ((units -= 2) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0x6 | 0xC0,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else if (codePoint < 0x10000) {
|
|
if ((units -= 3) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0xC | 0xE0,
|
|
codePoint >> 0x6 & 0x3F | 0x80,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else if (codePoint < 0x110000) {
|
|
if ((units -= 4) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0x12 | 0xF0,
|
|
codePoint >> 0xC & 0x3F | 0x80,
|
|
codePoint >> 0x6 & 0x3F | 0x80,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else {
|
|
throw new Error('Invalid code point')
|
|
}
|
|
}
|
|
|
|
return bytes
|
|
}
|
|
|
|
function asciiToBytes (str) {
|
|
var byteArray = []
|
|
for (var i = 0; i < str.length; ++i) {
|
|
// Node's code seems to be doing this and not & 0x7F..
|
|
byteArray.push(str.charCodeAt(i) & 0xFF)
|
|
}
|
|
return byteArray
|
|
}
|
|
|
|
function utf16leToBytes (str, units) {
|
|
var c, hi, lo
|
|
var byteArray = []
|
|
for (var i = 0; i < str.length; ++i) {
|
|
if ((units -= 2) < 0) break
|
|
|
|
c = str.charCodeAt(i)
|
|
hi = c >> 8
|
|
lo = c % 256
|
|
byteArray.push(lo)
|
|
byteArray.push(hi)
|
|
}
|
|
|
|
return byteArray
|
|
}
|
|
|
|
function base64ToBytes (str) {
|
|
return base64.toByteArray(base64clean(str))
|
|
}
|
|
|
|
function blitBuffer (src, dst, offset, length) {
|
|
for (var i = 0; i < length; ++i) {
|
|
if ((i + offset >= dst.length) || (i >= src.length)) break
|
|
dst[i + offset] = src[i]
|
|
}
|
|
return i
|
|
}
|
|
|
|
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
|
|
// the `instanceof` check but they should be treated as of that type.
|
|
// See: https://github.com/feross/buffer/issues/166
|
|
function isInstance (obj, type) {
|
|
return obj instanceof type ||
|
|
(obj != null && obj.constructor != null && obj.constructor.name != null &&
|
|
obj.constructor.name === type.name)
|
|
}
|
|
function numberIsNaN (obj) {
|
|
// For IE11 support
|
|
return obj !== obj // eslint-disable-line no-self-compare
|
|
}
|
|
|
|
}).call(this)}).call(this,require("buffer").Buffer)
|
|
},{"base64-js":4,"buffer":6,"ieee754":7}],7:[function(require,module,exports){
|
|
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
|
|
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
|
|
var e, m
|
|
var eLen = (nBytes * 8) - mLen - 1
|
|
var eMax = (1 << eLen) - 1
|
|
var eBias = eMax >> 1
|
|
var nBits = -7
|
|
var i = isLE ? (nBytes - 1) : 0
|
|
var d = isLE ? -1 : 1
|
|
var s = buffer[offset + i]
|
|
|
|
i += d
|
|
|
|
e = s & ((1 << (-nBits)) - 1)
|
|
s >>= (-nBits)
|
|
nBits += eLen
|
|
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
|
|
|
|
m = e & ((1 << (-nBits)) - 1)
|
|
e >>= (-nBits)
|
|
nBits += mLen
|
|
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
|
|
|
|
if (e === 0) {
|
|
e = 1 - eBias
|
|
} else if (e === eMax) {
|
|
return m ? NaN : ((s ? -1 : 1) * Infinity)
|
|
} else {
|
|
m = m + Math.pow(2, mLen)
|
|
e = e - eBias
|
|
}
|
|
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
|
|
}
|
|
|
|
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
|
|
var e, m, c
|
|
var eLen = (nBytes * 8) - mLen - 1
|
|
var eMax = (1 << eLen) - 1
|
|
var eBias = eMax >> 1
|
|
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
|
|
var i = isLE ? 0 : (nBytes - 1)
|
|
var d = isLE ? 1 : -1
|
|
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
|
|
|
|
value = Math.abs(value)
|
|
|
|
if (isNaN(value) || value === Infinity) {
|
|
m = isNaN(value) ? 1 : 0
|
|
e = eMax
|
|
} else {
|
|
e = Math.floor(Math.log(value) / Math.LN2)
|
|
if (value * (c = Math.pow(2, -e)) < 1) {
|
|
e--
|
|
c *= 2
|
|
}
|
|
if (e + eBias >= 1) {
|
|
value += rt / c
|
|
} else {
|
|
value += rt * Math.pow(2, 1 - eBias)
|
|
}
|
|
if (value * c >= 2) {
|
|
e++
|
|
c /= 2
|
|
}
|
|
|
|
if (e + eBias >= eMax) {
|
|
m = 0
|
|
e = eMax
|
|
} else if (e + eBias >= 1) {
|
|
m = ((value * c) - 1) * Math.pow(2, mLen)
|
|
e = e + eBias
|
|
} else {
|
|
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
|
|
e = 0
|
|
}
|
|
}
|
|
|
|
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
|
|
|
|
e = (e << mLen) | m
|
|
eLen += mLen
|
|
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
|
|
|
|
buffer[offset + i - d] |= s * 128
|
|
}
|
|
|
|
},{}],8:[function(require,module,exports){
|
|
// shim for using process in browser
|
|
var process = module.exports = {};
|
|
|
|
// cached from whatever global is present so that test runners that stub it
|
|
// don't break things. But we need to wrap it in a try catch in case it is
|
|
// wrapped in strict mode code which doesn't define any globals. It's inside a
|
|
// function because try/catches deoptimize in certain engines.
|
|
|
|
var cachedSetTimeout;
|
|
var cachedClearTimeout;
|
|
|
|
function defaultSetTimout() {
|
|
throw new Error('setTimeout has not been defined');
|
|
}
|
|
function defaultClearTimeout () {
|
|
throw new Error('clearTimeout has not been defined');
|
|
}
|
|
(function () {
|
|
try {
|
|
if (typeof setTimeout === 'function') {
|
|
cachedSetTimeout = setTimeout;
|
|
} else {
|
|
cachedSetTimeout = defaultSetTimout;
|
|
}
|
|
} catch (e) {
|
|
cachedSetTimeout = defaultSetTimout;
|
|
}
|
|
try {
|
|
if (typeof clearTimeout === 'function') {
|
|
cachedClearTimeout = clearTimeout;
|
|
} else {
|
|
cachedClearTimeout = defaultClearTimeout;
|
|
}
|
|
} catch (e) {
|
|
cachedClearTimeout = defaultClearTimeout;
|
|
}
|
|
} ())
|
|
function runTimeout(fun) {
|
|
if (cachedSetTimeout === setTimeout) {
|
|
//normal enviroments in sane situations
|
|
return setTimeout(fun, 0);
|
|
}
|
|
// if setTimeout wasn't available but was latter defined
|
|
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
|
|
cachedSetTimeout = setTimeout;
|
|
return setTimeout(fun, 0);
|
|
}
|
|
try {
|
|
// when when somebody has screwed with setTimeout but no I.E. maddness
|
|
return cachedSetTimeout(fun, 0);
|
|
} catch(e){
|
|
try {
|
|
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
|
|
return cachedSetTimeout.call(null, fun, 0);
|
|
} catch(e){
|
|
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
|
|
return cachedSetTimeout.call(this, fun, 0);
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
function runClearTimeout(marker) {
|
|
if (cachedClearTimeout === clearTimeout) {
|
|
//normal enviroments in sane situations
|
|
return clearTimeout(marker);
|
|
}
|
|
// if clearTimeout wasn't available but was latter defined
|
|
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
|
|
cachedClearTimeout = clearTimeout;
|
|
return clearTimeout(marker);
|
|
}
|
|
try {
|
|
// when when somebody has screwed with setTimeout but no I.E. maddness
|
|
return cachedClearTimeout(marker);
|
|
} catch (e){
|
|
try {
|
|
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
|
|
return cachedClearTimeout.call(null, marker);
|
|
} catch (e){
|
|
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
|
|
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
|
|
return cachedClearTimeout.call(this, marker);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
}
|
|
var queue = [];
|
|
var draining = false;
|
|
var currentQueue;
|
|
var queueIndex = -1;
|
|
|
|
function cleanUpNextTick() {
|
|
if (!draining || !currentQueue) {
|
|
return;
|
|
}
|
|
draining = false;
|
|
if (currentQueue.length) {
|
|
queue = currentQueue.concat(queue);
|
|
} else {
|
|
queueIndex = -1;
|
|
}
|
|
if (queue.length) {
|
|
drainQueue();
|
|
}
|
|
}
|
|
|
|
function drainQueue() {
|
|
if (draining) {
|
|
return;
|
|
}
|
|
var timeout = runTimeout(cleanUpNextTick);
|
|
draining = true;
|
|
|
|
var len = queue.length;
|
|
while(len) {
|
|
currentQueue = queue;
|
|
queue = [];
|
|
while (++queueIndex < len) {
|
|
if (currentQueue) {
|
|
currentQueue[queueIndex].run();
|
|
}
|
|
}
|
|
queueIndex = -1;
|
|
len = queue.length;
|
|
}
|
|
currentQueue = null;
|
|
draining = false;
|
|
runClearTimeout(timeout);
|
|
}
|
|
|
|
process.nextTick = function (fun) {
|
|
var args = new Array(arguments.length - 1);
|
|
if (arguments.length > 1) {
|
|
for (var i = 1; i < arguments.length; i++) {
|
|
args[i - 1] = arguments[i];
|
|
}
|
|
}
|
|
queue.push(new Item(fun, args));
|
|
if (queue.length === 1 && !draining) {
|
|
runTimeout(drainQueue);
|
|
}
|
|
};
|
|
|
|
// v8 likes predictible objects
|
|
function Item(fun, array) {
|
|
this.fun = fun;
|
|
this.array = array;
|
|
}
|
|
Item.prototype.run = function () {
|
|
this.fun.apply(null, this.array);
|
|
};
|
|
process.title = 'browser';
|
|
process.browser = true;
|
|
process.env = {};
|
|
process.argv = [];
|
|
process.version = ''; // empty string to avoid regexp issues
|
|
process.versions = {};
|
|
|
|
function noop() {}
|
|
|
|
process.on = noop;
|
|
process.addListener = noop;
|
|
process.once = noop;
|
|
process.off = noop;
|
|
process.removeListener = noop;
|
|
process.removeAllListeners = noop;
|
|
process.emit = noop;
|
|
process.prependListener = noop;
|
|
process.prependOnceListener = noop;
|
|
|
|
process.listeners = function (name) { return [] }
|
|
|
|
process.binding = function (name) {
|
|
throw new Error('process.binding is not supported');
|
|
};
|
|
|
|
process.cwd = function () { return '/' };
|
|
process.chdir = function (dir) {
|
|
throw new Error('process.chdir is not supported');
|
|
};
|
|
process.umask = function() { return 0; };
|
|
|
|
},{}]},{},[2]);
|