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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.23 by root, Wed Nov 20 16:19:47 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
24		66
25	// known tags	67	// known tags
26	enum cbor_tag	68	enum cbor_tag
27	{	69	{
28	// inofficial extensions (pending iana registration)	70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		78
37	// rfc7049	79	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
44		86
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		91
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		97
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	99	};
58		100
59	#define F_SHRINK 0x00000001UL	101	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	103	#define F_ALLOW_SHARING 0x00000004UL
		104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	106	#define F_PACK_STRINGS 0x00000020UL
		107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
63		110
64	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
65		112
66	#define SB do {	113	#define SB do {
67	#define SE } while (0)	114	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
81	#endif	128	#endif
82		129
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		132
86	typedef struct {	133	typedef struct {
87	U32 flags;	134	U32 flags;
88	U32 max_depth;	135	U32 max_depth;
89	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
		138
		139	// for the incremental parser
		140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	143	} CBOR;
91		144
92	ecb_inline void	145	ecb_inline void
93	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
94	{	147	{
95	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
97	}	157	}
98		158
99	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	160	// utility functions
101		161
…		…
127		187
128	// minimum length of a string to be registered for stringref	188	// minimum length of a string to be registered for stringref
129	ecb_inline int	189	ecb_inline int
130	minimum_string_length (UV idx)	190	minimum_string_length (UV idx)
131	{	191	{
132	return idx > 23	192
133	? idx > 0xffU	193	return idx <= 23 ? 3
134	? idx > 0xffffU	194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	196	: idx <= 0xffffffffU ? 7
136	? 7	197	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	198	}
142		199
143	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
144	// encoder	201	// encoder
145		202
…		…
158	} enc_t;	215	} enc_t;
159		216
160	ecb_inline void	217	ecb_inline void
161	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
162	{	219	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	221	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
179	static void	236	static void
180	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
181	{	238	{
182	need (enc, 9);	239	need (enc, 9);
183		240
184	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
186	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
187	{	244	{
188	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	246	*enc->cur++ = len;
190	}	247	}
191	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
192	{	249	{
193	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	252	*enc->cur++ = len;
196	}	253	}
197	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
198	{	255	{
199	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	260	*enc->cur++ = len;
204	}	261	}
205	else	262	else
206	{	263	{
207	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
217	}	274	}
218		275
219	ecb_inline void	276	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	277	encode_tag (enc_t *enc, UV tag)
221	{	278	{
222	encode_uint (enc, 0xc0, tag);	279	encode_uint (enc, MAJOR_TAG, tag);
223	}	280	}
224		281
225	static void	282	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	285	{
		286	STRLEN ulen = len;
		287	U8 *p, *pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	*enc->cur++ = *p;
		298	else
		299	{
		300	*enc->cur++ = 0xc0 + (*p >> 6);
		301	*enc->cur++ = 0x80 + (*p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		316	need (enc, len);
		317	memcpy (enc->cur, str, len);
		318	enc->cur += len;
		319	}
		320
		321	ecb_inline void
		322	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		323	{
228	if (ecb_expect_false (enc->cbor.flags & F_DEDUP_STRINGS))	324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	325	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		327
232	if (SvOK (*svp))	328	if (SvOK (*svp))
233	{	329	{
234	// already registered, use stringref	330	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	331	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	333	return;
238	}	334	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	335	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	336	{
241	// register only	337	// register only
242	sv_setuv (*svp, enc->stringref_idx);	338	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	339	++enc->stringref_idx;
244	}	340	}
245	}	341	}
246		342
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	343	encode_str (enc, upgrade_utf8, utf8, str, len);
248	need (enc, len);
249	memcpy (enc->cur, str, len);
250	enc->cur += len;
251	}	344	}
252		345
253	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
254		347
255	static void	348	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
262		355
263	++enc->depth;	356	++enc->depth;
264		357
265	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		359
		360	if (SvMAGICAL (av))
267	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
268	{	362	{
269	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
272		372
273	--enc->depth;	373	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t *enc, HE *he)
278	{
279	}	374	}
280		375
281	static void	376	static void
282	encode_hv (enc_t *enc, HV *hv)	377	encode_hv (enc_t *enc, HV *hv)
283	{	378	{
…		…
290		385
291	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
293		388
294	if (mg)	389	if (mg)
295	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
296	else	391	else
297	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
298		393
299	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
300	{	395	{
301	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
303	else	398	else
304	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
305		400
306	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
307	}	402	}
308		403
309	if (mg)	404	if (mg)
310	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
311		406
312	--enc->depth;	407	--enc->depth;
313	}	408	}
314		409
315	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
316	static void	411	static void
317	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
318	{	413	{
319	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
320
321	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
322	&& ecb_expect_false (SvREFCNT (sv) > 1))
323	{
324	if (!enc->shareable)
325	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
326
327	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
328
329	if (SvOK (*svp))
330	{
331	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
332	encode_uint (enc, 0x00, SvUV (*svp));
333	return;
334	}
335	else
336	{
337	sv_setuv (*svp, enc->shareable_idx);
338	++enc->shareable_idx;
339	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
340	}
341	}
342		415
343	svtype svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
344		417
345	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
346	{	419	{
…		…
353	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
354	? cbor_tagged_stash	427	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		429
357	HV *stash = SvSTASH (sv);	430	HV *stash = SvSTASH (sv);
358	GV *method;
359		431
360	if (stash == boolean_stash)	432	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
362	else if (stash == error_stash)	437	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 | 23);	438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
364	else if (stash == tagged_stash)	442	else if (stash == tagged_stash)
365	{	443	{
366	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		446
369	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
370	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	448	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		459
		460	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
371	}	463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
		467	}
		468	else
		469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	485	{
374	dSP;	486	dSP;
375		487
376	ENTER; SAVETMPS; PUSHMARK (SP);	488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
377	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		492
380	PUTBACK;	493	PUTBACK;
381	// G_SCALAR ensures that return value is 1	494	// G_SCALAR ensures that return value is 1
…		…
394	}	507	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	509	{
397	dSP;	510	dSP;
398		511
399	ENTER; SAVETMPS; PUSHMARK (SP);	512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
400	EXTEND (SP, 2);	515	EXTEND (SP, 2);
401	// we re-bless the reference to get overload and other niceties right	516	// we re-bless the reference to get overload and other niceties right
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	518	PUSHs (sv_cbor);
404		519
…		…
409	// catch this surprisingly common error	524	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
411	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
412		527
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	529	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		531
417	while (count)	532	while (count)
418	encode_sv (enc, SP[1 - count--]);	533	encode_sv (enc, SP[1 - count--]);
419		534
420	PUTBACK;	535	PUTBACK;
…		…
441	{	556	{
442	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
443		558
444	need (enc, 9);	559	need (enc, 9);
445		560
446	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	563	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
450	{	565	{
451	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
452		567
453	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
454		569
455	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
456	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
457		572
458	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
460	}	575	}
461	else	576	else
462	{	577	{
463	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
464		579
465	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
466		581
467	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
468	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
469		584
470	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
479		594
480	if (SvPOKp (sv))	595	if (SvPOKp (sv))
481	{	596	{
482	STRLEN len;	597	STRLEN len;
483	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	600	}
486	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	602	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
489	{	604	{
490	if (SvIsUV (sv))	605	if (SvIsUV (sv))
491	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
492	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
493	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
494	else	609	else
495	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
496	}	611	}
497	else if (SvROK (sv))	612	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	614	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
503	else	618	else
504	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	621	}
507		622
508	static SV *	623	static SV *
509	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
510	{	625	{
511	enc_t enc = { };	626	enc_t enc = { 0 };
512		627
513	enc.cbor = *cbor;	628	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
517		632
518	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
519		634
520	if (cbor->flags & F_DEDUP_STRINGS)	635	if (cbor->flags & F_PACK_STRINGS)
521	{	636	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	638	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
524	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	639	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
525	}	640	}
…		…
547	CBOR cbor;	662	CBOR cbor;
548	U32 depth; // recursion depth	663	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
550	AV *shareable;	665	AV *shareable;
551	AV *stringref;	666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
552	} dec_t;	669	} dec_t;
553		670
554	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
555		678
556	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
557		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t *dec, const char *reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
558	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
559	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
560		715
561	static UV	716	static UV
562	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
563	{	718	{
564	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
565	{	720	++dec->cur;
566	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
567	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
568	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
569	return *dec->cur++ & 31;
570		721
571	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
572	WANT (2);	726	WANT (1);
573	dec->cur += 2;	727	dec->cur += 1;
574	return dec->cur[-1];	728	return dec->cur[-1];
575		729	}
576	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
577	WANT (3);	732	WANT (2);
578	dec->cur += 3;	733	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
580	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
581		736	}
582	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
583	WANT (5);	739	WANT (4);
584	dec->cur += 5;	740	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
586	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
587	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
588	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
589		745	}
590	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
591	WANT (9);	748	WANT (8);
592	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
593	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
594	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
595	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
596	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
597	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
601		764	}
602	default:	765	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		767
606	fail:	768	fail:
607	return 0;	769	return 0;
608	}	770	}
609		771
…		…
614	{	776	{
615	AV *av = newAV ();	777	AV *av = newAV ();
616		778
617	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
618		780
619	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
620	{	782	{
621	++dec->cur;	783	++dec->cur;
622		784
623	for (;;)	785	for (;;)
624	{	786	{
625	WANT (1);	787	WANT (1);
626		788
627	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
628	{	790	{
629	++dec->cur;	791	++dec->cur;
630	break;	792	break;
631	}	793	}
632		794
633	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
634	}	796	}
635	}	797	}
636	else	798	else
637	{	799	{
638	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
639		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
640	av_fill (av, len - 1);	803	av_fill (av, len - 1);
641		804
642	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
644	}	807	}
…		…
657	{	820	{
658	// for speed reasons, we specialcase single-string	821	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	822	// byte or utf-8 strings as keys, but only when !stringref
660		823
661	if (ecb_expect_true (!dec->stringref))	824	if (ecb_expect_true (!dec->stringref))
662	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	826	{
664	I32 len = decode_uint (dec);	827	STRLEN len = decode_uint (dec);
665	char *key = (char *)dec->cur;	828	char *key = (char *)dec->cur;
666		829
		830	WANT (len);
667	dec->cur += len;	831	dec->cur += len;
668		832
669	if (ecb_expect_false (dec->stringref))
670	av_push (dec->stringref, newSVpvn (key, len));
671
672	hv_store (hv, key, len, decode_sv (dec), 0);	833	hv_store (hv, key, len, decode_sv (dec), 0);
673		834
674	return;	835	return;
675	}	836	}
676	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	838	{
678	I32 len = decode_uint (dec);	839	STRLEN len = decode_uint (dec);
679	char *key = (char *)dec->cur;	840	char *key = (char *)dec->cur;
680		841
		842	WANT (len);
681	dec->cur += len;	843	dec->cur += len;
682		844
683	if (ecb_expect_false (dec->stringref))	845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
685		848
686	hv_store (hv, key, -len, decode_sv (dec), 0);	849	hv_store (hv, key, -len, decode_sv (dec), 0);
687		850
688	return;	851	return;
689	}	852	}
690		853
691	SV *k = decode_sv (dec);	854	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	855	SV *v = decode_sv (dec);
693		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
694	hv_store_ent (hv, k, v, 0);	885	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	886	SvREFCNT_dec (k);
		887
		888	fail:
		889	;
696	}	890	}
697		891
698	static SV *	892	static SV *
699	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
700	{	894	{
701	HV *hv = newHV ();	895	HV *hv = newHV ();
702		896
703	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
704		898
705	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
706	{	900	{
707	++dec->cur;	901	++dec->cur;
708		902
709	for (;;)	903	for (;;)
710	{	904	{
711	WANT (1);	905	WANT (1);
712		906
713	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
714	{	908	{
715	++dec->cur;	909	++dec->cur;
716	break;	910	break;
717	}	911	}
718		912
719	decode_he (dec, hv);	913	decode_he (dec, hv);
720	}	914	}
721	}	915	}
722	else	916	else
723	{	917	{
724	int pairs = decode_uint (dec);	918	UV pairs = decode_uint (dec);
		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
725		921
726	while (pairs--)	922	while (pairs--)
727	decode_he (dec, hv);	923	decode_he (dec, hv);
728	}	924	}
729		925
…		…
739	static SV *	935	static SV *
740	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
741	{	937	{
742	SV *sv = 0;	938	SV *sv = 0;
743		939
744	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
745	{	941	{
		942	// indefinite length strings
746	++dec->cur;	943	++dec->cur;
747		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
748	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
749		948
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	949	for (;;)
752	{	950	{
753	WANT (1);	951	WANT (1);
754		952
755	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
756	{	955	{
757	++dec->cur;	956	++dec->cur;
758	break;	957	break;
759	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		961
761	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
762	}	967	}
763	}	968	}
764	else	969	else
765	{	970	{
766	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
767		972
768	WANT (len);	973	WANT (len);
769	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
770	dec->cur += len;	975	dec->cur += len;
		976
		977	if (ecb_expect_false (dec->stringref)
		978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
771	}	980	}
772		981
773	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
774	SvUTF8_on (sv);	988	SvUTF8_on (sv);
775		989	}
776	if (ecb_expect_false (dec->stringref)
777	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
778	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
779		990
780	return sv;	991	return sv;
781		992
782	fail:	993	fail:
783	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	1013	sv = newRV_noinc (decode_sv (dec));
803	break;	1014	break;
804		1015
805	case CBOR_TAG_STRINGREF_NAMESPACE:	1016	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	1020	ENTER;
808		1021
809	SAVESPTR (dec->stringref);	1022	SAVESPTR (dec->stringref);
810	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
811		1024
812	sv = decode_sv (dec);	1025	sv = decode_sv (dec);
813		1026
814	FREETMPS; LEAVE;	1027	LEAVE;
815	}	1028	}
816	break;	1029	break;
817		1030
818	case CBOR_TAG_STRINGREF:	1031	case CBOR_TAG_STRINGREF:
819	{	1032	{
820	if ((*dec->cur >> 5) != 0)	1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		1035
823	UV idx = decode_uint (dec);	1036	UV idx = decode_uint (dec);
824		1037
825	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	1045	case CBOR_TAG_VALUE_SHAREABLE:
833	{	1046	{
834	if (ecb_expect_false (!dec->shareable))	1047	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
836		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
837	sv = newSV (0);	1052	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		1054
840	SV *osv = decode_sv (dec);	1055	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	1056	sv_setsv (sv, osv);
842	SvREFCNT_dec_NN (osv);	1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
843	}	1066	}
844	break;	1067	break;
845		1068
846	case CBOR_TAG_VALUE_SHAREDREF:	1069	case CBOR_TAG_VALUE_SHAREDREF:
847	{	1070	{
848	if ((*dec->cur >> 5) != 0)	1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1073
851	UV idx = decode_uint (dec);	1074	UV idx = decode_uint (dec);
852		1075
853	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1078
856	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
857	}	1083	}
858	break;	1084	break;
859		1085
860	case CBOR_TAG_PERL_OBJECT:	1086	case CBOR_TAG_PERL_OBJECT:
861	{	1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
862	sv = decode_sv (dec);	1091	sv = decode_sv (dec);
863		1092
864	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
865	ERR ("corrupted CBOR data (non-array perl object)");	1094	ERR ("corrupted CBOR data (non-array perl object)");
866		1095
…		…
876	if (!method)	1105	if (!method)
877	ERR ("cannot decode perl-object (package does not have a THAW method)");	1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
878		1107
879	dSP;	1108	dSP;
880		1109
881	ENTER; SAVETMPS; PUSHMARK (SP);	1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1112	EXTEND (SP, len + 1);
883	// we re-bless the reference to get overload and other niceties right	1113	// we re-bless the reference to get overload and other niceties right
884	PUSHs (*av_fetch (av, 0, 1));	1114	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1115	PUSHs (sv_cbor);
886		1116
…		…
894	SPAGAIN;	1124	SPAGAIN;
895		1125
896	if (SvTRUE (ERRSV))	1126	if (SvTRUE (ERRSV))
897	{	1127	{
898	FREETMPS; LEAVE;	1128	FREETMPS; LEAVE;
899	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1129	ERR_ERRSV;
900	}	1130	}
901		1131
902	SvREFCNT_dec (sv);	1132	SvREFCNT_dec (sv);
903	sv = SvREFCNT_inc (POPs);	1133	sv = SvREFCNT_inc (POPs);
904		1134
…		…
907	FREETMPS; LEAVE;	1137	FREETMPS; LEAVE;
908	}	1138	}
909	break;	1139	break;
910		1140
911	default:	1141	default:
		1142	filter:
912	{	1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
913	sv = decode_sv (dec);	1146	sv = decode_sv (dec);
914		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
915	AV *av = newAV ();	1175	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
917	av_push (av, sv);	1177	av_push (av, sv);
918		1178
919	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
920	? cbor_tagged_stash	1180	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
924	}	1188	}
925	break;	1189	break;
926	}	1190	}
927		1191
928	return sv;	1192	return sv;
…		…
935	static SV *	1199	static SV *
936	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
937	{	1201	{
938	WANT (1);	1202	WANT (1);
939		1203
940	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1205	{
942	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1213
950	case 4: // array	1214	case MAJOR_MISC >> MAJOR_SHIFT:
951	return decode_av (dec);
952	case 5: // map
953	return decode_hv (dec);
954	case 6: // tag
955	return decode_tagged (dec);
956	case 7: // misc
957	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
958	{	1216	{
959	case 20:	1217	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1218	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1219	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1220	#endif
963	return newSVsv (types_false);	1221	return newSVsv (types_false);
964	case 21:	1222	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1223	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1224	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1225	#endif
968	return newSVsv (types_true);	1226	return newSVsv (types_true);
969	case 22:	1227	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
971	case 23:	1229	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1230	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1231	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1232	#endif
975	return newSVsv (types_error);	1233	return newSVsv (types_error);
976		1234
977	case 25:	1235	case MISC_FLOAT16:
978	{	1236	{
979	WANT (2);	1237	WANT (2);
980		1238
981	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
982	dec->cur += 2;	1240	dec->cur += 2;
983		1241
984	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
985	}	1243	}
986		1244
987	case 26:	1245	case MISC_FLOAT32:
988	{	1246	{
989	uint32_t fp;	1247	uint32_t fp;
990	WANT (4);	1248	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1250	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
996		1254
997	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
998	}	1256	}
999		1257
1000	case 27:	1258	case MISC_FLOAT64:
1001	{	1259	{
1002	uint64_t fp;	1260	uint64_t fp;
1003	WANT (8);	1261	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1263	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
1009		1267
1010	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1269	}
1012		1270
1013	// 0..19 unassigned	1271	// 0..19 unassigned simple
1014	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
1015	default:	1275	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1277	}
1018		1278
1019	break;	1279	break;
1020	}	1280	}
1021		1281
…		…
1024	}	1284	}
1025		1285
1026	static SV *	1286	static SV *
1027	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1028	{	1288	{
1029	dec_t dec = { };	1289	dec_t dec = { 0 };
1030	SV *sv;	1290	SV *sv;
1031	STRLEN len;	1291	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1292	char *data = SvPVbyte (string, len);
1033		1293
1034	if (len > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
1050		1310
1051	if (dec.err)	1311	if (dec.err)
1052	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
1053	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
1054	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1055	}	1330	}
1056		1331
1057	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
1058		1333
1059	return sv;	1334	return sv;
1060	}	1335	}
1061		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR *self, SV *cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) | *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
1062	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1462	// XS interface functions
1064		1463
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1465
…		…
1074		1473
1075	types_true = get_bool ("Types::Serialiser::true" );	1474	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1475	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1476	types_error = get_bool ("Types::Serialiser::error");
1078		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
1079	sv_cbor = newSVpv ("CBOR", 0);	1480	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1484	}
1082		1485
1083	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
1084		1487
1085	void CLONE (...)	1488	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1508	ALIAS:
1106	shrink = F_SHRINK	1509	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1511	allow_sharing = F_ALLOW_SHARING
		1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
1109	dedup_strings = F_DEDUP_STRINGS	1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
1110	PPCODE:	1518	PPCODE:
1111	{	1519	{
1112	if (enable)	1520	if (enable)
1113	self->flags |= ix;	1521	self->flags |= ix;
1114	else	1522	else
…		…
1120	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
1121	ALIAS:	1529	ALIAS:
1122	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
1124	get_allow_sharing = F_ALLOW_SHARING	1532	get_allow_sharing = F_ALLOW_SHARING
		1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
1125	get_dedup_strings = F_DEDUP_STRINGS	1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
1126	PPCODE:	1539	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
1128		1541
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1543	PPCODE:
…		…
1143	XPUSHs (ST (0));	1556	XPUSHs (ST (0));
1144		1557
1145	int get_max_size (CBOR *self)	1558	int get_max_size (CBOR *self)
1146	CODE:	1559	CODE:
1147	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
		1561	OUTPUT:
		1562	RETVAL
		1563
		1564	void filter (CBOR *self, SV *filter = 0)
		1565	PPCODE:
		1566	SvREFCNT_dec (self->filter);
		1567	self->filter = filter ? newSVsv (filter) : filter;
		1568	XPUSHs (ST (0));
		1569
		1570	SV *get_filter (CBOR *self)
		1571	CODE:
		1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1573	OUTPUT:
1149	RETVAL	1574	RETVAL
1150		1575
1151	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
1152	PPCODE:	1577	PPCODE:
…		…
1167	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
1168	PUSHs (sv);	1593	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1595	}
1171		1596
		1597	void incr_parse (CBOR *self, SV *cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
		1648
		1649	void DESTROY (CBOR *self)
		1650	PPCODE:
		1651	cbor_free (self);
		1652
1172	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
1173		1654
1174	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1659	PPCODE:
1176	{	1660	{
1177	CBOR cbor;	1661	CBOR cbor;
1178	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1665	XPUSHs (scalar);
1181	}	1666	}
1182		1667
1183	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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