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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.3 by root, Sat Oct 26 11:08:34 2013 UTC vs.
Revision 1.40 by root, Tue Dec 10 13:54:40 2013 UTC

…		…
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
12	#include "ecb.h"	12	#include "ecb.h"
13		13
		14	// compatibility with perl <5.18
		15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		17	#endif
		18	#ifndef HvNAMELEN
		19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		20	#endif
		21	#ifndef HvNAMEUTF8
		22	# define HvNAMEUTF8(hv) 0
		23	#endif
		24	#ifndef SvREFCNT_dec_NN
		25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		26	#endif
		27
		28	// known major and minor types
		29	enum cbor_type
		30	{
		31	MAJOR_SHIFT = 5,
		32	MINOR_MASK = 0x1f,
		33
		34	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		35	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		36	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		37	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		38	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		39	MAJOR_MAP = 5 << MAJOR_SHIFT,
		40	MAJOR_TAG = 6 << MAJOR_SHIFT,
		41	MAJOR_MISC = 7 << MAJOR_SHIFT,
		42
		43	// INT/STRING/ARRAY/MAP subtypes
		44	LENGTH_EXT1 = 24,
		45	LENGTH_EXT2 = 25,
		46	LENGTH_EXT4 = 26,
		47	LENGTH_EXT8 = 27,
		48
		49	// SIMPLE types (effectively MISC subtypes)
		50	SIMPLE_FALSE = 20,
		51	SIMPLE_TRUE = 21,
		52	SIMPLE_NULL = 22,
		53	SIMPLE_UNDEF = 23,
		54
		55	// MISC subtype (unused)
		56	MISC_EXT1 = 24,
		57	MISC_FLOAT16 = 25,
		58	MISC_FLOAT32 = 26,
		59	MISC_FLOAT64 = 27,
		60
		61	// BYTES/TEXT/ARRAY/MAP
		62	MINOR_INDEF = 31,
		63	};
		64
		65	// known tags
		66	enum cbor_tag
		67	{
		68	// extensions
		69	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		70	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		71	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		72	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		73	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		76
		77	// rfc7049
		78	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		79	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		80	CBOR_TAG_POS_BIGNUM = 2, // byte string
		81	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		82	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		83	CBOR_TAG_BIGFLOAT = 5, // array
		84
		85	CBOR_TAG_CONV_B64U = 21, // base64url, any
		86	CBOR_TAG_CONV_B64 = 22, // base64, any
		87	CBOR_TAG_CONV_HEX = 23, // base16, any
		88	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		89
		90	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		91	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		92	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		93	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		94	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		95
		96	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		97	};
		98
14	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	100	#define F_ALLOW_UNKNOWN 0x00000002UL
		101	#define F_ALLOW_SHARING 0x00000004UL
		102	#define F_ALLOW_CYCLES 0x00000008UL
		103	#define F_PACK_STRINGS 0x00000010UL
		104	#define F_VALIDATE_UTF8 0x00000020UL
16		105
17	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
18		107
19	#define SB do {	108	#define SB do {
20	#define SE } while (0)	109	#define SE } while (0)
21
22	#if __GNUC__ >= 3
23	# define expect(expr,value) __builtin_expect ((expr), (value))
24	# define INLINE static inline
25	#else
26	# define expect(expr,value) (expr)
27	# define INLINE static
28	#endif
29
30	#define expect_false(expr) expect ((expr) != 0, 0)
31	#define expect_true(expr) expect ((expr) != 0, 1)
32		110
33	#define IN_RANGE_INC(type,val,beg,end) \	111	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	112	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	113	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		114
…		…
42	#else	120	#else
43	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
45	#endif	123	#endif
46		124
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	125	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	126	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		127
50	typedef struct {	128	typedef struct {
51	U32 flags;	129	U32 flags;
52	U32 max_depth;	130	U32 max_depth;
53	STRLEN max_size;	131	STRLEN max_size;
		132	SV *filter;
54		133
55	SV *cb_object;	134	// for the incremental parser
56	HV *cb_sk_object;	135	STRLEN incr_pos; // the current offset into the text
		136	STRLEN incr_need; // minimum bytes needed to decode
		137	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	138	} CBOR;
58		139
59	INLINE void	140	ecb_inline void
60	cbor_init (CBOR *cbor)	141	cbor_init (CBOR *cbor)
61	{	142	{
62	Zero (cbor, 1, CBOR);	143	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	144	cbor->max_depth = 512;
64	}	145	}
65		146
		147	ecb_inline void
		148	cbor_free (CBOR *cbor)
		149	{
		150	SvREFCNT_dec (cbor->filter);
		151	SvREFCNT_dec (cbor->incr_count);
		152	}
		153
66	/////////////////////////////////////////////////////////////////////////////	154	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	155	// utility functions
68		156
69	INLINE SV *	157	ecb_inline SV *
70	get_bool (const char *name)	158	get_bool (const char *name)
71	{	159	{
72	SV *sv = get_sv (name, 1);	160	SV *sv = get_sv (name, 1);
73		161
74	SvREADONLY_on (sv);	162	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	163	SvREADONLY_on (SvRV (sv));
76		164
77	return sv;	165	return sv;
78	}	166	}
79		167
80	INLINE void	168	ecb_inline void
81	shrink (SV *sv)	169	shrink (SV *sv)
82	{	170	{
83	sv_utf8_downgrade (sv, 1);	171	sv_utf8_downgrade (sv, 1);
84		172
85	if (SvLEN (sv) > SvCUR (sv) + 1)	173	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	178	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	179	#endif
92	}	180	}
93	}	181	}
94		182
95	/////////////////////////////////////////////////////////////////////////////	183	// minimum length of a string to be registered for stringref
96	// fp hell	184	ecb_inline int
97		185	minimum_string_length (UV idx)
98	//TODO	186	{
		187	return idx > 23
		188	? idx > 0xffU
		189	? idx > 0xffffU
		190	? idx > 0xffffffffU
		191	? 11
		192	: 7
		193	: 5
		194	: 4
		195	: 3;
		196	}
99		197
100	/////////////////////////////////////////////////////////////////////////////	198	/////////////////////////////////////////////////////////////////////////////
101	// encoder	199	// encoder
102		200
103	// structure used for encoding CBOR	201	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	204	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	205	char *end; // SvEND (sv)
108	SV *sv; // result scalar	206	SV *sv; // result scalar
109	CBOR cbor;	207	CBOR cbor;
110	U32 depth; // recursion level	208	U32 depth; // recursion level
		209	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		210	UV stringref_idx;
		211	HV *shareable; // ptr => index, or 0
		212	UV shareable_idx;
111	} enc_t;	213	} enc_t;
112		214
113	INLINE void	215	ecb_inline void
114	need (enc_t *enc, STRLEN len)	216	need (enc_t *enc, STRLEN len)
115	{	217	{
116	if (expect_false (enc->cur + len >= enc->end))	218	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	219	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	220	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	221	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	222	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	223	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	224	}
123	}	225	}
124		226
125	INLINE void	227	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	228	encode_ch (enc_t *enc, char ch)
127	{	229	{
128	need (enc, 1);	230	need (enc, 1);
129	*enc->cur++ = ch;	231	*enc->cur++ = ch;
130	}	232	}
…		…
132	static void	234	static void
133	encode_uint (enc_t *enc, int major, UV len)	235	encode_uint (enc_t *enc, int major, UV len)
134	{	236	{
135	need (enc, 9);	237	need (enc, 9);
136		238
137	if (len < 24)	239	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	240	*enc->cur++ = major | len;
139	else if (len < 0x100)	241	else if (ecb_expect_true (len <= 0xffU))
140	{	242	{
141	*enc->cur++ = major | 24;	243	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	244	*enc->cur++ = len;
143	}	245	}
144	else if (len < 0x10000)	246	else if (len <= 0xffffU)
145	{	247	{
146	*enc->cur++ = major | 25;	248	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	249	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	250	*enc->cur++ = len;
149	}	251	}
150	else if (len < 0x100000000)	252	else if (len <= 0xffffffffU)
151	{	253	{
152	*enc->cur++ = major | 26;	254	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	255	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	256	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	257	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	258	*enc->cur++ = len;
157	}	259	}
158	else if (len)	260	else
159	{	261	{
160	*enc->cur++ = major | 27;	262	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	263	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	264	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	265	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	266	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	267	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	269	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	270	*enc->cur++ = len;
169	}	271	}
170	}	272	}
171		273
172	static void	274	ecb_inline void
		275	encode_tag (enc_t *enc, UV tag)
		276	{
		277	encode_uint (enc, MAJOR_TAG, tag);
		278	}
		279
		280	ecb_inline void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	281	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	282	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	283	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	284	need (enc, len);
177	memcpy (enc->cur, str, len);	285	memcpy (enc->cur, str, len);
178	enc->cur += len;	286	enc->cur += len;
179	}	287	}
180		288
		289	static void
		290	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		291	{
		292	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		293	{
		294	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		295
		296	if (SvOK (*svp))
		297	{
		298	// already registered, use stringref
		299	encode_tag (enc, CBOR_TAG_STRINGREF);
		300	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		301	return;
		302	}
		303	else if (len >= minimum_string_length (enc->stringref_idx))
		304	{
		305	// register only
		306	sv_setuv (*svp, enc->stringref_idx);
		307	++enc->stringref_idx;
		308	}
		309	}
		310
		311	encode_str (enc, utf8, str, len);
		312	}
		313
181	static void encode_sv (enc_t *enc, SV *sv);	314	static void encode_sv (enc_t *enc, SV *sv);
182		315
183	static void	316	static void
184	encode_av (enc_t *enc, AV *av)	317	encode_av (enc_t *enc, AV *av)
185	{	318	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	321	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	322	croak (ERR_NESTING_EXCEEDED);
190		323
191	++enc->depth;	324	++enc->depth;
192		325
193	encode_uint (enc, 0x80, len + 1);	326	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		327
195	for (i = 0; i <= len; ++i)	328	for (i = 0; i <= len; ++i)
196	{	329	{
197	SV **svp = av_fetch (av, i, 0);	330	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	331	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
213		346
214	int pairs = hv_iterinit (hv);	347	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	348	int mg = SvMAGICAL (hv);
216		349
217	if (mg)	350	if (mg)
218	encode_ch (enc, 0xa0 | 31);	351	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	352	else
220	encode_uint (enc, 0xa0, pairs);	353	encode_uint (enc, MAJOR_MAP, pairs);
221		354
222	while ((he = hv_iternext (hv)))	355	while ((he = hv_iternext (hv)))
223	{	356	{
224	if (HeKLEN (he) == HEf_SVKEY)	357	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	358	encode_sv (enc, HeSVKEY (he));
226	else	359	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	360	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		361
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	362	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	363	}
231		364
232	if (mg)	365	if (mg)
233	encode_ch (enc, 0xe0 | 31);	366	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		367
235	--enc->depth;	368	--enc->depth;
236	}	369	}
237		370
238	// encode objects, arrays and special \0=false and \1=true values.	371	// encode objects, arrays and special \0=false and \1=true values.
239	static void	372	static void
240	encode_rv (enc_t *enc, SV *sv)	373	encode_rv (enc_t *enc, SV *sv)
241	{	374	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	375	SvGETMAGIC (sv);
		376
245	svt = SvTYPE (sv);	377	svtype svt = SvTYPE (sv);
246		378
247	if (expect_false (SvOBJECT (sv)))	379	if (ecb_expect_false (SvOBJECT (sv)))
248	{	380	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	381	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	382	? types_boolean_stash
		383	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		384	HV *error_stash = !CBOR_SLOW || types_error_stash
		385	? types_error_stash
		386	: gv_stashpv ("Types::Serialiser::Error", 1);
		387	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		388	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	389	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		390
253	if (SvSTASH (sv) == stash)	391	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	392
		393	if (stash == boolean_stash)
		394	{
		395	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		396	return;
		397	}
		398	else if (stash == error_stash)
		399	{
		400	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		401	return;
		402	}
		403	else if (stash == tagged_stash)
		404	{
		405	if (svt != SVt_PVAV)
		406	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		407
		408	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		409	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		410
		411	return;
		412	}
		413	}
		414
		415	if (ecb_expect_false (SvREFCNT (sv) > 1)
		416	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		417	{
		418	if (!enc->shareable)
		419	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		420
		421	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		422
		423	if (SvOK (*svp))
		424	{
		425	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		426	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		427	return;
		428	}
255	else	429	else
256	{	430	{
257	#if 0 //TODO	431	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	432	++enc->shareable_idx;
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvOBJECT (sv)))
		438	{
		439	HV *stash = SvSTASH (sv);
		440	GV *method;
		441
		442	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	443	{
		444	dSP;
		445
		446	ENTER; SAVETMPS; PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	447	// we re-bless the reference to get overload and other niceties right
261	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
262
263	if (to_cbor)
264	{
265	dSP;
266
267	ENTER; SAVETMPS; PUSHMARK (SP);
268	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	448	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		449
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	450	PUTBACK;
		451	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	452	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	453	SPAGAIN;
274		454
275	// catch this surprisingly common error	455	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	456	if (SvROK (TOPs) && SvRV (TOPs) == sv)
277	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	457	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		458
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	459	encode_sv (enc, POPs);
283		460
		461	PUTBACK;
		462
284	FREETMPS; LEAVE;	463	FREETMPS; LEAVE;
285	}
286	else if (enc->cbor.flags & F_ALLOW_BLESSED)
287	encode_str (enc, "null", 4, 0);
288	else
289	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
290	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
291	}	464	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	465	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	466	{
		467	dSP;
		468
		469	ENTER; SAVETMPS; PUSHMARK (SP);
		470	EXTEND (SP, 2);
		471	// we re-bless the reference to get overload and other niceties right
		472	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		473	PUSHs (sv_cbor);
		474
		475	PUTBACK;
		476	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		477	SPAGAIN;
		478
		479	// catch this surprisingly common error
		480	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		481	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		482
		483	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		484	encode_uint (enc, MAJOR_ARRAY, count + 1);
		485	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		486
		487	while (count)
		488	encode_sv (enc, SP[1 - count--]);
		489
		490	PUTBACK;
		491
		492	FREETMPS; LEAVE;
		493	}
294	else	494	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	495	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	496	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	497	}
300	else if (svt == SVt_PVHV)	498	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	499	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	500	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	501	encode_av (enc, (AV *)sv);
304	else if (svt < SVt_PVAV)
305	{
306	STRLEN len = 0;
307	char *pv = svt ? SvPV (sv, len) : 0;
308
309	if (len == 1 && *pv == '1')
310	encode_ch (enc, 0xe0 | 21);
311	else if (len == 1 && *pv == '0')
312	encode_ch (enc, 0xe0 | 20);
313	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
314	encode_ch (enc, 0xe0 | 23);
315	else
316	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
317	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
318	}
319	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
320	encode_ch (enc, 0xe0 | 23);
321	else	502	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	503	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	encode_tag (enc, CBOR_TAG_INDIRECTION);
		505	encode_sv (enc, sv);
		506	}
324	}	507	}
325		508
326	static void	509	static void
327	encode_nv (enc_t *enc, SV *sv)	510	encode_nv (enc_t *enc, SV *sv)
328	{	511	{
329	double nv = SvNVX (sv);	512	double nv = SvNVX (sv);
330		513
331	need (enc, 9);	514	need (enc, 9);
332		515
333	if (expect_false (nv == (U32)nv))	516	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	517	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	518	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	519	else if (ecb_expect_false (nv == (float)nv))
337	{	520	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	521	uint32_t fp = ecb_float_to_binary32 (nv);
339		522
340	*enc->cur++ = 0xe0 | 26;	523	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		524
342	if (!ecb_big_endian ())	525	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	526	fp = ecb_bswap32 (fp);
344		527
345	memcpy (enc->cur, &fp, 4);	528	memcpy (enc->cur, &fp, 4);
…		…
347	}	530	}
348	else	531	else
349	{	532	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	533	uint64_t fp = ecb_double_to_binary64 (nv);
351		534
352	*enc->cur++ = 0xe0 | 27;	535	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		536
354	if (!ecb_big_endian ())	537	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	538	fp = ecb_bswap64 (fp);
356		539
357	memcpy (enc->cur, &fp, 8);	540	memcpy (enc->cur, &fp, 8);
…		…
366		549
367	if (SvPOKp (sv))	550	if (SvPOKp (sv))
368	{	551	{
369	STRLEN len;	552	STRLEN len;
370	char *str = SvPV (sv, len);	553	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	554	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	555	}
373	else if (SvNOKp (sv))	556	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	557	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	558	else if (SvIOKp (sv))
376	{	559	{
377	if (SvIsUV (sv))	560	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	561	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	562	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	563	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	564	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	565	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	566	}
384	else if (SvROK (sv))	567	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	568	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	569	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	570	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	571	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	572	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	573	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	574	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	575	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	576	}
394		577
395	static SV *	578	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	579	encode_cbor (SV *scalar, CBOR *cbor)
397	{	580	{
398	enc_t enc;	581	enc_t enc = { };
399		582
400	enc.cbor = *cbor;	583	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	584	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	585	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	586	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		587
406	SvPOK_only (enc.sv);	588	SvPOK_only (enc.sv);
		589
		590	if (cbor->flags & F_PACK_STRINGS)
		591	{
		592	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		593	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		594	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		595	}
		596
407	encode_sv (&enc, scalar);	597	encode_sv (&enc, scalar);
408		598
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	599	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	600	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		601
…		…
425	U8 *end; // end of input string	615	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	616	const char *err; // parse error, if != 0
427	CBOR cbor;	617	CBOR cbor;
428	U32 depth; // recursion depth	618	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	619	U32 maxdepth; // recursion depth limit
		620	AV *shareable;
		621	AV *stringref;
		622	SV *decode_tagged;
430	} dec_t;	623	} dec_t;
431		624
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	625	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		626
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	627	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		628
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	629	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	630	#define DEC_DEC_DEPTH --dec->depth
438		631
439	static UV	632	static UV
440	decode_uint (dec_t *dec)	633	decode_uint (dec_t *dec)
441	{	634	{
442	switch (*dec->cur & 31)	635	U8 m = *dec->cur & MINOR_MASK;
443	{	636	++dec->cur;
444	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
445	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
446	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
447	return *dec->cur++ & 31;
448		637
449	case 24:	638	if (ecb_expect_true (m < LENGTH_EXT1))
		639	return m;
		640	else if (ecb_expect_true (m == LENGTH_EXT1))
		641	{
450	WANT (2);	642	WANT (1);
451	dec->cur += 2;	643	dec->cur += 1;
452	return dec->cur[-1];	644	return dec->cur[-1];
453		645	}
454	case 25:	646	else if (ecb_expect_true (m == LENGTH_EXT2))
		647	{
455	WANT (3);	648	WANT (2);
456	dec->cur += 3;	649	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	650	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	651	| ((UV)dec->cur[-1]);
459		652	}
460	case 26:	653	else if (ecb_expect_true (m == LENGTH_EXT4))
		654	{
461	WANT (5);	655	WANT (4);
462	dec->cur += 5;	656	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	657	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	658	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	659	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	660	| ((UV)dec->cur[-1]);
467		661	}
468	case 27:	662	else if (ecb_expect_true (m == LENGTH_EXT8))
		663	{
469	WANT (9);	664	WANT (8);
470	dec->cur += 9;	665	dec->cur += 8;
		666
		667	return
		668	#if UVSIZE < 8
		669	0
		670	#else
471	return (((UV)dec->cur[-8]) << 56)	671	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	672	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	673	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	674	| (((UV)dec->cur[-5]) << 32)
		675	#endif
475	| (((UV)dec->cur[-4]) << 24)	676	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	677	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	678	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	679	| ((UV)dec->cur[-1]);
479		680	}
480	default:	681	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	682	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		683
484	fail:	684	fail:
485	return 0;	685	return 0;
486	}	686	}
487		687
…		…
492	{	692	{
493	AV *av = newAV ();	693	AV *av = newAV ();
494		694
495	DEC_INC_DEPTH;	695	DEC_INC_DEPTH;
496		696
497	if ((*dec->cur & 31) == 31)	697	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	698	{
499	++dec->cur;	699	++dec->cur;
500		700
501	for (;;)	701	for (;;)
502	{	702	{
503	WANT (1);	703	WANT (1);
504		704
505	if (*dec->cur == (0xe0 | 31))	705	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	706	{
507	++dec->cur;	707	++dec->cur;
508	break;	708	break;
509	}	709	}
510		710
…		…
513	}	713	}
514	else	714	else
515	{	715	{
516	int i, len = decode_uint (dec);	716	int i, len = decode_uint (dec);
517		717
		718	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
518	av_fill (av, len - 1);	719	av_fill (av, len - 1);
519		720
520	for (i = 0; i < len; ++i)	721	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	722	AvARRAY (av)[i] = decode_sv (dec);
522	}	723	}
…		…
528	SvREFCNT_dec (av);	729	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	730	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	731	return &PL_sv_undef;
531	}	732	}
532		733
		734	static void
		735	decode_he (dec_t *dec, HV *hv)
		736	{
		737	// for speed reasons, we specialcase single-string
		738	// byte or utf-8 strings as keys, but only when !stringref
		739
		740	if (ecb_expect_true (!dec->stringref))
		741	if (ecb_expect_true ((*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		742	{
		743	I32 len = decode_uint (dec);
		744	char *key = (char *)dec->cur;
		745
		746	dec->cur += len;
		747
		748	hv_store (hv, key, len, decode_sv (dec), 0);
		749
		750	return;
		751	}
		752	else if (ecb_expect_true ((*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		753	{
		754	I32 len = decode_uint (dec);
		755	char *key = (char *)dec->cur;
		756
		757	dec->cur += len;
		758
		759	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		760	if (!is_utf8_string (key, len))
		761	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		762
		763	hv_store (hv, key, -len, decode_sv (dec), 0);
		764
		765	return;
		766	}
		767
		768	SV *k = decode_sv (dec);
		769	SV *v = decode_sv (dec);
		770
		771	hv_store_ent (hv, k, v, 0);
		772	SvREFCNT_dec (k);
		773
		774	fail:
		775	;
		776	}
		777
533	static SV *	778	static SV *
534	decode_hv (dec_t *dec)	779	decode_hv (dec_t *dec)
535	{	780	{
536	HV *hv = newHV ();	781	HV *hv = newHV ();
537		782
538	DEC_INC_DEPTH;	783	DEC_INC_DEPTH;
539		784
540	if ((*dec->cur & 31) == 31)	785	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	786	{
542	++dec->cur;	787	++dec->cur;
543		788
544	for (;;)	789	for (;;)
545	{	790	{
546	WANT (1);	791	WANT (1);
547		792
548	if (*dec->cur == (0xe0 | 31))	793	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	794	{
550	++dec->cur;	795	++dec->cur;
551	break;	796	break;
552	}	797	}
553		798
554	SV *k = decode_sv (dec);	799	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	800	}
559	}	801	}
560	else	802	else
561	{	803	{
562	int len = decode_uint (dec);	804	int pairs = decode_uint (dec);
563		805
564	while (len--)	806	while (pairs--)
565	{	807	decode_he (dec, hv);
566	SV *k = decode_sv (dec);
567	SV *v = decode_sv (dec);
568
569	hv_store_ent (hv, k, v, 0);
570	}
571	}	808	}
572		809
573	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	811	return newRV_noinc ((SV *)hv);
575
576	#if 0
577	SV *sv;
578	HV *hv = newHV ();
579
580	DEC_INC_DEPTH;
581	decode_ws (dec);
582
583	for (;;)
584	{
585	// heuristic: assume that
586	// a) decode_str + hv_store_ent are abysmally slow.
587	// b) most hash keys are short, simple ascii text.
588	// => try to "fast-match" such strings to avoid
589	// the overhead of decode_str + hv_store_ent.
590	{
591	SV *value;
592	char *p = dec->cur;
593	char *e = p + 24; // only try up to 24 bytes
594
595	for (;;)
596	{
597	// the >= 0x80 is false on most architectures
598	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
599	{
600	// slow path, back up and use decode_str
601	SV *key = decode_str (dec);
602	if (!key)
603	goto fail;
604
605	decode_ws (dec); EXPECT_CH (':');
606
607	decode_ws (dec);
608	value = decode_sv (dec);
609	if (!value)
610	{
611	SvREFCNT_dec (key);
612	goto fail;
613	}
614
615	hv_store_ent (hv, key, value, 0);
616	SvREFCNT_dec (key);
617
618	break;
619	}
620	else if (*p == '"')
621	{
622	// fast path, got a simple key
623	char *key = dec->cur;
624	int len = p - key;
625	dec->cur = p + 1;
626
627	decode_ws (dec); EXPECT_CH (':');
628
629	decode_ws (dec);
630	value = decode_sv (dec);
631	if (!value)
632	goto fail;
633
634	hv_store (hv, key, len, value, 0);
635
636	break;
637	}
638
639	++p;
640	}
641	}
642
643	decode_ws (dec);
644
645	if (*dec->cur == '}')
646	{
647	++dec->cur;
648	break;
649	}
650
651	if (*dec->cur != ',')
652	ERR (", or } expected while parsing object/hash");
653
654	++dec->cur;
655
656	decode_ws (dec);
657
658	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
659	{
660	++dec->cur;
661	break;
662	}
663	}
664
665	DEC_DEC_DEPTH;
666	sv = newRV_noinc ((SV *)hv);
667
668	// check filter callbacks
669	if (dec->cbor.flags & F_HOOK)
670	{
671	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
672	{
673	HE *cb, *he;
674
675	hv_iterinit (hv);
676	he = hv_iternext (hv);
677	hv_iterinit (hv);
678
679	// the next line creates a mortal sv each time its called.
680	// might want to optimise this for common cases.
681	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
682
683	if (cb)
684	{
685	dSP;
686	int count;
687
688	ENTER; SAVETMPS; PUSHMARK (SP);
689	XPUSHs (HeVAL (he));
690	sv_2mortal (sv);
691
692	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
693
694	if (count == 1)
695	{
696	sv = newSVsv (POPs);
697	FREETMPS; LEAVE;
698	return sv;
699	}
700
701	SvREFCNT_inc (sv);
702	FREETMPS; LEAVE;
703	}
704	}
705
706	if (dec->cbor.cb_object)
707	{
708	dSP;
709	int count;
710
711	ENTER; SAVETMPS; PUSHMARK (SP);
712	XPUSHs (sv_2mortal (sv));
713
714	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
715
716	if (count == 1)
717	{
718	sv = newSVsv (POPs);
719	FREETMPS; LEAVE;
720	return sv;
721	}
722
723	SvREFCNT_inc (sv);
724	FREETMPS; LEAVE;
725	}
726	}
727
728	return sv;
729	#endif
730		812
731	fail:	813	fail:
732	SvREFCNT_dec (hv);	814	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	816	return &PL_sv_undef;
735	}	817	}
736		818
737	static SV *	819	static SV *
738	decode_str (dec_t *dec, int utf8)	820	decode_str (dec_t *dec, int utf8)
739	{	821	{
740	SV *sv;	822	SV *sv = 0;
741		823
742	if ((*dec->cur & 31) == 31)	824	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	825	{
		826	// indefinite length strings
744	++dec->cur;	827	++dec->cur;
745		828
		829	U8 major = *dec->cur & MAJOR_MISC;
		830
746	sv = newSVpvn ("", 0);	831	sv = newSVpvn ("", 0);
747		832
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	833	for (;;)
750	{	834	{
751	WANT (1);	835	WANT (1);
752		836
753	if (*dec->cur == (0xe0 | 31))	837	if ((*dec->cur - major) > LENGTH_EXT8)
		838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	839	{
755	++dec->cur;	840	++dec->cur;
756	break;	841	break;
757	}	842	}
		843	else
		844	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		845
759	SV *sv2 = decode_sv (dec);	846	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	847
		848	WANT (len);
		849	sv_catpvn (sv, dec->cur, len);
		850	dec->cur += len;
761	}	851	}
762	}	852	}
763	else	853	else
764	{	854	{
765	STRLEN len = decode_uint (dec);	855	STRLEN len = decode_uint (dec);
766		856
767	WANT (len);	857	WANT (len);
768	sv = newSVpvn (dec->cur, len);	858	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	859	dec->cur += len;
		860
		861	if (ecb_expect_false (dec->stringref)
		862	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		863	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	864	}
771		865
772	if (utf8)	866	if (utf8)
		867	{
		868	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		869	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		870	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		871
773	SvUTF8_on (sv);	872	SvUTF8_on (sv);
		873	}
774		874
775	return sv;	875	return sv;
776		876
777	fail:	877	fail:
		878	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	879	return &PL_sv_undef;
779	}	880	}
780		881
781	static SV *	882	static SV *
782	decode_tagged (dec_t *dec)	883	decode_tagged (dec_t *dec)
783	{	884	{
		885	SV *sv = 0;
784	UV tag = decode_uint (dec);	886	UV tag = decode_uint (dec);
		887
		888	WANT (1);
		889
		890	switch (tag)
		891	{
		892	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	893	sv = decode_sv (dec);
		894	break;
786		895
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	896	case CBOR_TAG_INDIRECTION:
		897	sv = newRV_noinc (decode_sv (dec));
		898	break;
		899
		900	case CBOR_TAG_STRINGREF_NAMESPACE:
		901	{
		902	ENTER; SAVETMPS;
		903
		904	SAVESPTR (dec->stringref);
		905	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		906
		907	sv = decode_sv (dec);
		908
		909	FREETMPS; LEAVE;
		910	}
		911	break;
		912
		913	case CBOR_TAG_STRINGREF:
		914	{
		915	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		916	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		917
		918	UV idx = decode_uint (dec);
		919
		920	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		921	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		922
		923	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		924	}
		925	break;
		926
		927	case CBOR_TAG_VALUE_SHAREABLE:
		928	{
		929	if (ecb_expect_false (!dec->shareable))
		930	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		931
		932	if (dec->cbor.flags & F_ALLOW_CYCLES)
		933	{
		934	sv = newSV (0);
		935	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		936
		937	SV *osv = decode_sv (dec);
		938	sv_setsv (sv, osv);
		939	SvREFCNT_dec_NN (osv);
		940	}
		941	else
		942	{
		943	av_push (dec->shareable, &PL_sv_undef);
		944	int idx = AvFILLp (dec->shareable);
		945	sv = decode_sv (dec);
		946	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		947	}
		948	}
		949	break;
		950
		951	case CBOR_TAG_VALUE_SHAREDREF:
		952	{
		953	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		954	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		955
		956	UV idx = decode_uint (dec);
		957
		958	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		959	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		960
		961	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		962
		963	if (sv == &PL_sv_undef)
		964	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		965	}
		966	break;
		967
		968	case CBOR_TAG_PERL_OBJECT:
		969	{
		970	sv = decode_sv (dec);
		971
		972	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		973	ERR ("corrupted CBOR data (non-array perl object)");
		974
		975	AV *av = (AV *)SvRV (sv);
		976	int len = av_len (av) + 1;
		977	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		978
		979	if (!stash)
		980	ERR ("cannot decode perl-object (package does not exist)");
		981
		982	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		983
		984	if (!method)
		985	ERR ("cannot decode perl-object (package does not have a THAW method)");
		986
		987	dSP;
		988
		989	ENTER; SAVETMPS; PUSHMARK (SP);
		990	EXTEND (SP, len + 1);
		991	// we re-bless the reference to get overload and other niceties right
		992	PUSHs (*av_fetch (av, 0, 1));
		993	PUSHs (sv_cbor);
		994
		995	int i;
		996
		997	for (i = 1; i < len; ++i)
		998	PUSHs (*av_fetch (av, i, 1));
		999
		1000	PUTBACK;
		1001	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1002	SPAGAIN;
		1003
		1004	if (SvTRUE (ERRSV))
		1005	{
		1006	FREETMPS; LEAVE;
		1007	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1008	}
		1009
		1010	SvREFCNT_dec (sv);
		1011	sv = SvREFCNT_inc (POPs);
		1012
		1013	PUTBACK;
		1014
		1015	FREETMPS; LEAVE;
		1016	}
		1017	break;
		1018
		1019	default:
		1020	{
		1021	sv = decode_sv (dec);
		1022
		1023	dSP;
		1024	ENTER; SAVETMPS; PUSHMARK (SP);
		1025	EXTEND (SP, 2);
		1026	PUSHs (newSVuv (tag));
		1027	PUSHs (sv);
		1028
		1029	PUTBACK;
		1030	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1031	SPAGAIN;
		1032
		1033	if (SvTRUE (ERRSV))
		1034	{
		1035	FREETMPS; LEAVE;
		1036	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1037	}
		1038
		1039	if (count)
		1040	{
		1041	SvREFCNT_dec (sv);
		1042	sv = SvREFCNT_inc (POPs);
		1043	}
		1044	else
		1045	{
		1046	AV *av = newAV ();
		1047	av_push (av, newSVuv (tag));
		1048	av_push (av, sv);
		1049
		1050	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1051	? cbor_tagged_stash
		1052	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1053	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1054	}
		1055
		1056	PUTBACK;
		1057
		1058	FREETMPS; LEAVE;
		1059	}
		1060	break;
		1061	}
		1062
788	return sv;	1063	return sv;
789		1064
790	AV *av = newAV ();	1065	fail:
791	av_push (av, newSVuv (tag));	1066	SvREFCNT_dec (sv);
792	av_push (av, sv);	1067	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1068	}
795		1069
796	static SV *	1070	static SV *
797	decode_sv (dec_t *dec)	1071	decode_sv (dec_t *dec)
798	{	1072	{
799	WANT (1);	1073	WANT (1);
800		1074
801	switch (*dec->cur >> 5)	1075	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1076	{
803	case 0: // unsigned int	1077	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1078	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1079	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1080	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1081	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1082	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1083	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1084
811	return decode_str (dec, 1);	1085	case MAJOR_MISC >> MAJOR_SHIFT:
812	case 4: // array
813	return decode_av (dec);
814	case 5: // map
815	return decode_hv (dec);
816	case 6: // tag
817	return decode_tagged (dec);
818	case 7: // misc
819	switch (*dec->cur++ & 31)	1086	switch (*dec->cur++ & MINOR_MASK)
820	{	1087	{
821	case 20:	1088	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1089	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1090	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1091	#endif
825	return newSVsv (cbor_false);	1092	return newSVsv (types_false);
826	case 21:	1093	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1094	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1095	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1096	#endif
830	return newSVsv (cbor_true);	1097	return newSVsv (types_true);
831	case 22:	1098	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1099	return newSVsv (&PL_sv_undef);
		1100	case SIMPLE_UNDEF:
		1101	#if CBOR_SLOW
		1102	types_error = get_bool ("Types::Serialiser::error");
		1103	#endif
		1104	return newSVsv (types_error);
833		1105
834	case 25:	1106	case MISC_FLOAT16:
835	{	1107	{
836	WANT (2);	1108	WANT (2);
837		1109
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1110	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1111	dec->cur += 2;
840		1112
841	return newSVnv (ecb_binary16_to_float (fp));	1113	return newSVnv (ecb_binary16_to_float (fp));
842	}	1114	}
843		1115
844	case 26:	1116	case MISC_FLOAT32:
845	{	1117	{
846	uint32_t fp;	1118	uint32_t fp;
847	WANT (4);	1119	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1120	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1121	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1124	fp = ecb_bswap32 (fp);
853		1125
854	return newSVnv (ecb_binary32_to_float (fp));	1126	return newSVnv (ecb_binary32_to_float (fp));
855	}	1127	}
856		1128
857	case 27:	1129	case MISC_FLOAT64:
858	{	1130	{
859	uint64_t fp;	1131	uint64_t fp;
860	WANT (8);	1132	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1133	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1134	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1137	fp = ecb_bswap64 (fp);
866		1138
867	return newSVnv (ecb_binary64_to_double (fp));	1139	return newSVnv (ecb_binary64_to_double (fp));
868	}	1140	}
869		1141
870	// 0..19 unassigned	1142	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1143	// 24 reserved + unassigned simple (reserved values are not encodable)
		1144	// 28-30 unassigned misc
		1145	// 31 break code
872	default:	1146	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1147	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1148	}
875		1149
876	break;	1150	break;
877	}	1151	}
878	#if 0
879	switch (*dec->cur)
880	{
881	//case '"': ++dec->cur; return decode_str (dec);
882	case '[': ++dec->cur; return decode_av (dec);
883	case '{': ++dec->cur; return decode_hv (dec);
884
885	case '-':
886	case '0': case '1': case '2': case '3': case '4':
887	case '5': case '6': case '7': case '8': case '9':
888	//TODO return decode_num (dec);
889
890	case 't':
891	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
892	{
893	dec->cur += 4;
894	#if CBOR_SLOW
895	cbor_true = get_bool ("CBOR::XS::true");
896	#endif
897	return newSVsv (cbor_true);
898	}
899	else
900	ERR ("'true' expected");
901
902	break;
903
904	case 'f':
905	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
906	{
907	dec->cur += 5;
908	#if CBOR_SLOW
909	cbor_false = get_bool ("CBOR::XS::false");
910	#endif
911	return newSVsv (cbor_false);
912	}
913	else
914	ERR ("'false' expected");
915
916	break;
917
918	case 'n':
919	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
920	{
921	dec->cur += 4;
922	return newSVsv (&PL_sv_undef);
923	}
924	else
925	ERR ("'null' expected");
926
927	break;
928
929	default:
930	ERR ("malformed CBOR string, neither array, object, number, string or atom");
931	break;
932	}
933	#endif
934		1152
935	fail:	1153	fail:
936	return &PL_sv_undef;	1154	return &PL_sv_undef;
937	}	1155	}
938		1156
939	static SV *	1157	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1158	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1159	{
942	dec_t dec;	1160	dec_t dec = { };
943	SV *sv;	1161	SV *sv;
		1162	STRLEN len;
		1163	char *data = SvPVbyte (string, len);
944		1164
945	/* work around bugs in 5.10 where manipulating magic values
946	* makes perl ignore the magic in subsequent accesses.
947	* also make a copy of non-PV values, to get them into a clean
948	* state (SvPV should do that, but it's buggy, see below).
949	*/
950	/*SvGETMAGIC (string);*/
951	if (SvMAGICAL (string) || !SvPOK (string))
952	string = sv_2mortal (newSVsv (string));
953
954	SvUPGRADE (string, SVt_PV);
955
956	/* work around a bug in perl 5.10, which causes SvCUR to fail an
957	* assertion with -DDEBUGGING, although SvCUR is documented to
958	* return the xpv_cur field which certainly exists after upgrading.
959	* according to nicholas clark, calling SvPOK fixes this.
960	* But it doesn't fix it, so try another workaround, call SvPV_nolen
961	* and hope for the best.
962	* Damnit, SvPV_nolen still trips over yet another assertion. This
963	* assertion business is seriously broken, try yet another workaround
964	* for the broken -DDEBUGGING.
965	*/
966	{
967	#ifdef DEBUGGING
968	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
969	#else
970	STRLEN offset = SvCUR (string);
971	#endif
972
973	if (offset > cbor->max_size && cbor->max_size)	1165	if (len > cbor->max_size && cbor->max_size)
974	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1166	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
975	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1167	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1168
980	dec.cbor = *cbor;	1169	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1170	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1171	dec.end = (U8 *)data + len;
983	dec.err = 0;
984	dec.depth = 0;
985
986	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
987	;//TODO dec.cbor.flags |= F_HOOK;
988		1172
989	sv = decode_sv (&dec);	1173	sv = decode_sv (&dec);
990		1174
991	if (offset_return)	1175	if (offset_return)
992	*offset_return = dec.cur;	1176	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1179	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1180	dec.err = "garbage after CBOR object";
997		1181
998	if (dec.err)	1182	if (dec.err)
999	{	1183	{
		1184	if (dec.shareable)
		1185	{
		1186	// need to break cyclic links, which whould all be in shareable
		1187	int i;
		1188	SV **svp;
		1189
		1190	for (i = av_len (dec.shareable) + 1; i--; )
		1191	if ((svp = av_fetch (dec.shareable, i, 0)))
		1192	sv_setsv (*svp, &PL_sv_undef);
		1193	}
		1194
1000	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1196	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1197	}
1003		1198
1004	sv = sv_2mortal (sv);	1199	sv = sv_2mortal (sv);
1005		1200
1006	return sv;	1201	return sv;
1007	}	1202	}
1008		1203
		1204	/////////////////////////////////////////////////////////////////////////////
		1205	// incremental parser
		1206
		1207	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1208
		1209	// returns 0 for notyet, 1 for success or error
		1210	static int
		1211	incr_parse (CBOR *self, SV *cborstr)
		1212	{
		1213	STRLEN cur;
		1214	SvPV (cborstr, cur);
		1215
		1216	while (ecb_expect_true (self->incr_need <= cur))
		1217	{
		1218	// table of integer count bytes
		1219	static I8 incr_len[MINOR_MASK + 1] = {
		1220	0, 0, 0, 0, 0, 0, 0, 0,
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	1, 2, 4, 8,-1,-1,-1,-2
		1224	};
		1225
		1226	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1227	U8 m = *p & MINOR_MASK;
		1228	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1229	I8 ilen = incr_len[m];
		1230
		1231	self->incr_need = self->incr_pos + 1;
		1232
		1233	if (ecb_expect_false (ilen < 0))
		1234	{
		1235	if (m != MINOR_INDEF)
		1236	return 1; // error
		1237
		1238	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1239	{
		1240	if (count >= 0)
		1241	return 1; // error
		1242
		1243	count = 1;
		1244	}
		1245	else
		1246	{
		1247	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1248	count = -1;
		1249	}
		1250	}
		1251	else
		1252	{
		1253	self->incr_need += ilen;
		1254	if (ecb_expect_false (self->incr_need > cur))
		1255	return 0;
		1256
		1257	int major = *p >> MAJOR_SHIFT;
		1258
		1259	switch (major)
		1260	{
		1261	case MAJOR_BYTES >> MAJOR_SHIFT:
		1262	case MAJOR_TEXT >> MAJOR_SHIFT:
		1263	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1264	case MAJOR_MAP >> MAJOR_SHIFT:
		1265	{
		1266	UV len;
		1267
		1268	if (ecb_expect_false (ilen))
		1269	{
		1270	len = 0;
		1271
		1272	do {
		1273	len = (len << 8) | *++p;
		1274	} while (--ilen);
		1275	}
		1276	else
		1277	len = m;
		1278
		1279	switch (major)
		1280	{
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	self->incr_need += len;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	break;
		1288
		1289	case MAJOR_MAP >> MAJOR_SHIFT:
		1290	len <<= 1;
		1291	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1292	if (len)
		1293	{
		1294	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1295	count = len + 1;
		1296	}
		1297	break;
		1298	}
		1299	}
		1300	}
		1301	}
		1302
		1303	self->incr_pos = self->incr_need;
		1304
		1305	if (count > 0)
		1306	{
		1307	while (!--count)
		1308	{
		1309	if (!AvFILLp (self->incr_count))
		1310	return 1; // done
		1311
		1312	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1313	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1314	}
		1315
		1316	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1317	}
		1318	}
		1319
		1320	return 0;
		1321	}
		1322
		1323
1009	/////////////////////////////////////////////////////////////////////////////	1324	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1325	// XS interface functions
1011		1326
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1327	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1328
1014	BOOT:	1329	BOOT:
1015	{	1330	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1331	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1332	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1333
1019	cbor_true = get_bool ("CBOR::XS::true");	1334	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1335	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1336
		1337	types_true = get_bool ("Types::Serialiser::true" );
		1338	types_false = get_bool ("Types::Serialiser::false");
		1339	types_error = get_bool ("Types::Serialiser::error");
		1340
		1341	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1342
		1343	sv_cbor = newSVpv ("CBOR", 0);
		1344	SvREADONLY_on (sv_cbor);
1021	}	1345	}
1022		1346
1023	PROTOTYPES: DISABLE	1347	PROTOTYPES: DISABLE
1024		1348
1025	void CLONE (...)	1349	void CLONE (...)
1026	CODE:	1350	CODE:
1027	cbor_stash = 0;	1351	cbor_stash = 0;
		1352	cbor_tagged_stash = 0;
		1353	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1354	types_boolean_stash = 0;
1029		1355
1030	void new (char *klass)	1356	void new (char *klass)
1031	PPCODE:	1357	PPCODE:
1032	{	1358	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1359	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1367
1042	void shrink (CBOR *self, int enable = 1)	1368	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1369	ALIAS:
1044	shrink = F_SHRINK	1370	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1371	allow_unknown = F_ALLOW_UNKNOWN
		1372	allow_sharing = F_ALLOW_SHARING
		1373	allow_cycles = F_ALLOW_CYCLES
		1374	pack_strings = F_PACK_STRINGS
		1375	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1376	PPCODE:
1047	{	1377	{
1048	if (enable)	1378	if (enable)
1049	self->flags |= ix;	1379	self->flags |= ix;
1050	else	1380	else
…		…
1055		1385
1056	void get_shrink (CBOR *self)	1386	void get_shrink (CBOR *self)
1057	ALIAS:	1387	ALIAS:
1058	get_shrink = F_SHRINK	1388	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1389	get_allow_unknown = F_ALLOW_UNKNOWN
		1390	get_allow_sharing = F_ALLOW_SHARING
		1391	get_allow_cycles = F_ALLOW_CYCLES
		1392	get_pack_strings = F_PACK_STRINGS
		1393	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1394	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1395	XPUSHs (boolSV (self->flags & ix));
1062		1396
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1397	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1398	PPCODE:
…		…
1080	CODE:	1414	CODE:
1081	RETVAL = self->max_size;	1415	RETVAL = self->max_size;
1082	OUTPUT:	1416	OUTPUT:
1083	RETVAL	1417	RETVAL
1084		1418
1085	#if 0 //TODO	1419	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1420	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1421	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1422	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1423	XPUSHs (ST (0));
1094	}
1095		1424
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1425	SV *get_filter (CBOR *self)
1097	PPCODE:	1426	CODE:
1098	{	1427	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1428	OUTPUT:
1100	self->cb_sk_object = newHV ();	1429	RETVAL
1101
1102	if (SvOK (cb))
1103	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1104	else
1105	{
1106	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1107
1108	if (!HvKEYS (self->cb_sk_object))
1109	{
1110	SvREFCNT_dec (self->cb_sk_object);
1111	self->cb_sk_object = 0;
1112	}
1113	}
1114
1115	XPUSHs (ST (0));
1116	}
1117
1118	#endif
1119		1430
1120	void encode (CBOR *self, SV *scalar)	1431	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1432	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1433	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1434	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1447	EXTEND (SP, 2);
1137	PUSHs (sv);	1448	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1449	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1450	}
1140		1451
		1452	void incr_parse (CBOR *self, SV *cborstr, int chop = 0)
		1453	PPCODE:
		1454	{
		1455	if (SvUTF8 (cborstr))
		1456	sv_utf8_downgrade (cborstr, 0);
		1457
		1458	if (!self->incr_count)
		1459	{
		1460	self->incr_count = newAV ();
		1461	self->incr_pos = 0;
		1462	self->incr_need = 1;
		1463
		1464	av_push (self->incr_count, newSViv (1));
		1465	}
		1466
		1467	for (;;)
		1468	{
		1469	if (!incr_parse (self, cborstr))
		1470	{
		1471	if (self->incr_need > self->max_size && self->max_size)
		1472	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1473	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1474
		1475	break;
		1476	}
		1477
		1478	SV *sv;
		1479	char *offset;
		1480
		1481	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1482	XPUSHs (sv);
		1483
		1484	av_clear (self->incr_count);
		1485	av_push (self->incr_count, newSViv (1));
		1486
		1487	if (chop)
		1488	{
		1489	self->incr_pos = 0;
		1490	sv_chop (cborstr, offset);
		1491	}
		1492	else
		1493	self->incr_pos = offset - SvPVX (cborstr);
		1494
		1495	self->incr_need = self->incr_pos + 1;
		1496	}
		1497	}
		1498
		1499	void incr_reset (CBOR *self)
		1500	CODE:
		1501	{
		1502	SvREFCNT_dec (self->incr_count);
		1503	self->incr_count = 0;
		1504	}
		1505
1141	void DESTROY (CBOR *self)	1506	void DESTROY (CBOR *self)
1142	CODE:	1507	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1508	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1509
1146	PROTOTYPES: ENABLE	1510	PROTOTYPES: ENABLE
1147		1511
1148	void encode_cbor (SV *scalar)	1512	void encode_cbor (SV *scalar)
		1513	ALIAS:
		1514	encode_cbor = 0
		1515	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1516	PPCODE:
1150	{	1517	{
1151	CBOR cbor;	1518	CBOR cbor;
1152	cbor_init (&cbor);	1519	cbor_init (&cbor);
		1520	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1521	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1522	XPUSHs (scalar);
1155	}	1523	}
1156		1524
1157	void decode_cbor (SV *cborstr)	1525	void decode_cbor (SV *cborstr)

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