cfb - npm Package Compare versions

Comparing version 0.10.0 to 0.10.1

cfb.js

@@ -89,3 +89,3 @@ /* cfb.js (C) 2013-2014 SheetJS -- http://sheetjs.com */
 var exports = {};
-exports.version = '0.10.0';
+exports.version = '0.10.1';
 function parse(file) {
@@ -92,0 +92,0 @@ var mver = 3; // major version

dist/cfb.js

@@ -8,35 +8,20 @@ /* cfb.js (C) 2013-2014 SheetJS -- http://sheetjs.com */
 	return {
-		/* (will need this for writing) encode: function(input, utf8) {
+		decode: function(input) {
 			var o = "";
-			var c1, c2, c3, e1, e2, e3, e4;
-			for(var i = 0; i < input.length; ) {
-				c1 = input.charCodeAt(i++);
-				c2 = input.charCodeAt(i++);
-				c3 = input.charCodeAt(i++);
-				e1 = c1 >> 2;
-				e2 = (c1 & 3) << 4 | c2 >> 4;
-				e3 = (c2 & 15) << 2 | c3 >> 6;
-				e4 = c3 & 63;
-				if (isNaN(c2)) { e3 = e4 = 64; }
-				else if (isNaN(c3)) { e4 = 64; }
-				o += map.charAt(e1) + map.charAt(e2) + map.charAt(e3) + map.charAt(e4);
-			}
-			return o;
-		},*/
-		decode: function(input, utf8) {
-			var o = "";
 			var c1, c2, c3;
 			var e1, e2, e3, e4;
-			input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+			input = input.replace(/[^\w\+\/\=]/g, "");
 			for(var i = 0; i < input.length;) {
 				e1 = map.indexOf(input.charAt(i++));
 				e2 = map.indexOf(input.charAt(i++));
+				c1 = (e1 << 2) | (e2 >> 4);
+				o += String.fromCharCode(c1);
+
 				e3 = map.indexOf(input.charAt(i++));
+				c2 = ((e2 & 15) << 4) | (e3 >> 2);
+				if (e3 !== 64) { o += String.fromCharCode(c2); }
+
 				e4 = map.indexOf(input.charAt(i++));
-				c1 = e1 << 2 | e2 >> 4;
-				c2 = (e2 & 15) << 4 | e3 >> 2;
-				c3 = (e3 & 3) << 6 | e4;
-				o += String.fromCharCode(c1);
-				if (e3 != 64) { o += String.fromCharCode(c2); }
-				if (e4 != 64) { o += String.fromCharCode(c3); }
+				c3 = ((e3 & 3) << 6) | e4;
+				if (e4 !== 64) { o += String.fromCharCode(c3); }
 			}
@@ -48,85 +33,63 @@ return o;
 
-function s2a(s) {
-	if(typeof Buffer !== 'undefined') return new Buffer(s, "binary");
-	var w = s.split("").map(function(x){ return x.charCodeAt(0) & 0xff; });
-	return w;
-}
+var chr0 = /\u0000/g, chr1 = /[\u0001-\u0006]/;
 
-var __toBuffer;
+var s2a, _s2a;
+s2a = _s2a = function _s2a(s) { return s.split("").map(function(x){ return x.charCodeAt(0) & 0xff; }); };
+var __toBuffer, ___toBuffer;
+__toBuffer = ___toBuffer = function(bufs) { var x = []; for(var i = 0; i < bufs[0].length; ++i) { x.push.apply(x, bufs[0][i]); } return x; };
+var __utf16le, ___utf16le;
+__utf16le = ___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,'').replace(chr1,'!'); };
+var __hexlify, ___hexlify;
+__hexlify = ___hexlify = function(b,s,l) { return b.slice(s,(s+l)).map(function(x){return (x<16?"0":"") + x.toString(16);}).join(""); };
+var bconcat = function(bufs) { return [].concat.apply([], bufs); };
+
+
 if(typeof Buffer !== "undefined") {
-	Buffer.prototype.hexlify= function() { return this.toString('hex'); };
-	Buffer.prototype.utf16le= function(s,e){return this.toString('utf16le',s,e).replace(/\u0000/,'').replace(/[\u0001-\u0006]/,'!');};
-	Buffer.prototype.utf8 = function(s,e) { return this.toString('utf8',s,e); };
-	__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;
+	__utf16le = function(b,s,e) {
+		if(!Buffer.isBuffer(b)) return ___utf16le(b,s,e);
+		return b.toString('utf16le',s,e).replace(chr0,'').replace(chr1,'!');
 	};
+	__hexlify = function(b,s,l) { return Buffer.isBuffer(b) ? b.toString('hex',s,s+l) : ___hexlify(b,s,l); };
+	__toBuffer = function(bufs) { return (bufs[0].length > 0 && Buffer.isBuffer(bufs[0][0])) ? Buffer.concat(bufs[0]) : ___toBuffer(bufs);};
+	s2a = function(s) { return Buffer(s, "binary"); };
+	bconcat = function(bufs) { return Buffer.isBuffer(bufs[0]) ? Buffer.concat(bufs) : [].concat.apply([], bufs); };
 }
 
-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 __hexlify = function(b) { return b.map(function(x){return (x<16?"0":"") + x.toString(16);}).join(""); };
+var __readUInt8 = function(b, idx) { return b[idx]; };
+var __readUInt16LE = function(b, idx) { return b[idx+1]*(1<<8)+b[idx]; };
+var __readInt16LE = function(b, idx) { var u = b[idx+1]*(1<<8)+b[idx]; return (u < 0x8000) ? u : (0xffff - u + 1) * -1; };
+var __readUInt32LE = function(b, idx) { return b[idx+3]*(1<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]; };
+var __readInt32LE = function(b, idx) { return (b[idx+3]<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]; };
 
-var __utf16le = function(b,s,e) { if(b.utf16le) return b.utf16le(s,e); var ss=[]; for(var i=s; i<e; i+=2) ss.push(String.fromCharCode(__readUInt16LE(b,i))); return ss.join("").replace(/\u0000/,'').replace(/[\u0001-\u0006]/,'!'); };
-
-var __utf8 = function(b,s,e) { if(b.utf8) return b.utf8(s,e); var ss=[]; for(var i=s; i<e; i++) ss.push(String.fromCharCode(__readUInt8(b,i))); return ss.join(""); };
-
-function bconcat(bufs) { return (typeof Buffer !== 'undefined') ? Buffer.concat(bufs) : [].concat.apply([], bufs); }
-
-/** Buffer helpers -- keep track of read location `.l` and move it */
 function ReadShift(size, t) {
-	var o, oo=[], w, vv; t = t || 'u';
+	var oI, oS, type = 0;
 	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:
-		case 16: o = this.toString('hex', this.l,this.l+size); break;
-
-		case 'utf8': size = t; o = __utf8(this, this.l, this.l + size); break;
-		case 'utf16le': size=2*t; o = __utf16le(this, this.l, this.l + size); break;
-
-		case 'cstr': size = 0; o = "";
-			while((w=__readUInt8(this, this.l + size++))!==0) oo.push(String.fromCharCode(w));
-			o = oo.join(""); break;
-		case 'wstr': size = 0; o = "";
-			while((w=__readUInt16LE(this,this.l +size))!==0){oo.push(String.fromCharCode(w));size+=2;}
-			size+=2; break;
+		case 1: oI = __readUInt8(this, this.l); break;
+		case 2: oI = (t !== 'i' ? __readUInt16LE : __readInt16LE)(this, this.l); break;
+		case 4: oI = __readInt32LE(this, this.l); break;
+		case 16: type = 2; oS = __hexlify(this, this.l, size);
 	}
-	this.l+=size; return o;
+	this.l+=size; if(type === 0) return oI; return oS;
 }
 
 function CheckField(hexstr, fld) {
-	var b = this.slice(this.l, this.l+hexstr.length/2);
-	var m = b.hexlify ? b.hexlify() : __hexlify(b);
-	if(m !== hexstr) throw (fld||"") + 'Expected ' + hexstr + ' saw ' + m;
-	this.l += hexstr.length/2;
+	var m = __hexlify(this,this.l,hexstr.length>>1);
+	if(m !== hexstr) throw fld + 'Expected ' + hexstr + ' saw ' + m;
+	this.l += hexstr.length>>1;
 }
 
 function prep_blob(blob, pos) {
-	blob.read_shift = ReadShift.bind(blob);
+	blob.l = pos;
+	blob.read_shift = ReadShift;
 	blob.chk = CheckField;
-	blob.l = pos || 0;
-	var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
-	return [read, chk];
 }
 
 /* [MS-CFB] v20130118 */
-var CFB = (function(){
-this.version = '0.9.1';
+var CFB = (function _CFB(){
+var exports = {};
+exports.version = '0.10.1';
 function parse(file) {
-
-
 var mver = 3; // major version
 var ssz = 512; // sector size
-var mssz = 64; // mini sector size
-var nds = 0; // number of directory sectors
-var nfs = 0; // number of FAT sectors
 var nmfs = 0; // number of mini FAT sectors
@@ -138,6 +101,2 @@ var ndfs = 0; // number of DIFAT sectors
 
-var ms_cutoff_size = 4096; // mini stream cutoff size
-var minifat_store = 0; // first sector with minifat data
-var minifat_size = 0; // size of minifat data
-
 var fat_addrs = []; // locations of FAT sectors
@@ -147,186 +106,277 @@
 var blob = file.slice(0,512);
-prep_blob(blob);
-var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
-var j = 0, q;
+prep_blob(blob, 0);
 
-// header signature 8
-chk(HEADER_SIGNATURE, 'Header Signature: ');
-
-// clsid 16
-chk(HEADER_CLSID, 'CLSID: ');
-
-// minor version 2
-read(2);
-
-// major version 3
-mver = read(2);
+/* major version */
+mver = check_get_mver(blob);
 switch(mver) {
-	case 3: ssz = 512; break;
-	case 4: ssz = 4096; break;
+	case 3: ssz = 512; break; case 4: ssz = 4096; break;
 	default: throw "Major Version: Expected 3 or 4 saw " + mver;
 }
 
-// reprocess header
-var pos = blob.l;
-blob = file.slice(0,ssz);
-prep_blob(blob,pos);
-read = ReadShift.bind(blob);
-chk = CheckField.bind(blob);
+/* 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);
 
-// Byte Order TODO
-chk('feff', 'Byte Order: ');
+check_shifts(blob, mver);
 
-// Sector Shift
-switch((q = read(2))) {
-	case 0x09: if(mver !== 3) throw 'MajorVersion/SectorShift Mismatch'; break;
-	case 0x0c: if(mver !== 4) throw 'MajorVersion/SectorShift Mismatch'; break;
-	default: throw 'Sector Shift: Expected 9 or 12 saw ' + q;
-}
-
-// Mini Sector Shift
-chk('0600', 'Mini Sector Shift: ');
-
-// Reserved
-chk('000000000000', 'Mini Sector Shift: ');
-
 // Number of Directory Sectors
-nds = read(4);
+var nds = blob.read_shift(4, 'i');
 if(mver === 3 && nds !== 0) throw '# Directory Sectors: Expected 0 saw ' + nds;
 
 // Number of FAT Sectors
-nfs = read(4);
+//var nfs = blob.read_shift(4, 'i');
+blob.l += 4;
 
 // First Directory Sector Location
-dir_start = read(4);
+dir_start = blob.read_shift(4, 'i');
 
-// Transaction Signature TODO
-read(4);
+// Transaction Signature
+blob.l += 4;
 
-// Mini Stream Cutoff Size TODO
-chk('00100000', 'Mini Stream Cutoff Size: ');
+// Mini Stream Cutoff Size
+blob.chk('00100000', 'Mini Stream Cutoff Size: ');
 
 // First Mini FAT Sector Location
-minifat_start = read(4);
+minifat_start = blob.read_shift(4, 'i');
 
 // Number of Mini FAT Sectors
-nmfs = read(4);
+nmfs = blob.read_shift(4, 'i');
 
 // First DIFAT sector location
-difat_start = read(4);
+difat_start = blob.read_shift(4, 'i');
 
 // Number of DIFAT Sectors
-ndfs = read(4);
+ndfs = blob.read_shift(4, 'i');
 
 // Grab FAT Sector Locations
-for(j = 0; blob.l != 512; ) {
-	if((q = read(4))>=MAXREGSECT) break;
-	fat_addrs[j++] = q;
+for(var q, 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, ndfs, 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";
+
+/* [MS-CFB] 2.6.1 Compound File Directory Entry */
+var files = {}, Paths = [], FileIndex = [], FullPaths = [], FullPathDir = {};
+read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, FileIndex);
+
+build_full_paths(FileIndex, FullPathDir, FullPaths, Paths);
+
+var root_name = Paths.shift();
+Paths.root = root_name;
+
+/* [MS-CFB] 2.6.4 (Unicode 3.0.1 case conversion) */
+var find_path = make_find_path(FullPaths, Paths, FileIndex, files, root_name);
+
+return {
+	raw: {header: header, sectors: sectors},
+	FileIndex: FileIndex,
+	FullPaths: FullPaths,
+	FullPathDir: FullPathDir,
+	find: find_path
+};
+} // parse
+
+/* [MS-CFB] 2.2 Compound File Header -- read up to major version */
+function check_get_mver(blob) {
+	// header signature 8
+	blob.chk(HEADER_SIGNATURE, 'Header Signature: ');
+
+	// clsid 16
+	blob.chk(HEADER_CLSID, 'CLSID: ');
+
+	// minor version 2
+	blob.l += 2;
+
+	return blob.read_shift(2,'u');
+}
+function check_shifts(blob, mver) {
+	var shift = 0x09;
+
+	// Byte Order
+	blob.chk('feff', 'Byte Order: ');
+
+	// Sector Shift
+	switch((shift = blob.read_shift(2))) {
+		case 0x09: if(mver !== 3) throw 'MajorVersion/SectorShift Mismatch'; break;
+		case 0x0c: if(mver !== 4) throw 'MajorVersion/SectorShift Mismatch'; break;
+		default: throw '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 */
-var nsectors = Math.ceil((file.length - ssz)/ssz);
-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);
+function sectorify(file, ssz) {
+	var nsectors = Math.ceil(file.length/ssz)-1;
+	var sectors = new Array(nsectors);
+	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, FPD, FP, Paths) {
+	var i = 0, L = 0, R = 0, C = 0, j = 0, pl = Paths.length;
+	var dad = new Array(pl), q = new Array(pl);
+
+	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) { dad[L] = dad[i]; q.push(L); }
+		if(R !== -1) { dad[R] = dad[i]; 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 = dad[i];
+		if(j === 0) FP[i] = FP[0] + "/" + FP[i];
+		else while(j !== 0) {
+			FP[i] = FP[j] + "/" + FP[i];
+			j = dad[j];
+		}
+		dad[i] = 0;
+	}
+
+	FP[0] += "/";
+	for(i=1; i < pl; ++i) {
+		if(FI[i].type !== 2 /* stream */) FP[i] += "/";
+		FPD[FP[i]] = FI[i];
+	}
+}
+
+/* [MS-CFB] 2.6.4 */
+function make_find_path(FullPaths, Paths, FileIndex, files, root_name) {
+	var UCFullPaths = new Array(FullPaths.length);
+	var UCPaths = new Array(Paths.length), i;
+	for(i = 0; i < FullPaths.length; ++i) UCFullPaths[i] = FullPaths[i].toUpperCase();
+	for(i = 0; i < Paths.length; ++i) UCPaths[i] = Paths[i].toUpperCase();
+	return function find_path(path) {
+		var k;
+		if(path.charCodeAt(0) === 47 /* "/" */) { k=true; path = root_name + path; }
+		else k = path.indexOf("/") !== -1;
+		var UCPath = path.toUpperCase();
+		var w = k === true ? UCFullPaths.indexOf(UCPath) : UCPaths.indexOf(UCPath);
+		if(w === -1) return null;
+		return k === true ? FileIndex[w] : files[Paths[w]];
+	};
+}
+
 /** 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 bytes */
-function sleuth_fat(idx, cnt) {
+function sleuth_fat(idx, cnt, sectors, ssz, fat_addrs) {
+	var q;
 	if(idx === ENDOFCHAIN) {
 		if(cnt !== 0) throw "DIFAT chain shorter than expected";
-		return;
-	}
-	if(idx !== FREESECT) {
-		var sector = sectors[idx];
-		for(var i = 0; i != ssz/4-1; ++i) {
-			if((q = __readUInt32LE(sector,i*4)) === ENDOFCHAIN) break;
+	} else if(idx !== -1 /*FREESECT*/) {
+		var sector = sectors[idx], m = (ssz>>>2)-1;
+		for(var i = 0; i < m; ++i) {
+			if((q = __readInt32LE(sector,i*4)) === ENDOFCHAIN) break;
 			fat_addrs.push(q);
 		}
-		sleuth_fat(__readUInt32LE(sector,ssz-4),cnt - 1);
+		sleuth_fat(__readInt32LE(sector,ssz-4),cnt - 1, sectors, ssz, fat_addrs);
 	}
 }
-sleuth_fat(difat_start, ndfs);
 
-/** DONT CAT THE FAT!  Just calculate where we need to go */
-function get_buffer(byte_addr, bytes) {
-	var addr = fat_addrs[Math.floor(byte_addr*4/ssz)];
-	if(ssz - (byte_addr*4 % ssz) < (bytes || 0)) throw "FAT boundary crossed: " + byte_addr + " "+bytes+" "+ssz;
-	return sectors[addr].slice((byte_addr*4 % ssz));
+/** Chase down the sector linked lists */
+function make_sector_list(sectors, dir_start, fat_addrs, ssz) {
+	var sl = sectors.length, sector_list = new Array(sl);
+	var chkd = new Array(sl), buf, buf_chain;
+	var modulus = ssz - 1, i, j, k, jj;
+	for(i=0; i < sl; ++i) {
+		buf = [];
+		k = (i + dir_start); if(k >= sl) k-=sl;
+		if(chkd[k] === true) continue;
+		buf_chain = [];
+		for(j=k; 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 "FAT boundary crossed: " + j + " 4 "+ssz;
+			j = __readInt32LE(sectors[addr], jj);
+		}
+		sector_list[k] = {nodes: buf, data:__toBuffer([buf_chain])};
+	}
+	return sector_list;
 }
 
-function get_buffer_u32(byte_addr) {
-	return __readUInt32LE(get_buffer(byte_addr,4), 0);
-}
-
-function get_next_sector(idx) { return get_buffer_u32(idx); }
-
-/** Chains */
-var chkd = new Array(sectors.length), sector_list = [];
-var get_sector = function get_sector(k) { return sectors[k]; };
-for(i=0; i != sectors.length; ++i) {
-	var buf = [], k = (i + dir_start) % sectors.length;
-	if(chkd[k]) continue;
-	for(j=k; j<=MAXREGSECT; buf.push(j),j=get_next_sector(j)) chkd[j] = true;
-	sector_list[k] = {nodes: buf};
-	sector_list[k].data = __toBuffer(Array(buf.map(get_sector)));
-}
-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";
-
 /* [MS-CFB] 2.6.1 Compound File Directory Entry */
-var files = {}, Paths = [], FileIndex = [], FullPaths = [], FullPathDir = {};
-function read_directory(idx) {
-	var blob, read, w;
-	var sector = sector_list[idx].data;
-	for(var i = 0; i != sector.length; i+= 128) {
+function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, FileIndex) {
+	var blob;
+	var minifat_store = 0, pl = (Paths.length?2:0);
+	var sector = sector_list[dir_start].data;
+	var i = 0, namelen = 0, name, o, ctime, mtime;
+	for(; i < sector.length; i+= 128) {
 		blob = sector.slice(i, i+128);
 		prep_blob(blob, 64);
-		read = ReadShift.bind(blob);
-		var namelen = read(2);
-		if(namelen === 0) return;
-		var name = __utf16le(blob,0,namelen-(Paths.length?2:0)); // OLE
+		namelen = blob.read_shift(2);
+		if(namelen === 0) continue;
+		name = __utf16le(blob,0,namelen-pl);
 		Paths.push(name);
-		var o = { name: name };
-		o.type = EntryTypes[read(1)];
-		o.color = read(1);
-		o.left = read(4); if(o.left === NOSTREAM) delete o.left;
-		o.right = read(4); if(o.right === NOSTREAM) delete o.right;
-		o.child = read(4); if(o.child === NOSTREAM) delete o.child;
-		o.clsid = read(16);
-		o.state = read(4);
-		var ctime = read(8); if(ctime != "0000000000000000") o.ctime = ctime;
-		var mtime = read(8); if(mtime != "0000000000000000") o.mtime = mtime;
-		o.start = read(4);
-		o.size = read(4);
-		if(o.type === 'root') { //root entry
+		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')
+		};
+		ctime = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
+		if(ctime !== 0) {
+			o.ctime = ctime; o.ct = read_date(blob, blob.l-8);
+		}
+		mtime = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
+		if(mtime !== 0) {
+			o.mtime = mtime; o.mt = read_date(blob, blob.l-8);
+		}
+		o.start = blob.read_shift(4, 'i');
+		o.size = blob.read_shift(4, 'i');
+		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 >= ms_cutoff_size) {
+			/*minifat_size = o.size;*/
+		} else if(o.size >= 4096 /* MSCSZ */) {
 			o.storage = 'fat';
-			if(!sector_list[o.start] && dir_start > 0) o.start = (o.start + dir_start) % sectors.length;
+			if(sector_list[o.start] === undefined) if((o.start+=dir_start)>=sectors.length) o.start-=sectors.length;
 			sector_list[o.start].name = o.name;
 			o.content = sector_list[o.start].data.slice(0,o.size);
-			prep_blob(o.content);
+			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			w = o.start * mssz;
 			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN) {
-				o.content = sector_list[minifat_store].data.slice(w,w+o.size);
-				prep_blob(o.content);
+				o.content = sector_list[minifat_store].data.slice(o.start*MSSZ,o.start*MSSZ+o.size);
+				prep_blob(o.content, 0);
 			}
 		}
-		if(o.ctime) {
-			var ct = blob.slice(blob.l-24, blob.l-16);
-			var c2 = (__readUInt32LE(ct,4)/1e7)*Math.pow(2,32)+__readUInt32LE(ct,0)/1e7;
-			o.ct = new Date((c2 - 11644473600)*1000);
-		}
-		if(o.mtime) {
-			var mt = blob.slice(blob.l-16, blob.l-8);
-			var m2 = (__readUInt32LE(mt,4)/1e7)*Math.pow(2,32)+__readUInt32LE(mt,0)/1e7;
-			o.mt = new Date((m2 - 11644473600)*1000);
-		}
 		files[name] = o;
@@ -336,84 +386,18 @@ FileIndex.push(o);
 }
-read_directory(dir_start);
 
-/* [MS-CFB] 2.6.4 Red-Black Tree */
-function build_full_paths(Dir, pathobj, paths, patharr) {
-	var i;
-	var dad = new Array(patharr.length);
-
-	var q = new Array(patharr.length);
-
-	for(i=0; i != dad.length; ++i) { dad[i]=q[i]=i; paths[i]=patharr[i]; }
-
-	while(q.length > 0) {
-		for(i = q[0]; typeof i !== "undefined"; i = q.shift()) {
-			if(dad[i] === i) {
-				if(Dir[i].left && dad[Dir[i].left] != Dir[i].left) dad[i] = dad[Dir[i].left];
-				if(Dir[i].right && dad[Dir[i].right] != Dir[i].right) dad[i] = dad[Dir[i].right];
-			}
-			if(Dir[i].child) dad[Dir[i].child] = i;
-			if(Dir[i].left) { dad[Dir[i].left] = dad[i]; q.push(Dir[i].left); }
-			if(Dir[i].right) { dad[Dir[i].right] = dad[i]; q.push(Dir[i].right); }
-		}
-		for(i=1; i != dad.length; ++i) if(dad[i] === i) {
-			if(Dir[i].right && dad[Dir[i].right] != Dir[i].right) dad[i] = dad[Dir[i].right];
-			else if(Dir[i].left && dad[Dir[i].left] != Dir[i].left) dad[i] = dad[Dir[i].left];
-		}
-	}
-
-	for(i=1; i !== paths.length; ++i) {
-		if(Dir[i].type === "unknown") continue;
-		var j = dad[i];
-		if(j === 0) paths[i] = paths[0] + "/" + paths[i];
-		else while(j !== 0) {
-			paths[i] = paths[j] + "/" + paths[i];
-			j = dad[j];
-		}
-		dad[i] = 0;
-	}
-
-	paths[0] += "/";
-	for(i=1; i !== paths.length; ++i) if(Dir[i].type !== 'stream') paths[i] += "/";
-	for(i=0; i !== paths.length; ++i) pathobj[paths[i]] = FileIndex[i];
+function read_date(blob, offset) {
+	return new Date(( ( (__readUInt32LE(blob,offset+4)/1e7)*Math.pow(2,32)+__readUInt32LE(blob,offset)/1e7 ) - 11644473600)*1000);
 }
-build_full_paths(FileIndex, FullPathDir, FullPaths, Paths);
 
-var root_name = Paths.shift();
-Paths.root = root_name;
-
-/* [MS-CFB] 2.6.4 (Unicode 3.0.1 case conversion) */
-function find_path(path) {
-	if(path[0] === "/") path = root_name + path;
-	var UCNames = (path.indexOf("/") !== -1 ? FullPaths : Paths).map(function(x) { return x.toUpperCase(); });
-	var UCPath = path.toUpperCase();
-	var w = UCNames.indexOf(UCPath);
-	if(w === -1) return null;
-	return path.indexOf("/") !== -1 ? FileIndex[w] : files[Paths[w]];
-}
-
-var rval = {
-	raw: {header: header, sectors: sectors},
-	FileIndex: FileIndex,
-	FullPaths: FullPaths,
-	FullPathDir: FullPathDir,
-	find: find_path
-};
-
-return rval;
-} // parse
-
-
+var fs;
 function readFileSync(filename) {
-	var fs = require('fs');
-	var file = fs.readFileSync(filename);
-	return parse(file);
+	if(fs === undefined) fs = require('fs');
+	return parse(fs.readFileSync(filename));
 }
 
 function readSync(blob, options) {
-	var o = options || {};
-	switch((o.type || "base64")) {
+	switch(options !== undefined && options.type !== undefined ? options.type : "base64") {
 		case "file": return readFileSync(blob);
-		case "base64": blob = Base64.decode(blob);
-		/* falls through */
-		case "binary": blob = s2a(blob); break;
+		case "base64": return parse(s2a(Base64.decode(blob)));
+		case "binary": return parse(s2a(blob));
 	}
@@ -423,38 +407,40 @@ return parse(blob);
 
-this.read = readSync;
-this.parse = parse;
-return this;
-})();
-
 /** 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_CLSID = '00000000000000000000000000000000';
+var consts = {
 	/* 2.1 Compund File Sector Numbers and Types */
-	var MAXREGSECT = 0xFFFFFFFA;
-	var DIFSECT = 0xFFFFFFFC;
-	var FATSECT = 0xFFFFFFFD;
-	var ENDOFCHAIN = 0xFFFFFFFE;
-	var FREESECT = 0xFFFFFFFF;
+	MAXREGSECT: -6,
+	DIFSECT: -4,
+	FATSECT: -3,
+	ENDOFCHAIN: ENDOFCHAIN,
+	FREESECT: -1,
 	/* 2.2 Compound File Header */
-	var HEADER_SIGNATURE = 'd0cf11e0a1b11ae1';
-	var HEADER_MINOR_VERSION = '3e00';
-	var MAXREGSID = 0xFFFFFFFA;
-	var NOSTREAM = 0xFFFFFFFF;
-	var HEADER_CLSID = '00000000000000000000000000000000';
+	HEADER_SIGNATURE: HEADER_SIGNATURE,
+	HEADER_MINOR_VERSION: '3e00',
+	MAXREGSID: -6,
+	NOSTREAM: -1,
+	HEADER_CLSID: HEADER_CLSID,
 	/* 2.6.1 Compound File Directory Entry */
-	var EntryTypes = ['unknown','storage','stream','lockbytes','property','root'];
-}
+	EntryTypes: ['unknown','storage','stream','lockbytes','property','root']
+};
 
-var CFB_utils = {
+exports.read = readSync;
+exports.parse = parse;
+exports.utils = {
 	ReadShift: ReadShift,
 	CheckField: CheckField,
 	prep_blob: prep_blob,
-	bconcat: bconcat
+	bconcat: bconcat,
+	consts: consts
 };
 
-if(typeof require !== 'undefined' && typeof exports !== 'undefined') {
-	var fs = require('fs');
-	exports.read = CFB.read;
-	exports.parse = CFB.parse;
-	exports.utils = CFB_utils;
-	exports.version = CFB.version;
-}
+return exports;
+})();
+
+if(typeof require !== 'undefined' && typeof module !== 'undefined' && typeof DO_NOT_EXPORT_CFB === 'undefined') { module.exports = CFB; }

dist/cfb.min.js

 /* cfb.js (C) 2013-2014 SheetJS -- http://sheetjs.com */
-var Base64=function(){var map="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";return{decode:function(input,utf8){var o="";var c1,c2,c3;var e1,e2,e3,e4;input=input.replace(/[^A-Za-z0-9\+\/\=]/g,"");for(var i=0;i<input.length;){e1=map.indexOf(input.charAt(i++));e2=map.indexOf(input.charAt(i++));e3=map.indexOf(input.charAt(i++));e4=map.indexOf(input.charAt(i++));c1=e1<<2|e2>>4;c2=(e2&15)<<4|e3>>2;c3=(e3&3)<<6|e4;o+=String.fromCharCode(c1);if(e3!=64){o+=String.fromCharCode(c2)}if(e4!=64){o+=String.fromCharCode(c3)}}return o}}}();function s2a(s){if(typeof Buffer!=="undefined")return new Buffer(s,"binary");var w=s.split("").map(function(x){return x.charCodeAt(0)&255});return w}var __toBuffer;if(typeof Buffer!=="undefined"){Buffer.prototype.hexlify=function(){return this.toString("hex")};Buffer.prototype.utf16le=function(s,e){return this.toString("utf16le",s,e).replace(/\u0000/,"").replace(/[\u0001-\u0006]/,"!")};Buffer.prototype.utf8=function(s,e){return this.toString("utf8",s,e)};__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&32768))return u;return(65535-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&2147483648))return u;return(4294967295-u+1)*-1};var __hexlify=function(b){return b.map(function(x){return(x<16?"0":"")+x.toString(16)}).join("")};var __utf16le=function(b,s,e){if(b.utf16le)return b.utf16le(s,e);var ss=[];for(var i=s;i<e;i+=2)ss.push(String.fromCharCode(__readUInt16LE(b,i)));return ss.join("").replace(/\u0000/,"").replace(/[\u0001-\u0006]/,"!")};var __utf8=function(b,s,e){if(b.utf8)return b.utf8(s,e);var ss=[];for(var i=s;i<e;i++)ss.push(String.fromCharCode(__readUInt8(b,i)));return ss.join("")};function bconcat(bufs){return typeof Buffer!=="undefined"?Buffer.concat(bufs):[].concat.apply([],bufs)}function ReadShift(size,t){var o,oo=[],w,vv;t=t||"u";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:case 16:o=this.toString("hex",this.l,this.l+size);break;case"utf8":size=t;o=__utf8(this,this.l,this.l+size);break;case"utf16le":size=2*t;o=__utf16le(this,this.l,this.l+size);break;case"cstr":size=0;o="";while((w=__readUInt8(this,this.l+size++))!==0)oo.push(String.fromCharCode(w));o=oo.join("");break;case"wstr":size=0;o="";while((w=__readUInt16LE(this,this.l+size))!==0){oo.push(String.fromCharCode(w));size+=2}size+=2;break}this.l+=size;return o}function CheckField(hexstr,fld){var b=this.slice(this.l,this.l+hexstr.length/2);var m=b.hexlify?b.hexlify():__hexlify(b);if(m!==hexstr)throw(fld||"")+"Expected "+hexstr+" saw "+m;this.l+=hexstr.length/2}function prep_blob(blob,pos){blob.read_shift=ReadShift.bind(blob);blob.chk=CheckField;blob.l=pos||0;var read=ReadShift.bind(blob),chk=CheckField.bind(blob);return[read,chk]}var CFB=function(){this.version="0.9.1";function parse(file){var mver=3;var ssz=512;var mssz=64;var nds=0;var nfs=0;var nmfs=0;var ndfs=0;var dir_start=0;var minifat_start=0;var difat_start=0;var ms_cutoff_size=4096;var minifat_store=0;var minifat_size=0;var fat_addrs=[];var blob=file.slice(0,512);prep_blob(blob);var read=ReadShift.bind(blob),chk=CheckField.bind(blob);var j=0,q;chk(HEADER_SIGNATURE,"Header Signature: ");chk(HEADER_CLSID,"CLSID: ");read(2);mver=read(2);switch(mver){case 3:ssz=512;break;case 4:ssz=4096;break;default:throw"Major Version: Expected 3 or 4 saw "+mver}var pos=blob.l;blob=file.slice(0,ssz);prep_blob(blob,pos);read=ReadShift.bind(blob);chk=CheckField.bind(blob);var header=file.slice(0,ssz);chk("feff","Byte Order: ");switch(q=read(2)){case 9:if(mver!==3)throw"MajorVersion/SectorShift Mismatch";break;case 12:if(mver!==4)throw"MajorVersion/SectorShift Mismatch";break;default:throw"Sector Shift: Expected 9 or 12 saw "+q}chk("0600","Mini Sector Shift: ");chk("000000000000","Mini Sector Shift: ");nds=read(4);if(mver===3&&nds!==0)throw"# Directory Sectors: Expected 0 saw "+nds;nfs=read(4);dir_start=read(4);read(4);chk("00100000","Mini Stream Cutoff Size: ");minifat_start=read(4);nmfs=read(4);difat_start=read(4);ndfs=read(4);for(j=0;blob.l!=512;){if((q=read(4))>=MAXREGSECT)break;fat_addrs[j++]=q}var nsectors=Math.ceil((file.length-ssz)/ssz);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);function sleuth_fat(idx,cnt){if(idx===ENDOFCHAIN){if(cnt!==0)throw"DIFAT chain shorter than expected";return}if(idx!==FREESECT){var sector=sectors[idx];for(var i=0;i!=ssz/4-1;++i){if((q=__readUInt32LE(sector,i*4))===ENDOFCHAIN)break;fat_addrs.push(q)}sleuth_fat(__readUInt32LE(sector,ssz-4),cnt-1)}}sleuth_fat(difat_start,ndfs);function get_buffer(byte_addr,bytes){var addr=fat_addrs[Math.floor(byte_addr*4/ssz)];if(ssz-byte_addr*4%ssz<(bytes||0))throw"FAT boundary crossed: "+byte_addr+" "+bytes+" "+ssz;return sectors[addr].slice(byte_addr*4%ssz)}function get_buffer_u32(byte_addr){return __readUInt32LE(get_buffer(byte_addr,4),0)}function get_next_sector(idx){return get_buffer_u32(idx)}var chkd=new Array(sectors.length),sector_list=[];var get_sector=function get_sector(k){return sectors[k]};for(i=0;i!=sectors.length;++i){var buf=[],k=(i+dir_start)%sectors.length;if(chkd[k])continue;for(j=k;j<=MAXREGSECT;buf.push(j),j=get_next_sector(j))chkd[j]=true;sector_list[k]={nodes:buf};sector_list[k].data=__toBuffer(Array(buf.map(get_sector)))}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";var files={},Paths=[],FileIndex=[],FullPaths=[],FullPathDir={};function read_directory(idx){var blob,read,w;var sector=sector_list[idx].data;for(var i=0;i!=sector.length;i+=128){blob=sector.slice(i,i+128);prep_blob(blob,64);read=ReadShift.bind(blob);var namelen=read(2);if(namelen===0)return;var name=__utf16le(blob,0,namelen-(Paths.length?2:0));Paths.push(name);var o={name:name};o.type=EntryTypes[read(1)];o.color=read(1);o.left=read(4);if(o.left===NOSTREAM)delete o.left;o.right=read(4);if(o.right===NOSTREAM)delete o.right;o.child=read(4);if(o.child===NOSTREAM)delete o.child;o.clsid=read(16);o.state=read(4);var ctime=read(8);if(ctime!="0000000000000000")o.ctime=ctime;var mtime=read(8);if(mtime!="0000000000000000")o.mtime=mtime;o.start=read(4);o.size=read(4);if(o.type==="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>=ms_cutoff_size){o.storage="fat";if(!sector_list[o.start]&&dir_start>0)o.start=(o.start+dir_start)%sectors.length;sector_list[o.start].name=o.name;o.content=sector_list[o.start].data.slice(0,o.size);prep_blob(o.content)}else{o.storage="minifat";w=o.start*mssz;if(minifat_store!==ENDOFCHAIN&&o.start!==ENDOFCHAIN){o.content=sector_list[minifat_store].data.slice(w,w+o.size);prep_blob(o.content)}}if(o.ctime){var ct=blob.slice(blob.l-24,blob.l-16);var c2=__readUInt32LE(ct,4)/1e7*Math.pow(2,32)+__readUInt32LE(ct,0)/1e7;o.ct=new Date((c2-11644473600)*1e3)}if(o.mtime){var mt=blob.slice(blob.l-16,blob.l-8);var m2=__readUInt32LE(mt,4)/1e7*Math.pow(2,32)+__readUInt32LE(mt,0)/1e7;o.mt=new Date((m2-11644473600)*1e3)}files[name]=o;FileIndex.push(o)}}read_directory(dir_start);function build_full_paths(Dir,pathobj,paths,patharr){var i;var dad=new Array(patharr.length);var q=new Array(patharr.length);for(i=0;i!=dad.length;++i){dad[i]=q[i]=i;paths[i]=patharr[i]}while(q.length>0){for(i=q[0];typeof i!=="undefined";i=q.shift()){if(dad[i]===i){if(Dir[i].left&&dad[Dir[i].left]!=Dir[i].left)dad[i]=dad[Dir[i].left];if(Dir[i].right&&dad[Dir[i].right]!=Dir[i].right)dad[i]=dad[Dir[i].right]}if(Dir[i].child)dad[Dir[i].child]=i;if(Dir[i].left){dad[Dir[i].left]=dad[i];q.push(Dir[i].left)}if(Dir[i].right){dad[Dir[i].right]=dad[i];q.push(Dir[i].right)}}for(i=1;i!=dad.length;++i)if(dad[i]===i){if(Dir[i].right&&dad[Dir[i].right]!=Dir[i].right)dad[i]=dad[Dir[i].right];else if(Dir[i].left&&dad[Dir[i].left]!=Dir[i].left)dad[i]=dad[Dir[i].left]}}for(i=1;i!==paths.length;++i){if(Dir[i].type==="unknown")continue;var j=dad[i];if(j===0)paths[i]=paths[0]+"/"+paths[i];else while(j!==0){paths[i]=paths[j]+"/"+paths[i];j=dad[j]}dad[i]=0}paths[0]+="/";for(i=1;i!==paths.length;++i)if(Dir[i].type!=="stream")paths[i]+="/";for(i=0;i!==paths.length;++i)pathobj[paths[i]]=FileIndex[i]}build_full_paths(FileIndex,FullPathDir,FullPaths,Paths);var root_name=Paths.shift();Paths.root=root_name;function find_path(path){if(path[0]==="/")path=root_name+path;var UCNames=(path.indexOf("/")!==-1?FullPaths:Paths).map(function(x){return x.toUpperCase()});var UCPath=path.toUpperCase();var w=UCNames.indexOf(UCPath);if(w===-1)return null;return path.indexOf("/")!==-1?FileIndex[w]:files[Paths[w]]}var rval={raw:{header:header,sectors:sectors},FileIndex:FileIndex,FullPaths:FullPaths,FullPathDir:FullPathDir,find:find_path};return rval}function readFileSync(filename){var fs=require("fs");var file=fs.readFileSync(filename);return parse(file)}function readSync(blob,options){var o=options||{};switch(o.type||"base64"){case"file":return readFileSync(blob);case"base64":blob=Base64.decode(blob);case"binary":blob=s2a(blob);break}return parse(blob)}this.read=readSync;this.parse=parse;return this}();{var MAXREGSECT=4294967290;var DIFSECT=4294967292;var FATSECT=4294967293;var ENDOFCHAIN=4294967294;var FREESECT=4294967295;var HEADER_SIGNATURE="d0cf11e0a1b11ae1";var HEADER_MINOR_VERSION="3e00";var MAXREGSID=4294967290;var NOSTREAM=4294967295;var HEADER_CLSID="00000000000000000000000000000000";var EntryTypes=["unknown","storage","stream","lockbytes","property","root"]}var CFB_utils={ReadShift:ReadShift,CheckField:CheckField,prep_blob:prep_blob,bconcat:bconcat};if(typeof require!=="undefined"&&typeof exports!=="undefined"){var fs=require("fs");exports.read=CFB.read;exports.parse=CFB.parse;exports.utils=CFB_utils;exports.version=CFB.version}
+var Base64=function(){var map="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";return{decode:function(input){var o="";var c1,c2,c3;var e1,e2,e3,e4;input=input.replace(/[^\w\+\/\=]/g,"");for(var i=0;i<input.length;){e1=map.indexOf(input.charAt(i++));e2=map.indexOf(input.charAt(i++));c1=e1<<2|e2>>4;o+=String.fromCharCode(c1);e3=map.indexOf(input.charAt(i++));c2=(e2&15)<<4|e3>>2;if(e3!==64){o+=String.fromCharCode(c2)}e4=map.indexOf(input.charAt(i++));c3=(e3&3)<<6|e4;if(e4!==64){o+=String.fromCharCode(c3)}}return o}}}();var chr0=/\u0000/g,chr1=/[\u0001-\u0006]/;var s2a,_s2a;s2a=_s2a=function _s2a(s){return s.split("").map(function(x){return x.charCodeAt(0)&255})};var __toBuffer,___toBuffer;__toBuffer=___toBuffer=function(bufs){var x=[];for(var i=0;i<bufs[0].length;++i){x.push.apply(x,bufs[0][i])}return x};var __utf16le,___utf16le;__utf16le=___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,"").replace(chr1,"!")};var __hexlify,___hexlify;__hexlify=___hexlify=function(b,s,l){return b.slice(s,s+l).map(function(x){return(x<16?"0":"")+x.toString(16)}).join("")};var bconcat=function(bufs){return[].concat.apply([],bufs)};if(typeof Buffer!=="undefined"){__utf16le=function(b,s,e){if(!Buffer.isBuffer(b))return ___utf16le(b,s,e);return b.toString("utf16le",s,e).replace(chr0,"").replace(chr1,"!")};__hexlify=function(b,s,l){return Buffer.isBuffer(b)?b.toString("hex",s,s+l):___hexlify(b,s,l)};__toBuffer=function(bufs){return bufs[0].length>0&&Buffer.isBuffer(bufs[0][0])?Buffer.concat(bufs[0]):___toBuffer(bufs)};s2a=function(s){return Buffer(s,"binary")};bconcat=function(bufs){return Buffer.isBuffer(bufs[0])?Buffer.concat(bufs):[].concat.apply([],bufs)}}var __readUInt8=function(b,idx){return b[idx]};var __readUInt16LE=function(b,idx){return b[idx+1]*(1<<8)+b[idx]};var __readInt16LE=function(b,idx){var u=b[idx+1]*(1<<8)+b[idx];return u<32768?u:(65535-u+1)*-1};var __readUInt32LE=function(b,idx){return b[idx+3]*(1<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]};var __readInt32LE=function(b,idx){return(b[idx+3]<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]};function ReadShift(size,t){var oI,oS,type=0;switch(size){case 1:oI=__readUInt8(this,this.l);break;case 2:oI=(t!=="i"?__readUInt16LE:__readInt16LE)(this,this.l);break;case 4:oI=__readInt32LE(this,this.l);break;case 16:type=2;oS=__hexlify(this,this.l,size)}this.l+=size;if(type===0)return oI;return oS}function CheckField(hexstr,fld){var m=__hexlify(this,this.l,hexstr.length>>1);if(m!==hexstr)throw fld+"Expected "+hexstr+" saw "+m;this.l+=hexstr.length>>1}function prep_blob(blob,pos){blob.l=pos;blob.read_shift=ReadShift;blob.chk=CheckField}var CFB=function _CFB(){var exports={};exports.version="0.10.1";function parse(file){var mver=3;var ssz=512;var nmfs=0;var ndfs=0;var dir_start=0;var minifat_start=0;var difat_start=0;var fat_addrs=[];var blob=file.slice(0,512);prep_blob(blob,0);mver=check_get_mver(blob);switch(mver){case 3:ssz=512;break;case 4:ssz=4096;break;default:throw"Major Version: Expected 3 or 4 saw "+mver}if(ssz!==512){blob=file.slice(0,ssz);prep_blob(blob,28)}var header=file.slice(0,ssz);check_shifts(blob,mver);var nds=blob.read_shift(4,"i");if(mver===3&&nds!==0)throw"# Directory Sectors: Expected 0 saw "+nds;blob.l+=4;dir_start=blob.read_shift(4,"i");blob.l+=4;blob.chk("00100000","Mini Stream Cutoff Size: ");minifat_start=blob.read_shift(4,"i");nmfs=blob.read_shift(4,"i");difat_start=blob.read_shift(4,"i");ndfs=blob.read_shift(4,"i");for(var q,j=0;j<109;++j){q=blob.read_shift(4,"i");if(q<0)break;fat_addrs[j]=q}var sectors=sectorify(file,ssz);sleuth_fat(difat_start,ndfs,sectors,ssz,fat_addrs);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";var files={},Paths=[],FileIndex=[],FullPaths=[],FullPathDir={};read_directory(dir_start,sector_list,sectors,Paths,nmfs,files,FileIndex);build_full_paths(FileIndex,FullPathDir,FullPaths,Paths);var root_name=Paths.shift();Paths.root=root_name;var find_path=make_find_path(FullPaths,Paths,FileIndex,files,root_name);return{raw:{header:header,sectors:sectors},FileIndex:FileIndex,FullPaths:FullPaths,FullPathDir:FullPathDir,find:find_path}}function check_get_mver(blob){blob.chk(HEADER_SIGNATURE,"Header Signature: ");blob.chk(HEADER_CLSID,"CLSID: ");blob.l+=2;return blob.read_shift(2,"u")}function check_shifts(blob,mver){var shift=9;blob.chk("feff","Byte Order: ");switch(shift=blob.read_shift(2)){case 9:if(mver!==3)throw"MajorVersion/SectorShift Mismatch";break;case 12:if(mver!==4)throw"MajorVersion/SectorShift Mismatch";break;default:throw"Sector Shift: Expected 9 or 12 saw "+shift}blob.chk("0600","Mini Sector Shift: ");blob.chk("000000000000","Reserved: ")}function sectorify(file,ssz){var nsectors=Math.ceil(file.length/ssz)-1;var sectors=new Array(nsectors);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}function build_full_paths(FI,FPD,FP,Paths){var i=0,L=0,R=0,C=0,j=0,pl=Paths.length;var dad=new Array(pl),q=new Array(pl);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&&dad[L]!==L)dad[i]=dad[L];if(R!==-1&&dad[R]!==R)dad[i]=dad[R]}if(C!==-1)dad[C]=i;if(L!==-1){dad[L]=dad[i];q.push(L)}if(R!==-1){dad[R]=dad[i];q.push(R)}}for(i=1;i!==pl;++i)if(dad[i]===i){if(R!==-1&&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)continue;j=dad[i];if(j===0)FP[i]=FP[0]+"/"+FP[i];else while(j!==0){FP[i]=FP[j]+"/"+FP[i];j=dad[j]}dad[i]=0}FP[0]+="/";for(i=1;i<pl;++i){if(FI[i].type!==2)FP[i]+="/";FPD[FP[i]]=FI[i]}}function make_find_path(FullPaths,Paths,FileIndex,files,root_name){var UCFullPaths=new Array(FullPaths.length);var UCPaths=new Array(Paths.length),i;for(i=0;i<FullPaths.length;++i)UCFullPaths[i]=FullPaths[i].toUpperCase();for(i=0;i<Paths.length;++i)UCPaths[i]=Paths[i].toUpperCase();return function find_path(path){var k;if(path.charCodeAt(0)===47){k=true;path=root_name+path}else k=path.indexOf("/")!==-1;var UCPath=path.toUpperCase();var w=k===true?UCFullPaths.indexOf(UCPath):UCPaths.indexOf(UCPath);if(w===-1)return null;return k===true?FileIndex[w]:files[Paths[w]]}}function sleuth_fat(idx,cnt,sectors,ssz,fat_addrs){var q;if(idx===ENDOFCHAIN){if(cnt!==0)throw"DIFAT chain shorter than expected"}else if(idx!==-1){var sector=sectors[idx],m=(ssz>>>2)-1;for(var i=0;i<m;++i){if((q=__readInt32LE(sector,i*4))===ENDOFCHAIN)break;fat_addrs.push(q)}sleuth_fat(__readInt32LE(sector,ssz-4),cnt-1,sectors,ssz,fat_addrs)}}function make_sector_list(sectors,dir_start,fat_addrs,ssz){var sl=sectors.length,sector_list=new Array(sl);var chkd=new Array(sl),buf,buf_chain;var modulus=ssz-1,i,j,k,jj;for(i=0;i<sl;++i){buf=[];k=i+dir_start;if(k>=sl)k-=sl;if(chkd[k]===true)continue;buf_chain=[];for(j=k;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"FAT boundary crossed: "+j+" 4 "+ssz;j=__readInt32LE(sectors[addr],jj)}sector_list[k]={nodes:buf,data:__toBuffer([buf_chain])}}return sector_list}function read_directory(dir_start,sector_list,sectors,Paths,nmfs,files,FileIndex){var blob;var minifat_store=0,pl=Paths.length?2:0;var sector=sector_list[dir_start].data;var i=0,namelen=0,name,o,ctime,mtime;for(;i<sector.length;i+=128){blob=sector.slice(i,i+128);prep_blob(blob,64);namelen=blob.read_shift(2);if(namelen===0)continue;name=__utf16le(blob,0,namelen-pl);Paths.push(name);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")};ctime=blob.read_shift(2)+blob.read_shift(2)+blob.read_shift(2)+blob.read_shift(2);if(ctime!==0){o.ctime=ctime;o.ct=read_date(blob,blob.l-8)}mtime=blob.read_shift(2)+blob.read_shift(2)+blob.read_shift(2)+blob.read_shift(2);if(mtime!==0){o.mtime=mtime;o.mt=read_date(blob,blob.l-8)}o.start=blob.read_shift(4,"i");o.size=blob.read_shift(4,"i");if(o.type===5){minifat_store=o.start;if(nmfs>0&&minifat_store!==ENDOFCHAIN)sector_list[minifat_store].name="!StreamData"}else if(o.size>=4096){o.storage="fat";if(sector_list[o.start]===undefined)if((o.start+=dir_start)>=sectors.length)o.start-=sectors.length;sector_list[o.start].name=o.name;o.content=sector_list[o.start].data.slice(0,o.size);prep_blob(o.content,0)}else{o.storage="minifat";if(minifat_store!==ENDOFCHAIN&&o.start!==ENDOFCHAIN){o.content=sector_list[minifat_store].data.slice(o.start*MSSZ,o.start*MSSZ+o.size);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)*1e3)}var fs;function readFileSync(filename){if(fs===undefined)fs=require("fs");return parse(fs.readFileSync(filename))}function readSync(blob,options){switch(options!==undefined&&options.type!==undefined?options.type:"base64"){case"file":return readFileSync(blob);case"base64":return parse(s2a(Base64.decode(blob)));case"binary":return parse(s2a(blob))}return parse(blob)}var MSSZ=64;var ENDOFCHAIN=-2;var HEADER_SIGNATURE="d0cf11e0a1b11ae1";var HEADER_CLSID="00000000000000000000000000000000";var consts={MAXREGSECT:-6,DIFSECT:-4,FATSECT:-3,ENDOFCHAIN:ENDOFCHAIN,FREESECT:-1,HEADER_SIGNATURE:HEADER_SIGNATURE,HEADER_MINOR_VERSION:"3e00",MAXREGSID:-6,NOSTREAM:-1,HEADER_CLSID:HEADER_CLSID,EntryTypes:["unknown","storage","stream","lockbytes","property","root"]};exports.read=readSync;exports.parse=parse;exports.utils={ReadShift:ReadShift,CheckField:CheckField,prep_blob:prep_blob,bconcat:bconcat,consts:consts};return exports}();if(typeof require!=="undefined"&&typeof module!=="undefined"&&typeof DO_NOT_EXPORT_CFB==="undefined"){module.exports=CFB}
 //# sourceMappingURL=dist/cfb.min.map

package.json

 {
-	"name": "cfb",
-	"version": "0.10.0",
-	"author": "sheetjs",
-	"description": "Compound File Binary File Format extractor",
-	"keywords": [ "cfb", "compression", "office" ],
-	"bin": {
-		"cfb": "./bin/cfb"
-	},
-	"main": "./cfb",
-	"dependencies": {
-		"commander":""
-	},
-	"devDependencies": {
-		"mocha":"",
-		"xlsjs":"",
-		"uglify-js":""
-	},
-	"repository": { "type":"git", "url":"git://github.com/SheetJS/js-cfb.git" },
-	"scripts": {
-		"pretest": "make init",
-		"test": "make test"
-	},
-	"config": {
-		"blanket": {
-			"pattern": "cfb.js"
-		}
-	},
-	"bugs": { "url": "https://github.com/SheetJS/js-cfb/issues" },
-	"license": "Apache-2.0",
-	"engines": { "node": ">=0.8" }
+  "name": "cfb",
+  "version": "0.10.1",
+  "author": "sheetjs",
+  "description": "Compound File Binary File Format extractor",
+  "keywords": [ "cfb", "compression", "office" ],
+  "bin": {
+    "cfb": "./bin/cfb"
+  },
+  "main": "./cfb",
+  "files": [
+    "LICENSE",
+    "README.md",
+    "bin/",
+    "dist/",
+    "cfb.js"
+  ],
+  "dependencies": {
+    "commander":""
+  },
+  "devDependencies": {
+    "mocha":"",
+    "xlsjs":"",
+    "uglify-js":""
+  },
+  "repository": { "type":"git", "url":"git://github.com/SheetJS/js-cfb.git" },
+  "scripts": {
+    "pretest": "make init",
+    "test": "make test"
+  },
+  "config": {
+    "blanket": {
+      "pattern": "cfb.js"
+    }
+  },
+  "bugs": { "url": "https://github.com/SheetJS/js-cfb/issues" },
+  "license": "Apache-2.0",
+  "engines": { "node": ">=0.8" }
 }

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decreased by-76.32%

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