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Revision: 1.179
Committed: Tue Sep 5 13:07:08 2017 UTC (6 years, 8 months ago) by root
Branch: MAIN
Changes since 1.178: +1 -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: [PATCH] Types::Serialiser: Inline true(), false() and error() functions
12
13 3.04 Thu Aug 17 04:30:47 CEST 2017
14 - change exponential realloc algorithm on encoding and string decoding to be
15 really exponential (this helps slow/debugging allocators such as libumem)
16 (reported by Matthew Horsfall).
17 - string encoding would needlessly overallocate output space
18 (testcase by Matthew Horsfall).
19 - be very paranoid about extending buffer lengths and croak if buffers get too large,
20 which might (or might not) improve security.
21 - add cbor-packed type to json_xs.
22 - switch from YAML to YAML::XS in json_xs, as YAML is way too buggy and outdated.
23
24 3.03 Wed Nov 16 20:20:59 CET 2016
25 - fix a bug introduced by a perl bug workaround that would cause
26 incremental parsing to fail with a sv_chop panic.
27 - json_xs: toformat failure error message fixed.
28 - json_xs: allow cyclic data structures in CBOR.
29
30 3.02 Fri Feb 26 22:45:20 CET 2016
31 - allow_nonref now affects booleans (\1, $Types::Serialiser::Boolean)
32 as well (reported by Alex Efros).
33 - allow literal tabs in strings in relaxed mode (patch by
34 lubo.rintel@gooddata.com).
35 - support "cbor" format in json_xs tool.
36 - support (and fix) calling encode and decode in list context
37 (reported by Вадим Власов).
38 - work around a bug in older perls crashing when presented
39 with shared hash keys (Reini Urban).
40 - use stability canary.
41
42 3.01 Tue Oct 29 16:55:15 CET 2013
43 - backport to perls < 5.18 (reported by Paul Howarth).
44
45 3.0 Tue Oct 29 01:35:37 CET 2013
46 - implemented an object tagging extension (using the
47 Types::Serialiser serialisation protocol).
48 - reworked the documentation regarding object serialisation,
49 add a new OBJECT SERIALISATION section that explains th
50 whole process.
51 - new setting: allow_tags.
52 - switch to Types::Serialiser booleans.
53 - remove to_json/from_json.
54 - other minor improvements to the documentation.
55
56 2.34 Thu May 23 11:30:34 CEST 2013
57 - work around bugs in perl 5.18 breaking more than 100
58 widely used modules, without a fix in sight because
59 p5pers don't care about CPAN anymore.
60 - when canonicalising, only allocate up to 64 hash key
61 pointers on the stack. for larger hashes, use the heap,
62 to avoid using too much stackspace.
63 - discuss the problem with setlocale (reported by a few victims).
64
65 2.33 Wed Aug 1 21:03:52 CEST 2012
66 - internal encode/decode XS wrappers did not expect stack
67 moves caused by callbacks (analyzed and testcase by Jesse Luehrs).
68 - add bencode as to/from option in bin/json_xs.
69 - add -e option to json_xs, and none and string in/out formats.
70
71 2.32 Thu Aug 11 19:06:38 CEST 2011
72 - fix a bug in the initial whitespace accumulation.
73
74 2.31 Wed Jul 27 17:53:05 CEST 2011
75 - don't accumulate initial whitespace in the incremental buffer
76 (this can be useful to allow whitespace-keepalive on a tcp
77 connection without triggering the max_size limit).
78 - properly croak on some invalid inputs that are not strings
79 (e.g. undef) when trying to decode a json text (reported
80 and analyzed by Goro Fuji).
81
82 2.3 Wed Aug 18 01:26:47 CEST 2010
83 - make sure decoder doesn't change the decoding in the incremental
84 parser (testcase provided by Hendrik Schumacher).
85 - applied patch by DaTa for Data::Dumper support in json_xs.
86 - added -t dump support to json_xs, using Data::Dump.
87 - added -f eval support to json_xs.
88
89 2.29 Wed Mar 17 02:39:12 CET 2010
90 - fix a memory leak when callbacks set using filter_json_object
91 or filter_json_single_key_object were called (great testcase
92 by Eric Wilhelm).
93
94 2.28 Thu Mar 11 20:30:46 CET 2010
95 - implement our own atof function - perl's can be orders of
96 magnitudes slower than even the system one. on the positive
97 side, ours seems to be more exact in general than perl's.
98 (testcase provided by Tim Meadowcroft).
99 - clarify floating point conversion issues a bit.
100 - update jpsykes csrf article url.
101 - updated benchmark section - JSON::PP became much faster!
102
103 2.27 Thu Jan 7 07:35:08 CET 2010
104 - support relaxed option inside the incremental parser
105 (testcase provided by IKEGAMI via Makamaka).
106
107 2.26 Sat Oct 10 03:26:19 CEST 2009
108 - big integers could become truncated (based on patch
109 by Strobl Anton).
110 - output format change: indent now adds a final newline, which is
111 more expected and more true to the documentation.
112
113 2.25 Sat Aug 8 12:04:41 CEST 2009
114 - the perl debugger completely breaks lvalue subs - try to work
115 around the issue.
116 - ignore RMAGICAL hashes w.r.t. CANONICAL.
117 - try to work around a possible char signedness issue on aix.
118 - require common sense.
119
120 2.24 Sat May 30 08:25:45 CEST 2009
121 - the incremental parser did not update its parse offset
122 pointer correctly when parsing utf8-strings (nicely
123 debugged by Martin Evans).
124 - appending a non-utf8-string to the incremental parser
125 in utf8 mode failed to upgrade the string.
126 - wording of parse error messages has been improved.
127
128 2.232 Sun Feb 22 11:12:25 CET 2009
129 - use an exponential algorithm to extend strings, to
130 help platforms with bad or abysmal==windows memory
131 allocater performance, at the expense of some memory
132 wastage (use shrink to recover this extra memory).
133 (nicely analysed by Dmitry Karasik).
134
135 2.2311 Thu Feb 19 02:12:54 CET 2009
136 - add a section "JSON and ECMAscript" to explain some
137 incompatibilities between the two (problem was noted by
138 various people).
139 - add t/20_faihu.t.
140
141 2.231 Thu Nov 20 04:59:08 CET 2008
142 - work around 5.10.0 magic bugs where manipulating magic values
143 (such as $1) would permanently damage them as perl would
144 ignore the magicalness, by making a full copy of the string,
145 reported by Dmitry Karasik.
146 - work around spurious warnings under older perl 5.8's.
147
148 2.23 Mon Sep 29 05:08:29 CEST 2008
149 - fix a compilation problem when perl is not using char * as, well,
150 char *.
151 - use PL_hexdigit in favour of rolling our own.
152
153 2.2222 Sun Jul 20 18:49:00 CEST 2008
154 - same game again, broken 5.10 finds yet another assertion
155 failure, and the workaround causes additional runtime warnings.
156 Work around the next assertion AND the warning. 5.10 seriously
157 needs to adjust it's attitude against working code.
158
159 2.222 Sat Jul 19 06:15:34 CEST 2008
160 - you work around one -DDEBUGGING assertion bug in perl 5.10
161 just to hit the next one. work around this one, too.
162
163 2.22 Tue Jul 15 13:26:51 CEST 2008
164 - allow higher nesting levels in incremental parser.
165 - error out earlier in some cases in the incremental parser
166 (as suggested by Yuval Kogman).
167 - improve incr-parser test (Yuval Kogman).
168
169 2.21 Tue Jun 3 08:43:23 CEST 2008
170 - (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
171 - remove the experimental status of the incremental parser interface.
172 - move =encoding around again, to avoid bugs with search.cpan.org.
173 when can we finally have utf-8 in pod???
174 - add ->incr_reset method.
175
176 2.2 Wed Apr 16 20:37:25 CEST 2008
177 - lifted the log2 rounding restriction of max_depth and max_size.
178 - make booleans mutable by creating a copy instead of handing out
179 the same scalar (reported by pasha sadri).
180 - added support for incremental json parsing (still EXPERIMENTAL).
181 - implemented and added a json_xs command line utility that can convert
182 from/to a number of serialisation formats - tell me if you need more.
183 - implement allow_unknown/get_allow_unknown methods.
184 - fixed documentation of max_depth w.r.t. higher and equal.
185 - moved down =encoding directive a bit, too much breaks if it's the first
186 pod directive :/.
187 - removed documentation section on other modules, it became somewhat
188 outdated and is nowadays mostly of historical interest.
189
190 2.1 Wed Mar 19 23:23:18 CET 2008
191 - update documentation here and there: add a large section
192 about utf8/latin1/ascii flags, add a security consideration
193 and extend and clarify the JSON and YAML section.
194 - medium speed enhancements when encoding/decoding non-ascii chars.
195 - minor speedup in number encoding case.
196 - extend and clarify the section on incompatibilities
197 between YAML and JSON.
198 - switch to static inline from just inline when using gcc.
199 - add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
200 - fix some issues with UV to JSON conversion of unknown impact.
201 - published the yahoo locals search result used in benchmarks as the
202 original url changes so comparison is impossible.
203
204 2.01 Wed Dec 5 11:40:28 CET 2007
205 - INCOMPATIBLE API CHANGE: to_json and from_json have been
206 renamed to encode_json/decode_json for JSON.pm compatibility.
207 The old functions croak and might be replaced by JSON.pm
208 comaptible versions in some later release.
209
210 2.0 Tue Dec 4 11:30:46 CET 2007
211 - this is supposed to be the first version of JSON::XS
212 compatible with version 2.0+ of the JSON module.
213 Using the JSON module as frontend to JSON::XS should be
214 as fast as using JSON::XS directly, so consider using it
215 instead.
216 - added get_* methods for all "simple" options.
217 - make JSON::XS subclassable.
218
219 1.53 Tue Nov 13 23:58:33 CET 2007
220 - minor doc clarifications.
221 - fixed many doc typos (patch by Thomas L. Shinnick).
222
223 1.52 Mon Oct 15 03:22:06 CEST 2007
224 - remove =encoding pod directive again, it confuses too many pod
225 parsers :/.
226
227 1.51 Sat Oct 13 03:55:56 CEST 2007
228 - encode empty arrays/hashes in a compact way when pretty is enabled.
229 - apparently JSON::XS was used to find some bugs in the
230 JSON_checker testsuite, so add (the corrected) JSON_checker tests to
231 the testsuite.
232 - quite a bit of doc updates/extension.
233 - require 5.8.2, as this seems to be the first unicode-stable version.
234
235 1.5 Tue Aug 28 04:05:38 CEST 2007
236 - add support for tied hashes, based on ideas and testcase by
237 Marcus Holland-Moritz.
238 - implemented relaxed parsing mode where some extensions are being
239 accepted. generation is still JSON-only.
240
241 1.44 Wed Aug 22 01:02:44 CEST 2007
242 - very experimental process-emulation support, slowing everything down.
243 the horribly broken perl threads are still not supported - YMMV.
244
245 1.43 Thu Jul 26 13:26:37 CEST 2007
246 - convert big json numbers exclusively consisting of digits to NV
247 only when there is no loss of precision, otherwise to string.
248
249 1.42 Tue Jul 24 00:51:18 CEST 2007
250 - fix a crash caused by not handling missing array elements
251 (report and testcase by Jay Kuri).
252
253 1.41 Tue Jul 10 18:21:44 CEST 2007
254 - fix compilation with NDEBUG (assert side-effect),
255 affects convert_blessed only.
256 - fix a bug in decode filters calling ENTER; SAVETMPS;
257 one time too often.
258 - catch a typical error in TO_JSON methods.
259 - antique-ised XS.xs again to work with outdated
260 C compilers (windows...).
261
262 1.4 Mon Jul 2 10:06:30 CEST 2007
263 - add convert_blessed setting.
264 - encode did not catch all blessed objects, encoding their
265 contents in most cases. This has been fixed by introducing
266 the allow_blessed setting.
267 - added filter_json_object and filter_json_single_key_object
268 settings that specify a callback to be called when
269 all/specific json objects are encountered.
270 - assume that most object keys are simple ascii words and
271 optimise this case, penalising the general case. This can
272 speed up decoding by 30% in typical cases and gives
273 a smaller and faster perl hash.
274 - implemented simpleminded, optional resource size checking
275 in decode_json.
276 - remove objToJson/jsonToObj aliases, as the next version
277 of JSON will not have them either.
278 - bit the bullet and converted the very simple json object
279 into a more complex one.
280 - work around a bug where perl wrongly claims an integer
281 is not an integer.
282 - unbundle JSON::XS::Boolean into own pm file so Storable
283 and similar modules can resolve the overloading when thawing.
284
285 1.3 Sun Jun 24 01:55:02 CEST 2007
286 - make JSON::XS::true and false special overloaded objects
287 and return those instead of 1 and 0 for those json atoms
288 (JSON::PP compatibility is NOT achieved yet).
289 - add JSON::XS::is_bool predicate to test for those special
290 values.
291 - add a reference to
292 http://jpsykes.com/47/practical-csrf-and-json-security.
293 - removed require 5.8.8 again, it is just not very expert-friendly.
294 Also try to be more compatible with slightly older versions,
295 which are not recommended (because they are buggy).
296
297 1.24 Mon Jun 11 05:40:49 CEST 2007
298 - added informative section on JSON-as-YAML.
299 - get rid of some c99-isms again.
300 - localise dec->cur in decode_str, speeding up
301 string decoding considerably (>15% on my amd64 + gcc).
302 - increased SHORT_STRING_LEN to 16kb: stack space is
303 usually plenty, and this actually saves memory
304 when !shrinking as short strings will fit perfectly.
305
306 1.23 Wed Jun 6 20:13:06 CEST 2007
307 - greatly improved small integer encoding and decoding speed.
308 - implement a number of µ-optimisations.
309 - updated benchmarks.
310
311 1.22 Thu May 24 00:07:25 CEST 2007
312 - require 5.8.8 explicitly as older perls do not seem to offer
313 the required macros.
314 - possibly made it compile on so-called C compilers by microsoft.
315
316 1.21 Wed May 9 18:40:32 CEST 2007
317 - character offset reported for trailing garbage was random.
318
319 1.2 Wed May 9 18:35:01 CEST 2007
320 - decode did not work with magical scalars (doh!).
321 - added latin1 flag to produce JSON texts in the latin1 subset
322 of unicode.
323 - flag trailing garbage as error.
324 - new decode_prefix method that returns the number
325 of characters consumed by a decode.
326 - max octets/char in perls UTF-X is actually 13, not 11,
327 as pointed out by Glenn Linderman.
328 - fixed typoe reported by YAMASHINA Hio.
329
330 1.11 Mon Apr 9 07:05:49 CEST 2007
331 - properly 0-terminate sv's returned by encode to help
332 C libraries that expect that 0 to be there.
333 - partially "port" JSON from C to microsofts fucking broken
334 pseudo-C. They should be burned to the ground for pissing
335 on standards. And I should be stoned for even trying to
336 support this filthy excuse for a c compiler.
337
338 1.1 Wed Apr 4 01:45:00 CEST 2007
339 - clarify documentation (pointed out by Quinn Weaver).
340 - decode_utf8 sometimes did not correctly flag errors,
341 leading to segfaults.
342 - further reduced default nesting depth to 512 due to the test
343 failure by that anonymous "chris" whose e-mail address seems
344 to be impossible to get. Tests on other freebsd systems indicate
345 that this is likely a problem in his/her configuration and not this
346 module.
347 - renamed json => JSON in error messages.
348 - corrected the character offset in some error messages.
349
350 1.01 Sat Mar 31 16:15:40 CEST 2007
351 - do not segfault when from_json/decode gets passed
352 a non-string object (reported by Florian Ragwitz).
353 This has no effect on normal operation.
354
355 1.0 Thu Mar 29 04:43:34 CEST 2007
356 - the long awaited (by me) 1.0 version.
357 - add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
358 true and false.
359 - add some more notes to shrink, as suggested by Alex Efros.
360 - improve testsuite.
361 - halve the default nesting depth limit, to hopefully make it
362 work on Freebsd (unfortunately, the cpan tester did not
363 send me his report, so I cannot ask about the stack limit on fbsd).
364
365 0.8 Mon Mar 26 00:10:48 CEST 2007
366 - fix a memleak when decoding hashes.
367 - export jsonToBj and objToJson as aliases
368 to to_json and from_json, to reduce incompatibilities
369 between JSON/JSON::PC and JSON::XS. (experimental).
370 - implement a maximum nesting depth for both en- and de-coding.
371 - added a security considerations sections.
372
373 0.7 Sun Mar 25 01:46:30 CET 2007
374 - code cleanup.
375 - fix a memory overflow bug when indenting.
376 - pretty-printing now up to 15% faster.
377 - improve decoding speed of strings by
378 up to 50% by specialcasing short strings.
379 - further decoding speedups for strings using
380 lots of \u escapes.
381 - improve utf8 decoding speed for U+80 .. U+7FF.
382
383 0.5 Sat Mar 24 20:41:51 CET 2007
384 - added the UTF-16 encoding example hinted at in previous
385 versions.
386 - minor documentation fixes.
387 - fix a bug in and optimise canonicalising fastpath
388 (reported by Craig Manley).
389 - remove a subtest that breaks with bleadperl (reported
390 by Andreas König).
391
392 0.31 Sat Mar 24 02:14:34 CET 2007
393 - documentation updates.
394 - do some casting to hopefully fix Andreas' problem.
395 - nuke bogus json rpc stuff.
396
397 0.3 Fri Mar 23 19:33:21 CET 2007
398 - remove spurious PApp::Util reference (John McNamara).
399 - adapted lots of tests from other json modules
400 (idea by Chris Carline).
401 - documented mapping from json to perl and vice versa.
402 - improved the documentation by adding more examples.
403 - added short escaping forms, reducing the created
404 json texts a bit.
405 - added shrink flag.
406 - when flag methods are called without enable argument
407 they will by default enable their flag.
408 - considerably improved string encoding speed (at least
409 with gcc 4).
410 - added a test that covers lots of different characters.
411 - clarified some error messages.
412 - error messages now use correct character offset
413 with F_UTF8.
414 - improve the "no bytes" and "no warnings" hacks in
415 case the called functions do... stuff.
416 - croak when encoding to ascii and an out-of-range
417 (non-unicode) codepoint is encountered.
418
419 0.2 Fri Mar 23 00:23:34 CET 2007
420 - the "could not sleep without debugging release".
421 it should basically work now, with many bugs as
422 no production tests have been run yet.
423 - added more testcases.
424 - the expected shitload of bugfixes.
425 - handle utf8 flag correctly in decode.
426 - fix segfault in decoder.
427 - utf8n_to_uvuni sets retlen to -1, but retlen is an
428 unsigned types (argh).
429 - fix decoding of utf-8 strings.
430 - improved error diagnostics.
431 - fix decoding of 'null'.
432 - fix parsing of empty array/hashes
433 - silence warnings when we prepare the croak message.
434
435 0.1 Thu Mar 22 22:13:43 CET 2007
436 - first release, very untested, basically just to claim
437 the namespace.
438
439 0.01 Thu Mar 22 06:08:12 CET 2007
440 - original version; cloned from Convert-Scalar
441