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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.42 by root, Tue Dec 10 15:31:40 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	#if defined(__BORLANDC__) || defined(_MSC_VER)	14	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	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
17		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
18	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
19	#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
20		105
21	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
22		107
23	#define SB do {	108	#define SB do {
24	#define SE } while (0)	109	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		110
37	#define IN_RANGE_INC(type,val,beg,end) \	111	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	112	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	113	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		114
…		…
46	#else	120	#else
47	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
49	#endif	123	#endif
50		124
51	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::
52	static SV *cbor_true, *cbor_false;	126	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		127
54	typedef struct {	128	typedef struct {
55	U32 flags;	129	U32 flags;
56	U32 max_depth;	130	U32 max_depth;
57	STRLEN max_size;	131	STRLEN max_size;
		132	SV *filter;
58		133
59	SV *cb_object;	134	// for the incremental parser
60	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.
61	} CBOR;	138	} CBOR;
62		139
63	INLINE void	140	ecb_inline void
64	cbor_init (CBOR *cbor)	141	cbor_init (CBOR *cbor)
65	{	142	{
66	Zero (cbor, 1, CBOR);	143	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	144	cbor->max_depth = 512;
68	}	145	}
69		146
		147	ecb_inline void
		148	cbor_free (CBOR *cbor)
		149	{
		150	SvREFCNT_dec (cbor->filter);
		151	SvREFCNT_dec (cbor->incr_count);
		152	}
		153
70	/////////////////////////////////////////////////////////////////////////////	154	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	155	// utility functions
72		156
73	INLINE SV *	157	ecb_inline SV *
74	get_bool (const char *name)	158	get_bool (const char *name)
75	{	159	{
76	SV *sv = get_sv (name, 1);	160	SV *sv = get_sv (name, 1);
77		161
78	SvREADONLY_on (sv);	162	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	163	SvREADONLY_on (SvRV (sv));
80		164
81	return sv;	165	return sv;
82	}	166	}
83		167
84	INLINE void	168	ecb_inline void
85	shrink (SV *sv)	169	shrink (SV *sv)
86	{	170	{
87	sv_utf8_downgrade (sv, 1);	171	sv_utf8_downgrade (sv, 1);
88		172
89	if (SvLEN (sv) > SvCUR (sv) + 1)	173	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	178	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	179	#endif
96	}	180	}
97	}	181	}
98		182
99	/////////////////////////////////////////////////////////////////////////////	183	// minimum length of a string to be registered for stringref
100	// fp hell	184	ecb_inline int
101		185	minimum_string_length (UV idx)
102	//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	}
103		197
104	/////////////////////////////////////////////////////////////////////////////	198	/////////////////////////////////////////////////////////////////////////////
105	// encoder	199	// encoder
106		200
107	// structure used for encoding CBOR	201	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	204	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	205	char *end; // SvEND (sv)
112	SV *sv; // result scalar	206	SV *sv; // result scalar
113	CBOR cbor;	207	CBOR cbor;
114	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;
115	} enc_t;	213	} enc_t;
116		214
117	INLINE void	215	ecb_inline void
118	need (enc_t *enc, STRLEN len)	216	need (enc_t *enc, STRLEN len)
119	{	217	{
120	if (expect_false (enc->cur + len >= enc->end))	218	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	219	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	220	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	221	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	222	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	223	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	224	}
127	}	225	}
128		226
129	INLINE void	227	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	228	encode_ch (enc_t *enc, char ch)
131	{	229	{
132	need (enc, 1);	230	need (enc, 1);
133	*enc->cur++ = ch;	231	*enc->cur++ = ch;
134	}	232	}
…		…
136	static void	234	static void
137	encode_uint (enc_t *enc, int major, UV len)	235	encode_uint (enc_t *enc, int major, UV len)
138	{	236	{
139	need (enc, 9);	237	need (enc, 9);
140		238
141	if (len < 24)	239	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	240	*enc->cur++ = major | len;
143	else if (len < 0x100)	241	else if (ecb_expect_true (len <= 0xffU))
144	{	242	{
145	*enc->cur++ = major | 24;	243	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	244	*enc->cur++ = len;
147	}	245	}
148	else if (len < 0x10000)	246	else if (len <= 0xffffU)
149	{	247	{
150	*enc->cur++ = major | 25;	248	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	249	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	250	*enc->cur++ = len;
153	}	251	}
154	else if (len < 0x100000000)	252	else if (len <= 0xffffffffU)
155	{	253	{
156	*enc->cur++ = major | 26;	254	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	255	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	256	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	257	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	258	*enc->cur++ = len;
161	}	259	}
162	else if (len)	260	else
163	{	261	{
164	*enc->cur++ = major | 27;	262	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	263	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	264	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	265	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	266	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	267	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	269	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	270	*enc->cur++ = len;
173	}	271	}
174	}	272	}
175		273
176	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
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	281	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	282	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	283	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	284	need (enc, len);
181	memcpy (enc->cur, str, len);	285	memcpy (enc->cur, str, len);
182	enc->cur += len;	286	enc->cur += len;
183	}	287	}
184		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
185	static void encode_sv (enc_t *enc, SV *sv);	314	static void encode_sv (enc_t *enc, SV *sv);
186		315
187	static void	316	static void
188	encode_av (enc_t *enc, AV *av)	317	encode_av (enc_t *enc, AV *av)
189	{	318	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	321	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	322	croak (ERR_NESTING_EXCEEDED);
194		323
195	++enc->depth;	324	++enc->depth;
196		325
197	encode_uint (enc, 0x80, len + 1);	326	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		327
199	for (i = 0; i <= len; ++i)	328	for (i = 0; i <= len; ++i)
200	{	329	{
201	SV **svp = av_fetch (av, i, 0);	330	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	331	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
217		346
218	int pairs = hv_iterinit (hv);	347	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	348	int mg = SvMAGICAL (hv);
220		349
221	if (mg)	350	if (mg)
222	encode_ch (enc, 0xa0 | 31);	351	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	352	else
224	encode_uint (enc, 0xa0, pairs);	353	encode_uint (enc, MAJOR_MAP, pairs);
225		354
226	while ((he = hv_iternext (hv)))	355	while ((he = hv_iternext (hv)))
227	{	356	{
228	if (HeKLEN (he) == HEf_SVKEY)	357	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	358	encode_sv (enc, HeSVKEY (he));
230	else	359	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	360	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		361
233	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));
234	}	363	}
235		364
236	if (mg)	365	if (mg)
237	encode_ch (enc, 0xe0 | 31);	366	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		367
239	--enc->depth;	368	--enc->depth;
240	}	369	}
241		370
242	// encode objects, arrays and special \0=false and \1=true values.	371	// encode objects, arrays and special \0=false and \1=true values.
243	static void	372	static void
244	encode_rv (enc_t *enc, SV *sv)	373	encode_rv (enc_t *enc, SV *sv)
245	{	374	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	375	SvGETMAGIC (sv);
		376
249	svt = SvTYPE (sv);	377	svtype svt = SvTYPE (sv);
250		378
251	if (expect_false (SvOBJECT (sv)))	379	if (ecb_expect_false (SvOBJECT (sv)))
252	{	380	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	381	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? 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
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	389	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		390
257	if (SvSTASH (sv) == stash)	391	HV *stash = SvSTASH (sv);
258	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	}
259	else	429	else
260	{	430	{
261	#if 0 //TODO	431	sv_setuv (*svp, enc->shareable_idx);
262	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)))
263	{	443	{
		444	dSP;
		445
		446	ENTER; SAVETMPS; PUSHMARK (SP);
264	// 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
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	448	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		449
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	450	PUTBACK;
		451	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	452	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	453	SPAGAIN;
278		454
279	// catch this surprisingly common error	455	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	456	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	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));
282		458
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	459	encode_sv (enc, POPs);
287		460
		461	PUTBACK;
		462
288	FREETMPS; LEAVE;	463	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	464	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	465	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	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	}
298	else	494	else
299	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",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	496	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	497	}
304	else if (svt == SVt_PVHV)	498	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	499	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	500	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	501	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	502	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	503	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	encode_tag (enc, CBOR_TAG_INDIRECTION);
		505	encode_sv (enc, sv);
		506	}
328	}	507	}
329		508
330	static void	509	static void
331	encode_nv (enc_t *enc, SV *sv)	510	encode_nv (enc_t *enc, SV *sv)
332	{	511	{
333	double nv = SvNVX (sv);	512	double nv = SvNVX (sv);
334		513
335	need (enc, 9);	514	need (enc, 9);
336		515
337	if (expect_false (nv == (U32)nv))	516	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	517	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	518	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	519	else if (ecb_expect_false (nv == (float)nv))
341	{	520	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	521	uint32_t fp = ecb_float_to_binary32 (nv);
343		522
344	*enc->cur++ = 0xe0 | 26;	523	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		524
346	if (!ecb_big_endian ())	525	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	526	fp = ecb_bswap32 (fp);
348		527
349	memcpy (enc->cur, &fp, 4);	528	memcpy (enc->cur, &fp, 4);
…		…
351	}	530	}
352	else	531	else
353	{	532	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	533	uint64_t fp = ecb_double_to_binary64 (nv);
355		534
356	*enc->cur++ = 0xe0 | 27;	535	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		536
358	if (!ecb_big_endian ())	537	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	538	fp = ecb_bswap64 (fp);
360		539
361	memcpy (enc->cur, &fp, 8);	540	memcpy (enc->cur, &fp, 8);
…		…
370		549
371	if (SvPOKp (sv))	550	if (SvPOKp (sv))
372	{	551	{
373	STRLEN len;	552	STRLEN len;
374	char *str = SvPV (sv, len);	553	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	554	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	555	}
377	else if (SvNOKp (sv))	556	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	557	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	558	else if (SvIOKp (sv))
380	{	559	{
381	if (SvIsUV (sv))	560	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	561	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	562	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	563	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	564	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	565	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	566	}
388	else if (SvROK (sv))	567	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	568	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	569	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	570	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	571	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	572	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	573	else
395	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",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	575	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	576	}
398		577
399	static SV *	578	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	579	encode_cbor (SV *scalar, CBOR *cbor)
401	{	580	{
402	enc_t enc;	581	enc_t enc = { };
403		582
404	enc.cbor = *cbor;	583	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	584	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	585	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	586	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		587
410	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
411	encode_sv (&enc, scalar);	597	encode_sv (&enc, scalar);
412		598
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	599	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*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
415		601
…		…
429	U8 *end; // end of input string	615	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	616	const char *err; // parse error, if != 0
431	CBOR cbor;	617	CBOR cbor;
432	U32 depth; // recursion depth	618	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	619	U32 maxdepth; // recursion depth limit
		620	AV *shareable;
		621	AV *stringref;
		622	SV *decode_tagged;
434	} dec_t;	623	} dec_t;
435		624
436	#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
437		626
438	#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")
439		628
440	#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)
441	#define DEC_DEC_DEPTH --dec->depth	630	#define DEC_DEC_DEPTH --dec->depth
442		631
443	static UV	632	static UV
444	decode_uint (dec_t *dec)	633	decode_uint (dec_t *dec)
445	{	634	{
446	switch (*dec->cur & 31)	635	U8 m = *dec->cur & MINOR_MASK;
447	{	636	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		637
453	case 24:	638	if (ecb_expect_true (m < LENGTH_EXT1))
		639	return m;
		640	else if (ecb_expect_true (m == LENGTH_EXT1))
		641	{
454	WANT (2);	642	WANT (1);
455	dec->cur += 2;	643	dec->cur += 1;
456	return dec->cur[-1];	644	return dec->cur[-1];
457		645	}
458	case 25:	646	else if (ecb_expect_true (m == LENGTH_EXT2))
		647	{
459	WANT (3);	648	WANT (2);
460	dec->cur += 3;	649	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	650	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	651	| ((UV)dec->cur[-1]);
463		652	}
464	case 26:	653	else if (ecb_expect_true (m == LENGTH_EXT4))
		654	{
465	WANT (5);	655	WANT (4);
466	dec->cur += 5;	656	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	657	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	658	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	659	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	660	| ((UV)dec->cur[-1]);
471		661	}
472	case 27:	662	else if (ecb_expect_true (m == LENGTH_EXT8))
		663	{
473	WANT (9);	664	WANT (8);
474	dec->cur += 9;	665	dec->cur += 8;
		666
		667	return
		668	#if UVSIZE < 8
		669	0
		670	#else
475	return (((UV)dec->cur[-8]) << 56)	671	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	672	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	673	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	674	| (((UV)dec->cur[-5]) << 32)
		675	#endif
479	| (((UV)dec->cur[-4]) << 24)	676	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	677	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	678	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	679	| ((UV)dec->cur[-1]);
483		680	}
484	default:	681	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	682	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		683
488	fail:	684	fail:
489	return 0;	685	return 0;
490	}	686	}
491		687
…		…
496	{	692	{
497	AV *av = newAV ();	693	AV *av = newAV ();
498		694
499	DEC_INC_DEPTH;	695	DEC_INC_DEPTH;
500		696
501	if ((*dec->cur & 31) == 31)	697	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	698	{
503	++dec->cur;	699	++dec->cur;
504		700
505	for (;;)	701	for (;;)
506	{	702	{
507	WANT (1);	703	WANT (1);
508		704
509	if (*dec->cur == 0xe0 | 31)	705	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	706	{
511	++dec->cur;	707	++dec->cur;
512	break;	708	break;
513	}	709	}
514		710
…		…
517	}	713	}
518	else	714	else
519	{	715	{
520	int i, len = decode_uint (dec);	716	int i, len = decode_uint (dec);
521		717
		718	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	719	av_fill (av, len - 1);
523		720
524	for (i = 0; i < len; ++i)	721	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	722	AvARRAY (av)[i] = decode_sv (dec);
526	}	723	}
…		…
532	SvREFCNT_dec (av);	729	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	730	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	731	return &PL_sv_undef;
535	}	732	}
536		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
537	static SV *	778	static SV *
538	decode_hv (dec_t *dec)	779	decode_hv (dec_t *dec)
539	{	780	{
540	HV *hv = newHV ();	781	HV *hv = newHV ();
541		782
542	DEC_INC_DEPTH;	783	DEC_INC_DEPTH;
543		784
544	if ((*dec->cur & 31) == 31)	785	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	786	{
546	++dec->cur;	787	++dec->cur;
547		788
548	for (;;)	789	for (;;)
549	{	790	{
550	WANT (1);	791	WANT (1);
551		792
552	if (*dec->cur == 0xe0 | 31)	793	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	794	{
554	++dec->cur;	795	++dec->cur;
555	break;	796	break;
556	}	797	}
557		798
558	SV *k = decode_sv (dec);	799	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	800	}
563	}	801	}
564	else	802	else
565	{	803	{
566	int len = decode_uint (dec);	804	int pairs = decode_uint (dec);
567		805
568	while (len--)	806	while (pairs--)
569	{	807	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	808	}
576		809
577	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	811	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		812
735	fail:	813	fail:
736	SvREFCNT_dec (hv);	814	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	816	return &PL_sv_undef;
739	}	817	}
740		818
741	static SV *	819	static SV *
742	decode_str (dec_t *dec, int utf8)	820	decode_str (dec_t *dec, int utf8)
743	{	821	{
744	SV *sv;	822	SV *sv = 0;
745		823
746	if ((*dec->cur & 31) == 31)	824	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	825	{
		826	// indefinite length strings
748	++dec->cur;	827	++dec->cur;
749		828
		829	U8 major = *dec->cur & MAJOR_MISC;
		830
750	sv = newSVpvn ("", 0);	831	sv = newSVpvn ("", 0);
751		832
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	833	for (;;)
754	{	834	{
755	WANT (1);	835	WANT (1);
756		836
757	if (*dec->cur == 0xe0 | 31)	837	if ((*dec->cur - major) > LENGTH_EXT8)
		838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	839	{
759	++dec->cur;	840	++dec->cur;
760	break;	841	break;
761	}	842	}
		843	else
		844	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		845
763	SV *sv2 = decode_sv (dec);	846	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	847
		848	WANT (len);
		849	sv_catpvn (sv, dec->cur, len);
		850	dec->cur += len;
765	}	851	}
766	}	852	}
767	else	853	else
768	{	854	{
769	STRLEN len = decode_uint (dec);	855	STRLEN len = decode_uint (dec);
770		856
771	WANT (len);	857	WANT (len);
772	sv = newSVpvn (dec->cur, len);	858	sv = newSVpvn (dec->cur, len);
773	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));
774	}	864	}
775		865
776	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
777	SvUTF8_on (sv);	872	SvUTF8_on (sv);
		873	}
778		874
779	return sv;	875	return sv;
780		876
781	fail:	877	fail:
		878	SvREFCNT_dec (sv);
		879	return &PL_sv_undef;
		880	}
		881
		882	static SV *
		883	decode_tagged (dec_t *dec)
		884	{
		885	SV *sv = 0;
		886	UV tag = decode_uint (dec);
		887
		888	WANT (1);
		889
		890	switch (tag)
		891	{
		892	case CBOR_TAG_MAGIC:
		893	sv = decode_sv (dec);
		894	break;
		895
		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
		1063	return sv;
		1064
		1065	fail:
		1066	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1067	return &PL_sv_undef;
783	}	1068	}
784		1069
785	static SV *	1070	static SV *
786	decode_sv (dec_t *dec)	1071	decode_sv (dec_t *dec)
787	{	1072	{
788	WANT (1);	1073	WANT (1);
789		1074
790	switch (*dec->cur >> 5)	1075	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1076	{
792	case 0: // unsigned int	1077	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1078	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1079	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1080	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1081	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1082	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1083	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1084
800	return decode_str (dec, 1);	1085	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1086	switch (*dec->cur++ & MINOR_MASK)
810	{	1087	{
811	case 20:	1088	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1089	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1090	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1091	#endif
815	return newSVsv (cbor_false);	1092	return newSVsv (types_false);
816	case 21:	1093	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1094	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1095	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1096	#endif
820	return newSVsv (cbor_true);	1097	return newSVsv (types_true);
821	case 22:	1098	case SIMPLE_NULL:
822	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);
823		1105
824	case 25:	1106	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1107	{
		1108	WANT (2);
828		1109
		1110	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1111	dec->cur += 2;
		1112
		1113	return newSVnv (ecb_binary16_to_float (fp));
		1114	}
		1115
829	case 26:	1116	case MISC_FLOAT32:
830	{	1117	{
831	uint32_t fp;	1118	uint32_t fp;
832	WANT (4);	1119	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1120	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1121	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1124	fp = ecb_bswap32 (fp);
838		1125
839	return newSVnv (ecb_binary32_to_float (fp));	1126	return newSVnv (ecb_binary32_to_float (fp));
840	}	1127	}
841		1128
842	case 27:	1129	case MISC_FLOAT64:
843	{	1130	{
844	uint64_t fp;	1131	uint64_t fp;
845	WANT (8);	1132	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1133	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1134	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1137	fp = ecb_bswap64 (fp);
851		1138
852	return newSVnv (ecb_binary64_to_double (fp));	1139	return newSVnv (ecb_binary64_to_double (fp));
853	}	1140	}
854		1141
855	// 0..19 unassigned	1142	// 0..19 unassigned simple
856	// 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
857	default:	1146	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1147	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1148	}
860		1149
861	break;	1150	break;
862	}	1151	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1152
920	fail:	1153	fail:
921	return &PL_sv_undef;	1154	return &PL_sv_undef;
922	}	1155	}
923		1156
924	static SV *	1157	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1158	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1159	{
927	dec_t dec;	1160	dec_t dec = { };
928	SV *sv;	1161	SV *sv;
		1162	STRLEN len;
		1163	char *data = SvPVbyte (string, len);
929		1164
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1165	if (len > cbor->max_size && cbor->max_size)
959	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",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1167	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1168
965	dec.cbor = *cbor;	1169	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1170	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1171	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1172
974	sv = decode_sv (&dec);	1173	sv = decode_sv (&dec);
975		1174
976	if (offset_return)	1175	if (offset_return)
977	*offset_return = dec.cur;	1176	*offset_return = dec.cur;
978		1177
979	if (!(offset_return || !sv))	1178	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1179	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1180	dec.err = "garbage after CBOR object";
		1181
		1182	if (dec.err)
		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
984	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988
989	if (!sv)
990	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);
		1197	}
991		1198
992	sv = sv_2mortal (sv);	1199	sv = sv_2mortal (sv);
993		1200
994	return sv;	1201	return sv;
995	}	1202	}
996		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
997	/////////////////////////////////////////////////////////////////////////////	1324	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1325	// XS interface functions
999		1326
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1327	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1328
1002	BOOT:	1329	BOOT:
1003	{	1330	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1331	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1332	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1333
1007	cbor_true = get_bool ("CBOR::XS::true");	1334	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	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);
1009	}	1345	}
1010		1346
1011	PROTOTYPES: DISABLE	1347	PROTOTYPES: DISABLE
1012		1348
1013	void CLONE (...)	1349	void CLONE (...)
1014	CODE:	1350	CODE:
1015	cbor_stash = 0;	1351	cbor_stash = 0;
		1352	cbor_tagged_stash = 0;
		1353	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1354	types_boolean_stash = 0;
1017		1355
1018	void new (char *klass)	1356	void new (char *klass)
1019	PPCODE:	1357	PPCODE:
1020	{	1358	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1359	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1367
1030	void shrink (CBOR *self, int enable = 1)	1368	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1369	ALIAS:
1032	shrink = F_SHRINK	1370	shrink = F_SHRINK
1033	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
1034	PPCODE:	1376	PPCODE:
1035	{	1377	{
1036	if (enable)	1378	if (enable)
1037	self->flags |= ix;	1379	self->flags |= ix;
1038	else	1380	else
…		…
1043		1385
1044	void get_shrink (CBOR *self)	1386	void get_shrink (CBOR *self)
1045	ALIAS:	1387	ALIAS:
1046	get_shrink = F_SHRINK	1388	get_shrink = F_SHRINK
1047	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
1048	PPCODE:	1394	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1395	XPUSHs (boolSV (self->flags & ix));
1050		1396
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1397	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1398	PPCODE:
…		…
1068	CODE:	1414	CODE:
1069	RETVAL = self->max_size;	1415	RETVAL = self->max_size;
1070	OUTPUT:	1416	OUTPUT:
1071	RETVAL	1417	RETVAL
1072		1418
1073	#if 0 //TODO	1419	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1420	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1421	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1422	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1423	XPUSHs (ST (0));
1082	}
1083		1424
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1425	SV *get_filter (CBOR *self)
1085	PPCODE:	1426	CODE:
1086	{	1427	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1428	OUTPUT:
1088	self->cb_sk_object = newHV ();	1429	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1430
1108	void encode (CBOR *self, SV *scalar)	1431	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1432	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1433	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1434	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1447	EXTEND (SP, 2);
1125	PUSHs (sv);	1448	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1449	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1450	}
1128		1451
		1452	void incr_parse (CBOR *self, SV *cborstr)
		1453	ALIAS:
		1454	incr_parse_multiple = 1
		1455	PPCODE:
		1456	{
		1457	if (SvUTF8 (cborstr))
		1458	sv_utf8_downgrade (cborstr, 0);
		1459
		1460	if (!self->incr_count)
		1461	{
		1462	self->incr_count = newAV ();
		1463	self->incr_pos = 0;
		1464	self->incr_need = 1;
		1465
		1466	av_push (self->incr_count, newSViv (1));
		1467	}
		1468
		1469	do
		1470	{
		1471	if (!incr_parse (self, cborstr))
		1472	{
		1473	if (self->incr_need > self->max_size && self->max_size)
		1474	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1475	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1476
		1477	break;
		1478	}
		1479
		1480	SV *sv;
		1481	char *offset;
		1482
		1483	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1484	XPUSHs (sv);
		1485
		1486	sv_chop (cborstr, offset);
		1487
		1488	av_clear (self->incr_count);
		1489	av_push (self->incr_count, newSViv (1));
		1490
		1491	self->incr_pos = 0;
		1492	self->incr_need = self->incr_pos + 1;
		1493	}
		1494	while (ix);
		1495	}
		1496
		1497	void incr_reset (CBOR *self)
		1498	CODE:
		1499	{
		1500	SvREFCNT_dec (self->incr_count);
		1501	self->incr_count = 0;
		1502	}
		1503
1129	void DESTROY (CBOR *self)	1504	void DESTROY (CBOR *self)
1130	CODE:	1505	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1506	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1507
1134	PROTOTYPES: ENABLE	1508	PROTOTYPES: ENABLE
1135		1509
1136	void encode_cbor (SV *scalar)	1510	void encode_cbor (SV *scalar)
		1511	ALIAS:
		1512	encode_cbor = 0
		1513	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1514	PPCODE:
1138	{	1515	{
1139	CBOR cbor;	1516	CBOR cbor;
1140	cbor_init (&cbor);	1517	cbor_init (&cbor);
		1518	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1519	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1520	XPUSHs (scalar);
1143	}	1521	}
1144		1522
1145	void decode_cbor (SV *cborstr)	1523	void decode_cbor (SV *cborstr)

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