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Revision: 1.177
Committed: Thu Aug 17 01:42:19 2017 UTC (6 years, 9 months ago) by root
Branch: MAIN
Changes since 1.176: +11 -0 lines
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# Content
1 Revision history for Perl extension JSON::XS
2
3 TODO: maybe detetc and croak on more invalid inputs (e.g. +-inf/nan)
4 TODO: maybe avoid the reblessing and better support readonly objects.
5 TODO: http://stevehanov.ca/blog/index.php?id=104 compression
6 TODO: how to cope with tagged values and standard json decoders
7 TODO: investigate magic (Eric Brine)
8 TODO: rfc7464
9 TODO: Victor Efimov
10 TODO: move json_xs to types::serialiser
11 TODO: Matthew Horsfall slow performance with libumem due to many need reallocs: perl -MJSON::XS -e 'my $x = join q{}, map { chr rand 256 } (0 ..1e6); $j = encode_json([ $x ]);'
12
13 TODO: fix overruns in json_sv_grow
14 TODO: change threading doc wording
15 - change exponential realloc algorithm on encoding and string decoding to be
16 really exponential (this helps slow/debugging allocators such as libumem)
17 (reported by Matthew Horsfall).
18 - string encoding would needlessly overallocate output space
19 (testcase by Matthew Horsfall).
20 - be very paranoid about extending buffer lengths and croak if buffers get too large,
21 which might (or might not) improve security.
22 - add cbor-packed type to json_xs.
23 - switch from YAML to YAML::XS in json_xs, as YAML is way too buggy and outdated.
24
25 3.03 Wed Nov 16 20:20:59 CET 2016
26 - fix a bug introduced by a perl bug workaround that would cause
27 incremental parsing to fail with a sv_chop panic.
28 - json_xs: toformat failure error message fixed.
29 - json_xs: allow cyclic data structures in CBOR.
30
31 3.02 Fri Feb 26 22:45:20 CET 2016
32 - allow_nonref now affects booleans (\1, $Types::Serialiser::Boolean)
33 as well (reported by Alex Efros).
34 - allow literal tabs in strings in relaxed mode (patch by
35 lubo.rintel@gooddata.com).
36 - support "cbor" format in json_xs tool.
37 - support (and fix) calling encode and decode in list context
38 (reported by Вадим Власов).
39 - work around a bug in older perls crashing when presented
40 with shared hash keys (Reini Urban).
41 - use stability canary.
42
43 3.01 Tue Oct 29 16:55:15 CET 2013
44 - backport to perls < 5.18 (reported by Paul Howarth).
45
46 3.0 Tue Oct 29 01:35:37 CET 2013
47 - implemented an object tagging extension (using the
48 Types::Serialiser serialisation protocol).
49 - reworked the documentation regarding object serialisation,
50 add a new OBJECT SERIALISATION section that explains th
51 whole process.
52 - new setting: allow_tags.
53 - switch to Types::Serialiser booleans.
54 - remove to_json/from_json.
55 - other minor improvements to the documentation.
56
57 2.34 Thu May 23 11:30:34 CEST 2013
58 - work around bugs in perl 5.18 breaking more than 100
59 widely used modules, without a fix in sight because
60 p5pers don't care about CPAN anymore.
61 - when canonicalising, only allocate up to 64 hash key
62 pointers on the stack. for larger hashes, use the heap,
63 to avoid using too much stackspace.
64 - discuss the problem with setlocale (reported by a few victims).
65
66 2.33 Wed Aug 1 21:03:52 CEST 2012
67 - internal encode/decode XS wrappers did not expect stack
68 moves caused by callbacks (analyzed and testcase by Jesse Luehrs).
69 - add bencode as to/from option in bin/json_xs.
70 - add -e option to json_xs, and none and string in/out formats.
71
72 2.32 Thu Aug 11 19:06:38 CEST 2011
73 - fix a bug in the initial whitespace accumulation.
74
75 2.31 Wed Jul 27 17:53:05 CEST 2011
76 - don't accumulate initial whitespace in the incremental buffer
77 (this can be useful to allow whitespace-keepalive on a tcp
78 connection without triggering the max_size limit).
79 - properly croak on some invalid inputs that are not strings
80 (e.g. undef) when trying to decode a json text (reported
81 and analyzed by Goro Fuji).
82
83 2.3 Wed Aug 18 01:26:47 CEST 2010
84 - make sure decoder doesn't change the decoding in the incremental
85 parser (testcase provided by Hendrik Schumacher).
86 - applied patch by DaTa for Data::Dumper support in json_xs.
87 - added -t dump support to json_xs, using Data::Dump.
88 - added -f eval support to json_xs.
89
90 2.29 Wed Mar 17 02:39:12 CET 2010
91 - fix a memory leak when callbacks set using filter_json_object
92 or filter_json_single_key_object were called (great testcase
93 by Eric Wilhelm).
94
95 2.28 Thu Mar 11 20:30:46 CET 2010
96 - implement our own atof function - perl's can be orders of
97 magnitudes slower than even the system one. on the positive
98 side, ours seems to be more exact in general than perl's.
99 (testcase provided by Tim Meadowcroft).
100 - clarify floating point conversion issues a bit.
101 - update jpsykes csrf article url.
102 - updated benchmark section - JSON::PP became much faster!
103
104 2.27 Thu Jan 7 07:35:08 CET 2010
105 - support relaxed option inside the incremental parser
106 (testcase provided by IKEGAMI via Makamaka).
107
108 2.26 Sat Oct 10 03:26:19 CEST 2009
109 - big integers could become truncated (based on patch
110 by Strobl Anton).
111 - output format change: indent now adds a final newline, which is
112 more expected and more true to the documentation.
113
114 2.25 Sat Aug 8 12:04:41 CEST 2009
115 - the perl debugger completely breaks lvalue subs - try to work
116 around the issue.
117 - ignore RMAGICAL hashes w.r.t. CANONICAL.
118 - try to work around a possible char signedness issue on aix.
119 - require common sense.
120
121 2.24 Sat May 30 08:25:45 CEST 2009
122 - the incremental parser did not update its parse offset
123 pointer correctly when parsing utf8-strings (nicely
124 debugged by Martin Evans).
125 - appending a non-utf8-string to the incremental parser
126 in utf8 mode failed to upgrade the string.
127 - wording of parse error messages has been improved.
128
129 2.232 Sun Feb 22 11:12:25 CET 2009
130 - use an exponential algorithm to extend strings, to
131 help platforms with bad or abysmal==windows memory
132 allocater performance, at the expense of some memory
133 wastage (use shrink to recover this extra memory).
134 (nicely analysed by Dmitry Karasik).
135
136 2.2311 Thu Feb 19 02:12:54 CET 2009
137 - add a section "JSON and ECMAscript" to explain some
138 incompatibilities between the two (problem was noted by
139 various people).
140 - add t/20_faihu.t.
141
142 2.231 Thu Nov 20 04:59:08 CET 2008
143 - work around 5.10.0 magic bugs where manipulating magic values
144 (such as $1) would permanently damage them as perl would
145 ignore the magicalness, by making a full copy of the string,
146 reported by Dmitry Karasik.
147 - work around spurious warnings under older perl 5.8's.
148
149 2.23 Mon Sep 29 05:08:29 CEST 2008
150 - fix a compilation problem when perl is not using char * as, well,
151 char *.
152 - use PL_hexdigit in favour of rolling our own.
153
154 2.2222 Sun Jul 20 18:49:00 CEST 2008
155 - same game again, broken 5.10 finds yet another assertion
156 failure, and the workaround causes additional runtime warnings.
157 Work around the next assertion AND the warning. 5.10 seriously
158 needs to adjust it's attitude against working code.
159
160 2.222 Sat Jul 19 06:15:34 CEST 2008
161 - you work around one -DDEBUGGING assertion bug in perl 5.10
162 just to hit the next one. work around this one, too.
163
164 2.22 Tue Jul 15 13:26:51 CEST 2008
165 - allow higher nesting levels in incremental parser.
166 - error out earlier in some cases in the incremental parser
167 (as suggested by Yuval Kogman).
168 - improve incr-parser test (Yuval Kogman).
169
170 2.21 Tue Jun 3 08:43:23 CEST 2008
171 - (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
172 - remove the experimental status of the incremental parser interface.
173 - move =encoding around again, to avoid bugs with search.cpan.org.
174 when can we finally have utf-8 in pod???
175 - add ->incr_reset method.
176
177 2.2 Wed Apr 16 20:37:25 CEST 2008
178 - lifted the log2 rounding restriction of max_depth and max_size.
179 - make booleans mutable by creating a copy instead of handing out
180 the same scalar (reported by pasha sadri).
181 - added support for incremental json parsing (still EXPERIMENTAL).
182 - implemented and added a json_xs command line utility that can convert
183 from/to a number of serialisation formats - tell me if you need more.
184 - implement allow_unknown/get_allow_unknown methods.
185 - fixed documentation of max_depth w.r.t. higher and equal.
186 - moved down =encoding directive a bit, too much breaks if it's the first
187 pod directive :/.
188 - removed documentation section on other modules, it became somewhat
189 outdated and is nowadays mostly of historical interest.
190
191 2.1 Wed Mar 19 23:23:18 CET 2008
192 - update documentation here and there: add a large section
193 about utf8/latin1/ascii flags, add a security consideration
194 and extend and clarify the JSON and YAML section.
195 - medium speed enhancements when encoding/decoding non-ascii chars.
196 - minor speedup in number encoding case.
197 - extend and clarify the section on incompatibilities
198 between YAML and JSON.
199 - switch to static inline from just inline when using gcc.
200 - add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
201 - fix some issues with UV to JSON conversion of unknown impact.
202 - published the yahoo locals search result used in benchmarks as the
203 original url changes so comparison is impossible.
204
205 2.01 Wed Dec 5 11:40:28 CET 2007
206 - INCOMPATIBLE API CHANGE: to_json and from_json have been
207 renamed to encode_json/decode_json for JSON.pm compatibility.
208 The old functions croak and might be replaced by JSON.pm
209 comaptible versions in some later release.
210
211 2.0 Tue Dec 4 11:30:46 CET 2007
212 - this is supposed to be the first version of JSON::XS
213 compatible with version 2.0+ of the JSON module.
214 Using the JSON module as frontend to JSON::XS should be
215 as fast as using JSON::XS directly, so consider using it
216 instead.
217 - added get_* methods for all "simple" options.
218 - make JSON::XS subclassable.
219
220 1.53 Tue Nov 13 23:58:33 CET 2007
221 - minor doc clarifications.
222 - fixed many doc typos (patch by Thomas L. Shinnick).
223
224 1.52 Mon Oct 15 03:22:06 CEST 2007
225 - remove =encoding pod directive again, it confuses too many pod
226 parsers :/.
227
228 1.51 Sat Oct 13 03:55:56 CEST 2007
229 - encode empty arrays/hashes in a compact way when pretty is enabled.
230 - apparently JSON::XS was used to find some bugs in the
231 JSON_checker testsuite, so add (the corrected) JSON_checker tests to
232 the testsuite.
233 - quite a bit of doc updates/extension.
234 - require 5.8.2, as this seems to be the first unicode-stable version.
235
236 1.5 Tue Aug 28 04:05:38 CEST 2007
237 - add support for tied hashes, based on ideas and testcase by
238 Marcus Holland-Moritz.
239 - implemented relaxed parsing mode where some extensions are being
240 accepted. generation is still JSON-only.
241
242 1.44 Wed Aug 22 01:02:44 CEST 2007
243 - very experimental process-emulation support, slowing everything down.
244 the horribly broken perl threads are still not supported - YMMV.
245
246 1.43 Thu Jul 26 13:26:37 CEST 2007
247 - convert big json numbers exclusively consisting of digits to NV
248 only when there is no loss of precision, otherwise to string.
249
250 1.42 Tue Jul 24 00:51:18 CEST 2007
251 - fix a crash caused by not handling missing array elements
252 (report and testcase by Jay Kuri).
253
254 1.41 Tue Jul 10 18:21:44 CEST 2007
255 - fix compilation with NDEBUG (assert side-effect),
256 affects convert_blessed only.
257 - fix a bug in decode filters calling ENTER; SAVETMPS;
258 one time too often.
259 - catch a typical error in TO_JSON methods.
260 - antique-ised XS.xs again to work with outdated
261 C compilers (windows...).
262
263 1.4 Mon Jul 2 10:06:30 CEST 2007
264 - add convert_blessed setting.
265 - encode did not catch all blessed objects, encoding their
266 contents in most cases. This has been fixed by introducing
267 the allow_blessed setting.
268 - added filter_json_object and filter_json_single_key_object
269 settings that specify a callback to be called when
270 all/specific json objects are encountered.
271 - assume that most object keys are simple ascii words and
272 optimise this case, penalising the general case. This can
273 speed up decoding by 30% in typical cases and gives
274 a smaller and faster perl hash.
275 - implemented simpleminded, optional resource size checking
276 in decode_json.
277 - remove objToJson/jsonToObj aliases, as the next version
278 of JSON will not have them either.
279 - bit the bullet and converted the very simple json object
280 into a more complex one.
281 - work around a bug where perl wrongly claims an integer
282 is not an integer.
283 - unbundle JSON::XS::Boolean into own pm file so Storable
284 and similar modules can resolve the overloading when thawing.
285
286 1.3 Sun Jun 24 01:55:02 CEST 2007
287 - make JSON::XS::true and false special overloaded objects
288 and return those instead of 1 and 0 for those json atoms
289 (JSON::PP compatibility is NOT achieved yet).
290 - add JSON::XS::is_bool predicate to test for those special
291 values.
292 - add a reference to
293 http://jpsykes.com/47/practical-csrf-and-json-security.
294 - removed require 5.8.8 again, it is just not very expert-friendly.
295 Also try to be more compatible with slightly older versions,
296 which are not recommended (because they are buggy).
297
298 1.24 Mon Jun 11 05:40:49 CEST 2007
299 - added informative section on JSON-as-YAML.
300 - get rid of some c99-isms again.
301 - localise dec->cur in decode_str, speeding up
302 string decoding considerably (>15% on my amd64 + gcc).
303 - increased SHORT_STRING_LEN to 16kb: stack space is
304 usually plenty, and this actually saves memory
305 when !shrinking as short strings will fit perfectly.
306
307 1.23 Wed Jun 6 20:13:06 CEST 2007
308 - greatly improved small integer encoding and decoding speed.
309 - implement a number of µ-optimisations.
310 - updated benchmarks.
311
312 1.22 Thu May 24 00:07:25 CEST 2007
313 - require 5.8.8 explicitly as older perls do not seem to offer
314 the required macros.
315 - possibly made it compile on so-called C compilers by microsoft.
316
317 1.21 Wed May 9 18:40:32 CEST 2007
318 - character offset reported for trailing garbage was random.
319
320 1.2 Wed May 9 18:35:01 CEST 2007
321 - decode did not work with magical scalars (doh!).
322 - added latin1 flag to produce JSON texts in the latin1 subset
323 of unicode.
324 - flag trailing garbage as error.
325 - new decode_prefix method that returns the number
326 of characters consumed by a decode.
327 - max octets/char in perls UTF-X is actually 13, not 11,
328 as pointed out by Glenn Linderman.
329 - fixed typoe reported by YAMASHINA Hio.
330
331 1.11 Mon Apr 9 07:05:49 CEST 2007
332 - properly 0-terminate sv's returned by encode to help
333 C libraries that expect that 0 to be there.
334 - partially "port" JSON from C to microsofts fucking broken
335 pseudo-C. They should be burned to the ground for pissing
336 on standards. And I should be stoned for even trying to
337 support this filthy excuse for a c compiler.
338
339 1.1 Wed Apr 4 01:45:00 CEST 2007
340 - clarify documentation (pointed out by Quinn Weaver).
341 - decode_utf8 sometimes did not correctly flag errors,
342 leading to segfaults.
343 - further reduced default nesting depth to 512 due to the test
344 failure by that anonymous "chris" whose e-mail address seems
345 to be impossible to get. Tests on other freebsd systems indicate
346 that this is likely a problem in his/her configuration and not this
347 module.
348 - renamed json => JSON in error messages.
349 - corrected the character offset in some error messages.
350
351 1.01 Sat Mar 31 16:15:40 CEST 2007
352 - do not segfault when from_json/decode gets passed
353 a non-string object (reported by Florian Ragwitz).
354 This has no effect on normal operation.
355
356 1.0 Thu Mar 29 04:43:34 CEST 2007
357 - the long awaited (by me) 1.0 version.
358 - add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
359 true and false.
360 - add some more notes to shrink, as suggested by Alex Efros.
361 - improve testsuite.
362 - halve the default nesting depth limit, to hopefully make it
363 work on Freebsd (unfortunately, the cpan tester did not
364 send me his report, so I cannot ask about the stack limit on fbsd).
365
366 0.8 Mon Mar 26 00:10:48 CEST 2007
367 - fix a memleak when decoding hashes.
368 - export jsonToBj and objToJson as aliases
369 to to_json and from_json, to reduce incompatibilities
370 between JSON/JSON::PC and JSON::XS. (experimental).
371 - implement a maximum nesting depth for both en- and de-coding.
372 - added a security considerations sections.
373
374 0.7 Sun Mar 25 01:46:30 CET 2007
375 - code cleanup.
376 - fix a memory overflow bug when indenting.
377 - pretty-printing now up to 15% faster.
378 - improve decoding speed of strings by
379 up to 50% by specialcasing short strings.
380 - further decoding speedups for strings using
381 lots of \u escapes.
382 - improve utf8 decoding speed for U+80 .. U+7FF.
383
384 0.5 Sat Mar 24 20:41:51 CET 2007
385 - added the UTF-16 encoding example hinted at in previous
386 versions.
387 - minor documentation fixes.
388 - fix a bug in and optimise canonicalising fastpath
389 (reported by Craig Manley).
390 - remove a subtest that breaks with bleadperl (reported
391 by Andreas König).
392
393 0.31 Sat Mar 24 02:14:34 CET 2007
394 - documentation updates.
395 - do some casting to hopefully fix Andreas' problem.
396 - nuke bogus json rpc stuff.
397
398 0.3 Fri Mar 23 19:33:21 CET 2007
399 - remove spurious PApp::Util reference (John McNamara).
400 - adapted lots of tests from other json modules
401 (idea by Chris Carline).
402 - documented mapping from json to perl and vice versa.
403 - improved the documentation by adding more examples.
404 - added short escaping forms, reducing the created
405 json texts a bit.
406 - added shrink flag.
407 - when flag methods are called without enable argument
408 they will by default enable their flag.
409 - considerably improved string encoding speed (at least
410 with gcc 4).
411 - added a test that covers lots of different characters.
412 - clarified some error messages.
413 - error messages now use correct character offset
414 with F_UTF8.
415 - improve the "no bytes" and "no warnings" hacks in
416 case the called functions do... stuff.
417 - croak when encoding to ascii and an out-of-range
418 (non-unicode) codepoint is encountered.
419
420 0.2 Fri Mar 23 00:23:34 CET 2007
421 - the "could not sleep without debugging release".
422 it should basically work now, with many bugs as
423 no production tests have been run yet.
424 - added more testcases.
425 - the expected shitload of bugfixes.
426 - handle utf8 flag correctly in decode.
427 - fix segfault in decoder.
428 - utf8n_to_uvuni sets retlen to -1, but retlen is an
429 unsigned types (argh).
430 - fix decoding of utf-8 strings.
431 - improved error diagnostics.
432 - fix decoding of 'null'.
433 - fix parsing of empty array/hashes
434 - silence warnings when we prepare the croak message.
435
436 0.1 Thu Mar 22 22:13:43 CET 2007
437 - first release, very untested, basically just to claim
438 the namespace.
439
440 0.01 Thu Mar 22 06:08:12 CET 2007
441 - original version; cloned from Convert-Scalar
442