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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 1.45 by root, Sun Dec 14 05:48:39 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
		329	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
185	{	331	{
186	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	encode_sv (enc, AvARRAY (av)[i]);
189		338
190	--enc->depth;	339	--enc->depth;
191	}	340	}
192		341
193	static void	342	static void
…		…
202		351
203	int pairs = hv_iterinit (hv);	352	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	353	int mg = SvMAGICAL (hv);
205		354
206	if (mg)	355	if (mg)
207	encode_ch (enc, 0xa0 | 31);	356	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	357	else
209	encode_uint (enc, 0xa0, pairs);	358	encode_uint (enc, MAJOR_MAP, pairs);
210		359
211	while ((he = hv_iternext (hv)))	360	while ((he = hv_iternext (hv)))
212	{	361	{
213	if (HeKLEN (he) == HEf_SVKEY)	362	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	363	encode_sv (enc, HeSVKEY (he));
215	else	364	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	365	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		366
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	367	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	368	}
220		369
221	if (mg)	370	if (mg)
222	encode_ch (enc, 0xe0 | 31);	371	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		372
224	--enc->depth;	373	--enc->depth;
225	}	374	}
226		375
227	// encode objects, arrays and special \0=false and \1=true values.	376	// encode objects, arrays and special \0=false and \1=true values.
228	static void	377	static void
229	encode_rv (enc_t *enc, SV *sv)	378	encode_rv (enc_t *enc, SV *sv)
230	{	379	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	380	SvGETMAGIC (sv);
		381
234	svt = SvTYPE (sv);	382	svtype svt = SvTYPE (sv);
235		383
236	if (ecb_expect_false (SvOBJECT (sv)))	384	if (ecb_expect_false (SvOBJECT (sv)))
237	{	385	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	386	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	387	? types_boolean_stash
		388	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		389	HV *error_stash = !CBOR_SLOW || types_error_stash
		390	? types_error_stash
		391	: gv_stashpv ("Types::Serialiser::Error", 1);
		392	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		393	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	394	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		395
242	if (SvSTASH (sv) == stash)	396	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	397
		398	if (stash == boolean_stash)
		399	{
		400	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		401	return;
		402	}
		403	else if (stash == error_stash)
		404	{
		405	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		406	return;
		407	}
		408	else if (stash == tagged_stash)
		409	{
		410	if (svt != SVt_PVAV)
		411	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		412
		413	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		414	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		415
		416	return;
		417	}
		418	}
		419
		420	if (ecb_expect_false (SvREFCNT (sv) > 1)
		421	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		422	{
		423	if (!enc->shareable)
		424	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		425
		426	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		427
		428	if (SvOK (*svp))
		429	{
		430	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		431	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		432	return;
		433	}
244	else	434	else
245	{	435	{
246	#if 0 //TODO	436	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	437	++enc->shareable_idx;
		438	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		439	}
		440	}
		441
		442	if (ecb_expect_false (SvOBJECT (sv)))
		443	{
		444	HV *stash = SvSTASH (sv);
		445	GV *method;
		446
		447	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	448	{
		449	dSP;
		450
		451	ENTER; SAVETMPS; PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	452	// 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)));	453	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		454
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	455	PUTBACK;
		456	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	457	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	458	SPAGAIN;
263		459
264	// catch this surprisingly common error	460	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	461	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)));	462	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		463
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	464	encode_sv (enc, POPs);
272		465
		466	PUTBACK;
		467
273	FREETMPS; LEAVE;	468	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	}	469	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	470	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	471	{
		472	dSP;
		473
		474	ENTER; SAVETMPS; PUSHMARK (SP);
		475	EXTEND (SP, 2);
		476	// we re-bless the reference to get overload and other niceties right
		477	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		478	PUSHs (sv_cbor);
		479
		480	PUTBACK;
		481	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		482	SPAGAIN;
		483
		484	// catch this surprisingly common error
		485	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		486	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		487
		488	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		489	encode_uint (enc, MAJOR_ARRAY, count + 1);
		490	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		491
		492	while (count)
		493	encode_sv (enc, SP[1 - count--]);
		494
		495	PUTBACK;
		496
		497	FREETMPS; LEAVE;
		498	}
283	else	499	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	500	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	501	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	502	}
289	else if (svt == SVt_PVHV)	503	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	504	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	505	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	506	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	507	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	508	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	509	encode_tag (enc, CBOR_TAG_INDIRECTION);
		510	encode_sv (enc, sv);
		511	}
313	}	512	}
314		513
315	static void	514	static void
316	encode_nv (enc_t *enc, SV *sv)	515	encode_nv (enc_t *enc, SV *sv)
317	{	516	{
318	double nv = SvNVX (sv);	517	double nv = SvNVX (sv);
319		518
320	need (enc, 9);	519	need (enc, 9);
321		520
322	if (ecb_expect_false (nv == (U32)nv))	521	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	522	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	523	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	524	else if (ecb_expect_false (nv == (float)nv))
326	{	525	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	526	uint32_t fp = ecb_float_to_binary32 (nv);
328		527
329	*enc->cur++ = 0xe0 | 26;	528	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		529
331	if (!ecb_big_endian ())	530	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	531	fp = ecb_bswap32 (fp);
333		532
334	memcpy (enc->cur, &fp, 4);	533	memcpy (enc->cur, &fp, 4);
…		…
336	}	535	}
337	else	536	else
338	{	537	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	538	uint64_t fp = ecb_double_to_binary64 (nv);
340		539
341	*enc->cur++ = 0xe0 | 27;	540	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		541
343	if (!ecb_big_endian ())	542	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	543	fp = ecb_bswap64 (fp);
345		544
346	memcpy (enc->cur, &fp, 8);	545	memcpy (enc->cur, &fp, 8);
…		…
355		554
356	if (SvPOKp (sv))	555	if (SvPOKp (sv))
357	{	556	{
358	STRLEN len;	557	STRLEN len;
359	char *str = SvPV (sv, len);	558	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	559	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	560	}
362	else if (SvNOKp (sv))	561	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	562	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	563	else if (SvIOKp (sv))
365	{	564	{
366	if (SvIsUV (sv))	565	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	566	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	567	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	568	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	569	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	570	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	571	}
373	else if (SvROK (sv))	572	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	573	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	574	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	575	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	576	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	577	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	578	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	579	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	580	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	581	}
383		582
384	static SV *	583	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	584	encode_cbor (SV *scalar, CBOR *cbor)
386	{	585	{
387	enc_t enc;	586	enc_t enc = { };
388		587
389	enc.cbor = *cbor;	588	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	589	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	590	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	591	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		592
395	SvPOK_only (enc.sv);	593	SvPOK_only (enc.sv);
		594
		595	if (cbor->flags & F_PACK_STRINGS)
		596	{
		597	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		598	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		599	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		600	}
		601
396	encode_sv (&enc, scalar);	602	encode_sv (&enc, scalar);
397		603
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	604	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	605	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		606
…		…
414	U8 *end; // end of input string	620	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	621	const char *err; // parse error, if != 0
416	CBOR cbor;	622	CBOR cbor;
417	U32 depth; // recursion depth	623	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	624	U32 maxdepth; // recursion depth limit
		625	AV *shareable;
		626	AV *stringref;
		627	SV *decode_tagged;
419	} dec_t;	628	} dec_t;
420		629
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	630	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		631
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	632	#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	635	#define DEC_DEC_DEPTH --dec->depth
427		636
428	static UV	637	static UV
429	decode_uint (dec_t *dec)	638	decode_uint (dec_t *dec)
430	{	639	{
431	switch (*dec->cur & 31)	640	U8 m = *dec->cur & MINOR_MASK;
432	{	641	++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		642
438	case 24:	643	if (ecb_expect_true (m < LENGTH_EXT1))
		644	return m;
		645	else if (ecb_expect_true (m == LENGTH_EXT1))
		646	{
439	WANT (2);	647	WANT (1);
440	dec->cur += 2;	648	dec->cur += 1;
441	return dec->cur[-1];	649	return dec->cur[-1];
442		650	}
443	case 25:	651	else if (ecb_expect_true (m == LENGTH_EXT2))
		652	{
444	WANT (3);	653	WANT (2);
445	dec->cur += 3;	654	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	655	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	656	| ((UV)dec->cur[-1]);
448		657	}
449	case 26:	658	else if (ecb_expect_true (m == LENGTH_EXT4))
		659	{
450	WANT (5);	660	WANT (4);
451	dec->cur += 5;	661	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	662	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	663	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	664	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	665	| ((UV)dec->cur[-1]);
456		666	}
457	case 27:	667	else if (ecb_expect_true (m == LENGTH_EXT8))
		668	{
458	WANT (9);	669	WANT (8);
459	dec->cur += 9;	670	dec->cur += 8;
		671
		672	return
		673	#if UVSIZE < 8
		674	0
		675	#else
460	return (((UV)dec->cur[-8]) << 56)	676	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	677	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	678	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	679	| (((UV)dec->cur[-5]) << 32)
		680	#endif
464	| (((UV)dec->cur[-4]) << 24)	681	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	682	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	683	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	684	| ((UV)dec->cur[-1]);
468		685	}
469	default:	686	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	687	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		688
473	fail:	689	fail:
474	return 0;	690	return 0;
475	}	691	}
476		692
…		…
481	{	697	{
482	AV *av = newAV ();	698	AV *av = newAV ();
483		699
484	DEC_INC_DEPTH;	700	DEC_INC_DEPTH;
485		701
486	if ((*dec->cur & 31) == 31)	702	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	703	{
488	++dec->cur;	704	++dec->cur;
489		705
490	for (;;)	706	for (;;)
491	{	707	{
492	WANT (1);	708	WANT (1);
493		709
494	if (*dec->cur == (0xe0 | 31))	710	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	711	{
496	++dec->cur;	712	++dec->cur;
497	break;	713	break;
498	}	714	}
499		715
…		…
502	}	718	}
503	else	719	else
504	{	720	{
505	int i, len = decode_uint (dec);	721	int i, len = decode_uint (dec);
506		722
		723	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);	724	av_fill (av, len - 1);
508		725
509	for (i = 0; i < len; ++i)	726	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	727	AvARRAY (av)[i] = decode_sv (dec);
511	}	728	}
…		…
517	SvREFCNT_dec (av);	734	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	735	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	736	return &PL_sv_undef;
520	}	737	}
521		738
		739	static void
		740	decode_he (dec_t *dec, HV *hv)
		741	{
		742	// for speed reasons, we specialcase single-string
		743	// byte or utf-8 strings as keys, but only when !stringref
		744
		745	if (ecb_expect_true (!dec->stringref))
		746	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		747	{
		748	I32 len = decode_uint (dec);
		749	char *key = (char *)dec->cur;
		750
		751	dec->cur += len;
		752
		753	hv_store (hv, key, len, decode_sv (dec), 0);
		754
		755	return;
		756	}
		757	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		758	{
		759	I32 len = decode_uint (dec);
		760	char *key = (char *)dec->cur;
		761
		762	dec->cur += len;
		763
		764	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		765	if (!is_utf8_string (key, len))
		766	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		767
		768	hv_store (hv, key, -len, decode_sv (dec), 0);
		769
		770	return;
		771	}
		772
		773	SV *k = decode_sv (dec);
		774	SV *v = decode_sv (dec);
		775
		776	hv_store_ent (hv, k, v, 0);
		777	SvREFCNT_dec (k);
		778
		779	fail:
		780	;
		781	}
		782
522	static SV *	783	static SV *
523	decode_hv (dec_t *dec)	784	decode_hv (dec_t *dec)
524	{	785	{
525	HV *hv = newHV ();	786	HV *hv = newHV ();
526		787
527	DEC_INC_DEPTH;	788	DEC_INC_DEPTH;
528		789
529	if ((*dec->cur & 31) == 31)	790	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	791	{
531	++dec->cur;	792	++dec->cur;
532		793
533	for (;;)	794	for (;;)
534	{	795	{
535	WANT (1);	796	WANT (1);
536		797
537	if (*dec->cur == (0xe0 | 31))	798	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	799	{
539	++dec->cur;	800	++dec->cur;
540	break;	801	break;
541	}	802	}
542		803
543	SV *k = decode_sv (dec);	804	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	805	}
548	}	806	}
549	else	807	else
550	{	808	{
551	int len = decode_uint (dec);	809	int pairs = decode_uint (dec);
552		810
553	while (len--)	811	while (pairs--)
554	{	812	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	}	813	}
561		814
562	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	816	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		817
720	fail:	818	fail:
721	SvREFCNT_dec (hv);	819	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	821	return &PL_sv_undef;
724	}	822	}
725		823
726	static SV *	824	static SV *
727	decode_str (dec_t *dec, int utf8)	825	decode_str (dec_t *dec, int utf8)
728	{	826	{
729	SV *sv;	827	SV *sv = 0;
730		828
731	if ((*dec->cur & 31) == 31)	829	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	830	{
		831	// indefinite length strings
733	++dec->cur;	832	++dec->cur;
734		833
		834	U8 major = *dec->cur & MAJOR_MISC;
		835
735	sv = newSVpvn ("", 0);	836	sv = newSVpvn ("", 0);
736		837
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	838	for (;;)
739	{	839	{
740	WANT (1);	840	WANT (1);
741		841
742	if (*dec->cur == (0xe0 | 31))	842	if ((*dec->cur - major) > LENGTH_EXT8)
		843	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	844	{
744	++dec->cur;	845	++dec->cur;
745	break;	846	break;
746	}	847	}
		848	else
		849	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		850
748	SV *sv2 = decode_sv (dec);	851	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	852
		853	WANT (len);
		854	sv_catpvn (sv, dec->cur, len);
		855	dec->cur += len;
750	}	856	}
751	}	857	}
752	else	858	else
753	{	859	{
754	STRLEN len = decode_uint (dec);	860	STRLEN len = decode_uint (dec);
755		861
756	WANT (len);	862	WANT (len);
757	sv = newSVpvn (dec->cur, len);	863	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	864	dec->cur += len;
		865
		866	if (ecb_expect_false (dec->stringref)
		867	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		868	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	869	}
760		870
761	if (utf8)	871	if (utf8)
		872	{
		873	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		874	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		875	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		876
762	SvUTF8_on (sv);	877	SvUTF8_on (sv);
		878	}
763		879
764	return sv;	880	return sv;
765		881
766	fail:	882	fail:
		883	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	884	return &PL_sv_undef;
768	}	885	}
769		886
770	static SV *	887	static SV *
771	decode_tagged (dec_t *dec)	888	decode_tagged (dec_t *dec)
772	{	889	{
		890	SV *sv = 0;
773	UV tag = decode_uint (dec);	891	UV tag = decode_uint (dec);
		892
		893	WANT (1);
		894
		895	switch (tag)
		896	{
		897	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	898	sv = decode_sv (dec);
		899	break;
775		900
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	901	case CBOR_TAG_INDIRECTION:
		902	sv = newRV_noinc (decode_sv (dec));
		903	break;
		904
		905	case CBOR_TAG_STRINGREF_NAMESPACE:
		906	{
		907	ENTER; SAVETMPS;
		908
		909	SAVESPTR (dec->stringref);
		910	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		911
		912	sv = decode_sv (dec);
		913
		914	FREETMPS; LEAVE;
		915	}
		916	break;
		917
		918	case CBOR_TAG_STRINGREF:
		919	{
		920	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		921	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		922
		923	UV idx = decode_uint (dec);
		924
		925	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		926	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		927
		928	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		929	}
		930	break;
		931
		932	case CBOR_TAG_VALUE_SHAREABLE:
		933	{
		934	if (ecb_expect_false (!dec->shareable))
		935	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		936
		937	if (dec->cbor.flags & F_ALLOW_CYCLES)
		938	{
		939	sv = newSV (0);
		940	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		941
		942	SV *osv = decode_sv (dec);
		943	sv_setsv (sv, osv);
		944	SvREFCNT_dec_NN (osv);
		945	}
		946	else
		947	{
		948	av_push (dec->shareable, &PL_sv_undef);
		949	int idx = AvFILLp (dec->shareable);
		950	sv = decode_sv (dec);
		951	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		952	}
		953	}
		954	break;
		955
		956	case CBOR_TAG_VALUE_SHAREDREF:
		957	{
		958	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		959	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		960
		961	UV idx = decode_uint (dec);
		962
		963	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		964	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		965
		966	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		967
		968	if (sv == &PL_sv_undef)
		969	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		970	}
		971	break;
		972
		973	case CBOR_TAG_PERL_OBJECT:
		974	{
		975	sv = decode_sv (dec);
		976
		977	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		978	ERR ("corrupted CBOR data (non-array perl object)");
		979
		980	AV *av = (AV *)SvRV (sv);
		981	int len = av_len (av) + 1;
		982	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		983
		984	if (!stash)
		985	ERR ("cannot decode perl-object (package does not exist)");
		986
		987	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		988
		989	if (!method)
		990	ERR ("cannot decode perl-object (package does not have a THAW method)");
		991
		992	dSP;
		993
		994	ENTER; SAVETMPS; PUSHMARK (SP);
		995	EXTEND (SP, len + 1);
		996	// we re-bless the reference to get overload and other niceties right
		997	PUSHs (*av_fetch (av, 0, 1));
		998	PUSHs (sv_cbor);
		999
		1000	int i;
		1001
		1002	for (i = 1; i < len; ++i)
		1003	PUSHs (*av_fetch (av, i, 1));
		1004
		1005	PUTBACK;
		1006	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1007	SPAGAIN;
		1008
		1009	if (SvTRUE (ERRSV))
		1010	{
		1011	FREETMPS; LEAVE;
		1012	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1013	}
		1014
		1015	SvREFCNT_dec (sv);
		1016	sv = SvREFCNT_inc (POPs);
		1017
		1018	PUTBACK;
		1019
		1020	FREETMPS; LEAVE;
		1021	}
		1022	break;
		1023
		1024	default:
		1025	{
		1026	sv = decode_sv (dec);
		1027
		1028	dSP;
		1029	ENTER; SAVETMPS; PUSHMARK (SP);
		1030	EXTEND (SP, 2);
		1031	PUSHs (newSVuv (tag));
		1032	PUSHs (sv);
		1033
		1034	PUTBACK;
		1035	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1036	SPAGAIN;
		1037
		1038	if (SvTRUE (ERRSV))
		1039	{
		1040	FREETMPS; LEAVE;
		1041	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1042	}
		1043
		1044	if (count)
		1045	{
		1046	SvREFCNT_dec (sv);
		1047	sv = SvREFCNT_inc (POPs);
		1048	}
		1049	else
		1050	{
		1051	AV *av = newAV ();
		1052	av_push (av, newSVuv (tag));
		1053	av_push (av, sv);
		1054
		1055	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1056	? cbor_tagged_stash
		1057	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1058	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1059	}
		1060
		1061	PUTBACK;
		1062
		1063	FREETMPS; LEAVE;
		1064	}
		1065	break;
		1066	}
		1067
777	return sv;	1068	return sv;
778		1069
779	AV *av = newAV ();	1070	fail:
780	av_push (av, newSVuv (tag));	1071	SvREFCNT_dec (sv);
781	av_push (av, sv);	1072	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1073	}
784		1074
785	static SV *	1075	static SV *
786	decode_sv (dec_t *dec)	1076	decode_sv (dec_t *dec)
787	{	1077	{
788	WANT (1);	1078	WANT (1);
789		1079
790	switch (*dec->cur >> 5)	1080	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1081	{
792	case 0: // unsigned int	1082	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1083	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1084	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1085	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1086	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1087	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1088	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1089
800	return decode_str (dec, 1);	1090	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)	1091	switch (*dec->cur++ & MINOR_MASK)
809	{	1092	{
810	case 20:	1093	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1094	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1095	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1096	#endif
814	return newSVsv (cbor_false);	1097	return newSVsv (types_false);
815	case 21:	1098	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1099	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1100	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1101	#endif
819	return newSVsv (cbor_true);	1102	return newSVsv (types_true);
820	case 22:	1103	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1104	return newSVsv (&PL_sv_undef);
		1105	case SIMPLE_UNDEF:
		1106	#if CBOR_SLOW
		1107	types_error = get_bool ("Types::Serialiser::error");
		1108	#endif
		1109	return newSVsv (types_error);
822		1110
823	case 25:	1111	case MISC_FLOAT16:
824	{	1112	{
825	WANT (2);	1113	WANT (2);
826		1114
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1115	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1116	dec->cur += 2;
829		1117
830	return newSVnv (ecb_binary16_to_float (fp));	1118	return newSVnv (ecb_binary16_to_float (fp));
831	}	1119	}
832		1120
833	case 26:	1121	case MISC_FLOAT32:
834	{	1122	{
835	uint32_t fp;	1123	uint32_t fp;
836	WANT (4);	1124	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1125	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1126	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1129	fp = ecb_bswap32 (fp);
842		1130
843	return newSVnv (ecb_binary32_to_float (fp));	1131	return newSVnv (ecb_binary32_to_float (fp));
844	}	1132	}
845		1133
846	case 27:	1134	case MISC_FLOAT64:
847	{	1135	{
848	uint64_t fp;	1136	uint64_t fp;
849	WANT (8);	1137	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1138	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1139	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1142	fp = ecb_bswap64 (fp);
855		1143
856	return newSVnv (ecb_binary64_to_double (fp));	1144	return newSVnv (ecb_binary64_to_double (fp));
857	}	1145	}
858		1146
859	// 0..19 unassigned	1147	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1148	// 24 reserved + unassigned simple (reserved values are not encodable)
		1149	// 28-30 unassigned misc
		1150	// 31 break code
861	default:	1151	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1152	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1153	}
864		1154
865	break;	1155	break;
866	}	1156	}
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		1157
924	fail:	1158	fail:
925	return &PL_sv_undef;	1159	return &PL_sv_undef;
926	}	1160	}
927		1161
928	static SV *	1162	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1163	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1164	{
931	dec_t dec;	1165	dec_t dec = { };
932	SV *sv;	1166	SV *sv;
		1167	STRLEN len;
		1168	char *data = SvPVbyte (string, len);
933		1169
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)	1170	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",	1171	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);	1172	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1173
969	dec.cbor = *cbor;	1174	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1175	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1176	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		1177
978	sv = decode_sv (&dec);	1178	sv = decode_sv (&dec);
979		1179
980	if (offset_return)	1180	if (offset_return)
981	*offset_return = dec.cur;	1181	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1184	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1185	dec.err = "garbage after CBOR object";
986		1186
987	if (dec.err)	1187	if (dec.err)
988	{	1188	{
		1189	if (dec.shareable)
		1190	{
		1191	// need to break cyclic links, which whould all be in shareable
		1192	int i;
		1193	SV **svp;
		1194
		1195	for (i = av_len (dec.shareable) + 1; i--; )
		1196	if ((svp = av_fetch (dec.shareable, i, 0)))
		1197	sv_setsv (*svp, &PL_sv_undef);
		1198	}
		1199
989	SvREFCNT_dec (sv);	1200	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1201	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1202	}
992		1203
993	sv = sv_2mortal (sv);	1204	sv = sv_2mortal (sv);
994		1205
995	return sv;	1206	return sv;
996	}	1207	}
997		1208
		1209	/////////////////////////////////////////////////////////////////////////////
		1210	// incremental parser
		1211
		1212	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1213
		1214	// returns 0 for notyet, 1 for success or error
		1215	static int
		1216	incr_parse (CBOR *self, SV *cborstr)
		1217	{
		1218	STRLEN cur;
		1219	SvPV (cborstr, cur);
		1220
		1221	while (ecb_expect_true (self->incr_need <= cur))
		1222	{
		1223	// table of integer count bytes
		1224	static I8 incr_len[MINOR_MASK + 1] = {
		1225	0, 0, 0, 0, 0, 0, 0, 0,
		1226	0, 0, 0, 0, 0, 0, 0, 0,
		1227	0, 0, 0, 0, 0, 0, 0, 0,
		1228	1, 2, 4, 8,-1,-1,-1,-2
		1229	};
		1230
		1231	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1232	U8 m = *p & MINOR_MASK;
		1233	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1234	I8 ilen = incr_len[m];
		1235
		1236	self->incr_need = self->incr_pos + 1;
		1237
		1238	if (ecb_expect_false (ilen < 0))
		1239	{
		1240	if (m != MINOR_INDEF)
		1241	return 1; // error
		1242
		1243	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1244	{
		1245	if (count >= 0)
		1246	return 1; // error
		1247
		1248	count = 1;
		1249	}
		1250	else
		1251	{
		1252	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1253	count = -1;
		1254	}
		1255	}
		1256	else
		1257	{
		1258	self->incr_need += ilen;
		1259	if (ecb_expect_false (self->incr_need > cur))
		1260	return 0;
		1261
		1262	int major = *p >> MAJOR_SHIFT;
		1263
		1264	switch (major)
		1265	{
		1266	case MAJOR_BYTES >> MAJOR_SHIFT:
		1267	case MAJOR_TEXT >> MAJOR_SHIFT:
		1268	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1269	case MAJOR_MAP >> MAJOR_SHIFT:
		1270	{
		1271	UV len;
		1272
		1273	if (ecb_expect_false (ilen))
		1274	{
		1275	len = 0;
		1276
		1277	do {
		1278	len = (len << 8) | *++p;
		1279	} while (--ilen);
		1280	}
		1281	else
		1282	len = m;
		1283
		1284	switch (major)
		1285	{
		1286	case MAJOR_BYTES >> MAJOR_SHIFT:
		1287	case MAJOR_TEXT >> MAJOR_SHIFT:
		1288	self->incr_need += len;
		1289	if (ecb_expect_false (self->incr_need > cur))
		1290	return 0;
		1291
		1292	break;
		1293
		1294	case MAJOR_MAP >> MAJOR_SHIFT:
		1295	len <<= 1;
		1296	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1297	if (len)
		1298	{
		1299	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1300	count = len + 1;
		1301	}
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307
		1308	self->incr_pos = self->incr_need;
		1309
		1310	if (count > 0)
		1311	{
		1312	while (!--count)
		1313	{
		1314	if (!AvFILLp (self->incr_count))
		1315	return 1; // done
		1316
		1317	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1318	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1319	}
		1320
		1321	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1322	}
		1323	}
		1324
		1325	return 0;
		1326	}
		1327
		1328
998	/////////////////////////////////////////////////////////////////////////////	1329	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1330	// XS interface functions
1000		1331
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1332	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1333
1003	BOOT:	1334	BOOT:
1004	{	1335	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1336	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1337	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1338
1008	cbor_true = get_bool ("CBOR::XS::true");	1339	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1340	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1341
		1342	types_true = get_bool ("Types::Serialiser::true" );
		1343	types_false = get_bool ("Types::Serialiser::false");
		1344	types_error = get_bool ("Types::Serialiser::error");
		1345
		1346	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1347
		1348	sv_cbor = newSVpv ("CBOR", 0);
		1349	SvREADONLY_on (sv_cbor);
1010	}	1350	}
1011		1351
1012	PROTOTYPES: DISABLE	1352	PROTOTYPES: DISABLE
1013		1353
1014	void CLONE (...)	1354	void CLONE (...)
1015	CODE:	1355	CODE:
1016	cbor_stash = 0;	1356	cbor_stash = 0;
		1357	cbor_tagged_stash = 0;
		1358	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1359	types_boolean_stash = 0;
1018		1360
1019	void new (char *klass)	1361	void new (char *klass)
1020	PPCODE:	1362	PPCODE:
1021	{	1363	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1364	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1372
1031	void shrink (CBOR *self, int enable = 1)	1373	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1374	ALIAS:
1033	shrink = F_SHRINK	1375	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1376	allow_unknown = F_ALLOW_UNKNOWN
		1377	allow_sharing = F_ALLOW_SHARING
		1378	allow_cycles = F_ALLOW_CYCLES
		1379	pack_strings = F_PACK_STRINGS
		1380	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1381	PPCODE:
1036	{	1382	{
1037	if (enable)	1383	if (enable)
1038	self->flags |= ix;	1384	self->flags |= ix;
1039	else	1385	else
…		…
1044		1390
1045	void get_shrink (CBOR *self)	1391	void get_shrink (CBOR *self)
1046	ALIAS:	1392	ALIAS:
1047	get_shrink = F_SHRINK	1393	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1394	get_allow_unknown = F_ALLOW_UNKNOWN
		1395	get_allow_sharing = F_ALLOW_SHARING
		1396	get_allow_cycles = F_ALLOW_CYCLES
		1397	get_pack_strings = F_PACK_STRINGS
		1398	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1399	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1400	XPUSHs (boolSV (self->flags & ix));
1051		1401
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1402	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1403	PPCODE:
…		…
1069	CODE:	1419	CODE:
1070	RETVAL = self->max_size;	1420	RETVAL = self->max_size;
1071	OUTPUT:	1421	OUTPUT:
1072	RETVAL	1422	RETVAL
1073		1423
1074	#if 0 //TODO	1424	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1425	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1426	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1427	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1428	XPUSHs (ST (0));
1083	}
1084		1429
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1430	SV *get_filter (CBOR *self)
1086	PPCODE:	1431	CODE:
1087	{	1432	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1433	OUTPUT:
1089	self->cb_sk_object = newHV ();	1434	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		1435
1109	void encode (CBOR *self, SV *scalar)	1436	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1437	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1438	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1439	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1452	EXTEND (SP, 2);
1126	PUSHs (sv);	1453	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1454	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1455	}
1129		1456
		1457	void incr_parse (CBOR *self, SV *cborstr)
		1458	ALIAS:
		1459	incr_parse_multiple = 1
		1460	PPCODE:
		1461	{
		1462	if (SvUTF8 (cborstr))
		1463	sv_utf8_downgrade (cborstr, 0);
		1464
		1465	if (!self->incr_count)
		1466	{
		1467	self->incr_count = newAV ();
		1468	self->incr_pos = 0;
		1469	self->incr_need = 1;
		1470
		1471	av_push (self->incr_count, newSViv (1));
		1472	}
		1473
		1474	do
		1475	{
		1476	if (!incr_parse (self, cborstr))
		1477	{
		1478	if (self->incr_need > self->max_size && self->max_size)
		1479	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1480	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1481
		1482	break;
		1483	}
		1484
		1485	SV *sv;
		1486	char *offset;
		1487
		1488	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1489	XPUSHs (sv);
		1490
		1491	sv_chop (cborstr, offset);
		1492
		1493	av_clear (self->incr_count);
		1494	av_push (self->incr_count, newSViv (1));
		1495
		1496	self->incr_pos = 0;
		1497	self->incr_need = self->incr_pos + 1;
		1498	}
		1499	while (ix);
		1500	}
		1501
		1502	void incr_reset (CBOR *self)
		1503	CODE:
		1504	{
		1505	SvREFCNT_dec (self->incr_count);
		1506	self->incr_count = 0;
		1507	}
		1508
1130	void DESTROY (CBOR *self)	1509	void DESTROY (CBOR *self)
1131	CODE:	1510	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1511	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1512
1135	PROTOTYPES: ENABLE	1513	PROTOTYPES: ENABLE
1136		1514
1137	void encode_cbor (SV *scalar)	1515	void encode_cbor (SV *scalar)
		1516	ALIAS:
		1517	encode_cbor = 0
		1518	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1519	PPCODE:
1139	{	1520	{
1140	CBOR cbor;	1521	CBOR cbor;
1141	cbor_init (&cbor);	1522	cbor_init (&cbor);
		1523	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1524	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1525	XPUSHs (scalar);
1144	}	1526	}
1145		1527
1146	void decode_cbor (SV *cborstr)	1528	void decode_cbor (SV *cborstr)

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