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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.49 by root, Mon Feb 8 04:11:11 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		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	{
		338	SV *sv = AvARRAY (av)[i];
		339	encode_sv (enc, sv ? sv : &PL_sv_undef);
		340	}
189		341
190	--enc->depth;	342	--enc->depth;
191	}	343	}
192		344
193	static void	345	static void
…		…
202		354
203	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
205		357
206	if (mg)	358	if (mg)
207	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	360	else
209	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
210		362
211	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
212	{	364	{
213	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
215	else	367	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		369
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	370	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	371	}
220		372
221	if (mg)	373	if (mg)
222	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		375
224	--enc->depth;	376	--enc->depth;
225	}	377	}
226		378
227	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
228	static void	380	static void
229	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
230	{	382	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
234	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
235		386
236	if (ecb_expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
237	{	388	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	390	? types_boolean_stash
		391	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		392	HV *error_stash = !CBOR_SLOW || types_error_stash
		393	? types_error_stash
		394	: gv_stashpv ("Types::Serialiser::Error", 1);
		395	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		396	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		398
242	if (SvSTASH (sv) == stash)	399	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	400
		401	if (stash == boolean_stash)
		402	{
		403	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		404	return;
		405	}
		406	else if (stash == error_stash)
		407	{
		408	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		409	return;
		410	}
		411	else if (stash == tagged_stash)
		412	{
		413	if (svt != SVt_PVAV)
		414	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		415
		416	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		417	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		418
		419	return;
		420	}
		421	}
		422
		423	if (ecb_expect_false (SvREFCNT (sv) > 1)
		424	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		425	{
		426	if (!enc->shareable)
		427	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		428
		429	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		430
		431	if (SvOK (*svp))
		432	{
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		434	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		435	return;
		436	}
244	else	437	else
245	{	438	{
246	#if 0 //TODO	439	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	440	++enc->shareable_idx;
		441	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		442	}
		443	}
		444
		445	if (ecb_expect_false (SvOBJECT (sv)))
		446	{
		447	HV *stash = SvSTASH (sv);
		448	GV *method;
		449
		450	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	451	{
		452	dSP;
		453
		454	ENTER; SAVETMPS; PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	455	// 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)));	456	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		457
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	458	PUTBACK;
		459	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	460	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	461	SPAGAIN;
263		462
264	// catch this surprisingly common error	463	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	464	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)));	465	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		466
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	467	encode_sv (enc, POPs);
272		468
		469	PUTBACK;
		470
273	FREETMPS; LEAVE;	471	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	}	472	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	473	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	474	{
		475	dSP;
		476
		477	ENTER; SAVETMPS; PUSHMARK (SP);
		478	EXTEND (SP, 2);
		479	// we re-bless the reference to get overload and other niceties right
		480	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		481	PUSHs (sv_cbor);
		482
		483	PUTBACK;
		484	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		485	SPAGAIN;
		486
		487	// catch this surprisingly common error
		488	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		489	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		490
		491	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		492	encode_uint (enc, MAJOR_ARRAY, count + 1);
		493	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		494
		495	while (count)
		496	encode_sv (enc, SP[1 - count--]);
		497
		498	PUTBACK;
		499
		500	FREETMPS; LEAVE;
		501	}
283	else	502	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	503	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	505	}
289	else if (svt == SVt_PVHV)	506	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	507	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	508	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	509	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	510	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	511	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	512	encode_tag (enc, CBOR_TAG_INDIRECTION);
		513	encode_sv (enc, sv);
		514	}
313	}	515	}
314		516
315	static void	517	static void
316	encode_nv (enc_t *enc, SV *sv)	518	encode_nv (enc_t *enc, SV *sv)
317	{	519	{
318	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
319		521
320	need (enc, 9);	522	need (enc, 9);
321		523
322	if (ecb_expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	526	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
326	{	528	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
328		530
329	*enc->cur++ = 0xe0 | 26;	531	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		532
331	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
333		535
334	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
336	}	538	}
337	else	539	else
338	{	540	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
340		542
341	*enc->cur++ = 0xe0 | 27;	543	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		544
343	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
345		547
346	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
355		557
356	if (SvPOKp (sv))	558	if (SvPOKp (sv))
357	{	559	{
358	STRLEN len;	560	STRLEN len;
359	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	563	}
362	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	565	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
365	{	567	{
366	if (SvIsUV (sv))	568	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	572	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	574	}
373	else if (SvROK (sv))	575	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	577	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	578	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	580	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	581	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	582	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	584	}
383		585
384	static SV *	586	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	587	encode_cbor (SV *scalar, CBOR *cbor)
386	{	588	{
387	enc_t enc;	589	enc_t enc = { 0 };
388		590
389	enc.cbor = *cbor;	591	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		595
395	SvPOK_only (enc.sv);	596	SvPOK_only (enc.sv);
		597
		598	if (cbor->flags & F_PACK_STRINGS)
		599	{
		600	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		601	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		602	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		603	}
		604
396	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
397		606
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	608	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		609
…		…
414	U8 *end; // end of input string	623	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
416	CBOR cbor;	625	CBOR cbor;
417	U32 depth; // recursion depth	626	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
		628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
419	} dec_t;	631	} dec_t;
420		632
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	633	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		634
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	635	#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	638	#define DEC_DEC_DEPTH --dec->depth
427		639
428	static UV	640	static UV
429	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
430	{	642	{
431	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
432	{	644	++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		645
438	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
439	WANT (2);	650	WANT (1);
440	dec->cur += 2;	651	dec->cur += 1;
441	return dec->cur[-1];	652	return dec->cur[-1];
442		653	}
443	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
444	WANT (3);	656	WANT (2);
445	dec->cur += 3;	657	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	659	| ((UV)dec->cur[-1]);
448		660	}
449	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
450	WANT (5);	663	WANT (4);
451	dec->cur += 5;	664	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	666	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	667	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	668	| ((UV)dec->cur[-1]);
456		669	}
457	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
458	WANT (9);	672	WANT (8);
459	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
460	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	680	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	681	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	682	| (((UV)dec->cur[-5]) << 32)
		683	#endif
464	| (((UV)dec->cur[-4]) << 24)	684	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	685	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	686	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	687	| ((UV)dec->cur[-1]);
468		688	}
469	default:	689	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		691
473	fail:	692	fail:
474	return 0;	693	return 0;
475	}	694	}
476		695
…		…
481	{	700	{
482	AV *av = newAV ();	701	AV *av = newAV ();
483		702
484	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
485		704
486	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	706	{
488	++dec->cur;	707	++dec->cur;
489		708
490	for (;;)	709	for (;;)
491	{	710	{
492	WANT (1);	711	WANT (1);
493		712
494	if (*dec->cur == (0xe0 | 31))	713	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	714	{
496	++dec->cur;	715	++dec->cur;
497	break;	716	break;
498	}	717	}
499		718
…		…
502	}	721	}
503	else	722	else
504	{	723	{
505	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
506		725
		726	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);	727	av_fill (av, len - 1);
508		728
509	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
511	}	731	}
…		…
517	SvREFCNT_dec (av);	737	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	738	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	739	return &PL_sv_undef;
520	}	740	}
521		741
		742	static void
		743	decode_he (dec_t *dec, HV *hv)
		744	{
		745	// for speed reasons, we specialcase single-string
		746	// byte or utf-8 strings as keys, but only when !stringref
		747
		748	if (ecb_expect_true (!dec->stringref))
		749	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		750	{
		751	I32 len = decode_uint (dec);
		752	char *key = (char *)dec->cur;
		753
		754	WANT (len);
		755	dec->cur += len;
		756
		757	hv_store (hv, key, len, decode_sv (dec), 0);
		758
		759	return;
		760	}
		761	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		762	{
		763	I32 len = decode_uint (dec);
		764	char *key = (char *)dec->cur;
		765
		766	WANT (len);
		767	dec->cur += len;
		768
		769	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		770	if (!is_utf8_string (key, len))
		771	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		772
		773	hv_store (hv, key, -len, decode_sv (dec), 0);
		774
		775	return;
		776	}
		777
		778	SV *k = decode_sv (dec);
		779	SV *v = decode_sv (dec);
		780
		781	hv_store_ent (hv, k, v, 0);
		782	SvREFCNT_dec (k);
		783
		784	fail:
		785	;
		786	}
		787
522	static SV *	788	static SV *
523	decode_hv (dec_t *dec)	789	decode_hv (dec_t *dec)
524	{	790	{
525	HV *hv = newHV ();	791	HV *hv = newHV ();
526		792
527	DEC_INC_DEPTH;	793	DEC_INC_DEPTH;
528		794
529	if ((*dec->cur & 31) == 31)	795	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	796	{
531	++dec->cur;	797	++dec->cur;
532		798
533	for (;;)	799	for (;;)
534	{	800	{
535	WANT (1);	801	WANT (1);
536		802
537	if (*dec->cur == (0xe0 | 31))	803	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	804	{
539	++dec->cur;	805	++dec->cur;
540	break;	806	break;
541	}	807	}
542		808
543	SV *k = decode_sv (dec);	809	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	810	}
548	}	811	}
549	else	812	else
550	{	813	{
551	int len = decode_uint (dec);	814	int pairs = decode_uint (dec);
552		815
553	while (len--)	816	while (pairs--)
554	{	817	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	}	818	}
561		819
562	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	821	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		822
720	fail:	823	fail:
721	SvREFCNT_dec (hv);	824	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	825	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	826	return &PL_sv_undef;
724	}	827	}
725		828
726	static SV *	829	static SV *
727	decode_str (dec_t *dec, int utf8)	830	decode_str (dec_t *dec, int utf8)
728	{	831	{
729	SV *sv;	832	SV *sv = 0;
730		833
731	if ((*dec->cur & 31) == 31)	834	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	835	{
		836	// indefinite length strings
733	++dec->cur;	837	++dec->cur;
734		838
		839	U8 major = *dec->cur & MAJOR_MISC;
		840
735	sv = newSVpvn ("", 0);	841	sv = newSVpvn ("", 0);
736		842
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	843	for (;;)
739	{	844	{
740	WANT (1);	845	WANT (1);
741		846
742	if (*dec->cur == (0xe0 | 31))	847	if ((*dec->cur - major) > LENGTH_EXT8)
		848	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	849	{
744	++dec->cur;	850	++dec->cur;
745	break;	851	break;
746	}	852	}
		853	else
		854	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		855
748	SV *sv2 = decode_sv (dec);	856	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	857
		858	WANT (len);
		859	sv_catpvn (sv, dec->cur, len);
		860	dec->cur += len;
750	}	861	}
751	}	862	}
752	else	863	else
753	{	864	{
754	STRLEN len = decode_uint (dec);	865	STRLEN len = decode_uint (dec);
755		866
756	WANT (len);	867	WANT (len);
757	sv = newSVpvn (dec->cur, len);	868	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	869	dec->cur += len;
		870
		871	if (ecb_expect_false (dec->stringref)
		872	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		873	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	874	}
760		875
761	if (utf8)	876	if (utf8)
		877	{
		878	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		879	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		880	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		881
762	SvUTF8_on (sv);	882	SvUTF8_on (sv);
		883	}
763		884
764	return sv;	885	return sv;
765		886
766	fail:	887	fail:
		888	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	889	return &PL_sv_undef;
768	}	890	}
769		891
770	static SV *	892	static SV *
771	decode_tagged (dec_t *dec)	893	decode_tagged (dec_t *dec)
772	{	894	{
		895	SV *sv = 0;
773	UV tag = decode_uint (dec);	896	UV tag = decode_uint (dec);
		897
		898	WANT (1);
		899
		900	switch (tag)
		901	{
		902	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	903	sv = decode_sv (dec);
		904	break;
775		905
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	906	case CBOR_TAG_INDIRECTION:
		907	sv = newRV_noinc (decode_sv (dec));
		908	break;
		909
		910	case CBOR_TAG_STRINGREF_NAMESPACE:
		911	{
		912	ENTER; SAVETMPS;
		913
		914	SAVESPTR (dec->stringref);
		915	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		916
		917	sv = decode_sv (dec);
		918
		919	FREETMPS; LEAVE;
		920	}
		921	break;
		922
		923	case CBOR_TAG_STRINGREF:
		924	{
		925	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		926	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		927
		928	UV idx = decode_uint (dec);
		929
		930	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		931	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		932
		933	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		934	}
		935	break;
		936
		937	case CBOR_TAG_VALUE_SHAREABLE:
		938	{
		939	if (ecb_expect_false (!dec->shareable))
		940	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		941
		942	if (dec->cbor.flags & F_ALLOW_CYCLES)
		943	{
		944	sv = newSV (0);
		945	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		946
		947	SV *osv = decode_sv (dec);
		948	sv_setsv (sv, osv);
		949	SvREFCNT_dec_NN (osv);
		950	}
		951	else
		952	{
		953	av_push (dec->shareable, &PL_sv_undef);
		954	int idx = AvFILLp (dec->shareable);
		955	sv = decode_sv (dec);
		956	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		957	}
		958	}
		959	break;
		960
		961	case CBOR_TAG_VALUE_SHAREDREF:
		962	{
		963	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		964	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		965
		966	UV idx = decode_uint (dec);
		967
		968	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		969	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		970
		971	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		972
		973	if (sv == &PL_sv_undef)
		974	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		975	}
		976	break;
		977
		978	case CBOR_TAG_PERL_OBJECT:
		979	{
		980	sv = decode_sv (dec);
		981
		982	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		983	ERR ("corrupted CBOR data (non-array perl object)");
		984
		985	AV *av = (AV *)SvRV (sv);
		986	int len = av_len (av) + 1;
		987	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		988
		989	if (!stash)
		990	ERR ("cannot decode perl-object (package does not exist)");
		991
		992	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		993
		994	if (!method)
		995	ERR ("cannot decode perl-object (package does not have a THAW method)");
		996
		997	dSP;
		998
		999	ENTER; SAVETMPS; PUSHMARK (SP);
		1000	EXTEND (SP, len + 1);
		1001	// we re-bless the reference to get overload and other niceties right
		1002	PUSHs (*av_fetch (av, 0, 1));
		1003	PUSHs (sv_cbor);
		1004
		1005	int i;
		1006
		1007	for (i = 1; i < len; ++i)
		1008	PUSHs (*av_fetch (av, i, 1));
		1009
		1010	PUTBACK;
		1011	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1012	SPAGAIN;
		1013
		1014	if (SvTRUE (ERRSV))
		1015	{
		1016	FREETMPS; LEAVE;
		1017	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1018	}
		1019
		1020	SvREFCNT_dec (sv);
		1021	sv = SvREFCNT_inc (POPs);
		1022
		1023	PUTBACK;
		1024
		1025	FREETMPS; LEAVE;
		1026	}
		1027	break;
		1028
		1029	default:
		1030	{
		1031	sv = decode_sv (dec);
		1032
		1033	dSP;
		1034	ENTER; SAVETMPS; PUSHMARK (SP);
		1035	EXTEND (SP, 2);
		1036	PUSHs (newSVuv (tag));
		1037	PUSHs (sv);
		1038
		1039	PUTBACK;
		1040	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1041	SPAGAIN;
		1042
		1043	if (SvTRUE (ERRSV))
		1044	{
		1045	FREETMPS; LEAVE;
		1046	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1047	}
		1048
		1049	if (count)
		1050	{
		1051	SvREFCNT_dec (sv);
		1052	sv = SvREFCNT_inc (POPs);
		1053	}
		1054	else
		1055	{
		1056	AV *av = newAV ();
		1057	av_push (av, newSVuv (tag));
		1058	av_push (av, sv);
		1059
		1060	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1061	? cbor_tagged_stash
		1062	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1063	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1064	}
		1065
		1066	PUTBACK;
		1067
		1068	FREETMPS; LEAVE;
		1069	}
		1070	break;
		1071	}
		1072
777	return sv;	1073	return sv;
778		1074
779	AV *av = newAV ();	1075	fail:
780	av_push (av, newSVuv (tag));	1076	SvREFCNT_dec (sv);
781	av_push (av, sv);	1077	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1078	}
784		1079
785	static SV *	1080	static SV *
786	decode_sv (dec_t *dec)	1081	decode_sv (dec_t *dec)
787	{	1082	{
788	WANT (1);	1083	WANT (1);
789		1084
790	switch (*dec->cur >> 5)	1085	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1086	{
792	case 0: // unsigned int	1087	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1088	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1089	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1090	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1091	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1092	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1093	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1094
800	return decode_str (dec, 1);	1095	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)	1096	switch (*dec->cur++ & MINOR_MASK)
809	{	1097	{
810	case 20:	1098	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1099	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1100	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1101	#endif
814	return newSVsv (cbor_false);	1102	return newSVsv (types_false);
815	case 21:	1103	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1104	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1105	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1106	#endif
819	return newSVsv (cbor_true);	1107	return newSVsv (types_true);
820	case 22:	1108	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1109	return newSVsv (&PL_sv_undef);
		1110	case SIMPLE_UNDEF:
		1111	#if CBOR_SLOW
		1112	types_error = get_bool ("Types::Serialiser::error");
		1113	#endif
		1114	return newSVsv (types_error);
822		1115
823	case 25:	1116	case MISC_FLOAT16:
824	{	1117	{
825	WANT (2);	1118	WANT (2);
826		1119
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1120	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1121	dec->cur += 2;
829		1122
830	return newSVnv (ecb_binary16_to_float (fp));	1123	return newSVnv (ecb_binary16_to_float (fp));
831	}	1124	}
832		1125
833	case 26:	1126	case MISC_FLOAT32:
834	{	1127	{
835	uint32_t fp;	1128	uint32_t fp;
836	WANT (4);	1129	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1130	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1131	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1134	fp = ecb_bswap32 (fp);
842		1135
843	return newSVnv (ecb_binary32_to_float (fp));	1136	return newSVnv (ecb_binary32_to_float (fp));
844	}	1137	}
845		1138
846	case 27:	1139	case MISC_FLOAT64:
847	{	1140	{
848	uint64_t fp;	1141	uint64_t fp;
849	WANT (8);	1142	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1143	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1144	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1147	fp = ecb_bswap64 (fp);
855		1148
856	return newSVnv (ecb_binary64_to_double (fp));	1149	return newSVnv (ecb_binary64_to_double (fp));
857	}	1150	}
858		1151
859	// 0..19 unassigned	1152	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1153	// 24 reserved + unassigned simple (reserved values are not encodable)
		1154	// 28-30 unassigned misc
		1155	// 31 break code
861	default:	1156	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1157	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1158	}
864		1159
865	break;	1160	break;
866	}	1161	}
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		1162
924	fail:	1163	fail:
925	return &PL_sv_undef;	1164	return &PL_sv_undef;
926	}	1165	}
927		1166
928	static SV *	1167	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1168	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1169	{
931	dec_t dec;	1170	dec_t dec = { 0 };
932	SV *sv;	1171	SV *sv;
		1172	STRLEN len;
		1173	char *data = SvPVbyte (string, len);
933		1174
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)	1175	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",	1176	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);	1177	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1178
969	dec.cbor = *cbor;	1179	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1180	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1181	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		1182
978	sv = decode_sv (&dec);	1183	sv = decode_sv (&dec);
979		1184
980	if (offset_return)	1185	if (offset_return)
981	*offset_return = dec.cur;	1186	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1189	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1190	dec.err = "garbage after CBOR object";
986		1191
987	if (dec.err)	1192	if (dec.err)
988	{	1193	{
		1194	if (dec.shareable)
		1195	{
		1196	// need to break cyclic links, which whould all be in shareable
		1197	int i;
		1198	SV **svp;
		1199
		1200	for (i = av_len (dec.shareable) + 1; i--; )
		1201	if ((svp = av_fetch (dec.shareable, i, 0)))
		1202	sv_setsv (*svp, &PL_sv_undef);
		1203	}
		1204
989	SvREFCNT_dec (sv);	1205	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1206	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1207	}
992		1208
993	sv = sv_2mortal (sv);	1209	sv = sv_2mortal (sv);
994		1210
995	return sv;	1211	return sv;
996	}	1212	}
997		1213
		1214	/////////////////////////////////////////////////////////////////////////////
		1215	// incremental parser
		1216
		1217	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1218
		1219	// returns 0 for notyet, 1 for success or error
		1220	static int
		1221	incr_parse (CBOR *self, SV *cborstr)
		1222	{
		1223	STRLEN cur;
		1224	SvPV (cborstr, cur);
		1225
		1226	while (ecb_expect_true (self->incr_need <= cur))
		1227	{
		1228	// table of integer count bytes
		1229	static I8 incr_len[MINOR_MASK + 1] = {
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	0, 0, 0, 0, 0, 0, 0, 0,
		1232	0, 0, 0, 0, 0, 0, 0, 0,
		1233	1, 2, 4, 8,-1,-1,-1,-2
		1234	};
		1235
		1236	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1237	U8 m = *p & MINOR_MASK;
		1238	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1239	I8 ilen = incr_len[m];
		1240
		1241	self->incr_need = self->incr_pos + 1;
		1242
		1243	if (ecb_expect_false (ilen < 0))
		1244	{
		1245	if (m != MINOR_INDEF)
		1246	return 1; // error
		1247
		1248	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1249	{
		1250	if (count >= 0)
		1251	return 1; // error
		1252
		1253	count = 1;
		1254	}
		1255	else
		1256	{
		1257	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1258	count = -1;
		1259	}
		1260	}
		1261	else
		1262	{
		1263	self->incr_need += ilen;
		1264	if (ecb_expect_false (self->incr_need > cur))
		1265	return 0;
		1266
		1267	int major = *p >> MAJOR_SHIFT;
		1268
		1269	switch (major)
		1270	{
		1271	case MAJOR_TAG >> MAJOR_SHIFT:
		1272	++count; // tags merely prefix another value
		1273	break;
		1274
		1275	case MAJOR_BYTES >> MAJOR_SHIFT:
		1276	case MAJOR_TEXT >> MAJOR_SHIFT:
		1277	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1278	case MAJOR_MAP >> MAJOR_SHIFT:
		1279	{
		1280	UV len;
		1281
		1282	if (ecb_expect_false (ilen))
		1283	{
		1284	len = 0;
		1285
		1286	do {
		1287	len = (len << 8) | *++p;
		1288	} while (--ilen);
		1289	}
		1290	else
		1291	len = m;
		1292
		1293	switch (major)
		1294	{
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	self->incr_need += len;
		1298	if (ecb_expect_false (self->incr_need > cur))
		1299	return 0;
		1300
		1301	break;
		1302
		1303	case MAJOR_MAP >> MAJOR_SHIFT:
		1304	len <<= 1;
		1305	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1306	if (len)
		1307	{
		1308	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1309	count = len + 1;
		1310	}
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316
		1317	self->incr_pos = self->incr_need;
		1318
		1319	if (count > 0)
		1320	{
		1321	while (!--count)
		1322	{
		1323	if (!AvFILLp (self->incr_count))
		1324	return 1; // done
		1325
		1326	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1327	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1328	}
		1329
		1330	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1331	}
		1332	}
		1333
		1334	return 0;
		1335	}
		1336
		1337
998	/////////////////////////////////////////////////////////////////////////////	1338	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1339	// XS interface functions
1000		1340
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1341	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1342
1003	BOOT:	1343	BOOT:
1004	{	1344	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1345	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1346	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1347
1008	cbor_true = get_bool ("CBOR::XS::true");	1348	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1349	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1350
		1351	types_true = get_bool ("Types::Serialiser::true" );
		1352	types_false = get_bool ("Types::Serialiser::false");
		1353	types_error = get_bool ("Types::Serialiser::error");
		1354
		1355	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1356
		1357	sv_cbor = newSVpv ("CBOR", 0);
		1358	SvREADONLY_on (sv_cbor);
1010	}	1359	}
1011		1360
1012	PROTOTYPES: DISABLE	1361	PROTOTYPES: DISABLE
1013		1362
1014	void CLONE (...)	1363	void CLONE (...)
1015	CODE:	1364	CODE:
1016	cbor_stash = 0;	1365	cbor_stash = 0;
		1366	cbor_tagged_stash = 0;
		1367	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1368	types_boolean_stash = 0;
1018		1369
1019	void new (char *klass)	1370	void new (char *klass)
1020	PPCODE:	1371	PPCODE:
1021	{	1372	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1373	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1381
1031	void shrink (CBOR *self, int enable = 1)	1382	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1383	ALIAS:
1033	shrink = F_SHRINK	1384	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1385	allow_unknown = F_ALLOW_UNKNOWN
		1386	allow_sharing = F_ALLOW_SHARING
		1387	allow_cycles = F_ALLOW_CYCLES
		1388	pack_strings = F_PACK_STRINGS
		1389	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1390	PPCODE:
1036	{	1391	{
1037	if (enable)	1392	if (enable)
1038	self->flags |= ix;	1393	self->flags |= ix;
1039	else	1394	else
…		…
1044		1399
1045	void get_shrink (CBOR *self)	1400	void get_shrink (CBOR *self)
1046	ALIAS:	1401	ALIAS:
1047	get_shrink = F_SHRINK	1402	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1403	get_allow_unknown = F_ALLOW_UNKNOWN
		1404	get_allow_sharing = F_ALLOW_SHARING
		1405	get_allow_cycles = F_ALLOW_CYCLES
		1406	get_pack_strings = F_PACK_STRINGS
		1407	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1408	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1409	XPUSHs (boolSV (self->flags & ix));
1051		1410
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1411	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1412	PPCODE:
…		…
1069	CODE:	1428	CODE:
1070	RETVAL = self->max_size;	1429	RETVAL = self->max_size;
1071	OUTPUT:	1430	OUTPUT:
1072	RETVAL	1431	RETVAL
1073		1432
1074	#if 0 //TODO	1433	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1434	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1435	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1436	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1437	XPUSHs (ST (0));
1083	}
1084		1438
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1439	SV *get_filter (CBOR *self)
1086	PPCODE:	1440	CODE:
1087	{	1441	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1442	OUTPUT:
1089	self->cb_sk_object = newHV ();	1443	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		1444
1109	void encode (CBOR *self, SV *scalar)	1445	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1446	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1447	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1448	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1461	EXTEND (SP, 2);
1126	PUSHs (sv);	1462	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1463	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1464	}
1129		1465
		1466	void incr_parse (CBOR *self, SV *cborstr)
		1467	ALIAS:
		1468	incr_parse_multiple = 1
		1469	PPCODE:
		1470	{
		1471	if (SvUTF8 (cborstr))
		1472	sv_utf8_downgrade (cborstr, 0);
		1473
		1474	if (!self->incr_count)
		1475	{
		1476	self->incr_count = newAV ();
		1477	self->incr_pos = 0;
		1478	self->incr_need = 1;
		1479
		1480	av_push (self->incr_count, newSViv (1));
		1481	}
		1482
		1483	do
		1484	{
		1485	if (!incr_parse (self, cborstr))
		1486	{
		1487	if (self->incr_need > self->max_size && self->max_size)
		1488	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1489	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1490
		1491	break;
		1492	}
		1493
		1494	SV *sv;
		1495	char *offset;
		1496
		1497	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1498	XPUSHs (sv);
		1499
		1500	sv_chop (cborstr, offset);
		1501
		1502	av_clear (self->incr_count);
		1503	av_push (self->incr_count, newSViv (1));
		1504
		1505	self->incr_pos = 0;
		1506	self->incr_need = self->incr_pos + 1;
		1507	}
		1508	while (ix);
		1509	}
		1510
		1511	void incr_reset (CBOR *self)
		1512	CODE:
		1513	{
		1514	SvREFCNT_dec (self->incr_count);
		1515	self->incr_count = 0;
		1516	}
		1517
1130	void DESTROY (CBOR *self)	1518	void DESTROY (CBOR *self)
1131	CODE:	1519	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1520	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1521
1135	PROTOTYPES: ENABLE	1522	PROTOTYPES: ENABLE
1136		1523
1137	void encode_cbor (SV *scalar)	1524	void encode_cbor (SV *scalar)
		1525	ALIAS:
		1526	encode_cbor = 0
		1527	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1528	PPCODE:
1139	{	1529	{
1140	CBOR cbor;	1530	CBOR cbor;
1141	cbor_init (&cbor);	1531	cbor_init (&cbor);
		1532	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1533	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1534	XPUSHs (scalar);
1144	}	1535	}
1145		1536
1146	void decode_cbor (SV *cborstr)	1537	void decode_cbor (SV *cborstr)

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