var DO_NOT_EXPORT_CFB = true; /*:: declare var Base64:any; declare var ReadShift:any; declare var CheckField:any; declare var prep_blob:any; declare var __readUInt32LE:any; declare var __readInt32LE:any; declare var __toBuffer:any; declare var __utf16le:any; declare var bconcat:any; declare var s2a:any; declare var chr0:any; declare var chr1:any; declare var new_buf:any; */ /* cfb.js (C) 2013-present SheetJS -- http://sheetjs.com */ /* vim: set ts=2: */ /*jshint eqnull:true */ /*exported CFB */ /*global module, require:false, process:false, Buffer:false, Uint8Array:false */ /*:: declare var DO_NOT_EXPORT_CFB:?boolean; type SectorEntry = { name?:string; nodes?:Array; data:RawBytes; }; type SectorList = { [k:string|number]:SectorEntry; name:?string; fat_addrs:Array; ssz:number; } type CFBFiles = {[n:string]:CFBEntry}; */ /* [MS-CFB] v20171201 */ var CFB = (function _CFB(){ var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/; exports.version = '1.0.8'; /* [MS-CFB] 2.6.4 */ function namecmp(l/*:string*/, r/*:string*/)/*:number*/ { var L = l.split("/"), R = r.split("/"); for(var i = 0, c = 0, Z = Math.min(L.length, R.length); i < Z; ++i) { if((c = L[i].length - R[i].length)) return c; if(L[i] != R[i]) return L[i] < R[i] ? -1 : 1; } return L.length - R.length; } function dirname(p/*:string*/)/*:string*/ { if(p.charAt(p.length - 1) == "/") return (p.slice(0,-1).indexOf("/") === -1) ? p : dirname(p.slice(0, -1)); var c = p.lastIndexOf("/"); return (c === -1) ? p : p.slice(0, c+1); } function filename(p/*:string*/)/*:string*/ { if(p.charAt(p.length - 1) == "/") return filename(p.slice(0, -1)); var c = p.lastIndexOf("/"); return (c === -1) ? p : p.slice(c+1); } var fs/*:: = require('fs'); */; function get_fs() { return fs || (fs = require('fs')); } function parse(file/*:RawBytes*/, options/*:CFBReadOpts*/)/*:CFBContainer*/ { 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/*:Array*/ = []; // locations of FAT sectors /* [MS-CFB] 2.2 Compound File Header */ var blob/*:CFBlob*/ = /*::(*/file.slice(0,512)/*:: :any)*/; 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; default: throw new Error("Major Version: Expected 3 or 4 saw " + mver); } /* reprocess header */ if(ssz !== 512) { blob = /*::(*/file.slice(0,ssz)/*:: :any)*/; prep_blob(blob, 28 /* blob.l */); } /* Save header for final object */ var header/*:RawBytes*/ = file.slice(0,ssz); check_shifts(blob, mver); // Number of Directory Sectors var dir_cnt/*:number*/ = 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/*:Array*/ = sectorify(file, ssz); sleuth_fat(difat_start, difat_sec_cnt, sectors, ssz, fat_addrs); /** Chains */ var sector_list/*:SectorList*/ = 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/*:CFBFiles*/ = {}, Paths/*:Array*/ = [], FileIndex/*:CFBFileIndex*/ = [], FullPaths/*:Array*/ = []; 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/*:CFBlob*/)/*:[number, number]*/ { // header signature 8 blob.chk(HEADER_SIGNATURE, 'Header Signature: '); // clsid 16 blob.chk(HEADER_CLSID, 'CLSID: '); // minor version 2 var mver/*:number*/ = blob.read_shift(2, 'u'); return [blob.read_shift(2,'u'), mver]; } function check_shifts(blob/*:CFBlob*/, mver/*:number*/)/*:void*/ { 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/*:RawBytes*/, ssz/*:number*/)/*:Array*/ { var nsectors = Math.ceil(file.length/ssz)-1; var sectors/*:Array*/ = []; 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/*:CFBFileIndex*/, FP/*:Array*/, Paths/*:Array*/)/*:void*/ { var i = 0, L = 0, R = 0, C = 0, j = 0, pl = Paths.length; var dad/*:Array*/ = [], q/*:Array*/ = []; 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]; if(q.lastIndexOf(L) < j) q.push(L); } if(R !== -1) { 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 = dad[i]; if(j === 0) FP[i] = FP[0] + "/" + FP[i]; else while(j !== 0 && j !== dad[j]) { 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] += "/"; } } function get_mfat_entry(entry/*:CFBEntry*/, payload/*:RawBytes*/, mini/*:?RawBytes*/)/*:CFBlob*/ { var start = entry.start, size = entry.size; //return (payload.slice(start*MSSZ, start*MSSZ + size)/*:any*/); 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)/*:any*/); return (bconcat(o).slice(0, entry.size)/*:any*/); } /** 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/*:number*/, cnt/*:number*/, sectors/*:Array*/, ssz/*:number*/, fat_addrs)/*:void*/ { var q/*:number*/ = 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); } 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/*:Array*/, start/*:number*/, fat_addrs/*:Array*/, ssz/*:number*/, chkd/*:?Array*/)/*:SectorEntry*/ { var buf/*:Array*/ = [], buf_chain/*:Array*/ = []; 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/*:Array*/, dir_start/*:number*/, fat_addrs/*:Array*/, ssz/*:number*/)/*:SectorList*/ { var sl = sectors.length, sector_list/*:SectorList*/ = ([]/*:any*/); var chkd/*:Array*/ = [], buf/*:Array*/ = [], buf_chain/*:Array*/ = []; var modulus = ssz - 1, i=0, j=0, k=0, jj=0; for(i=0; i < sl; ++i) { buf = ([]/*:Array*/); k = (i + dir_start); if(k >= sl) k-=sl; if(chkd[k]) continue; buf_chain = []; for(j=k; j>=0;) { chkd[j] = true; buf[buf.length] = j; buf_chain.push(sectors[j]); var addr/*:number*/ = 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); } sector_list[k] = ({nodes: buf, data:__toBuffer([buf_chain])}/*:SectorEntry*/); } return sector_list; } /* [MS-CFB] 2.6.1 Compound File Directory Entry */ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sectors/*:Array*/, Paths/*:Array*/, 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/*:CFBlob*/ = /*::(*/sector.slice(i, i+128)/*:: :any)*/; prep_blob(blob, 64); namelen = blob.read_shift(2); name = __utf16le(blob,0,namelen-pl); Paths.push(name); var o/*:CFBEntry*/ = ({ 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/*:number*/ = 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/*:number*/ = 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)/*:any*/); } 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/*:RawBytes|CFBlob*/, offset/*:number*/)/*:Date*/ { return new Date(( ( (__readUInt32LE(blob,offset+4)/1e7)*Math.pow(2,32)+__readUInt32LE(blob,offset)/1e7 ) - 11644473600)*1000); } function read_file(filename/*:string*/, options/*:CFBReadOpts*/) { get_fs(); return parse(fs.readFileSync(filename), options); } function read(blob/*:RawBytes|string*/, options/*:CFBReadOpts*/) { switch(options && options.type || "base64") { case "file": /*:: if(typeof blob !== 'string') throw "Must pass a filename when type='file'"; */return read_file(blob, options); case "base64": /*:: if(typeof blob !== 'string') throw "Must pass a base64-encoded binary string when type='file'"; */return parse(s2a(Base64.decode(blob)), options); case "binary": /*:: if(typeof blob !== 'string') throw "Must pass a binary string when type='file'"; */return parse(s2a(blob), options); } return parse(/*::typeof blob == 'string' ? new Buffer(blob, 'utf-8') : */blob, options); } function init_cfb(cfb/*:CFBContainer*/, opts/*:?any*/)/*:void*/ { 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 }/*:any*/); } if(o.CLSID) cfb.FileIndex[0].clsid = o.CLSID; seed_cfb(cfb); } function seed_cfb(cfb/*:CFBContainer*/)/*:void*/ { 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 }/*:any*/)); cfb.FullPaths.push(cfb.FullPaths[0] + nm); rebuild_cfb(cfb); } function rebuild_cfb(cfb/*:CFBContainer*/, f/*:?boolean*/)/*:void*/ { 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; var data/*:Array<[string, CFBEntry]>*/ = []; for(i = 0; i < cfb.FullPaths.length; ++i) { 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 = false; for(j = 0; j < data.length; ++j) if(data[j][0] === dad) s = true; if(!s) data.push([dad, ({ name: filename(dad).replace("/",""), type: 1, clsid: HEADER_CLSID, ct: now, mt: now, content: null }/*:any*/)]); } 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/*:CFBContainer*/, options/*:CFBWriteOpts*/)/*:RawBytes*/ { var _opts = options || {}; rebuild_cfb(cfb); var L = (function(cfb/*:CFBContainer*/)/*:Array*/{ 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; /*:: if(file.content == null) throw new Error("unreachable"); */ 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/*:number*/)/*:void*/ { for(T += w; i> 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; /*:: if(file.content == null) throw new Error("unreachable"); */ 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/*:string*/ = (i === 0 && _opts.root) || file.name; 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.content) throw new Error("unreachable"); */ if(file.size >= 0x1000) { o.l = (file.start+1) << 9; 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.content) throw new Error("unreachable"); */ if(file.size > 0 && file.size < 0x1000) { for(j = 0; j < file.size; ++j) o.write_shift(1, file.content[j]); for(; j & 0x3F; ++j) o.write_shift(1, 0); } } 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/*:CFBContainer*/, path/*:string*/)/*:?CFBEntry*/ { var UCFullPaths/*:Array*/ = cfb.FullPaths.map(function(x) { return x.toUpperCase(); }); var UCPaths/*:Array*/ = UCFullPaths.map(function(x) { var y = x.split("/"); return y[y.length - (x.slice(-1) == "/" ? 2 : 1)]; }); var k/*:boolean*/ = false; if(path.charCodeAt(0) === 47 /* "/" */) { k = true; path = UCFullPaths[0].slice(0, -1) + path; } else k = path.indexOf("/") !== -1; var UCPath/*:string*/ = path.toUpperCase(); var w/*:number*/ = 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/*:CFBContainer*/, filename/*:string*/, options/*:CFBWriteOpts*/)/*:void*/ { get_fs(); var o = _write(cfb, options); /*:: if(typeof Buffer == 'undefined' || !Buffer.isBuffer(o) || !(o instanceof Buffer)) throw new Error("unreachable"); */ fs.writeFileSync(filename, o); } function a2s(o/*:RawBytes*/)/*:string*/ { 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/*:CFBContainer*/, options/*:CFBWriteOpts*/)/*:RawBytes|string*/ { var o = _write(cfb, options); switch(options && options.type) { case "file": get_fs(); fs.writeFileSync(options.filename, (o/*:any*/)); return o; case "binary": return a2s(o); case "base64": return Base64.encode(a2s(o)); } return o; } function cfb_new(opts/*:?any*/)/*:CFBContainer*/ { var o/*:CFBContainer*/ = ({}/*:any*/); init_cfb(o, opts); return o; } function cfb_add(cfb/*:CFBContainer*/, name/*:string*/, content/*:?RawBytes*/, opts/*:?any*/)/*:CFBEntry*/ { var unsafe = opts && opts.unsafe; if(!unsafe) init_cfb(cfb); var file = !unsafe && CFB.find(cfb, name); if(!file) { var fpath/*:string*/ = 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}/*:any*/); cfb.FileIndex.push(file); cfb.FullPaths.push(fpath); if(!unsafe) CFB.utils.cfb_gc(cfb); } /*:: if(!file) throw new Error("unreachable"); */ file.content = (content/*:any*/); file.size = content ? content.length : 0; if(opts) { if(opts.CLSID) file.clsid = opts.CLSID; } return file; } function cfb_del(cfb/*:CFBContainer*/, name/*:string*/)/*:boolean*/ { 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/*:CFBContainer*/, old_name/*:string*/, new_name/*:string*/)/*:boolean*/ { 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/*:CFBContainer*/)/*:void*/ { 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, consts: consts }; return exports; })(); if(typeof require !== 'undefined' && typeof module !== 'undefined' && typeof DO_NOT_EXPORT_CFB === 'undefined') { module.exports = CFB; }