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Comparing cvsroot/CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.52 by root, Sun Apr 24 19:31:55 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
16		107
17	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
18		109
19	#define SB do {	110	#define SB do {
20	#define SE } while (0)	111	#define SE } while (0)
…		…
31	#else	122	#else
32	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
34	#endif	125	#endif
35		126
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		129
39	typedef struct {	130	typedef struct {
40	U32 flags;	131	U32 flags;
41	U32 max_depth;	132	U32 max_depth;
42	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
43		135
44	SV *cb_object;	136	// for the incremental parser
45	HV *cb_sk_object;	137	STRLEN incr_pos; // the current offset into the text
		138	STRLEN incr_need; // minimum bytes needed to decode
		139	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	140	} CBOR;
47		141
48	ecb_inline void	142	ecb_inline void
49	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
50	{	144	{
51	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	146	cbor->max_depth = 512;
		147	}
		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
53	}	154	}
54		155
55	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	157	// utility functions
57		158
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	181	#endif
81	}	182	}
82	}	183	}
83		184
84	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
85	// fp hell	186	ecb_inline int
86		187	minimum_string_length (UV idx)
87	//TODO	188	{
		189	return idx > 23
		190	? idx > 0xffU
		191	? idx > 0xffffU
		192	? idx > 0xffffffffU
		193	? 11
		194	: 7
		195	: 5
		196	: 4
		197	: 3;
		198	}
88		199
89	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
90	// encoder	201	// encoder
91		202
92	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
97	SV *sv; // result scalar	208	SV *sv; // result scalar
98	CBOR cbor;	209	CBOR cbor;
99	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
100	} enc_t;	215	} enc_t;
101		216
102	ecb_inline void	217	ecb_inline void
103	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
104	{	219	{
…		…
121	static void	236	static void
122	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
123	{	238	{
124	need (enc, 9);	239	need (enc, 9);
125		240
126	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
128	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
129	{	244	{
130	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	246	*enc->cur++ = len;
132	}	247	}
133	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
134	{	249	{
135	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	252	*enc->cur++ = len;
138	}	253	}
139	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
140	{	255	{
141	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	260	*enc->cur++ = len;
146	}	261	}
147	else	262	else
148	{	263	{
149	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	272	*enc->cur++ = len;
158	}	273	}
159	}	274	}
160		275
161	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	ecb_inline void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	284	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	if (ecb_expect_false (enc->cbor.flags & F_UTF8_STRINGS))
		286	if (!utf8)
		287	{
		288	// exceptional path for bytze strings that need to be utf8-encoded
		289	STRLEN ulen = len;
		290	U8 *p, *pend = (U8 *)str + len;
		291
		292	for (p = (U8 *)str; p < pend; ++p)
		293	ulen += *p >> 7; // count set high bits
		294
		295	encode_uint (enc, MAJOR_TEXT, ulen);
		296
		297	need (enc, ulen);
		298	for (p = (U8 *)str; p < pend; ++p)
		299	if (*p < 0x80)
		300	*enc->cur++ = *p;
		301	else
		302	{
		303	*enc->cur++ = 0xc0 + (*p >> 6);
		304	*enc->cur++ = 0x80 + (*p & 63);
		305	}
		306
		307	return;
		308	}
		309
		310	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	311	need (enc, len);
166	memcpy (enc->cur, str, len);	312	memcpy (enc->cur, str, len);
167	enc->cur += len;	313	enc->cur += len;
168	}	314	}
169		315
		316	static void
		317	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		318	{
		319	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		320	{
		321	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		322
		323	if (SvOK (*svp))
		324	{
		325	// already registered, use stringref
		326	encode_tag (enc, CBOR_TAG_STRINGREF);
		327	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		328	return;
		329	}
		330	else if (len >= minimum_string_length (enc->stringref_idx))
		331	{
		332	// register only
		333	sv_setuv (*svp, enc->stringref_idx);
		334	++enc->stringref_idx;
		335	}
		336	}
		337
		338	encode_str (enc, utf8, str, len);
		339	}
		340
170	static void encode_sv (enc_t *enc, SV *sv);	341	static void encode_sv (enc_t *enc, SV *sv);
171		342
172	static void	343	static void
173	encode_av (enc_t *enc, AV *av)	344	encode_av (enc_t *enc, AV *av)
174	{	345	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	348	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	349	croak (ERR_NESTING_EXCEEDED);
179		350
180	++enc->depth;	351	++enc->depth;
181		352
182	encode_uint (enc, 0x80, len + 1);	353	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		354
		355	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	356	for (i = 0; i <= len; ++i)
185	{	357	{
186	SV **svp = av_fetch (av, i, 0);	358	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	359	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	360	}
		361	else
		362	for (i = 0; i <= len; ++i)
		363	{
		364	SV *sv = AvARRAY (av)[i];
		365	encode_sv (enc, sv ? sv : &PL_sv_undef);
		366	}
189		367
190	--enc->depth;	368	--enc->depth;
191	}	369	}
192		370
193	static void	371	static void
…		…
202		380
203	int pairs = hv_iterinit (hv);	381	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	382	int mg = SvMAGICAL (hv);
205		383
206	if (mg)	384	if (mg)
207	encode_ch (enc, 0xa0 | 31);	385	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	386	else
209	encode_uint (enc, 0xa0, pairs);	387	encode_uint (enc, MAJOR_MAP, pairs);
210		388
211	while ((he = hv_iternext (hv)))	389	while ((he = hv_iternext (hv)))
212	{	390	{
213	if (HeKLEN (he) == HEf_SVKEY)	391	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	392	encode_sv (enc, HeSVKEY (he));
215	else	393	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	394	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		395
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	396	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	397	}
220		398
221	if (mg)	399	if (mg)
222	encode_ch (enc, 0xe0 | 31);	400	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		401
224	--enc->depth;	402	--enc->depth;
225	}	403	}
226		404
227	// encode objects, arrays and special \0=false and \1=true values.	405	// encode objects, arrays and special \0=false and \1=true values.
228	static void	406	static void
229	encode_rv (enc_t *enc, SV *sv)	407	encode_rv (enc_t *enc, SV *sv)
230	{	408	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	409	SvGETMAGIC (sv);
		410
234	svt = SvTYPE (sv);	411	svtype svt = SvTYPE (sv);
235		412
236	if (ecb_expect_false (SvOBJECT (sv)))	413	if (ecb_expect_false (SvOBJECT (sv)))
237	{	414	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	415	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	416	? types_boolean_stash
		417	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		418	HV *error_stash = !CBOR_SLOW || types_error_stash
		419	? types_error_stash
		420	: gv_stashpv ("Types::Serialiser::Error", 1);
		421	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		422	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		424
242	if (SvSTASH (sv) == stash)	425	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	426
		427	if (stash == boolean_stash)
		428	{
		429	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		430	return;
		431	}
		432	else if (stash == error_stash)
		433	{
		434	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		435	return;
		436	}
		437	else if (stash == tagged_stash)
		438	{
		439	if (svt != SVt_PVAV)
		440	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		441
		442	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		443	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		444
		445	return;
		446	}
		447	}
		448
		449	if (ecb_expect_false (SvREFCNT (sv) > 1)
		450	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		451	{
		452	if (!enc->shareable)
		453	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		454
		455	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		456
		457	if (SvOK (*svp))
		458	{
		459	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		460	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		461	return;
		462	}
244	else	463	else
245	{	464	{
246	#if 0 //TODO	465	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	466	++enc->shareable_idx;
		467	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		468	}
		469	}
		470
		471	if (ecb_expect_false (SvOBJECT (sv)))
		472	{
		473	HV *stash = SvSTASH (sv);
		474	GV *method;
		475
		476	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	477	{
		478	dSP;
		479
		480	ENTER; SAVETMPS;
		481	PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	482	// we re-bless the reference to get overload and other niceties right
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	483	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		484
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	485	PUTBACK;
		486	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	487	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	488	SPAGAIN;
263		489
264	// catch this surprisingly common error	490	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	491	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	492	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		493
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	494	encode_sv (enc, POPs);
272		495
		496	PUTBACK;
		497
273	FREETMPS; LEAVE;	498	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	499	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	500	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	501	{
		502	dSP;
		503
		504	ENTER; SAVETMPS;
		505	SAVESTACK_POS ();
		506	PUSHMARK (SP);
		507	EXTEND (SP, 2);
		508	// we re-bless the reference to get overload and other niceties right
		509	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		510	PUSHs (sv_cbor);
		511
		512	PUTBACK;
		513	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		514	SPAGAIN;
		515
		516	// catch this surprisingly common error
		517	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		518	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		519
		520	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		521	encode_uint (enc, MAJOR_ARRAY, count + 1);
		522	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		523
		524	while (count)
		525	encode_sv (enc, SP[1 - count--]);
		526
		527	PUTBACK;
		528
		529	FREETMPS; LEAVE;
		530	}
283	else	531	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	532	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	533	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	534	}
289	else if (svt == SVt_PVHV)	535	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	536	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	537	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	538	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	539	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	540	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	encode_tag (enc, CBOR_TAG_INDIRECTION);
		542	encode_sv (enc, sv);
		543	}
313	}	544	}
314		545
315	static void	546	static void
316	encode_nv (enc_t *enc, SV *sv)	547	encode_nv (enc_t *enc, SV *sv)
317	{	548	{
318	double nv = SvNVX (sv);	549	double nv = SvNVX (sv);
319		550
320	need (enc, 9);	551	need (enc, 9);
321		552
322	if (ecb_expect_false (nv == (U32)nv))	553	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	554	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	555	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	556	else if (ecb_expect_false (nv == (float)nv))
326	{	557	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	558	uint32_t fp = ecb_float_to_binary32 (nv);
328		559
329	*enc->cur++ = 0xe0 | 26;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		561
331	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	563	fp = ecb_bswap32 (fp);
333		564
334	memcpy (enc->cur, &fp, 4);	565	memcpy (enc->cur, &fp, 4);
…		…
336	}	567	}
337	else	568	else
338	{	569	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	570	uint64_t fp = ecb_double_to_binary64 (nv);
340		571
341	*enc->cur++ = 0xe0 | 27;	572	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		573
343	if (!ecb_big_endian ())	574	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	575	fp = ecb_bswap64 (fp);
345		576
346	memcpy (enc->cur, &fp, 8);	577	memcpy (enc->cur, &fp, 8);
…		…
355		586
356	if (SvPOKp (sv))	587	if (SvPOKp (sv))
357	{	588	{
358	STRLEN len;	589	STRLEN len;
359	char *str = SvPV (sv, len);	590	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	591	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	592	}
362	else if (SvNOKp (sv))	593	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	594	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	595	else if (SvIOKp (sv))
365	{	596	{
366	if (SvIsUV (sv))	597	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	598	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	599	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	600	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	601	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	602	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	603	}
373	else if (SvROK (sv))	604	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	605	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	606	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	607	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	608	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	609	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	610	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	611	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	612	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	613	}
383		614
384	static SV *	615	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	616	encode_cbor (SV *scalar, CBOR *cbor)
386	{	617	{
387	enc_t enc;	618	enc_t enc = { 0 };
388		619
389	enc.cbor = *cbor;	620	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	621	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	622	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	623	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		624
395	SvPOK_only (enc.sv);	625	SvPOK_only (enc.sv);
		626
		627	if (cbor->flags & F_PACK_STRINGS)
		628	{
		629	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		630	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		631	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		632	}
		633
396	encode_sv (&enc, scalar);	634	encode_sv (&enc, scalar);
397		635
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	636	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	637	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		638
…		…
414	U8 *end; // end of input string	652	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	653	const char *err; // parse error, if != 0
416	CBOR cbor;	654	CBOR cbor;
417	U32 depth; // recursion depth	655	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	656	U32 maxdepth; // recursion depth limit
		657	AV *shareable;
		658	AV *stringref;
		659	SV *decode_tagged;
419	} dec_t;	660	} dec_t;
420		661
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	662	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		663
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	664	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
426	#define DEC_DEC_DEPTH --dec->depth	667	#define DEC_DEC_DEPTH --dec->depth
427		668
428	static UV	669	static UV
429	decode_uint (dec_t *dec)	670	decode_uint (dec_t *dec)
430	{	671	{
431	switch (*dec->cur & 31)	672	U8 m = *dec->cur & MINOR_MASK;
432	{	673	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		674
438	case 24:	675	if (ecb_expect_true (m < LENGTH_EXT1))
		676	return m;
		677	else if (ecb_expect_true (m == LENGTH_EXT1))
		678	{
439	WANT (2);	679	WANT (1);
440	dec->cur += 2;	680	dec->cur += 1;
441	return dec->cur[-1];	681	return dec->cur[-1];
442		682	}
443	case 25:	683	else if (ecb_expect_true (m == LENGTH_EXT2))
		684	{
444	WANT (3);	685	WANT (2);
445	dec->cur += 3;	686	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	687	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	688	| ((UV)dec->cur[-1]);
448		689	}
449	case 26:	690	else if (ecb_expect_true (m == LENGTH_EXT4))
		691	{
450	WANT (5);	692	WANT (4);
451	dec->cur += 5;	693	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	694	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	695	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	696	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	697	| ((UV)dec->cur[-1]);
456		698	}
457	case 27:	699	else if (ecb_expect_true (m == LENGTH_EXT8))
		700	{
458	WANT (9);	701	WANT (8);
459	dec->cur += 9;	702	dec->cur += 8;
		703
		704	return
		705	#if UVSIZE < 8
		706	0
		707	#else
460	return (((UV)dec->cur[-8]) << 56)	708	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	709	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	710	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	711	| (((UV)dec->cur[-5]) << 32)
		712	#endif
464	| (((UV)dec->cur[-4]) << 24)	713	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	714	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	715	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	716	| ((UV)dec->cur[-1]);
468		717	}
469	default:	718	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	719	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		720
473	fail:	721	fail:
474	return 0;	722	return 0;
475	}	723	}
476		724
…		…
481	{	729	{
482	AV *av = newAV ();	730	AV *av = newAV ();
483		731
484	DEC_INC_DEPTH;	732	DEC_INC_DEPTH;
485		733
486	if ((*dec->cur & 31) == 31)	734	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	735	{
488	++dec->cur;	736	++dec->cur;
489		737
490	for (;;)	738	for (;;)
491	{	739	{
492	WANT (1);	740	WANT (1);
493		741
494	if (*dec->cur == (0xe0 | 31))	742	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	743	{
496	++dec->cur;	744	++dec->cur;
497	break;	745	break;
498	}	746	}
499		747
…		…
502	}	750	}
503	else	751	else
504	{	752	{
505	int i, len = decode_uint (dec);	753	int i, len = decode_uint (dec);
506		754
		755	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	756	av_fill (av, len - 1);
508		757
509	for (i = 0; i < len; ++i)	758	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	759	AvARRAY (av)[i] = decode_sv (dec);
511	}	760	}
…		…
517	SvREFCNT_dec (av);	766	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	767	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	768	return &PL_sv_undef;
520	}	769	}
521		770
		771	static void
		772	decode_he (dec_t *dec, HV *hv)
		773	{
		774	// for speed reasons, we specialcase single-string
		775	// byte or utf-8 strings as keys, but only when !stringref
		776
		777	if (ecb_expect_true (!dec->stringref))
		778	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		779	{
		780	I32 len = decode_uint (dec);
		781	char *key = (char *)dec->cur;
		782
		783	WANT (len);
		784	dec->cur += len;
		785
		786	hv_store (hv, key, len, decode_sv (dec), 0);
		787
		788	return;
		789	}
		790	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		791	{
		792	I32 len = decode_uint (dec);
		793	char *key = (char *)dec->cur;
		794
		795	WANT (len);
		796	dec->cur += len;
		797
		798	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		799	if (!is_utf8_string (key, len))
		800	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		801
		802	hv_store (hv, key, -len, decode_sv (dec), 0);
		803
		804	return;
		805	}
		806
		807	SV *k = decode_sv (dec);
		808	SV *v = decode_sv (dec);
		809
		810	hv_store_ent (hv, k, v, 0);
		811	SvREFCNT_dec (k);
		812
		813	fail:
		814	;
		815	}
		816
522	static SV *	817	static SV *
523	decode_hv (dec_t *dec)	818	decode_hv (dec_t *dec)
524	{	819	{
525	HV *hv = newHV ();	820	HV *hv = newHV ();
526		821
527	DEC_INC_DEPTH;	822	DEC_INC_DEPTH;
528		823
529	if ((*dec->cur & 31) == 31)	824	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	825	{
531	++dec->cur;	826	++dec->cur;
532		827
533	for (;;)	828	for (;;)
534	{	829	{
535	WANT (1);	830	WANT (1);
536		831
537	if (*dec->cur == (0xe0 | 31))	832	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	833	{
539	++dec->cur;	834	++dec->cur;
540	break;	835	break;
541	}	836	}
542		837
543	SV *k = decode_sv (dec);	838	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	839	}
548	}	840	}
549	else	841	else
550	{	842	{
551	int len = decode_uint (dec);	843	int pairs = decode_uint (dec);
552		844
553	while (len--)	845	while (pairs--)
554	{	846	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	847	}
561		848
562	DEC_DEC_DEPTH;	849	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	850	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		851
720	fail:	852	fail:
721	SvREFCNT_dec (hv);	853	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	854	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	855	return &PL_sv_undef;
724	}	856	}
725		857
726	static SV *	858	static SV *
727	decode_str (dec_t *dec, int utf8)	859	decode_str (dec_t *dec, int utf8)
728	{	860	{
729	SV *sv;	861	SV *sv = 0;
730		862
731	if ((*dec->cur & 31) == 31)	863	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	864	{
		865	// indefinite length strings
733	++dec->cur;	866	++dec->cur;
734		867
		868	U8 major = *dec->cur & MAJOR_MISC;
		869
735	sv = newSVpvn ("", 0);	870	sv = newSVpvn ("", 0);
736		871
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	872	for (;;)
739	{	873	{
740	WANT (1);	874	WANT (1);
741		875
742	if (*dec->cur == (0xe0 | 31))	876	if ((*dec->cur - major) > LENGTH_EXT8)
		877	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	878	{
744	++dec->cur;	879	++dec->cur;
745	break;	880	break;
746	}	881	}
		882	else
		883	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		884
748	SV *sv2 = decode_sv (dec);	885	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	886
		887	WANT (len);
		888	sv_catpvn (sv, dec->cur, len);
		889	dec->cur += len;
750	}	890	}
751	}	891	}
752	else	892	else
753	{	893	{
754	STRLEN len = decode_uint (dec);	894	STRLEN len = decode_uint (dec);
755		895
756	WANT (len);	896	WANT (len);
757	sv = newSVpvn (dec->cur, len);	897	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	898	dec->cur += len;
		899
		900	if (ecb_expect_false (dec->stringref)
		901	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		902	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	903	}
760		904
761	if (utf8)	905	if (utf8)
		906	{
		907	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		908	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		909	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		910
762	SvUTF8_on (sv);	911	SvUTF8_on (sv);
		912	}
763		913
764	return sv;	914	return sv;
765		915
766	fail:	916	fail:
		917	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	918	return &PL_sv_undef;
768	}	919	}
769		920
770	static SV *	921	static SV *
771	decode_tagged (dec_t *dec)	922	decode_tagged (dec_t *dec)
772	{	923	{
		924	SV *sv = 0;
773	UV tag = decode_uint (dec);	925	UV tag = decode_uint (dec);
		926
		927	WANT (1);
		928
		929	switch (tag)
		930	{
		931	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	932	sv = decode_sv (dec);
		933	break;
775		934
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	935	case CBOR_TAG_INDIRECTION:
		936	sv = newRV_noinc (decode_sv (dec));
		937	break;
		938
		939	case CBOR_TAG_STRINGREF_NAMESPACE:
		940	{
		941	ENTER; SAVETMPS;
		942
		943	SAVESPTR (dec->stringref);
		944	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		945
		946	sv = decode_sv (dec);
		947
		948	FREETMPS; LEAVE;
		949	}
		950	break;
		951
		952	case CBOR_TAG_STRINGREF:
		953	{
		954	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		955	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		956
		957	UV idx = decode_uint (dec);
		958
		959	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		960	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		961
		962	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		963	}
		964	break;
		965
		966	case CBOR_TAG_VALUE_SHAREABLE:
		967	{
		968	if (ecb_expect_false (!dec->shareable))
		969	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		970
		971	if (dec->cbor.flags & F_ALLOW_CYCLES)
		972	{
		973	sv = newSV (0);
		974	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		975
		976	SV *osv = decode_sv (dec);
		977	sv_setsv (sv, osv);
		978	SvREFCNT_dec_NN (osv);
		979	}
		980	else
		981	{
		982	av_push (dec->shareable, &PL_sv_undef);
		983	int idx = AvFILLp (dec->shareable);
		984	sv = decode_sv (dec);
		985	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		986	}
		987	}
		988	break;
		989
		990	case CBOR_TAG_VALUE_SHAREDREF:
		991	{
		992	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		993	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		994
		995	UV idx = decode_uint (dec);
		996
		997	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		998	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		999
		1000	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1001
		1002	if (sv == &PL_sv_undef)
		1003	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1004	}
		1005	break;
		1006
		1007	case CBOR_TAG_PERL_OBJECT:
		1008	{
		1009	sv = decode_sv (dec);
		1010
		1011	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1012	ERR ("corrupted CBOR data (non-array perl object)");
		1013
		1014	AV *av = (AV *)SvRV (sv);
		1015	int len = av_len (av) + 1;
		1016	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1017
		1018	if (!stash)
		1019	ERR ("cannot decode perl-object (package does not exist)");
		1020
		1021	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1022
		1023	if (!method)
		1024	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1025
		1026	dSP;
		1027
		1028	ENTER; SAVETMPS;
		1029	PUSHMARK (SP);
		1030	EXTEND (SP, len + 1);
		1031	// we re-bless the reference to get overload and other niceties right
		1032	PUSHs (*av_fetch (av, 0, 1));
		1033	PUSHs (sv_cbor);
		1034
		1035	int i;
		1036
		1037	for (i = 1; i < len; ++i)
		1038	PUSHs (*av_fetch (av, i, 1));
		1039
		1040	PUTBACK;
		1041	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1042	SPAGAIN;
		1043
		1044	if (SvTRUE (ERRSV))
		1045	{
		1046	FREETMPS; LEAVE;
		1047	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1048	}
		1049
		1050	SvREFCNT_dec (sv);
		1051	sv = SvREFCNT_inc (POPs);
		1052
		1053	PUTBACK;
		1054
		1055	FREETMPS; LEAVE;
		1056	}
		1057	break;
		1058
		1059	default:
		1060	{
		1061	sv = decode_sv (dec);
		1062
		1063	dSP;
		1064	ENTER; SAVETMPS;
		1065	SAVESTACK_POS ();
		1066	PUSHMARK (SP);
		1067	EXTEND (SP, 2);
		1068	PUSHs (newSVuv (tag));
		1069	PUSHs (sv);
		1070
		1071	PUTBACK;
		1072	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1073	SPAGAIN;
		1074
		1075	if (SvTRUE (ERRSV))
		1076	{
		1077	FREETMPS; LEAVE;
		1078	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1079	}
		1080
		1081	if (count)
		1082	{
		1083	SvREFCNT_dec (sv);
		1084	sv = SvREFCNT_inc (POPs);
		1085	}
		1086	else
		1087	{
		1088	AV *av = newAV ();
		1089	av_push (av, newSVuv (tag));
		1090	av_push (av, sv);
		1091
		1092	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1093	? cbor_tagged_stash
		1094	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1095	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1096	}
		1097
		1098	PUTBACK;
		1099
		1100	FREETMPS; LEAVE;
		1101	}
		1102	break;
		1103	}
		1104
777	return sv;	1105	return sv;
778		1106
779	AV *av = newAV ();	1107	fail:
780	av_push (av, newSVuv (tag));	1108	SvREFCNT_dec (sv);
781	av_push (av, sv);	1109	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1110	}
784		1111
785	static SV *	1112	static SV *
786	decode_sv (dec_t *dec)	1113	decode_sv (dec_t *dec)
787	{	1114	{
788	WANT (1);	1115	WANT (1);
789		1116
790	switch (*dec->cur >> 5)	1117	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1118	{
792	case 0: // unsigned int	1119	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1120	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1121	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1122	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1123	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1124	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1125	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1126
800	return decode_str (dec, 1);	1127	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1128	switch (*dec->cur++ & MINOR_MASK)
809	{	1129	{
810	case 20:	1130	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1131	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1132	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1133	#endif
814	return newSVsv (cbor_false);	1134	return newSVsv (types_false);
815	case 21:	1135	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1136	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1137	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1138	#endif
819	return newSVsv (cbor_true);	1139	return newSVsv (types_true);
820	case 22:	1140	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1141	return newSVsv (&PL_sv_undef);
		1142	case SIMPLE_UNDEF:
		1143	#if CBOR_SLOW
		1144	types_error = get_bool ("Types::Serialiser::error");
		1145	#endif
		1146	return newSVsv (types_error);
822		1147
823	case 25:	1148	case MISC_FLOAT16:
824	{	1149	{
825	WANT (2);	1150	WANT (2);
826		1151
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1152	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1153	dec->cur += 2;
829		1154
830	return newSVnv (ecb_binary16_to_float (fp));	1155	return newSVnv (ecb_binary16_to_float (fp));
831	}	1156	}
832		1157
833	case 26:	1158	case MISC_FLOAT32:
834	{	1159	{
835	uint32_t fp;	1160	uint32_t fp;
836	WANT (4);	1161	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1162	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1163	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1166	fp = ecb_bswap32 (fp);
842		1167
843	return newSVnv (ecb_binary32_to_float (fp));	1168	return newSVnv (ecb_binary32_to_float (fp));
844	}	1169	}
845		1170
846	case 27:	1171	case MISC_FLOAT64:
847	{	1172	{
848	uint64_t fp;	1173	uint64_t fp;
849	WANT (8);	1174	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1175	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1176	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1179	fp = ecb_bswap64 (fp);
855		1180
856	return newSVnv (ecb_binary64_to_double (fp));	1181	return newSVnv (ecb_binary64_to_double (fp));
857	}	1182	}
858		1183
859	// 0..19 unassigned	1184	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1185	// 24 reserved + unassigned simple (reserved values are not encodable)
		1186	// 28-30 unassigned misc
		1187	// 31 break code
861	default:	1188	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1189	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1190	}
864		1191
865	break;	1192	break;
866	}	1193	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1194
924	fail:	1195	fail:
925	return &PL_sv_undef;	1196	return &PL_sv_undef;
926	}	1197	}
927		1198
928	static SV *	1199	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1200	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1201	{
931	dec_t dec;	1202	dec_t dec = { 0 };
932	SV *sv;	1203	SV *sv;
		1204	STRLEN len;
		1205	char *data = SvPVbyte (string, len);
933		1206
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1207	if (len > cbor->max_size && cbor->max_size)
963	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1208	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1209	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1210
969	dec.cbor = *cbor;	1211	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1212	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1213	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1214
978	sv = decode_sv (&dec);	1215	sv = decode_sv (&dec);
979		1216
980	if (offset_return)	1217	if (offset_return)
981	*offset_return = dec.cur;	1218	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1221	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1222	dec.err = "garbage after CBOR object";
986		1223
987	if (dec.err)	1224	if (dec.err)
988	{	1225	{
		1226	if (dec.shareable)
		1227	{
		1228	// need to break cyclic links, which whould all be in shareable
		1229	int i;
		1230	SV **svp;
		1231
		1232	for (i = av_len (dec.shareable) + 1; i--; )
		1233	if ((svp = av_fetch (dec.shareable, i, 0)))
		1234	sv_setsv (*svp, &PL_sv_undef);
		1235	}
		1236
989	SvREFCNT_dec (sv);	1237	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1238	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1239	}
992		1240
993	sv = sv_2mortal (sv);	1241	sv = sv_2mortal (sv);
994		1242
995	return sv;	1243	return sv;
996	}	1244	}
997		1245
		1246	/////////////////////////////////////////////////////////////////////////////
		1247	// incremental parser
		1248
		1249	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1250
		1251	// returns 0 for notyet, 1 for success or error
		1252	static int
		1253	incr_parse (CBOR *self, SV *cborstr)
		1254	{
		1255	STRLEN cur;
		1256	SvPV (cborstr, cur);
		1257
		1258	while (ecb_expect_true (self->incr_need <= cur))
		1259	{
		1260	// table of integer count bytes
		1261	static I8 incr_len[MINOR_MASK + 1] = {
		1262	0, 0, 0, 0, 0, 0, 0, 0,
		1263	0, 0, 0, 0, 0, 0, 0, 0,
		1264	0, 0, 0, 0, 0, 0, 0, 0,
		1265	1, 2, 4, 8,-1,-1,-1,-2
		1266	};
		1267
		1268	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1269	U8 m = *p & MINOR_MASK;
		1270	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1271	I8 ilen = incr_len[m];
		1272
		1273	self->incr_need = self->incr_pos + 1;
		1274
		1275	if (ecb_expect_false (ilen < 0))
		1276	{
		1277	if (m != MINOR_INDEF)
		1278	return 1; // error
		1279
		1280	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1281	{
		1282	if (count >= 0)
		1283	return 1; // error
		1284
		1285	count = 1;
		1286	}
		1287	else
		1288	{
		1289	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1290	count = -1;
		1291	}
		1292	}
		1293	else
		1294	{
		1295	self->incr_need += ilen;
		1296	if (ecb_expect_false (self->incr_need > cur))
		1297	return 0;
		1298
		1299	int major = *p >> MAJOR_SHIFT;
		1300
		1301	switch (major)
		1302	{
		1303	case MAJOR_TAG >> MAJOR_SHIFT:
		1304	++count; // tags merely prefix another value
		1305	break;
		1306
		1307	case MAJOR_BYTES >> MAJOR_SHIFT:
		1308	case MAJOR_TEXT >> MAJOR_SHIFT:
		1309	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1310	case MAJOR_MAP >> MAJOR_SHIFT:
		1311	{
		1312	UV len;
		1313
		1314	if (ecb_expect_false (ilen))
		1315	{
		1316	len = 0;
		1317
		1318	do {
		1319	len = (len << 8) | *++p;
		1320	} while (--ilen);
		1321	}
		1322	else
		1323	len = m;
		1324
		1325	switch (major)
		1326	{
		1327	case MAJOR_BYTES >> MAJOR_SHIFT:
		1328	case MAJOR_TEXT >> MAJOR_SHIFT:
		1329	self->incr_need += len;
		1330	if (ecb_expect_false (self->incr_need > cur))
		1331	return 0;
		1332
		1333	break;
		1334
		1335	case MAJOR_MAP >> MAJOR_SHIFT:
		1336	len <<= 1;
		1337	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1338	if (len)
		1339	{
		1340	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1341	count = len + 1;
		1342	}
		1343	break;
		1344	}
		1345	}
		1346	}
		1347	}
		1348
		1349	self->incr_pos = self->incr_need;
		1350
		1351	if (count > 0)
		1352	{
		1353	while (!--count)
		1354	{
		1355	if (!AvFILLp (self->incr_count))
		1356	return 1; // done
		1357
		1358	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1359	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1360	}
		1361
		1362	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1363	}
		1364	}
		1365
		1366	return 0;
		1367	}
		1368
		1369
998	/////////////////////////////////////////////////////////////////////////////	1370	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1371	// XS interface functions
1000		1372
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1373	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1374
1003	BOOT:	1375	BOOT:
1004	{	1376	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1377	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1378	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1379
1008	cbor_true = get_bool ("CBOR::XS::true");	1380	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1381	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1382
		1383	types_true = get_bool ("Types::Serialiser::true" );
		1384	types_false = get_bool ("Types::Serialiser::false");
		1385	types_error = get_bool ("Types::Serialiser::error");
		1386
		1387	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1388
		1389	sv_cbor = newSVpv ("CBOR", 0);
		1390	SvREADONLY_on (sv_cbor);
1010	}	1391	}
1011		1392
1012	PROTOTYPES: DISABLE	1393	PROTOTYPES: DISABLE
1013		1394
1014	void CLONE (...)	1395	void CLONE (...)
1015	CODE:	1396	CODE:
1016	cbor_stash = 0;	1397	cbor_stash = 0;
		1398	cbor_tagged_stash = 0;
		1399	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1400	types_boolean_stash = 0;
1018		1401
1019	void new (char *klass)	1402	void new (char *klass)
1020	PPCODE:	1403	PPCODE:
1021	{	1404	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1405	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1413
1031	void shrink (CBOR *self, int enable = 1)	1414	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1415	ALIAS:
1033	shrink = F_SHRINK	1416	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1417	allow_unknown = F_ALLOW_UNKNOWN
		1418	allow_sharing = F_ALLOW_SHARING
		1419	allow_cycles = F_ALLOW_CYCLES
		1420	pack_strings = F_PACK_STRINGS
		1421	utf8_strings = F_UTF8_STRINGS
		1422	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1423	PPCODE:
1036	{	1424	{
1037	if (enable)	1425	if (enable)
1038	self->flags |= ix;	1426	self->flags |= ix;
1039	else	1427	else
…		…
1044		1432
1045	void get_shrink (CBOR *self)	1433	void get_shrink (CBOR *self)
1046	ALIAS:	1434	ALIAS:
1047	get_shrink = F_SHRINK	1435	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1436	get_allow_unknown = F_ALLOW_UNKNOWN
		1437	get_allow_sharing = F_ALLOW_SHARING
		1438	get_allow_cycles = F_ALLOW_CYCLES
		1439	get_pack_strings = F_PACK_STRINGS
		1440	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1441	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1442	XPUSHs (boolSV (self->flags & ix));
1051		1443
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1444	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1445	PPCODE:
…		…
1069	CODE:	1461	CODE:
1070	RETVAL = self->max_size;	1462	RETVAL = self->max_size;
1071	OUTPUT:	1463	OUTPUT:
1072	RETVAL	1464	RETVAL
1073		1465
1074	#if 0 //TODO	1466	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1467	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1468	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1469	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1470	XPUSHs (ST (0));
1083	}
1084		1471
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1472	SV *get_filter (CBOR *self)
1086	PPCODE:	1473	CODE:
1087	{	1474	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1475	OUTPUT:
1089	self->cb_sk_object = newHV ();	1476	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1477
1109	void encode (CBOR *self, SV *scalar)	1478	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1479	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1480	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1481	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1494	EXTEND (SP, 2);
1126	PUSHs (sv);	1495	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1496	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1497	}
1129		1498
		1499	void incr_parse (CBOR *self, SV *cborstr)
		1500	ALIAS:
		1501	incr_parse_multiple = 1
		1502	PPCODE:
		1503	{
		1504	if (SvUTF8 (cborstr))
		1505	sv_utf8_downgrade (cborstr, 0);
		1506
		1507	if (!self->incr_count)
		1508	{
		1509	self->incr_count = newAV ();
		1510	self->incr_pos = 0;
		1511	self->incr_need = 1;
		1512
		1513	av_push (self->incr_count, newSViv (1));
		1514	}
		1515
		1516	do
		1517	{
		1518	if (!incr_parse (self, cborstr))
		1519	{
		1520	if (self->incr_need > self->max_size && self->max_size)
		1521	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1522	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1523
		1524	break;
		1525	}
		1526
		1527	SV *sv;
		1528	char *offset;
		1529
		1530	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1531	XPUSHs (sv);
		1532
		1533	sv_chop (cborstr, offset);
		1534
		1535	av_clear (self->incr_count);
		1536	av_push (self->incr_count, newSViv (1));
		1537
		1538	self->incr_pos = 0;
		1539	self->incr_need = self->incr_pos + 1;
		1540	}
		1541	while (ix);
		1542	}
		1543
		1544	void incr_reset (CBOR *self)
		1545	CODE:
		1546	{
		1547	SvREFCNT_dec (self->incr_count);
		1548	self->incr_count = 0;
		1549	}
		1550
1130	void DESTROY (CBOR *self)	1551	void DESTROY (CBOR *self)
1131	CODE:	1552	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1553	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1554
1135	PROTOTYPES: ENABLE	1555	PROTOTYPES: ENABLE
1136		1556
1137	void encode_cbor (SV *scalar)	1557	void encode_cbor (SV *scalar)
		1558	ALIAS:
		1559	encode_cbor = 0
		1560	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1561	PPCODE:
1139	{	1562	{
1140	CBOR cbor;	1563	CBOR cbor;
1141	cbor_init (&cbor);	1564	cbor_init (&cbor);
		1565	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1566	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1567	XPUSHs (scalar);
1144	}	1568	}
1145		1569
1146	void decode_cbor (SV *cborstr)	1570	void decode_cbor (SV *cborstr)

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