[ViewVC] Diff of: cvs/JSON-XS/XS.pm

Comparing JSON-XS/XS.pm (file contents):
Revision 1.80 by root, Sat Dec 29 17:22:39 2007 UTC vs.
Revision 1.91 by root, Thu Mar 20 02:11:21 2008 UTC

…		…
		1	=encoding utf-8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	JSON::XS - JSON serialising/deserialising, done correctly and fast	5	JSON::XS - JSON serialising/deserialising, done correctly and fast
4		6
5	JSON::XS - 正しくて高速な JSON シリアライザ/デシリアライザ	7	JSON::XS - 正しくて高速な JSON シリアライザ/デシリアライザ
58		60
59	=over 4	61	=over 4
60		62
61	=item * correct Unicode handling	63	=item * correct Unicode handling
62		64
63	This module knows how to handle Unicode, and even documents how and when	65	This module knows how to handle Unicode, documents how and when it does
64	it does so.	66	so, and even documents what "correct" means.
65		67
66	=item * round-trip integrity	68	=item * round-trip integrity
67		69
68	When you serialise a perl data structure using only datatypes supported	70	When you serialise a perl data structure using only datatypes supported
69	by JSON, the deserialised data structure is identical on the Perl level.	71	by JSON, the deserialised data structure is identical on the Perl level.
70	(e.g. the string "2.0" doesn't suddenly become "2" just because it looks	72	(e.g. the string "2.0" doesn't suddenly become "2" just because it looks
71	like a number).	73	like a number). There minor I<are> exceptions to this, read the MAPPING
		74	section below to learn about those.
72		75
73	=item * strict checking of JSON correctness	76	=item * strict checking of JSON correctness
74		77
75	There is no guessing, no generating of illegal JSON texts by default,	78	There is no guessing, no generating of illegal JSON texts by default,
76	and only JSON is accepted as input by default (the latter is a security	79	and only JSON is accepted as input by default (the latter is a security
77	feature).	80	feature).
78		81
79	=item * fast	82	=item * fast
80		83
81	Compared to other JSON modules, this module compares favourably in terms	84	Compared to other JSON modules and other serialisers such as Storable,
82	of speed, too.	85	this module usually compares favourably in terms of speed, too.
83		86
84	=item * simple to use	87	=item * simple to use
85		88
86	This module has both a simple functional interface as well as an OO	89	This module has both a simple functional interface as well as an objetc
87	interface.	90	oriented interface interface.
88		91
89	=item * reasonably versatile output formats	92	=item * reasonably versatile output formats
90		93
91	You can choose between the most compact guaranteed single-line format	94	You can choose between the most compact guaranteed-single-line format
92	possible (nice for simple line-based protocols), a pure-ascii format	95	possible (nice for simple line-based protocols), a pure-ascii format
93	(for when your transport is not 8-bit clean, still supports the whole	96	(for when your transport is not 8-bit clean, still supports the whole
94	Unicode range), or a pretty-printed format (for when you want to read that	97	Unicode range), or a pretty-printed format (for when you want to read that
95	stuff). Or you can combine those features in whatever way you like.	98	stuff). Or you can combine those features in whatever way you like.
96		99
…		…
100		103
101	package JSON::XS;	104	package JSON::XS;
102		105
103	use strict;	106	use strict;
104		107
105	our $VERSION = '2.01';	108	our $VERSION = '2.1';
106	our @ISA = qw(Exporter);	109	our @ISA = qw(Exporter);
107		110
108	our @EXPORT = qw(encode_json decode_json to_json from_json);	111	our @EXPORT = qw(encode_json decode_json to_json from_json);
109		112
110	sub to_json($) {	113	sub to_json($) {
…		…
174	This enables you to store Unicode characters as single characters in a	177	This enables you to store Unicode characters as single characters in a
175	Perl string - very natural.	178	Perl string - very natural.
176		179
177	=item 2. Perl does I<not> associate an encoding with your strings.	180	=item 2. Perl does I<not> associate an encoding with your strings.
178		181
179	Unless you force it to, e.g. when matching it against a regex, or printing	182	... until you force it to, e.g. when matching it against a regex, or
180	the scalar to a file, in which case Perl either interprets your string as	183	printing the scalar to a file, in which case Perl either interprets your
181	locale-encoded text, octets/binary, or as Unicode, depending on various	184	string as locale-encoded text, octets/binary, or as Unicode, depending
182	settings. In no case is an encoding stored together with your data, it is	185	on various settings. In no case is an encoding stored together with your
183	I<use> that decides encoding, not any magical metadata.	186	data, it is I<use> that decides encoding, not any magical meta data.
184		187
185	=item 3. The internal utf-8 flag has no meaning with regards to the	188	=item 3. The internal utf-8 flag has no meaning with regards to the
186	encoding of your string.	189	encoding of your string.
187		190
188	Just ignore that flag unless you debug a Perl bug, a module written in	191	Just ignore that flag unless you debug a Perl bug, a module written in
…		…
242		245
243	If C<$enable> is false, then the C<encode> method will not escape Unicode	246	If C<$enable> is false, then the C<encode> method will not escape Unicode
244	characters unless required by the JSON syntax or other flags. This results	247	characters unless required by the JSON syntax or other flags. This results
245	in a faster and more compact format.	248	in a faster and more compact format.
246		249
		250	See also the section I<ENCODING/CODESET FLAG NOTES> later in this
		251	document.
		252
247	The main use for this flag is to produce JSON texts that can be	253	The main use for this flag is to produce JSON texts that can be
248	transmitted over a 7-bit channel, as the encoded JSON texts will not	254	transmitted over a 7-bit channel, as the encoded JSON texts will not
249	contain any 8 bit characters.	255	contain any 8 bit characters.
250		256
251	JSON::XS->new->ascii (1)->encode ([chr 0x10401])	257	JSON::XS->new->ascii (1)->encode ([chr 0x10401])
…		…
262	will not be affected in any way by this flag, as C<decode> by default	268	will not be affected in any way by this flag, as C<decode> by default
263	expects Unicode, which is a strict superset of latin1.	269	expects Unicode, which is a strict superset of latin1.
264		270
265	If C<$enable> is false, then the C<encode> method will not escape Unicode	271	If C<$enable> is false, then the C<encode> method will not escape Unicode
266	characters unless required by the JSON syntax or other flags.	272	characters unless required by the JSON syntax or other flags.
		273
		274	See also the section I<ENCODING/CODESET FLAG NOTES> later in this
		275	document.
267		276
268	The main use for this flag is efficiently encoding binary data as JSON	277	The main use for this flag is efficiently encoding binary data as JSON
269	text, as most octets will not be escaped, resulting in a smaller encoded	278	text, as most octets will not be escaped, resulting in a smaller encoded
270	size. The disadvantage is that the resulting JSON text is encoded	279	size. The disadvantage is that the resulting JSON text is encoded
271	in latin1 (and must correctly be treated as such when storing and	280	in latin1 (and must correctly be treated as such when storing and
…		…
290		299
291	If C<$enable> is false, then the C<encode> method will return the JSON	300	If C<$enable> is false, then the C<encode> method will return the JSON
292	string as a (non-encoded) Unicode string, while C<decode> expects thus a	301	string as a (non-encoded) Unicode string, while C<decode> expects thus a
293	Unicode string. Any decoding or encoding (e.g. to UTF-8 or UTF-16) needs	302	Unicode string. Any decoding or encoding (e.g. to UTF-8 or UTF-16) needs
294	to be done yourself, e.g. using the Encode module.	303	to be done yourself, e.g. using the Encode module.
		304
		305	See also the section I<ENCODING/CODESET FLAG NOTES> later in this
		306	document.
295		307
296	Example, output UTF-16BE-encoded JSON:	308	Example, output UTF-16BE-encoded JSON:
297		309
298	use Encode;	310	use Encode;
299	$jsontext = encode "UTF-16BE", JSON::XS->new->encode ($object);	311	$jsontext = encode "UTF-16BE", JSON::XS->new->encode ($object);
…		…
706		718
707	A JSON number becomes either an integer, numeric (floating point) or	719	A JSON number becomes either an integer, numeric (floating point) or
708	string scalar in perl, depending on its range and any fractional parts. On	720	string scalar in perl, depending on its range and any fractional parts. On
709	the Perl level, there is no difference between those as Perl handles all	721	the Perl level, there is no difference between those as Perl handles all
710	the conversion details, but an integer may take slightly less memory and	722	the conversion details, but an integer may take slightly less memory and
711	might represent more values exactly than (floating point) numbers.	723	might represent more values exactly than floating point numbers.
712		724
713	If the number consists of digits only, JSON::XS will try to represent	725	If the number consists of digits only, JSON::XS will try to represent
714	it as an integer value. If that fails, it will try to represent it as	726	it as an integer value. If that fails, it will try to represent it as
715	a numeric (floating point) value if that is possible without loss of	727	a numeric (floating point) value if that is possible without loss of
716	precision. Otherwise it will preserve the number as a string value.	728	precision. Otherwise it will preserve the number as a string value (in
		729	which case you lose roundtripping ability, as the JSON number will be
		730	re-encoded toa JSON string).
717		731
718	Numbers containing a fractional or exponential part will always be	732	Numbers containing a fractional or exponential part will always be
719	represented as numeric (floating point) values, possibly at a loss of	733	represented as numeric (floating point) values, possibly at a loss of
720	precision.	734	precision (in which case you might lose perfect roundtripping ability, but
721		735	the JSON number will still be re-encoded as a JSON number).
722	This might create round-tripping problems as numbers might become strings,
723	but as Perl is typeless there is no other way to do it.
724		736
725	=item true, false	737	=item true, false
726		738
727	These JSON atoms become C<JSON::XS::true> and C<JSON::XS::false>,	739	These JSON atoms become C<JSON::XS::true> and C<JSON::XS::false>,
728	respectively. They are overloaded to act almost exactly like the numbers	740	respectively. They are overloaded to act almost exactly like the numbers
…		…
774	These special values become JSON true and JSON false values,	786	These special values become JSON true and JSON false values,
775	respectively. You can also use C<\1> and C<\0> directly if you want.	787	respectively. You can also use C<\1> and C<\0> directly if you want.
776		788
777	=item blessed objects	789	=item blessed objects
778		790
779	Blessed objects are not allowed. JSON::XS currently tries to encode their	791	Blessed objects are not directly representable in JSON. See the
780	underlying representation (hash- or arrayref), but this behaviour might	792	C<allow_blessed> and C<convert_blessed> methods on various options on
781	change in future versions.	793	how to deal with this: basically, you can choose between throwing an
		794	exception, encoding the reference as if it weren't blessed, or provide
		795	your own serialiser method.
782		796
783	=item simple scalars	797	=item simple scalars
784		798
785	Simple Perl scalars (any scalar that is not a reference) are the most	799	Simple Perl scalars (any scalar that is not a reference) are the most
786	difficult objects to encode: JSON::XS will encode undefined scalars as	800	difficult objects to encode: JSON::XS will encode undefined scalars as
787	JSON null value, scalars that have last been used in a string context	801	JSON C<null> values, scalars that have last been used in a string context
788	before encoding as JSON strings and anything else as number value:	802	before encoding as JSON strings, and anything else as number value:
789		803
790	# dump as number	804	# dump as number
791	encode_json [2] # yields [2]	805	encode_json [2] # yields [2]
792	encode_json [-3.0e17] # yields [-3e+17]	806	encode_json [-3.0e17] # yields [-3e+17]
793	my $value = 5; encode_json [$value] # yields [5]	807	my $value = 5; encode_json [$value] # yields [5]
…		…
811	my $x = "3"; # some variable containing a string	825	my $x = "3"; # some variable containing a string
812	$x += 0; # numify it, ensuring it will be dumped as a number	826	$x += 0; # numify it, ensuring it will be dumped as a number
813	$x *= 1; # same thing, the choice is yours.	827	$x *= 1; # same thing, the choice is yours.
814		828
815	You can not currently force the type in other, less obscure, ways. Tell me	829	You can not currently force the type in other, less obscure, ways. Tell me
816	if you need this capability.	830	if you need this capability (but don't forget to explain why it's needed
		831	:).
		832
		833	=back
		834
		835
		836	=head1 ENCODING/CODESET FLAG NOTES
		837
		838	The interested reader might have seen a number of flags that signify
		839	encodings or codesets - C<utf8>, C<latin1> and C<ascii>. There seems to be
		840	some confusion on what these do, so here is a short comparison:
		841
		842	C<utf8> controls whether the JSON text created by C<encode> (and expected
		843	by C<decode>) is UTF-8 encoded or not, while C<latin1> and C<ascii> only
		844	control whether C<encode> escapes character values outside their respective
		845	codeset range. Neither of these flags conflict with each other, although
		846	some combinations make less sense than others.
		847
		848	Care has been taken to make all flags symmetrical with respect to
		849	C<encode> and C<decode>, that is, texts encoded with any combination of
		850	these flag values will be correctly decoded when the same flags are used
		851	- in general, if you use different flag settings while encoding vs. when
		852	decoding you likely have a bug somewhere.
		853
		854	Below comes a verbose discussion of these flags. Note that a "codeset" is
		855	simply an abstract set of character-codepoint pairs, while an encoding
		856	takes those codepoint numbers and I<encodes> them, in our case into
		857	octets. Unicode is (among other things) a codeset, UTF-8 is an encoding,
		858	and ISO-8859-1 (= latin 1) and ASCII are both codesets I<and> encodings at
		859	the same time, which can be confusing.
		860
		861	=over 4
		862
		863	=item C<utf8> flag disabled
		864
		865	When C<utf8> is disabled (the default), then C<encode>/C<decode> generate
		866	and expect Unicode strings, that is, characters with high ordinal Unicode
		867	values (> 255) will be encoded as such characters, and likewise such
		868	characters are decoded as-is, no canges to them will be done, except
		869	"(re-)interpreting" them as Unicode codepoints or Unicode characters,
		870	respectively (to Perl, these are the same thing in strings unless you do
		871	funny/weird/dumb stuff).
		872
		873	This is useful when you want to do the encoding yourself (e.g. when you
		874	want to have UTF-16 encoded JSON texts) or when some other layer does
		875	the encoding for you (for example, when printing to a terminal using a
		876	filehandle that transparently encodes to UTF-8 you certainly do NOT want
		877	to UTF-8 encode your data first and have Perl encode it another time).
		878
		879	=item C<utf8> flag enabled
		880
		881	If the C<utf8>-flag is enabled, C<encode>/C<decode> will encode all
		882	characters using the corresponding UTF-8 multi-byte sequence, and will
		883	expect your input strings to be encoded as UTF-8, that is, no "character"
		884	of the input string must have any value > 255, as UTF-8 does not allow
		885	that.
		886
		887	The C<utf8> flag therefore switches between two modes: disabled means you
		888	will get a Unicode string in Perl, enabled means you get an UTF-8 encoded
		889	octet/binary string in Perl.
		890
		891	=item C<latin1> or C<ascii> flags enabled
		892
		893	With C<latin1> (or C<ascii>) enabled, C<encode> will escape characters
		894	with ordinal values > 255 (> 127 with C<ascii>) and encode the remaining
		895	characters as specified by the C<utf8> flag.
		896
		897	If C<utf8> is disabled, then the result is also correctly encoded in those
		898	character sets (as both are proper subsets of Unicode, meaning that a
		899	Unicode string with all character values < 256 is the same thing as a
		900	ISO-8859-1 string, and a Unicode string with all character values < 128 is
		901	the same thing as an ASCII string in Perl).
		902
		903	If C<utf8> is enabled, you still get a correct UTF-8-encoded string,
		904	regardless of these flags, just some more characters will be escaped using
		905	C<\uXXXX> then before.
		906
		907	Note that ISO-8859-1-I<encoded> strings are not compatible with UTF-8
		908	encoding, while ASCII-encoded strings are. That is because the ISO-8859-1
		909	encoding is NOT a subset of UTF-8 (despite the ISO-8859-1 I<codeset> being
		910	a subset of Unicode), while ASCII is.
		911
		912	Surprisingly, C<decode> will ignore these flags and so treat all input
		913	values as governed by the C<utf8> flag. If it is disabled, this allows you
		914	to decode ISO-8859-1- and ASCII-encoded strings, as both strict subsets of
		915	Unicode. If it is enabled, you can correctly decode UTF-8 encoded strings.
		916
		917	So neither C<latin1> nor C<ascii> are incompatible with the C<utf8> flag -
		918	they only govern when the JSON output engine escapes a character or not.
		919
		920	The main use for C<latin1> is to relatively efficiently store binary data
		921	as JSON, at the expense of breaking compatibility with most JSON decoders.
		922
		923	The main use for C<ascii> is to force the output to not contain characters
		924	with values > 127, which means you can interpret the resulting string
		925	as UTF-8, ISO-8859-1, ASCII, KOI8-R or most about any character set and
		926	8-bit-encoding, and still get the same data structure back. This is useful
		927	when your channel for JSON transfer is not 8-bit clean or the encoding
		928	might be mangled in between (e.g. in mail), and works because ASCII is a
		929	proper subset of most 8-bit and multibyte encodings in use in the world.
817		930
818	=back	931	=back
819		932
820		933
821	=head1 COMPARISON	934	=head1 COMPARISON
…		…
825	problems (or pleasures) I encountered with various existing JSON modules,	938	problems (or pleasures) I encountered with various existing JSON modules,
826	followed by some benchmark values. JSON::XS was designed not to suffer	939	followed by some benchmark values. JSON::XS was designed not to suffer
827	from any of these problems or limitations.	940	from any of these problems or limitations.
828		941
829	=over 4	942	=over 4
		943
		944	=item JSON 2.xx
		945
		946	A marvellous piece of engineering, this module either uses JSON::XS
		947	directly when available (so will be 100% compatible with it, including
		948	speed), or it uses JSON::PP, which is basically JSON::XS translated to
		949	Pure Perl, which should be 100% compatible with JSON::XS, just a bit
		950	slower.
		951
		952	You cannot really lose by using this module, especially as it tries very
		953	hard to work even with ancient Perl versions, while JSON::XS does not.
830		954
831	=item JSON 1.07	955	=item JSON 1.07
832		956
833	Slow (but very portable, as it is written in pure Perl).	957	Slow (but very portable, as it is written in pure Perl).
834		958
…		…
906		1030
907		1031
908	=head2 JSON and YAML	1032	=head2 JSON and YAML
909		1033
910	You often hear that JSON is a subset of YAML. This is, however, a mass	1034	You often hear that JSON is a subset of YAML. This is, however, a mass
911	hysteria and very far from the truth. In general, there is no way to	1035	hysteria(*) and very far from the truth (as of the time of this writing),
		1036	so let me state it clearly: I<in general, there is no way to configure
912	configure JSON::XS to output a data structure as valid YAML that works for	1037	JSON::XS to output a data structure as valid YAML> that works in all
913	all cases.	1038	cases.
914		1039
915	If you really must use JSON::XS to generate YAML, you should use this	1040	If you really must use JSON::XS to generate YAML, you should use this
916	algorithm (subject to change in future versions):	1041	algorithm (subject to change in future versions):
917		1042
918	my $to_yaml = JSON::XS->new->utf8->space_after (1);	1043	my $to_yaml = JSON::XS->new->utf8->space_after (1);
919	my $yaml = $to_yaml->encode ($ref) . "\n";	1044	my $yaml = $to_yaml->encode ($ref) . "\n";
920		1045
921	This will usually generate JSON texts that also parse as valid	1046	This will I<usually> generate JSON texts that also parse as valid
922	YAML. Please note that YAML has hardcoded limits on (simple) object key	1047	YAML. Please note that YAML has hardcoded limits on (simple) object key
923	lengths that JSON doesn't have and also has different and incompatible	1048	lengths that JSON doesn't have and also has different and incompatible
924	unicode handling, so you should make sure that your hash keys are	1049	unicode handling, so you should make sure that your hash keys are
925	noticeably shorter than the 1024 "stream characters" YAML allows and that	1050	noticeably shorter than the 1024 "stream characters" YAML allows and that
926	you do not have codepoints with values outside the Unicode BMP (basic	1051	you do not have characters with codepoint values outside the Unicode BMP
927	multilingual page).	1052	(basic multilingual page). YAML also does not allow C<\/> sequences in
		1053	strings (which JSON::XS does not I<currently> generate, but other JSON
		1054	generators might).
928		1055
929	There might be other incompatibilities that I am not aware of. In general	1056	There might be other incompatibilities that I am not aware of (or the YAML
		1057	specification has been changed yet again - it does so quite often). In
930	you should not try to generate YAML with a JSON generator or vice versa,	1058	general you should not try to generate YAML with a JSON generator or vice
931	or try to parse JSON with a YAML parser or vice versa: chances are high	1059	versa, or try to parse JSON with a YAML parser or vice versa: chances are
932	that you will run into severe interoperability problems when you least	1060	high that you will run into severe interoperability problems when you
933	expect it.	1061	least expect it.
		1062
		1063	=over 4
		1064
		1065	=item (*)
		1066
		1067	I have been pressured multiple times by Brian Ingerson (one of the
		1068	authors of the YAML specification) to remove this paragraph, despite him
		1069	acknowledging that the actual incompatibilities exist. As I was personally
		1070	bitten by this "JSON is YAML" lie, I refused and said I will continue to
		1071	educate people about these issues, so others do not run into the same
		1072	problem again and again. After this, Brian called me a (quote)I<complete
		1073	and worthless idiot>(unquote).
		1074
		1075	In my opinion, instead of pressuring and insulting people who actually
		1076	clarify issues with YAML and the wrong statements of some of its
		1077	proponents, I would kindly suggest reading the JSON spec (which is not
		1078	that difficult or long) and finally make YAML compatible to it, and
		1079	educating users about the changes, instead of spreading lies about the
		1080	real compatibility for many I<years> and trying to silence people who
		1081	point out that it isn't true.
		1082
		1083	=back
934		1084
935		1085
936	=head2 SPEED	1086	=head2 SPEED
937		1087
938	It seems that JSON::XS is surprisingly fast, as shown in the following	1088	It seems that JSON::XS is surprisingly fast, as shown in the following
939	tables. They have been generated with the help of the C<eg/bench> program	1089	tables. They have been generated with the help of the C<eg/bench> program
940	in the JSON::XS distribution, to make it easy to compare on your own	1090	in the JSON::XS distribution, to make it easy to compare on your own
941	system.	1091	system.
942		1092
943	First comes a comparison between various modules using a very short	1093	First comes a comparison between various modules using
944	single-line JSON string:	1094	a very short single-line JSON string (also available at
		1095	L<http://dist.schmorp.de/misc/json/short.json>).
945		1096
946	{"method": "handleMessage", "params": ["user1", "we were just talking"], \	1097	{"method": "handleMessage", "params": ["user1", "we were just talking"], \
947	"id": null, "array":[1,11,234,-5,1e5,1e7, true, false]}	1098	"id": null, "array":[1,11,234,-5,1e5,1e7, true, false]}
948		1099
949	It shows the number of encodes/decodes per second (JSON::XS uses	1100	It shows the number of encodes/decodes per second (JSON::XS uses
…		…
968	about three times faster on decoding, and over forty times faster	1119	about three times faster on decoding, and over forty times faster
969	than JSON, even with pretty-printing and key sorting. It also compares	1120	than JSON, even with pretty-printing and key sorting. It also compares
970	favourably to Storable for small amounts of data.	1121	favourably to Storable for small amounts of data.
971		1122
972	Using a longer test string (roughly 18KB, generated from Yahoo! Locals	1123	Using a longer test string (roughly 18KB, generated from Yahoo! Locals
973	search API (http://nanoref.com/yahooapis/mgPdGg):	1124	search API (L<http://dist.schmorp.de/misc/json/long.json>).
974		1125
975	module \| encode \| decode \|	1126	module \| encode \| decode \|
976	-----------\|------------\|------------\|	1127	-----------\|------------\|------------\|
977	JSON 1.x \| 55.260 \| 34.971 \|	1128	JSON 1.x \| 55.260 \| 34.971 \|
978	JSON::DWIW \| 825.228 \| 1082.513 \|	1129	JSON::DWIW \| 825.228 \| 1082.513 \|
…		…
1020	to free the temporary). If that is exceeded, the program crashes. To be	1171	to free the temporary). If that is exceeded, the program crashes. To be
1021	conservative, the default nesting limit is set to 512. If your process	1172	conservative, the default nesting limit is set to 512. If your process
1022	has a smaller stack, you should adjust this setting accordingly with the	1173	has a smaller stack, you should adjust this setting accordingly with the
1023	C<max_depth> method.	1174	C<max_depth> method.
1024		1175
1025	And last but least, something else could bomb you that I forgot to think	1176	Something else could bomb you, too, that I forgot to think of. In that
1026	of. In that case, you get to keep the pieces. I am always open for hints,	1177	case, you get to keep the pieces. I am always open for hints, though...
1027	though...	1178
		1179	Also keep in mind that JSON::XS might leak contents of your Perl data
		1180	structures in its error messages, so when you serialise sensitive
		1181	information you might want to make sure that exceptions thrown by JSON::XS
		1182	will not end up in front of untrusted eyes.
1028		1183
1029	If you are using JSON::XS to return packets to consumption	1184	If you are using JSON::XS to return packets to consumption
1030	by JavaScript scripts in a browser you should have a look at	1185	by JavaScript scripts in a browser you should have a look at
1031	L<http://jpsykes.com/47/practical-csrf-and-json-security> to see whether	1186	L<http://jpsykes.com/47/practical-csrf-and-json-security> to see whether
1032	you are vulnerable to some common attack vectors (which really are browser	1187	you are vulnerable to some common attack vectors (which really are browser
…		…
1038	=head1 THREADS	1193	=head1 THREADS
1039		1194
1040	This module is I<not> guaranteed to be thread safe and there are no	1195	This module is I<not> guaranteed to be thread safe and there are no
1041	plans to change this until Perl gets thread support (as opposed to the	1196	plans to change this until Perl gets thread support (as opposed to the
1042	horribly slow so-called "threads" which are simply slow and bloated	1197	horribly slow so-called "threads" which are simply slow and bloated
1043	process simulations - use fork, its I<much> faster, cheaper, better).	1198	process simulations - use fork, it's I<much> faster, cheaper, better).
1044		1199
1045	(It might actually work, but you have been warned).	1200	(It might actually work, but you have been warned).
1046		1201
1047		1202
1048	=head1 BUGS	1203	=head1 BUGS
1049		1204
1050	While the goal of this module is to be correct, that unfortunately does	1205	While the goal of this module is to be correct, that unfortunately does
1051	not mean its bug-free, only that I think its design is bug-free. It is	1206	not mean it's bug-free, only that I think its design is bug-free. It is
1052	still relatively early in its development. If you keep reporting bugs they	1207	still relatively early in its development. If you keep reporting bugs they
1053	will be fixed swiftly, though.	1208	will be fixed swiftly, though.
1054		1209
1055	Please refrain from using rt.cpan.org or any other bug reporting	1210	Please refrain from using rt.cpan.org or any other bug reporting
1056	service. I put the contact address into my modules for a reason.	1211	service. I put the contact address into my modules for a reason.

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Comparing JSON-XS/XS.pm (file contents): Revision 1.80 by root, Sat Dec 29 17:22:39 2007 UTC vs. Revision 1.91 by root, Thu Mar 20 02:11:21 2008 UTC

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Comparing JSON-XS/XS.pm (file contents):
Revision 1.80 by root, Sat Dec 29 17:22:39 2007 UTC vs.
Revision 1.91 by root, Thu Mar 20 02:11:21 2008 UTC