ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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var WriteBuffer = require('../'); describe('WriteBuffer', function() { var w; beforeEach(function() { w = new WriteBuffer(); }); function join(arr) { return arr.map(function(buf) { return buf.toString('hex'); }).join(''); } describe('.writeUInt8', function() { it('should write bytes', function() { w.writeUInt8(1); w.writeUInt8(2); w.writeUInt8(3); w.writeUInt8(4); assert.equal(join(w.render()), '01020304'); }); it('should correctly handle overflow', function() { w.reserve(3); w.writeUInt8(1); w.writeUInt8(2); w.writeUInt8(3); w.writeUInt8(4); assert.equal(join(w.render()), '01020304'); }); }); describe('.writeInt8', function() { it('should write bytes', function() { w.writeInt8(-1); w.writeInt8(2); assert.equal(join(w.render()), 'ff02'); }); }); describe('.writeUInt16BE', function() { it('should write bytes', function() { w.writeUInt16BE(0x0102); w.writeUInt16BE(0x0304); assert.equal(join(w.render()), '01020304'); }); it('should correctly handle overflow', function() { w.reserve(2); w.reserve(3); w.writeUInt16BE(0x0102); w.writeUInt16BE(0x0304); w.writeUInt16BE(0x0506); assert.equal(join(w.render()), '010203040506'); }); }); describe('.writeInt16BE', function() { it('should write bytes', function() { w.writeInt16BE(-0x0102); w.writeInt16BE(0x0304); assert.equal(join(w.render()), 'fefe0304'); }); }); describe('.writeUInt16LE', function() { it('should write bytes', function() { w.writeUInt16LE(0x0102); w.writeUInt16LE(0x0304); assert.equal(join(w.render()), '02010403'); }); it('should correctly handle overflow', function() { w.reserve(2); w.reserve(3); w.writeUInt16LE(0x0102); w.writeUInt16LE(0x0304); w.writeUInt16LE(0x0506); assert.equal(join(w.render()), '020104030605'); }); }); describe('.writeInt16LE', function() { it('should write bytes', function() { w.writeInt16LE(-0x0201); w.writeInt16LE(0x0304); assert.equal(join(w.render()), 'fffd0403'); }); }); describe('.writeUInt24BE', function() { it('should write bytes', function() { w.writeUInt24BE(0x010203); w.writeUInt24BE(0x040506); assert.equal(join(w.render()), '010203040506'); }); it('should correctly set avail on boundary', function() { w = new WriteBuffer(); w.reserveRate = 4; w.writeUInt16BE(1); w.writeUInt24BE(1); assert.equal(w.avail, 3); }); }); describe('.writeInt24BE', function() { it('should write bytes', function() { w.writeInt24BE(-0x010203); w.writeInt24BE(0x040506); assert.equal(join(w.render()), 'fefdfd040506'); }); }); describe('.writeUInt24LE', function() { it('should write bytes', function() { w.writeUInt24LE(0x010203); w.writeUInt24LE(0x040506); assert.equal(join(w.render()), '030201060504'); }); }); describe('.writeInt24LE', function() { it('should write bytes', function() { w.writeInt24LE(-0x010203); w.writeInt24LE(0x040506); assert.equal(join(w.render()), 'fdfdfe060504'); }); }); describe('.writeUInt32BE', function() { it('should write bytes', function() { w.writeUInt32BE(0x01020304); w.writeUInt32BE(0x05060708); assert.equal(join(w.render()), '0102030405060708'); }); it('should write bytes on the boundary', function() { w.reserve(4); w.writeUInt8(0x00); w.writeUInt32BE(0x01020304); assert.equal(join(w.render()), '0001020304'); }); }); describe('.writeInt32BE', function() { it('should write bytes', function() { w.writeInt32BE(-0x01020304); w.writeInt32BE(0x05060708); assert.equal(join(w.render()), 'fefdfcfc05060708'); }); }); describe('.writeUInt32LE', function() { it('should write bytes', function() { w.writeUInt32LE(0x01020304); w.writeUInt32LE(0x05060708); assert.equal(join(w.render()), '0403020108070605'); }); it('should write max uint32 value', function() { w.writeUInt32LE(0xffffffff); assert.equal(join(w.render()), 'ffffffff'); }); }); describe('.combWrite', function() { it('should write bytes', function() { w.writeComb(1, 'le', 0x01); w.writeComb(1, 'be', 0x02); w.writeComb(2, 'le', 0x0102); w.writeComb(2, 'be', 0x0304); w.writeComb(3, 'le', 0x010203); w.writeComb(3, 'be', 0x040506); w.writeComb(4, 'le', 0x01020304); w.writeComb(4, 'be', 0x05060708); assert.equal(join(w.render()), '0102020103040302010405060403020105060708'); }); it('should write max uint32 value', function() { w.writeUInt32LE(0xffffffff); assert.equal(join(w.render()), 'ffffffff'); }); }); describe('.writeInt32LE', function() { it('should write bytes', function() { w.writeInt32LE(-0x01020304); w.writeInt32LE(0x05060708); assert.equal(join(w.render()), 'fcfcfdfe08070605'); }); }); describe('.skip', function() { it('should skip bytes', function() { w.skip(4); w.writeUInt32BE(0xdeadbeef); assert(/^.{8}deadbeef$/.test(join(w.render()))); }); it('should skip 0 bytes', function() { var skip = w.skip(0); assert.equal(skip.size, 0); w.writeUInt32BE(0xdeadbeef); assert(/^deadbeef$/.test(join(w.render()))); }); it('should skip bytes on the boundary', function() { w.reserve(4); w.writeUInt8(0x01); var skip = w.skip(4); w.writeUInt32BE(0xdeadbeef); skip.writeUInt32BE(0xabbabaab); assert(/^01abbabaabdeadbeef$/.test(join(w.render()))); }); it('should skip bytes on the boundary in two chunks', function() { w.reserve(4); var skip1 = w.skip(2); var skip2 = w.skip(2); w.writeUInt32BE(0xdeadbeef); skip1.writeUInt16BE(0xabba); skip2.writeUInt16BE(0xbaba); assert(/^abbababadeadbeef$/.test(join(w.render()))); }); }); describe('.slice', function() { it('should return empty slice', function() { w.writeUInt32BE(0xabbadead); assert.equal(join(w.slice(4, 4).render()), ''); assert.equal(join(w.render()), 'abbadead'); }); it('should return full slice', function() { w.writeUInt32BE(0xabbadead); var slice = w.slice(0, 4); slice.writeUInt32BE(0xdeadbeef); assert.equal(join(slice.render()), 'deadbeef'); assert.equal(join(w.render()), 'deadbeef'); }); it('should return partial slice', function() { w.writeUInt32BE(0xabbadead); var slice = w.slice(0, 3); slice.writeUInt24BE(0xdeadbe); assert.equal(join(slice.render()), 'deadbe'); assert.equal(join(w.render()), 'deadbead'); }); it('should return over-the-boundary slice', function() { for (var i = 0; i < 16; i++) { w.reserve(3); w.writeUInt24BE(i); } assert.equal(join(w.render()), '000000000001000002000003000004000005000006000007' + '00000800000900000a00000b00000c00000d00000e00000f'); var slice = w.slice(5, 12); slice.writeUInt24BE(0xaaabac); slice.writeUInt24BE(0xbabbbc); slice.writeUInt8(0xcc); assert.equal(join(slice.render()), 'aaabacbabbbccc'); assert.equal(join(w.render()), '0000000000aaabacbabbbccc000004000005000006000007' + '00000800000900000a00000b00000c00000d00000e00000f'); }); }); describe('.copyFrom', function() { it('should copy bytes', function() { var tmp = new Buffer(128); for (var i = 0; i < tmp.length; i++) tmp[i] = i; w.writeUInt32BE(0xdeadbeef); w.copyFrom(tmp); w.writeUInt32BE(0xabbadead); assert.equal( join(w.render()), 'deadbeef000102030405060708090a0b0c0d0e0f101112131415161718191a1b' + '1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b' + '3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758595a5b' + '5c5d5e5f606162636465666768696a6b6c6d6e6f707172737475767778797a7b' + '7c7d7e7fabbadead'); }); it('should copy bytes using offset', function() { var tmp = new Buffer(128); for (var i = 0; i < tmp.length; i++) tmp[i] = i; w.writeUInt32BE(0xdeadbeef); w.copyFrom(tmp, 10, 12); w.writeUInt32BE(0xabbadead); assert.equal( join(w.render()), 'deadbeef0a0babbadead'); }); }); describe('.write', function() { it('should write utf8 string', function() { w.writeUInt32BE(0xdeadbeef); w.write('ohai\u1023'); w.writeUInt32BE(0xabbadead); assert.equal( join(w.render()), 'deadbeef' + '6f6861691023' + 'abbadead'); }); it('should copy bytes using offset', function() { var tmp = new Buffer(128); for (var i = 0; i < tmp.length; i++) tmp[i] = i; w.writeUInt32BE(0xdeadbeef); w.copyFrom(tmp, 10, 12); w.writeUInt32BE(0xabbadead); assert.equal( join(w.render()), 'deadbeef0a0babbadead'); }); }); describe('.skip', function() { it('should copy bytes', function() { w.reserve(5); var h = w.skip(4); w.writeUInt32BE(0xabbadead); h.writeUInt32BE(0xdeadbeef); assert.equal( join(w.render()), 'deadbeefabbadead'); }); }); describe('.forceReserve = true', function() { it('should allocate more bytes', function() { w.forceReserve = true; w.reserve(4); w.writeUInt32BE(0xabbadead); w.writeUInt32BE(0xabbadead); assert.equal(w.render().length, 1); }); }); });