function firstbyte(f/*:RawData*/,o/*:?TypeOpts*/)/*:Array*/ { var x = ""; switch((o||{}).type || "base64") { case 'buffer': return [f[0], f[1], f[2], f[3]]; case 'base64': x = Base64.decode(f.substr(0,24)); break; case 'binary': x = f; break; case 'array': return [f[0], f[1], f[2], f[3]]; default: throw new Error("Unrecognized type " + (o ? o.type : "undefined")); } return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)]; } function read_cfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ { if(cfb.find("EncryptedPackage")) return parse_xlsxcfb(cfb, opts); return parse_xlscfb(cfb, opts); } function read_zip(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ { /*:: if(!jszip) throw new Error("JSZip is not available"); */ var zip, d = data; var o = opts||{}; if(!o.type) o.type = (has_buf && Buffer.isBuffer(data)) ? "buffer" : "base64"; switch(o.type) { case "base64": zip = new jszip(d, { base64:true }); break; case "binary": case "array": zip = new jszip(d, { base64:false }); break; case "buffer": zip = new jszip(d); break; default: throw new Error("Unrecognized type " + o.type); } return parse_zip(zip, o); } function read_utf16(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ { var d = data; if(o.type == 'base64') d = Base64.decode(d); d = cptable.utils.decode(1200, d.slice(2)); o.type = "binary"; if(d.charCodeAt(0) == 0x3C) return parse_xlml(d,o); return PRN.to_workbook(d, o); } function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ { var zip, d = data, n=[0]; var o = opts||{}; if(!o.type) o.type = (has_buf && Buffer.isBuffer(data)) ? "buffer" : "base64"; if(o.type == "file") { o.type = "buffer"; d = _fs.readFileSync(data); } switch((n = firstbyte(d, o))[0]) { case 0xD0: return read_cfb(CFB.read(d, o), o); case 0x09: return parse_xlscfb(s2a(o.type === 'base64' ? Base64.decode(d) : d), o); case 0x3C: return parse_xlml(d, o); case 0x49: if(n[1] == 0x44) return SYLK.to_workbook(d, o); break; case 0x54: if(n[1] == 0x41 && n[2] == 0x42 && n[3] == 0x4C) return DIF.to_workbook(d, o); break; case 0x50: if(n[1] == 0x4B && n[2] < 0x20 && n[3] < 0x20) return read_zip(d, o); break; case 0xEF: return parse_xlml(d, o); case 0xFF: if(n[1] == 0xFE){ return read_utf16(d, o); } break; case 0x00: if(n[1] == 0x00 && n[2] >= 0x02 && n[3] == 0x00) return WK_.to_workbook(d, o); break; case 0x03: case 0x83: case 0x8B: return DBF.to_workbook(d, o); } if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o); if(0x20>n[0]||n[0]>0x7F) throw new Error("Unsupported file " + n.join("|")); return PRN.to_workbook(d, o); } function readFileSync(filename/*:string*/, opts/*:?ParseOpts*/)/*:Workbook*/ { var o = opts||{}; o.type = 'file'; return readSync(filename, o); }