ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs.
Revision 1.60 by root, Sat Nov 26 00:47:02 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	75	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	76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		77
37	// rfc7049	78	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
44		85
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		90
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		96
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	98	};
58		99
59	#define F_SHRINK 0x00000001UL	100	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	105	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	106	#define F_TEXT_KEYS 0x00000040UL
		107	#define F_TEXT_STRINGS 0x00000080UL
		108	#define F_VALIDATE_UTF8 0x00000100UL
64		109
65	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
66		111
67	#define SB do {	112	#define SB do {
68	#define SE } while (0)	113	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
82	#endif	127	#endif
83		128
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	129	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		131
87	typedef struct {	132	typedef struct {
88	U32 flags;	133	U32 flags;
89	U32 max_depth;	134	U32 max_depth;
90	STRLEN max_size;	135	STRLEN max_size;
		136	SV *filter;
		137
		138	// for the incremental parser
		139	STRLEN incr_pos; // the current offset into the text
		140	STRLEN incr_need; // minimum bytes needed to decode
		141	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	142	} CBOR;
92		143
93	ecb_inline void	144	ecb_inline void
94	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
95	{	146	{
96	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	148	cbor->max_depth = 512;
		149	}
		150
		151	ecb_inline void
		152	cbor_free (CBOR *cbor)
		153	{
		154	SvREFCNT_dec (cbor->filter);
		155	SvREFCNT_dec (cbor->incr_count);
98	}	156	}
99		157
100	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	159	// utility functions
102		160
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	183	#endif
126	}	184	}
127	}	185	}
128		186
		187	// minimum length of a string to be registered for stringref
		188	ecb_inline int
		189	minimum_string_length (UV idx)
		190	{
		191	return idx > 23
		192	? idx > 0xffU
		193	? idx > 0xffffU
		194	? idx > 0xffffffffU
		195	? 11
		196	: 7
		197	: 5
		198	: 4
		199	: 3;
		200	}
		201
129	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
130	// encoder	203	// encoder
131		204
132	// structure used for encoding CBOR	205	// structure used for encoding CBOR
133	typedef struct	206	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
137	SV *sv; // result scalar	210	SV *sv; // result scalar
138	CBOR cbor;	211	CBOR cbor;
139	U32 depth; // recursion level	212	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	215	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	216	UV shareable_idx;
143	} enc_t;	217	} enc_t;
144		218
145	ecb_inline void	219	ecb_inline void
…		…
164	static void	238	static void
165	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
166	{	240	{
167	need (enc, 9);	241	need (enc, 9);
168		242
169	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
171	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
172	{	246	{
173	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	248	*enc->cur++ = len;
175	}	249	}
176	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
177	{	251	{
178	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	254	*enc->cur++ = len;
181	}	255	}
182	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
183	{	257	{
184	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	262	*enc->cur++ = len;
189	}	263	}
190	else	264	else
191	{	265	{
192	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	274	*enc->cur++ = len;
201	}	275	}
202	}	276	}
203		277
204	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	287	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	318	need (enc, len);
209	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
210	enc->cur += len;	320	enc->cur += len;
211	}	321	}
212		322
213	ecb_inline void	323	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	325	{
216	encode_uint (enc, 0xc0, tag);	326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
217	}	346	}
218		347
219	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
220		349
221	static void	350	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
228		357
229	++enc->depth;	358	++enc->depth;
230		359
231	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		361
		362	if (SvMAGICAL (av))
233	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
234	{	364	{
235	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
238		374
239	--enc->depth;	375	--enc->depth;
240	}	376	}
241		377
242	static void	378	static void
…		…
251		387
252	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
254		390
255	if (mg)	391	if (mg)
256	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	393	else
258	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
259		395
260	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
261	{	397	{
262	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
264	else	400	else
265	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
266		402
267	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
268	}	404	}
269		405
270	if (mg)	406	if (mg)
271	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		408
273	--enc->depth;	409	--enc->depth;
274	}	410	}
275		411
276	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
277	static void	413	static void
278	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
279	{	415	{
280	SvGETMAGIC (sv);	416	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		417
304	svtype svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
305		419
306	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
307	{	421	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	429	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		431
318	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
319	GV *method;
320		433
321	if (stash == boolean_stash)	434	if (stash == boolean_stash)
322	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
323	else if (stash == error_stash)	439	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
325	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
326	{	445	{
327	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		448
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (!enc->shareable)
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
332	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	487	{
335	dSP;	488	dSP;
336		489
337	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
338	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		494
341	PUTBACK;	495	PUTBACK;
342	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
355	}	509	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	511	{
358	dSP;	512	dSP;
359		513
360	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
361	EXTEND (SP, 2);	517	EXTEND (SP, 2);
362	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
365		521
…		…
370	// catch this surprisingly common error	526	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	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));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		529
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		533
378	while (count)	534	while (count)
379	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
380		536
381	PUTBACK;	537	PUTBACK;
…		…
402	{	558	{
403	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
404		560
405	need (enc, 9);	561	need (enc, 9);
406		562
407	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	565	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
411	{	567	{
412	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
413		569
414	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
415		571
416	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
418		574
419	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
421	}	577	}
422	else	578	else
423	{	579	{
424	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
425		581
426	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
427		583
428	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
430		586
431	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
440		596
441	if (SvPOKp (sv))	597	if (SvPOKp (sv))
442	{	598	{
443	STRLEN len;	599	STRLEN len;
444	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	602	}
447	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	604	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
450	{	606	{
451	if (SvIsUV (sv))	607	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	611	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	613	}
458	else if (SvROK (sv))	614	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	616	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	620	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	623	}
468		624
469	static SV *	625	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
471	{	627	{
472	enc_t enc = { };	628	enc_t enc = { 0 };
473		629
474	enc.cbor = *cbor;	630	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
478		634
479	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
480	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
481		645
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		648
…		…
499	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
500	CBOR cbor;	664	CBOR cbor;
501	U32 depth; // recursion depth	665	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
503	AV *shareable;	667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	671	} dec_t;
505		672
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
507		680
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
509		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	ecb_cold static void
		704	err_nesting_exceeded (dec_t *dec)
		705	{
		706	err_set (dec, ERR_NESTING_EXCEEDED);
		707	}
		708
		709	#define ERR_DO(do) SB do; goto fail; SE
		710	#define ERR(reason) ERR_DO (err_set (dec, reason))
		711	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		712
		713	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		714
510	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	715	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
511	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
512		717
513	static UV	718	static UV
514	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
515	{	720	{
516	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
517	{	722	++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		723
523	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
524	WANT (2);	728	WANT (1);
525	dec->cur += 2;	729	dec->cur += 1;
526	return dec->cur[-1];	730	return dec->cur[-1];
527		731	}
528	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
529	WANT (3);	734	WANT (2);
530	dec->cur += 3;	735	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
533		738	}
534	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
535	WANT (5);	741	WANT (4);
536	dec->cur += 5;	742	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
541		747	}
542	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
543	WANT (9);	750	WANT (8);
544	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
545	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
549	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
553		766	}
554	default:	767	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		769
558	fail:	770	fail:
559	return 0;	771	return 0;
560	}	772	}
561		773
…		…
566	{	778	{
567	AV *av = newAV ();	779	AV *av = newAV ();
568		780
569	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
570		782
571	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	784	{
573	++dec->cur;	785	++dec->cur;
574		786
575	for (;;)	787	for (;;)
576	{	788	{
577	WANT (1);	789	WANT (1);
578		790
579	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
580	{	792	{
581	++dec->cur;	793	++dec->cur;
582	break;	794	break;
583	}	795	}
584		796
585	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
586	}	798	}
587	}	799	}
588	else	800	else
589	{	801	{
590	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
591		803
		804	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);	805	av_fill (av, len - 1);
593		806
594	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
596	}	809	}
…		…
606		819
607	static void	820	static void
608	decode_he (dec_t *dec, HV *hv)	821	decode_he (dec_t *dec, HV *hv)
609	{	822	{
610	// for speed reasons, we specialcase single-string	823	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	824	// byte or utf-8 strings as keys, but only when !stringref
612		825
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	826	if (ecb_expect_true (!dec->stringref))
		827	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	828	{
615	I32 len = decode_uint (dec);	829	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	830	char *key = (char *)dec->cur;
617		831
		832	WANT (len);
618	dec->cur += len;	833	dec->cur += len;
619		834
620	hv_store (hv, key, len, decode_sv (dec), 0);	835	hv_store (hv, key, len, decode_sv (dec), 0);
		836
		837	return;
621	}	838	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	839	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	840	{
624	I32 len = decode_uint (dec);	841	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	842	char *key = (char *)dec->cur;
626		843
		844	WANT (len);
627	dec->cur += len;	845	dec->cur += len;
628		846
		847	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		848	if (!is_utf8_string (key, len))
		849	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		850
629	hv_store (hv, key, -len, decode_sv (dec), 0);	851	hv_store (hv, key, -len, decode_sv (dec), 0);
		852
		853	return;
630	}	854	}
631	else	855
632	{
633	SV *k = decode_sv (dec);	856	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	857	SV *v = decode_sv (dec);
635		858
		859	// we leak memory if uncaught exceptions are thrown by random magical
		860	// methods, and this is hopefully the only place where it can happen,
		861	// so if there is a chance of an exception, take the very slow path.
		862	// since catching exceptions is "undocumented/internal/forbidden" by
		863	// the new p5p powers, we need to call out to a perl function :/
		864	if (ecb_expect_false (SvAMAGIC (k)))
		865	{
		866	dSP;
		867
		868	ENTER; SAVETMPS;
		869	PUSHMARK (SP);
		870	EXTEND (SP, 3);
		871	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		872	PUSHs (sv_2mortal (k));
		873	PUSHs (sv_2mortal (v));
		874
		875	PUTBACK;
		876	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		877	SPAGAIN;
		878
		879	FREETMPS; LEAVE;
		880
		881	if (SvTRUE (ERRSV))
		882	ERR_ERRSV;
		883
		884	return;
		885	}
		886
636	hv_store_ent (hv, k, v, 0);	887	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	888	SvREFCNT_dec (k);
638	}	889
		890	fail:
		891	;
639	}	892	}
640		893
641	static SV *	894	static SV *
642	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
643	{	896	{
644	HV *hv = newHV ();	897	HV *hv = newHV ();
645		898
646	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
647		900
648	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	902	{
650	++dec->cur;	903	++dec->cur;
651		904
652	for (;;)	905	for (;;)
653	{	906	{
654	WANT (1);	907	WANT (1);
655		908
656	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	910	{
658	++dec->cur;	911	++dec->cur;
659	break;	912	break;
660	}	913	}
661		914
662	decode_he (dec, hv);	915	decode_he (dec, hv);
663	}	916	}
664	}	917	}
665	else	918	else
666	{	919	{
667	int pairs = decode_uint (dec);	920	UV pairs = decode_uint (dec);
		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
668		923
669	while (pairs--)	924	while (pairs--)
670	decode_he (dec, hv);	925	decode_he (dec, hv);
671	}	926	}
672		927
…		…
682	static SV *	937	static SV *
683	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
684	{	939	{
685	SV *sv = 0;	940	SV *sv = 0;
686		941
687	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
688	{	943	{
		944	// indefinite length strings
689	++dec->cur;	945	++dec->cur;
690		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
691	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
692		950
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	951	for (;;)
695	{	952	{
696	WANT (1);	953	WANT (1);
697		954
698	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	957	{
700	++dec->cur;	958	++dec->cur;
701	break;	959	break;
702	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		963
704	sv_catsv (sv, decode_sv (dec));	964	STRLEN len = decode_uint (dec);
		965
		966	WANT (len);
		967	sv_catpvn (sv, dec->cur, len);
		968	dec->cur += len;
705	}	969	}
706	}	970	}
707	else	971	else
708	{	972	{
709	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
710		974
711	WANT (len);	975	WANT (len);
712	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	977	dec->cur += len;
		978
		979	if (ecb_expect_false (dec->stringref)
		980	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		981	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	982	}
715		983
716	if (utf8)	984	if (utf8)
		985	{
		986	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		987	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		988	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		989
717	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
718		992
719	return sv;	993	return sv;
720		994
721	fail:	995	fail:
722	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1006	WANT (1);
733		1007
734	switch (tag)	1008	switch (tag)
735	{	1009	{
736	case CBOR_TAG_MAGIC:	1010	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1011	sv = decode_sv (dec);
		1012	break;
738		1013
739	case CBOR_TAG_INDIRECTION:	1014	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1015	sv = newRV_noinc (decode_sv (dec));
		1016	break;
		1017
		1018	case CBOR_TAG_STRINGREF_NAMESPACE:
		1019	{
		1020	// do nmot use SAVETMPS/FREETMPS, as these will
		1021	// erase mortalised caches, e.g. "shareable"
		1022	ENTER;
		1023
		1024	SAVESPTR (dec->stringref);
		1025	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1026
		1027	sv = decode_sv (dec);
		1028
		1029	LEAVE;
		1030	}
		1031	break;
		1032
		1033	case CBOR_TAG_STRINGREF:
		1034	{
		1035	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1036	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1037
		1038	UV idx = decode_uint (dec);
		1039
		1040	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1041	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1042
		1043	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1044	}
		1045	break;
741		1046
742	case CBOR_TAG_VALUE_SHAREABLE:	1047	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1048	{
744	if (ecb_expect_false (!dec->shareable))	1049	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1050	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1051
		1052	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1053	{
747	sv = newSV (0);	1054	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1055	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1056
750	SV *osv = decode_sv (dec);	1057	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1058	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1059	SvREFCNT_dec_NN (osv);
753	}	1060	}
754		1061	else
755	return sv;	1062	{
		1063	av_push (dec->shareable, &PL_sv_undef);
		1064	int idx = AvFILLp (dec->shareable);
		1065	sv = decode_sv (dec);
		1066	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1067	}
		1068	}
		1069	break;
756		1070
757	case CBOR_TAG_VALUE_SHAREDREF:	1071	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1072	{
759	if ((*dec->cur >> 5) != 0)	1073	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1074	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1075
762	UV idx = decode_uint (dec);	1076	UV idx = decode_uint (dec);
763		1077
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1078	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1079	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1080
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1081	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1082
		1083	if (sv == &PL_sv_undef)
		1084	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	1085	}
		1086	break;
769		1087
770	case CBOR_TAG_PERL_OBJECT:	1088	case CBOR_TAG_PERL_OBJECT:
771	{	1089	{
		1090	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1091	goto filter;
		1092
772	sv = decode_sv (dec);	1093	sv = decode_sv (dec);
773		1094
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1096	ERR ("corrupted CBOR data (non-array perl object)");
776		1097
…		…
786	if (!method)	1107	if (!method)
787	ERR ("cannot decode perl-object (package does not have a THAW method)");	1108	ERR ("cannot decode perl-object (package does not have a THAW method)");
788		1109
789	dSP;	1110	dSP;
790		1111
791	ENTER; SAVETMPS; PUSHMARK (SP);	1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1114	EXTEND (SP, len + 1);
793	// we re-bless the reference to get overload and other niceties right	1115	// we re-bless the reference to get overload and other niceties right
794	PUSHs (*av_fetch (av, 0, 1));	1116	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1117	PUSHs (sv_cbor);
796		1118
…		…
804	SPAGAIN;	1126	SPAGAIN;
805		1127
806	if (SvTRUE (ERRSV))	1128	if (SvTRUE (ERRSV))
807	{	1129	{
808	FREETMPS; LEAVE;	1130	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1131	ERR_ERRSV;
810	}	1132	}
811		1133
812	SvREFCNT_dec (sv);	1134	SvREFCNT_dec (sv);
813	sv = SvREFCNT_inc (POPs);	1135	sv = SvREFCNT_inc (POPs);
814		1136
815	PUTBACK;	1137	PUTBACK;
816		1138
817	FREETMPS; LEAVE;	1139	FREETMPS; LEAVE;
818
819	return sv;
820	}	1140	}
		1141	break;
821		1142
822	default:	1143	default:
		1144	filter:
823	{	1145	{
		1146	SV *tag_sv = newSVuv (tag);
		1147
824	sv = decode_sv (dec);	1148	sv = decode_sv (dec);
825		1149
		1150	dSP;
		1151	ENTER; SAVETMPS;
		1152	SAVESTACK_POS ();
		1153	PUSHMARK (SP);
		1154	EXTEND (SP, 2);
		1155	PUSHs (tag_sv);
		1156	PUSHs (sv);
		1157
		1158	PUTBACK;
		1159	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1160	SPAGAIN;
		1161
		1162	if (SvTRUE (ERRSV))
		1163	{
		1164	SvREFCNT_dec (tag_sv);
		1165	FREETMPS; LEAVE;
		1166	ERR_ERRSV;
		1167	}
		1168
		1169	if (count)
		1170	{
		1171	SvREFCNT_dec (tag_sv);
		1172	SvREFCNT_dec (sv);
		1173	sv = SvREFCNT_inc (POPs);
		1174	}
		1175	else
		1176	{
826	AV *av = newAV ();	1177	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1178	av_push (av, tag_sv);
828	av_push (av, sv);	1179	av_push (av, sv);
829		1180
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1182	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
		1190	}
		1191	break;
836	}	1192	}
		1193
		1194	return sv;
837		1195
838	fail:	1196	fail:
839	SvREFCNT_dec (sv);	1197	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1198	return &PL_sv_undef;
841	}	1199	}
…		…
843	static SV *	1201	static SV *
844	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
845	{	1203	{
846	WANT (1);	1204	WANT (1);
847		1205
848	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1207	{
850	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1215
858	case 4: // array	1216	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)	1217	switch (*dec->cur++ & MINOR_MASK)
866	{	1218	{
867	case 20:	1219	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1220	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1221	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1222	#endif
871	return newSVsv (types_false);	1223	return newSVsv (types_false);
872	case 21:	1224	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1225	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1226	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1227	#endif
876	return newSVsv (types_true);	1228	return newSVsv (types_true);
877	case 22:	1229	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
879	case 23:	1231	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1232	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1233	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1234	#endif
883	return newSVsv (types_error);	1235	return newSVsv (types_error);
884		1236
885	case 25:	1237	case MISC_FLOAT16:
886	{	1238	{
887	WANT (2);	1239	WANT (2);
888		1240
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1242	dec->cur += 2;
891		1243
892	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
893	}	1245	}
894		1246
895	case 26:	1247	case MISC_FLOAT32:
896	{	1248	{
897	uint32_t fp;	1249	uint32_t fp;
898	WANT (4);	1250	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1252	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
904		1256
905	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
906	}	1258	}
907		1259
908	case 27:	1260	case MISC_FLOAT64:
909	{	1261	{
910	uint64_t fp;	1262	uint64_t fp;
911	WANT (8);	1263	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1265	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
917		1269
918	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
919	}	1271	}
920		1272
921	// 0..19 unassigned	1273	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1274	// 24 reserved + unassigned simple (reserved values are not encodable)
		1275	// 28-30 unassigned misc
		1276	// 31 break code
923	default:	1277	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1279	}
926		1280
927	break;	1281	break;
928	}	1282	}
929		1283
…		…
932	}	1286	}
933		1287
934	static SV *	1288	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1290	{
937	dec_t dec = { };	1291	dec_t dec = { 0 };
938	SV *sv;	1292	SV *sv;
939	STRLEN len;	1293	STRLEN len;
940	char *data = SvPVbyte (string, len);	1294	char *data = SvPVbyte (string, len);
941		1295
942	if (len > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
958		1312
959	if (dec.err)	1313	if (dec.err)
960	{	1314	{
		1315	if (dec.shareable)
		1316	{
		1317	// need to break cyclic links, which would all be in shareable
		1318	int i;
		1319	SV **svp;
		1320
		1321	for (i = av_len (dec.shareable) + 1; i--; )
		1322	if ((svp = av_fetch (dec.shareable, i, 0)))
		1323	sv_setsv (*svp, &PL_sv_undef);
		1324	}
		1325
961	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1331	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
963	}	1332	}
964		1333
965	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
966		1335
967	return sv;	1336	return sv;
968	}	1337	}
969		1338
		1339	/////////////////////////////////////////////////////////////////////////////
		1340	// incremental parser
		1341
		1342	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1343
		1344	// returns 0 for notyet, 1 for success or error
		1345	static int
		1346	incr_parse (CBOR *self, SV *cborstr)
		1347	{
		1348	STRLEN cur;
		1349	SvPV (cborstr, cur);
		1350
		1351	while (ecb_expect_true (self->incr_need <= cur))
		1352	{
		1353	// table of integer count bytes
		1354	static I8 incr_len[MINOR_MASK + 1] = {
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	0, 0, 0, 0, 0, 0, 0, 0,
		1358	1, 2, 4, 8,-1,-1,-1,-2
		1359	};
		1360
		1361	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1362	U8 m = *p & MINOR_MASK;
		1363	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1364	I8 ilen = incr_len[m];
		1365
		1366	self->incr_need = self->incr_pos + 1;
		1367
		1368	if (ecb_expect_false (ilen < 0))
		1369	{
		1370	if (m != MINOR_INDEF)
		1371	return 1; // error
		1372
		1373	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1374	{
		1375	if (count >= 0)
		1376	return 1; // error
		1377
		1378	count = 1;
		1379	}
		1380	else
		1381	{
		1382	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1383	count = -1;
		1384	}
		1385	}
		1386	else
		1387	{
		1388	self->incr_need += ilen;
		1389	if (ecb_expect_false (self->incr_need > cur))
		1390	return 0;
		1391
		1392	int major = *p >> MAJOR_SHIFT;
		1393
		1394	switch (major)
		1395	{
		1396	case MAJOR_TAG >> MAJOR_SHIFT:
		1397	++count; // tags merely prefix another value
		1398	break;
		1399
		1400	case MAJOR_BYTES >> MAJOR_SHIFT:
		1401	case MAJOR_TEXT >> MAJOR_SHIFT:
		1402	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1403	case MAJOR_MAP >> MAJOR_SHIFT:
		1404	{
		1405	UV len;
		1406
		1407	if (ecb_expect_false (ilen))
		1408	{
		1409	len = 0;
		1410
		1411	do {
		1412	len = (len << 8) | *++p;
		1413	} while (--ilen);
		1414	}
		1415	else
		1416	len = m;
		1417
		1418	switch (major)
		1419	{
		1420	case MAJOR_BYTES >> MAJOR_SHIFT:
		1421	case MAJOR_TEXT >> MAJOR_SHIFT:
		1422	self->incr_need += len;
		1423	if (ecb_expect_false (self->incr_need > cur))
		1424	return 0;
		1425
		1426	break;
		1427
		1428	case MAJOR_MAP >> MAJOR_SHIFT:
		1429	len <<= 1;
		1430	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1431	if (len)
		1432	{
		1433	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1434	count = len + 1;
		1435	}
		1436	break;
		1437	}
		1438	}
		1439	}
		1440	}
		1441
		1442	self->incr_pos = self->incr_need;
		1443
		1444	if (count > 0)
		1445	{
		1446	while (!--count)
		1447	{
		1448	if (!AvFILLp (self->incr_count))
		1449	return 1; // done
		1450
		1451	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1452	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1453	}
		1454
		1455	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1456	}
		1457	}
		1458
		1459	return 0;
		1460	}
		1461
		1462
970	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1464	// XS interface functions
972		1465
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1467
…		…
982		1475
983	types_true = get_bool ("Types::Serialiser::true" );	1476	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1477	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1478	types_error = get_bool ("Types::Serialiser::error");
986		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
987	sv_cbor = newSVpv ("CBOR", 0);	1482	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1486	}
990		1487
991	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
992		1489
993	void CLONE (...)	1490	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1510	ALIAS:
1014	shrink = F_SHRINK	1511	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1512	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1513	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1514	allow_cycles = F_ALLOW_CYCLES
		1515	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1516	pack_strings = F_PACK_STRINGS
		1517	text_keys = F_TEXT_KEYS
		1518	text_strings = F_TEXT_STRINGS
		1519	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1520	PPCODE:
1020	{	1521	{
1021	if (enable)	1522	if (enable)
1022	self->flags |= ix;	1523	self->flags |= ix;
1023	else	1524	else
…		…
1029	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
1030	ALIAS:	1531	ALIAS:
1031	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1533	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1534	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1535	get_allow_cycles = F_ALLOW_CYCLES
		1536	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	1537	get_pack_strings = F_PACK_STRINGS
		1538	get_text_keys = F_TEXT_KEYS
		1539	get_text_strings = F_TEXT_STRINGS
		1540	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1541	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
1038		1543
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1545	PPCODE:
…		…
1053	XPUSHs (ST (0));	1558	XPUSHs (ST (0));
1054		1559
1055	int get_max_size (CBOR *self)	1560	int get_max_size (CBOR *self)
1056	CODE:	1561	CODE:
1057	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	void filter (CBOR *self, SV *filter = 0)
		1567	PPCODE:
		1568	SvREFCNT_dec (self->filter);
		1569	self->filter = filter ? newSVsv (filter) : filter;
		1570	XPUSHs (ST (0));
		1571
		1572	SV *get_filter (CBOR *self)
		1573	CODE:
		1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1575	OUTPUT:
1059	RETVAL	1576	RETVAL
1060		1577
1061	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1579	PPCODE:
…		…
1077	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
1078	PUSHs (sv);	1595	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1597	}
1081		1598
		1599	void incr_parse (CBOR *self, SV *cborstr)
		1600	ALIAS:
		1601	incr_parse_multiple = 1
		1602	PPCODE:
		1603	{
		1604	if (SvUTF8 (cborstr))
		1605	sv_utf8_downgrade (cborstr, 0);
		1606
		1607	if (!self->incr_count)
		1608	{
		1609	self->incr_count = newAV ();
		1610	self->incr_pos = 0;
		1611	self->incr_need = 1;
		1612
		1613	av_push (self->incr_count, newSViv (1));
		1614	}
		1615
		1616	do
		1617	{
		1618	if (!incr_parse (self, cborstr))
		1619	{
		1620	if (self->incr_need > self->max_size && self->max_size)
		1621	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1622	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1623
		1624	break;
		1625	}
		1626
		1627	SV *sv;
		1628	char *offset;
		1629
		1630	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1631	XPUSHs (sv);
		1632
		1633	sv_chop (cborstr, offset);
		1634
		1635	av_clear (self->incr_count);
		1636	av_push (self->incr_count, newSViv (1));
		1637
		1638	self->incr_pos = 0;
		1639	self->incr_need = self->incr_pos + 1;
		1640	}
		1641	while (ix);
		1642	}
		1643
		1644	void incr_reset (CBOR *self)
		1645	CODE:
		1646	{
		1647	SvREFCNT_dec (self->incr_count);
		1648	self->incr_count = 0;
		1649	}
		1650
		1651	void DESTROY (CBOR *self)
		1652	PPCODE:
		1653	cbor_free (self);
		1654
1082	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
1083		1656
1084	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1661	PPCODE:
1086	{	1662	{
1087	CBOR cbor;	1663	CBOR cbor;
1088	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1667	XPUSHs (scalar);
1091	}	1668	}
1092		1669
1093	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines