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xls.js
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/* xls.js (C) 2013 SheetJS -- http://sheetjs.com */
/* vim: set ts=2: */
/*jshint eqnull:true, funcscope:true */
var XLS = {};
(function(XLS){
if(typeof module !== "undefined" && typeof require !== 'undefined') {
if(typeof cptable === 'undefined') var cptable = require('codepage');
var current_codepage = 1252, current_cptable = cptable[1252];
}
function reset_cp() {
current_codepage = 1252; current_cptable = cptable[1252];
}
function _getchar(x) { return String.fromCharCode(x); }
/* Buffer.concat was added in the 0.8 series, so this is for older versions */
if(typeof Buffer !== "undefined" && !Buffer.concat)
Buffer.concat = function(list, length) {
if (!Array.isArray(list)) {
throw new TypeError('Usage: Buffer.concat(list, [length])');
}
if (list.length === 0) {
return new Buffer(0);
} else if (list.length === 1) {
return list[0];
}
var i, buf;
if (typeof length !== 'number') {
length = 0;
for (i = 0; i < list.length; i++) {
buf = list[i];
length += buf.length;
}
}
var buffer = new Buffer(length);
var pos = 0;
for (i = 0; i < list.length; i++) {
buf = list[i];
buf.copy(buffer, pos);
pos += buf.length;
}
return buffer;
};
var Buffers = Array;
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 Base64 = (function(){
var map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
return {
encode: function(input, utf8) {
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, "");
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) & 0xff; });
return w;
}
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); };
Buffer.prototype.lpstr = function(i) { var len = this.readUInt32LE(i); return len > 0 ? this.utf8(i+4,i+4+len-1) : "";};
Buffer.prototype.lpwstr = function(i) { var len = 2*this.readUInt32LE(i); return this.utf8(i+4,i+4+len-1);};
if(typeof cptable !== "undefined") Buffer.prototype.lpstr = function(i) {
var len = this.readUInt32LE(i);
if(len === 0) return "";
if(typeof current_cptable === "undefined") return this.utf8(i+4,i+4+len-1);
var t = Array(this.slice(i+4,i+4+len-1));
//1console.log("start", this.l, len, t);
var c, j = i+4, o = "", cc;
for(;j!=i+4+len;++j) {
c = this.readUInt8(j);
cc = current_cptable.dec[c];
if(typeof cc === 'undefined') {
c = c*256 + this.readUInt8(++j);
cc = current_cptable.dec[c];
}
if(typeof cc === 'undefined') throw "Unrecognized character " + c.toString(16);
if(c === 0) break;
o += cc;
//1console.log(cc, cc.charCodeAt(0), o, this.l);
}
return o;
};
}
Array.prototype.readUInt8 = function(idx) { return this[idx]; };
Array.prototype.readUInt16LE = function(idx) { return this[idx+1]*(1<<8)+this[idx]; };
Array.prototype.readInt16LE = function(idx) { var u = this.readUInt16LE(idx); if(!(u & 0x8000)) return u; return (0xffff - u + 1) * -1; };
Array.prototype.readUInt32LE = function(idx) { return this[idx+3]*(1<<24)+this[idx+2]*(1<<16)+this[idx+1]*(1<<8)+this[idx]; };
Array.prototype.readInt32LE = function(idx) { var u = this.readUInt32LE(idx); if(!(u & 0x80000000)) return u; return (0xffffffff - u + 1) * -1; };
Array.prototype.readDoubleLE = function(idx) { return readIEEE754(this, idx||0);};
Array.prototype.hexlify = function() { return this.map(function(x){return (x<16?"0":"") + x.toString(16);}).join(""); };
Array.prototype.utf16le = function(s,e) { var str = ""; for(var i=s; i<e; i+=2) str += String.fromCharCode(this.readUInt16LE(i)); return str.replace(/\u0000/,'').replace(/[\u0001-\u0006]/,'!'); };
Array.prototype.utf8 = function(s,e) { var str = ""; for(var i=s; i<e; i++) str += String.fromCharCode(this.readUInt8(i)); return str; };
Array.prototype.lpstr = function(i) { var len = this.readUInt32LE(i); return len > 0 ? this.utf8(i+4,i+4+len-1) : "";};
Array.prototype.lpwstr = function(i) { var len = 2*this.readUInt32LE(i); return this.utf8(i+4,i+4+len-1);};
function bconcat(bufs) { return (typeof Buffer !== 'undefined') ? Buffer.concat(bufs) : [].concat.apply([], bufs); }
function ReadShift(size, t) {
var o, w, vv, i, loc; t = t || 'u';
if(size === 'ieee754') { size = 8; t = 'f'; }
switch(size) {
case 1: o = this.readUInt8(this.l); break;
case 2: o=t==='u'?this.readUInt16LE(this.l):this.readInt16LE(this.l);break;
case 4: o = this.readUInt32LE(this.l); break;
case 8: if(t === 'f') { o = this.readDoubleLE(this.l); break; }
/* falls through */
case 16: o = this.toString('hex', this.l,this.l+size); break;
case 'utf8': size = t; o = this.utf8(this.l, this.l + size); break;
case 'utf16le': size = 2*t; o = this.utf16le(this.l, this.l + size); break;
/* [MS-OLEDS] 2.1.4 LengthPrefixedAnsiString */
case 'lpstr': o = this.lpstr(this.l); size = 5 + o.length; break;
case 'lpwstr': o = this.lpwstr(this.l); size = 5 + o.length; if(o[o.length-1] == '\u0000') size += 2; 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; o = ""; loc = this.l;
for(i = 0; i != t; ++i) {
if(this.lens && this.lens.indexOf(loc) !== -1) {
w = this.readUInt8(loc);
this.l = loc + 1;
vv = ReadShift.call(this, w ? 'dbcs' : 'sbcs', t-i);
return o + vv;
}
o += _getchar(this.readUInt16LE(loc));
loc+=2;
} break;
case 'sbcs': size = t; o = ""; loc = this.l;
for(i = 0; i != t; ++i) {
if(this.lens && this.lens.indexOf(loc) !== -1) {
w = this.readUInt8(loc);
this.l = loc + 1;
vv = ReadShift.call(this, w ? 'dbcs' : 'sbcs', t-i);
return o + vv;
}
o += _getchar(this.readUInt8(loc));
loc+=1;
} break;
case 'cstr': size = 0; o = "";
while((w=this.readUInt8(this.l + size++))!==0) o+= _getchar(w);
break;
case 'wstr': size = 0; o = "";
while((w=this.readUInt16LE(this.l +size))!==0){o+= _getchar(w);size+=2;}
size+=2; break;
}
this.l+=size; return o;
}
function CheckField(hexstr, fld) {
var m = this.slice(this.l, this.l+hexstr.length/2).hexlify('hex');
if(m !== hexstr) throw (fld||"") + 'Expected ' + hexstr + ' saw ' + m;
this.l += hexstr.length/2;
}
function WarnField(hexstr, fld) {
var m = this.slice(this.l, this.l+hexstr.length/2).hexlify('hex');
if(m !== hexstr) console.error((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];
}
/* Spreadsheet Format */
var SSF = (function() {
var SSF = {};
String.prototype.reverse=function(){return this.split("").reverse().join("");};
var _strrev = function(x) { return String(x).reverse(); };
function fill(c,l) { return new Array(l+1).join(c); }
function pad(v,d){var t=String(v);return t.length>=d?t:(fill(0,d-t.length)+t);}
/* Options */
var opts_fmt = {};
function fixopts(o){for(var y in opts_fmt) if(o[y]===undefined) o[y]=opts_fmt[y];}
SSF.opts = opts_fmt;
opts_fmt.date1904 = 0;
opts_fmt.output = "";
opts_fmt.mode = "";
var table_fmt = {
1: '0',
2: '0.00',
3: '#,##0',
4: '#,##0.00',
9: '0%',
10: '0.00%',
11: '0.00E+00',
12: '# ?/?',
13: '# ??/??',
14: 'mm/dd/yy',
15: 'd-mmm-yy',
16: 'd-mmm',
17: 'mmm-yy',
18: 'h:mm AM/PM',
19: 'h:mm:ss AM/PM',
20: 'h:mm',
21: 'h:mm:ss',
22: 'm/d/yy h:mm',
37: '#,##0 ;(#,##0)',
38: '#,##0 ;[Red](#,##0)',
39: '#,##0.00;(#,##0.00)',
40: '#,##0.00;[Red](#,##0.00)',
45: 'mm:ss',
46: '[h]:mm:ss',
47: 'mmss.0',
48: '##0.0E+0',
49: '@'
};
var days = [
['Sun', 'Sunday'],
['Mon', 'Monday'],
['Tue', 'Tuesday'],
['Wed', 'Wednesday'],
['Thu', 'Thursday'],
['Fri', 'Friday'],
['Sat', 'Saturday']
];
var months = [
['J', 'Jan', 'January'],
['F', 'Feb', 'February'],
['M', 'Mar', 'March'],
['A', 'Apr', 'April'],
['M', 'May', 'May'],
['J', 'Jun', 'June'],
['J', 'Jul', 'July'],
['A', 'Aug', 'August'],
['S', 'Sep', 'September'],
['O', 'Oct', 'October'],
['N', 'Nov', 'November'],
['D', 'Dec', 'December']
];
var general_fmt = function(v) {
if(typeof v === 'boolean') return v ? "TRUE" : "FALSE";
};
SSF._general = general_fmt;
var parse_date_code = function parse_date_code(v,opts) {
var date = Math.floor(v), time = Math.round(86400 * (v - date)), dow=0;
var dout=[], out={D:date, T:time}; fixopts(opts = (opts||{}));
if(opts.date1904) date += 1462;
if(date === 60) {dout = [1900,2,29]; dow=3;}
else {
if(date > 60) --date;
/* 1 = Jan 1 1900 */
var d = new Date(1900,0,1);
d.setDate(d.getDate() + date - 1);
dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
dow = d.getDay();
if(opts.mode === 'excel' && date < 60) dow = (dow + 6) % 7;
}
out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
out.S = time % 60; time = Math.floor(time / 60);
out.M = time % 60; time = Math.floor(time / 60);
out.H = time;
out.q = dow;
return out;
};
SSF.parse_date_code = parse_date_code;
var write_date = function(type, fmt, val) {
switch(type) {
case 'y': switch(fmt) { /* year */
case 'y': case 'yy': return pad(val.y % 100,2);
default: return val.y;
} break;
case 'm': switch(fmt) { /* month */
case 'm': return val.m;
case 'mm': return pad(val.m,2);
case 'mmm': return months[val.m-1][1];
case 'mmmm': return months[val.m-1][2];
case 'mmmmm': return months[val.m-1][0];
default: throw 'bad month format: ' + fmt;
} break;
case 'd': switch(fmt) { /* day */
case 'd': return val.d;
case 'dd': return pad(val.d,2);
case 'ddd': return days[val.q][0];
case 'dddd': return days[val.q][1];
default: throw 'bad day format: ' + fmt;
} break;
case 'h': switch(fmt) { /* 12-hour */
case 'h': return 1+(val.H+11)%12;
case 'hh': return pad(1+(val.H+11)%12, 2);
default: throw 'bad hour format: ' + fmt;
} break;
case 'H': switch(fmt) { /* 24-hour */
case 'h': return val.H;
case 'hh': return pad(val.H, 2);
default: throw 'bad hour format: ' + fmt;
} break;
case 'M': switch(fmt) { /* minutes */
case 'm': return val.M;
case 'mm': return pad(val.M, 2);
default: throw 'bad minute format: ' + fmt;
} break;
case 's': switch(fmt) { /* seconds */
case 's': return val.S;
case 'ss': return pad(val.S, 2);
default: throw 'bad second format: ' + fmt;
} break;
/* TODO: handle the ECMA spec format ee -> yy */
case 'e': { return val.y; } break;
case 'A': return (val.h>=12 ? 'P' : 'A') + fmt.substr(1);
default: throw 'bad format type ' + type + ' in ' + fmt;
}
};
function split_fmt(fmt) {
return fmt.reverse().split(/;(?!\\)/).reverse().map(_strrev);
}
SSF._split = split_fmt;
function eval_fmt(fmt, v, opts) {
var out = [], o = "", i = 0, c = "", lst='t', q = {}, dt;
fixopts(opts = (opts || {}));
var hr='H';
/* Tokenize */
while(i < fmt.length) {
switch((c = fmt[i])) {
case '"': /* Literal text */
for(o="";fmt[++i] !== '"';) o += fmt[(fmt[i] === '\\' ? ++i : i)];
out.push({t:'t', v:o}); break;
case '\\': out.push({t:'t', v:fmt[++i]}); ++i; break;
case '@': /* Text Placeholder */
out.push({t:'T', v:v}); ++i; break;
/* Dates */
case 'm': case 'd': case 'y': case 'h': case 's': case 'e':
if(!dt) dt = parse_date_code(v, opts);
o = fmt[i]; while(fmt[++i] === c) o+=c;
if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
if(c === 'h') c = hr;
q={t:c, v:o}; out.push(q); lst = c; break;
case 'A':
q={t:c,v:"A"};
if(fmt.substr(i, 3) === "A/P") {hr = 'h'; i+=3;}
else if(fmt.substr(i,5) === "AM/PM") { q.v = "AM"; i+=5; hr = 'h'; }
else q.t = "t";
out.push(q); lst = c; break;
case '[': /* TODO: Fix this -- ignore all conditionals and formatting */
while(fmt[i++] !== ']'); break;
default:
if("$-+/():!^&'~{}<>= ".indexOf(c) === -1)
throw 'unrecognized character ' + fmt[i] + ' in ' + fmt;
out.push({t:'t', v:c}); ++i; break;
}
}
/* walk backwards */
for(i=out.length-1, lst='t'; i >= 0; --i) {
switch(out[i].t) {
case 'h': case 'H': out[i].t = hr; lst='h'; break;
case 'd': case 'y': case 's': case 'M': case 'e': lst=out[i].t; break;
case 'm': if(lst === 's') out[i].t = 'M'; break;
}
}
/* replace fields */
for(i=0; i < out.length; ++i) {
switch(out[i].t) {
case 't': case 'T': break;
case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'A': case 'e':
out[i].v = write_date(out[i].t, out[i].v, dt);
out[i].t = 't'; break;
default: throw "unrecognized type " + out[i].t;
}
}
return out.map(function(x){return x.v;}).join("");
}
SSF._eval = eval_fmt;
function choose_fmt(fmt, v) {
if(typeof fmt === "string") fmt = split_fmt(fmt);
if(typeof v !== "number") return fmt[3];
return v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
}
var format = function format(fmt,v,o) {
fixopts(o = (o||{}));
if(fmt === 0) return general_fmt(v, o);
if(typeof fmt === 'number') fmt = table_fmt[fmt];
var f = choose_fmt(fmt, v, o);
return eval_fmt(f, v, o);
};
SSF._choose = choose_fmt;
SSF._table = table_fmt;
SSF.load = function(fmt, idx) { table_fmt[idx] = fmt; };
SSF.format = format;
return SSF;
})();
/* [MS-OLEPS] v20130118 */
/* [MS-OSHARED] v20130211 */
/* [MS-OLEPS] 2.2 PropertyType */
{
var VT_EMPTY = 0x0000;
var VT_NULL = 0x0001;
var VT_I2 = 0x0002;
var VT_I4 = 0x0003;
var VT_R4 = 0x0004;
var VT_R8 = 0x0005;
var VT_CY = 0x0006;
var VT_DATE = 0x0007;
var VT_BSTR = 0x0008;
var VT_ERROR = 0x000A;
var VT_BOOL = 0x000B;
var VT_VARIANT = 0x000C;
var VT_DECIMAL = 0x000E;
var VT_I1 = 0x0010;
var VT_UI1 = 0x0011;
var VT_UI2 = 0x0012;
var VT_UI4 = 0x0013;
var VT_I8 = 0x0014;
var VT_UI8 = 0x0015;
var VT_INT = 0x0016;
var VT_UINT = 0x0017;
var VT_LPSTR = 0x001E;
var VT_LPWSTR = 0x001F;
var VT_FILETIME = 0x0040;
var VT_BLOB = 0x0041;
var VT_STREAM = 0x0042;
var VT_STORAGE = 0x0043;
var VT_STREAMED_Object = 0x0044;
var VT_STORED_Object = 0x0045;
var VT_BLOB_Object = 0x0046;
var VT_CF = 0x0047;
var VT_CLSID = 0x0048;
var VT_VERSIONED_STREAM = 0x0049;
var VT_VECTOR = 0x1000;
var VT_ARRAY = 0x2000;
var VT_STRING = 0x0050; // 2.3.3.1.11 VtString
var VT_USTR = 0x0051; // 2.3.3.1.12 VtUnalignedString
var VT_CUSTOM = [VT_STRING, VT_USTR];
}
/* [MS-OSHARED] 2.3.3.2.2.1 Document Summary Information PIDDSI */
var DocSummaryPIDDSI = {
0x01: { n: 'CodePage', t: VT_I2 },
0x02: { n: 'Category', t: VT_STRING },
0x03: { n: 'PresentationFormat', t: VT_STRING },
0x04: { n: 'ByteCount', t: VT_I4 },
0x05: { n: 'LineCount', t: VT_I4 },
0x06: { n: 'ParagraphCount', t: VT_I4 },
0x07: { n: 'SlideCount', t: VT_I4 },
0x08: { n: 'NoteCount', t: VT_I4 },
0x09: { n: 'HiddenCount', t: VT_I4 },
0x0a: { n: 'MultimediaClipCount', t: VT_I4 },
0x0b: { n: 'Scale', t: VT_BOOL },
0x0c: { n: 'HeadingPair', t: VT_VECTOR | VT_VARIANT },
0x0d: { n: 'DocParts', t: VT_VECTOR | VT_LPSTR },
0x0e: { n: 'Manager', t: VT_STRING },
0x0f: { n: 'Company', t: VT_STRING },
0x10: { n: 'LinksDirty', t: VT_BOOL },
0x11: { n: 'CharacterCount', t: VT_I4 },
0x13: { n: 'SharedDoc', t: VT_BOOL },
0x16: { n: 'HLinksChanged', t: VT_BOOL },
0x17: { n: 'Version', t: VT_I4 },
0xFF: {}
};
/* [MS-OSHARED] 2.3.3.2.1.1 Summary Information Property Set PIDSI */
var SummaryPIDSI = {
0x01: { n: 'CodePage', t: VT_I2 },
0x02: { n: 'Title', t: VT_STRING },
0x03: { n: 'Subject', t: VT_STRING },
0x04: { n: 'Author', t: VT_STRING },
0x05: { n: 'Keywords', t: VT_STRING },
0x06: { n: 'Comments', t: VT_STRING },
0x07: { n: 'Template', t: VT_STRING },
0x08: { n: 'LastAuthor', t: VT_STRING },
0x09: { n: 'RevNumber', t: VT_STRING },
0x0A: { n: 'EditTime', t: VT_FILETIME },
0x0B: { n: 'LastPrinted', t: VT_FILETIME },
0x0C: { n: 'CreateTime', t: VT_FILETIME },
0x0D: { n: 'SaveTime', t: VT_FILETIME },
0x0E: { n: 'PageCount', t: VT_I4 },
0x0F: { n: 'WordCount', t: VT_I4 },
0x10: { n: 'CharCount', t: VT_I4 },
0x11: { n: 'Thumbnail', t: VT_CF },
0x12: { n: 'ApplicationName', t: VT_LPSTR },
0x13: { n: 'DocumentSecurity', t: VT_I4 },
0xFF: {}
};
/* [MS-OLEPS] 2.18 */
var SpecialProperties = {
0x80000000: { n: 'Locale', t: VT_UI4 },
0x80000003: { n: 'Behavior', t: VT_UI4 },
0x69696969: {}
};
(function() {
for(var y in SpecialProperties) if(SpecialProperties.hasOwnProperty(y))
DocSummaryPIDDSI[y] = SummaryPIDSI[y] = SpecialProperties[y];
})();
/* [MS-DTYP] 2.3.1 FILETIME */
/* [MS-OLEDS] 2.1.3 FILETIME (Packet Version) */
/* [MS-OLEPS] 2.8 FILETIME (Packet Version) */
function parse_FILETIME(blob) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var dwLowDateTime = read(4), dwHighDateTime = read(4);
return [dwLowDateTime, dwHighDateTime];
}
/* [MS-OSHARED] 2.3.3.1.4 Lpstr */
function parse_lpstr(blob, type, pad) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var str = read('lpstr');
if(pad) blob.l += (4 - ((str.length+1) % 4)) % 4;
return str;
}
/* [MS-OSHARED] 2.3.3.1.6 Lpwstr */
function parse_lpwstr(blob, type, pad) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var str = read('lpwstr');
if(pad) blob.l += (4 - ((str.length+1) % 4)) % 4;
return str;
}
/* [MS-OSHARED] 2.3.3.1.11 VtString */
/* [MS-OSHARED] 2.3.3.1.12 VtUnalignedString */
function parse_VtStringBase(blob, stringType, pad) {
if(stringType) switch(stringType) {
case VT_LPSTR: return parse_lpstr(blob, stringType, pad);
case VT_LPWSTR: return parse_lpwstr(blob);
default: throw "Unrecognized string type " + stringType;
}
else return parse_VtStringBase(blob, blob.read_shift(2), pad);
}
function parse_VtString(blob, t, pad) { return parse_VtStringBase(blob, t, 4); }
function parse_VtUnalignedString(blob, t) { if(!t) throw new Error("dafuq?"); return parse_VtStringBase(blob, t, 0); }
/* [MS-OSHARED] 2.3.3.1.9 VtVecUnalignedLpstrValue */
function parse_VtVecUnalignedLpstrValue(blob) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var length = read(4);
var ret = [];
for(var i = 0; i != length; ++i) ret[i] = read('lpstr');
return ret;
}
/* [MS-OSHARED] 2.3.3.1.10 VtVecUnalignedLpstr */
function parse_VtVecUnalignedLpstr(blob) {
return parse_VtVecUnalignedLpstrValue(blob);
}
/* [MS-OSHARED] 2.3.3.1.13 VtHeadingPair */
function parse_VtHeadingPair(blob) {
var headingString = parse_TypedPropertyValue(blob, VT_USTR);
var headerParts = parse_TypedPropertyValue(blob, VT_I4);
return [headingString, headerParts];
}
/* [MS-OSHARED] 2.3.3.1.14 VtVecHeadingPairValue */
function parse_VtVecHeadingPairValue(blob) {
var cElements = blob.read_shift(4);
var out = [];
for(var i = 0; i != cElements / 2; ++i) out.push(parse_VtHeadingPair(blob));
return out;
}
/* [MS-OSHARED] 2.3.3.1.15 VtVecHeadingPair */
function parse_VtVecHeadingPair(blob) {
// NOTE: When invoked, wType & padding were already consumed
return parse_VtVecHeadingPairValue(blob);
}
/* [MS-OLEPS] 2.18.1 Dictionary (uses 2.17, 2.16) */
function parse_dictionary(blob,CodePage) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var cnt = read(4);
var dict = {};
for(var j = 0; j != cnt; ++j) {
var pid = read(4);
var len = read(4);
dict[pid] = read((CodePage === 0x4B0 ?'utf16le':'utf8'), len).replace(/\u0000/g,'').replace(/[\u0001-\u0006]/g,'!');
}
if(blob.l % 4) blob.l = (blob.l>>2+1)<<2;
return dict;
}
/* [MS-OLEPS] 2.9 BLOB */
function parse_BLOB(blob) {
var size = blob.read_shift(4);
var bytes = blob.slice(blob.l,blob.l+size);
if(blob.l % 4) blob.l += (4 - (blob.l % 4)) % 4;
return bytes;
}
/* [MS-OLEPS] 2.11 ClipboardData */
function parse_ClipboardData(blob) {
// TODO
var o = {};
o.Size = blob.read_shift(4);
//o.Format = blob.read_shift(4);
blob.l += o.Size;
return o;
}
/* [MS-OLEPS] 2.14 Vector and Array Property Types */
function parse_VtVector(blob, cb) {
/* [MS-OLEPS] 2.14.2 VectorHeader */
var Length = blob.read_shift(4);
var o = [];
for(var i = 0; i != Length; ++i) {
o.push(cb(blob));
}
return o;
}
/* [MS-OLEPS] 2.15 TypedPropertyValue */
function parse_TypedPropertyValue(blob, type) {
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var t = read(2), ret;
read(2);
if(type !== VT_VARIANT)
if(t !== type && VT_CUSTOM.indexOf(type)===-1) throw new Error('Expected type ' + type + ' saw ' + t);
switch(type === VT_VARIANT ? t : type) {
case VT_I2: ret = read(2, 'i'); read(2); return ret;
case VT_I4: ret = read(4, 'i'); return ret;
case VT_BOOL: return read(4) !== 0x0;
case VT_UI4: ret = read(4); return ret;
case VT_LPSTR: return parse_lpstr(blob, t, 4).replace(/\u0000/g,'');
case VT_LPWSTR: return parse_lpwstr(blob);
case VT_FILETIME: return parse_FILETIME(blob);
case VT_BLOB: return parse_BLOB(blob);
case VT_CF: return parse_ClipboardData(blob);
case VT_STRING: return parse_VtString(blob, t, 4).replace(/\u0000/g,'');
case VT_USTR: return parse_VtUnalignedString(blob, t, 4).replace(/\u0000/g,'');
case VT_VECTOR | VT_VARIANT: return parse_VtVecHeadingPair(blob);
case VT_VECTOR | VT_LPSTR: return parse_VtVecUnalignedLpstr(blob);
default: throw new Error("TypedPropertyValue unrecognized type " + type + " " + t);
}
}
function parse_VTVectorVariant(blob) {
/* [MS-OLEPS] 2.14.2 VectorHeader */
var Length = blob.read_shift(4);
if(Length % 2 !== 0) throw new Error("VectorHeader Length=" + Length + " must be even");
var o = [];
for(var i = 0; i != Length; ++i) {
o.push(parse_TypedPropertyValue(blob, VT_VARIANT));
}
return o;
}
/* [MS-OLEPS] 2.20 PropertySet */
function parse_PropertySet(blob, PIDSI) {
var start_addr = blob.l;
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var size = read(4);
var NumProps = read(4);
var Props = [], i = 0;
var CodePage = 0;
var Dictionary = -1, DictObj;
for(i = 0; i != NumProps; ++i) {
var PropID = read(4);
var Offset = read(4);
Props[i] = [PropID, Offset + start_addr];
}
var PropH = {};
for(i = 0; i != NumProps; ++i) {
if(blob.l !== Props[i][1]) {
throw new Error("Read Error: Expected address " + Props[i][1] + ' at ' + blob.l + ' :' + i);
}
if(PIDSI) {
var piddsi = PIDSI[Props[i][0]];
PropH[piddsi.n] = parse_TypedPropertyValue(blob, piddsi.t);
if(piddsi.n == "CodePage") switch(PropH[piddsi.n]) {
/* TODO: Generate files under every codepage */
case 10000: break; // OSX Roman
case 1252: break; // Windows Latin
case 874: // SB Windows Thai
case 1250: // SB Windows Central Europe
case 1251: // SB Windows Cyrillic
case 1253: // SB Windows Greek
case 1254: // SB Windows Turkish
case 1255: // SB Windows Hebrew
case 1256: // SB Windows Arabic
case 932: // DB Windows Japanese Shift-JIS
case 936: // DB Windows Simplified Chinese GBK
case 949: // DB Windows Korean
case 950: // DB Windows Traditional Chinese Big5
case 1200: // UTF16LE
case 1201: // UTF16BE
case 65000: case -536: // UTF-7
case 65001: case -535: // UTF-8
break;
default: throw new Error("Unsupported CodePage: " + PropH[piddsi.n]);
}
} else {
if(Props[i][0] === 0x1) {
CodePage = PropH.CodePage = parse_TypedPropertyValue(blob, VT_I2);
if(Dictionary !== -1) {
var oldpos = blob.l;
blob.l = Props[Dictionary][1];
DictObj = parse_dictionary(blob,CodePage);
blob.l = oldpos;
}
} else if(Props[i][0] === 0) {
if(CodePage === 0) { Dictionary = i; blob.l = Props[i+1][1]; continue; }
DictObj = parse_dictionary(blob,CodePage);
} else {
var name = DictObj[Props[i][0]];
var val;
/* [MS-OSHARED] 2.3.3.2.3.1.2 + PROPVARIANT */
switch(blob[blob.l]) {
case VT_BLOB: blob.l += 4; val = parse_BLOB(blob); break;
case VT_LPSTR: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]); break;
case VT_LPWSTR: blob.l += 4; val = parse_VtString(blob, blob[blob.l-4]); break;
case VT_I4: blob.l += 4; val = read(4, 'i'); break;
case VT_UI4: blob.l += 4; val = read(4); break;
case VT_R8: blob.l += 4; val = read(8, 'f'); break;
case VT_BOOL: blob.l += 4; val = parsebool(blob, 4); break;
case VT_FILETIME: blob.l += 4; val = parse_FILETIME(blob); break;
default: throw new Error("unparsed value: " + blob[blob.l]);
}
PropH[name] = val;
}
}
}
blob.l = start_addr + size; /* step ahead to skip padding */
return PropH;
}
/* [MS-OLEPS] 2.21 PropertySetStream */
function parse_PropertySetStream(file, PIDSI) {
var blob = file.content;
prep_blob(blob);
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
var NumSets, FMTID0, FMTID1, Offset0, Offset1;
chk('feff', 'Byte Order: ');
var vers = read(2); // TODO: check version
var SystemIdentifier = read(4);
chk(HEADER_CLSID, 'CLSID: ');
NumSets = read(4);
if(NumSets !== 1 && NumSets !== 2) throw "Unrecognized #Sets: " + NumSets;
FMTID0 = read(16); Offset0 = read(4);
if(NumSets === 1 && Offset0 !== blob.l) throw "Length mismatch";
else if(NumSets === 2) { FMTID1 = read(16); Offset1 = read(4); }
var PSet0 = parse_PropertySet(blob, PIDSI);
var rval = { SystemIdentifier: SystemIdentifier };
for(var y in PSet0) rval[y] = PSet0[y];
//rval.blob = blob;
rval.FMTID = FMTID0;
//rval.PSet0 = PSet0;
if(NumSets === 1) return rval;
var PSet1 = parse_PropertySet(blob, null);
for(y in PSet1) rval[y] = PSet1[y];
rval.FMTID = [FMTID0, FMTID1]; // TODO: verify FMTID0/1
return rval;
}
/* [MS-CFB] v20130118 */
if(typeof module !== "undefined" && typeof require !== 'undefined') CFB = require('cfb');
else var CFB = (function(){
var exports = {};
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
var ndfs = 0; // number of DIFAT sectors
var dir_start = 0; // first directory sector location
var minifat_start = 0; // first mini FAT sector location
var difat_start = 0; // first mini FAT sector location
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
/* [MS-CFB] 2.2 Compound File Header */
var blob = file.slice(0,512);
prep_blob(blob);
var read = ReadShift.bind(blob), chk = CheckField.bind(blob);
//var wrn = WarnField.bind(blob);
var j = 0, q;
// header signature 8
chk(HEADER_SIGNATURE, 'Header Signature: ');
// clsid 16
chk(HEADER_CLSID, 'CLSID: ');
// minor version 2
//wrn(HEADER_MINOR_VERSION, 'Minor Version: ');
read(2);
// major version 3
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;
}
// reprocess header
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);
// Byte Order TODO
chk('feff', 'Byte Order: ');
// 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);
if(mver === 3 && nds !== 0) throw '# Directory Sectors: Expected 0 saw ' + nds;
// Number of FAT Sectors
nfs = read(4);
// First Directory Sector Location
dir_start = read(4);
// Transaction Signature TODO
read(4);
// Mini Stream Cutoff Size TODO
chk('00100000', 'Mini Stream Cutoff Size: ');
// First Mini FAT Sector Location
minifat_start = read(4);
// Number of Mini FAT Sectors
nmfs = read(4);
// First DIFAT sector location
difat_start = read(4);
// Number of DIFAT Sectors
ndfs = read(4);
// Grab FAT Sector Locations
for(j = 0; blob.l != 512; ) {
if((q = read(4))>=MAXREGSECT) break;
fat_addrs[j++] = q;
}
/** 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);
/** 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) {
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 = sector.readUInt32LE(i*4)) === ENDOFCHAIN) break;
fat_addrs.push(q);
}
sleuth_fat(sector.readUInt32LE(ssz-4),cnt - 1);
}
}
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));
}
function get_buffer_u32(byte_addr) {
return get_buffer(byte_addr,4).readUInt32LE(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 = Buffers(buf.map(get_sector)).toBuffer();
}
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) {
blob = sector.slice(i, i+128);
prep_blob(blob, 64);
read = ReadShift.bind(blob);