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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.59 by root, Fri Nov 25 23:37:27 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"
		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	};
13		65
14	// known tags	66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
17	// inofficial extensions (pending iana registration)	69	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	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
20		77
21	// rfc7049	78	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
28		85
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		90
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		96
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	98	};
42		99
43	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
44	#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_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
45		108
46	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
47		110
48	#define SB do {	111	#define SB do {
49	#define SE } while (0)	112	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
63	#endif	126	#endif
64		127
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		130
68	typedef struct {	131	typedef struct {
69	U32 flags;	132	U32 flags;
70	U32 max_depth;	133	U32 max_depth;
71	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	141	} CBOR;
73		142
74	ecb_inline void	143	ecb_inline void
75	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
76	{	145	{
77	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
79	}	155	}
80		156
81	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	158	// utility functions
83		159
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	182	#endif
107	}	183	}
108	}	184	}
109		185
110	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
111	// fp hell	187	ecb_inline int
112		188	minimum_string_length (UV idx)
113	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
114		200
115	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
116	// encoder	202	// encoder
117		203
118	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
123	SV *sv; // result scalar	209	SV *sv; // result scalar
124	CBOR cbor;	210	CBOR cbor;
125	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
126	} enc_t;	216	} enc_t;
127		217
128	ecb_inline void	218	ecb_inline void
129	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
130	{	220	{
…		…
147	static void	237	static void
148	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
149	{	239	{
150	need (enc, 9);	240	need (enc, 9);
151		241
152	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
154	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
155	{	245	{
156	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	247	*enc->cur++ = len;
158	}	248	}
159	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
160	{	250	{
161	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	253	*enc->cur++ = len;
164	}	254	}
165	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
166	{	256	{
167	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	261	*enc->cur++ = len;
172	}	262	}
173	else	263	else
174	{	264	{
175	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	273	*enc->cur++ = len;
184	}	274	}
185	}	275	}
186		276
187	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	286	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	317	need (enc, len);
192	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
193	enc->cur += len;	319	enc->cur += len;
194	}	320	}
195		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
196	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
197		348
198	static void	349	static void
199	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
200	{	351	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
205		356
206	++enc->depth;	357	++enc->depth;
207		358
208	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		360
		361	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
211	{	363	{
212	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
215		373
216	--enc->depth;	374	--enc->depth;
217	}	375	}
218		376
219	static void	377	static void
…		…
228		386
229	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
231		389
232	if (mg)	390	if (mg)
233	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	392	else
235	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
236		394
237	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
238	{	396	{
239	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
241	else	399	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		401
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	403	}
246		404
247	if (mg)	405	if (mg)
248	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		407
250	--enc->depth;	408	--enc->depth;
251	}	409	}
252		410
253	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
254	static void	412	static void
255	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
256	{	414	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
260	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
261		418
262	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
263	{	420	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	422	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	426	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	428	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		430
		431	HV *stash = SvSTASH (sv);
		432
274	if (SvSTASH (sv) == boolean_stash)	433	if (stash == boolean_stash)
275	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
276	else if (SvSTASH (sv) == error_stash)	438	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 | 23);	439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
278	else if (SvSTASH (sv) == tagged_stash)	443	else if (stash == tagged_stash)
279	{	444	{
280	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		447
283	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
284	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
285	}	468	}
286	else	469	else
287	{	470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
288	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		490
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	494	SPAGAIN;
302		495
303	// catch this surprisingly common error	496	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		499
307	sv = POPs;	500	encode_sv (enc, POPs);
		501
308	PUTBACK;	502	PUTBACK;
309		503
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	504	FREETMPS; LEAVE;
313	}	505	}
		506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
314	else	537	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	540	}
319	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	544	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 | 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 | 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 | 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 | 23);
340	else	545	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
343	}	550	}
344		551
345	static void	552	static void
346	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
347	{	554	{
348	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
349		556
350	need (enc, 9);	557	need (enc, 9);
351		558
352	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	561	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
356	{	563	{
357	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
358		565
359	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
360		567
361	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
363		570
364	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
366	}	573	}
367	else	574	else
368	{	575	{
369	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
370		577
371	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
372		579
373	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
375		582
376	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
385		592
386	if (SvPOKp (sv))	593	if (SvPOKp (sv))
387	{	594	{
388	STRLEN len;	595	STRLEN len;
389	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
391	}	598	}
392	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	600	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
395	{	602	{
396	if (SvIsUV (sv))	603	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
400	else	607	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
402	}	609	}
403	else if (SvROK (sv))	610	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	612	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
409	else	616	else
410	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	619	}
413		620
414	static SV *	621	static SV *
415	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
416	{	623	{
417	enc_t enc;	624	enc_t enc = { 0 };
418		625
419	enc.cbor = *cbor;	626	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		630
425	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
426	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
427		641
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
430		644
…		…
444	U8 *end; // end of input string	658	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
446	CBOR cbor;	660	CBOR cbor;
447	U32 depth; // recursion depth	661	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
		666	SV *err_sv; // optional sv for error, needs to be freed
449	} dec_t;	667	} dec_t;
450		668
451	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	669	// set dec->err to ERRSV
		670	ecb_cold static void
		671	err_errsv (dec_t *dec)
		672	{
		673	if (!dec->err)
		674	{
		675	dec->err_sv = newSVsv (ERRSV);
452		676
453	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	677	// chop off the trailing \n
		678	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		679	*SvEND (dec->err_sv) = 0;
454		680
		681	dec->err = SvPVutf8_nolen (dec->err_sv);
		682	}
		683	}
		684
		685	// the following functions are used to reduce code size and help the compiler to optimise
		686	ecb_cold static void
		687	err_set (dec_t *dec, const char *reason)
		688	{
		689	if (!dec->err)
		690	dec->err = reason;
		691	}
		692
		693	ecb_cold static void
		694	err_unexpected_end (dec_t *dec)
		695	{
		696	err_set (dec, "unexpected end of CBOR data");
		697	}
		698
		699	ecb_cold static void
		700	err_nesting_exceeded (dec_t *dec)
		701	{
		702	err_set (dec, ERR_NESTING_EXCEEDED);
		703	}
		704
		705	#define ERR_DO(do) SB do; goto fail; SE
		706	#define ERR(reason) ERR_DO (err_set (dec, reason))
		707	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		708
		709	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		710
455	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	711	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
456	#define DEC_DEC_DEPTH --dec->depth	712	#define DEC_DEC_DEPTH --dec->depth
457		713
458	static UV	714	static UV
459	decode_uint (dec_t *dec)	715	decode_uint (dec_t *dec)
460	{	716	{
461	switch (*dec->cur & 31)	717	U8 m = *dec->cur & MINOR_MASK;
462	{	718	++dec->cur;
463	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
464	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
465	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
466	return *dec->cur++ & 31;
467		719
468	case 24:	720	if (ecb_expect_true (m < LENGTH_EXT1))
		721	return m;
		722	else if (ecb_expect_true (m == LENGTH_EXT1))
		723	{
469	WANT (2);	724	WANT (1);
470	dec->cur += 2;	725	dec->cur += 1;
471	return dec->cur[-1];	726	return dec->cur[-1];
472		727	}
473	case 25:	728	else if (ecb_expect_true (m == LENGTH_EXT2))
		729	{
474	WANT (3);	730	WANT (2);
475	dec->cur += 3;	731	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	732	return (((UV)dec->cur[-2]) << 8)
477	| ((UV)dec->cur[-1]);	733	| ((UV)dec->cur[-1]);
478		734	}
479	case 26:	735	else if (ecb_expect_true (m == LENGTH_EXT4))
		736	{
480	WANT (5);	737	WANT (4);
481	dec->cur += 5;	738	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	739	return (((UV)dec->cur[-4]) << 24)
483	| (((UV)dec->cur[-3]) << 16)	740	| (((UV)dec->cur[-3]) << 16)
484	| (((UV)dec->cur[-2]) << 8)	741	| (((UV)dec->cur[-2]) << 8)
485	| ((UV)dec->cur[-1]);	742	| ((UV)dec->cur[-1]);
486		743	}
487	case 27:	744	else if (ecb_expect_true (m == LENGTH_EXT8))
		745	{
488	WANT (9);	746	WANT (8);
489	dec->cur += 9;	747	dec->cur += 8;
		748
		749	return
		750	#if UVSIZE < 8
		751	0
		752	#else
490	return (((UV)dec->cur[-8]) << 56)	753	(((UV)dec->cur[-8]) << 56)
491	| (((UV)dec->cur[-7]) << 48)	754	| (((UV)dec->cur[-7]) << 48)
492	| (((UV)dec->cur[-6]) << 40)	755	| (((UV)dec->cur[-6]) << 40)
493	| (((UV)dec->cur[-5]) << 32)	756	| (((UV)dec->cur[-5]) << 32)
		757	#endif
494	| (((UV)dec->cur[-4]) << 24)	758	| (((UV)dec->cur[-4]) << 24)
495	| (((UV)dec->cur[-3]) << 16)	759	| (((UV)dec->cur[-3]) << 16)
496	| (((UV)dec->cur[-2]) << 8)	760	| (((UV)dec->cur[-2]) << 8)
497	| ((UV)dec->cur[-1]);	761	| ((UV)dec->cur[-1]);
498		762	}
499	default:	763	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	764	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		765
503	fail:	766	fail:
504	return 0;	767	return 0;
505	}	768	}
506		769
…		…
511	{	774	{
512	AV *av = newAV ();	775	AV *av = newAV ();
513		776
514	DEC_INC_DEPTH;	777	DEC_INC_DEPTH;
515		778
516	if ((*dec->cur & 31) == 31)	779	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
517	{	780	{
518	++dec->cur;	781	++dec->cur;
519		782
520	for (;;)	783	for (;;)
521	{	784	{
522	WANT (1);	785	WANT (1);
523		786
524	if (*dec->cur == (0xe0 | 31))	787	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
525	{	788	{
526	++dec->cur;	789	++dec->cur;
527	break;	790	break;
528	}	791	}
529		792
530	av_push (av, decode_sv (dec));	793	av_push (av, decode_sv (dec));
531	}	794	}
532	}	795	}
533	else	796	else
534	{	797	{
535	int i, len = decode_uint (dec);	798	UV i, len = decode_uint (dec);
536		799
		800	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
537	av_fill (av, len - 1);	801	av_fill (av, len - 1);
538		802
539	for (i = 0; i < len; ++i)	803	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	804	AvARRAY (av)[i] = decode_sv (dec);
541	}	805	}
…		…
547	SvREFCNT_dec (av);	811	SvREFCNT_dec (av);
548	DEC_DEC_DEPTH;	812	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	813	return &PL_sv_undef;
550	}	814	}
551		815
		816	static void
		817	decode_he (dec_t *dec, HV *hv)
		818	{
		819	// for speed reasons, we specialcase single-string
		820	// byte or utf-8 strings as keys, but only when !stringref
		821
		822	if (ecb_expect_true (!dec->stringref))
		823	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		824	{
		825	STRLEN len = decode_uint (dec);
		826	char *key = (char *)dec->cur;
		827
		828	WANT (len);
		829	dec->cur += len;
		830
		831	hv_store (hv, key, len, decode_sv (dec), 0);
		832
		833	return;
		834	}
		835	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		836	{
		837	STRLEN len = decode_uint (dec);
		838	char *key = (char *)dec->cur;
		839
		840	WANT (len);
		841	dec->cur += len;
		842
		843	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		844	if (!is_utf8_string (key, len))
		845	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		846
		847	hv_store (hv, key, -len, decode_sv (dec), 0);
		848
		849	return;
		850	}
		851
		852	SV *k = decode_sv (dec);
		853	SV *v = decode_sv (dec);
		854
		855	// we leak memory if uncaught exceptions are thrown by random magical
		856	// methods, and this is hopefully the only place where it can happen,
		857	// so if there is a chance of an exception, take the very slow path.
		858	// since catching exceptions is "undocumented/internal/forbidden" by
		859	// the new p5p powers, we need to call out to a perl function :/
		860	if (ecb_expect_false (SvAMAGIC (k)))
		861	{
		862	dSP;
		863
		864	ENTER; SAVETMPS;
		865	PUSHMARK (SP);
		866	EXTEND (SP, 3);
		867	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		868	PUSHs (sv_2mortal (k));
		869	PUSHs (sv_2mortal (v));
		870
		871	PUTBACK;
		872	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		873	SPAGAIN;
		874
		875	FREETMPS; LEAVE;
		876
		877	if (SvTRUE (ERRSV))
		878	ERR_ERRSV;
		879
		880	return;
		881	}
		882
		883	hv_store_ent (hv, k, v, 0);
		884	SvREFCNT_dec (k);
		885
		886	fail:
		887	;
		888	}
		889
552	static SV *	890	static SV *
553	decode_hv (dec_t *dec)	891	decode_hv (dec_t *dec)
554	{	892	{
555	HV *hv = newHV ();	893	HV *hv = newHV ();
556		894
557	DEC_INC_DEPTH;	895	DEC_INC_DEPTH;
558		896
559	if ((*dec->cur & 31) == 31)	897	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
560	{	898	{
561	++dec->cur;	899	++dec->cur;
562		900
563	for (;;)	901	for (;;)
564	{	902	{
565	WANT (1);	903	WANT (1);
566		904
567	if (*dec->cur == (0xe0 | 31))	905	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
568	{	906	{
569	++dec->cur;	907	++dec->cur;
570	break;	908	break;
571	}	909	}
572		910
573	SV *k = decode_sv (dec);	911	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	912	}
578	}	913	}
579	else	914	else
580	{	915	{
581	int len = decode_uint (dec);	916	UV pairs = decode_uint (dec);
582		917
		918	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		919
583	while (len--)	920	while (pairs--)
584	{	921	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	922	}
591		923
592	DEC_DEC_DEPTH;	924	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	925	return newRV_noinc ((SV *)hv);
594		926
…		…
601	static SV *	933	static SV *
602	decode_str (dec_t *dec, int utf8)	934	decode_str (dec_t *dec, int utf8)
603	{	935	{
604	SV *sv = 0;	936	SV *sv = 0;
605		937
606	if ((*dec->cur & 31) == 31)	938	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
607	{	939	{
		940	// indefinite length strings
608	++dec->cur;	941	++dec->cur;
609		942
		943	U8 major = *dec->cur & MAJOR_MISC;
		944
610	sv = newSVpvn ("", 0);	945	sv = newSVpvn ("", 0);
611		946
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	947	for (;;)
614	{	948	{
615	WANT (1);	949	WANT (1);
616		950
617	if (*dec->cur == (0xe0 | 31))	951	if ((*dec->cur - major) > LENGTH_EXT8)
		952	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	953	{
619	++dec->cur;	954	++dec->cur;
620	break;	955	break;
621	}	956	}
		957	else
		958	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		959
623	sv_catsv (sv, decode_sv (dec));	960	STRLEN len = decode_uint (dec);
		961
		962	WANT (len);
		963	sv_catpvn (sv, dec->cur, len);
		964	dec->cur += len;
624	}	965	}
625	}	966	}
626	else	967	else
627	{	968	{
628	STRLEN len = decode_uint (dec);	969	STRLEN len = decode_uint (dec);
629		970
630	WANT (len);	971	WANT (len);
631	sv = newSVpvn (dec->cur, len);	972	sv = newSVpvn (dec->cur, len);
632	dec->cur += len;	973	dec->cur += len;
		974
		975	if (ecb_expect_false (dec->stringref)
		976	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		977	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
633	}	978	}
634		979
635	if (utf8)	980	if (utf8)
		981	{
		982	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		983	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		984	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		985
636	SvUTF8_on (sv);	986	SvUTF8_on (sv);
		987	}
637		988
638	return sv;	989	return sv;
639		990
640	fail:	991	fail:
641	SvREFCNT_dec (sv);	992	SvREFCNT_dec (sv);
…		…
643	}	994	}
644		995
645	static SV *	996	static SV *
646	decode_tagged (dec_t *dec)	997	decode_tagged (dec_t *dec)
647	{	998	{
		999	SV *sv = 0;
648	UV tag = decode_uint (dec);	1000	UV tag = decode_uint (dec);
		1001
		1002	WANT (1);
		1003
		1004	switch (tag)
		1005	{
		1006	case CBOR_TAG_MAGIC:
649	SV *sv = decode_sv (dec);	1007	sv = decode_sv (dec);
		1008	break;
650		1009
651	if (tag == CBOR_TAG_MAGIC)	1010	case CBOR_TAG_INDIRECTION:
652	return sv;	1011	sv = newRV_noinc (decode_sv (dec));
		1012	break;
653		1013
654	if (tag == CBOR_TAG_PERL_OBJECT)	1014	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	1015	{
		1016	// do nmot use SAVETMPS/FREETMPS, as these will
		1017	// erase mortalised caches, e.g. "shareable"
		1018	ENTER;
		1019
		1020	SAVESPTR (dec->stringref);
		1021	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1022
		1023	sv = decode_sv (dec);
		1024
		1025	LEAVE;
		1026	}
		1027	break;
		1028
		1029	case CBOR_TAG_STRINGREF:
		1030	{
		1031	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1032	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1033
		1034	UV idx = decode_uint (dec);
		1035
		1036	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1037	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1038
		1039	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1040	}
		1041	break;
		1042
		1043	case CBOR_TAG_VALUE_SHAREABLE:
		1044	{
		1045	if (ecb_expect_false (!dec->shareable))
		1046	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1047
		1048	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1049	{
		1050	sv = newSV (0);
		1051	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1052
		1053	SV *osv = decode_sv (dec);
		1054	sv_setsv (sv, osv);
		1055	SvREFCNT_dec_NN (osv);
		1056	}
		1057	else
		1058	{
		1059	av_push (dec->shareable, &PL_sv_undef);
		1060	int idx = AvFILLp (dec->shareable);
		1061	sv = decode_sv (dec);
		1062	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1063	}
		1064	}
		1065	break;
		1066
		1067	case CBOR_TAG_VALUE_SHAREDREF:
		1068	{
		1069	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1070	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1071
		1072	UV idx = decode_uint (dec);
		1073
		1074	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1075	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1076
		1077	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1078
		1079	if (sv == &PL_sv_undef)
		1080	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1081	}
		1082	break;
		1083
		1084	case CBOR_TAG_PERL_OBJECT:
		1085	{
		1086	sv = decode_sv (dec);
		1087
656	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1088	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	1089	ERR ("corrupted CBOR data (non-array perl object)");
		1090
		1091	AV *av = (AV *)SvRV (sv);
		1092	int len = av_len (av) + 1;
		1093	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1094
		1095	if (!stash)
		1096	ERR ("cannot decode perl-object (package does not exist)");
		1097
		1098	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1099
		1100	if (!method)
		1101	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1102
		1103	dSP;
		1104
		1105	ENTER; SAVETMPS;
		1106	PUSHMARK (SP);
		1107	EXTEND (SP, len + 1);
		1108	// we re-bless the reference to get overload and other niceties right
		1109	PUSHs (*av_fetch (av, 0, 1));
		1110	PUSHs (sv_cbor);
		1111
		1112	int i;
		1113
		1114	for (i = 1; i < len; ++i)
		1115	PUSHs (*av_fetch (av, i, 1));
		1116
		1117	PUTBACK;
		1118	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1119	SPAGAIN;
		1120
		1121	if (SvTRUE (ERRSV))
		1122	{
		1123	FREETMPS; LEAVE;
		1124	ERR_ERRSV;
		1125	}
		1126
		1127	SvREFCNT_dec (sv);
		1128	sv = SvREFCNT_inc (POPs);
		1129
		1130	PUTBACK;
		1131
		1132	FREETMPS; LEAVE;
658		1133	}
659	// TODO	1134	break;
660	}
661		1135
		1136	default:
		1137	{
		1138	SV *tag_sv = newSVuv (tag);
		1139
		1140	sv = decode_sv (dec);
		1141
		1142	dSP;
		1143	ENTER; SAVETMPS;
		1144	SAVESTACK_POS ();
		1145	PUSHMARK (SP);
		1146	EXTEND (SP, 2);
		1147	PUSHs (tag_sv);
		1148	PUSHs (sv);
		1149
		1150	PUTBACK;
		1151	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1152	SPAGAIN;
		1153
		1154	if (SvTRUE (ERRSV))
		1155	{
		1156	SvREFCNT_dec (tag_sv);
		1157	FREETMPS; LEAVE;
		1158	ERR_ERRSV;
		1159	}
		1160
		1161	if (count)
		1162	{
		1163	SvREFCNT_dec (tag_sv);
		1164	SvREFCNT_dec (sv);
		1165	sv = SvREFCNT_inc (POPs);
		1166	}
		1167	else
		1168	{
662	AV *av = newAV ();	1169	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1170	av_push (av, tag_sv);
664	av_push (av, sv);	1171	av_push (av, sv);
665		1172
666	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1173	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
667	? cbor_tagged_stash	1174	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1175	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1176	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1177	}
		1178
		1179	PUTBACK;
		1180
		1181	FREETMPS; LEAVE;
		1182	}
		1183	break;
		1184	}
		1185
		1186	return sv;
671		1187
672	fail:	1188	fail:
673	SvREFCNT_dec (sv);	1189	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1190	return &PL_sv_undef;
675	}	1191	}
…		…
677	static SV *	1193	static SV *
678	decode_sv (dec_t *dec)	1194	decode_sv (dec_t *dec)
679	{	1195	{
680	WANT (1);	1196	WANT (1);
681		1197
682	switch (*dec->cur >> 5)	1198	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1199	{
684	case 0: // unsigned int	1200	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1201	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1202	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1203	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1204	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1205	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1206	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1207
692	case 4: // array	1208	case MAJOR_MISC >> MAJOR_SHIFT:
693	return decode_av (dec);
694	case 5: // map
695	return decode_hv (dec);
696	case 6: // tag
697	return decode_tagged (dec);
698	case 7: // misc
699	switch (*dec->cur++ & 31)	1209	switch (*dec->cur++ & MINOR_MASK)
700	{	1210	{
701	case 20:	1211	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1212	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1213	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1214	#endif
705	return newSVsv (types_false);	1215	return newSVsv (types_false);
706	case 21:	1216	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1217	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1218	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1219	#endif
710	return newSVsv (types_true);	1220	return newSVsv (types_true);
711	case 22:	1221	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1222	return newSVsv (&PL_sv_undef);
713	case 23:	1223	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1224	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1225	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1226	#endif
717	return newSVsv (types_error);	1227	return newSVsv (types_error);
718		1228
719	case 25:	1229	case MISC_FLOAT16:
720	{	1230	{
721	WANT (2);	1231	WANT (2);
722		1232
723	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1233	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
724	dec->cur += 2;	1234	dec->cur += 2;
725		1235
726	return newSVnv (ecb_binary16_to_float (fp));	1236	return newSVnv (ecb_binary16_to_float (fp));
727	}	1237	}
728		1238
729	case 26:	1239	case MISC_FLOAT32:
730	{	1240	{
731	uint32_t fp;	1241	uint32_t fp;
732	WANT (4);	1242	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1243	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1244	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1247	fp = ecb_bswap32 (fp);
738		1248
739	return newSVnv (ecb_binary32_to_float (fp));	1249	return newSVnv (ecb_binary32_to_float (fp));
740	}	1250	}
741		1251
742	case 27:	1252	case MISC_FLOAT64:
743	{	1253	{
744	uint64_t fp;	1254	uint64_t fp;
745	WANT (8);	1255	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1256	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1257	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1260	fp = ecb_bswap64 (fp);
751		1261
752	return newSVnv (ecb_binary64_to_double (fp));	1262	return newSVnv (ecb_binary64_to_double (fp));
753	}	1263	}
754		1264
755	// 0..19 unassigned	1265	// 0..19 unassigned simple
756	// 24 reserved + unassigned (reserved values are not encodable)	1266	// 24 reserved + unassigned simple (reserved values are not encodable)
		1267	// 28-30 unassigned misc
		1268	// 31 break code
757	default:	1269	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1270	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1271	}
760		1272
761	break;	1273	break;
762	}	1274	}
763		1275
…		…
766	}	1278	}
767		1279
768	static SV *	1280	static SV *
769	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1281	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
770	{	1282	{
771	dec_t dec;	1283	dec_t dec = { 0 };
772	SV *sv;	1284	SV *sv;
		1285	STRLEN len;
		1286	char *data = SvPVbyte (string, len);
773		1287
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/*SvGETMAGIC (string);*/
780	if (SvMAGICAL (string) || !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1288	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1289	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1290	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1291
809	dec.cbor = *cbor;	1292	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1293	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1294	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1295
815	sv = decode_sv (&dec);	1296	sv = decode_sv (&dec);
816		1297
817	if (offset_return)	1298	if (offset_return)
818	*offset_return = dec.cur;	1299	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1302	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1303	dec.err = "garbage after CBOR object";
823		1304
824	if (dec.err)	1305	if (dec.err)
825	{	1306	{
		1307	if (dec.shareable)
		1308	{
		1309	// need to break cyclic links, which would all be in shareable
		1310	int i;
		1311	SV **svp;
		1312
		1313	for (i = av_len (dec.shareable) + 1; i--; )
		1314	if ((svp = av_fetch (dec.shareable, i, 0)))
		1315	sv_setsv (*svp, &PL_sv_undef);
		1316	}
		1317
826	SvREFCNT_dec (sv);	1318	SvREFCNT_dec (sv);
		1319
		1320	if (dec.err_sv)
		1321	sv_2mortal (dec.err_sv);
		1322
827	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1323	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
828	}	1324	}
829		1325
830	sv = sv_2mortal (sv);	1326	sv = sv_2mortal (sv);
831		1327
832	return sv;	1328	return sv;
833	}	1329	}
834		1330
		1331	/////////////////////////////////////////////////////////////////////////////
		1332	// incremental parser
		1333
		1334	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1335
		1336	// returns 0 for notyet, 1 for success or error
		1337	static int
		1338	incr_parse (CBOR *self, SV *cborstr)
		1339	{
		1340	STRLEN cur;
		1341	SvPV (cborstr, cur);
		1342
		1343	while (ecb_expect_true (self->incr_need <= cur))
		1344	{
		1345	// table of integer count bytes
		1346	static I8 incr_len[MINOR_MASK + 1] = {
		1347	0, 0, 0, 0, 0, 0, 0, 0,
		1348	0, 0, 0, 0, 0, 0, 0, 0,
		1349	0, 0, 0, 0, 0, 0, 0, 0,
		1350	1, 2, 4, 8,-1,-1,-1,-2
		1351	};
		1352
		1353	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1354	U8 m = *p & MINOR_MASK;
		1355	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1356	I8 ilen = incr_len[m];
		1357
		1358	self->incr_need = self->incr_pos + 1;
		1359
		1360	if (ecb_expect_false (ilen < 0))
		1361	{
		1362	if (m != MINOR_INDEF)
		1363	return 1; // error
		1364
		1365	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1366	{
		1367	if (count >= 0)
		1368	return 1; // error
		1369
		1370	count = 1;
		1371	}
		1372	else
		1373	{
		1374	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1375	count = -1;
		1376	}
		1377	}
		1378	else
		1379	{
		1380	self->incr_need += ilen;
		1381	if (ecb_expect_false (self->incr_need > cur))
		1382	return 0;
		1383
		1384	int major = *p >> MAJOR_SHIFT;
		1385
		1386	switch (major)
		1387	{
		1388	case MAJOR_TAG >> MAJOR_SHIFT:
		1389	++count; // tags merely prefix another value
		1390	break;
		1391
		1392	case MAJOR_BYTES >> MAJOR_SHIFT:
		1393	case MAJOR_TEXT >> MAJOR_SHIFT:
		1394	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1395	case MAJOR_MAP >> MAJOR_SHIFT:
		1396	{
		1397	UV len;
		1398
		1399	if (ecb_expect_false (ilen))
		1400	{
		1401	len = 0;
		1402
		1403	do {
		1404	len = (len << 8) | *++p;
		1405	} while (--ilen);
		1406	}
		1407	else
		1408	len = m;
		1409
		1410	switch (major)
		1411	{
		1412	case MAJOR_BYTES >> MAJOR_SHIFT:
		1413	case MAJOR_TEXT >> MAJOR_SHIFT:
		1414	self->incr_need += len;
		1415	if (ecb_expect_false (self->incr_need > cur))
		1416	return 0;
		1417
		1418	break;
		1419
		1420	case MAJOR_MAP >> MAJOR_SHIFT:
		1421	len <<= 1;
		1422	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1423	if (len)
		1424	{
		1425	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1426	count = len + 1;
		1427	}
		1428	break;
		1429	}
		1430	}
		1431	}
		1432	}
		1433
		1434	self->incr_pos = self->incr_need;
		1435
		1436	if (count > 0)
		1437	{
		1438	while (!--count)
		1439	{
		1440	if (!AvFILLp (self->incr_count))
		1441	return 1; // done
		1442
		1443	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1444	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1445	}
		1446
		1447	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1448	}
		1449	}
		1450
		1451	return 0;
		1452	}
		1453
		1454
835	/////////////////////////////////////////////////////////////////////////////	1455	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1456	// XS interface functions
837		1457
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1458	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1459
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1466	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1467
848	types_true = get_bool ("Types::Serialiser::true" );	1468	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1469	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	1470	types_error = get_bool ("Types::Serialiser::error");
		1471
		1472	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1473
		1474	sv_cbor = newSVpv ("CBOR", 0);
		1475	SvREADONLY_on (sv_cbor);
		1476
		1477	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
851	}	1478	}
852		1479
853	PROTOTYPES: DISABLE	1480	PROTOTYPES: DISABLE
854		1481
855	void CLONE (...)	1482	void CLONE (...)
…		…
873		1500
874	void shrink (CBOR *self, int enable = 1)	1501	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1502	ALIAS:
876	shrink = F_SHRINK	1503	shrink = F_SHRINK
877	allow_unknown = F_ALLOW_UNKNOWN	1504	allow_unknown = F_ALLOW_UNKNOWN
		1505	allow_sharing = F_ALLOW_SHARING
		1506	allow_cycles = F_ALLOW_CYCLES
		1507	pack_strings = F_PACK_STRINGS
		1508	text_keys = F_TEXT_KEYS
		1509	text_strings = F_TEXT_STRINGS
		1510	validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1511	PPCODE:
879	{	1512	{
880	if (enable)	1513	if (enable)
881	self->flags |= ix;	1514	self->flags |= ix;
882	else	1515	else
…		…
887		1520
888	void get_shrink (CBOR *self)	1521	void get_shrink (CBOR *self)
889	ALIAS:	1522	ALIAS:
890	get_shrink = F_SHRINK	1523	get_shrink = F_SHRINK
891	get_allow_unknown = F_ALLOW_UNKNOWN	1524	get_allow_unknown = F_ALLOW_UNKNOWN
		1525	get_allow_sharing = F_ALLOW_SHARING
		1526	get_allow_cycles = F_ALLOW_CYCLES
		1527	get_pack_strings = F_PACK_STRINGS
		1528	get_text_keys = F_TEXT_KEYS
		1529	get_text_strings = F_TEXT_STRINGS
		1530	get_validate_utf8 = F_VALIDATE_UTF8
892	PPCODE:	1531	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1532	XPUSHs (boolSV (self->flags & ix));
894		1533
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1534	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1535	PPCODE:
…		…
912	CODE:	1551	CODE:
913	RETVAL = self->max_size;	1552	RETVAL = self->max_size;
914	OUTPUT:	1553	OUTPUT:
915	RETVAL	1554	RETVAL
916		1555
917	#if 0 //TODO	1556	void filter (CBOR *self, SV *filter = 0)
918
919	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
920	PPCODE:	1557	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1558	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1559	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1560	XPUSHs (ST (0));
926	}
927		1561
928	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1562	SV *get_filter (CBOR *self)
929	PPCODE:	1563	CODE:
930	{	1564	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1565	OUTPUT:
932	self->cb_sk_object = newHV ();	1566	RETVAL
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1567
952	void encode (CBOR *self, SV *scalar)	1568	void encode (CBOR *self, SV *scalar)
953	PPCODE:	1569	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1570	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1571	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1584	EXTEND (SP, 2);
969	PUSHs (sv);	1585	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1586	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1587	}
972		1588
973	#if 0	1589	void incr_parse (CBOR *self, SV *cborstr)
		1590	ALIAS:
		1591	incr_parse_multiple = 1
		1592	PPCODE:
		1593	{
		1594	if (SvUTF8 (cborstr))
		1595	sv_utf8_downgrade (cborstr, 0);
		1596
		1597	if (!self->incr_count)
		1598	{
		1599	self->incr_count = newAV ();
		1600	self->incr_pos = 0;
		1601	self->incr_need = 1;
		1602
		1603	av_push (self->incr_count, newSViv (1));
		1604	}
		1605
		1606	do
		1607	{
		1608	if (!incr_parse (self, cborstr))
		1609	{
		1610	if (self->incr_need > self->max_size && self->max_size)
		1611	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1612	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1613
		1614	break;
		1615	}
		1616
		1617	SV *sv;
		1618	char *offset;
		1619
		1620	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1621	XPUSHs (sv);
		1622
		1623	sv_chop (cborstr, offset);
		1624
		1625	av_clear (self->incr_count);
		1626	av_push (self->incr_count, newSViv (1));
		1627
		1628	self->incr_pos = 0;
		1629	self->incr_need = self->incr_pos + 1;
		1630	}
		1631	while (ix);
		1632	}
		1633
		1634	void incr_reset (CBOR *self)
		1635	CODE:
		1636	{
		1637	SvREFCNT_dec (self->incr_count);
		1638	self->incr_count = 0;
		1639	}
974		1640
975	void DESTROY (CBOR *self)	1641	void DESTROY (CBOR *self)
976	CODE:	1642	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1643	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1644
982	PROTOTYPES: ENABLE	1645	PROTOTYPES: ENABLE
983		1646
984	void encode_cbor (SV *scalar)	1647	void encode_cbor (SV *scalar)
		1648	ALIAS:
		1649	encode_cbor = 0
		1650	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1651	PPCODE:
986	{	1652	{
987	CBOR cbor;	1653	CBOR cbor;
988	cbor_init (&cbor);	1654	cbor_init (&cbor);
		1655	cbor.flags |= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1656	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1657	XPUSHs (scalar);
991	}	1658	}
992		1659
993	void decode_cbor (SV *cborstr)	1660	void decode_cbor (SV *cborstr)

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