forked from sheetjs/sheetjs
237 lines
14 KiB
JavaScript
237 lines
14 KiB
JavaScript
function read_double_le(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ {
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var s = 1 - 2 * (b[idx + 7] >>> 7);
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var e = ((b[idx + 7] & 0x7f) << 4) + ((b[idx + 6] >>> 4) & 0x0f);
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var m = (b[idx+6]&0x0f);
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for(var i = 5; i >= 0; --i) m = m * 256 + b[idx + i];
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if(e == 0x7ff) return m == 0 ? s * Infinity : NaN;
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if(e == 0) e = -1022;
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else { e -= 1023; m += Math.pow(2,52); }
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return s * Math.pow(2, e - 52) * m;
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}
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function write_double_le(b/*:RawBytes|CFBlob*/, v/*:number*/, idx/*:number*/) {
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var bs = ((v < 0 || 1/v == -Infinity) ? 1 : 0) << 7, e = 0, m = 0;
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var av = bs ? -v : v;
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if(!isFinite(av)) { e = 0x7ff; m = isNaN(v) ? 0x6969 : 0; }
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else if(av == 0) e = m = 0;
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else {
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e = Math.floor(Math.log(av) / Math.LN2);
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m = av * Math.pow(2, 52 - e);
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if(e <= -1023 && (!isFinite(m) || m < Math.pow(2,52))) { e = -1022; }
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else { m -= Math.pow(2,52); e+=1023; }
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}
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for(var i = 0; i <= 5; ++i, m/=256) b[idx + i] = m & 0xff;
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b[idx + 6] = ((e & 0x0f) << 4) | m & 0xf;
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b[idx + 7] = (e >> 4) | bs;
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}
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var __toBuffer = function(bufs/*:Array<any>*/) { var x=[],w=10240; for(var i=0;i<bufs[0].length;++i) for(var j=0,L=bufs[0][i].length;j<L;j+=w) x.push.apply(x, bufs[0][i].slice(j,j+w)); return x; };
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var ___toBuffer = __toBuffer;
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var __utf16le = function(b/*:RawBytes|CFBlob*/,s/*:number*/,e/*:number*/)/*:string*/ { var ss/*:Array<string>*/=[]; for(var i=s; i<e; i+=2) ss.push(String.fromCharCode(__readUInt16LE(b,i))); return ss.join("").replace(chr0,''); };
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var ___utf16le = __utf16le;
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var __hexlify = function(b/*:RawBytes|CFBlob*/,s/*:number*/,l/*:number*/)/*:string*/ { var ss/*:Array<string>*/=[]; for(var i=s; i<s+l; ++i) ss.push(("0" + b[i].toString(16)).slice(-2)); return ss.join(""); };
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var ___hexlify = __hexlify;
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var __utf8 = function(b/*:RawBytes|CFBlob*/,s/*:number*/,e/*:number*/) { var ss=[]; for(var i=s; i<e; i++) ss.push(String.fromCharCode(__readUInt8(b,i))); return ss.join(""); };
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var ___utf8 = __utf8;
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var __lpstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? __utf8(b, i+4,i+4+len-1) : "";};
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var ___lpstr = __lpstr;
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var __cpstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? __utf8(b, i+4,i+4+len-1) : "";};
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var ___cpstr = __cpstr;
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var __lpwstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = 2*__readUInt32LE(b,i); return len > 0 ? __utf8(b, i+4,i+4+len-1) : "";};
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var ___lpwstr = __lpwstr;
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var __lpp4, ___lpp4;
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__lpp4 = ___lpp4 = function lpp4_(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? __utf16le(b, i+4,i+4+len) : "";};
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var __8lpp4 = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? __utf8(b, i+4,i+4+len) : "";};
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var ___8lpp4 = __8lpp4;
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var __double, ___double;
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__double = ___double = function(b/*:RawBytes|CFBlob*/, idx/*:number*/) { return read_double_le(b, idx);};
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var is_buf = function is_buf_a(a) { return Array.isArray(a); };
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if(has_buf/*:: && typeof Buffer !== 'undefined'*/) {
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__utf16le = function(b/*:RawBytes|CFBlob*/,s/*:number*/,e/*:number*/)/*:string*/ { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___utf16le(b,s,e); return b.toString('utf16le',s,e).replace(chr0,'')/*.replace(chr1,'!')*/; };
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__hexlify = function(b/*:RawBytes|CFBlob*/,s/*:number*/,l/*:number*/)/*:string*/ { return Buffer.isBuffer(b)/*:: && b instanceof Buffer*/ ? b.toString('hex',s,s+l) : ___hexlify(b,s,l); };
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__lpstr = function lpstr_b(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___lpstr(b, i); var len = b.readUInt32LE(i); return len > 0 ? b.toString('utf8',i+4,i+4+len-1) : "";};
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__cpstr = function cpstr_b(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___cpstr(b, i); var len = b.readUInt32LE(i); return len > 0 ? b.toString('utf8',i+4,i+4+len-1) : "";};
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__lpwstr = function lpwstr_b(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___lpwstr(b, i); var len = 2*b.readUInt32LE(i); return b.toString('utf16le',i+4,i+4+len-1);};
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__lpp4 = function lpp4_b(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___lpp4(b, i); var len = b.readUInt32LE(i); return b.toString('utf16le',i+4,i+4+len);};
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__8lpp4 = function lpp4_8b(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(!Buffer.isBuffer(b)/*:: || !(b instanceof Buffer)*/) return ___8lpp4(b, i); var len = b.readUInt32LE(i); return b.toString('utf8',i+4,i+4+len);};
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__utf8 = function utf8_b(b/*:RawBytes|CFBlob*/, s/*:number*/, e/*:number*/) { return (Buffer.isBuffer(b)/*:: && (b instanceof Buffer)*/) ? b.toString('utf8',s,e) : __utf8(b,s,e); };
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__toBuffer = function(bufs) { return (bufs[0].length > 0 && Buffer.isBuffer(bufs[0][0])) ? Buffer.concat(bufs[0]) : ___toBuffer(bufs);};
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bconcat = function(bufs) { return Buffer.isBuffer(bufs[0]) ? Buffer.concat(bufs) : [].concat.apply([], bufs); };
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__double = function double_(b/*:RawBytes|CFBlob*/, i/*:number*/) { if(Buffer.isBuffer(b)/*::&& b instanceof Buffer*/) return b.readDoubleLE(i); return ___double(b,i); };
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is_buf = function is_buf_b(a) { return Buffer.isBuffer(a) || Array.isArray(a); };
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}
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/* from js-xls */
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if(typeof cptable !== 'undefined') {
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__utf16le = function(b/*:RawBytes|CFBlob*/,s/*:number*/,e/*:number*/) { return cptable.utils.decode(1200, b.slice(s,e)).replace(chr0, ''); };
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__utf8 = function(b/*:RawBytes|CFBlob*/,s/*:number*/,e/*:number*/) { return cptable.utils.decode(65001, b.slice(s,e)); };
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__lpstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? cptable.utils.decode(current_ansi, b.slice(i+4, i+4+len-1)) : "";};
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__cpstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? cptable.utils.decode(current_codepage, b.slice(i+4, i+4+len-1)) : "";};
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__lpwstr = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = 2*__readUInt32LE(b,i); return len > 0 ? cptable.utils.decode(1200, b.slice(i+4,i+4+len-1)) : "";};
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__lpp4 = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? cptable.utils.decode(1200, b.slice(i+4,i+4+len)) : "";};
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__8lpp4 = function(b/*:RawBytes|CFBlob*/,i/*:number*/) { var len = __readUInt32LE(b,i); return len > 0 ? cptable.utils.decode(65001, b.slice(i+4,i+4+len)) : "";};
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}
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var __readUInt8 = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { return b[idx]; };
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var __readUInt16LE = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { return b[idx+1]*(1<<8)+b[idx]; };
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var __readInt16LE = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { var u = b[idx+1]*(1<<8)+b[idx]; return (u < 0x8000) ? u : (0xffff - u + 1) * -1; };
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var __readUInt32LE = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { return b[idx+3]*(1<<24)+(b[idx+2]<<16)+(b[idx+1]<<8)+b[idx]; };
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var __readInt32LE = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { return (b[idx+3]<<24)|(b[idx+2]<<16)|(b[idx+1]<<8)|b[idx]; };
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var __readInt32BE = function(b/*:RawBytes|CFBlob*/, idx/*:number*/)/*:number*/ { return (b[idx]<<24)|(b[idx+1]<<16)|(b[idx+2]<<8)|b[idx+3]; };
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var ___unhexlify = function(s/*:string*/)/*:Array<number>*/ { return (s.match(/../g)||[]).map(function(x) { return parseInt(x,16);}); };
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var __unhexlify = typeof Buffer !== "undefined" ? function(s/*:string*/)/*:Array<number>|Buffer*/ { return Buffer.isBuffer(s) ? new Buffer(s, 'hex') : ___unhexlify(s); } : ___unhexlify;
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function ReadShift(size/*:number*/, t/*:?string*/)/*:number|string*/ {
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var o="", oI/*:: :number = 0*/, oR, oo=[], w, vv, i, loc;
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switch(t) {
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case 'dbcs':
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loc = this.l;
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if(has_buf && Buffer.isBuffer(this)) o = this.slice(this.l, this.l+2*size).toString("utf16le");
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else for(i = 0; i != size; ++i) { o+=String.fromCharCode(__readUInt16LE(this, loc)); loc+=2; }
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size *= 2;
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break;
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case 'utf8': o = __utf8(this, this.l, this.l + size); break;
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case 'utf16le': size *= 2; o = __utf16le(this, this.l, this.l + size); break;
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case 'wstr':
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if(typeof cptable !== 'undefined') o = cptable.utils.decode(current_codepage, this.slice(this.l, this.l+2*size));
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else return ReadShift.call(this, size, 'dbcs');
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size = 2 * size; break;
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/* [MS-OLEDS] 2.1.4 LengthPrefixedAnsiString */
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case 'lpstr-ansi': o = __lpstr(this, this.l); size = 4 + __readUInt32LE(this, this.l); break;
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case 'lpstr-cp': o = __cpstr(this, this.l); size = 4 + __readUInt32LE(this, this.l); break;
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/* [MS-OLEDS] 2.1.5 LengthPrefixedUnicodeString */
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case 'lpwstr': o = __lpwstr(this, this.l); size = 4 + 2 * __readUInt32LE(this, this.l); break;
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/* [MS-OFFCRYPTO] 2.1.2 Length-Prefixed Padded Unicode String (UNICODE-LP-P4) */
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case 'lpp4': size = 4 + __readUInt32LE(this, this.l); o = __lpp4(this, this.l); if(size & 0x02) size += 2; break;
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/* [MS-OFFCRYPTO] 2.1.3 Length-Prefixed UTF-8 String (UTF-8-LP-P4) */
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case '8lpp4': size = 4 + __readUInt32LE(this, this.l); o = __8lpp4(this, this.l); if(size & 0x03) size += 4 - (size & 0x03); break;
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case 'cstr': size = 0; o = "";
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while((w=__readUInt8(this, this.l + size++))!==0) oo.push(_getchar(w));
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o = oo.join(""); break;
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case '_wstr': size = 0; o = "";
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while((w=__readUInt16LE(this,this.l +size))!==0){oo.push(_getchar(w));size+=2;}
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size+=2; o = oo.join(""); break;
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/* sbcs and dbcs support continue records in the SST way TODO codepages */
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case 'dbcs-cont': o = ""; loc = this.l;
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for(i = 0; i != size; ++i) {
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if(this.lens && this.lens.indexOf(loc) !== -1) {
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w = __readUInt8(this, loc);
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this.l = loc + 1;
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vv = ReadShift.call(this, size-i, w ? 'dbcs-cont' : 'sbcs-cont');
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return oo.join("") + vv;
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}
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oo.push(_getchar(__readUInt16LE(this, loc)));
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loc+=2;
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} o = oo.join(""); size *= 2; break;
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case 'cpstr':
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if(typeof cptable !== 'undefined') {
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o = cptable.utils.decode(current_codepage, this.slice(this.l, this.l + size));
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break;
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}
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/* falls through */
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case 'sbcs-cont': o = ""; loc = this.l;
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for(i = 0; i != size; ++i) {
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if(this.lens && this.lens.indexOf(loc) !== -1) {
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w = __readUInt8(this, loc);
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this.l = loc + 1;
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vv = ReadShift.call(this, size-i, w ? 'dbcs-cont' : 'sbcs-cont');
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return oo.join("") + vv;
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}
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oo.push(_getchar(__readUInt8(this, loc)));
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loc+=1;
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} o = oo.join(""); break;
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default:
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switch(size) {
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case 1: oI = __readUInt8(this, this.l); this.l++; return oI;
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case 2: oI = (t === 'i' ? __readInt16LE : __readUInt16LE)(this, this.l); this.l += 2; return oI;
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case 4: case -4:
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if(t === 'i' || (this[this.l+3] & 0x80)===0) { oI = (size > 0 ? __readInt32LE : __readInt32BE)(this, this.l); this.l += 4; return oI; }
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else { oR = __readUInt32LE(this, this.l); this.l += 4; } return oR;
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case 8: case -8:
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if(t === 'f') {
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if(size == 8) oR = __double(this, this.l);
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else oR = __double([this[this.l+7],this[this.l+6],this[this.l+5],this[this.l+4],this[this.l+3],this[this.l+2],this[this.l+1],this[this.l+0]], 0);
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this.l += 8; return oR;
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} else size = 8;
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/* falls through */
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case 16: o = __hexlify(this, this.l, size); break;
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}}
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this.l+=size; return o;
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}
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var __writeUInt32LE = function(b/*:RawBytes|CFBlob*/, val/*:number*/, idx/*:number*/)/*:void*/ { b[idx] = (val & 0xFF); b[idx+1] = ((val >>> 8) & 0xFF); b[idx+2] = ((val >>> 16) & 0xFF); b[idx+3] = ((val >>> 24) & 0xFF); };
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var __writeInt32LE = function(b/*:RawBytes|CFBlob*/, val/*:number*/, idx/*:number*/)/*:void*/ { b[idx] = (val & 0xFF); b[idx+1] = ((val >> 8) & 0xFF); b[idx+2] = ((val >> 16) & 0xFF); b[idx+3] = ((val >> 24) & 0xFF); };
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var __writeUInt16LE = function(b/*:RawBytes|CFBlob*/, val/*:number*/, idx/*:number*/)/*:void*/ { b[idx] = (val & 0xFF); b[idx+1] = ((val >>> 8) & 0xFF); };
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function WriteShift(t/*:number*/, val/*:string|number*/, f/*:?string*/)/*:any*/ {
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var size = 0, i = 0;
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if(f === 'dbcs') {
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/*:: if(typeof val !== 'string') throw new Error("unreachable"); */
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for(i = 0; i != val.length; ++i) __writeUInt16LE(this, val.charCodeAt(i), this.l + 2 * i);
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size = 2 * val.length;
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} else if(f === 'sbcs') {
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/* TODO: codepage */
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/*:: if(typeof val !== 'string') throw new Error("unreachable"); */
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val = val.replace(/[^\x00-\x7F]/g, "_");
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/*:: if(typeof val !== 'string') throw new Error("unreachable"); */
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for(i = 0; i != val.length; ++i) this[this.l + i] = val.charCodeAt(i) & 0xFF;
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size = val.length;
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} else if(f === 'hex') {
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for(; i < t; ++i) {
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/*:: if(typeof val !== "string") throw new Error("unreachable"); */
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this[this.l++] = parseInt(val.slice(2*i, 2*i+2), 16)||0;
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} return this;
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} else if(f === 'utf16le') {
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/*:: if(typeof val !== "string") throw new Error("unreachable"); */
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var end/*:number*/ = this.l + t;
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for(i = 0; i < Math.min(val.length, t); ++i) {
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var cc = val.charCodeAt(i);
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this[this.l++] = cc & 0xff;
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this[this.l++] = cc >> 8;
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}
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while(this.l < end) this[this.l++] = 0;
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return this;
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} else /*:: if(typeof val === 'number') */ switch(t) {
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case 1: size = 1; this[this.l] = val&0xFF; break;
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case 2: size = 2; this[this.l] = val&0xFF; val >>>= 8; this[this.l+1] = val&0xFF; break;
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case 3: size = 3; this[this.l] = val&0xFF; val >>>= 8; this[this.l+1] = val&0xFF; val >>>= 8; this[this.l+2] = val&0xFF; break;
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case 4: size = 4; __writeUInt32LE(this, val, this.l); break;
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case 8: size = 8; if(f === 'f') { write_double_le(this, val, this.l); break; }
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/* falls through */
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case 16: break;
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case -4: size = 4; __writeInt32LE(this, val, this.l); break;
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}
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this.l += size; return this;
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}
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function CheckField(hexstr/*:string*/, fld/*:string*/)/*:void*/ {
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var m = __hexlify(this,this.l,hexstr.length>>1);
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if(m !== hexstr) throw new Error(fld + 'Expected ' + hexstr + ' saw ' + m);
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this.l += hexstr.length>>1;
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}
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function prep_blob(blob, pos/*:number*/)/*:void*/ {
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blob.l = pos;
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blob.read_shift = /*::(*/ReadShift/*:: :any)*/;
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blob.chk = CheckField;
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blob.write_shift = WriteShift;
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}
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function parsenoop(blob, length/*:: :number, opts?:any */) { blob.l += length; }
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function new_buf(sz/*:number*/)/*:Block*/ {
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var o = new_raw_buf(sz);
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prep_blob(o, 0);
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return o;
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}
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