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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 1.43 by root, Sun Jan 5 14:24:54 2014 UTC

…		…
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
12	#include "ecb.h"	12	#include "ecb.h"
13		13
		14	// compatibility with perl <5.18
		15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		17	#endif
		18	#ifndef HvNAMELEN
		19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		20	#endif
		21	#ifndef HvNAMEUTF8
		22	# define HvNAMEUTF8(hv) 0
		23	#endif
		24	#ifndef SvREFCNT_dec_NN
		25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		26	#endif
		27
		28	// known major and minor types
		29	enum cbor_type
		30	{
		31	MAJOR_SHIFT = 5,
		32	MINOR_MASK = 0x1f,
		33
		34	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		35	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		36	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		37	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		38	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		39	MAJOR_MAP = 5 << MAJOR_SHIFT,
		40	MAJOR_TAG = 6 << MAJOR_SHIFT,
		41	MAJOR_MISC = 7 << MAJOR_SHIFT,
		42
		43	// INT/STRING/ARRAY/MAP subtypes
		44	LENGTH_EXT1 = 24,
		45	LENGTH_EXT2 = 25,
		46	LENGTH_EXT4 = 26,
		47	LENGTH_EXT8 = 27,
		48
		49	// SIMPLE types (effectively MISC subtypes)
		50	SIMPLE_FALSE = 20,
		51	SIMPLE_TRUE = 21,
		52	SIMPLE_NULL = 22,
		53	SIMPLE_UNDEF = 23,
		54
		55	// MISC subtype (unused)
		56	MISC_EXT1 = 24,
		57	MISC_FLOAT16 = 25,
		58	MISC_FLOAT32 = 26,
		59	MISC_FLOAT64 = 27,
		60
		61	// BYTES/TEXT/ARRAY/MAP
		62	MINOR_INDEF = 31,
		63	};
		64
		65	// known tags
		66	enum cbor_tag
		67	{
		68	// extensions
		69	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		70	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		71	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		72	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		73	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		76
		77	// rfc7049
		78	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		79	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		80	CBOR_TAG_POS_BIGNUM = 2, // byte string
		81	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		82	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		83	CBOR_TAG_BIGFLOAT = 5, // array
		84
		85	CBOR_TAG_CONV_B64U = 21, // base64url, any
		86	CBOR_TAG_CONV_B64 = 22, // base64, any
		87	CBOR_TAG_CONV_HEX = 23, // base16, any
		88	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		89
		90	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		91	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		92	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		93	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		94	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		95
		96	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		97	};
		98
14	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	100	#define F_ALLOW_UNKNOWN 0x00000002UL
		101	#define F_ALLOW_SHARING 0x00000004UL
		102	#define F_ALLOW_CYCLES 0x00000008UL
		103	#define F_PACK_STRINGS 0x00000010UL
		104	#define F_VALIDATE_UTF8 0x00000020UL
16		105
17	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
18		107
19	#define SB do {	108	#define SB do {
20	#define SE } while (0)	109	#define SE } while (0)
…		…
31	#else	120	#else
32	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
34	#endif	123	#endif
35		124
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	125	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	126	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		127
39	typedef struct {	128	typedef struct {
40	U32 flags;	129	U32 flags;
41	U32 max_depth;	130	U32 max_depth;
42	STRLEN max_size;	131	STRLEN max_size;
		132	SV *filter;
43		133
44	SV *cb_object;	134	// for the incremental parser
45	HV *cb_sk_object;	135	STRLEN incr_pos; // the current offset into the text
		136	STRLEN incr_need; // minimum bytes needed to decode
		137	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	138	} CBOR;
47		139
48	ecb_inline void	140	ecb_inline void
49	cbor_init (CBOR *cbor)	141	cbor_init (CBOR *cbor)
50	{	142	{
51	Zero (cbor, 1, CBOR);	143	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	144	cbor->max_depth = 512;
		145	}
		146
		147	ecb_inline void
		148	cbor_free (CBOR *cbor)
		149	{
		150	SvREFCNT_dec (cbor->filter);
		151	SvREFCNT_dec (cbor->incr_count);
53	}	152	}
54		153
55	/////////////////////////////////////////////////////////////////////////////	154	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	155	// utility functions
57		156
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	178	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	179	#endif
81	}	180	}
82	}	181	}
83		182
84	/////////////////////////////////////////////////////////////////////////////	183	// minimum length of a string to be registered for stringref
85	// fp hell	184	ecb_inline int
86		185	minimum_string_length (UV idx)
87	//TODO	186	{
		187	return idx > 23
		188	? idx > 0xffU
		189	? idx > 0xffffU
		190	? idx > 0xffffffffU
		191	? 11
		192	: 7
		193	: 5
		194	: 4
		195	: 3;
		196	}
88		197
89	/////////////////////////////////////////////////////////////////////////////	198	/////////////////////////////////////////////////////////////////////////////
90	// encoder	199	// encoder
91		200
92	// structure used for encoding CBOR	201	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	204	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	205	char *end; // SvEND (sv)
97	SV *sv; // result scalar	206	SV *sv; // result scalar
98	CBOR cbor;	207	CBOR cbor;
99	U32 depth; // recursion level	208	U32 depth; // recursion level
		209	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		210	UV stringref_idx;
		211	HV *shareable; // ptr => index, or 0
		212	UV shareable_idx;
100	} enc_t;	213	} enc_t;
101		214
102	ecb_inline void	215	ecb_inline void
103	need (enc_t *enc, STRLEN len)	216	need (enc_t *enc, STRLEN len)
104	{	217	{
…		…
121	static void	234	static void
122	encode_uint (enc_t *enc, int major, UV len)	235	encode_uint (enc_t *enc, int major, UV len)
123	{	236	{
124	need (enc, 9);	237	need (enc, 9);
125		238
126	if (len < 24)	239	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	240	*enc->cur++ = major | len;
128	else if (len <= 0xff)	241	else if (ecb_expect_true (len <= 0xffU))
129	{	242	{
130	*enc->cur++ = major | 24;	243	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	244	*enc->cur++ = len;
132	}	245	}
133	else if (len <= 0xffff)	246	else if (len <= 0xffffU)
134	{	247	{
135	*enc->cur++ = major | 25;	248	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	249	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	250	*enc->cur++ = len;
138	}	251	}
139	else if (len <= 0xffffffff)	252	else if (len <= 0xffffffffU)
140	{	253	{
141	*enc->cur++ = major | 26;	254	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	255	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	256	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	257	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	258	*enc->cur++ = len;
146	}	259	}
147	else	260	else
148	{	261	{
149	*enc->cur++ = major | 27;	262	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	263	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	264	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	265	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	266	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	267	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	269	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	270	*enc->cur++ = len;
158	}	271	}
159	}	272	}
160		273
161	static void	274	ecb_inline void
		275	encode_tag (enc_t *enc, UV tag)
		276	{
		277	encode_uint (enc, MAJOR_TAG, tag);
		278	}
		279
		280	ecb_inline void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	281	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	282	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	283	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	284	need (enc, len);
166	memcpy (enc->cur, str, len);	285	memcpy (enc->cur, str, len);
167	enc->cur += len;	286	enc->cur += len;
168	}	287	}
169		288
		289	static void
		290	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		291	{
		292	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		293	{
		294	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		295
		296	if (SvOK (*svp))
		297	{
		298	// already registered, use stringref
		299	encode_tag (enc, CBOR_TAG_STRINGREF);
		300	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		301	return;
		302	}
		303	else if (len >= minimum_string_length (enc->stringref_idx))
		304	{
		305	// register only
		306	sv_setuv (*svp, enc->stringref_idx);
		307	++enc->stringref_idx;
		308	}
		309	}
		310
		311	encode_str (enc, utf8, str, len);
		312	}
		313
170	static void encode_sv (enc_t *enc, SV *sv);	314	static void encode_sv (enc_t *enc, SV *sv);
171		315
172	static void	316	static void
173	encode_av (enc_t *enc, AV *av)	317	encode_av (enc_t *enc, AV *av)
174	{	318	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	321	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	322	croak (ERR_NESTING_EXCEEDED);
179		323
180	++enc->depth;	324	++enc->depth;
181		325
182	encode_uint (enc, 0x80, len + 1);	326	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		327
184	for (i = 0; i <= len; ++i)	328	for (i = 0; i <= len; ++i)
185	{	329	{
186	SV **svp = av_fetch (av, i, 0);	330	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	331	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
202		346
203	int pairs = hv_iterinit (hv);	347	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	348	int mg = SvMAGICAL (hv);
205		349
206	if (mg)	350	if (mg)
207	encode_ch (enc, 0xa0 | 31);	351	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	352	else
209	encode_uint (enc, 0xa0, pairs);	353	encode_uint (enc, MAJOR_MAP, pairs);
210		354
211	while ((he = hv_iternext (hv)))	355	while ((he = hv_iternext (hv)))
212	{	356	{
213	if (HeKLEN (he) == HEf_SVKEY)	357	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	358	encode_sv (enc, HeSVKEY (he));
215	else	359	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	360	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		361
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	362	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	363	}
220		364
221	if (mg)	365	if (mg)
222	encode_ch (enc, 0xe0 | 31);	366	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		367
224	--enc->depth;	368	--enc->depth;
225	}	369	}
226		370
227	// encode objects, arrays and special \0=false and \1=true values.	371	// encode objects, arrays and special \0=false and \1=true values.
228	static void	372	static void
229	encode_rv (enc_t *enc, SV *sv)	373	encode_rv (enc_t *enc, SV *sv)
230	{	374	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	375	SvGETMAGIC (sv);
		376
234	svt = SvTYPE (sv);	377	svtype svt = SvTYPE (sv);
235		378
236	if (ecb_expect_false (SvOBJECT (sv)))	379	if (ecb_expect_false (SvOBJECT (sv)))
237	{	380	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	381	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	382	? types_boolean_stash
		383	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		384	HV *error_stash = !CBOR_SLOW || types_error_stash
		385	? types_error_stash
		386	: gv_stashpv ("Types::Serialiser::Error", 1);
		387	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		388	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	389	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		390
242	if (SvSTASH (sv) == stash)	391	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	392
		393	if (stash == boolean_stash)
		394	{
		395	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		396	return;
		397	}
		398	else if (stash == error_stash)
		399	{
		400	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		401	return;
		402	}
		403	else if (stash == tagged_stash)
		404	{
		405	if (svt != SVt_PVAV)
		406	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		407
		408	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		409	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		410
		411	return;
		412	}
		413	}
		414
		415	if (ecb_expect_false (SvREFCNT (sv) > 1)
		416	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		417	{
		418	if (!enc->shareable)
		419	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		420
		421	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		422
		423	if (SvOK (*svp))
		424	{
		425	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		426	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		427	return;
		428	}
244	else	429	else
245	{	430	{
246	#if 0 //TODO	431	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	432	++enc->shareable_idx;
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvOBJECT (sv)))
		438	{
		439	HV *stash = SvSTASH (sv);
		440	GV *method;
		441
		442	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	443	{
		444	dSP;
		445
		446	ENTER; SAVETMPS; PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	447	// 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)));	448	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		449
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	450	PUTBACK;
		451	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	452	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	453	SPAGAIN;
263		454
264	// catch this surprisingly common error	455	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	456	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)));	457	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		458
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	459	encode_sv (enc, POPs);
272		460
		461	PUTBACK;
		462
273	FREETMPS; LEAVE;	463	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	}	464	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	465	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	466	{
		467	dSP;
		468
		469	ENTER; SAVETMPS; PUSHMARK (SP);
		470	EXTEND (SP, 2);
		471	// we re-bless the reference to get overload and other niceties right
		472	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		473	PUSHs (sv_cbor);
		474
		475	PUTBACK;
		476	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		477	SPAGAIN;
		478
		479	// catch this surprisingly common error
		480	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		481	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		482
		483	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		484	encode_uint (enc, MAJOR_ARRAY, count + 1);
		485	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		486
		487	while (count)
		488	encode_sv (enc, SP[1 - count--]);
		489
		490	PUTBACK;
		491
		492	FREETMPS; LEAVE;
		493	}
283	else	494	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	495	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	496	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	497	}
289	else if (svt == SVt_PVHV)	498	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	499	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	500	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	501	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	502	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	503	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	encode_tag (enc, CBOR_TAG_INDIRECTION);
		505	encode_sv (enc, sv);
		506	}
313	}	507	}
314		508
315	static void	509	static void
316	encode_nv (enc_t *enc, SV *sv)	510	encode_nv (enc_t *enc, SV *sv)
317	{	511	{
318	double nv = SvNVX (sv);	512	double nv = SvNVX (sv);
319		513
320	need (enc, 9);	514	need (enc, 9);
321		515
322	if (ecb_expect_false (nv == (U32)nv))	516	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	517	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	518	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	519	else if (ecb_expect_false (nv == (float)nv))
326	{	520	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	521	uint32_t fp = ecb_float_to_binary32 (nv);
328		522
329	*enc->cur++ = 0xe0 | 26;	523	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		524
331	if (!ecb_big_endian ())	525	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	526	fp = ecb_bswap32 (fp);
333		527
334	memcpy (enc->cur, &fp, 4);	528	memcpy (enc->cur, &fp, 4);
…		…
336	}	530	}
337	else	531	else
338	{	532	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	533	uint64_t fp = ecb_double_to_binary64 (nv);
340		534
341	*enc->cur++ = 0xe0 | 27;	535	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		536
343	if (!ecb_big_endian ())	537	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	538	fp = ecb_bswap64 (fp);
345		539
346	memcpy (enc->cur, &fp, 8);	540	memcpy (enc->cur, &fp, 8);
…		…
355		549
356	if (SvPOKp (sv))	550	if (SvPOKp (sv))
357	{	551	{
358	STRLEN len;	552	STRLEN len;
359	char *str = SvPV (sv, len);	553	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	554	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	555	}
362	else if (SvNOKp (sv))	556	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	557	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	558	else if (SvIOKp (sv))
365	{	559	{
366	if (SvIsUV (sv))	560	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	561	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	562	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	563	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	564	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	565	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	566	}
373	else if (SvROK (sv))	567	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	568	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	569	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	570	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	571	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	572	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	573	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	574	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	575	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	576	}
383		577
384	static SV *	578	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	579	encode_cbor (SV *scalar, CBOR *cbor)
386	{	580	{
387	enc_t enc;	581	enc_t enc = { };
388		582
389	enc.cbor = *cbor;	583	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	584	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	585	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	586	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		587
395	SvPOK_only (enc.sv);	588	SvPOK_only (enc.sv);
		589
		590	if (cbor->flags & F_PACK_STRINGS)
		591	{
		592	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		593	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		594	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		595	}
		596
396	encode_sv (&enc, scalar);	597	encode_sv (&enc, scalar);
397		598
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	599	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	600	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		601
…		…
414	U8 *end; // end of input string	615	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	616	const char *err; // parse error, if != 0
416	CBOR cbor;	617	CBOR cbor;
417	U32 depth; // recursion depth	618	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	619	U32 maxdepth; // recursion depth limit
		620	AV *shareable;
		621	AV *stringref;
		622	SV *decode_tagged;
419	} dec_t;	623	} dec_t;
420		624
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	625	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		626
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	627	#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	630	#define DEC_DEC_DEPTH --dec->depth
427		631
428	static UV	632	static UV
429	decode_uint (dec_t *dec)	633	decode_uint (dec_t *dec)
430	{	634	{
431	switch (*dec->cur & 31)	635	U8 m = *dec->cur & MINOR_MASK;
432	{	636	++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		637
438	case 24:	638	if (ecb_expect_true (m < LENGTH_EXT1))
		639	return m;
		640	else if (ecb_expect_true (m == LENGTH_EXT1))
		641	{
439	WANT (2);	642	WANT (1);
440	dec->cur += 2;	643	dec->cur += 1;
441	return dec->cur[-1];	644	return dec->cur[-1];
442		645	}
443	case 25:	646	else if (ecb_expect_true (m == LENGTH_EXT2))
		647	{
444	WANT (3);	648	WANT (2);
445	dec->cur += 3;	649	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	650	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	651	| ((UV)dec->cur[-1]);
448		652	}
449	case 26:	653	else if (ecb_expect_true (m == LENGTH_EXT4))
		654	{
450	WANT (5);	655	WANT (4);
451	dec->cur += 5;	656	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	657	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	658	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	659	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	660	| ((UV)dec->cur[-1]);
456		661	}
457	case 27:	662	else if (ecb_expect_true (m == LENGTH_EXT8))
		663	{
458	WANT (9);	664	WANT (8);
459	dec->cur += 9;	665	dec->cur += 8;
		666
		667	return
		668	#if UVSIZE < 8
		669	0
		670	#else
460	return (((UV)dec->cur[-8]) << 56)	671	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	672	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	673	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	674	| (((UV)dec->cur[-5]) << 32)
		675	#endif
464	| (((UV)dec->cur[-4]) << 24)	676	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	677	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	678	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	679	| ((UV)dec->cur[-1]);
468		680	}
469	default:	681	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	682	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		683
473	fail:	684	fail:
474	return 0;	685	return 0;
475	}	686	}
476		687
…		…
481	{	692	{
482	AV *av = newAV ();	693	AV *av = newAV ();
483		694
484	DEC_INC_DEPTH;	695	DEC_INC_DEPTH;
485		696
486	if ((*dec->cur & 31) == 31)	697	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	698	{
488	++dec->cur;	699	++dec->cur;
489		700
490	for (;;)	701	for (;;)
491	{	702	{
492	WANT (1);	703	WANT (1);
493		704
494	if (*dec->cur == (0xe0 | 31))	705	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	706	{
496	++dec->cur;	707	++dec->cur;
497	break;	708	break;
498	}	709	}
499		710
…		…
502	}	713	}
503	else	714	else
504	{	715	{
505	int i, len = decode_uint (dec);	716	int i, len = decode_uint (dec);
506		717
		718	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);	719	av_fill (av, len - 1);
508		720
509	for (i = 0; i < len; ++i)	721	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	722	AvARRAY (av)[i] = decode_sv (dec);
511	}	723	}
…		…
517	SvREFCNT_dec (av);	729	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	730	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	731	return &PL_sv_undef;
520	}	732	}
521		733
		734	static void
		735	decode_he (dec_t *dec, HV *hv)
		736	{
		737	// for speed reasons, we specialcase single-string
		738	// byte or utf-8 strings as keys, but only when !stringref
		739
		740	if (ecb_expect_true (!dec->stringref))
		741	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		742	{
		743	I32 len = decode_uint (dec);
		744	char *key = (char *)dec->cur;
		745
		746	dec->cur += len;
		747
		748	hv_store (hv, key, len, decode_sv (dec), 0);
		749
		750	return;
		751	}
		752	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		753	{
		754	I32 len = decode_uint (dec);
		755	char *key = (char *)dec->cur;
		756
		757	dec->cur += len;
		758
		759	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		760	if (!is_utf8_string (key, len))
		761	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		762
		763	hv_store (hv, key, -len, decode_sv (dec), 0);
		764
		765	return;
		766	}
		767
		768	SV *k = decode_sv (dec);
		769	SV *v = decode_sv (dec);
		770
		771	hv_store_ent (hv, k, v, 0);
		772	SvREFCNT_dec (k);
		773
		774	fail:
		775	;
		776	}
		777
522	static SV *	778	static SV *
523	decode_hv (dec_t *dec)	779	decode_hv (dec_t *dec)
524	{	780	{
525	HV *hv = newHV ();	781	HV *hv = newHV ();
526		782
527	DEC_INC_DEPTH;	783	DEC_INC_DEPTH;
528		784
529	if ((*dec->cur & 31) == 31)	785	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	786	{
531	++dec->cur;	787	++dec->cur;
532		788
533	for (;;)	789	for (;;)
534	{	790	{
535	WANT (1);	791	WANT (1);
536		792
537	if (*dec->cur == (0xe0 | 31))	793	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	794	{
539	++dec->cur;	795	++dec->cur;
540	break;	796	break;
541	}	797	}
542		798
543	SV *k = decode_sv (dec);	799	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	800	}
548	}	801	}
549	else	802	else
550	{	803	{
551	int len = decode_uint (dec);	804	int pairs = decode_uint (dec);
552		805
553	while (len--)	806	while (pairs--)
554	{	807	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	}	808	}
561		809
562	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	811	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		812
720	fail:	813	fail:
721	SvREFCNT_dec (hv);	814	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	816	return &PL_sv_undef;
724	}	817	}
725		818
726	static SV *	819	static SV *
727	decode_str (dec_t *dec, int utf8)	820	decode_str (dec_t *dec, int utf8)
728	{	821	{
729	SV *sv;	822	SV *sv = 0;
730		823
731	if ((*dec->cur & 31) == 31)	824	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	825	{
		826	// indefinite length strings
733	++dec->cur;	827	++dec->cur;
734		828
		829	U8 major = *dec->cur & MAJOR_MISC;
		830
735	sv = newSVpvn ("", 0);	831	sv = newSVpvn ("", 0);
736		832
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	833	for (;;)
739	{	834	{
740	WANT (1);	835	WANT (1);
741		836
742	if (*dec->cur == (0xe0 | 31))	837	if ((*dec->cur - major) > LENGTH_EXT8)
		838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	839	{
744	++dec->cur;	840	++dec->cur;
745	break;	841	break;
746	}	842	}
		843	else
		844	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		845
748	SV *sv2 = decode_sv (dec);	846	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	847
		848	WANT (len);
		849	sv_catpvn (sv, dec->cur, len);
		850	dec->cur += len;
750	}	851	}
751	}	852	}
752	else	853	else
753	{	854	{
754	STRLEN len = decode_uint (dec);	855	STRLEN len = decode_uint (dec);
755		856
756	WANT (len);	857	WANT (len);
757	sv = newSVpvn (dec->cur, len);	858	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	859	dec->cur += len;
		860
		861	if (ecb_expect_false (dec->stringref)
		862	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		863	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	864	}
760		865
761	if (utf8)	866	if (utf8)
		867	{
		868	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		869	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		870	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		871
762	SvUTF8_on (sv);	872	SvUTF8_on (sv);
		873	}
763		874
764	return sv;	875	return sv;
765		876
766	fail:	877	fail:
		878	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	879	return &PL_sv_undef;
768	}	880	}
769		881
770	static SV *	882	static SV *
771	decode_tagged (dec_t *dec)	883	decode_tagged (dec_t *dec)
772	{	884	{
		885	SV *sv = 0;
773	UV tag = decode_uint (dec);	886	UV tag = decode_uint (dec);
		887
		888	WANT (1);
		889
		890	switch (tag)
		891	{
		892	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	893	sv = decode_sv (dec);
		894	break;
775		895
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	896	case CBOR_TAG_INDIRECTION:
		897	sv = newRV_noinc (decode_sv (dec));
		898	break;
		899
		900	case CBOR_TAG_STRINGREF_NAMESPACE:
		901	{
		902	ENTER; SAVETMPS;
		903
		904	SAVESPTR (dec->stringref);
		905	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		906
		907	sv = decode_sv (dec);
		908
		909	FREETMPS; LEAVE;
		910	}
		911	break;
		912
		913	case CBOR_TAG_STRINGREF:
		914	{
		915	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		916	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		917
		918	UV idx = decode_uint (dec);
		919
		920	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		921	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		922
		923	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		924	}
		925	break;
		926
		927	case CBOR_TAG_VALUE_SHAREABLE:
		928	{
		929	if (ecb_expect_false (!dec->shareable))
		930	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		931
		932	if (dec->cbor.flags & F_ALLOW_CYCLES)
		933	{
		934	sv = newSV (0);
		935	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		936
		937	SV *osv = decode_sv (dec);
		938	sv_setsv (sv, osv);
		939	SvREFCNT_dec_NN (osv);
		940	}
		941	else
		942	{
		943	av_push (dec->shareable, &PL_sv_undef);
		944	int idx = AvFILLp (dec->shareable);
		945	sv = decode_sv (dec);
		946	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		947	}
		948	}
		949	break;
		950
		951	case CBOR_TAG_VALUE_SHAREDREF:
		952	{
		953	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		954	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		955
		956	UV idx = decode_uint (dec);
		957
		958	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		959	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		960
		961	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		962
		963	if (sv == &PL_sv_undef)
		964	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		965	}
		966	break;
		967
		968	case CBOR_TAG_PERL_OBJECT:
		969	{
		970	sv = decode_sv (dec);
		971
		972	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		973	ERR ("corrupted CBOR data (non-array perl object)");
		974
		975	AV *av = (AV *)SvRV (sv);
		976	int len = av_len (av) + 1;
		977	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		978
		979	if (!stash)
		980	ERR ("cannot decode perl-object (package does not exist)");
		981
		982	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		983
		984	if (!method)
		985	ERR ("cannot decode perl-object (package does not have a THAW method)");
		986
		987	dSP;
		988
		989	ENTER; SAVETMPS; PUSHMARK (SP);
		990	EXTEND (SP, len + 1);
		991	// we re-bless the reference to get overload and other niceties right
		992	PUSHs (*av_fetch (av, 0, 1));
		993	PUSHs (sv_cbor);
		994
		995	int i;
		996
		997	for (i = 1; i < len; ++i)
		998	PUSHs (*av_fetch (av, i, 1));
		999
		1000	PUTBACK;
		1001	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1002	SPAGAIN;
		1003
		1004	if (SvTRUE (ERRSV))
		1005	{
		1006	FREETMPS; LEAVE;
		1007	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1008	}
		1009
		1010	SvREFCNT_dec (sv);
		1011	sv = SvREFCNT_inc (POPs);
		1012
		1013	PUTBACK;
		1014
		1015	FREETMPS; LEAVE;
		1016	}
		1017	break;
		1018
		1019	default:
		1020	{
		1021	sv = decode_sv (dec);
		1022
		1023	dSP;
		1024	ENTER; SAVETMPS; PUSHMARK (SP);
		1025	EXTEND (SP, 2);
		1026	PUSHs (newSVuv (tag));
		1027	PUSHs (sv);
		1028
		1029	PUTBACK;
		1030	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1031	SPAGAIN;
		1032
		1033	if (SvTRUE (ERRSV))
		1034	{
		1035	FREETMPS; LEAVE;
		1036	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1037	}
		1038
		1039	if (count)
		1040	{
		1041	SvREFCNT_dec (sv);
		1042	sv = SvREFCNT_inc (POPs);
		1043	}
		1044	else
		1045	{
		1046	AV *av = newAV ();
		1047	av_push (av, newSVuv (tag));
		1048	av_push (av, sv);
		1049
		1050	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1051	? cbor_tagged_stash
		1052	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1053	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1054	}
		1055
		1056	PUTBACK;
		1057
		1058	FREETMPS; LEAVE;
		1059	}
		1060	break;
		1061	}
		1062
777	return sv;	1063	return sv;
778		1064
779	AV *av = newAV ();	1065	fail:
780	av_push (av, newSVuv (tag));	1066	SvREFCNT_dec (sv);
781	av_push (av, sv);	1067	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1068	}
784		1069
785	static SV *	1070	static SV *
786	decode_sv (dec_t *dec)	1071	decode_sv (dec_t *dec)
787	{	1072	{
788	WANT (1);	1073	WANT (1);
789		1074
790	switch (*dec->cur >> 5)	1075	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1076	{
792	case 0: // unsigned int	1077	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1078	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1079	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1080	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1081	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1082	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1083	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1084
800	return decode_str (dec, 1);	1085	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)	1086	switch (*dec->cur++ & MINOR_MASK)
809	{	1087	{
810	case 20:	1088	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1089	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1090	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1091	#endif
814	return newSVsv (cbor_false);	1092	return newSVsv (types_false);
815	case 21:	1093	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1094	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1095	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1096	#endif
819	return newSVsv (cbor_true);	1097	return newSVsv (types_true);
820	case 22:	1098	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1099	return newSVsv (&PL_sv_undef);
		1100	case SIMPLE_UNDEF:
		1101	#if CBOR_SLOW
		1102	types_error = get_bool ("Types::Serialiser::error");
		1103	#endif
		1104	return newSVsv (types_error);
822		1105
823	case 25:	1106	case MISC_FLOAT16:
824	{	1107	{
825	WANT (2);	1108	WANT (2);
826		1109
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1110	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1111	dec->cur += 2;
829		1112
830	return newSVnv (ecb_binary16_to_float (fp));	1113	return newSVnv (ecb_binary16_to_float (fp));
831	}	1114	}
832		1115
833	case 26:	1116	case MISC_FLOAT32:
834	{	1117	{
835	uint32_t fp;	1118	uint32_t fp;
836	WANT (4);	1119	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1120	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1121	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1124	fp = ecb_bswap32 (fp);
842		1125
843	return newSVnv (ecb_binary32_to_float (fp));	1126	return newSVnv (ecb_binary32_to_float (fp));
844	}	1127	}
845		1128
846	case 27:	1129	case MISC_FLOAT64:
847	{	1130	{
848	uint64_t fp;	1131	uint64_t fp;
849	WANT (8);	1132	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1133	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1134	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1137	fp = ecb_bswap64 (fp);
855		1138
856	return newSVnv (ecb_binary64_to_double (fp));	1139	return newSVnv (ecb_binary64_to_double (fp));
857	}	1140	}
858		1141
859	// 0..19 unassigned	1142	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1143	// 24 reserved + unassigned simple (reserved values are not encodable)
		1144	// 28-30 unassigned misc
		1145	// 31 break code
861	default:	1146	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1147	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1148	}
864		1149
865	break;	1150	break;
866	}	1151	}
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		1152
924	fail:	1153	fail:
925	return &PL_sv_undef;	1154	return &PL_sv_undef;
926	}	1155	}
927		1156
928	static SV *	1157	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1158	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1159	{
931	dec_t dec;	1160	dec_t dec = { };
932	SV *sv;	1161	SV *sv;
		1162	STRLEN len;
		1163	char *data = SvPVbyte (string, len);
933		1164
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)	1165	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",	1166	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);	1167	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1168
969	dec.cbor = *cbor;	1169	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1170	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1171	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		1172
978	sv = decode_sv (&dec);	1173	sv = decode_sv (&dec);
979		1174
980	if (offset_return)	1175	if (offset_return)
981	*offset_return = dec.cur;	1176	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1179	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1180	dec.err = "garbage after CBOR object";
986		1181
987	if (dec.err)	1182	if (dec.err)
988	{	1183	{
		1184	if (dec.shareable)
		1185	{
		1186	// need to break cyclic links, which whould all be in shareable
		1187	int i;
		1188	SV **svp;
		1189
		1190	for (i = av_len (dec.shareable) + 1; i--; )
		1191	if ((svp = av_fetch (dec.shareable, i, 0)))
		1192	sv_setsv (*svp, &PL_sv_undef);
		1193	}
		1194
989	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1196	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1197	}
992		1198
993	sv = sv_2mortal (sv);	1199	sv = sv_2mortal (sv);
994		1200
995	return sv;	1201	return sv;
996	}	1202	}
997		1203
		1204	/////////////////////////////////////////////////////////////////////////////
		1205	// incremental parser
		1206
		1207	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1208
		1209	// returns 0 for notyet, 1 for success or error
		1210	static int
		1211	incr_parse (CBOR *self, SV *cborstr)
		1212	{
		1213	STRLEN cur;
		1214	SvPV (cborstr, cur);
		1215
		1216	while (ecb_expect_true (self->incr_need <= cur))
		1217	{
		1218	// table of integer count bytes
		1219	static I8 incr_len[MINOR_MASK + 1] = {
		1220	0, 0, 0, 0, 0, 0, 0, 0,
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	1, 2, 4, 8,-1,-1,-1,-2
		1224	};
		1225
		1226	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1227	U8 m = *p & MINOR_MASK;
		1228	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1229	I8 ilen = incr_len[m];
		1230
		1231	self->incr_need = self->incr_pos + 1;
		1232
		1233	if (ecb_expect_false (ilen < 0))
		1234	{
		1235	if (m != MINOR_INDEF)
		1236	return 1; // error
		1237
		1238	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1239	{
		1240	if (count >= 0)
		1241	return 1; // error
		1242
		1243	count = 1;
		1244	}
		1245	else
		1246	{
		1247	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1248	count = -1;
		1249	}
		1250	}
		1251	else
		1252	{
		1253	self->incr_need += ilen;
		1254	if (ecb_expect_false (self->incr_need > cur))
		1255	return 0;
		1256
		1257	int major = *p >> MAJOR_SHIFT;
		1258
		1259	switch (major)
		1260	{
		1261	case MAJOR_BYTES >> MAJOR_SHIFT:
		1262	case MAJOR_TEXT >> MAJOR_SHIFT:
		1263	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1264	case MAJOR_MAP >> MAJOR_SHIFT:
		1265	{
		1266	UV len;
		1267
		1268	if (ecb_expect_false (ilen))
		1269	{
		1270	len = 0;
		1271
		1272	do {
		1273	len = (len << 8) | *++p;
		1274	} while (--ilen);
		1275	}
		1276	else
		1277	len = m;
		1278
		1279	switch (major)
		1280	{
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	self->incr_need += len;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	break;
		1288
		1289	case MAJOR_MAP >> MAJOR_SHIFT:
		1290	len <<= 1;
		1291	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1292	if (len)
		1293	{
		1294	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1295	count = len + 1;
		1296	}
		1297	break;
		1298	}
		1299	}
		1300	}
		1301	}
		1302
		1303	self->incr_pos = self->incr_need;
		1304
		1305	if (count > 0)
		1306	{
		1307	while (!--count)
		1308	{
		1309	if (!AvFILLp (self->incr_count))
		1310	return 1; // done
		1311
		1312	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1313	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1314	}
		1315
		1316	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1317	}
		1318	}
		1319
		1320	return 0;
		1321	}
		1322
		1323
998	/////////////////////////////////////////////////////////////////////////////	1324	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1325	// XS interface functions
1000		1326
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1327	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1328
1003	BOOT:	1329	BOOT:
1004	{	1330	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1331	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1332	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1333
1008	cbor_true = get_bool ("CBOR::XS::true");	1334	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1335	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1336
		1337	types_true = get_bool ("Types::Serialiser::true" );
		1338	types_false = get_bool ("Types::Serialiser::false");
		1339	types_error = get_bool ("Types::Serialiser::error");
		1340
		1341	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1342
		1343	sv_cbor = newSVpv ("CBOR", 0);
		1344	SvREADONLY_on (sv_cbor);
1010	}	1345	}
1011		1346
1012	PROTOTYPES: DISABLE	1347	PROTOTYPES: DISABLE
1013		1348
1014	void CLONE (...)	1349	void CLONE (...)
1015	CODE:	1350	CODE:
1016	cbor_stash = 0;	1351	cbor_stash = 0;
		1352	cbor_tagged_stash = 0;
		1353	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1354	types_boolean_stash = 0;
1018		1355
1019	void new (char *klass)	1356	void new (char *klass)
1020	PPCODE:	1357	PPCODE:
1021	{	1358	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1359	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1367
1031	void shrink (CBOR *self, int enable = 1)	1368	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1369	ALIAS:
1033	shrink = F_SHRINK	1370	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1371	allow_unknown = F_ALLOW_UNKNOWN
		1372	allow_sharing = F_ALLOW_SHARING
		1373	allow_cycles = F_ALLOW_CYCLES
		1374	pack_strings = F_PACK_STRINGS
		1375	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1376	PPCODE:
1036	{	1377	{
1037	if (enable)	1378	if (enable)
1038	self->flags |= ix;	1379	self->flags |= ix;
1039	else	1380	else
…		…
1044		1385
1045	void get_shrink (CBOR *self)	1386	void get_shrink (CBOR *self)
1046	ALIAS:	1387	ALIAS:
1047	get_shrink = F_SHRINK	1388	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1389	get_allow_unknown = F_ALLOW_UNKNOWN
		1390	get_allow_sharing = F_ALLOW_SHARING
		1391	get_allow_cycles = F_ALLOW_CYCLES
		1392	get_pack_strings = F_PACK_STRINGS
		1393	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1394	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1395	XPUSHs (boolSV (self->flags & ix));
1051		1396
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1397	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1398	PPCODE:
…		…
1069	CODE:	1414	CODE:
1070	RETVAL = self->max_size;	1415	RETVAL = self->max_size;
1071	OUTPUT:	1416	OUTPUT:
1072	RETVAL	1417	RETVAL
1073		1418
1074	#if 0 //TODO	1419	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1420	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1421	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1422	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1423	XPUSHs (ST (0));
1083	}
1084		1424
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1425	SV *get_filter (CBOR *self)
1086	PPCODE:	1426	CODE:
1087	{	1427	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1428	OUTPUT:
1089	self->cb_sk_object = newHV ();	1429	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		1430
1109	void encode (CBOR *self, SV *scalar)	1431	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1432	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1433	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1434	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1447	EXTEND (SP, 2);
1126	PUSHs (sv);	1448	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1449	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1450	}
1129		1451
		1452	void incr_parse (CBOR *self, SV *cborstr)
		1453	ALIAS:
		1454	incr_parse_multiple = 1
		1455	PPCODE:
		1456	{
		1457	if (SvUTF8 (cborstr))
		1458	sv_utf8_downgrade (cborstr, 0);
		1459
		1460	if (!self->incr_count)
		1461	{
		1462	self->incr_count = newAV ();
		1463	self->incr_pos = 0;
		1464	self->incr_need = 1;
		1465
		1466	av_push (self->incr_count, newSViv (1));
		1467	}
		1468
		1469	do
		1470	{
		1471	if (!incr_parse (self, cborstr))
		1472	{
		1473	if (self->incr_need > self->max_size && self->max_size)
		1474	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1475	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1476
		1477	break;
		1478	}
		1479
		1480	SV *sv;
		1481	char *offset;
		1482
		1483	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1484	XPUSHs (sv);
		1485
		1486	sv_chop (cborstr, offset);
		1487
		1488	av_clear (self->incr_count);
		1489	av_push (self->incr_count, newSViv (1));
		1490
		1491	self->incr_pos = 0;
		1492	self->incr_need = self->incr_pos + 1;
		1493	}
		1494	while (ix);
		1495	}
		1496
		1497	void incr_reset (CBOR *self)
		1498	CODE:
		1499	{
		1500	SvREFCNT_dec (self->incr_count);
		1501	self->incr_count = 0;
		1502	}
		1503
1130	void DESTROY (CBOR *self)	1504	void DESTROY (CBOR *self)
1131	CODE:	1505	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1506	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1507
1135	PROTOTYPES: ENABLE	1508	PROTOTYPES: ENABLE
1136		1509
1137	void encode_cbor (SV *scalar)	1510	void encode_cbor (SV *scalar)
		1511	ALIAS:
		1512	encode_cbor = 0
		1513	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1514	PPCODE:
1139	{	1515	{
1140	CBOR cbor;	1516	CBOR cbor;
1141	cbor_init (&cbor);	1517	cbor_init (&cbor);
		1518	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1519	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1520	XPUSHs (scalar);
1144	}	1521	}
1145		1522
1146	void decode_cbor (SV *cborstr)	1523	void decode_cbor (SV *cborstr)

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