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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
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	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
24		66
25	// known tags	67	// known tags
26	enum cbor_tag	68	enum cbor_tag
27	{	69	{
28	// inofficial extensions (pending iana registration)	70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		78
37	// rfc7049	79	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
44		86
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		91
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		97
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	99	};
58		100
59	#define F_SHRINK 0x00000001UL	101	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	103	#define F_ALLOW_SHARING 0x00000004UL
		104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	106	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
64		110
65	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
66		112
67	#define SB do {	113	#define SB do {
68	#define SE } while (0)	114	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
82	#endif	128	#endif
83		129
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		132
87	typedef struct {	133	typedef struct {
88	U32 flags;	134	U32 flags;
89	U32 max_depth;	135	U32 max_depth;
90	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
		138
		139	// for the incremental parser
		140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	143	} CBOR;
92		144
93	ecb_inline void	145	ecb_inline void
94	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
95	{	147	{
96	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
98	}	157	}
99		158
100	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	160	// utility functions
102		161
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	184	#endif
126	}	185	}
127	}	186	}
128		187
		188	// minimum length of a string to be registered for stringref
		189	ecb_inline int
		190	minimum_string_length (UV idx)
		191	{
		192
		193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
		199
129	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
130	// encoder	201	// encoder
131		202
132	// structure used for encoding CBOR	203	// structure used for encoding CBOR
133	typedef struct	204	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
137	SV *sv; // result scalar	208	SV *sv; // result scalar
138	CBOR cbor;	209	CBOR cbor;
139	U32 depth; // recursion level	210	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	213	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	214	UV shareable_idx;
143	} enc_t;	215	} enc_t;
144		216
145	ecb_inline void	217	ecb_inline void
146	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
147	{	219	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	221	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
164	static void	236	static void
165	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
166	{	238	{
167	need (enc, 9);	239	need (enc, 9);
168		240
169	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
171	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
172	{	244	{
173	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	246	*enc->cur++ = len;
175	}	247	}
176	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
177	{	249	{
178	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	252	*enc->cur++ = len;
181	}	253	}
182	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
183	{	255	{
184	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	260	*enc->cur++ = len;
189	}	261	}
190	else	262	else
191	{	263	{
192	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	272	*enc->cur++ = len;
201	}	273	}
202	}	274	}
203		275
204	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	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	285	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	286	STRLEN ulen = len;
		287	U8 *p, *pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	*enc->cur++ = *p;
		298	else
		299	{
		300	*enc->cur++ = 0xc0 + (*p >> 6);
		301	*enc->cur++ = 0x80 + (*p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	316	need (enc, len);
209	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
210	enc->cur += len;	318	enc->cur += len;
211	}	319	}
212		320
213	ecb_inline void	321	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	322	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	323	{
216	encode_uint (enc, 0xc0, tag);	324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		325	{
		326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		327
		328	if (SvOK (*svp))
		329	{
		330	// already registered, use stringref
		331	encode_tag (enc, CBOR_TAG_STRINGREF);
		332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		333	return;
		334	}
		335	else if (len >= minimum_string_length (enc->stringref_idx))
		336	{
		337	// register only
		338	sv_setuv (*svp, enc->stringref_idx);
		339	++enc->stringref_idx;
		340	}
		341	}
		342
		343	encode_str (enc, upgrade_utf8, utf8, str, len);
217	}	344	}
218		345
219	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
220		347
221	static void	348	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
228		355
229	++enc->depth;	356	++enc->depth;
230		357
231	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		359
		360	if (SvMAGICAL (av))
233	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
234	{	362	{
235	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
238		372
239	--enc->depth;	373	--enc->depth;
240	}	374	}
241		375
242	static void	376	static void
…		…
251		385
252	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
254		388
255	if (mg)	389	if (mg)
256	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	391	else
258	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
259		393
260	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
261	{	395	{
262	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
264	else	398	else
265	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
266		400
267	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
268	}	402	}
269		403
270	if (mg)	404	if (mg)
271	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		406
273	--enc->depth;	407	--enc->depth;
274	}	408	}
275		409
276	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
277	static void	411	static void
278	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
279	{	413	{
280	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
281
282	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
283	&& ecb_expect_false (SvREFCNT (sv) > 1))
284	{
285	if (!enc->shareable)
286	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
287
288	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
289
290	if (SvOK (*svp))
291	{
292	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
293	encode_uint (enc, 0x00, SvUV (*svp));
294	return;
295	}
296	else
297	{
298	sv_setuv (*svp, enc->shareable_idx);
299	++enc->shareable_idx;
300	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
301	}
302	}
303		415
304	svtype svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
305		417
306	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
307	{	419	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	427	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		429
318	HV *stash = SvSTASH (sv);	430	HV *stash = SvSTASH (sv);
319	GV *method;
320		431
321	if (stash == boolean_stash)	432	if (stash == boolean_stash)
322	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
323	else if (stash == error_stash)	437	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
325	else if (stash == tagged_stash)	442	else if (stash == tagged_stash)
326	{	443	{
327	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		446
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	448	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		459
		460	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
332	}	463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
		467	}
		468	else
		469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	485	{
335	dSP;	486	dSP;
336		487
337	ENTER; SAVETMPS; PUSHMARK (SP);	488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
338	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		492
341	PUTBACK;	493	PUTBACK;
342	// G_SCALAR ensures that return value is 1	494	// G_SCALAR ensures that return value is 1
…		…
355	}	507	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	509	{
358	dSP;	510	dSP;
359		511
360	ENTER; SAVETMPS; PUSHMARK (SP);	512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
361	EXTEND (SP, 2);	515	EXTEND (SP, 2);
362	// we re-bless the reference to get overload and other niceties right	516	// we re-bless the reference to get overload and other niceties right
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	518	PUSHs (sv_cbor);
365		519
…		…
370	// catch this surprisingly common error	524	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
372	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		527
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	529	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		531
378	while (count)	532	while (count)
379	encode_sv (enc, SP[1 - count--]);	533	encode_sv (enc, SP[1 - count--]);
380		534
381	PUTBACK;	535	PUTBACK;
…		…
402	{	556	{
403	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
404		558
405	need (enc, 9);	559	need (enc, 9);
406		560
407	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	563	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
411	{	565	{
412	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
413		567
414	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
415		569
416	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
418		572
419	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
421	}	575	}
422	else	576	else
423	{	577	{
424	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
425		579
426	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
427		581
428	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
430		584
431	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
440		594
441	if (SvPOKp (sv))	595	if (SvPOKp (sv))
442	{	596	{
443	STRLEN len;	597	STRLEN len;
444	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	600	}
447	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	602	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
450	{	604	{
451	if (SvIsUV (sv))	605	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	609	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	611	}
458	else if (SvROK (sv))	612	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	614	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	618	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	621	}
468		622
469	static SV *	623	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
471	{	625	{
472	enc_t enc = { };	626	enc_t enc = { 0 };
473		627
474	enc.cbor = *cbor;	628	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
478		632
479	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
		634
		635	if (cbor->flags & F_PACK_STRINGS)
		636	{
		637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		638	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		639	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		640	}
		641
480	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
481		643
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	645	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		646
…		…
499	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
500	CBOR cbor;	662	CBOR cbor;
501	U32 depth; // recursion depth	663	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
503	AV *shareable;	665	AV *shareable;
		666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	669	} dec_t;
505		670
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
507		678
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
509		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t *dec, const char *reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
510	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
511	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
512		715
513	static UV	716	static UV
514	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
515	{	718	{
516	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
517	{	720	++dec->cur;
518	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
519	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
520	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
521	return *dec->cur++ & 31;
522		721
523	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
524	WANT (2);	726	WANT (1);
525	dec->cur += 2;	727	dec->cur += 1;
526	return dec->cur[-1];	728	return dec->cur[-1];
527		729	}
528	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
529	WANT (3);	732	WANT (2);
530	dec->cur += 3;	733	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
533		736	}
534	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
535	WANT (5);	739	WANT (4);
536	dec->cur += 5;	740	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
541		745	}
542	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
543	WANT (9);	748	WANT (8);
544	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
545	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
549	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
553		764	}
554	default:	765	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		767
558	fail:	768	fail:
559	return 0;	769	return 0;
560	}	770	}
561		771
…		…
566	{	776	{
567	AV *av = newAV ();	777	AV *av = newAV ();
568		778
569	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
570		780
571	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	782	{
573	++dec->cur;	783	++dec->cur;
574		784
575	for (;;)	785	for (;;)
576	{	786	{
577	WANT (1);	787	WANT (1);
578		788
579	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
580	{	790	{
581	++dec->cur;	791	++dec->cur;
582	break;	792	break;
583	}	793	}
584		794
585	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
586	}	796	}
587	}	797	}
588	else	798	else
589	{	799	{
590	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
591		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
592	av_fill (av, len - 1);	803	av_fill (av, len - 1);
593		804
594	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
596	}	807	}
…		…
606		817
607	static void	818	static void
608	decode_he (dec_t *dec, HV *hv)	819	decode_he (dec_t *dec, HV *hv)
609	{	820	{
610	// for speed reasons, we specialcase single-string	821	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	822	// byte or utf-8 strings as keys, but only when !stringref
612		823
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	824	if (ecb_expect_true (!dec->stringref))
		825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	826	{
615	I32 len = decode_uint (dec);	827	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	828	char *key = (char *)dec->cur;
617		829
		830	WANT (len);
618	dec->cur += len;	831	dec->cur += len;
619		832
620	hv_store (hv, key, len, decode_sv (dec), 0);	833	hv_store (hv, key, len, decode_sv (dec), 0);
		834
		835	return;
621	}	836	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	838	{
624	I32 len = decode_uint (dec);	839	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	840	char *key = (char *)dec->cur;
626		841
		842	WANT (len);
627	dec->cur += len;	843	dec->cur += len;
628		844
		845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		848
629	hv_store (hv, key, -len, decode_sv (dec), 0);	849	hv_store (hv, key, -len, decode_sv (dec), 0);
		850
		851	return;
630	}	852	}
631	else	853
632	{
633	SV *k = decode_sv (dec);	854	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	855	SV *v = decode_sv (dec);
635		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
636	hv_store_ent (hv, k, v, 0);	885	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	886	SvREFCNT_dec (k);
638	}	887
		888	fail:
		889	;
639	}	890	}
640		891
641	static SV *	892	static SV *
642	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
643	{	894	{
644	HV *hv = newHV ();	895	HV *hv = newHV ();
645		896
646	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
647		898
648	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	900	{
650	++dec->cur;	901	++dec->cur;
651		902
652	for (;;)	903	for (;;)
653	{	904	{
654	WANT (1);	905	WANT (1);
655		906
656	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	908	{
658	++dec->cur;	909	++dec->cur;
659	break;	910	break;
660	}	911	}
661		912
662	decode_he (dec, hv);	913	decode_he (dec, hv);
663	}	914	}
664	}	915	}
665	else	916	else
666	{	917	{
667	int pairs = decode_uint (dec);	918	UV pairs = decode_uint (dec);
		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
668		921
669	while (pairs--)	922	while (pairs--)
670	decode_he (dec, hv);	923	decode_he (dec, hv);
671	}	924	}
672		925
…		…
682	static SV *	935	static SV *
683	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
684	{	937	{
685	SV *sv = 0;	938	SV *sv = 0;
686		939
687	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
688	{	941	{
		942	// indefinite length strings
689	++dec->cur;	943	++dec->cur;
690		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
691	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
692		948
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	949	for (;;)
695	{	950	{
696	WANT (1);	951	WANT (1);
697		952
698	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	955	{
700	++dec->cur;	956	++dec->cur;
701	break;	957	break;
702	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		961
704	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
705	}	967	}
706	}	968	}
707	else	969	else
708	{	970	{
709	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
710		972
711	WANT (len);	973	WANT (len);
712	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	975	dec->cur += len;
		976
		977	if (ecb_expect_false (dec->stringref)
		978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	980	}
715		981
716	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
717	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
718		990
719	return sv;	991	return sv;
720		992
721	fail:	993	fail:
722	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1004	WANT (1);
733		1005
734	switch (tag)	1006	switch (tag)
735	{	1007	{
736	case CBOR_TAG_MAGIC:	1008	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
738		1011
739	case CBOR_TAG_INDIRECTION:	1012	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1013	sv = newRV_noinc (decode_sv (dec));
		1014	break;
		1015
		1016	case CBOR_TAG_STRINGREF_NAMESPACE:
		1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
		1020	ENTER;
		1021
		1022	SAVESPTR (dec->stringref);
		1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1024
		1025	sv = decode_sv (dec);
		1026
		1027	LEAVE;
		1028	}
		1029	break;
		1030
		1031	case CBOR_TAG_STRINGREF:
		1032	{
		1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1035
		1036	UV idx = decode_uint (dec);
		1037
		1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1039	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1040
		1041	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1042	}
		1043	break;
741		1044
742	case CBOR_TAG_VALUE_SHAREABLE:	1045	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1046	{
744	if (ecb_expect_false (!dec->shareable))	1047	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
747	sv = newSV (0);	1052	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1054
750	SV *osv = decode_sv (dec);	1055	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1056	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1057	SvREFCNT_dec_NN (osv);
753	}	1058	}
754		1059	else
755	return sv;	1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
		1066	}
		1067	break;
756		1068
757	case CBOR_TAG_VALUE_SHAREDREF:	1069	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1070	{
759	if ((*dec->cur >> 5) != 0)	1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1073
762	UV idx = decode_uint (dec);	1074	UV idx = decode_uint (dec);
763		1075
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1078
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	1083	}
		1084	break;
769		1085
770	case CBOR_TAG_PERL_OBJECT:	1086	case CBOR_TAG_PERL_OBJECT:
771	{	1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
772	sv = decode_sv (dec);	1091	sv = decode_sv (dec);
773		1092
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1094	ERR ("corrupted CBOR data (non-array perl object)");
776		1095
…		…
786	if (!method)	1105	if (!method)
787	ERR ("cannot decode perl-object (package does not have a THAW method)");	1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
788		1107
789	dSP;	1108	dSP;
790		1109
791	ENTER; SAVETMPS; PUSHMARK (SP);	1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1112	EXTEND (SP, len + 1);
793	// we re-bless the reference to get overload and other niceties right	1113	// we re-bless the reference to get overload and other niceties right
794	PUSHs (*av_fetch (av, 0, 1));	1114	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1115	PUSHs (sv_cbor);
796		1116
…		…
804	SPAGAIN;	1124	SPAGAIN;
805		1125
806	if (SvTRUE (ERRSV))	1126	if (SvTRUE (ERRSV))
807	{	1127	{
808	FREETMPS; LEAVE;	1128	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1129	ERR_ERRSV;
810	}	1130	}
811		1131
812	SvREFCNT_dec (sv);	1132	SvREFCNT_dec (sv);
813	sv = SvREFCNT_inc (POPs);	1133	sv = SvREFCNT_inc (POPs);
814		1134
815	PUTBACK;	1135	PUTBACK;
816		1136
817	FREETMPS; LEAVE;	1137	FREETMPS; LEAVE;
818
819	return sv;
820	}	1138	}
		1139	break;
821		1140
822	default:	1141	default:
		1142	filter:
823	{	1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
824	sv = decode_sv (dec);	1146	sv = decode_sv (dec);
825		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
826	AV *av = newAV ();	1175	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
828	av_push (av, sv);	1177	av_push (av, sv);
829		1178
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1180	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
		1188	}
		1189	break;
836	}	1190	}
		1191
		1192	return sv;
837		1193
838	fail:	1194	fail:
839	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1196	return &PL_sv_undef;
841	}	1197	}
…		…
843	static SV *	1199	static SV *
844	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
845	{	1201	{
846	WANT (1);	1202	WANT (1);
847		1203
848	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1205	{
850	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1213
858	case 4: // array	1214	case MAJOR_MISC >> MAJOR_SHIFT:
859	return decode_av (dec);
860	case 5: // map
861	return decode_hv (dec);
862	case 6: // tag
863	return decode_tagged (dec);
864	case 7: // misc
865	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
866	{	1216	{
867	case 20:	1217	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1218	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1219	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1220	#endif
871	return newSVsv (types_false);	1221	return newSVsv (types_false);
872	case 21:	1222	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1223	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1224	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1225	#endif
876	return newSVsv (types_true);	1226	return newSVsv (types_true);
877	case 22:	1227	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
879	case 23:	1229	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1230	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1231	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1232	#endif
883	return newSVsv (types_error);	1233	return newSVsv (types_error);
884		1234
885	case 25:	1235	case MISC_FLOAT16:
886	{	1236	{
887	WANT (2);	1237	WANT (2);
888		1238
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1240	dec->cur += 2;
891		1241
892	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
893	}	1243	}
894		1244
895	case 26:	1245	case MISC_FLOAT32:
896	{	1246	{
897	uint32_t fp;	1247	uint32_t fp;
898	WANT (4);	1248	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1250	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
904		1254
905	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
906	}	1256	}
907		1257
908	case 27:	1258	case MISC_FLOAT64:
909	{	1259	{
910	uint64_t fp;	1260	uint64_t fp;
911	WANT (8);	1261	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1263	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
917		1267
918	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
919	}	1269	}
920		1270
921	// 0..19 unassigned	1271	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
923	default:	1275	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1277	}
926		1278
927	break;	1279	break;
928	}	1280	}
929		1281
…		…
932	}	1284	}
933		1285
934	static SV *	1286	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1288	{
937	dec_t dec = { };	1289	dec_t dec = { 0 };
938	SV *sv;	1290	SV *sv;
939	STRLEN len;	1291	STRLEN len;
940	char *data = SvPVbyte (string, len);	1292	char *data = SvPVbyte (string, len);
941		1293
942	if (len > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
958		1310
959	if (dec.err)	1311	if (dec.err)
960	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
961	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
963	}	1330	}
964		1331
965	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
966		1333
967	return sv;	1334	return sv;
968	}	1335	}
969		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR *self, SV *cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) | *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
970	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1462	// XS interface functions
972		1463
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1465
…		…
982		1473
983	types_true = get_bool ("Types::Serialiser::true" );	1474	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1475	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1476	types_error = get_bool ("Types::Serialiser::error");
986		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
987	sv_cbor = newSVpv ("CBOR", 0);	1480	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1484	}
990		1485
991	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
992		1487
993	void CLONE (...)	1488	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1508	ALIAS:
1014	shrink = F_SHRINK	1509	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1511	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1518	PPCODE:
1020	{	1519	{
1021	if (enable)	1520	if (enable)
1022	self->flags |= ix;	1521	self->flags |= ix;
1023	else	1522	else
…		…
1029	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
1030	ALIAS:	1529	ALIAS:
1031	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1532	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1539	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
1038		1541
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1543	PPCODE:
…		…
1053	XPUSHs (ST (0));	1556	XPUSHs (ST (0));
1054		1557
1055	int get_max_size (CBOR *self)	1558	int get_max_size (CBOR *self)
1056	CODE:	1559	CODE:
1057	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
		1561	OUTPUT:
		1562	RETVAL
		1563
		1564	void filter (CBOR *self, SV *filter = 0)
		1565	PPCODE:
		1566	SvREFCNT_dec (self->filter);
		1567	self->filter = filter ? newSVsv (filter) : filter;
		1568	XPUSHs (ST (0));
		1569
		1570	SV *get_filter (CBOR *self)
		1571	CODE:
		1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1573	OUTPUT:
1059	RETVAL	1574	RETVAL
1060		1575
1061	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1577	PPCODE:
…		…
1077	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
1078	PUSHs (sv);	1593	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1595	}
1081		1596
		1597	void incr_parse (CBOR *self, SV *cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
		1648
		1649	void DESTROY (CBOR *self)
		1650	PPCODE:
		1651	cbor_free (self);
		1652
1082	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
1083		1654
1084	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1659	PPCODE:
1086	{	1660	{
1087	CBOR cbor;	1661	CBOR cbor;
1088	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1665	XPUSHs (scalar);
1091	}	1666	}
1092		1667
1093	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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