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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.13 by root, Mon Oct 28 22:50:50 2013 UTC vs.
Revision 1.60 by root, Sat Nov 26 00:47:02 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"
		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	};
13		65
14	// known tags	66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
17	// inofficial extensions (pending iana registration)	69	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	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
20		77
21	// rfc7049	78	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
28		85
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		90
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		96
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	98	};
42		99
43	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
44	#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_FORBID_OBJECTS 0x00000010UL
		105	#define F_PACK_STRINGS 0x00000020UL
		106	#define F_TEXT_KEYS 0x00000040UL
		107	#define F_TEXT_STRINGS 0x00000080UL
		108	#define F_VALIDATE_UTF8 0x00000100UL
45		109
46	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
47		111
48	#define SB do {	112	#define SB do {
49	#define SE } while (0)	113	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
63	#endif	127	#endif
64		128
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	129	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error, *sv_cbor;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		131
68	typedef struct {	132	typedef struct {
69	U32 flags;	133	U32 flags;
70	U32 max_depth;	134	U32 max_depth;
71	STRLEN max_size;	135	STRLEN max_size;
		136	SV *filter;
		137
		138	// for the incremental parser
		139	STRLEN incr_pos; // the current offset into the text
		140	STRLEN incr_need; // minimum bytes needed to decode
		141	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	142	} CBOR;
73		143
74	ecb_inline void	144	ecb_inline void
75	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
76	{	146	{
77	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	148	cbor->max_depth = 512;
		149	}
		150
		151	ecb_inline void
		152	cbor_free (CBOR *cbor)
		153	{
		154	SvREFCNT_dec (cbor->filter);
		155	SvREFCNT_dec (cbor->incr_count);
79	}	156	}
80		157
81	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	159	// utility functions
83		160
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	183	#endif
107	}	184	}
108	}	185	}
109		186
110	/////////////////////////////////////////////////////////////////////////////	187	// minimum length of a string to be registered for stringref
111	// fp hell	188	ecb_inline int
112		189	minimum_string_length (UV idx)
113	//TODO	190	{
		191	return idx > 23
		192	? idx > 0xffU
		193	? idx > 0xffffU
		194	? idx > 0xffffffffU
		195	? 11
		196	: 7
		197	: 5
		198	: 4
		199	: 3;
		200	}
114		201
115	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
116	// encoder	203	// encoder
117		204
118	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
123	SV *sv; // result scalar	210	SV *sv; // result scalar
124	CBOR cbor;	211	CBOR cbor;
125	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
126	} enc_t;	217	} enc_t;
127		218
128	ecb_inline void	219	ecb_inline void
129	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
130	{	221	{
…		…
147	static void	238	static void
148	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
149	{	240	{
150	need (enc, 9);	241	need (enc, 9);
151		242
152	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
154	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
155	{	246	{
156	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	248	*enc->cur++ = len;
158	}	249	}
159	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
160	{	251	{
161	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	254	*enc->cur++ = len;
164	}	255	}
165	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
166	{	257	{
167	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	262	*enc->cur++ = len;
172	}	263	}
173	else	264	else
174	{	265	{
175	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	274	*enc->cur++ = len;
184	}	275	}
185	}	276	}
186		277
187	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	287	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	318	need (enc, len);
192	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
193	enc->cur += len;	320	enc->cur += len;
194	}	321	}
195		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
196	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
197		349
198	static void	350	static void
199	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
200	{	352	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
205		357
206	++enc->depth;	358	++enc->depth;
207		359
208	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		361
		362	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
211	{	364	{
212	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
215		374
216	--enc->depth;	375	--enc->depth;
217	}	376	}
218		377
219	static void	378	static void
…		…
228		387
229	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
231		390
232	if (mg)	391	if (mg)
233	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	393	else
235	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
236		395
237	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
238	{	397	{
239	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
241	else	400	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		402
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	404	}
246		405
247	if (mg)	406	if (mg)
248	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		408
250	--enc->depth;	409	--enc->depth;
251	}	410	}
252		411
253	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
254	static void	413	static void
255	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
256	{	415	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
260	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
261		419
262	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
263	{	421	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	423	? types_boolean_stash
…		…
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	429	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		431
274	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
275	GV *method;
276		433
277	if (stash == boolean_stash)	434	if (stash == boolean_stash)
278	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
279	else if (stash == error_stash)	439	else if (stash == error_stash)
280	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
281	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
282	{	445	{
283	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
284	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
285		448
286	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
287	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (!enc->shareable)
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
288	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
289	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
290	{	487	{
291	dSP;	488	dSP;
292		489
293	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
294	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
295	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
296		494
297	PUTBACK;	495	PUTBACK;
298	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
311	}	509	}
312	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
313	{	511	{
314	dSP;	512	dSP;
315		513
316	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
317	EXTEND (SP, 2);	517	EXTEND (SP, 2);
318	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
319	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
320	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
321		521
…		…
325		525
326	// catch this surprisingly common error	526	// catch this surprisingly common error
327	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
328	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
329		529
330	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
331	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
332	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
333		533
334	while (count)	534	while (count)
335	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
336		536
337	PUTBACK;	537	PUTBACK;
…		…
344	}	544	}
345	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
346	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
347	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
348	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
349	else if (svt < SVt_PVAV)
350	{
351	STRLEN len = 0;
352	char *pv = svt ? SvPV (sv, len) : 0;
353
354	if (len == 1 && *pv == '1')
355	encode_ch (enc, 0xe0 | 21);
356	else if (len == 1 && *pv == '0')
357	encode_ch (enc, 0xe0 | 20);
358	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
359	encode_ch (enc, 0xe0 | 23);
360	else
361	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
362	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
363	}
364	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
365	encode_ch (enc, 0xe0 | 23);
366	else	549	else
367	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
368	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
369	}	554	}
370		555
371	static void	556	static void
372	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
373	{	558	{
374	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
375		560
376	need (enc, 9);	561	need (enc, 9);
377		562
378	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
379	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
380	//TODO: maybe I32?	565	//TODO: maybe I32?
381	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
382	{	567	{
383	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
384		569
385	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
386		571
387	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
388	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
389		574
390	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
392	}	577	}
393	else	578	else
394	{	579	{
395	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
396		581
397	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
398		583
399	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
400	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
401		586
402	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
411		596
412	if (SvPOKp (sv))	597	if (SvPOKp (sv))
413	{	598	{
414	STRLEN len;	599	STRLEN len;
415	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
416	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
417	}	602	}
418	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
419	encode_nv (enc, sv);	604	encode_nv (enc, sv);
420	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
421	{	606	{
422	if (SvIsUV (sv))	607	if (SvIsUV (sv))
423	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
424	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
425	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
426	else	611	else
427	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
428	}	613	}
429	else if (SvROK (sv))	614	else if (SvROK (sv))
430	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
431	else if (!SvOK (sv))	616	else if (!SvOK (sv))
432	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
433	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
434	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
435	else	620	else
436	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
437	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
438	}	623	}
439		624
440	static SV *	625	static SV *
441	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
442	{	627	{
443	enc_t enc;	628	enc_t enc = { 0 };
444		629
445	enc.cbor = *cbor;	630	enc.cbor = *cbor;
446	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
447	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
448	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
449	enc.depth = 0;
450		634
451	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
452	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
453		645
454	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
455	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
456		648
…		…
470	U8 *end; // end of input string	662	U8 *end; // end of input string
471	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
472	CBOR cbor;	664	CBOR cbor;
473	U32 depth; // recursion depth	665	U32 depth; // recursion depth
474	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
		667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
475	} dec_t;	671	} dec_t;
476		672
477	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
478		680
479	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
480		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	ecb_cold static void
		704	err_nesting_exceeded (dec_t *dec)
		705	{
		706	err_set (dec, ERR_NESTING_EXCEEDED);
		707	}
		708
		709	#define ERR_DO(do) SB do; goto fail; SE
		710	#define ERR(reason) ERR_DO (err_set (dec, reason))
		711	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		712
		713	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		714
481	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	715	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
482	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
483		717
484	static UV	718	static UV
485	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
486	{	720	{
487	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
488	{	722	++dec->cur;
489	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
490	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
491	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
492	return *dec->cur++ & 31;
493		723
494	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
495	WANT (2);	728	WANT (1);
496	dec->cur += 2;	729	dec->cur += 1;
497	return dec->cur[-1];	730	return dec->cur[-1];
498		731	}
499	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
500	WANT (3);	734	WANT (2);
501	dec->cur += 3;	735	dec->cur += 2;
502	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
503	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
504		738	}
505	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
506	WANT (5);	741	WANT (4);
507	dec->cur += 5;	742	dec->cur += 4;
508	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
509	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
510	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
511	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
512		747	}
513	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
514	WANT (9);	750	WANT (8);
515	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
516	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
517	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
518	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
519	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
520	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
521	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
522	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
523	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
524		766	}
525	default:	767	else
526	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
527	}
528		769
529	fail:	770	fail:
530	return 0;	771	return 0;
531	}	772	}
532		773
…		…
537	{	778	{
538	AV *av = newAV ();	779	AV *av = newAV ();
539		780
540	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
541		782
542	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
543	{	784	{
544	++dec->cur;	785	++dec->cur;
545		786
546	for (;;)	787	for (;;)
547	{	788	{
548	WANT (1);	789	WANT (1);
549		790
550	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
551	{	792	{
552	++dec->cur;	793	++dec->cur;
553	break;	794	break;
554	}	795	}
555		796
556	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
557	}	798	}
558	}	799	}
559	else	800	else
560	{	801	{
561	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
562		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
563	av_fill (av, len - 1);	805	av_fill (av, len - 1);
564		806
565	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
566	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
567	}	809	}
…		…
573	SvREFCNT_dec (av);	815	SvREFCNT_dec (av);
574	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
575	return &PL_sv_undef;	817	return &PL_sv_undef;
576	}	818	}
577		819
		820	static void
		821	decode_he (dec_t *dec, HV *hv)
		822	{
		823	// for speed reasons, we specialcase single-string
		824	// byte or utf-8 strings as keys, but only when !stringref
		825
		826	if (ecb_expect_true (!dec->stringref))
		827	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		828	{
		829	STRLEN len = decode_uint (dec);
		830	char *key = (char *)dec->cur;
		831
		832	WANT (len);
		833	dec->cur += len;
		834
		835	hv_store (hv, key, len, decode_sv (dec), 0);
		836
		837	return;
		838	}
		839	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		840	{
		841	STRLEN len = decode_uint (dec);
		842	char *key = (char *)dec->cur;
		843
		844	WANT (len);
		845	dec->cur += len;
		846
		847	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		848	if (!is_utf8_string (key, len))
		849	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		850
		851	hv_store (hv, key, -len, decode_sv (dec), 0);
		852
		853	return;
		854	}
		855
		856	SV *k = decode_sv (dec);
		857	SV *v = decode_sv (dec);
		858
		859	// we leak memory if uncaught exceptions are thrown by random magical
		860	// methods, and this is hopefully the only place where it can happen,
		861	// so if there is a chance of an exception, take the very slow path.
		862	// since catching exceptions is "undocumented/internal/forbidden" by
		863	// the new p5p powers, we need to call out to a perl function :/
		864	if (ecb_expect_false (SvAMAGIC (k)))
		865	{
		866	dSP;
		867
		868	ENTER; SAVETMPS;
		869	PUSHMARK (SP);
		870	EXTEND (SP, 3);
		871	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		872	PUSHs (sv_2mortal (k));
		873	PUSHs (sv_2mortal (v));
		874
		875	PUTBACK;
		876	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		877	SPAGAIN;
		878
		879	FREETMPS; LEAVE;
		880
		881	if (SvTRUE (ERRSV))
		882	ERR_ERRSV;
		883
		884	return;
		885	}
		886
		887	hv_store_ent (hv, k, v, 0);
		888	SvREFCNT_dec (k);
		889
		890	fail:
		891	;
		892	}
		893
578	static SV *	894	static SV *
579	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
580	{	896	{
581	HV *hv = newHV ();	897	HV *hv = newHV ();
582		898
583	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
584		900
585	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
586	{	902	{
587	++dec->cur;	903	++dec->cur;
588		904
589	for (;;)	905	for (;;)
590	{	906	{
591	WANT (1);	907	WANT (1);
592		908
593	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
594	{	910	{
595	++dec->cur;	911	++dec->cur;
596	break;	912	break;
597	}	913	}
598		914
599	SV *k = decode_sv (dec);	915	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	SvREFCNT_dec (k);
604	}	916	}
605	}	917	}
606	else	918	else
607	{	919	{
608	int len = decode_uint (dec);	920	UV pairs = decode_uint (dec);
609		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		923
610	while (len--)	924	while (pairs--)
611	{	925	decode_he (dec, hv);
612	SV *k = decode_sv (dec);
613	SV *v = decode_sv (dec);
614
615	hv_store_ent (hv, k, v, 0);
616	SvREFCNT_dec (k);
617	}
618	}	926	}
619		927
620	DEC_DEC_DEPTH;	928	DEC_DEC_DEPTH;
621	return newRV_noinc ((SV *)hv);	929	return newRV_noinc ((SV *)hv);
622		930
…		…
629	static SV *	937	static SV *
630	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
631	{	939	{
632	SV *sv = 0;	940	SV *sv = 0;
633		941
634	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
635	{	943	{
		944	// indefinite length strings
636	++dec->cur;	945	++dec->cur;
637		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
638	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
639		950
640	// not very fast, and certainly not robust against illegal input
641	for (;;)	951	for (;;)
642	{	952	{
643	WANT (1);	953	WANT (1);
644		954
645	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
646	{	957	{
647	++dec->cur;	958	++dec->cur;
648	break;	959	break;
649	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
650		963
651	sv_catsv (sv, decode_sv (dec));	964	STRLEN len = decode_uint (dec);
		965
		966	WANT (len);
		967	sv_catpvn (sv, dec->cur, len);
		968	dec->cur += len;
652	}	969	}
653	}	970	}
654	else	971	else
655	{	972	{
656	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
657		974
658	WANT (len);	975	WANT (len);
659	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
660	dec->cur += len;	977	dec->cur += len;
		978
		979	if (ecb_expect_false (dec->stringref)
		980	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		981	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
661	}	982	}
662		983
663	if (utf8)	984	if (utf8)
		985	{
		986	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		987	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		988	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		989
664	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
665		992
666	return sv;	993	return sv;
667		994
668	fail:	995	fail:
669	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
671	}	998	}
672		999
673	static SV *	1000	static SV *
674	decode_tagged (dec_t *dec)	1001	decode_tagged (dec_t *dec)
675	{	1002	{
		1003	SV *sv = 0;
676	UV tag = decode_uint (dec);	1004	UV tag = decode_uint (dec);
		1005
		1006	WANT (1);
		1007
		1008	switch (tag)
		1009	{
		1010	case CBOR_TAG_MAGIC:
677	SV *sv = decode_sv (dec);	1011	sv = decode_sv (dec);
		1012	break;
678		1013
679	if (tag == CBOR_TAG_MAGIC)	1014	case CBOR_TAG_INDIRECTION:
680	return sv;	1015	sv = newRV_noinc (decode_sv (dec));
681	else if (tag == CBOR_TAG_PERL_OBJECT)	1016	break;
682	{	1017
		1018	case CBOR_TAG_STRINGREF_NAMESPACE:
		1019	{
		1020	// do nmot use SAVETMPS/FREETMPS, as these will
		1021	// erase mortalised caches, e.g. "shareable"
		1022	ENTER;
		1023
		1024	SAVESPTR (dec->stringref);
		1025	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1026
		1027	sv = decode_sv (dec);
		1028
		1029	LEAVE;
		1030	}
		1031	break;
		1032
		1033	case CBOR_TAG_STRINGREF:
		1034	{
		1035	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1036	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1037
		1038	UV idx = decode_uint (dec);
		1039
		1040	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1041	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1042
		1043	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1044	}
		1045	break;
		1046
		1047	case CBOR_TAG_VALUE_SHAREABLE:
		1048	{
		1049	if (ecb_expect_false (!dec->shareable))
		1050	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1051
		1052	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1053	{
		1054	sv = newSV (0);
		1055	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1056
		1057	SV *osv = decode_sv (dec);
		1058	sv_setsv (sv, osv);
		1059	SvREFCNT_dec_NN (osv);
		1060	}
		1061	else
		1062	{
		1063	av_push (dec->shareable, &PL_sv_undef);
		1064	int idx = AvFILLp (dec->shareable);
		1065	sv = decode_sv (dec);
		1066	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1067	}
		1068	}
		1069	break;
		1070
		1071	case CBOR_TAG_VALUE_SHAREDREF:
		1072	{
		1073	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1074	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1075
		1076	UV idx = decode_uint (dec);
		1077
		1078	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1079	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1080
		1081	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1082
		1083	if (sv == &PL_sv_undef)
		1084	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1085	}
		1086	break;
		1087
		1088	case CBOR_TAG_PERL_OBJECT:
		1089	{
		1090	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1091	goto filter;
		1092
		1093	sv = decode_sv (dec);
		1094
683	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
684	ERR ("corrupted CBOR data (non-array perl object)");	1096	ERR ("corrupted CBOR data (non-array perl object)");
685		1097
686	AV *av = (AV *)SvRV (sv);	1098	AV *av = (AV *)SvRV (sv);
687	int len = av_len (av) + 1;	1099	int len = av_len (av) + 1;
688	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1100	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
689		1101
690	if (!stash)	1102	if (!stash)
691	ERR ("cannot decode perl-object (package does not exist)");	1103	ERR ("cannot decode perl-object (package does not exist)");
692		1104
693	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1105	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
694		1106
695	if (!method)	1107	if (!method)
696	ERR ("cannot decode perl-object (package does not have a THAW method)");	1108	ERR ("cannot decode perl-object (package does not have a THAW method)");
697		1109
698	dSP;	1110	dSP;
699		1111
700	ENTER; SAVETMPS; PUSHMARK (SP);	1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
701	EXTEND (SP, len + 1);	1114	EXTEND (SP, len + 1);
702	// we re-bless the reference to get overload and other niceties right	1115	// we re-bless the reference to get overload and other niceties right
703	PUSHs (*av_fetch (av, 0, 1));	1116	PUSHs (*av_fetch (av, 0, 1));
704	PUSHs (sv_cbor);	1117	PUSHs (sv_cbor);
705		1118
706	int i;	1119	int i;
707		1120
708	for (i = 1; i < len; ++i)	1121	for (i = 1; i < len; ++i)
709	PUSHs (*av_fetch (av, i, 1));	1122	PUSHs (*av_fetch (av, i, 1));
710		1123
711	PUTBACK;	1124	PUTBACK;
712	call_sv ((SV *)GvCV (method), G_SCALAR);	1125	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
713	SPAGAIN;	1126	SPAGAIN;
714		1127
		1128	if (SvTRUE (ERRSV))
		1129	{
		1130	FREETMPS; LEAVE;
		1131	ERR_ERRSV;
		1132	}
		1133
715	SvREFCNT_dec (sv);	1134	SvREFCNT_dec (sv);
716	sv = SvREFCNT_inc (POPs);	1135	sv = SvREFCNT_inc (POPs);
717		1136
718	PUTBACK;	1137	PUTBACK;
719		1138
720	FREETMPS; LEAVE;	1139	FREETMPS; LEAVE;
		1140	}
		1141	break;
721		1142
722	return sv;	1143	default:
723	}	1144	filter:
724	else	1145	{
725	{	1146	SV *tag_sv = newSVuv (tag);
		1147
		1148	sv = decode_sv (dec);
		1149
		1150	dSP;
		1151	ENTER; SAVETMPS;
		1152	SAVESTACK_POS ();
		1153	PUSHMARK (SP);
		1154	EXTEND (SP, 2);
		1155	PUSHs (tag_sv);
		1156	PUSHs (sv);
		1157
		1158	PUTBACK;
		1159	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1160	SPAGAIN;
		1161
		1162	if (SvTRUE (ERRSV))
		1163	{
		1164	SvREFCNT_dec (tag_sv);
		1165	FREETMPS; LEAVE;
		1166	ERR_ERRSV;
		1167	}
		1168
		1169	if (count)
		1170	{
		1171	SvREFCNT_dec (tag_sv);
		1172	SvREFCNT_dec (sv);
		1173	sv = SvREFCNT_inc (POPs);
		1174	}
		1175	else
		1176	{
726	AV *av = newAV ();	1177	AV *av = newAV ();
727	av_push (av, newSVuv (tag));	1178	av_push (av, tag_sv);
728	av_push (av, sv);	1179	av_push (av, sv);
729		1180
730	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
731	? cbor_tagged_stash	1182	? cbor_tagged_stash
732	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
733
734	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
		1190	}
		1191	break;
735	}	1192	}
		1193
		1194	return sv;
736		1195
737	fail:	1196	fail:
738	SvREFCNT_dec (sv);	1197	SvREFCNT_dec (sv);
739	return &PL_sv_undef;	1198	return &PL_sv_undef;
740	}	1199	}
…		…
742	static SV *	1201	static SV *
743	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
744	{	1203	{
745	WANT (1);	1204	WANT (1);
746		1205
747	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
748	{	1207	{
749	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
750	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
751	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
752	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
753	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
754	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
755	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
756	return decode_str (dec, 1);	1215
757	case 4: // array	1216	case MAJOR_MISC >> MAJOR_SHIFT:
758	return decode_av (dec);
759	case 5: // map
760	return decode_hv (dec);
761	case 6: // tag
762	return decode_tagged (dec);
763	case 7: // misc
764	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
765	{	1218	{
766	case 20:	1219	case SIMPLE_FALSE:
767	#if CBOR_SLOW	1220	#if CBOR_SLOW
768	types_false = get_bool ("Types::Serialiser::false");	1221	types_false = get_bool ("Types::Serialiser::false");
769	#endif	1222	#endif
770	return newSVsv (types_false);	1223	return newSVsv (types_false);
771	case 21:	1224	case SIMPLE_TRUE:
772	#if CBOR_SLOW	1225	#if CBOR_SLOW
773	types_true = get_bool ("Types::Serialiser::true");	1226	types_true = get_bool ("Types::Serialiser::true");
774	#endif	1227	#endif
775	return newSVsv (types_true);	1228	return newSVsv (types_true);
776	case 22:	1229	case SIMPLE_NULL:
777	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
778	case 23:	1231	case SIMPLE_UNDEF:
779	#if CBOR_SLOW	1232	#if CBOR_SLOW
780	types_error = get_bool ("Types::Serialiser::error");	1233	types_error = get_bool ("Types::Serialiser::error");
781	#endif	1234	#endif
782	return newSVsv (types_error);	1235	return newSVsv (types_error);
783		1236
784	case 25:	1237	case MISC_FLOAT16:
785	{	1238	{
786	WANT (2);	1239	WANT (2);
787		1240
788	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
789	dec->cur += 2;	1242	dec->cur += 2;
790		1243
791	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
792	}	1245	}
793		1246
794	case 26:	1247	case MISC_FLOAT32:
795	{	1248	{
796	uint32_t fp;	1249	uint32_t fp;
797	WANT (4);	1250	WANT (4);
798	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
799	dec->cur += 4;	1252	dec->cur += 4;
…		…
802	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
803		1256
804	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
805	}	1258	}
806		1259
807	case 27:	1260	case MISC_FLOAT64:
808	{	1261	{
809	uint64_t fp;	1262	uint64_t fp;
810	WANT (8);	1263	WANT (8);
811	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
812	dec->cur += 8;	1265	dec->cur += 8;
…		…
815	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
816		1269
817	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
818	}	1271	}
819		1272
820	// 0..19 unassigned	1273	// 0..19 unassigned simple
821	// 24 reserved + unassigned (reserved values are not encodable)	1274	// 24 reserved + unassigned simple (reserved values are not encodable)
		1275	// 28-30 unassigned misc
		1276	// 31 break code
822	default:	1277	default:
823	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
824	}	1279	}
825		1280
826	break;	1281	break;
827	}	1282	}
828		1283
…		…
831	}	1286	}
832		1287
833	static SV *	1288	static SV *
834	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
835	{	1290	{
836	dec_t dec;	1291	dec_t dec = { 0 };
837	SV *sv;	1292	SV *sv;
		1293	STRLEN len;
		1294	char *data = SvPVbyte (string, len);
838		1295
839	/* work around bugs in 5.10 where manipulating magic values
840	* makes perl ignore the magic in subsequent accesses.
841	* also make a copy of non-PV values, to get them into a clean
842	* state (SvPV should do that, but it's buggy, see below).
843	*/
844	/*SvGETMAGIC (string);*/
845	if (SvMAGICAL (string) || !SvPOK (string))
846	string = sv_2mortal (newSVsv (string));
847
848	SvUPGRADE (string, SVt_PV);
849
850	/* work around a bug in perl 5.10, which causes SvCUR to fail an
851	* assertion with -DDEBUGGING, although SvCUR is documented to
852	* return the xpv_cur field which certainly exists after upgrading.
853	* according to nicholas clark, calling SvPOK fixes this.
854	* But it doesn't fix it, so try another workaround, call SvPV_nolen
855	* and hope for the best.
856	* Damnit, SvPV_nolen still trips over yet another assertion. This
857	* assertion business is seriously broken, try yet another workaround
858	* for the broken -DDEBUGGING.
859	*/
860	{
861	#ifdef DEBUGGING
862	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
863	#else
864	STRLEN offset = SvCUR (string);
865	#endif
866
867	if (offset > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
868	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1297	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
869	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1298	(unsigned long)len, (unsigned long)cbor->max_size);
870	}
871
872	sv_utf8_downgrade (string, 0);
873		1299
874	dec.cbor = *cbor;	1300	dec.cbor = *cbor;
875	dec.cur = (U8 *)SvPVX (string);	1301	dec.cur = (U8 *)data;
876	dec.end = (U8 *)SvEND (string);	1302	dec.end = (U8 *)data + len;
877	dec.err = 0;
878	dec.depth = 0;
879		1303
880	sv = decode_sv (&dec);	1304	sv = decode_sv (&dec);
881		1305
882	if (offset_return)	1306	if (offset_return)
883	*offset_return = dec.cur;	1307	*offset_return = dec.cur;
…		…
886	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
887	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
888		1312
889	if (dec.err)	1313	if (dec.err)
890	{	1314	{
		1315	if (dec.shareable)
		1316	{
		1317	// need to break cyclic links, which would all be in shareable
		1318	int i;
		1319	SV **svp;
		1320
		1321	for (i = av_len (dec.shareable) + 1; i--; )
		1322	if ((svp = av_fetch (dec.shareable, i, 0)))
		1323	sv_setsv (*svp, &PL_sv_undef);
		1324	}
		1325
891	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
892	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1331	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
893	}	1332	}
894		1333
895	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
896		1335
897	return sv;	1336	return sv;
898	}	1337	}
899		1338
		1339	/////////////////////////////////////////////////////////////////////////////
		1340	// incremental parser
		1341
		1342	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1343
		1344	// returns 0 for notyet, 1 for success or error
		1345	static int
		1346	incr_parse (CBOR *self, SV *cborstr)
		1347	{
		1348	STRLEN cur;
		1349	SvPV (cborstr, cur);
		1350
		1351	while (ecb_expect_true (self->incr_need <= cur))
		1352	{
		1353	// table of integer count bytes
		1354	static I8 incr_len[MINOR_MASK + 1] = {
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	0, 0, 0, 0, 0, 0, 0, 0,
		1358	1, 2, 4, 8,-1,-1,-1,-2
		1359	};
		1360
		1361	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1362	U8 m = *p & MINOR_MASK;
		1363	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1364	I8 ilen = incr_len[m];
		1365
		1366	self->incr_need = self->incr_pos + 1;
		1367
		1368	if (ecb_expect_false (ilen < 0))
		1369	{
		1370	if (m != MINOR_INDEF)
		1371	return 1; // error
		1372
		1373	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1374	{
		1375	if (count >= 0)
		1376	return 1; // error
		1377
		1378	count = 1;
		1379	}
		1380	else
		1381	{
		1382	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1383	count = -1;
		1384	}
		1385	}
		1386	else
		1387	{
		1388	self->incr_need += ilen;
		1389	if (ecb_expect_false (self->incr_need > cur))
		1390	return 0;
		1391
		1392	int major = *p >> MAJOR_SHIFT;
		1393
		1394	switch (major)
		1395	{
		1396	case MAJOR_TAG >> MAJOR_SHIFT:
		1397	++count; // tags merely prefix another value
		1398	break;
		1399
		1400	case MAJOR_BYTES >> MAJOR_SHIFT:
		1401	case MAJOR_TEXT >> MAJOR_SHIFT:
		1402	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1403	case MAJOR_MAP >> MAJOR_SHIFT:
		1404	{
		1405	UV len;
		1406
		1407	if (ecb_expect_false (ilen))
		1408	{
		1409	len = 0;
		1410
		1411	do {
		1412	len = (len << 8) | *++p;
		1413	} while (--ilen);
		1414	}
		1415	else
		1416	len = m;
		1417
		1418	switch (major)
		1419	{
		1420	case MAJOR_BYTES >> MAJOR_SHIFT:
		1421	case MAJOR_TEXT >> MAJOR_SHIFT:
		1422	self->incr_need += len;
		1423	if (ecb_expect_false (self->incr_need > cur))
		1424	return 0;
		1425
		1426	break;
		1427
		1428	case MAJOR_MAP >> MAJOR_SHIFT:
		1429	len <<= 1;
		1430	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1431	if (len)
		1432	{
		1433	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1434	count = len + 1;
		1435	}
		1436	break;
		1437	}
		1438	}
		1439	}
		1440	}
		1441
		1442	self->incr_pos = self->incr_need;
		1443
		1444	if (count > 0)
		1445	{
		1446	while (!--count)
		1447	{
		1448	if (!AvFILLp (self->incr_count))
		1449	return 1; // done
		1450
		1451	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1452	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1453	}
		1454
		1455	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1456	}
		1457	}
		1458
		1459	return 0;
		1460	}
		1461
		1462
900	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
901	// XS interface functions	1464	// XS interface functions
902		1465
903	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
904		1467
…		…
912		1475
913	types_true = get_bool ("Types::Serialiser::true" );	1476	types_true = get_bool ("Types::Serialiser::true" );
914	types_false = get_bool ("Types::Serialiser::false");	1477	types_false = get_bool ("Types::Serialiser::false");
915	types_error = get_bool ("Types::Serialiser::error");	1478	types_error = get_bool ("Types::Serialiser::error");
916		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
917	sv_cbor = newSVpv ("CBOR", 0);	1482	sv_cbor = newSVpv ("CBOR", 0);
918	SvREADONLY_on (sv_cbor);	1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
919	}	1486	}
920		1487
921	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
922		1489
923	void CLONE (...)	1490	void CLONE (...)
…		…
941		1508
942	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
943	ALIAS:	1510	ALIAS:
944	shrink = F_SHRINK	1511	shrink = F_SHRINK
945	allow_unknown = F_ALLOW_UNKNOWN	1512	allow_unknown = F_ALLOW_UNKNOWN
		1513	allow_sharing = F_ALLOW_SHARING
		1514	allow_cycles = F_ALLOW_CYCLES
		1515	forbid_objects = F_FORBID_OBJECTS
		1516	pack_strings = F_PACK_STRINGS
		1517	text_keys = F_TEXT_KEYS
		1518	text_strings = F_TEXT_STRINGS
		1519	validate_utf8 = F_VALIDATE_UTF8
946	PPCODE:	1520	PPCODE:
947	{	1521	{
948	if (enable)	1522	if (enable)
949	self->flags |= ix;	1523	self->flags |= ix;
950	else	1524	else
…		…
955		1529
956	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
957	ALIAS:	1531	ALIAS:
958	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
959	get_allow_unknown = F_ALLOW_UNKNOWN	1533	get_allow_unknown = F_ALLOW_UNKNOWN
		1534	get_allow_sharing = F_ALLOW_SHARING
		1535	get_allow_cycles = F_ALLOW_CYCLES
		1536	get_forbid_objects = F_FORBID_OBJECTS
		1537	get_pack_strings = F_PACK_STRINGS
		1538	get_text_keys = F_TEXT_KEYS
		1539	get_text_strings = F_TEXT_STRINGS
		1540	get_validate_utf8 = F_VALIDATE_UTF8
960	PPCODE:	1541	PPCODE:
961	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
962		1543
963	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
964	PPCODE:	1545	PPCODE:
…		…
980	CODE:	1561	CODE:
981	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
982	OUTPUT:	1563	OUTPUT:
983	RETVAL	1564	RETVAL
984		1565
985	#if 0 //TODO	1566	void filter (CBOR *self, SV *filter = 0)
986
987	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
988	PPCODE:	1567	PPCODE:
989	{
990	SvREFCNT_dec (self->cb_object);	1568	SvREFCNT_dec (self->filter);
991	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1569	self->filter = filter ? newSVsv (filter) : filter;
992
993	XPUSHs (ST (0));	1570	XPUSHs (ST (0));
994	}
995		1571
996	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1572	SV *get_filter (CBOR *self)
997	PPCODE:	1573	CODE:
998	{	1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
999	if (!self->cb_sk_object)	1575	OUTPUT:
1000	self->cb_sk_object = newHV ();	1576	RETVAL
1001
1002	if (SvOK (cb))
1003	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1004	else
1005	{
1006	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1007
1008	if (!HvKEYS (self->cb_sk_object))
1009	{
1010	SvREFCNT_dec (self->cb_sk_object);
1011	self->cb_sk_object = 0;
1012	}
1013	}
1014
1015	XPUSHs (ST (0));
1016	}
1017
1018	#endif
1019		1577
1020	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
1021	PPCODE:	1579	PPCODE:
1022	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1580	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1023	XPUSHs (scalar);	1581	XPUSHs (scalar);
…		…
1036	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
1037	PUSHs (sv);	1595	PUSHs (sv);
1038	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1039	}	1597	}
1040		1598
1041	#if 0	1599	void incr_parse (CBOR *self, SV *cborstr)
		1600	ALIAS:
		1601	incr_parse_multiple = 1
		1602	PPCODE:
		1603	{
		1604	if (SvUTF8 (cborstr))
		1605	sv_utf8_downgrade (cborstr, 0);
		1606
		1607	if (!self->incr_count)
		1608	{
		1609	self->incr_count = newAV ();
		1610	self->incr_pos = 0;
		1611	self->incr_need = 1;
		1612
		1613	av_push (self->incr_count, newSViv (1));
		1614	}
		1615
		1616	do
		1617	{
		1618	if (!incr_parse (self, cborstr))
		1619	{
		1620	if (self->incr_need > self->max_size && self->max_size)
		1621	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1622	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1623
		1624	break;
		1625	}
		1626
		1627	SV *sv;
		1628	char *offset;
		1629
		1630	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1631	XPUSHs (sv);
		1632
		1633	sv_chop (cborstr, offset);
		1634
		1635	av_clear (self->incr_count);
		1636	av_push (self->incr_count, newSViv (1));
		1637
		1638	self->incr_pos = 0;
		1639	self->incr_need = self->incr_pos + 1;
		1640	}
		1641	while (ix);
		1642	}
		1643
		1644	void incr_reset (CBOR *self)
		1645	CODE:
		1646	{
		1647	SvREFCNT_dec (self->incr_count);
		1648	self->incr_count = 0;
		1649	}
1042		1650
1043	void DESTROY (CBOR *self)	1651	void DESTROY (CBOR *self)
1044	CODE:	1652	PPCODE:
1045	SvREFCNT_dec (self->cb_sk_object);	1653	cbor_free (self);
1046	SvREFCNT_dec (self->cb_object);
1047
1048	#endif
1049		1654
1050	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
1051		1656
1052	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
1053	PPCODE:	1661	PPCODE:
1054	{	1662	{
1055	CBOR cbor;	1663	CBOR cbor;
1056	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
1057	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1058	XPUSHs (scalar);	1667	XPUSHs (scalar);
1059	}	1668	}
1060		1669
1061	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

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