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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.51 by root, Sun Apr 24 13:15:19 2016 UTC

…		…
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		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
16		107
17	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
18		109
19	#define SB do {	110	#define SB do {
20	#define SE } while (0)	111	#define SE } while (0)
…		…
31	#else	122	#else
32	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
34	#endif	125	#endif
35		126
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		129
39	typedef struct {	130	typedef struct {
40	U32 flags;	131	U32 flags;
41	U32 max_depth;	132	U32 max_depth;
42	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
43		135
44	SV *cb_object;	136	// for the incremental parser
45	HV *cb_sk_object;	137	STRLEN incr_pos; // the current offset into the text
		138	STRLEN incr_need; // minimum bytes needed to decode
		139	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	140	} CBOR;
47		141
48	ecb_inline void	142	ecb_inline void
49	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
50	{	144	{
51	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	146	cbor->max_depth = 512;
		147	}
		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
53	}	154	}
54		155
55	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	157	// utility functions
57		158
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	181	#endif
81	}	182	}
82	}	183	}
83		184
84	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
85	// fp hell	186	ecb_inline int
86		187	minimum_string_length (UV idx)
87	//TODO	188	{
		189	return idx > 23
		190	? idx > 0xffU
		191	? idx > 0xffffU
		192	? idx > 0xffffffffU
		193	? 11
		194	: 7
		195	: 5
		196	: 4
		197	: 3;
		198	}
88		199
89	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
90	// encoder	201	// encoder
91		202
92	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
97	SV *sv; // result scalar	208	SV *sv; // result scalar
98	CBOR cbor;	209	CBOR cbor;
99	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
100	} enc_t;	215	} enc_t;
101		216
102	ecb_inline void	217	ecb_inline void
103	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
104	{	219	{
…		…
121	static void	236	static void
122	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
123	{	238	{
124	need (enc, 9);	239	need (enc, 9);
125		240
126	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
128	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
129	{	244	{
130	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	246	*enc->cur++ = len;
132	}	247	}
133	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
134	{	249	{
135	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	252	*enc->cur++ = len;
138	}	253	}
139	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
140	{	255	{
141	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	260	*enc->cur++ = len;
146	}	261	}
147	else	262	else
148	{	263	{
149	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	272	*enc->cur++ = len;
158	}	273	}
159	}	274	}
160		275
161	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	ecb_inline void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	284	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	if (ecb_expect_false (enc->cbor.flags & F_UTF8_STRINGS))
		286	if (!utf8)
		287	{
		288	SV *sv = sv_newmortal ();
		289	char *s; STRLEN l;
		290
		291	sv_setpvn (sv, str, len);
		292
		293	s = SvPVutf8 (sv, l);
		294	encode_str (enc, 1, s, l);
		295	return;
		296	}
		297
		298	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	299	need (enc, len);
166	memcpy (enc->cur, str, len);	300	memcpy (enc->cur, str, len);
167	enc->cur += len;	301	enc->cur += len;
168	}	302	}
169		303
		304	static void
		305	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		308	{
		309	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		310
		311	if (SvOK (*svp))
		312	{
		313	// already registered, use stringref
		314	encode_tag (enc, CBOR_TAG_STRINGREF);
		315	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		316	return;
		317	}
		318	else if (len >= minimum_string_length (enc->stringref_idx))
		319	{
		320	// register only
		321	sv_setuv (*svp, enc->stringref_idx);
		322	++enc->stringref_idx;
		323	}
		324	}
		325
		326	encode_str (enc, utf8, str, len);
		327	}
		328
170	static void encode_sv (enc_t *enc, SV *sv);	329	static void encode_sv (enc_t *enc, SV *sv);
171		330
172	static void	331	static void
173	encode_av (enc_t *enc, AV *av)	332	encode_av (enc_t *enc, AV *av)
174	{	333	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	336	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	337	croak (ERR_NESTING_EXCEEDED);
179		338
180	++enc->depth;	339	++enc->depth;
181		340
182	encode_uint (enc, 0x80, len + 1);	341	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		342
		343	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	344	for (i = 0; i <= len; ++i)
185	{	345	{
186	SV **svp = av_fetch (av, i, 0);	346	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	347	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	348	}
		349	else
		350	for (i = 0; i <= len; ++i)
		351	{
		352	SV *sv = AvARRAY (av)[i];
		353	encode_sv (enc, sv ? sv : &PL_sv_undef);
		354	}
189		355
190	--enc->depth;	356	--enc->depth;
191	}	357	}
192		358
193	static void	359	static void
…		…
202		368
203	int pairs = hv_iterinit (hv);	369	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	370	int mg = SvMAGICAL (hv);
205		371
206	if (mg)	372	if (mg)
207	encode_ch (enc, 0xa0 | 31);	373	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	374	else
209	encode_uint (enc, 0xa0, pairs);	375	encode_uint (enc, MAJOR_MAP, pairs);
210		376
211	while ((he = hv_iternext (hv)))	377	while ((he = hv_iternext (hv)))
212	{	378	{
213	if (HeKLEN (he) == HEf_SVKEY)	379	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	380	encode_sv (enc, HeSVKEY (he));
215	else	381	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	382	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		383
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	384	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	385	}
220		386
221	if (mg)	387	if (mg)
222	encode_ch (enc, 0xe0 | 31);	388	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		389
224	--enc->depth;	390	--enc->depth;
225	}	391	}
226		392
227	// encode objects, arrays and special \0=false and \1=true values.	393	// encode objects, arrays and special \0=false and \1=true values.
228	static void	394	static void
229	encode_rv (enc_t *enc, SV *sv)	395	encode_rv (enc_t *enc, SV *sv)
230	{	396	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	397	SvGETMAGIC (sv);
		398
234	svt = SvTYPE (sv);	399	svtype svt = SvTYPE (sv);
235		400
236	if (ecb_expect_false (SvOBJECT (sv)))	401	if (ecb_expect_false (SvOBJECT (sv)))
237	{	402	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	403	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	404	? types_boolean_stash
		405	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		406	HV *error_stash = !CBOR_SLOW || types_error_stash
		407	? types_error_stash
		408	: gv_stashpv ("Types::Serialiser::Error", 1);
		409	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		410	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	411	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		412
242	if (SvSTASH (sv) == stash)	413	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	414
		415	if (stash == boolean_stash)
		416	{
		417	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		418	return;
		419	}
		420	else if (stash == error_stash)
		421	{
		422	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		423	return;
		424	}
		425	else if (stash == tagged_stash)
		426	{
		427	if (svt != SVt_PVAV)
		428	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		429
		430	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		431	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		432
		433	return;
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvREFCNT (sv) > 1)
		438	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		439	{
		440	if (!enc->shareable)
		441	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		442
		443	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		444
		445	if (SvOK (*svp))
		446	{
		447	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		448	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		449	return;
		450	}
244	else	451	else
245	{	452	{
246	#if 0 //TODO	453	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	454	++enc->shareable_idx;
		455	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		456	}
		457	}
		458
		459	if (ecb_expect_false (SvOBJECT (sv)))
		460	{
		461	HV *stash = SvSTASH (sv);
		462	GV *method;
		463
		464	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	465	{
		466	dSP;
		467
		468	ENTER; SAVETMPS;
		469	PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	470	// we re-bless the reference to get overload and other niceties right
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	471	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		472
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	473	PUTBACK;
		474	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	475	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	476	SPAGAIN;
263		477
264	// catch this surprisingly common error	478	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	479	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	480	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		481
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	482	encode_sv (enc, POPs);
272		483
		484	PUTBACK;
		485
273	FREETMPS; LEAVE;	486	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	487	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	488	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	489	{
		490	dSP;
		491
		492	ENTER; SAVETMPS;
		493	SAVESTACK_POS ();
		494	PUSHMARK (SP);
		495	EXTEND (SP, 2);
		496	// we re-bless the reference to get overload and other niceties right
		497	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		498	PUSHs (sv_cbor);
		499
		500	PUTBACK;
		501	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		502	SPAGAIN;
		503
		504	// catch this surprisingly common error
		505	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		506	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		507
		508	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		509	encode_uint (enc, MAJOR_ARRAY, count + 1);
		510	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		511
		512	while (count)
		513	encode_sv (enc, SP[1 - count--]);
		514
		515	PUTBACK;
		516
		517	FREETMPS; LEAVE;
		518	}
283	else	519	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	520	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	521	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	522	}
289	else if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	526	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	527	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	528	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	529	encode_tag (enc, CBOR_TAG_INDIRECTION);
		530	encode_sv (enc, sv);
		531	}
313	}	532	}
314		533
315	static void	534	static void
316	encode_nv (enc_t *enc, SV *sv)	535	encode_nv (enc_t *enc, SV *sv)
317	{	536	{
318	double nv = SvNVX (sv);	537	double nv = SvNVX (sv);
319		538
320	need (enc, 9);	539	need (enc, 9);
321		540
322	if (ecb_expect_false (nv == (U32)nv))	541	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	542	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	543	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	544	else if (ecb_expect_false (nv == (float)nv))
326	{	545	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	546	uint32_t fp = ecb_float_to_binary32 (nv);
328		547
329	*enc->cur++ = 0xe0 | 26;	548	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		549
331	if (!ecb_big_endian ())	550	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	551	fp = ecb_bswap32 (fp);
333		552
334	memcpy (enc->cur, &fp, 4);	553	memcpy (enc->cur, &fp, 4);
…		…
336	}	555	}
337	else	556	else
338	{	557	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	558	uint64_t fp = ecb_double_to_binary64 (nv);
340		559
341	*enc->cur++ = 0xe0 | 27;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		561
343	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	563	fp = ecb_bswap64 (fp);
345		564
346	memcpy (enc->cur, &fp, 8);	565	memcpy (enc->cur, &fp, 8);
…		…
355		574
356	if (SvPOKp (sv))	575	if (SvPOKp (sv))
357	{	576	{
358	STRLEN len;	577	STRLEN len;
359	char *str = SvPV (sv, len);	578	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	579	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	580	}
362	else if (SvNOKp (sv))	581	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	582	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	583	else if (SvIOKp (sv))
365	{	584	{
366	if (SvIsUV (sv))	585	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	586	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	587	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	588	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	589	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	590	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	591	}
373	else if (SvROK (sv))	592	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	593	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	594	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	595	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	596	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	597	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	598	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	599	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	600	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	601	}
383		602
384	static SV *	603	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	604	encode_cbor (SV *scalar, CBOR *cbor)
386	{	605	{
387	enc_t enc;	606	enc_t enc = { 0 };
388		607
389	enc.cbor = *cbor;	608	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	609	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	610	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	611	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		612
395	SvPOK_only (enc.sv);	613	SvPOK_only (enc.sv);
		614
		615	if (cbor->flags & F_PACK_STRINGS)
		616	{
		617	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		618	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		619	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		620	}
		621
396	encode_sv (&enc, scalar);	622	encode_sv (&enc, scalar);
397		623
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	624	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	625	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		626
…		…
414	U8 *end; // end of input string	640	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	641	const char *err; // parse error, if != 0
416	CBOR cbor;	642	CBOR cbor;
417	U32 depth; // recursion depth	643	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	644	U32 maxdepth; // recursion depth limit
		645	AV *shareable;
		646	AV *stringref;
		647	SV *decode_tagged;
419	} dec_t;	648	} dec_t;
420		649
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	650	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		651
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	652	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
426	#define DEC_DEC_DEPTH --dec->depth	655	#define DEC_DEC_DEPTH --dec->depth
427		656
428	static UV	657	static UV
429	decode_uint (dec_t *dec)	658	decode_uint (dec_t *dec)
430	{	659	{
431	switch (*dec->cur & 31)	660	U8 m = *dec->cur & MINOR_MASK;
432	{	661	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		662
438	case 24:	663	if (ecb_expect_true (m < LENGTH_EXT1))
		664	return m;
		665	else if (ecb_expect_true (m == LENGTH_EXT1))
		666	{
439	WANT (2);	667	WANT (1);
440	dec->cur += 2;	668	dec->cur += 1;
441	return dec->cur[-1];	669	return dec->cur[-1];
442		670	}
443	case 25:	671	else if (ecb_expect_true (m == LENGTH_EXT2))
		672	{
444	WANT (3);	673	WANT (2);
445	dec->cur += 3;	674	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	675	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	676	| ((UV)dec->cur[-1]);
448		677	}
449	case 26:	678	else if (ecb_expect_true (m == LENGTH_EXT4))
		679	{
450	WANT (5);	680	WANT (4);
451	dec->cur += 5;	681	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	682	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	683	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	684	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	685	| ((UV)dec->cur[-1]);
456		686	}
457	case 27:	687	else if (ecb_expect_true (m == LENGTH_EXT8))
		688	{
458	WANT (9);	689	WANT (8);
459	dec->cur += 9;	690	dec->cur += 8;
		691
		692	return
		693	#if UVSIZE < 8
		694	0
		695	#else
460	return (((UV)dec->cur[-8]) << 56)	696	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	697	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	698	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	699	| (((UV)dec->cur[-5]) << 32)
		700	#endif
464	| (((UV)dec->cur[-4]) << 24)	701	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	702	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	703	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	704	| ((UV)dec->cur[-1]);
468		705	}
469	default:	706	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	707	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		708
473	fail:	709	fail:
474	return 0;	710	return 0;
475	}	711	}
476		712
…		…
481	{	717	{
482	AV *av = newAV ();	718	AV *av = newAV ();
483		719
484	DEC_INC_DEPTH;	720	DEC_INC_DEPTH;
485		721
486	if ((*dec->cur & 31) == 31)	722	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	723	{
488	++dec->cur;	724	++dec->cur;
489		725
490	for (;;)	726	for (;;)
491	{	727	{
492	WANT (1);	728	WANT (1);
493		729
494	if (*dec->cur == (0xe0 | 31))	730	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	731	{
496	++dec->cur;	732	++dec->cur;
497	break;	733	break;
498	}	734	}
499		735
…		…
502	}	738	}
503	else	739	else
504	{	740	{
505	int i, len = decode_uint (dec);	741	int i, len = decode_uint (dec);
506		742
		743	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	744	av_fill (av, len - 1);
508		745
509	for (i = 0; i < len; ++i)	746	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	747	AvARRAY (av)[i] = decode_sv (dec);
511	}	748	}
…		…
517	SvREFCNT_dec (av);	754	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	755	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	756	return &PL_sv_undef;
520	}	757	}
521		758
		759	static void
		760	decode_he (dec_t *dec, HV *hv)
		761	{
		762	// for speed reasons, we specialcase single-string
		763	// byte or utf-8 strings as keys, but only when !stringref
		764
		765	if (ecb_expect_true (!dec->stringref))
		766	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		767	{
		768	I32 len = decode_uint (dec);
		769	char *key = (char *)dec->cur;
		770
		771	WANT (len);
		772	dec->cur += len;
		773
		774	hv_store (hv, key, len, decode_sv (dec), 0);
		775
		776	return;
		777	}
		778	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		779	{
		780	I32 len = decode_uint (dec);
		781	char *key = (char *)dec->cur;
		782
		783	WANT (len);
		784	dec->cur += len;
		785
		786	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		787	if (!is_utf8_string (key, len))
		788	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		789
		790	hv_store (hv, key, -len, decode_sv (dec), 0);
		791
		792	return;
		793	}
		794
		795	SV *k = decode_sv (dec);
		796	SV *v = decode_sv (dec);
		797
		798	hv_store_ent (hv, k, v, 0);
		799	SvREFCNT_dec (k);
		800
		801	fail:
		802	;
		803	}
		804
522	static SV *	805	static SV *
523	decode_hv (dec_t *dec)	806	decode_hv (dec_t *dec)
524	{	807	{
525	HV *hv = newHV ();	808	HV *hv = newHV ();
526		809
527	DEC_INC_DEPTH;	810	DEC_INC_DEPTH;
528		811
529	if ((*dec->cur & 31) == 31)	812	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	813	{
531	++dec->cur;	814	++dec->cur;
532		815
533	for (;;)	816	for (;;)
534	{	817	{
535	WANT (1);	818	WANT (1);
536		819
537	if (*dec->cur == (0xe0 | 31))	820	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	821	{
539	++dec->cur;	822	++dec->cur;
540	break;	823	break;
541	}	824	}
542		825
543	SV *k = decode_sv (dec);	826	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	827	}
548	}	828	}
549	else	829	else
550	{	830	{
551	int len = decode_uint (dec);	831	int pairs = decode_uint (dec);
552		832
553	while (len--)	833	while (pairs--)
554	{	834	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	835	}
561		836
562	DEC_DEC_DEPTH;	837	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	838	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		839
720	fail:	840	fail:
721	SvREFCNT_dec (hv);	841	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	842	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	843	return &PL_sv_undef;
724	}	844	}
725		845
726	static SV *	846	static SV *
727	decode_str (dec_t *dec, int utf8)	847	decode_str (dec_t *dec, int utf8)
728	{	848	{
729	SV *sv;	849	SV *sv = 0;
730		850
731	if ((*dec->cur & 31) == 31)	851	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	852	{
		853	// indefinite length strings
733	++dec->cur;	854	++dec->cur;
734		855
		856	U8 major = *dec->cur & MAJOR_MISC;
		857
735	sv = newSVpvn ("", 0);	858	sv = newSVpvn ("", 0);
736		859
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	860	for (;;)
739	{	861	{
740	WANT (1);	862	WANT (1);
741		863
742	if (*dec->cur == (0xe0 | 31))	864	if ((*dec->cur - major) > LENGTH_EXT8)
		865	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	866	{
744	++dec->cur;	867	++dec->cur;
745	break;	868	break;
746	}	869	}
		870	else
		871	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		872
748	SV *sv2 = decode_sv (dec);	873	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	874
		875	WANT (len);
		876	sv_catpvn (sv, dec->cur, len);
		877	dec->cur += len;
750	}	878	}
751	}	879	}
752	else	880	else
753	{	881	{
754	STRLEN len = decode_uint (dec);	882	STRLEN len = decode_uint (dec);
755		883
756	WANT (len);	884	WANT (len);
757	sv = newSVpvn (dec->cur, len);	885	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	886	dec->cur += len;
		887
		888	if (ecb_expect_false (dec->stringref)
		889	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		890	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	891	}
760		892
761	if (utf8)	893	if (utf8)
		894	{
		895	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		896	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		897	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		898
762	SvUTF8_on (sv);	899	SvUTF8_on (sv);
		900	}
763		901
764	return sv;	902	return sv;
765		903
766	fail:	904	fail:
		905	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	906	return &PL_sv_undef;
768	}	907	}
769		908
770	static SV *	909	static SV *
771	decode_tagged (dec_t *dec)	910	decode_tagged (dec_t *dec)
772	{	911	{
		912	SV *sv = 0;
773	UV tag = decode_uint (dec);	913	UV tag = decode_uint (dec);
		914
		915	WANT (1);
		916
		917	switch (tag)
		918	{
		919	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	920	sv = decode_sv (dec);
		921	break;
775		922
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	923	case CBOR_TAG_INDIRECTION:
		924	sv = newRV_noinc (decode_sv (dec));
		925	break;
		926
		927	case CBOR_TAG_STRINGREF_NAMESPACE:
		928	{
		929	ENTER; SAVETMPS;
		930
		931	SAVESPTR (dec->stringref);
		932	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		933
		934	sv = decode_sv (dec);
		935
		936	FREETMPS; LEAVE;
		937	}
		938	break;
		939
		940	case CBOR_TAG_STRINGREF:
		941	{
		942	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		943	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		944
		945	UV idx = decode_uint (dec);
		946
		947	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		948	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		949
		950	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		951	}
		952	break;
		953
		954	case CBOR_TAG_VALUE_SHAREABLE:
		955	{
		956	if (ecb_expect_false (!dec->shareable))
		957	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		958
		959	if (dec->cbor.flags & F_ALLOW_CYCLES)
		960	{
		961	sv = newSV (0);
		962	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		963
		964	SV *osv = decode_sv (dec);
		965	sv_setsv (sv, osv);
		966	SvREFCNT_dec_NN (osv);
		967	}
		968	else
		969	{
		970	av_push (dec->shareable, &PL_sv_undef);
		971	int idx = AvFILLp (dec->shareable);
		972	sv = decode_sv (dec);
		973	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		974	}
		975	}
		976	break;
		977
		978	case CBOR_TAG_VALUE_SHAREDREF:
		979	{
		980	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		981	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		982
		983	UV idx = decode_uint (dec);
		984
		985	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		986	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		987
		988	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		989
		990	if (sv == &PL_sv_undef)
		991	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		992	}
		993	break;
		994
		995	case CBOR_TAG_PERL_OBJECT:
		996	{
		997	sv = decode_sv (dec);
		998
		999	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1000	ERR ("corrupted CBOR data (non-array perl object)");
		1001
		1002	AV *av = (AV *)SvRV (sv);
		1003	int len = av_len (av) + 1;
		1004	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1005
		1006	if (!stash)
		1007	ERR ("cannot decode perl-object (package does not exist)");
		1008
		1009	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1010
		1011	if (!method)
		1012	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1013
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, len + 1);
		1019	// we re-bless the reference to get overload and other niceties right
		1020	PUSHs (*av_fetch (av, 0, 1));
		1021	PUSHs (sv_cbor);
		1022
		1023	int i;
		1024
		1025	for (i = 1; i < len; ++i)
		1026	PUSHs (*av_fetch (av, i, 1));
		1027
		1028	PUTBACK;
		1029	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1030	SPAGAIN;
		1031
		1032	if (SvTRUE (ERRSV))
		1033	{
		1034	FREETMPS; LEAVE;
		1035	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1036	}
		1037
		1038	SvREFCNT_dec (sv);
		1039	sv = SvREFCNT_inc (POPs);
		1040
		1041	PUTBACK;
		1042
		1043	FREETMPS; LEAVE;
		1044	}
		1045	break;
		1046
		1047	default:
		1048	{
		1049	sv = decode_sv (dec);
		1050
		1051	dSP;
		1052	ENTER; SAVETMPS;
		1053	SAVESTACK_POS ();
		1054	PUSHMARK (SP);
		1055	EXTEND (SP, 2);
		1056	PUSHs (newSVuv (tag));
		1057	PUSHs (sv);
		1058
		1059	PUTBACK;
		1060	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1061	SPAGAIN;
		1062
		1063	if (SvTRUE (ERRSV))
		1064	{
		1065	FREETMPS; LEAVE;
		1066	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1067	}
		1068
		1069	if (count)
		1070	{
		1071	SvREFCNT_dec (sv);
		1072	sv = SvREFCNT_inc (POPs);
		1073	}
		1074	else
		1075	{
		1076	AV *av = newAV ();
		1077	av_push (av, newSVuv (tag));
		1078	av_push (av, sv);
		1079
		1080	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1081	? cbor_tagged_stash
		1082	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1083	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1084	}
		1085
		1086	PUTBACK;
		1087
		1088	FREETMPS; LEAVE;
		1089	}
		1090	break;
		1091	}
		1092
777	return sv;	1093	return sv;
778		1094
779	AV *av = newAV ();	1095	fail:
780	av_push (av, newSVuv (tag));	1096	SvREFCNT_dec (sv);
781	av_push (av, sv);	1097	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1098	}
784		1099
785	static SV *	1100	static SV *
786	decode_sv (dec_t *dec)	1101	decode_sv (dec_t *dec)
787	{	1102	{
788	WANT (1);	1103	WANT (1);
789		1104
790	switch (*dec->cur >> 5)	1105	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1106	{
792	case 0: // unsigned int	1107	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1108	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1109	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1110	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1111	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1112	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1113	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1114
800	return decode_str (dec, 1);	1115	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1116	switch (*dec->cur++ & MINOR_MASK)
809	{	1117	{
810	case 20:	1118	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1119	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1120	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1121	#endif
814	return newSVsv (cbor_false);	1122	return newSVsv (types_false);
815	case 21:	1123	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1124	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1125	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1126	#endif
819	return newSVsv (cbor_true);	1127	return newSVsv (types_true);
820	case 22:	1128	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1129	return newSVsv (&PL_sv_undef);
		1130	case SIMPLE_UNDEF:
		1131	#if CBOR_SLOW
		1132	types_error = get_bool ("Types::Serialiser::error");
		1133	#endif
		1134	return newSVsv (types_error);
822		1135
823	case 25:	1136	case MISC_FLOAT16:
824	{	1137	{
825	WANT (2);	1138	WANT (2);
826		1139
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1140	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1141	dec->cur += 2;
829		1142
830	return newSVnv (ecb_binary16_to_float (fp));	1143	return newSVnv (ecb_binary16_to_float (fp));
831	}	1144	}
832		1145
833	case 26:	1146	case MISC_FLOAT32:
834	{	1147	{
835	uint32_t fp;	1148	uint32_t fp;
836	WANT (4);	1149	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1150	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1151	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1154	fp = ecb_bswap32 (fp);
842		1155
843	return newSVnv (ecb_binary32_to_float (fp));	1156	return newSVnv (ecb_binary32_to_float (fp));
844	}	1157	}
845		1158
846	case 27:	1159	case MISC_FLOAT64:
847	{	1160	{
848	uint64_t fp;	1161	uint64_t fp;
849	WANT (8);	1162	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1163	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1164	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1167	fp = ecb_bswap64 (fp);
855		1168
856	return newSVnv (ecb_binary64_to_double (fp));	1169	return newSVnv (ecb_binary64_to_double (fp));
857	}	1170	}
858		1171
859	// 0..19 unassigned	1172	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1173	// 24 reserved + unassigned simple (reserved values are not encodable)
		1174	// 28-30 unassigned misc
		1175	// 31 break code
861	default:	1176	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1177	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1178	}
864		1179
865	break;	1180	break;
866	}	1181	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1182
924	fail:	1183	fail:
925	return &PL_sv_undef;	1184	return &PL_sv_undef;
926	}	1185	}
927		1186
928	static SV *	1187	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1188	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1189	{
931	dec_t dec;	1190	dec_t dec = { 0 };
932	SV *sv;	1191	SV *sv;
		1192	STRLEN len;
		1193	char *data = SvPVbyte (string, len);
933		1194
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1195	if (len > cbor->max_size && cbor->max_size)
963	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1196	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1197	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1198
969	dec.cbor = *cbor;	1199	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1200	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1201	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1202
978	sv = decode_sv (&dec);	1203	sv = decode_sv (&dec);
979		1204
980	if (offset_return)	1205	if (offset_return)
981	*offset_return = dec.cur;	1206	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1209	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1210	dec.err = "garbage after CBOR object";
986		1211
987	if (dec.err)	1212	if (dec.err)
988	{	1213	{
		1214	if (dec.shareable)
		1215	{
		1216	// need to break cyclic links, which whould all be in shareable
		1217	int i;
		1218	SV **svp;
		1219
		1220	for (i = av_len (dec.shareable) + 1; i--; )
		1221	if ((svp = av_fetch (dec.shareable, i, 0)))
		1222	sv_setsv (*svp, &PL_sv_undef);
		1223	}
		1224
989	SvREFCNT_dec (sv);	1225	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1226	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1227	}
992		1228
993	sv = sv_2mortal (sv);	1229	sv = sv_2mortal (sv);
994		1230
995	return sv;	1231	return sv;
996	}	1232	}
997		1233
		1234	/////////////////////////////////////////////////////////////////////////////
		1235	// incremental parser
		1236
		1237	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1238
		1239	// returns 0 for notyet, 1 for success or error
		1240	static int
		1241	incr_parse (CBOR *self, SV *cborstr)
		1242	{
		1243	STRLEN cur;
		1244	SvPV (cborstr, cur);
		1245
		1246	while (ecb_expect_true (self->incr_need <= cur))
		1247	{
		1248	// table of integer count bytes
		1249	static I8 incr_len[MINOR_MASK + 1] = {
		1250	0, 0, 0, 0, 0, 0, 0, 0,
		1251	0, 0, 0, 0, 0, 0, 0, 0,
		1252	0, 0, 0, 0, 0, 0, 0, 0,
		1253	1, 2, 4, 8,-1,-1,-1,-2
		1254	};
		1255
		1256	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1257	U8 m = *p & MINOR_MASK;
		1258	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1259	I8 ilen = incr_len[m];
		1260
		1261	self->incr_need = self->incr_pos + 1;
		1262
		1263	if (ecb_expect_false (ilen < 0))
		1264	{
		1265	if (m != MINOR_INDEF)
		1266	return 1; // error
		1267
		1268	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1269	{
		1270	if (count >= 0)
		1271	return 1; // error
		1272
		1273	count = 1;
		1274	}
		1275	else
		1276	{
		1277	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1278	count = -1;
		1279	}
		1280	}
		1281	else
		1282	{
		1283	self->incr_need += ilen;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	int major = *p >> MAJOR_SHIFT;
		1288
		1289	switch (major)
		1290	{
		1291	case MAJOR_TAG >> MAJOR_SHIFT:
		1292	++count; // tags merely prefix another value
		1293	break;
		1294
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1298	case MAJOR_MAP >> MAJOR_SHIFT:
		1299	{
		1300	UV len;
		1301
		1302	if (ecb_expect_false (ilen))
		1303	{
		1304	len = 0;
		1305
		1306	do {
		1307	len = (len << 8) | *++p;
		1308	} while (--ilen);
		1309	}
		1310	else
		1311	len = m;
		1312
		1313	switch (major)
		1314	{
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	self->incr_need += len;
		1318	if (ecb_expect_false (self->incr_need > cur))
		1319	return 0;
		1320
		1321	break;
		1322
		1323	case MAJOR_MAP >> MAJOR_SHIFT:
		1324	len <<= 1;
		1325	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1326	if (len)
		1327	{
		1328	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1329	count = len + 1;
		1330	}
		1331	break;
		1332	}
		1333	}
		1334	}
		1335	}
		1336
		1337	self->incr_pos = self->incr_need;
		1338
		1339	if (count > 0)
		1340	{
		1341	while (!--count)
		1342	{
		1343	if (!AvFILLp (self->incr_count))
		1344	return 1; // done
		1345
		1346	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1347	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1348	}
		1349
		1350	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1351	}
		1352	}
		1353
		1354	return 0;
		1355	}
		1356
		1357
998	/////////////////////////////////////////////////////////////////////////////	1358	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1359	// XS interface functions
1000		1360
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1361	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1362
1003	BOOT:	1363	BOOT:
1004	{	1364	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1365	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1366	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1367
1008	cbor_true = get_bool ("CBOR::XS::true");	1368	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1369	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1370
		1371	types_true = get_bool ("Types::Serialiser::true" );
		1372	types_false = get_bool ("Types::Serialiser::false");
		1373	types_error = get_bool ("Types::Serialiser::error");
		1374
		1375	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1376
		1377	sv_cbor = newSVpv ("CBOR", 0);
		1378	SvREADONLY_on (sv_cbor);
1010	}	1379	}
1011		1380
1012	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
1013		1382
1014	void CLONE (...)	1383	void CLONE (...)
1015	CODE:	1384	CODE:
1016	cbor_stash = 0;	1385	cbor_stash = 0;
		1386	cbor_tagged_stash = 0;
		1387	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1388	types_boolean_stash = 0;
1018		1389
1019	void new (char *klass)	1390	void new (char *klass)
1020	PPCODE:	1391	PPCODE:
1021	{	1392	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1393	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1401
1031	void shrink (CBOR *self, int enable = 1)	1402	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1403	ALIAS:
1033	shrink = F_SHRINK	1404	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1405	allow_unknown = F_ALLOW_UNKNOWN
		1406	allow_sharing = F_ALLOW_SHARING
		1407	allow_cycles = F_ALLOW_CYCLES
		1408	pack_strings = F_PACK_STRINGS
		1409	utf8_strings = F_UTF8_STRINGS
		1410	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1411	PPCODE:
1036	{	1412	{
1037	if (enable)	1413	if (enable)
1038	self->flags |= ix;	1414	self->flags |= ix;
1039	else	1415	else
…		…
1044		1420
1045	void get_shrink (CBOR *self)	1421	void get_shrink (CBOR *self)
1046	ALIAS:	1422	ALIAS:
1047	get_shrink = F_SHRINK	1423	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1424	get_allow_unknown = F_ALLOW_UNKNOWN
		1425	get_allow_sharing = F_ALLOW_SHARING
		1426	get_allow_cycles = F_ALLOW_CYCLES
		1427	get_pack_strings = F_PACK_STRINGS
		1428	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1429	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1430	XPUSHs (boolSV (self->flags & ix));
1051		1431
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1432	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1433	PPCODE:
…		…
1069	CODE:	1449	CODE:
1070	RETVAL = self->max_size;	1450	RETVAL = self->max_size;
1071	OUTPUT:	1451	OUTPUT:
1072	RETVAL	1452	RETVAL
1073		1453
1074	#if 0 //TODO	1454	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1455	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1456	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1457	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1458	XPUSHs (ST (0));
1083	}
1084		1459
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1460	SV *get_filter (CBOR *self)
1086	PPCODE:	1461	CODE:
1087	{	1462	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1463	OUTPUT:
1089	self->cb_sk_object = newHV ();	1464	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1465
1109	void encode (CBOR *self, SV *scalar)	1466	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1467	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1468	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1469	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1482	EXTEND (SP, 2);
1126	PUSHs (sv);	1483	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1484	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1485	}
1129		1486
		1487	void incr_parse (CBOR *self, SV *cborstr)
		1488	ALIAS:
		1489	incr_parse_multiple = 1
		1490	PPCODE:
		1491	{
		1492	if (SvUTF8 (cborstr))
		1493	sv_utf8_downgrade (cborstr, 0);
		1494
		1495	if (!self->incr_count)
		1496	{
		1497	self->incr_count = newAV ();
		1498	self->incr_pos = 0;
		1499	self->incr_need = 1;
		1500
		1501	av_push (self->incr_count, newSViv (1));
		1502	}
		1503
		1504	do
		1505	{
		1506	if (!incr_parse (self, cborstr))
		1507	{
		1508	if (self->incr_need > self->max_size && self->max_size)
		1509	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1510	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1511
		1512	break;
		1513	}
		1514
		1515	SV *sv;
		1516	char *offset;
		1517
		1518	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1519	XPUSHs (sv);
		1520
		1521	sv_chop (cborstr, offset);
		1522
		1523	av_clear (self->incr_count);
		1524	av_push (self->incr_count, newSViv (1));
		1525
		1526	self->incr_pos = 0;
		1527	self->incr_need = self->incr_pos + 1;
		1528	}
		1529	while (ix);
		1530	}
		1531
		1532	void incr_reset (CBOR *self)
		1533	CODE:
		1534	{
		1535	SvREFCNT_dec (self->incr_count);
		1536	self->incr_count = 0;
		1537	}
		1538
1130	void DESTROY (CBOR *self)	1539	void DESTROY (CBOR *self)
1131	CODE:	1540	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1541	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1542
1135	PROTOTYPES: ENABLE	1543	PROTOTYPES: ENABLE
1136		1544
1137	void encode_cbor (SV *scalar)	1545	void encode_cbor (SV *scalar)
		1546	ALIAS:
		1547	encode_cbor = 0
		1548	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1549	PPCODE:
1139	{	1550	{
1140	CBOR cbor;	1551	CBOR cbor;
1141	cbor_init (&cbor);	1552	cbor_init (&cbor);
		1553	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1554	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1555	XPUSHs (scalar);
1144	}	1556	}
1145		1557
1146	void decode_cbor (SV *cborstr)	1558	void decode_cbor (SV *cborstr)

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