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Comparing cvsroot/CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.44 by root, Tue Feb 18 22:12:12 2014 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
16		106
17	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
18		108
19	#define SB do {	109	#define SB do {
20	#define SE } while (0)	110	#define SE } while (0)
…		…
31	#else	121	#else
32	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
34	#endif	124	#endif
35		125
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		128
39	typedef struct {	129	typedef struct {
40	U32 flags;	130	U32 flags;
41	U32 max_depth;	131	U32 max_depth;
42	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
43		134
44	SV *cb_object;	135	// for the incremental parser
45	HV *cb_sk_object;	136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	139	} CBOR;
47		140
48	ecb_inline void	141	ecb_inline void
49	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
50	{	143	{
51	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	145	cbor->max_depth = 512;
		146	}
		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
53	}	153	}
54		154
55	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	156	// utility functions
57		157
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	180	#endif
81	}	181	}
82	}	182	}
83		183
84	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
85	// fp hell	185	ecb_inline int
86		186	minimum_string_length (UV idx)
87	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
88		198
89	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
90	// encoder	200	// encoder
91		201
92	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
97	SV *sv; // result scalar	207	SV *sv; // result scalar
98	CBOR cbor;	208	CBOR cbor;
99	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
100	} enc_t;	214	} enc_t;
101		215
102	ecb_inline void	216	ecb_inline void
103	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
104	{	218	{
…		…
121	static void	235	static void
122	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
123	{	237	{
124	need (enc, 9);	238	need (enc, 9);
125		239
126	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
128	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
129	{	243	{
130	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	245	*enc->cur++ = len;
132	}	246	}
133	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
134	{	248	{
135	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	251	*enc->cur++ = len;
138	}	252	}
139	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
140	{	254	{
141	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	259	*enc->cur++ = len;
146	}	260	}
147	else	261	else
148	{	262	{
149	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	271	*enc->cur++ = len;
158	}	272	}
159	}	273	}
160		274
161	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	ecb_inline void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	283	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	285	need (enc, len);
166	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
167	enc->cur += len;	287	enc->cur += len;
168	}	288	}
169		289
		290	static void
		291	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
170	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
171		316
172	static void	317	static void
173	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
174	{	319	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
179		324
180	++enc->depth;	325	++enc->depth;
181		326
182	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		328
184	for (i = 0; i <= len; ++i)	329	for (i = 0; i <= len; ++i)
185	{	330	{
186	SV **svp = av_fetch (av, i, 0);	331	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	332	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
202		347
203	int pairs = hv_iterinit (hv);	348	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	349	int mg = SvMAGICAL (hv);
205		350
206	if (mg)	351	if (mg)
207	encode_ch (enc, 0xa0 | 31);	352	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	353	else
209	encode_uint (enc, 0xa0, pairs);	354	encode_uint (enc, MAJOR_MAP, pairs);
210		355
211	while ((he = hv_iternext (hv)))	356	while ((he = hv_iternext (hv)))
212	{	357	{
213	if (HeKLEN (he) == HEf_SVKEY)	358	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	359	encode_sv (enc, HeSVKEY (he));
215	else	360	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	361	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		362
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	363	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	364	}
220		365
221	if (mg)	366	if (mg)
222	encode_ch (enc, 0xe0 | 31);	367	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		368
224	--enc->depth;	369	--enc->depth;
225	}	370	}
226		371
227	// encode objects, arrays and special \0=false and \1=true values.	372	// encode objects, arrays and special \0=false and \1=true values.
228	static void	373	static void
229	encode_rv (enc_t *enc, SV *sv)	374	encode_rv (enc_t *enc, SV *sv)
230	{	375	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	376	SvGETMAGIC (sv);
		377
234	svt = SvTYPE (sv);	378	svtype svt = SvTYPE (sv);
235		379
236	if (ecb_expect_false (SvOBJECT (sv)))	380	if (ecb_expect_false (SvOBJECT (sv)))
237	{	381	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	382	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	383	? types_boolean_stash
		384	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		385	HV *error_stash = !CBOR_SLOW || types_error_stash
		386	? types_error_stash
		387	: gv_stashpv ("Types::Serialiser::Error", 1);
		388	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		389	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	390	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		391
242	if (SvSTASH (sv) == stash)	392	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	393
		394	if (stash == boolean_stash)
		395	{
		396	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		397	return;
		398	}
		399	else if (stash == error_stash)
		400	{
		401	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		402	return;
		403	}
		404	else if (stash == tagged_stash)
		405	{
		406	if (svt != SVt_PVAV)
		407	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		408
		409	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		410	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		411
		412	return;
		413	}
		414	}
		415
		416	if (ecb_expect_false (SvREFCNT (sv) > 1)
		417	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		418	{
		419	if (!enc->shareable)
		420	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		421
		422	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		423
		424	if (SvOK (*svp))
		425	{
		426	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		427	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		428	return;
		429	}
244	else	430	else
245	{	431	{
246	#if 0 //TODO	432	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	433	++enc->shareable_idx;
		434	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		435	}
		436	}
		437
		438	if (ecb_expect_false (SvOBJECT (sv)))
		439	{
		440	HV *stash = SvSTASH (sv);
		441	GV *method;
		442
		443	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	444	{
		445	dSP;
		446
		447	ENTER; SAVETMPS; PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	448	// we re-bless the reference to get overload and other niceties right
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	449	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		450
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	451	PUTBACK;
		452	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	453	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	454	SPAGAIN;
263		455
264	// catch this surprisingly common error	456	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	457	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	458	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		459
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	460	encode_sv (enc, POPs);
272		461
		462	PUTBACK;
		463
273	FREETMPS; LEAVE;	464	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	465	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	466	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	467	{
		468	dSP;
		469
		470	ENTER; SAVETMPS; PUSHMARK (SP);
		471	EXTEND (SP, 2);
		472	// we re-bless the reference to get overload and other niceties right
		473	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		474	PUSHs (sv_cbor);
		475
		476	PUTBACK;
		477	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		478	SPAGAIN;
		479
		480	// catch this surprisingly common error
		481	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		482	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		483
		484	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		485	encode_uint (enc, MAJOR_ARRAY, count + 1);
		486	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		487
		488	while (count)
		489	encode_sv (enc, SP[1 - count--]);
		490
		491	PUTBACK;
		492
		493	FREETMPS; LEAVE;
		494	}
283	else	495	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	496	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	497	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	498	}
289	else if (svt == SVt_PVHV)	499	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	500	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	501	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	502	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	503	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	504	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	505	encode_tag (enc, CBOR_TAG_INDIRECTION);
		506	encode_sv (enc, sv);
		507	}
313	}	508	}
314		509
315	static void	510	static void
316	encode_nv (enc_t *enc, SV *sv)	511	encode_nv (enc_t *enc, SV *sv)
317	{	512	{
318	double nv = SvNVX (sv);	513	double nv = SvNVX (sv);
319		514
320	need (enc, 9);	515	need (enc, 9);
321		516
322	if (ecb_expect_false (nv == (U32)nv))	517	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	518	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	519	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	520	else if (ecb_expect_false (nv == (float)nv))
326	{	521	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	522	uint32_t fp = ecb_float_to_binary32 (nv);
328		523
329	*enc->cur++ = 0xe0 | 26;	524	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		525
331	if (!ecb_big_endian ())	526	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	527	fp = ecb_bswap32 (fp);
333		528
334	memcpy (enc->cur, &fp, 4);	529	memcpy (enc->cur, &fp, 4);
…		…
336	}	531	}
337	else	532	else
338	{	533	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	534	uint64_t fp = ecb_double_to_binary64 (nv);
340		535
341	*enc->cur++ = 0xe0 | 27;	536	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		537
343	if (!ecb_big_endian ())	538	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	539	fp = ecb_bswap64 (fp);
345		540
346	memcpy (enc->cur, &fp, 8);	541	memcpy (enc->cur, &fp, 8);
…		…
355		550
356	if (SvPOKp (sv))	551	if (SvPOKp (sv))
357	{	552	{
358	STRLEN len;	553	STRLEN len;
359	char *str = SvPV (sv, len);	554	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	555	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	556	}
362	else if (SvNOKp (sv))	557	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	558	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	559	else if (SvIOKp (sv))
365	{	560	{
366	if (SvIsUV (sv))	561	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	562	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	563	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	564	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	565	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	566	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	567	}
373	else if (SvROK (sv))	568	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	569	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	570	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	571	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	572	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	573	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	574	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	575	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	576	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	577	}
383		578
384	static SV *	579	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	580	encode_cbor (SV *scalar, CBOR *cbor)
386	{	581	{
387	enc_t enc;	582	enc_t enc = { };
388		583
389	enc.cbor = *cbor;	584	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	585	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	586	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	587	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		588
395	SvPOK_only (enc.sv);	589	SvPOK_only (enc.sv);
		590
		591	if (cbor->flags & F_PACK_STRINGS)
		592	{
		593	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		594	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		595	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		596	}
		597
396	encode_sv (&enc, scalar);	598	encode_sv (&enc, scalar);
397		599
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	600	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	601	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		602
…		…
414	U8 *end; // end of input string	616	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	617	const char *err; // parse error, if != 0
416	CBOR cbor;	618	CBOR cbor;
417	U32 depth; // recursion depth	619	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	620	U32 maxdepth; // recursion depth limit
		621	AV *shareable;
		622	AV *stringref;
		623	SV *decode_tagged;
419	} dec_t;	624	} dec_t;
420		625
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	626	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		627
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	628	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
426	#define DEC_DEC_DEPTH --dec->depth	631	#define DEC_DEC_DEPTH --dec->depth
427		632
428	static UV	633	static UV
429	decode_uint (dec_t *dec)	634	decode_uint (dec_t *dec)
430	{	635	{
431	switch (*dec->cur & 31)	636	U8 m = *dec->cur & MINOR_MASK;
432	{	637	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		638
438	case 24:	639	if (ecb_expect_true (m < LENGTH_EXT1))
		640	return m;
		641	else if (ecb_expect_true (m == LENGTH_EXT1))
		642	{
439	WANT (2);	643	WANT (1);
440	dec->cur += 2;	644	dec->cur += 1;
441	return dec->cur[-1];	645	return dec->cur[-1];
442		646	}
443	case 25:	647	else if (ecb_expect_true (m == LENGTH_EXT2))
		648	{
444	WANT (3);	649	WANT (2);
445	dec->cur += 3;	650	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	651	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	652	| ((UV)dec->cur[-1]);
448		653	}
449	case 26:	654	else if (ecb_expect_true (m == LENGTH_EXT4))
		655	{
450	WANT (5);	656	WANT (4);
451	dec->cur += 5;	657	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	658	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	659	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	660	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	661	| ((UV)dec->cur[-1]);
456		662	}
457	case 27:	663	else if (ecb_expect_true (m == LENGTH_EXT8))
		664	{
458	WANT (9);	665	WANT (8);
459	dec->cur += 9;	666	dec->cur += 8;
		667
		668	return
		669	#if UVSIZE < 8
		670	0
		671	#else
460	return (((UV)dec->cur[-8]) << 56)	672	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	673	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	674	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	675	| (((UV)dec->cur[-5]) << 32)
		676	#endif
464	| (((UV)dec->cur[-4]) << 24)	677	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	678	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	679	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	680	| ((UV)dec->cur[-1]);
468		681	}
469	default:	682	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	683	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		684
473	fail:	685	fail:
474	return 0;	686	return 0;
475	}	687	}
476		688
…		…
481	{	693	{
482	AV *av = newAV ();	694	AV *av = newAV ();
483		695
484	DEC_INC_DEPTH;	696	DEC_INC_DEPTH;
485		697
486	if ((*dec->cur & 31) == 31)	698	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	699	{
488	++dec->cur;	700	++dec->cur;
489		701
490	for (;;)	702	for (;;)
491	{	703	{
492	WANT (1);	704	WANT (1);
493		705
494	if (*dec->cur == (0xe0 | 31))	706	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	707	{
496	++dec->cur;	708	++dec->cur;
497	break;	709	break;
498	}	710	}
499		711
…		…
502	}	714	}
503	else	715	else
504	{	716	{
505	int i, len = decode_uint (dec);	717	int i, len = decode_uint (dec);
506		718
		719	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	720	av_fill (av, len - 1);
508		721
509	for (i = 0; i < len; ++i)	722	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	723	AvARRAY (av)[i] = decode_sv (dec);
511	}	724	}
…		…
517	SvREFCNT_dec (av);	730	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	731	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	732	return &PL_sv_undef;
520	}	733	}
521		734
		735	static void
		736	decode_he (dec_t *dec, HV *hv)
		737	{
		738	// for speed reasons, we specialcase single-string
		739	// byte or utf-8 strings as keys, but only when !stringref
		740
		741	if (ecb_expect_true (!dec->stringref))
		742	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		743	{
		744	I32 len = decode_uint (dec);
		745	char *key = (char *)dec->cur;
		746
		747	dec->cur += len;
		748
		749	hv_store (hv, key, len, decode_sv (dec), 0);
		750
		751	return;
		752	}
		753	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		754	{
		755	I32 len = decode_uint (dec);
		756	char *key = (char *)dec->cur;
		757
		758	dec->cur += len;
		759
		760	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		761	if (!is_utf8_string (key, len))
		762	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		763
		764	hv_store (hv, key, -len, decode_sv (dec), 0);
		765
		766	return;
		767	}
		768
		769	SV *k = decode_sv (dec);
		770	SV *v = decode_sv (dec);
		771
		772	hv_store_ent (hv, k, v, 0);
		773	SvREFCNT_dec (k);
		774
		775	fail:
		776	;
		777	}
		778
522	static SV *	779	static SV *
523	decode_hv (dec_t *dec)	780	decode_hv (dec_t *dec)
524	{	781	{
525	HV *hv = newHV ();	782	HV *hv = newHV ();
526		783
527	DEC_INC_DEPTH;	784	DEC_INC_DEPTH;
528		785
529	if ((*dec->cur & 31) == 31)	786	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	787	{
531	++dec->cur;	788	++dec->cur;
532		789
533	for (;;)	790	for (;;)
534	{	791	{
535	WANT (1);	792	WANT (1);
536		793
537	if (*dec->cur == (0xe0 | 31))	794	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	795	{
539	++dec->cur;	796	++dec->cur;
540	break;	797	break;
541	}	798	}
542		799
543	SV *k = decode_sv (dec);	800	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	801	}
548	}	802	}
549	else	803	else
550	{	804	{
551	int len = decode_uint (dec);	805	int pairs = decode_uint (dec);
552		806
553	while (len--)	807	while (pairs--)
554	{	808	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	809	}
561		810
562	DEC_DEC_DEPTH;	811	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	812	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		813
720	fail:	814	fail:
721	SvREFCNT_dec (hv);	815	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	817	return &PL_sv_undef;
724	}	818	}
725		819
726	static SV *	820	static SV *
727	decode_str (dec_t *dec, int utf8)	821	decode_str (dec_t *dec, int utf8)
728	{	822	{
729	SV *sv;	823	SV *sv = 0;
730		824
731	if ((*dec->cur & 31) == 31)	825	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	826	{
		827	// indefinite length strings
733	++dec->cur;	828	++dec->cur;
734		829
		830	U8 major = *dec->cur & MAJOR_MISC;
		831
735	sv = newSVpvn ("", 0);	832	sv = newSVpvn ("", 0);
736		833
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	834	for (;;)
739	{	835	{
740	WANT (1);	836	WANT (1);
741		837
742	if (*dec->cur == (0xe0 | 31))	838	if ((*dec->cur - major) > LENGTH_EXT8)
		839	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	840	{
744	++dec->cur;	841	++dec->cur;
745	break;	842	break;
746	}	843	}
		844	else
		845	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		846
748	SV *sv2 = decode_sv (dec);	847	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	848
		849	WANT (len);
		850	sv_catpvn (sv, dec->cur, len);
		851	dec->cur += len;
750	}	852	}
751	}	853	}
752	else	854	else
753	{	855	{
754	STRLEN len = decode_uint (dec);	856	STRLEN len = decode_uint (dec);
755		857
756	WANT (len);	858	WANT (len);
757	sv = newSVpvn (dec->cur, len);	859	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	860	dec->cur += len;
		861
		862	if (ecb_expect_false (dec->stringref)
		863	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		864	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	865	}
760		866
761	if (utf8)	867	if (utf8)
		868	{
		869	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		870	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		871	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		872
762	SvUTF8_on (sv);	873	SvUTF8_on (sv);
		874	}
763		875
764	return sv;	876	return sv;
765		877
766	fail:	878	fail:
		879	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	880	return &PL_sv_undef;
768	}	881	}
769		882
770	static SV *	883	static SV *
771	decode_tagged (dec_t *dec)	884	decode_tagged (dec_t *dec)
772	{	885	{
		886	SV *sv = 0;
773	UV tag = decode_uint (dec);	887	UV tag = decode_uint (dec);
		888
		889	WANT (1);
		890
		891	switch (tag)
		892	{
		893	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	894	sv = decode_sv (dec);
		895	break;
775		896
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	897	case CBOR_TAG_INDIRECTION:
		898	sv = newRV_noinc (decode_sv (dec));
		899	break;
		900
		901	case CBOR_TAG_STRINGREF_NAMESPACE:
		902	{
		903	ENTER; SAVETMPS;
		904
		905	SAVESPTR (dec->stringref);
		906	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		907
		908	sv = decode_sv (dec);
		909
		910	FREETMPS; LEAVE;
		911	}
		912	break;
		913
		914	case CBOR_TAG_STRINGREF:
		915	{
		916	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		917	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		918
		919	UV idx = decode_uint (dec);
		920
		921	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		922	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		923
		924	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		925	}
		926	break;
		927
		928	case CBOR_TAG_VALUE_SHAREABLE:
		929	{
		930	if (ecb_expect_false (!dec->shareable))
		931	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		932
		933	if (dec->cbor.flags & F_ALLOW_CYCLES)
		934	{
		935	sv = newSV (0);
		936	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		937
		938	SV *osv = decode_sv (dec);
		939	sv_setsv (sv, osv);
		940	SvREFCNT_dec_NN (osv);
		941	}
		942	else
		943	{
		944	av_push (dec->shareable, &PL_sv_undef);
		945	int idx = AvFILLp (dec->shareable);
		946	sv = decode_sv (dec);
		947	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		948	}
		949	}
		950	break;
		951
		952	case CBOR_TAG_VALUE_SHAREDREF:
		953	{
		954	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		955	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		956
		957	UV idx = decode_uint (dec);
		958
		959	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		960	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		961
		962	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		963
		964	if (sv == &PL_sv_undef)
		965	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		966	}
		967	break;
		968
		969	case CBOR_TAG_PERL_OBJECT:
		970	{
		971	sv = decode_sv (dec);
		972
		973	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		974	ERR ("corrupted CBOR data (non-array perl object)");
		975
		976	AV *av = (AV *)SvRV (sv);
		977	int len = av_len (av) + 1;
		978	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		979
		980	if (!stash)
		981	ERR ("cannot decode perl-object (package does not exist)");
		982
		983	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		984
		985	if (!method)
		986	ERR ("cannot decode perl-object (package does not have a THAW method)");
		987
		988	dSP;
		989
		990	ENTER; SAVETMPS; PUSHMARK (SP);
		991	EXTEND (SP, len + 1);
		992	// we re-bless the reference to get overload and other niceties right
		993	PUSHs (*av_fetch (av, 0, 1));
		994	PUSHs (sv_cbor);
		995
		996	int i;
		997
		998	for (i = 1; i < len; ++i)
		999	PUSHs (*av_fetch (av, i, 1));
		1000
		1001	PUTBACK;
		1002	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1003	SPAGAIN;
		1004
		1005	if (SvTRUE (ERRSV))
		1006	{
		1007	FREETMPS; LEAVE;
		1008	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1009	}
		1010
		1011	SvREFCNT_dec (sv);
		1012	sv = SvREFCNT_inc (POPs);
		1013
		1014	PUTBACK;
		1015
		1016	FREETMPS; LEAVE;
		1017	}
		1018	break;
		1019
		1020	default:
		1021	{
		1022	sv = decode_sv (dec);
		1023
		1024	dSP;
		1025	ENTER; SAVETMPS; PUSHMARK (SP);
		1026	EXTEND (SP, 2);
		1027	PUSHs (newSVuv (tag));
		1028	PUSHs (sv);
		1029
		1030	PUTBACK;
		1031	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1032	SPAGAIN;
		1033
		1034	if (SvTRUE (ERRSV))
		1035	{
		1036	FREETMPS; LEAVE;
		1037	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1038	}
		1039
		1040	if (count)
		1041	{
		1042	SvREFCNT_dec (sv);
		1043	sv = SvREFCNT_inc (POPs);
		1044	}
		1045	else
		1046	{
		1047	AV *av = newAV ();
		1048	av_push (av, newSVuv (tag));
		1049	av_push (av, sv);
		1050
		1051	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1052	? cbor_tagged_stash
		1053	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1054	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1055	}
		1056
		1057	PUTBACK;
		1058
		1059	FREETMPS; LEAVE;
		1060	}
		1061	break;
		1062	}
		1063
777	return sv;	1064	return sv;
778		1065
779	AV *av = newAV ();	1066	fail:
780	av_push (av, newSVuv (tag));	1067	SvREFCNT_dec (sv);
781	av_push (av, sv);	1068	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1069	}
784		1070
785	static SV *	1071	static SV *
786	decode_sv (dec_t *dec)	1072	decode_sv (dec_t *dec)
787	{	1073	{
788	WANT (1);	1074	WANT (1);
789		1075
790	switch (*dec->cur >> 5)	1076	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1077	{
792	case 0: // unsigned int	1078	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1079	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1080	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1081	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1082	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1083	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1084	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1085
800	return decode_str (dec, 1);	1086	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1087	switch (*dec->cur++ & MINOR_MASK)
809	{	1088	{
810	case 20:	1089	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1090	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1091	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1092	#endif
814	return newSVsv (cbor_false);	1093	return newSVsv (types_false);
815	case 21:	1094	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1095	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1096	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1097	#endif
819	return newSVsv (cbor_true);	1098	return newSVsv (types_true);
820	case 22:	1099	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1100	return newSVsv (&PL_sv_undef);
		1101	case SIMPLE_UNDEF:
		1102	#if CBOR_SLOW
		1103	types_error = get_bool ("Types::Serialiser::error");
		1104	#endif
		1105	return newSVsv (types_error);
822		1106
823	case 25:	1107	case MISC_FLOAT16:
824	{	1108	{
825	WANT (2);	1109	WANT (2);
826		1110
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1111	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1112	dec->cur += 2;
829		1113
830	return newSVnv (ecb_binary16_to_float (fp));	1114	return newSVnv (ecb_binary16_to_float (fp));
831	}	1115	}
832		1116
833	case 26:	1117	case MISC_FLOAT32:
834	{	1118	{
835	uint32_t fp;	1119	uint32_t fp;
836	WANT (4);	1120	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1121	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1122	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1125	fp = ecb_bswap32 (fp);
842		1126
843	return newSVnv (ecb_binary32_to_float (fp));	1127	return newSVnv (ecb_binary32_to_float (fp));
844	}	1128	}
845		1129
846	case 27:	1130	case MISC_FLOAT64:
847	{	1131	{
848	uint64_t fp;	1132	uint64_t fp;
849	WANT (8);	1133	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1134	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1135	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1138	fp = ecb_bswap64 (fp);
855		1139
856	return newSVnv (ecb_binary64_to_double (fp));	1140	return newSVnv (ecb_binary64_to_double (fp));
857	}	1141	}
858		1142
859	// 0..19 unassigned	1143	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1144	// 24 reserved + unassigned simple (reserved values are not encodable)
		1145	// 28-30 unassigned misc
		1146	// 31 break code
861	default:	1147	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1148	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1149	}
864		1150
865	break;	1151	break;
866	}	1152	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1153
924	fail:	1154	fail:
925	return &PL_sv_undef;	1155	return &PL_sv_undef;
926	}	1156	}
927		1157
928	static SV *	1158	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1159	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1160	{
931	dec_t dec;	1161	dec_t dec = { };
932	SV *sv;	1162	SV *sv;
		1163	STRLEN len;
		1164	char *data = SvPVbyte (string, len);
933		1165
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1166	if (len > cbor->max_size && cbor->max_size)
963	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1167	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1168	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1169
969	dec.cbor = *cbor;	1170	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1171	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1172	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1173
978	sv = decode_sv (&dec);	1174	sv = decode_sv (&dec);
979		1175
980	if (offset_return)	1176	if (offset_return)
981	*offset_return = dec.cur;	1177	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1180	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1181	dec.err = "garbage after CBOR object";
986		1182
987	if (dec.err)	1183	if (dec.err)
988	{	1184	{
		1185	if (dec.shareable)
		1186	{
		1187	// need to break cyclic links, which whould all be in shareable
		1188	int i;
		1189	SV **svp;
		1190
		1191	for (i = av_len (dec.shareable) + 1; i--; )
		1192	if ((svp = av_fetch (dec.shareable, i, 0)))
		1193	sv_setsv (*svp, &PL_sv_undef);
		1194	}
		1195
989	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1197	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1198	}
992		1199
993	sv = sv_2mortal (sv);	1200	sv = sv_2mortal (sv);
994		1201
995	return sv;	1202	return sv;
996	}	1203	}
997		1204
		1205	/////////////////////////////////////////////////////////////////////////////
		1206	// incremental parser
		1207
		1208	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1209
		1210	// returns 0 for notyet, 1 for success or error
		1211	static int
		1212	incr_parse (CBOR *self, SV *cborstr)
		1213	{
		1214	STRLEN cur;
		1215	SvPV (cborstr, cur);
		1216
		1217	while (ecb_expect_true (self->incr_need <= cur))
		1218	{
		1219	// table of integer count bytes
		1220	static I8 incr_len[MINOR_MASK + 1] = {
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	0, 0, 0, 0, 0, 0, 0, 0,
		1224	1, 2, 4, 8,-1,-1,-1,-2
		1225	};
		1226
		1227	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1228	U8 m = *p & MINOR_MASK;
		1229	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1230	I8 ilen = incr_len[m];
		1231
		1232	self->incr_need = self->incr_pos + 1;
		1233
		1234	if (ecb_expect_false (ilen < 0))
		1235	{
		1236	if (m != MINOR_INDEF)
		1237	return 1; // error
		1238
		1239	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1240	{
		1241	if (count >= 0)
		1242	return 1; // error
		1243
		1244	count = 1;
		1245	}
		1246	else
		1247	{
		1248	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1249	count = -1;
		1250	}
		1251	}
		1252	else
		1253	{
		1254	self->incr_need += ilen;
		1255	if (ecb_expect_false (self->incr_need > cur))
		1256	return 0;
		1257
		1258	int major = *p >> MAJOR_SHIFT;
		1259
		1260	switch (major)
		1261	{
		1262	case MAJOR_BYTES >> MAJOR_SHIFT:
		1263	case MAJOR_TEXT >> MAJOR_SHIFT:
		1264	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1265	case MAJOR_MAP >> MAJOR_SHIFT:
		1266	{
		1267	UV len;
		1268
		1269	if (ecb_expect_false (ilen))
		1270	{
		1271	len = 0;
		1272
		1273	do {
		1274	len = (len << 8) | *++p;
		1275	} while (--ilen);
		1276	}
		1277	else
		1278	len = m;
		1279
		1280	switch (major)
		1281	{
		1282	case MAJOR_BYTES >> MAJOR_SHIFT:
		1283	case MAJOR_TEXT >> MAJOR_SHIFT:
		1284	self->incr_need += len;
		1285	if (ecb_expect_false (self->incr_need > cur))
		1286	return 0;
		1287
		1288	break;
		1289
		1290	case MAJOR_MAP >> MAJOR_SHIFT:
		1291	len <<= 1;
		1292	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1293	if (len)
		1294	{
		1295	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1296	count = len + 1;
		1297	}
		1298	break;
		1299	}
		1300	}
		1301	}
		1302	}
		1303
		1304	self->incr_pos = self->incr_need;
		1305
		1306	if (count > 0)
		1307	{
		1308	while (!--count)
		1309	{
		1310	if (!AvFILLp (self->incr_count))
		1311	return 1; // done
		1312
		1313	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1314	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1315	}
		1316
		1317	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1318	}
		1319	}
		1320
		1321	return 0;
		1322	}
		1323
		1324
998	/////////////////////////////////////////////////////////////////////////////	1325	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1326	// XS interface functions
1000		1327
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1328	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1329
1003	BOOT:	1330	BOOT:
1004	{	1331	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1332	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1333	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1334
1008	cbor_true = get_bool ("CBOR::XS::true");	1335	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1336	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1337
		1338	types_true = get_bool ("Types::Serialiser::true" );
		1339	types_false = get_bool ("Types::Serialiser::false");
		1340	types_error = get_bool ("Types::Serialiser::error");
		1341
		1342	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1343
		1344	sv_cbor = newSVpv ("CBOR", 0);
		1345	SvREADONLY_on (sv_cbor);
1010	}	1346	}
1011		1347
1012	PROTOTYPES: DISABLE	1348	PROTOTYPES: DISABLE
1013		1349
1014	void CLONE (...)	1350	void CLONE (...)
1015	CODE:	1351	CODE:
1016	cbor_stash = 0;	1352	cbor_stash = 0;
		1353	cbor_tagged_stash = 0;
		1354	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1355	types_boolean_stash = 0;
1018		1356
1019	void new (char *klass)	1357	void new (char *klass)
1020	PPCODE:	1358	PPCODE:
1021	{	1359	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1360	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1368
1031	void shrink (CBOR *self, int enable = 1)	1369	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1370	ALIAS:
1033	shrink = F_SHRINK	1371	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1372	allow_unknown = F_ALLOW_UNKNOWN
		1373	allow_sharing = F_ALLOW_SHARING
		1374	allow_cycles = F_ALLOW_CYCLES
		1375	pack_strings = F_PACK_STRINGS
		1376	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1377	PPCODE:
1036	{	1378	{
1037	if (enable)	1379	if (enable)
1038	self->flags |= ix;	1380	self->flags |= ix;
1039	else	1381	else
…		…
1044		1386
1045	void get_shrink (CBOR *self)	1387	void get_shrink (CBOR *self)
1046	ALIAS:	1388	ALIAS:
1047	get_shrink = F_SHRINK	1389	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1390	get_allow_unknown = F_ALLOW_UNKNOWN
		1391	get_allow_sharing = F_ALLOW_SHARING
		1392	get_allow_cycles = F_ALLOW_CYCLES
		1393	get_pack_strings = F_PACK_STRINGS
		1394	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1395	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1396	XPUSHs (boolSV (self->flags & ix));
1051		1397
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1398	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1399	PPCODE:
…		…
1069	CODE:	1415	CODE:
1070	RETVAL = self->max_size;	1416	RETVAL = self->max_size;
1071	OUTPUT:	1417	OUTPUT:
1072	RETVAL	1418	RETVAL
1073		1419
1074	#if 0 //TODO	1420	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1421	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1422	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1423	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1424	XPUSHs (ST (0));
1083	}
1084		1425
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1426	SV *get_filter (CBOR *self)
1086	PPCODE:	1427	CODE:
1087	{	1428	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1429	OUTPUT:
1089	self->cb_sk_object = newHV ();	1430	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1431
1109	void encode (CBOR *self, SV *scalar)	1432	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1433	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1434	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1435	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1448	EXTEND (SP, 2);
1126	PUSHs (sv);	1449	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1450	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1451	}
1129		1452
		1453	void incr_parse (CBOR *self, SV *cborstr)
		1454	ALIAS:
		1455	incr_parse_multiple = 1
		1456	PPCODE:
		1457	{
		1458	if (SvUTF8 (cborstr))
		1459	sv_utf8_downgrade (cborstr, 0);
		1460
		1461	if (!self->incr_count)
		1462	{
		1463	self->incr_count = newAV ();
		1464	self->incr_pos = 0;
		1465	self->incr_need = 1;
		1466
		1467	av_push (self->incr_count, newSViv (1));
		1468	}
		1469
		1470	do
		1471	{
		1472	if (!incr_parse (self, cborstr))
		1473	{
		1474	if (self->incr_need > self->max_size && self->max_size)
		1475	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1476	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1477
		1478	break;
		1479	}
		1480
		1481	SV *sv;
		1482	char *offset;
		1483
		1484	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1485	XPUSHs (sv);
		1486
		1487	sv_chop (cborstr, offset);
		1488
		1489	av_clear (self->incr_count);
		1490	av_push (self->incr_count, newSViv (1));
		1491
		1492	self->incr_pos = 0;
		1493	self->incr_need = self->incr_pos + 1;
		1494	}
		1495	while (ix);
		1496	}
		1497
		1498	void incr_reset (CBOR *self)
		1499	CODE:
		1500	{
		1501	SvREFCNT_dec (self->incr_count);
		1502	self->incr_count = 0;
		1503	}
		1504
1130	void DESTROY (CBOR *self)	1505	void DESTROY (CBOR *self)
1131	CODE:	1506	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1507	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1508
1135	PROTOTYPES: ENABLE	1509	PROTOTYPES: ENABLE
1136		1510
1137	void encode_cbor (SV *scalar)	1511	void encode_cbor (SV *scalar)
		1512	ALIAS:
		1513	encode_cbor = 0
		1514	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1515	PPCODE:
1139	{	1516	{
1140	CBOR cbor;	1517	CBOR cbor;
1141	cbor_init (&cbor);	1518	cbor_init (&cbor);
		1519	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1520	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1521	XPUSHs (scalar);
1144	}	1522	}
1145		1523
1146	void decode_cbor (SV *cborstr)	1524	void decode_cbor (SV *cborstr)

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