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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 1.62 by root, Sat Nov 26 02:11:52 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	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
		198
129	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
130	// encoder	200	// encoder
131		201
132	// structure used for encoding CBOR	202	// structure used for encoding CBOR
133	typedef struct	203	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
137	SV *sv; // result scalar	207	SV *sv; // result scalar
138	CBOR cbor;	208	CBOR cbor;
139	U32 depth; // recursion level	209	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	212	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	213	UV shareable_idx;
143	} enc_t;	214	} enc_t;
144		215
145	ecb_inline void	216	ecb_inline void
146	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
147	{	218	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	220	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
164	static void	235	static void
165	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
166	{	237	{
167	need (enc, 9);	238	need (enc, 9);
168		239
169	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
171	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
172	{	243	{
173	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	245	*enc->cur++ = len;
175	}	246	}
176	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
177	{	248	{
178	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	251	*enc->cur++ = len;
181	}	252	}
182	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
183	{	254	{
184	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	259	*enc->cur++ = len;
189	}	260	}
190	else	261	else
191	{	262	{
192	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	271	*enc->cur++ = len;
201	}	272	}
202	}	273	}
203		274
204	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		282	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	284	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	STRLEN ulen = len;
		286	U8 *p, *pend = (U8 *)str + len;
		287
		288	for (p = (U8 *)str; p < pend; ++p)
		289	ulen += *p >> 7; // count set high bits
		290
		291	encode_uint (enc, MAJOR_TEXT, ulen);
		292
		293	need (enc, ulen);
		294	for (p = (U8 *)str; p < pend; ++p)
		295	if (*p < 0x80)
		296	*enc->cur++ = *p;
		297	else
		298	{
		299	*enc->cur++ = 0xc0 + (*p >> 6);
		300	*enc->cur++ = 0x80 + (*p & 63);
		301	}
		302	}
		303
		304	ecb_inline void
		305	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (upgrade_utf8))
		308	if (!utf8)
		309	{
		310	encode_str_utf8 (enc, utf8, str, len);
		311	return;
		312	}
		313
		314	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	315	need (enc, len);
209	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
210	enc->cur += len;	317	enc->cur += len;
211	}	318	}
212		319
213	ecb_inline void	320	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	321	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	322	{
216	encode_uint (enc, 0xc0, tag);	323	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		324	{
		325	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		326
		327	if (SvOK (*svp))
		328	{
		329	// already registered, use stringref
		330	encode_tag (enc, CBOR_TAG_STRINGREF);
		331	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		332	return;
		333	}
		334	else if (len >= minimum_string_length (enc->stringref_idx))
		335	{
		336	// register only
		337	sv_setuv (*svp, enc->stringref_idx);
		338	++enc->stringref_idx;
		339	}
		340	}
		341
		342	encode_str (enc, upgrade_utf8, utf8, str, len);
217	}	343	}
218		344
219	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
220		346
221	static void	347	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
228		354
229	++enc->depth;	355	++enc->depth;
230		356
231	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		358
		359	if (SvMAGICAL (av))
233	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
234	{	361	{
235	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	364	}
		365	else
		366	for (i = 0; i <= len; ++i)
		367	{
		368	SV *sv = AvARRAY (av)[i];
		369	encode_sv (enc, sv ? sv : &PL_sv_undef);
		370	}
238		371
239	--enc->depth;	372	--enc->depth;
240	}	373	}
241		374
242	static void	375	static void
…		…
251		384
252	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
254		387
255	if (mg)	388	if (mg)
256	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	390	else
258	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
259		392
260	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
261	{	394	{
262	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
264	else	397	else
265	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	398	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
266		399
267	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	400	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
268	}	401	}
269		402
270	if (mg)	403	if (mg)
271	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		405
273	--enc->depth;	406	--enc->depth;
274	}	407	}
275		408
276	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
277	static void	410	static void
278	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
279	{	412	{
280	SvGETMAGIC (sv);	413	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		414
304	svtype svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
305		416
306	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
307	{	418	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	426	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		428
318	HV *stash = SvSTASH (sv);	429	HV *stash = SvSTASH (sv);
319	GV *method;
320		430
321	if (stash == boolean_stash)	431	if (stash == boolean_stash)
322	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	432	{
		433	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		434	return;
		435	}
323	else if (stash == error_stash)	436	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
325	else if (stash == tagged_stash)	441	else if (stash == tagged_stash)
326	{	442	{
327	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		445
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	447	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		448
		449	return;
		450	}
		451	}
		452
		453	if (ecb_expect_false (SvREFCNT (sv) > 1)
		454	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		455	{
		456	if (!enc->shareable)
		457	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		458
		459	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		460
		461	if (SvOK (*svp))
332	}	462	{
		463	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		464	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		465	return;
		466	}
		467	else
		468	{
		469	sv_setuv (*svp, enc->shareable_idx);
		470	++enc->shareable_idx;
		471	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		472	}
		473	}
		474
		475	if (ecb_expect_false (SvOBJECT (sv)))
		476	{
		477	HV *stash = SvSTASH (sv);
		478	GV *method;
		479
		480	if (enc->cbor.flags & F_FORBID_OBJECTS)
		481	croak ("encountered object '%s', but forbid_objects is enabled",
		482	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	484	{
335	dSP;	485	dSP;
336		486
337	ENTER; SAVETMPS; PUSHMARK (SP);	487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
338	// we re-bless the reference to get overload and other niceties right	489	// we re-bless the reference to get overload and other niceties right
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		491
341	PUTBACK;	492	PUTBACK;
342	// G_SCALAR ensures that return value is 1	493	// G_SCALAR ensures that return value is 1
…		…
355	}	506	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	508	{
358	dSP;	509	dSP;
359		510
360	ENTER; SAVETMPS; PUSHMARK (SP);	511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
361	EXTEND (SP, 2);	514	EXTEND (SP, 2);
362	// we re-bless the reference to get overload and other niceties right	515	// we re-bless the reference to get overload and other niceties right
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	517	PUSHs (sv_cbor);
365		518
…		…
370	// catch this surprisingly common error	523	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	524	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));	525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		526
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	528	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		530
378	while (count)	531	while (count)
379	encode_sv (enc, SP[1 - count--]);	532	encode_sv (enc, SP[1 - count--]);
380		533
381	PUTBACK;	534	PUTBACK;
…		…
402	{	555	{
403	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
404		557
405	need (enc, 9);	558	need (enc, 9);
406		559
407	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	562	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
411	{	564	{
412	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
413		566
414	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
415		568
416	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
418		571
419	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
421	}	574	}
422	else	575	else
423	{	576	{
424	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
425		578
426	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
427		580
428	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
430		583
431	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
440		593
441	if (SvPOKp (sv))	594	if (SvPOKp (sv))
442	{	595	{
443	STRLEN len;	596	STRLEN len;
444	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	599	}
447	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	601	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
450	{	603	{
451	if (SvIsUV (sv))	604	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	608	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	610	}
458	else if (SvROK (sv))	611	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	613	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	617	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	618	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	620	}
468		621
469	static SV *	622	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
471	{	624	{
472	enc_t enc = { };	625	enc_t enc = { 0 };
473		626
474	enc.cbor = *cbor;	627	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
478		631
479	SvPOK_only (enc.sv);	632	SvPOK_only (enc.sv);
		633
		634	if (cbor->flags & F_PACK_STRINGS)
		635	{
		636	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		637	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		638	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		639	}
		640
480	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
481		642
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	644	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		645
…		…
499	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
500	CBOR cbor;	661	CBOR cbor;
501	U32 depth; // recursion depth	662	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
503	AV *shareable;	664	AV *shareable;
		665	AV *stringref;
		666	SV *decode_tagged;
		667	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	668	} dec_t;
505		669
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	670	// set dec->err to ERRSV
		671	ecb_cold static void
		672	err_errsv (dec_t *dec)
		673	{
		674	if (!dec->err)
		675	{
		676	dec->err_sv = newSVsv (ERRSV);
507		677
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	678	// chop off the trailing \n
		679	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		680	*SvEND (dec->err_sv) = 0;
509		681
		682	dec->err = SvPVutf8_nolen (dec->err_sv);
		683	}
		684	}
		685
		686	// the following functions are used to reduce code size and help the compiler to optimise
		687	ecb_cold static void
		688	err_set (dec_t *dec, const char *reason)
		689	{
		690	if (!dec->err)
		691	dec->err = reason;
		692	}
		693
		694	ecb_cold static void
		695	err_unexpected_end (dec_t *dec)
		696	{
		697	err_set (dec, "unexpected end of CBOR data");
		698	}
		699
		700	ecb_cold static void
		701	err_nesting_exceeded (dec_t *dec)
		702	{
		703	err_set (dec, ERR_NESTING_EXCEEDED);
		704	}
		705
		706	#define ERR_DO(do) SB do; goto fail; SE
		707	#define ERR(reason) ERR_DO (err_set (dec, reason))
		708	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		709
		710	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		711
510	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	712	#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	713	#define DEC_DEC_DEPTH --dec->depth
512		714
513	static UV	715	static UV
514	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
515	{	717	{
516	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
517	{	719	++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		720
523	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
524	WANT (2);	725	WANT (1);
525	dec->cur += 2;	726	dec->cur += 1;
526	return dec->cur[-1];	727	return dec->cur[-1];
527		728	}
528	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
529	WANT (3);	731	WANT (2);
530	dec->cur += 3;	732	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
533		735	}
534	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
535	WANT (5);	738	WANT (4);
536	dec->cur += 5;	739	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
541		744	}
542	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
543	WANT (9);	747	WANT (8);
544	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
545	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
549	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
553		763	}
554	default:	764	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		766
558	fail:	767	fail:
559	return 0;	768	return 0;
560	}	769	}
561		770
…		…
566	{	775	{
567	AV *av = newAV ();	776	AV *av = newAV ();
568		777
569	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
570		779
571	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	781	{
573	++dec->cur;	782	++dec->cur;
574		783
575	for (;;)	784	for (;;)
576	{	785	{
577	WANT (1);	786	WANT (1);
578		787
579	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
580	{	789	{
581	++dec->cur;	790	++dec->cur;
582	break;	791	break;
583	}	792	}
584		793
585	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
586	}	795	}
587	}	796	}
588	else	797	else
589	{	798	{
590	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
591		800
		801	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);	802	av_fill (av, len - 1);
593		803
594	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
596	}	806	}
…		…
606		816
607	static void	817	static void
608	decode_he (dec_t *dec, HV *hv)	818	decode_he (dec_t *dec, HV *hv)
609	{	819	{
610	// for speed reasons, we specialcase single-string	820	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	821	// byte or utf-8 strings as keys, but only when !stringref
612		822
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	823	if (ecb_expect_true (!dec->stringref))
		824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	825	{
615	I32 len = decode_uint (dec);	826	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	827	char *key = (char *)dec->cur;
617		828
		829	WANT (len);
618	dec->cur += len;	830	dec->cur += len;
619		831
620	hv_store (hv, key, len, decode_sv (dec), 0);	832	hv_store (hv, key, len, decode_sv (dec), 0);
		833
		834	return;
621	}	835	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	837	{
624	I32 len = decode_uint (dec);	838	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	839	char *key = (char *)dec->cur;
626		840
		841	WANT (len);
627	dec->cur += len;	842	dec->cur += len;
628		843
		844	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		845	if (!is_utf8_string (key, len))
		846	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		847
629	hv_store (hv, key, -len, decode_sv (dec), 0);	848	hv_store (hv, key, -len, decode_sv (dec), 0);
		849
		850	return;
630	}	851	}
631	else	852
632	{
633	SV *k = decode_sv (dec);	853	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	854	SV *v = decode_sv (dec);
635		855
		856	// we leak memory if uncaught exceptions are thrown by random magical
		857	// methods, and this is hopefully the only place where it can happen,
		858	// so if there is a chance of an exception, take the very slow path.
		859	// since catching exceptions is "undocumented/internal/forbidden" by
		860	// the new p5p powers, we need to call out to a perl function :/
		861	if (ecb_expect_false (SvAMAGIC (k)))
		862	{
		863	dSP;
		864
		865	ENTER; SAVETMPS;
		866	PUSHMARK (SP);
		867	EXTEND (SP, 3);
		868	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		869	PUSHs (sv_2mortal (k));
		870	PUSHs (sv_2mortal (v));
		871
		872	PUTBACK;
		873	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		874	SPAGAIN;
		875
		876	FREETMPS; LEAVE;
		877
		878	if (SvTRUE (ERRSV))
		879	ERR_ERRSV;
		880
		881	return;
		882	}
		883
636	hv_store_ent (hv, k, v, 0);	884	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	885	SvREFCNT_dec (k);
638	}	886
		887	fail:
		888	;
639	}	889	}
640		890
641	static SV *	891	static SV *
642	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
643	{	893	{
644	HV *hv = newHV ();	894	HV *hv = newHV ();
645		895
646	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
647		897
648	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	899	{
650	++dec->cur;	900	++dec->cur;
651		901
652	for (;;)	902	for (;;)
653	{	903	{
654	WANT (1);	904	WANT (1);
655		905
656	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	907	{
658	++dec->cur;	908	++dec->cur;
659	break;	909	break;
660	}	910	}
661		911
662	decode_he (dec, hv);	912	decode_he (dec, hv);
663	}	913	}
664	}	914	}
665	else	915	else
666	{	916	{
667	int pairs = decode_uint (dec);	917	UV pairs = decode_uint (dec);
		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
668		920
669	while (pairs--)	921	while (pairs--)
670	decode_he (dec, hv);	922	decode_he (dec, hv);
671	}	923	}
672		924
…		…
682	static SV *	934	static SV *
683	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
684	{	936	{
685	SV *sv = 0;	937	SV *sv = 0;
686		938
687	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
688	{	940	{
		941	// indefinite length strings
689	++dec->cur;	942	++dec->cur;
690		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
691	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
692		947
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	948	for (;;)
695	{	949	{
696	WANT (1);	950	WANT (1);
697		951
698	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	954	{
700	++dec->cur;	955	++dec->cur;
701	break;	956	break;
702	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		960
704	sv_catsv (sv, decode_sv (dec));	961	STRLEN len = decode_uint (dec);
		962
		963	WANT (len);
		964	sv_catpvn (sv, dec->cur, len);
		965	dec->cur += len;
705	}	966	}
706	}	967	}
707	else	968	else
708	{	969	{
709	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
710		971
711	WANT (len);	972	WANT (len);
712	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	974	dec->cur += len;
		975
		976	if (ecb_expect_false (dec->stringref)
		977	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		978	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	979	}
715		980
716	if (utf8)	981	if (utf8)
		982	{
		983	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		984	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		985	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		986
717	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
718		989
719	return sv;	990	return sv;
720		991
721	fail:	992	fail:
722	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1003	WANT (1);
733		1004
734	switch (tag)	1005	switch (tag)
735	{	1006	{
736	case CBOR_TAG_MAGIC:	1007	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
738		1010
739	case CBOR_TAG_INDIRECTION:	1011	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1012	sv = newRV_noinc (decode_sv (dec));
		1013	break;
		1014
		1015	case CBOR_TAG_STRINGREF_NAMESPACE:
		1016	{
		1017	// do nmot use SAVETMPS/FREETMPS, as these will
		1018	// erase mortalised caches, e.g. "shareable"
		1019	ENTER;
		1020
		1021	SAVESPTR (dec->stringref);
		1022	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1023
		1024	sv = decode_sv (dec);
		1025
		1026	LEAVE;
		1027	}
		1028	break;
		1029
		1030	case CBOR_TAG_STRINGREF:
		1031	{
		1032	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1033	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1034
		1035	UV idx = decode_uint (dec);
		1036
		1037	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1038	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1039
		1040	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1041	}
		1042	break;
741		1043
742	case CBOR_TAG_VALUE_SHAREABLE:	1044	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1045	{
744	if (ecb_expect_false (!dec->shareable))	1046	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1047	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1048
		1049	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1050	{
747	sv = newSV (0);	1051	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1052	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1053
750	SV *osv = decode_sv (dec);	1054	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1055	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1056	SvREFCNT_dec_NN (osv);
753	}	1057	}
754		1058	else
755	return sv;	1059	{
		1060	av_push (dec->shareable, &PL_sv_undef);
		1061	int idx = AvFILLp (dec->shareable);
		1062	sv = decode_sv (dec);
		1063	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1064	}
		1065	}
		1066	break;
756		1067
757	case CBOR_TAG_VALUE_SHAREDREF:	1068	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1069	{
759	if ((*dec->cur >> 5) != 0)	1070	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1071	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1072
762	UV idx = decode_uint (dec);	1073	UV idx = decode_uint (dec);
763		1074
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1075	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1076	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1077
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1078	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1079
		1080	if (sv == &PL_sv_undef)
		1081	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	1082	}
		1083	break;
769		1084
770	case CBOR_TAG_PERL_OBJECT:	1085	case CBOR_TAG_PERL_OBJECT:
771	{	1086	{
		1087	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1088	goto filter;
		1089
772	sv = decode_sv (dec);	1090	sv = decode_sv (dec);
773		1091
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1093	ERR ("corrupted CBOR data (non-array perl object)");
776		1094
…		…
786	if (!method)	1104	if (!method)
787	ERR ("cannot decode perl-object (package does not have a THAW method)");	1105	ERR ("cannot decode perl-object (package does not have a THAW method)");
788		1106
789	dSP;	1107	dSP;
790		1108
791	ENTER; SAVETMPS; PUSHMARK (SP);	1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1111	EXTEND (SP, len + 1);
793	// we re-bless the reference to get overload and other niceties right	1112	// we re-bless the reference to get overload and other niceties right
794	PUSHs (*av_fetch (av, 0, 1));	1113	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1114	PUSHs (sv_cbor);
796		1115
…		…
804	SPAGAIN;	1123	SPAGAIN;
805		1124
806	if (SvTRUE (ERRSV))	1125	if (SvTRUE (ERRSV))
807	{	1126	{
808	FREETMPS; LEAVE;	1127	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1128	ERR_ERRSV;
810	}	1129	}
811		1130
812	SvREFCNT_dec (sv);	1131	SvREFCNT_dec (sv);
813	sv = SvREFCNT_inc (POPs);	1132	sv = SvREFCNT_inc (POPs);
814		1133
815	PUTBACK;	1134	PUTBACK;
816		1135
817	FREETMPS; LEAVE;	1136	FREETMPS; LEAVE;
818
819	return sv;
820	}	1137	}
		1138	break;
821		1139
822	default:	1140	default:
		1141	filter:
823	{	1142	{
		1143	SV *tag_sv = newSVuv (tag);
		1144
824	sv = decode_sv (dec);	1145	sv = decode_sv (dec);
825		1146
		1147	dSP;
		1148	ENTER; SAVETMPS;
		1149	SAVESTACK_POS ();
		1150	PUSHMARK (SP);
		1151	EXTEND (SP, 2);
		1152	PUSHs (tag_sv);
		1153	PUSHs (sv);
		1154
		1155	PUTBACK;
		1156	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1157	SPAGAIN;
		1158
		1159	if (SvTRUE (ERRSV))
		1160	{
		1161	SvREFCNT_dec (tag_sv);
		1162	FREETMPS; LEAVE;
		1163	ERR_ERRSV;
		1164	}
		1165
		1166	if (count)
		1167	{
		1168	SvREFCNT_dec (tag_sv);
		1169	SvREFCNT_dec (sv);
		1170	sv = SvREFCNT_inc (POPs);
		1171	}
		1172	else
		1173	{
826	AV *av = newAV ();	1174	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1175	av_push (av, tag_sv);
828	av_push (av, sv);	1176	av_push (av, sv);
829		1177
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1179	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
		1187	}
		1188	break;
836	}	1189	}
		1190
		1191	return sv;
837		1192
838	fail:	1193	fail:
839	SvREFCNT_dec (sv);	1194	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1195	return &PL_sv_undef;
841	}	1196	}
…		…
843	static SV *	1198	static SV *
844	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
845	{	1200	{
846	WANT (1);	1201	WANT (1);
847		1202
848	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1204	{
850	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1212
858	case 4: // array	1213	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)	1214	switch (*dec->cur++ & MINOR_MASK)
866	{	1215	{
867	case 20:	1216	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1217	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1218	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1219	#endif
871	return newSVsv (types_false);	1220	return newSVsv (types_false);
872	case 21:	1221	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1222	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1223	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1224	#endif
876	return newSVsv (types_true);	1225	return newSVsv (types_true);
877	case 22:	1226	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
879	case 23:	1228	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1229	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1230	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1231	#endif
883	return newSVsv (types_error);	1232	return newSVsv (types_error);
884		1233
885	case 25:	1234	case MISC_FLOAT16:
886	{	1235	{
887	WANT (2);	1236	WANT (2);
888		1237
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1239	dec->cur += 2;
891		1240
892	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
893	}	1242	}
894		1243
895	case 26:	1244	case MISC_FLOAT32:
896	{	1245	{
897	uint32_t fp;	1246	uint32_t fp;
898	WANT (4);	1247	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1249	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
904		1253
905	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
906	}	1255	}
907		1256
908	case 27:	1257	case MISC_FLOAT64:
909	{	1258	{
910	uint64_t fp;	1259	uint64_t fp;
911	WANT (8);	1260	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1262	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
917		1266
918	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
919	}	1268	}
920		1269
921	// 0..19 unassigned	1270	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1271	// 24 reserved + unassigned simple (reserved values are not encodable)
		1272	// 28-30 unassigned misc
		1273	// 31 break code
923	default:	1274	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1276	}
926		1277
927	break;	1278	break;
928	}	1279	}
929		1280
…		…
932	}	1283	}
933		1284
934	static SV *	1285	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1287	{
937	dec_t dec = { };	1288	dec_t dec = { 0 };
938	SV *sv;	1289	SV *sv;
939	STRLEN len;	1290	STRLEN len;
940	char *data = SvPVbyte (string, len);	1291	char *data = SvPVbyte (string, len);
941		1292
942	if (len > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
958		1309
959	if (dec.err)	1310	if (dec.err)
960	{	1311	{
		1312	if (dec.shareable)
		1313	{
		1314	// need to break cyclic links, which would all be in shareable
		1315	int i;
		1316	SV **svp;
		1317
		1318	for (i = av_len (dec.shareable) + 1; i--; )
		1319	if ((svp = av_fetch (dec.shareable, i, 0)))
		1320	sv_setsv (*svp, &PL_sv_undef);
		1321	}
		1322
961	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1328	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
963	}	1329	}
964		1330
965	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
966		1332
967	return sv;	1333	return sv;
968	}	1334	}
969		1335
		1336	/////////////////////////////////////////////////////////////////////////////
		1337	// incremental parser
		1338
		1339	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1340
		1341	// returns 0 for notyet, 1 for success or error
		1342	static int
		1343	incr_parse (CBOR *self, SV *cborstr)
		1344	{
		1345	STRLEN cur;
		1346	SvPV (cborstr, cur);
		1347
		1348	while (ecb_expect_true (self->incr_need <= cur))
		1349	{
		1350	// table of integer count bytes
		1351	static I8 incr_len[MINOR_MASK + 1] = {
		1352	0, 0, 0, 0, 0, 0, 0, 0,
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	1, 2, 4, 8,-1,-1,-1,-2
		1356	};
		1357
		1358	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1359	U8 m = *p & MINOR_MASK;
		1360	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1361	I8 ilen = incr_len[m];
		1362
		1363	self->incr_need = self->incr_pos + 1;
		1364
		1365	if (ecb_expect_false (ilen < 0))
		1366	{
		1367	if (m != MINOR_INDEF)
		1368	return 1; // error
		1369
		1370	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1371	{
		1372	if (count >= 0)
		1373	return 1; // error
		1374
		1375	count = 1;
		1376	}
		1377	else
		1378	{
		1379	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1380	count = -1;
		1381	}
		1382	}
		1383	else
		1384	{
		1385	self->incr_need += ilen;
		1386	if (ecb_expect_false (self->incr_need > cur))
		1387	return 0;
		1388
		1389	int major = *p >> MAJOR_SHIFT;
		1390
		1391	switch (major)
		1392	{
		1393	case MAJOR_TAG >> MAJOR_SHIFT:
		1394	++count; // tags merely prefix another value
		1395	break;
		1396
		1397	case MAJOR_BYTES >> MAJOR_SHIFT:
		1398	case MAJOR_TEXT >> MAJOR_SHIFT:
		1399	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1400	case MAJOR_MAP >> MAJOR_SHIFT:
		1401	{
		1402	UV len;
		1403
		1404	if (ecb_expect_false (ilen))
		1405	{
		1406	len = 0;
		1407
		1408	do {
		1409	len = (len << 8) | *++p;
		1410	} while (--ilen);
		1411	}
		1412	else
		1413	len = m;
		1414
		1415	switch (major)
		1416	{
		1417	case MAJOR_BYTES >> MAJOR_SHIFT:
		1418	case MAJOR_TEXT >> MAJOR_SHIFT:
		1419	self->incr_need += len;
		1420	if (ecb_expect_false (self->incr_need > cur))
		1421	return 0;
		1422
		1423	break;
		1424
		1425	case MAJOR_MAP >> MAJOR_SHIFT:
		1426	len <<= 1;
		1427	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1428	if (len)
		1429	{
		1430	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1431	count = len + 1;
		1432	}
		1433	break;
		1434	}
		1435	}
		1436	}
		1437	}
		1438
		1439	self->incr_pos = self->incr_need;
		1440
		1441	if (count > 0)
		1442	{
		1443	while (!--count)
		1444	{
		1445	if (!AvFILLp (self->incr_count))
		1446	return 1; // done
		1447
		1448	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1449	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1450	}
		1451
		1452	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1453	}
		1454	}
		1455
		1456	return 0;
		1457	}
		1458
		1459
970	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1461	// XS interface functions
972		1462
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1464
…		…
982		1472
983	types_true = get_bool ("Types::Serialiser::true" );	1473	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1474	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1475	types_error = get_bool ("Types::Serialiser::error");
986		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
987	sv_cbor = newSVpv ("CBOR", 0);	1479	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1483	}
990		1484
991	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
992		1486
993	void CLONE (...)	1487	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1507	ALIAS:
1014	shrink = F_SHRINK	1508	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1509	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1510	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1511	allow_cycles = F_ALLOW_CYCLES
		1512	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1513	pack_strings = F_PACK_STRINGS
		1514	text_keys = F_TEXT_KEYS
		1515	text_strings = F_TEXT_STRINGS
		1516	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1517	PPCODE:
1020	{	1518	{
1021	if (enable)	1519	if (enable)
1022	self->flags |= ix;	1520	self->flags |= ix;
1023	else	1521	else
…		…
1029	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
1030	ALIAS:	1528	ALIAS:
1031	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1530	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1531	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1532	get_allow_cycles = F_ALLOW_CYCLES
		1533	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	1534	get_pack_strings = F_PACK_STRINGS
		1535	get_text_keys = F_TEXT_KEYS
		1536	get_text_strings = F_TEXT_STRINGS
		1537	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1538	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
1038		1540
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1542	PPCODE:
…		…
1053	XPUSHs (ST (0));	1555	XPUSHs (ST (0));
1054		1556
1055	int get_max_size (CBOR *self)	1557	int get_max_size (CBOR *self)
1056	CODE:	1558	CODE:
1057	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
		1560	OUTPUT:
		1561	RETVAL
		1562
		1563	void filter (CBOR *self, SV *filter = 0)
		1564	PPCODE:
		1565	SvREFCNT_dec (self->filter);
		1566	self->filter = filter ? newSVsv (filter) : filter;
		1567	XPUSHs (ST (0));
		1568
		1569	SV *get_filter (CBOR *self)
		1570	CODE:
		1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1572	OUTPUT:
1059	RETVAL	1573	RETVAL
1060		1574
1061	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1576	PPCODE:
…		…
1077	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
1078	PUSHs (sv);	1592	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1594	}
1081		1595
		1596	void incr_parse (CBOR *self, SV *cborstr)
		1597	ALIAS:
		1598	incr_parse_multiple = 1
		1599	PPCODE:
		1600	{
		1601	if (SvUTF8 (cborstr))
		1602	sv_utf8_downgrade (cborstr, 0);
		1603
		1604	if (!self->incr_count)
		1605	{
		1606	self->incr_count = newAV ();
		1607	self->incr_pos = 0;
		1608	self->incr_need = 1;
		1609
		1610	av_push (self->incr_count, newSViv (1));
		1611	}
		1612
		1613	do
		1614	{
		1615	if (!incr_parse (self, cborstr))
		1616	{
		1617	if (self->incr_need > self->max_size && self->max_size)
		1618	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1619	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1620
		1621	break;
		1622	}
		1623
		1624	SV *sv;
		1625	char *offset;
		1626
		1627	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1628	XPUSHs (sv);
		1629
		1630	sv_chop (cborstr, offset);
		1631
		1632	av_clear (self->incr_count);
		1633	av_push (self->incr_count, newSViv (1));
		1634
		1635	self->incr_pos = 0;
		1636	self->incr_need = self->incr_pos + 1;
		1637	}
		1638	while (ix);
		1639	}
		1640
		1641	void incr_reset (CBOR *self)
		1642	CODE:
		1643	{
		1644	SvREFCNT_dec (self->incr_count);
		1645	self->incr_count = 0;
		1646	}
		1647
		1648	void DESTROY (CBOR *self)
		1649	PPCODE:
		1650	cbor_free (self);
		1651
1082	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
1083		1653
1084	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1658	PPCODE:
1086	{	1659	{
1087	CBOR cbor;	1660	CBOR cbor;
1088	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1664	XPUSHs (scalar);
1091	}	1665	}
1092		1666
1093	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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