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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs.
Revision 1.59 by root, Fri Nov 25 23:37:27 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_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
16		108
17	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
18		110
19	#define SB do {	111	#define SB do {
20	#define SE } while (0)	112	#define SE } while (0)
…		…
31	#else	123	#else
32	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
34	#endif	126	#endif
35		127
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		130
39	typedef struct {	131	typedef struct {
40	U32 flags;	132	U32 flags;
41	U32 max_depth;	133	U32 max_depth;
42	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	141	} CBOR;
44		142
45	ecb_inline void	143	ecb_inline void
46	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
47	{	145	{
48	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
50	}	155	}
51		156
52	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	158	// utility functions
54		159
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	182	#endif
78	}	183	}
79	}	184	}
80		185
81	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
82	// fp hell	187	ecb_inline int
83		188	minimum_string_length (UV idx)
84	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
85		200
86	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
87	// encoder	202	// encoder
88		203
89	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
94	SV *sv; // result scalar	209	SV *sv; // result scalar
95	CBOR cbor;	210	CBOR cbor;
96	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
97	} enc_t;	216	} enc_t;
98		217
99	ecb_inline void	218	ecb_inline void
100	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
101	{	220	{
…		…
118	static void	237	static void
119	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
120	{	239	{
121	need (enc, 9);	240	need (enc, 9);
122		241
123	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
125	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
126	{	245	{
127	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	247	*enc->cur++ = len;
129	}	248	}
130	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
131	{	250	{
132	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	253	*enc->cur++ = len;
135	}	254	}
136	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
137	{	256	{
138	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	261	*enc->cur++ = len;
143	}	262	}
144	else	263	else
145	{	264	{
146	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	273	*enc->cur++ = len;
155	}	274	}
156	}	275	}
157		276
158	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	286	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	317	need (enc, len);
163	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
164	enc->cur += len;	319	enc->cur += len;
165	}	320	}
166		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
167	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
168		348
169	static void	349	static void
170	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
171	{	351	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
176		356
177	++enc->depth;	357	++enc->depth;
178		358
179	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		360
		361	if (SvMAGICAL (av))
181	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
182	{	363	{
183	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
186		373
187	--enc->depth;	374	--enc->depth;
188	}	375	}
189		376
190	static void	377	static void
…		…
199		386
200	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
202		389
203	if (mg)	390	if (mg)
204	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	392	else
206	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
207		394
208	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
209	{	396	{
210	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
212	else	399	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		401
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	403	}
217		404
218	if (mg)	405	if (mg)
219	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		407
221	--enc->depth;	408	--enc->depth;
222	}	409	}
223		410
224	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
225	static void	412	static void
226	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
227	{	414	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
231	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
232		418
233	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
234	{	420	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	422	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		424	HV *error_stash = !CBOR_SLOW || types_error_stash
		425	? types_error_stash
		426	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	428	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		430
		431	HV *stash = SvSTASH (sv);
		432
242	if (SvSTASH (sv) == boolean_stash)	433	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
		438	else if (stash == error_stash)
		439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
244	else if (SvSTASH (sv) == tagged_stash)	443	else if (stash == tagged_stash)
245	{	444	{
246	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		447
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
251	}	468	}
252	else	469	else
253	{	470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		490
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	494	SPAGAIN;
268		495
269	// catch this surprisingly common error	496	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		499
273	sv = POPs;	500	encode_sv (enc, POPs);
		501
274	PUTBACK;	502	PUTBACK;
275		503
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	504	FREETMPS; LEAVE;
279	}	505	}
		506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
280	else	537	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	540	}
285	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	544	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	545	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
309	}	550	}
310		551
311	static void	552	static void
312	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
313	{	554	{
314	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
315		556
316	need (enc, 9);	557	need (enc, 9);
317		558
318	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	561	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
322	{	563	{
323	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
324		565
325	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
326		567
327	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
329		570
330	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
332	}	573	}
333	else	574	else
334	{	575	{
335	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
336		577
337	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
338		579
339	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
341		582
342	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
351		592
352	if (SvPOKp (sv))	593	if (SvPOKp (sv))
353	{	594	{
354	STRLEN len;	595	STRLEN len;
355	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	598	}
358	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	600	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
361	{	602	{
362	if (SvIsUV (sv))	603	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	607	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	609	}
369	else if (SvROK (sv))	610	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	612	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	616	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	619	}
379		620
380	static SV *	621	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
382	{	623	{
383	enc_t enc;	624	enc_t enc = { 0 };
384		625
385	enc.cbor = *cbor;	626	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		630
391	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
392	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
393		641
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		644
…		…
410	U8 *end; // end of input string	658	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
412	CBOR cbor;	660	CBOR cbor;
413	U32 depth; // recursion depth	661	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
		666	SV *err_sv; // optional sv for error, needs to be freed
415	} dec_t;	667	} dec_t;
416		668
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	669	// set dec->err to ERRSV
		670	ecb_cold static void
		671	err_errsv (dec_t *dec)
		672	{
		673	if (!dec->err)
		674	{
		675	dec->err_sv = newSVsv (ERRSV);
418		676
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	677	// chop off the trailing \n
		678	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		679	*SvEND (dec->err_sv) = 0;
420		680
		681	dec->err = SvPVutf8_nolen (dec->err_sv);
		682	}
		683	}
		684
		685	// the following functions are used to reduce code size and help the compiler to optimise
		686	ecb_cold static void
		687	err_set (dec_t *dec, const char *reason)
		688	{
		689	if (!dec->err)
		690	dec->err = reason;
		691	}
		692
		693	ecb_cold static void
		694	err_unexpected_end (dec_t *dec)
		695	{
		696	err_set (dec, "unexpected end of CBOR data");
		697	}
		698
		699	ecb_cold static void
		700	err_nesting_exceeded (dec_t *dec)
		701	{
		702	err_set (dec, ERR_NESTING_EXCEEDED);
		703	}
		704
		705	#define ERR_DO(do) SB do; goto fail; SE
		706	#define ERR(reason) ERR_DO (err_set (dec, reason))
		707	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		708
		709	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		710
421	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	711	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
422	#define DEC_DEC_DEPTH --dec->depth	712	#define DEC_DEC_DEPTH --dec->depth
423		713
424	static UV	714	static UV
425	decode_uint (dec_t *dec)	715	decode_uint (dec_t *dec)
426	{	716	{
427	switch (*dec->cur & 31)	717	U8 m = *dec->cur & MINOR_MASK;
428	{	718	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		719
434	case 24:	720	if (ecb_expect_true (m < LENGTH_EXT1))
		721	return m;
		722	else if (ecb_expect_true (m == LENGTH_EXT1))
		723	{
435	WANT (2);	724	WANT (1);
436	dec->cur += 2;	725	dec->cur += 1;
437	return dec->cur[-1];	726	return dec->cur[-1];
438		727	}
439	case 25:	728	else if (ecb_expect_true (m == LENGTH_EXT2))
		729	{
440	WANT (3);	730	WANT (2);
441	dec->cur += 3;	731	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	732	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	733	| ((UV)dec->cur[-1]);
444		734	}
445	case 26:	735	else if (ecb_expect_true (m == LENGTH_EXT4))
		736	{
446	WANT (5);	737	WANT (4);
447	dec->cur += 5;	738	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	739	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	740	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	741	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	742	| ((UV)dec->cur[-1]);
452		743	}
453	case 27:	744	else if (ecb_expect_true (m == LENGTH_EXT8))
		745	{
454	WANT (9);	746	WANT (8);
455	dec->cur += 9;	747	dec->cur += 8;
		748
		749	return
		750	#if UVSIZE < 8
		751	0
		752	#else
456	return (((UV)dec->cur[-8]) << 56)	753	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	754	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	755	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	756	| (((UV)dec->cur[-5]) << 32)
		757	#endif
460	| (((UV)dec->cur[-4]) << 24)	758	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	759	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	760	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	761	| ((UV)dec->cur[-1]);
464		762	}
465	default:	763	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	764	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		765
469	fail:	766	fail:
470	return 0;	767	return 0;
471	}	768	}
472		769
…		…
477	{	774	{
478	AV *av = newAV ();	775	AV *av = newAV ();
479		776
480	DEC_INC_DEPTH;	777	DEC_INC_DEPTH;
481		778
482	if ((*dec->cur & 31) == 31)	779	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	780	{
484	++dec->cur;	781	++dec->cur;
485		782
486	for (;;)	783	for (;;)
487	{	784	{
488	WANT (1);	785	WANT (1);
489		786
490	if (*dec->cur == (0xe0 | 31))	787	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
491	{	788	{
492	++dec->cur;	789	++dec->cur;
493	break;	790	break;
494	}	791	}
495		792
496	av_push (av, decode_sv (dec));	793	av_push (av, decode_sv (dec));
497	}	794	}
498	}	795	}
499	else	796	else
500	{	797	{
501	int i, len = decode_uint (dec);	798	UV i, len = decode_uint (dec);
502		799
		800	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	801	av_fill (av, len - 1);
504		802
505	for (i = 0; i < len; ++i)	803	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	804	AvARRAY (av)[i] = decode_sv (dec);
507	}	805	}
…		…
513	SvREFCNT_dec (av);	811	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	812	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	813	return &PL_sv_undef;
516	}	814	}
517		815
		816	static void
		817	decode_he (dec_t *dec, HV *hv)
		818	{
		819	// for speed reasons, we specialcase single-string
		820	// byte or utf-8 strings as keys, but only when !stringref
		821
		822	if (ecb_expect_true (!dec->stringref))
		823	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		824	{
		825	STRLEN len = decode_uint (dec);
		826	char *key = (char *)dec->cur;
		827
		828	WANT (len);
		829	dec->cur += len;
		830
		831	hv_store (hv, key, len, decode_sv (dec), 0);
		832
		833	return;
		834	}
		835	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		836	{
		837	STRLEN len = decode_uint (dec);
		838	char *key = (char *)dec->cur;
		839
		840	WANT (len);
		841	dec->cur += len;
		842
		843	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		844	if (!is_utf8_string (key, len))
		845	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		846
		847	hv_store (hv, key, -len, decode_sv (dec), 0);
		848
		849	return;
		850	}
		851
		852	SV *k = decode_sv (dec);
		853	SV *v = decode_sv (dec);
		854
		855	// we leak memory if uncaught exceptions are thrown by random magical
		856	// methods, and this is hopefully the only place where it can happen,
		857	// so if there is a chance of an exception, take the very slow path.
		858	// since catching exceptions is "undocumented/internal/forbidden" by
		859	// the new p5p powers, we need to call out to a perl function :/
		860	if (ecb_expect_false (SvAMAGIC (k)))
		861	{
		862	dSP;
		863
		864	ENTER; SAVETMPS;
		865	PUSHMARK (SP);
		866	EXTEND (SP, 3);
		867	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		868	PUSHs (sv_2mortal (k));
		869	PUSHs (sv_2mortal (v));
		870
		871	PUTBACK;
		872	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		873	SPAGAIN;
		874
		875	FREETMPS; LEAVE;
		876
		877	if (SvTRUE (ERRSV))
		878	ERR_ERRSV;
		879
		880	return;
		881	}
		882
		883	hv_store_ent (hv, k, v, 0);
		884	SvREFCNT_dec (k);
		885
		886	fail:
		887	;
		888	}
		889
518	static SV *	890	static SV *
519	decode_hv (dec_t *dec)	891	decode_hv (dec_t *dec)
520	{	892	{
521	HV *hv = newHV ();	893	HV *hv = newHV ();
522		894
523	DEC_INC_DEPTH;	895	DEC_INC_DEPTH;
524		896
525	if ((*dec->cur & 31) == 31)	897	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	898	{
527	++dec->cur;	899	++dec->cur;
528		900
529	for (;;)	901	for (;;)
530	{	902	{
531	WANT (1);	903	WANT (1);
532		904
533	if (*dec->cur == (0xe0 | 31))	905	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
534	{	906	{
535	++dec->cur;	907	++dec->cur;
536	break;	908	break;
537	}	909	}
538		910
539	SV *k = decode_sv (dec);	911	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	912	}
544	}	913	}
545	else	914	else
546	{	915	{
547	int len = decode_uint (dec);	916	UV pairs = decode_uint (dec);
548		917
		918	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		919
549	while (len--)	920	while (pairs--)
550	{	921	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	922	}
557		923
558	DEC_DEC_DEPTH;	924	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	925	return newRV_noinc ((SV *)hv);
560		926
…		…
567	static SV *	933	static SV *
568	decode_str (dec_t *dec, int utf8)	934	decode_str (dec_t *dec, int utf8)
569	{	935	{
570	SV *sv = 0;	936	SV *sv = 0;
571		937
572	if ((*dec->cur & 31) == 31)	938	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
573	{	939	{
		940	// indefinite length strings
574	++dec->cur;	941	++dec->cur;
575		942
		943	U8 major = *dec->cur & MAJOR_MISC;
		944
576	sv = newSVpvn ("", 0);	945	sv = newSVpvn ("", 0);
577		946
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	947	for (;;)
580	{	948	{
581	WANT (1);	949	WANT (1);
582		950
583	if (*dec->cur == (0xe0 | 31))	951	if ((*dec->cur - major) > LENGTH_EXT8)
		952	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	953	{
585	++dec->cur;	954	++dec->cur;
586	break;	955	break;
587	}	956	}
		957	else
		958	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		959
589	sv_catsv (sv, decode_sv (dec));	960	STRLEN len = decode_uint (dec);
		961
		962	WANT (len);
		963	sv_catpvn (sv, dec->cur, len);
		964	dec->cur += len;
590	}	965	}
591	}	966	}
592	else	967	else
593	{	968	{
594	STRLEN len = decode_uint (dec);	969	STRLEN len = decode_uint (dec);
595		970
596	WANT (len);	971	WANT (len);
597	sv = newSVpvn (dec->cur, len);	972	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	973	dec->cur += len;
		974
		975	if (ecb_expect_false (dec->stringref)
		976	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		977	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	978	}
600		979
601	if (utf8)	980	if (utf8)
		981	{
		982	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		983	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		984	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		985
602	SvUTF8_on (sv);	986	SvUTF8_on (sv);
		987	}
603		988
604	return sv;	989	return sv;
605		990
606	fail:	991	fail:
607	SvREFCNT_dec (sv);	992	SvREFCNT_dec (sv);
…		…
609	}	994	}
610		995
611	static SV *	996	static SV *
612	decode_tagged (dec_t *dec)	997	decode_tagged (dec_t *dec)
613	{	998	{
		999	SV *sv = 0;
614	UV tag = decode_uint (dec);	1000	UV tag = decode_uint (dec);
		1001
		1002	WANT (1);
		1003
		1004	switch (tag)
		1005	{
		1006	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	1007	sv = decode_sv (dec);
		1008	break;
616		1009
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1010	case CBOR_TAG_INDIRECTION:
		1011	sv = newRV_noinc (decode_sv (dec));
		1012	break;
		1013
		1014	case CBOR_TAG_STRINGREF_NAMESPACE:
		1015	{
		1016	// do nmot use SAVETMPS/FREETMPS, as these will
		1017	// erase mortalised caches, e.g. "shareable"
		1018	ENTER;
		1019
		1020	SAVESPTR (dec->stringref);
		1021	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1022
		1023	sv = decode_sv (dec);
		1024
		1025	LEAVE;
		1026	}
		1027	break;
		1028
		1029	case CBOR_TAG_STRINGREF:
		1030	{
		1031	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1032	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1033
		1034	UV idx = decode_uint (dec);
		1035
		1036	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1037	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1038
		1039	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1040	}
		1041	break;
		1042
		1043	case CBOR_TAG_VALUE_SHAREABLE:
		1044	{
		1045	if (ecb_expect_false (!dec->shareable))
		1046	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1047
		1048	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1049	{
		1050	sv = newSV (0);
		1051	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1052
		1053	SV *osv = decode_sv (dec);
		1054	sv_setsv (sv, osv);
		1055	SvREFCNT_dec_NN (osv);
		1056	}
		1057	else
		1058	{
		1059	av_push (dec->shareable, &PL_sv_undef);
		1060	int idx = AvFILLp (dec->shareable);
		1061	sv = decode_sv (dec);
		1062	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1063	}
		1064	}
		1065	break;
		1066
		1067	case CBOR_TAG_VALUE_SHAREDREF:
		1068	{
		1069	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1070	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1071
		1072	UV idx = decode_uint (dec);
		1073
		1074	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1075	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1076
		1077	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1078
		1079	if (sv == &PL_sv_undef)
		1080	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1081	}
		1082	break;
		1083
		1084	case CBOR_TAG_PERL_OBJECT:
		1085	{
		1086	sv = decode_sv (dec);
		1087
		1088	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1089	ERR ("corrupted CBOR data (non-array perl object)");
		1090
		1091	AV *av = (AV *)SvRV (sv);
		1092	int len = av_len (av) + 1;
		1093	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1094
		1095	if (!stash)
		1096	ERR ("cannot decode perl-object (package does not exist)");
		1097
		1098	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1099
		1100	if (!method)
		1101	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1102
		1103	dSP;
		1104
		1105	ENTER; SAVETMPS;
		1106	PUSHMARK (SP);
		1107	EXTEND (SP, len + 1);
		1108	// we re-bless the reference to get overload and other niceties right
		1109	PUSHs (*av_fetch (av, 0, 1));
		1110	PUSHs (sv_cbor);
		1111
		1112	int i;
		1113
		1114	for (i = 1; i < len; ++i)
		1115	PUSHs (*av_fetch (av, i, 1));
		1116
		1117	PUTBACK;
		1118	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1119	SPAGAIN;
		1120
		1121	if (SvTRUE (ERRSV))
		1122	{
		1123	FREETMPS; LEAVE;
		1124	ERR_ERRSV;
		1125	}
		1126
		1127	SvREFCNT_dec (sv);
		1128	sv = SvREFCNT_inc (POPs);
		1129
		1130	PUTBACK;
		1131
		1132	FREETMPS; LEAVE;
		1133	}
		1134	break;
		1135
		1136	default:
		1137	{
		1138	SV *tag_sv = newSVuv (tag);
		1139
		1140	sv = decode_sv (dec);
		1141
		1142	dSP;
		1143	ENTER; SAVETMPS;
		1144	SAVESTACK_POS ();
		1145	PUSHMARK (SP);
		1146	EXTEND (SP, 2);
		1147	PUSHs (tag_sv);
		1148	PUSHs (sv);
		1149
		1150	PUTBACK;
		1151	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1152	SPAGAIN;
		1153
		1154	if (SvTRUE (ERRSV))
		1155	{
		1156	SvREFCNT_dec (tag_sv);
		1157	FREETMPS; LEAVE;
		1158	ERR_ERRSV;
		1159	}
		1160
		1161	if (count)
		1162	{
		1163	SvREFCNT_dec (tag_sv);
		1164	SvREFCNT_dec (sv);
		1165	sv = SvREFCNT_inc (POPs);
		1166	}
		1167	else
		1168	{
		1169	AV *av = newAV ();
		1170	av_push (av, tag_sv);
		1171	av_push (av, sv);
		1172
		1173	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1174	? cbor_tagged_stash
		1175	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1176	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1177	}
		1178
		1179	PUTBACK;
		1180
		1181	FREETMPS; LEAVE;
		1182	}
		1183	break;
		1184	}
		1185
618	return sv;	1186	return sv;
619		1187
620	AV *av = newAV ();	1188	fail:
621	av_push (av, newSVuv (tag));	1189	SvREFCNT_dec (sv);
622	av_push (av, sv);	1190	return &PL_sv_undef;
623	return newRV_noinc ((SV *)av);
624	}	1191	}
625		1192
626	static SV *	1193	static SV *
627	decode_sv (dec_t *dec)	1194	decode_sv (dec_t *dec)
628	{	1195	{
629	WANT (1);	1196	WANT (1);
630		1197
631	switch (*dec->cur >> 5)	1198	switch (*dec->cur >> MAJOR_SHIFT)
632	{	1199	{
633	case 0: // unsigned int	1200	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
634	return newSVuv (decode_uint (dec));	1201	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
635	case 1: // negative int	1202	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
636	return newSViv (-1 - (IV)decode_uint (dec));	1203	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
637	case 2: // octet string	1204	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
638	return decode_str (dec, 0);	1205	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
639	case 3: // utf-8 string	1206	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
640	return decode_str (dec, 1);	1207
641	case 4: // array	1208	case MAJOR_MISC >> MAJOR_SHIFT:
642	return decode_av (dec);
643	case 5: // map
644	return decode_hv (dec);
645	case 6: // tag
646	return decode_tagged (dec);
647	case 7: // misc
648	switch (*dec->cur++ & 31)	1209	switch (*dec->cur++ & MINOR_MASK)
649	{	1210	{
650	case 20:	1211	case SIMPLE_FALSE:
651	#if CBOR_SLOW	1212	#if CBOR_SLOW
652	cbor_false = get_bool ("CBOR::XS::false");	1213	types_false = get_bool ("Types::Serialiser::false");
653	#endif	1214	#endif
654	return newSVsv (cbor_false);	1215	return newSVsv (types_false);
655	case 21:	1216	case SIMPLE_TRUE:
656	#if CBOR_SLOW	1217	#if CBOR_SLOW
657	cbor_true = get_bool ("CBOR::XS::true");	1218	types_true = get_bool ("Types::Serialiser::true");
658	#endif	1219	#endif
659	return newSVsv (cbor_true);	1220	return newSVsv (types_true);
660	case 22:	1221	case SIMPLE_NULL:
661	return newSVsv (&PL_sv_undef);	1222	return newSVsv (&PL_sv_undef);
		1223	case SIMPLE_UNDEF:
		1224	#if CBOR_SLOW
		1225	types_error = get_bool ("Types::Serialiser::error");
		1226	#endif
		1227	return newSVsv (types_error);
662		1228
663	case 25:	1229	case MISC_FLOAT16:
664	{	1230	{
665	WANT (2);	1231	WANT (2);
666		1232
667	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1233	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
668	dec->cur += 2;	1234	dec->cur += 2;
669		1235
670	return newSVnv (ecb_binary16_to_float (fp));	1236	return newSVnv (ecb_binary16_to_float (fp));
671	}	1237	}
672		1238
673	case 26:	1239	case MISC_FLOAT32:
674	{	1240	{
675	uint32_t fp;	1241	uint32_t fp;
676	WANT (4);	1242	WANT (4);
677	memcpy (&fp, dec->cur, 4);	1243	memcpy (&fp, dec->cur, 4);
678	dec->cur += 4;	1244	dec->cur += 4;
…		…
681	fp = ecb_bswap32 (fp);	1247	fp = ecb_bswap32 (fp);
682		1248
683	return newSVnv (ecb_binary32_to_float (fp));	1249	return newSVnv (ecb_binary32_to_float (fp));
684	}	1250	}
685		1251
686	case 27:	1252	case MISC_FLOAT64:
687	{	1253	{
688	uint64_t fp;	1254	uint64_t fp;
689	WANT (8);	1255	WANT (8);
690	memcpy (&fp, dec->cur, 8);	1256	memcpy (&fp, dec->cur, 8);
691	dec->cur += 8;	1257	dec->cur += 8;
…		…
694	fp = ecb_bswap64 (fp);	1260	fp = ecb_bswap64 (fp);
695		1261
696	return newSVnv (ecb_binary64_to_double (fp));	1262	return newSVnv (ecb_binary64_to_double (fp));
697	}	1263	}
698		1264
699	// 0..19 unassigned	1265	// 0..19 unassigned simple
700	// 24 reserved + unassigned (reserved values are not encodable)	1266	// 24 reserved + unassigned simple (reserved values are not encodable)
		1267	// 28-30 unassigned misc
		1268	// 31 break code
701	default:	1269	default:
702	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1270	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
703	}	1271	}
704		1272
705	break;	1273	break;
706	}	1274	}
707		1275
…		…
710	}	1278	}
711		1279
712	static SV *	1280	static SV *
713	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1281	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
714	{	1282	{
715	dec_t dec;	1283	dec_t dec = { 0 };
716	SV *sv;	1284	SV *sv;
		1285	STRLEN len;
		1286	char *data = SvPVbyte (string, len);
717		1287
718	/* work around bugs in 5.10 where manipulating magic values
719	* makes perl ignore the magic in subsequent accesses.
720	* also make a copy of non-PV values, to get them into a clean
721	* state (SvPV should do that, but it's buggy, see below).
722	*/
723	/*SvGETMAGIC (string);*/
724	if (SvMAGICAL (string) || !SvPOK (string))
725	string = sv_2mortal (newSVsv (string));
726
727	SvUPGRADE (string, SVt_PV);
728
729	/* work around a bug in perl 5.10, which causes SvCUR to fail an
730	* assertion with -DDEBUGGING, although SvCUR is documented to
731	* return the xpv_cur field which certainly exists after upgrading.
732	* according to nicholas clark, calling SvPOK fixes this.
733	* But it doesn't fix it, so try another workaround, call SvPV_nolen
734	* and hope for the best.
735	* Damnit, SvPV_nolen still trips over yet another assertion. This
736	* assertion business is seriously broken, try yet another workaround
737	* for the broken -DDEBUGGING.
738	*/
739	{
740	#ifdef DEBUGGING
741	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
742	#else
743	STRLEN offset = SvCUR (string);
744	#endif
745
746	if (offset > cbor->max_size && cbor->max_size)	1288	if (len > cbor->max_size && cbor->max_size)
747	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1289	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
748	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1290	(unsigned long)len, (unsigned long)cbor->max_size);
749	}
750
751	sv_utf8_downgrade (string, 0);
752		1291
753	dec.cbor = *cbor;	1292	dec.cbor = *cbor;
754	dec.cur = (U8 *)SvPVX (string);	1293	dec.cur = (U8 *)data;
755	dec.end = (U8 *)SvEND (string);	1294	dec.end = (U8 *)data + len;
756	dec.err = 0;
757	dec.depth = 0;
758		1295
759	sv = decode_sv (&dec);	1296	sv = decode_sv (&dec);
760		1297
761	if (offset_return)	1298	if (offset_return)
762	*offset_return = dec.cur;	1299	*offset_return = dec.cur;
…		…
765	if (dec.cur != dec.end && !dec.err)	1302	if (dec.cur != dec.end && !dec.err)
766	dec.err = "garbage after CBOR object";	1303	dec.err = "garbage after CBOR object";
767		1304
768	if (dec.err)	1305	if (dec.err)
769	{	1306	{
		1307	if (dec.shareable)
		1308	{
		1309	// need to break cyclic links, which would all be in shareable
		1310	int i;
		1311	SV **svp;
		1312
		1313	for (i = av_len (dec.shareable) + 1; i--; )
		1314	if ((svp = av_fetch (dec.shareable, i, 0)))
		1315	sv_setsv (*svp, &PL_sv_undef);
		1316	}
		1317
770	SvREFCNT_dec (sv);	1318	SvREFCNT_dec (sv);
		1319
		1320	if (dec.err_sv)
		1321	sv_2mortal (dec.err_sv);
		1322
771	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1323	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
772	}	1324	}
773		1325
774	sv = sv_2mortal (sv);	1326	sv = sv_2mortal (sv);
775		1327
776	return sv;	1328	return sv;
777	}	1329	}
778		1330
		1331	/////////////////////////////////////////////////////////////////////////////
		1332	// incremental parser
		1333
		1334	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1335
		1336	// returns 0 for notyet, 1 for success or error
		1337	static int
		1338	incr_parse (CBOR *self, SV *cborstr)
		1339	{
		1340	STRLEN cur;
		1341	SvPV (cborstr, cur);
		1342
		1343	while (ecb_expect_true (self->incr_need <= cur))
		1344	{
		1345	// table of integer count bytes
		1346	static I8 incr_len[MINOR_MASK + 1] = {
		1347	0, 0, 0, 0, 0, 0, 0, 0,
		1348	0, 0, 0, 0, 0, 0, 0, 0,
		1349	0, 0, 0, 0, 0, 0, 0, 0,
		1350	1, 2, 4, 8,-1,-1,-1,-2
		1351	};
		1352
		1353	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1354	U8 m = *p & MINOR_MASK;
		1355	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1356	I8 ilen = incr_len[m];
		1357
		1358	self->incr_need = self->incr_pos + 1;
		1359
		1360	if (ecb_expect_false (ilen < 0))
		1361	{
		1362	if (m != MINOR_INDEF)
		1363	return 1; // error
		1364
		1365	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1366	{
		1367	if (count >= 0)
		1368	return 1; // error
		1369
		1370	count = 1;
		1371	}
		1372	else
		1373	{
		1374	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1375	count = -1;
		1376	}
		1377	}
		1378	else
		1379	{
		1380	self->incr_need += ilen;
		1381	if (ecb_expect_false (self->incr_need > cur))
		1382	return 0;
		1383
		1384	int major = *p >> MAJOR_SHIFT;
		1385
		1386	switch (major)
		1387	{
		1388	case MAJOR_TAG >> MAJOR_SHIFT:
		1389	++count; // tags merely prefix another value
		1390	break;
		1391
		1392	case MAJOR_BYTES >> MAJOR_SHIFT:
		1393	case MAJOR_TEXT >> MAJOR_SHIFT:
		1394	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1395	case MAJOR_MAP >> MAJOR_SHIFT:
		1396	{
		1397	UV len;
		1398
		1399	if (ecb_expect_false (ilen))
		1400	{
		1401	len = 0;
		1402
		1403	do {
		1404	len = (len << 8) | *++p;
		1405	} while (--ilen);
		1406	}
		1407	else
		1408	len = m;
		1409
		1410	switch (major)
		1411	{
		1412	case MAJOR_BYTES >> MAJOR_SHIFT:
		1413	case MAJOR_TEXT >> MAJOR_SHIFT:
		1414	self->incr_need += len;
		1415	if (ecb_expect_false (self->incr_need > cur))
		1416	return 0;
		1417
		1418	break;
		1419
		1420	case MAJOR_MAP >> MAJOR_SHIFT:
		1421	len <<= 1;
		1422	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1423	if (len)
		1424	{
		1425	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1426	count = len + 1;
		1427	}
		1428	break;
		1429	}
		1430	}
		1431	}
		1432	}
		1433
		1434	self->incr_pos = self->incr_need;
		1435
		1436	if (count > 0)
		1437	{
		1438	while (!--count)
		1439	{
		1440	if (!AvFILLp (self->incr_count))
		1441	return 1; // done
		1442
		1443	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1444	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1445	}
		1446
		1447	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1448	}
		1449	}
		1450
		1451	return 0;
		1452	}
		1453
		1454
779	/////////////////////////////////////////////////////////////////////////////	1455	/////////////////////////////////////////////////////////////////////////////
780	// XS interface functions	1456	// XS interface functions
781		1457
782	MODULE = CBOR::XS PACKAGE = CBOR::XS	1458	MODULE = CBOR::XS PACKAGE = CBOR::XS
783		1459
784	BOOT:	1460	BOOT:
785	{	1461	{
786	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1462	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
787	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
788	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1463	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
789		1464
790	cbor_true = get_bool ("CBOR::XS::true");	1465	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
791	cbor_false = get_bool ("CBOR::XS::false");	1466	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1467
		1468	types_true = get_bool ("Types::Serialiser::true" );
		1469	types_false = get_bool ("Types::Serialiser::false");
		1470	types_error = get_bool ("Types::Serialiser::error");
		1471
		1472	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1473
		1474	sv_cbor = newSVpv ("CBOR", 0);
		1475	SvREADONLY_on (sv_cbor);
		1476
		1477	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
792	}	1478	}
793		1479
794	PROTOTYPES: DISABLE	1480	PROTOTYPES: DISABLE
795		1481
796	void CLONE (...)	1482	void CLONE (...)
797	CODE:	1483	CODE:
798	cbor_stash = 0;	1484	cbor_stash = 0;
799	cbor_boolean_stash = 0;
800	cbor_tagged_stash = 0;	1485	cbor_tagged_stash = 0;
		1486	types_error_stash = 0;
		1487	types_boolean_stash = 0;
801		1488
802	void new (char *klass)	1489	void new (char *klass)
803	PPCODE:	1490	PPCODE:
804	{	1491	{
805	SV *pv = NEWSV (0, sizeof (CBOR));	1492	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
813		1500
814	void shrink (CBOR *self, int enable = 1)	1501	void shrink (CBOR *self, int enable = 1)
815	ALIAS:	1502	ALIAS:
816	shrink = F_SHRINK	1503	shrink = F_SHRINK
817	allow_unknown = F_ALLOW_UNKNOWN	1504	allow_unknown = F_ALLOW_UNKNOWN
		1505	allow_sharing = F_ALLOW_SHARING
		1506	allow_cycles = F_ALLOW_CYCLES
		1507	pack_strings = F_PACK_STRINGS
		1508	text_keys = F_TEXT_KEYS
		1509	text_strings = F_TEXT_STRINGS
		1510	validate_utf8 = F_VALIDATE_UTF8
818	PPCODE:	1511	PPCODE:
819	{	1512	{
820	if (enable)	1513	if (enable)
821	self->flags |= ix;	1514	self->flags |= ix;
822	else	1515	else
…		…
827		1520
828	void get_shrink (CBOR *self)	1521	void get_shrink (CBOR *self)
829	ALIAS:	1522	ALIAS:
830	get_shrink = F_SHRINK	1523	get_shrink = F_SHRINK
831	get_allow_unknown = F_ALLOW_UNKNOWN	1524	get_allow_unknown = F_ALLOW_UNKNOWN
		1525	get_allow_sharing = F_ALLOW_SHARING
		1526	get_allow_cycles = F_ALLOW_CYCLES
		1527	get_pack_strings = F_PACK_STRINGS
		1528	get_text_keys = F_TEXT_KEYS
		1529	get_text_strings = F_TEXT_STRINGS
		1530	get_validate_utf8 = F_VALIDATE_UTF8
832	PPCODE:	1531	PPCODE:
833	XPUSHs (boolSV (self->flags & ix));	1532	XPUSHs (boolSV (self->flags & ix));
834		1533
835	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1534	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
836	PPCODE:	1535	PPCODE:
…		…
852	CODE:	1551	CODE:
853	RETVAL = self->max_size;	1552	RETVAL = self->max_size;
854	OUTPUT:	1553	OUTPUT:
855	RETVAL	1554	RETVAL
856		1555
857	#if 0 //TODO	1556	void filter (CBOR *self, SV *filter = 0)
858
859	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
860	PPCODE:	1557	PPCODE:
861	{
862	SvREFCNT_dec (self->cb_object);	1558	SvREFCNT_dec (self->filter);
863	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1559	self->filter = filter ? newSVsv (filter) : filter;
864
865	XPUSHs (ST (0));	1560	XPUSHs (ST (0));
866	}
867		1561
868	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1562	SV *get_filter (CBOR *self)
869	PPCODE:	1563	CODE:
870	{	1564	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
871	if (!self->cb_sk_object)	1565	OUTPUT:
872	self->cb_sk_object = newHV ();	1566	RETVAL
873
874	if (SvOK (cb))
875	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
876	else
877	{
878	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
879
880	if (!HvKEYS (self->cb_sk_object))
881	{
882	SvREFCNT_dec (self->cb_sk_object);
883	self->cb_sk_object = 0;
884	}
885	}
886
887	XPUSHs (ST (0));
888	}
889
890	#endif
891		1567
892	void encode (CBOR *self, SV *scalar)	1568	void encode (CBOR *self, SV *scalar)
893	PPCODE:	1569	PPCODE:
894	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1570	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
895	XPUSHs (scalar);	1571	XPUSHs (scalar);
…		…
908	EXTEND (SP, 2);	1584	EXTEND (SP, 2);
909	PUSHs (sv);	1585	PUSHs (sv);
910	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1586	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
911	}	1587	}
912		1588
913	#if 0	1589	void incr_parse (CBOR *self, SV *cborstr)
		1590	ALIAS:
		1591	incr_parse_multiple = 1
		1592	PPCODE:
		1593	{
		1594	if (SvUTF8 (cborstr))
		1595	sv_utf8_downgrade (cborstr, 0);
		1596
		1597	if (!self->incr_count)
		1598	{
		1599	self->incr_count = newAV ();
		1600	self->incr_pos = 0;
		1601	self->incr_need = 1;
		1602
		1603	av_push (self->incr_count, newSViv (1));
		1604	}
		1605
		1606	do
		1607	{
		1608	if (!incr_parse (self, cborstr))
		1609	{
		1610	if (self->incr_need > self->max_size && self->max_size)
		1611	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1612	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1613
		1614	break;
		1615	}
		1616
		1617	SV *sv;
		1618	char *offset;
		1619
		1620	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1621	XPUSHs (sv);
		1622
		1623	sv_chop (cborstr, offset);
		1624
		1625	av_clear (self->incr_count);
		1626	av_push (self->incr_count, newSViv (1));
		1627
		1628	self->incr_pos = 0;
		1629	self->incr_need = self->incr_pos + 1;
		1630	}
		1631	while (ix);
		1632	}
		1633
		1634	void incr_reset (CBOR *self)
		1635	CODE:
		1636	{
		1637	SvREFCNT_dec (self->incr_count);
		1638	self->incr_count = 0;
		1639	}
914		1640
915	void DESTROY (CBOR *self)	1641	void DESTROY (CBOR *self)
916	CODE:	1642	PPCODE:
917	SvREFCNT_dec (self->cb_sk_object);	1643	cbor_free (self);
918	SvREFCNT_dec (self->cb_object);
919
920	#endif
921		1644
922	PROTOTYPES: ENABLE	1645	PROTOTYPES: ENABLE
923		1646
924	void encode_cbor (SV *scalar)	1647	void encode_cbor (SV *scalar)
		1648	ALIAS:
		1649	encode_cbor = 0
		1650	encode_cbor_sharing = F_ALLOW_SHARING
925	PPCODE:	1651	PPCODE:
926	{	1652	{
927	CBOR cbor;	1653	CBOR cbor;
928	cbor_init (&cbor);	1654	cbor_init (&cbor);
		1655	cbor.flags |= ix;
929	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1656	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
930	XPUSHs (scalar);	1657	XPUSHs (scalar);
931	}	1658	}
932		1659
933	void decode_cbor (SV *cborstr)	1660	void decode_cbor (SV *cborstr)

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