function readIEEE754(buf, idx, isLE, nl, ml) { if(isLE === undefined) isLE = true; if(!nl) nl = 8; if(!ml && nl === 8) ml = 52; var e, m, el = nl * 8 - ml - 1, eMax = (1 << el) - 1, eBias = eMax >> 1; var bits = -7, d = isLE ? -1 : 1, i = isLE ? (nl - 1) : 0, s = buf[idx + i]; i += d; e = s & ((1 << (-bits)) - 1); s >>>= (-bits); bits += el; for (; bits > 0; e = e * 256 + buf[idx + i], i += d, bits -= 8); m = e & ((1 << (-bits)) - 1); e >>>= (-bits); bits += ml; for (; bits > 0; m = m * 256 + buf[idx + i], i += d, bits -= 8); if (e === eMax) return m ? NaN : ((s ? -1 : 1) * Infinity); else if (e === 0) e = 1 - eBias; else { m = m + Math.pow(2, ml); e = e - eBias; } return (s ? -1 : 1) * m * Math.pow(2, e - ml); } var __toBuffer; if(typeof Buffer !== "undefined") { Buffer.prototype.hexlify= function() { return this.toString('hex'); }; __toBuffer = function(bufs) { return Buffer.concat(bufs[0]); }; } else { __toBuffer = function(bufs) { var x = []; for(var i = 0; i != bufs[0].length; ++i) { x = x.concat(bufs[0][i]); } return x; }; } var __readUInt8 = function(b, idx) { return b.readUInt8 ? b.readUInt8(idx) : b[idx]; }; var __readUInt16LE = function(b, idx) { return b.readUInt16LE ? b.readUInt16LE(idx) : b[idx+1]*(1<<8)+b[idx]; }; var __readInt16LE = function(b, idx) { var u = __readUInt16LE(b,idx); if(!(u & 0x8000)) return u; return (0xffff - u + 1) * -1; }; var __readUInt32LE = function(b, idx) { return b.readUInt32LE ? b.readUInt32LE(idx) : b[idx+3]*(1<<24)+b[idx+2]*(1<<16)+b[idx+1]*(1<<8)+b[idx]; }; var __readInt32LE = function(b, idx) { if(b.readInt32LE) return b.readInt32LE(idx); var u = __readUInt32LE(b,idx); if(!(u & 0x80000000)) return u; return (0xffffffff - u + 1) * -1; }; var __readDoubleLE = function(b, idx) { return b.readDoubleLE ? b.readDoubleLE(idx) : readIEEE754(b, idx||0);}; function ReadShift(size, t) { var o = "", oo = [], w, vv, i, loc; t = t || 'u'; if(size === 'ieee754') { size = 8; t = 'f'; } switch(size) { case 1: o = __readUInt8(this, this.l); break; case 2: o=(t==='u' ? __readUInt16LE : __readInt16LE)(this, this.l); break; case 4: o = __readUInt32LE(this, this.l); break; case 8: if(t === 'f') { o = __readDoubleLE(this, this.l); break; } /* falls through */ case 16: o = this.toString('hex', this.l,this.l+size); break; /* sbcs and dbcs support continue records in the SST way TODO codepages */ /* TODO: DBCS http://msdn.microsoft.com/en-us/library/cc194788.aspx */ case 'dbcs': size = 2*t; loc = this.l; for(i = 0; i != t; ++i) { oo.push(_getchar(__readUInt16LE(this, loc))); loc+=2; } o = oo.join(""); break; case 'sbcs': size = t; o = ""; loc = this.l; for(i = 0; i != t; ++i) { o += _getchar(__readUInt8(this, loc)); loc+=1; } break; } this.l+=size; return o; } function prep_blob(blob, pos) { blob.read_shift = ReadShift.bind(blob); blob.l = pos || 0; var read = ReadShift.bind(blob); return [read]; } function parsenoop(blob, length) { blob.l += length; }