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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.14 by root, Tue Oct 29 15:56:32 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"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	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	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	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
31		77
32	// rfc7049	78	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
39		85
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		90
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		96
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	98	};
53		99
54	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
55	#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
56		109
57	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
58		111
59	#define SB do {	112	#define SB do {
60	#define SE } while (0)	113	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
74	#endif	127	#endif
75		128
76	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::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		131
79	typedef struct {	132	typedef struct {
80	U32 flags;	133	U32 flags;
81	U32 max_depth;	134	U32 max_depth;
82	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.
83	} CBOR;	142	} CBOR;
84		143
85	ecb_inline void	144	ecb_inline void
86	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
87	{	146	{
88	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
89	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);
90	}	156	}
91		157
92	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	159	// utility functions
94		160
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	183	#endif
118	}	184	}
119	}	185	}
120		186
121	/////////////////////////////////////////////////////////////////////////////	187	// minimum length of a string to be registered for stringref
122	// fp hell	188	ecb_inline int
123		189	minimum_string_length (UV idx)
124	//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	}
125		201
126	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
127	// encoder	203	// encoder
128		204
129	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
134	SV *sv; // result scalar	210	SV *sv; // result scalar
135	CBOR cbor;	211	CBOR cbor;
136	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;
137	} enc_t;	217	} enc_t;
138		218
139	ecb_inline void	219	ecb_inline void
140	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
141	{	221	{
…		…
158	static void	238	static void
159	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
160	{	240	{
161	need (enc, 9);	241	need (enc, 9);
162		242
163	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
165	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
166	{	246	{
167	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	248	*enc->cur++ = len;
169	}	249	}
170	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
171	{	251	{
172	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	254	*enc->cur++ = len;
175	}	255	}
176	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
177	{	257	{
178	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	262	*enc->cur++ = len;
183	}	263	}
184	else	264	else
185	{	265	{
186	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	274	*enc->cur++ = len;
195	}	275	}
196	}	276	}
197		277
198	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
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	287	{
201	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);
202	need (enc, len);	318	need (enc, len);
203	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
204	enc->cur += len;	320	enc->cur += len;
205	}	321	}
206		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
207	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
208		349
209	static void	350	static void
210	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
211	{	352	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
216		357
217	++enc->depth;	358	++enc->depth;
218		359
219	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		361
		362	if (SvMAGICAL (av))
221	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
222	{	364	{
223	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		374
227	--enc->depth;	375	--enc->depth;
228	}	376	}
229		377
230	static void	378	static void
…		…
239		387
240	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
242		390
243	if (mg)	391	if (mg)
244	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	393	else
246	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
247		395
248	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
249	{	397	{
250	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
252	else	400	else
253	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));
254		402
255	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));
256	}	404	}
257		405
258	if (mg)	406	if (mg)
259	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		408
261	--enc->depth;	409	--enc->depth;
262	}	410	}
263		411
264	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
265	static void	413	static void
266	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
267	{	415	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
271	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
272		419
273	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
274	{	421	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	423	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	429	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		431
285	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
286	GV *method;
287		433
288	if (stash == boolean_stash)	434	if (stash == boolean_stash)
289	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	}
290	else if (stash == error_stash)	439	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
292	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
293	{	445	{
294	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		448
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	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))
299	}	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))));
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	487	{
302	dSP;	488	dSP;
303		489
304	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
305	// 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
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		494
308	PUTBACK;	495	PUTBACK;
309	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
322	}	509	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	511	{
325	dSP;	512	dSP;
326		513
327	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
328	EXTEND (SP, 2);	517	EXTEND (SP, 2);
329	// 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
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
332		521
…		…
336		525
337	// catch this surprisingly common error	526	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	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));
340		529
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		533
345	while (count)	534	while (count)
346	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
347		536
348	PUTBACK;	537	PUTBACK;
…		…
355	}	544	}
356	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	549	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
380	}	554	}
381		555
382	static void	556	static void
383	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
384	{	558	{
385	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
386		560
387	need (enc, 9);	561	need (enc, 9);
388		562
389	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	565	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
393	{	567	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
395		569
396	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
397		571
398	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
400		574
401	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
403	}	577	}
404	else	578	else
405	{	579	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
407		581
408	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
409		583
410	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
412		586
413	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
422		596
423	if (SvPOKp (sv))	597	if (SvPOKp (sv))
424	{	598	{
425	STRLEN len;	599	STRLEN len;
426	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	602	}
429	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	604	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
432	{	606	{
433	if (SvIsUV (sv))	607	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	611	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	613	}
440	else if (SvROK (sv))	614	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	616	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	620	else
447	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",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	623	}
450		624
451	static SV *	625	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
453	{	627	{
454	enc_t enc;	628	enc_t enc = { 0 };
455		629
456	enc.cbor = *cbor;	630	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		634
462	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
463	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
464		645
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*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
467		648
…		…
481	U8 *end; // end of input string	662	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
483	CBOR cbor;	664	CBOR cbor;
484	U32 depth; // recursion depth	665	U32 depth; // recursion depth
485	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
486	} dec_t;	671	} dec_t;
487		672
488	#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);
489		680
490	#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;
491		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
492	#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)
493	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
494		717
495	static UV	718	static UV
496	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
497	{	720	{
498	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
499	{	722	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		723
505	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
506	WANT (2);	728	WANT (1);
507	dec->cur += 2;	729	dec->cur += 1;
508	return dec->cur[-1];	730	return dec->cur[-1];
509		731	}
510	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
511	WANT (3);	734	WANT (2);
512	dec->cur += 3;	735	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
515		738	}
516	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
517	WANT (5);	741	WANT (4);
518	dec->cur += 5;	742	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
523		747	}
524	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
525	WANT (9);	750	WANT (8);
526	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
527	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
531	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
535		766	}
536	default:	767	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		769
540	fail:	770	fail:
541	return 0;	771	return 0;
542	}	772	}
543		773
…		…
548	{	778	{
549	AV *av = newAV ();	779	AV *av = newAV ();
550		780
551	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
552		782
553	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	784	{
555	++dec->cur;	785	++dec->cur;
556		786
557	for (;;)	787	for (;;)
558	{	788	{
559	WANT (1);	789	WANT (1);
560		790
561	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
562	{	792	{
563	++dec->cur;	793	++dec->cur;
564	break;	794	break;
565	}	795	}
566		796
567	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
568	}	798	}
569	}	799	}
570	else	800	else
571	{	801	{
572	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
573		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	805	av_fill (av, len - 1);
575		806
576	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
578	}	809	}
…		…
584	SvREFCNT_dec (av);	815	SvREFCNT_dec (av);
585	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	817	return &PL_sv_undef;
587	}	818	}
588		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
589	static SV *	894	static SV *
590	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
591	{	896	{
592	HV *hv = newHV ();	897	HV *hv = newHV ();
593		898
594	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
595		900
596	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
597	{	902	{
598	++dec->cur;	903	++dec->cur;
599		904
600	for (;;)	905	for (;;)
601	{	906	{
602	WANT (1);	907	WANT (1);
603		908
604	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
605	{	910	{
606	++dec->cur;	911	++dec->cur;
607	break;	912	break;
608	}	913	}
609		914
610	SV *k = decode_sv (dec);	915	decode_he (dec, hv);
611	SV *v = decode_sv (dec);
612
613	hv_store_ent (hv, k, v, 0);
614	SvREFCNT_dec (k);
615	}	916	}
616	}	917	}
617	else	918	else
618	{	919	{
619	int len = decode_uint (dec);	920	UV pairs = decode_uint (dec);
620		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		923
621	while (len--)	924	while (pairs--)
622	{	925	decode_he (dec, hv);
623	SV *k = decode_sv (dec);
624	SV *v = decode_sv (dec);
625
626	hv_store_ent (hv, k, v, 0);
627	SvREFCNT_dec (k);
628	}
629	}	926	}
630		927
631	DEC_DEC_DEPTH;	928	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)hv);	929	return newRV_noinc ((SV *)hv);
633		930
…		…
640	static SV *	937	static SV *
641	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
642	{	939	{
643	SV *sv = 0;	940	SV *sv = 0;
644		941
645	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
646	{	943	{
		944	// indefinite length strings
647	++dec->cur;	945	++dec->cur;
648		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
649	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
650		950
651	// not very fast, and certainly not robust against illegal input
652	for (;;)	951	for (;;)
653	{	952	{
654	WANT (1);	953	WANT (1);
655		954
656	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	957	{
658	++dec->cur;	958	++dec->cur;
659	break;	959	break;
660	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
661		963
662	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;
663	}	969	}
664	}	970	}
665	else	971	else
666	{	972	{
667	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
668		974
669	WANT (len);	975	WANT (len);
670	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
671	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));
672	}	982	}
673		983
674	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
675	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
676		992
677	return sv;	993	return sv;
678		994
679	fail:	995	fail:
680	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
682	}	998	}
683		999
684	static SV *	1000	static SV *
685	decode_tagged (dec_t *dec)	1001	decode_tagged (dec_t *dec)
686	{	1002	{
		1003	SV *sv = 0;
687	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:
688	SV *sv = decode_sv (dec);	1011	sv = decode_sv (dec);
		1012	break;
689		1013
690	if (tag == CBOR_TAG_MAGIC)	1014	case CBOR_TAG_INDIRECTION:
691	return sv;	1015	sv = newRV_noinc (decode_sv (dec));
692	else if (tag == CBOR_TAG_PERL_OBJECT)	1016	break;
693	{	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
694	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
695	ERR ("corrupted CBOR data (non-array perl object)");	1096	ERR ("corrupted CBOR data (non-array perl object)");
696		1097
697	AV *av = (AV *)SvRV (sv);	1098	AV *av = (AV *)SvRV (sv);
698	int len = av_len (av) + 1;	1099	int len = av_len (av) + 1;
699	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1100	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
700		1101
701	if (!stash)	1102	if (!stash)
702	ERR ("cannot decode perl-object (package does not exist)");	1103	ERR ("cannot decode perl-object (package does not exist)");
703		1104
704	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1105	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
705		1106
706	if (!method)	1107	if (!method)
707	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)");
708		1109
709	dSP;	1110	dSP;
710		1111
711	ENTER; SAVETMPS; PUSHMARK (SP);	1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
712	EXTEND (SP, len + 1);	1114	EXTEND (SP, len + 1);
713	// 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
714	PUSHs (*av_fetch (av, 0, 1));	1116	PUSHs (*av_fetch (av, 0, 1));
715	PUSHs (sv_cbor);	1117	PUSHs (sv_cbor);
716		1118
717	int i;	1119	int i;
718		1120
719	for (i = 1; i < len; ++i)	1121	for (i = 1; i < len; ++i)
720	PUSHs (*av_fetch (av, i, 1));	1122	PUSHs (*av_fetch (av, i, 1));
721		1123
722	PUTBACK;	1124	PUTBACK;
723	call_sv ((SV *)GvCV (method), G_SCALAR);	1125	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
724	SPAGAIN;	1126	SPAGAIN;
725		1127
		1128	if (SvTRUE (ERRSV))
		1129	{
		1130	FREETMPS; LEAVE;
		1131	ERR_ERRSV;
		1132	}
		1133
726	SvREFCNT_dec (sv);	1134	SvREFCNT_dec (sv);
727	sv = SvREFCNT_inc (POPs);	1135	sv = SvREFCNT_inc (POPs);
728		1136
729	PUTBACK;	1137	PUTBACK;
730		1138
731	FREETMPS; LEAVE;	1139	FREETMPS; LEAVE;
		1140	}
		1141	break;
732		1142
733	return sv;	1143	default:
734	}	1144	filter:
735	else	1145	{
736	{	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	{
737	AV *av = newAV ();	1177	AV *av = newAV ();
738	av_push (av, newSVuv (tag));	1178	av_push (av, tag_sv);
739	av_push (av, sv);	1179	av_push (av, sv);
740		1180
741	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
742	? cbor_tagged_stash	1182	? cbor_tagged_stash
743	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
744
745	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;
746	}	1192	}
		1193
		1194	return sv;
747		1195
748	fail:	1196	fail:
749	SvREFCNT_dec (sv);	1197	SvREFCNT_dec (sv);
750	return &PL_sv_undef;	1198	return &PL_sv_undef;
751	}	1199	}
…		…
753	static SV *	1201	static SV *
754	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
755	{	1203	{
756	WANT (1);	1204	WANT (1);
757		1205
758	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
759	{	1207	{
760	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
761	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
762	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
763	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
764	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
765	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
766	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
767	return decode_str (dec, 1);	1215
768	case 4: // array	1216	case MAJOR_MISC >> MAJOR_SHIFT:
769	return decode_av (dec);
770	case 5: // map
771	return decode_hv (dec);
772	case 6: // tag
773	return decode_tagged (dec);
774	case 7: // misc
775	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
776	{	1218	{
777	case 20:	1219	case SIMPLE_FALSE:
778	#if CBOR_SLOW	1220	#if CBOR_SLOW
779	types_false = get_bool ("Types::Serialiser::false");	1221	types_false = get_bool ("Types::Serialiser::false");
780	#endif	1222	#endif
781	return newSVsv (types_false);	1223	return newSVsv (types_false);
782	case 21:	1224	case SIMPLE_TRUE:
783	#if CBOR_SLOW	1225	#if CBOR_SLOW
784	types_true = get_bool ("Types::Serialiser::true");	1226	types_true = get_bool ("Types::Serialiser::true");
785	#endif	1227	#endif
786	return newSVsv (types_true);	1228	return newSVsv (types_true);
787	case 22:	1229	case SIMPLE_NULL:
788	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
789	case 23:	1231	case SIMPLE_UNDEF:
790	#if CBOR_SLOW	1232	#if CBOR_SLOW
791	types_error = get_bool ("Types::Serialiser::error");	1233	types_error = get_bool ("Types::Serialiser::error");
792	#endif	1234	#endif
793	return newSVsv (types_error);	1235	return newSVsv (types_error);
794		1236
795	case 25:	1237	case MISC_FLOAT16:
796	{	1238	{
797	WANT (2);	1239	WANT (2);
798		1240
799	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
800	dec->cur += 2;	1242	dec->cur += 2;
801		1243
802	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
803	}	1245	}
804		1246
805	case 26:	1247	case MISC_FLOAT32:
806	{	1248	{
807	uint32_t fp;	1249	uint32_t fp;
808	WANT (4);	1250	WANT (4);
809	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
810	dec->cur += 4;	1252	dec->cur += 4;
…		…
813	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
814		1256
815	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
816	}	1258	}
817		1259
818	case 27:	1260	case MISC_FLOAT64:
819	{	1261	{
820	uint64_t fp;	1262	uint64_t fp;
821	WANT (8);	1263	WANT (8);
822	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
823	dec->cur += 8;	1265	dec->cur += 8;
…		…
826	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
827		1269
828	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
829	}	1271	}
830		1272
831	// 0..19 unassigned	1273	// 0..19 unassigned simple
832	// 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
833	default:	1277	default:
834	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
835	}	1279	}
836		1280
837	break;	1281	break;
838	}	1282	}
839		1283
…		…
842	}	1286	}
843		1287
844	static SV *	1288	static SV *
845	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
846	{	1290	{
847	dec_t dec;	1291	dec_t dec = { 0 };
848	SV *sv;	1292	SV *sv;
		1293	STRLEN len;
		1294	char *data = SvPVbyte (string, len);
849		1295
850	/* work around bugs in 5.10 where manipulating magic values
851	* makes perl ignore the magic in subsequent accesses.
852	* also make a copy of non-PV values, to get them into a clean
853	* state (SvPV should do that, but it's buggy, see below).
854	*/
855	/*SvGETMAGIC (string);*/
856	if (SvMAGICAL (string) || !SvPOK (string))
857	string = sv_2mortal (newSVsv (string));
858
859	SvUPGRADE (string, SVt_PV);
860
861	/* work around a bug in perl 5.10, which causes SvCUR to fail an
862	* assertion with -DDEBUGGING, although SvCUR is documented to
863	* return the xpv_cur field which certainly exists after upgrading.
864	* according to nicholas clark, calling SvPOK fixes this.
865	* But it doesn't fix it, so try another workaround, call SvPV_nolen
866	* and hope for the best.
867	* Damnit, SvPV_nolen still trips over yet another assertion. This
868	* assertion business is seriously broken, try yet another workaround
869	* for the broken -DDEBUGGING.
870	*/
871	{
872	#ifdef DEBUGGING
873	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
874	#else
875	STRLEN offset = SvCUR (string);
876	#endif
877
878	if (offset > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
879	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",
880	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1298	(unsigned long)len, (unsigned long)cbor->max_size);
881	}
882
883	sv_utf8_downgrade (string, 0);
884		1299
885	dec.cbor = *cbor;	1300	dec.cbor = *cbor;
886	dec.cur = (U8 *)SvPVX (string);	1301	dec.cur = (U8 *)data;
887	dec.end = (U8 *)SvEND (string);	1302	dec.end = (U8 *)data + len;
888	dec.err = 0;
889	dec.depth = 0;
890		1303
891	sv = decode_sv (&dec);	1304	sv = decode_sv (&dec);
892		1305
893	if (offset_return)	1306	if (offset_return)
894	*offset_return = dec.cur;	1307	*offset_return = dec.cur;
…		…
897	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
898	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
899		1312
900	if (dec.err)	1313	if (dec.err)
901	{	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
902	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
903	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);
904	}	1332	}
905		1333
906	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
907		1335
908	return sv;	1336	return sv;
909	}	1337	}
910		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
911	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
912	// XS interface functions	1464	// XS interface functions
913		1465
914	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
915		1467
…		…
923		1475
924	types_true = get_bool ("Types::Serialiser::true" );	1476	types_true = get_bool ("Types::Serialiser::true" );
925	types_false = get_bool ("Types::Serialiser::false");	1477	types_false = get_bool ("Types::Serialiser::false");
926	types_error = get_bool ("Types::Serialiser::error");	1478	types_error = get_bool ("Types::Serialiser::error");
927		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
928	sv_cbor = newSVpv ("CBOR", 0);	1482	sv_cbor = newSVpv ("CBOR", 0);
929	SvREADONLY_on (sv_cbor);	1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
930	}	1486	}
931		1487
932	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
933		1489
934	void CLONE (...)	1490	void CLONE (...)
…		…
952		1508
953	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
954	ALIAS:	1510	ALIAS:
955	shrink = F_SHRINK	1511	shrink = F_SHRINK
956	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
957	PPCODE:	1520	PPCODE:
958	{	1521	{
959	if (enable)	1522	if (enable)
960	self->flags |= ix;	1523	self->flags |= ix;
961	else	1524	else
…		…
966		1529
967	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
968	ALIAS:	1531	ALIAS:
969	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
970	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
971	PPCODE:	1541	PPCODE:
972	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
973		1543
974	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
975	PPCODE:	1545	PPCODE:
…		…
991	CODE:	1561	CODE:
992	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
993	OUTPUT:	1563	OUTPUT:
994	RETVAL	1564	RETVAL
995		1565
996	#if 0 //TODO	1566	void filter (CBOR *self, SV *filter = 0)
997
998	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
999	PPCODE:	1567	PPCODE:
1000	{
1001	SvREFCNT_dec (self->cb_object);	1568	SvREFCNT_dec (self->filter);
1002	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1569	self->filter = filter ? newSVsv (filter) : filter;
1003
1004	XPUSHs (ST (0));	1570	XPUSHs (ST (0));
1005	}
1006		1571
1007	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1572	SV *get_filter (CBOR *self)
1008	PPCODE:	1573	CODE:
1009	{	1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1010	if (!self->cb_sk_object)	1575	OUTPUT:
1011	self->cb_sk_object = newHV ();	1576	RETVAL
1012
1013	if (SvOK (cb))
1014	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1015	else
1016	{
1017	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1018
1019	if (!HvKEYS (self->cb_sk_object))
1020	{
1021	SvREFCNT_dec (self->cb_sk_object);
1022	self->cb_sk_object = 0;
1023	}
1024	}
1025
1026	XPUSHs (ST (0));
1027	}
1028
1029	#endif
1030		1577
1031	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
1032	PPCODE:	1579	PPCODE:
1033	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1580	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1034	XPUSHs (scalar);	1581	XPUSHs (scalar);
…		…
1047	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
1048	PUSHs (sv);	1595	PUSHs (sv);
1049	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1050	}	1597	}
1051		1598
1052	#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	}
1053		1650
1054	void DESTROY (CBOR *self)	1651	void DESTROY (CBOR *self)
1055	CODE:	1652	PPCODE:
1056	SvREFCNT_dec (self->cb_sk_object);	1653	cbor_free (self);
1057	SvREFCNT_dec (self->cb_object);
1058
1059	#endif
1060		1654
1061	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
1062		1656
1063	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
1064	PPCODE:	1661	PPCODE:
1065	{	1662	{
1066	CBOR cbor;	1663	CBOR cbor;
1067	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
1068	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1069	XPUSHs (scalar);	1667	XPUSHs (scalar);
1070	}	1668	}
1071		1669
1072	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

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