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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.4 by root, Sat Oct 26 21:06:37 2013 UTC vs.
Revision 1.51 by root, Sun Apr 24 13:15:19 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
16		107
17	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
18		109
19	#define SB do {	110	#define SB do {
20	#define SE } while (0)	111	#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		112
33	#define IN_RANGE_INC(type,val,beg,end) \	113	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	114	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	115	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		116
…		…
42	#else	122	#else
43	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
45	#endif	125	#endif
46		126
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		129
50	typedef struct {	130	typedef struct {
51	U32 flags;	131	U32 flags;
52	U32 max_depth;	132	U32 max_depth;
53	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
54		135
55	SV *cb_object;	136	// for the incremental parser
56	HV *cb_sk_object;	137	STRLEN incr_pos; // the current offset into the text
		138	STRLEN incr_need; // minimum bytes needed to decode
		139	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	140	} CBOR;
58		141
59	INLINE void	142	ecb_inline void
60	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
61	{	144	{
62	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	146	cbor->max_depth = 512;
64	}	147	}
65		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
		154	}
		155
66	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	157	// utility functions
68		158
69	INLINE SV *	159	ecb_inline SV *
70	get_bool (const char *name)	160	get_bool (const char *name)
71	{	161	{
72	SV *sv = get_sv (name, 1);	162	SV *sv = get_sv (name, 1);
73		163
74	SvREADONLY_on (sv);	164	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	165	SvREADONLY_on (SvRV (sv));
76		166
77	return sv;	167	return sv;
78	}	168	}
79		169
80	INLINE void	170	ecb_inline void
81	shrink (SV *sv)	171	shrink (SV *sv)
82	{	172	{
83	sv_utf8_downgrade (sv, 1);	173	sv_utf8_downgrade (sv, 1);
84		174
85	if (SvLEN (sv) > SvCUR (sv) + 1)	175	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	181	#endif
92	}	182	}
93	}	183	}
94		184
95	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
96	// fp hell	186	ecb_inline int
97		187	minimum_string_length (UV idx)
98	//TODO	188	{
		189	return idx > 23
		190	? idx > 0xffU
		191	? idx > 0xffffU
		192	? idx > 0xffffffffU
		193	? 11
		194	: 7
		195	: 5
		196	: 4
		197	: 3;
		198	}
99		199
100	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
101	// encoder	201	// encoder
102		202
103	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
108	SV *sv; // result scalar	208	SV *sv; // result scalar
109	CBOR cbor;	209	CBOR cbor;
110	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
111	} enc_t;	215	} enc_t;
112		216
113	INLINE void	217	ecb_inline void
114	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
115	{	219	{
116	if (expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	221	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	226	}
123	}	227	}
124		228
125	INLINE void	229	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	230	encode_ch (enc_t *enc, char ch)
127	{	231	{
128	need (enc, 1);	232	need (enc, 1);
129	*enc->cur++ = ch;	233	*enc->cur++ = ch;
130	}	234	}
…		…
132	static void	236	static void
133	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
134	{	238	{
135	need (enc, 9);	239	need (enc, 9);
136		240
137	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
139	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
140	{	244	{
141	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	246	*enc->cur++ = len;
143	}	247	}
144	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
145	{	249	{
146	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	252	*enc->cur++ = len;
149	}	253	}
150	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
151	{	255	{
152	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	260	*enc->cur++ = len;
157	}	261	}
158	else	262	else
159	{	263	{
160	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	272	*enc->cur++ = len;
169	}	273	}
170	}	274	}
171		275
172	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	ecb_inline void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	284	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	if (ecb_expect_false (enc->cbor.flags & F_UTF8_STRINGS))
		286	if (!utf8)
		287	{
		288	SV *sv = sv_newmortal ();
		289	char *s; STRLEN l;
		290
		291	sv_setpvn (sv, str, len);
		292
		293	s = SvPVutf8 (sv, l);
		294	encode_str (enc, 1, s, l);
		295	return;
		296	}
		297
		298	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	299	need (enc, len);
177	memcpy (enc->cur, str, len);	300	memcpy (enc->cur, str, len);
178	enc->cur += len;	301	enc->cur += len;
179	}	302	}
180		303
		304	static void
		305	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		308	{
		309	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		310
		311	if (SvOK (*svp))
		312	{
		313	// already registered, use stringref
		314	encode_tag (enc, CBOR_TAG_STRINGREF);
		315	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		316	return;
		317	}
		318	else if (len >= minimum_string_length (enc->stringref_idx))
		319	{
		320	// register only
		321	sv_setuv (*svp, enc->stringref_idx);
		322	++enc->stringref_idx;
		323	}
		324	}
		325
		326	encode_str (enc, utf8, str, len);
		327	}
		328
181	static void encode_sv (enc_t *enc, SV *sv);	329	static void encode_sv (enc_t *enc, SV *sv);
182		330
183	static void	331	static void
184	encode_av (enc_t *enc, AV *av)	332	encode_av (enc_t *enc, AV *av)
185	{	333	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	336	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	337	croak (ERR_NESTING_EXCEEDED);
190		338
191	++enc->depth;	339	++enc->depth;
192		340
193	encode_uint (enc, 0x80, len + 1);	341	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		342
		343	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	344	for (i = 0; i <= len; ++i)
196	{	345	{
197	SV **svp = av_fetch (av, i, 0);	346	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	347	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	348	}
		349	else
		350	for (i = 0; i <= len; ++i)
		351	{
		352	SV *sv = AvARRAY (av)[i];
		353	encode_sv (enc, sv ? sv : &PL_sv_undef);
		354	}
200		355
201	--enc->depth;	356	--enc->depth;
202	}	357	}
203		358
204	static void	359	static void
…		…
213		368
214	int pairs = hv_iterinit (hv);	369	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	370	int mg = SvMAGICAL (hv);
216		371
217	if (mg)	372	if (mg)
218	encode_ch (enc, 0xa0 | 31);	373	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	374	else
220	encode_uint (enc, 0xa0, pairs);	375	encode_uint (enc, MAJOR_MAP, pairs);
221		376
222	while ((he = hv_iternext (hv)))	377	while ((he = hv_iternext (hv)))
223	{	378	{
224	if (HeKLEN (he) == HEf_SVKEY)	379	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	380	encode_sv (enc, HeSVKEY (he));
226	else	381	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	382	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		383
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	384	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	385	}
231		386
232	if (mg)	387	if (mg)
233	encode_ch (enc, 0xe0 | 31);	388	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		389
235	--enc->depth;	390	--enc->depth;
236	}	391	}
237		392
238	// encode objects, arrays and special \0=false and \1=true values.	393	// encode objects, arrays and special \0=false and \1=true values.
239	static void	394	static void
240	encode_rv (enc_t *enc, SV *sv)	395	encode_rv (enc_t *enc, SV *sv)
241	{	396	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	397	SvGETMAGIC (sv);
		398
245	svt = SvTYPE (sv);	399	svtype svt = SvTYPE (sv);
246		400
247	if (expect_false (SvOBJECT (sv)))	401	if (ecb_expect_false (SvOBJECT (sv)))
248	{	402	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	403	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	404	? types_boolean_stash
		405	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		406	HV *error_stash = !CBOR_SLOW || types_error_stash
		407	? types_error_stash
		408	: gv_stashpv ("Types::Serialiser::Error", 1);
		409	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		410	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	411	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		412
253	if (SvSTASH (sv) == stash)	413	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	414
		415	if (stash == boolean_stash)
		416	{
		417	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		418	return;
		419	}
		420	else if (stash == error_stash)
		421	{
		422	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		423	return;
		424	}
		425	else if (stash == tagged_stash)
		426	{
		427	if (svt != SVt_PVAV)
		428	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		429
		430	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		431	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		432
		433	return;
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvREFCNT (sv) > 1)
		438	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		439	{
		440	if (!enc->shareable)
		441	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		442
		443	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		444
		445	if (SvOK (*svp))
		446	{
		447	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		448	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		449	return;
		450	}
255	else	451	else
256	{	452	{
257	#if 0 //TODO	453	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	454	++enc->shareable_idx;
		455	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		456	}
		457	}
		458
		459	if (ecb_expect_false (SvOBJECT (sv)))
		460	{
		461	HV *stash = SvSTASH (sv);
		462	GV *method;
		463
		464	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	465	{
		466	dSP;
		467
		468	ENTER; SAVETMPS;
		469	PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	470	// 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)));	471	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		472
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	473	PUTBACK;
		474	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	475	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	476	SPAGAIN;
274		477
275	// catch this surprisingly common error	478	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	479	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)));	480	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		481
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	482	encode_sv (enc, POPs);
283		483
		484	PUTBACK;
		485
284	FREETMPS; LEAVE;	486	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	}	487	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	488	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	489	{
		490	dSP;
		491
		492	ENTER; SAVETMPS;
		493	SAVESTACK_POS ();
		494	PUSHMARK (SP);
		495	EXTEND (SP, 2);
		496	// we re-bless the reference to get overload and other niceties right
		497	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		498	PUSHs (sv_cbor);
		499
		500	PUTBACK;
		501	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		502	SPAGAIN;
		503
		504	// catch this surprisingly common error
		505	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		506	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		507
		508	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		509	encode_uint (enc, MAJOR_ARRAY, count + 1);
		510	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		511
		512	while (count)
		513	encode_sv (enc, SP[1 - count--]);
		514
		515	PUTBACK;
		516
		517	FREETMPS; LEAVE;
		518	}
294	else	519	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	520	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	521	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	522	}
300	else if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	526	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	527	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	528	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	529	encode_tag (enc, CBOR_TAG_INDIRECTION);
		530	encode_sv (enc, sv);
		531	}
324	}	532	}
325		533
326	static void	534	static void
327	encode_nv (enc_t *enc, SV *sv)	535	encode_nv (enc_t *enc, SV *sv)
328	{	536	{
329	double nv = SvNVX (sv);	537	double nv = SvNVX (sv);
330		538
331	need (enc, 9);	539	need (enc, 9);
332		540
333	if (expect_false (nv == (U32)nv))	541	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	542	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	543	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	544	else if (ecb_expect_false (nv == (float)nv))
337	{	545	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	546	uint32_t fp = ecb_float_to_binary32 (nv);
339		547
340	*enc->cur++ = 0xe0 | 26;	548	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		549
342	if (!ecb_big_endian ())	550	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	551	fp = ecb_bswap32 (fp);
344		552
345	memcpy (enc->cur, &fp, 4);	553	memcpy (enc->cur, &fp, 4);
…		…
347	}	555	}
348	else	556	else
349	{	557	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	558	uint64_t fp = ecb_double_to_binary64 (nv);
351		559
352	*enc->cur++ = 0xe0 | 27;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		561
354	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	563	fp = ecb_bswap64 (fp);
356		564
357	memcpy (enc->cur, &fp, 8);	565	memcpy (enc->cur, &fp, 8);
…		…
366		574
367	if (SvPOKp (sv))	575	if (SvPOKp (sv))
368	{	576	{
369	STRLEN len;	577	STRLEN len;
370	char *str = SvPV (sv, len);	578	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	579	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	580	}
373	else if (SvNOKp (sv))	581	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	582	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	583	else if (SvIOKp (sv))
376	{	584	{
377	if (SvIsUV (sv))	585	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	586	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	587	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	588	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	589	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	590	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	591	}
384	else if (SvROK (sv))	592	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	593	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	594	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	595	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	596	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	597	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	598	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	599	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	600	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	601	}
394		602
395	static SV *	603	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	604	encode_cbor (SV *scalar, CBOR *cbor)
397	{	605	{
398	enc_t enc;	606	enc_t enc = { 0 };
399		607
400	enc.cbor = *cbor;	608	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	609	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	610	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	611	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		612
406	SvPOK_only (enc.sv);	613	SvPOK_only (enc.sv);
		614
		615	if (cbor->flags & F_PACK_STRINGS)
		616	{
		617	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		618	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		619	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		620	}
		621
407	encode_sv (&enc, scalar);	622	encode_sv (&enc, scalar);
408		623
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	624	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	625	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		626
…		…
425	U8 *end; // end of input string	640	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	641	const char *err; // parse error, if != 0
427	CBOR cbor;	642	CBOR cbor;
428	U32 depth; // recursion depth	643	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	644	U32 maxdepth; // recursion depth limit
		645	AV *shareable;
		646	AV *stringref;
		647	SV *decode_tagged;
430	} dec_t;	648	} dec_t;
431		649
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	650	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		651
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	652	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		653
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	654	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	655	#define DEC_DEC_DEPTH --dec->depth
438		656
439	static UV	657	static UV
440	decode_uint (dec_t *dec)	658	decode_uint (dec_t *dec)
441	{	659	{
442	switch (*dec->cur & 31)	660	U8 m = *dec->cur & MINOR_MASK;
443	{	661	++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		662
449	case 24:	663	if (ecb_expect_true (m < LENGTH_EXT1))
		664	return m;
		665	else if (ecb_expect_true (m == LENGTH_EXT1))
		666	{
450	WANT (2);	667	WANT (1);
451	dec->cur += 2;	668	dec->cur += 1;
452	return dec->cur[-1];	669	return dec->cur[-1];
453		670	}
454	case 25:	671	else if (ecb_expect_true (m == LENGTH_EXT2))
		672	{
455	WANT (3);	673	WANT (2);
456	dec->cur += 3;	674	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	675	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	676	| ((UV)dec->cur[-1]);
459		677	}
460	case 26:	678	else if (ecb_expect_true (m == LENGTH_EXT4))
		679	{
461	WANT (5);	680	WANT (4);
462	dec->cur += 5;	681	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	682	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	683	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	684	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	685	| ((UV)dec->cur[-1]);
467		686	}
468	case 27:	687	else if (ecb_expect_true (m == LENGTH_EXT8))
		688	{
469	WANT (9);	689	WANT (8);
470	dec->cur += 9;	690	dec->cur += 8;
		691
		692	return
		693	#if UVSIZE < 8
		694	0
		695	#else
471	return (((UV)dec->cur[-8]) << 56)	696	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	697	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	698	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	699	| (((UV)dec->cur[-5]) << 32)
		700	#endif
475	| (((UV)dec->cur[-4]) << 24)	701	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	702	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	703	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	704	| ((UV)dec->cur[-1]);
479		705	}
480	default:	706	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	707	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		708
484	fail:	709	fail:
485	return 0;	710	return 0;
486	}	711	}
487		712
…		…
492	{	717	{
493	AV *av = newAV ();	718	AV *av = newAV ();
494		719
495	DEC_INC_DEPTH;	720	DEC_INC_DEPTH;
496		721
497	if ((*dec->cur & 31) == 31)	722	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	723	{
499	++dec->cur;	724	++dec->cur;
500		725
501	for (;;)	726	for (;;)
502	{	727	{
503	WANT (1);	728	WANT (1);
504		729
505	if (*dec->cur == (0xe0 | 31))	730	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	731	{
507	++dec->cur;	732	++dec->cur;
508	break;	733	break;
509	}	734	}
510		735
…		…
513	}	738	}
514	else	739	else
515	{	740	{
516	int i, len = decode_uint (dec);	741	int i, len = decode_uint (dec);
517		742
		743	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);	744	av_fill (av, len - 1);
519		745
520	for (i = 0; i < len; ++i)	746	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	747	AvARRAY (av)[i] = decode_sv (dec);
522	}	748	}
…		…
528	SvREFCNT_dec (av);	754	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	755	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	756	return &PL_sv_undef;
531	}	757	}
532		758
		759	static void
		760	decode_he (dec_t *dec, HV *hv)
		761	{
		762	// for speed reasons, we specialcase single-string
		763	// byte or utf-8 strings as keys, but only when !stringref
		764
		765	if (ecb_expect_true (!dec->stringref))
		766	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		767	{
		768	I32 len = decode_uint (dec);
		769	char *key = (char *)dec->cur;
		770
		771	WANT (len);
		772	dec->cur += len;
		773
		774	hv_store (hv, key, len, decode_sv (dec), 0);
		775
		776	return;
		777	}
		778	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		779	{
		780	I32 len = decode_uint (dec);
		781	char *key = (char *)dec->cur;
		782
		783	WANT (len);
		784	dec->cur += len;
		785
		786	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		787	if (!is_utf8_string (key, len))
		788	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		789
		790	hv_store (hv, key, -len, decode_sv (dec), 0);
		791
		792	return;
		793	}
		794
		795	SV *k = decode_sv (dec);
		796	SV *v = decode_sv (dec);
		797
		798	hv_store_ent (hv, k, v, 0);
		799	SvREFCNT_dec (k);
		800
		801	fail:
		802	;
		803	}
		804
533	static SV *	805	static SV *
534	decode_hv (dec_t *dec)	806	decode_hv (dec_t *dec)
535	{	807	{
536	HV *hv = newHV ();	808	HV *hv = newHV ();
537		809
538	DEC_INC_DEPTH;	810	DEC_INC_DEPTH;
539		811
540	if ((*dec->cur & 31) == 31)	812	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	813	{
542	++dec->cur;	814	++dec->cur;
543		815
544	for (;;)	816	for (;;)
545	{	817	{
546	WANT (1);	818	WANT (1);
547		819
548	if (*dec->cur == (0xe0 | 31))	820	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	821	{
550	++dec->cur;	822	++dec->cur;
551	break;	823	break;
552	}	824	}
553		825
554	SV *k = decode_sv (dec);	826	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	827	}
559	}	828	}
560	else	829	else
561	{	830	{
562	int len = decode_uint (dec);	831	int pairs = decode_uint (dec);
563		832
564	while (len--)	833	while (pairs--)
565	{	834	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	}	835	}
572		836
573	DEC_DEC_DEPTH;	837	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	838	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		839
731	fail:	840	fail:
732	SvREFCNT_dec (hv);	841	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	842	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	843	return &PL_sv_undef;
735	}	844	}
736		845
737	static SV *	846	static SV *
738	decode_str (dec_t *dec, int utf8)	847	decode_str (dec_t *dec, int utf8)
739	{	848	{
740	SV *sv;	849	SV *sv = 0;
741		850
742	if ((*dec->cur & 31) == 31)	851	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	852	{
		853	// indefinite length strings
744	++dec->cur;	854	++dec->cur;
745		855
		856	U8 major = *dec->cur & MAJOR_MISC;
		857
746	sv = newSVpvn ("", 0);	858	sv = newSVpvn ("", 0);
747		859
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	860	for (;;)
750	{	861	{
751	WANT (1);	862	WANT (1);
752		863
753	if (*dec->cur == (0xe0 | 31))	864	if ((*dec->cur - major) > LENGTH_EXT8)
		865	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	866	{
755	++dec->cur;	867	++dec->cur;
756	break;	868	break;
757	}	869	}
		870	else
		871	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		872
759	SV *sv2 = decode_sv (dec);	873	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	874
		875	WANT (len);
		876	sv_catpvn (sv, dec->cur, len);
		877	dec->cur += len;
761	}	878	}
762	}	879	}
763	else	880	else
764	{	881	{
765	STRLEN len = decode_uint (dec);	882	STRLEN len = decode_uint (dec);
766		883
767	WANT (len);	884	WANT (len);
768	sv = newSVpvn (dec->cur, len);	885	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	886	dec->cur += len;
		887
		888	if (ecb_expect_false (dec->stringref)
		889	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		890	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	891	}
771		892
772	if (utf8)	893	if (utf8)
		894	{
		895	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		896	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		897	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		898
773	SvUTF8_on (sv);	899	SvUTF8_on (sv);
		900	}
774		901
775	return sv;	902	return sv;
776		903
777	fail:	904	fail:
		905	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	906	return &PL_sv_undef;
779	}	907	}
780		908
781	static SV *	909	static SV *
782	decode_tagged (dec_t *dec)	910	decode_tagged (dec_t *dec)
783	{	911	{
		912	SV *sv = 0;
784	UV tag = decode_uint (dec);	913	UV tag = decode_uint (dec);
		914
		915	WANT (1);
		916
		917	switch (tag)
		918	{
		919	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	920	sv = decode_sv (dec);
		921	break;
786		922
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	923	case CBOR_TAG_INDIRECTION:
		924	sv = newRV_noinc (decode_sv (dec));
		925	break;
		926
		927	case CBOR_TAG_STRINGREF_NAMESPACE:
		928	{
		929	ENTER; SAVETMPS;
		930
		931	SAVESPTR (dec->stringref);
		932	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		933
		934	sv = decode_sv (dec);
		935
		936	FREETMPS; LEAVE;
		937	}
		938	break;
		939
		940	case CBOR_TAG_STRINGREF:
		941	{
		942	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		943	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		944
		945	UV idx = decode_uint (dec);
		946
		947	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		948	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		949
		950	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		951	}
		952	break;
		953
		954	case CBOR_TAG_VALUE_SHAREABLE:
		955	{
		956	if (ecb_expect_false (!dec->shareable))
		957	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		958
		959	if (dec->cbor.flags & F_ALLOW_CYCLES)
		960	{
		961	sv = newSV (0);
		962	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		963
		964	SV *osv = decode_sv (dec);
		965	sv_setsv (sv, osv);
		966	SvREFCNT_dec_NN (osv);
		967	}
		968	else
		969	{
		970	av_push (dec->shareable, &PL_sv_undef);
		971	int idx = AvFILLp (dec->shareable);
		972	sv = decode_sv (dec);
		973	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		974	}
		975	}
		976	break;
		977
		978	case CBOR_TAG_VALUE_SHAREDREF:
		979	{
		980	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		981	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		982
		983	UV idx = decode_uint (dec);
		984
		985	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		986	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		987
		988	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		989
		990	if (sv == &PL_sv_undef)
		991	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		992	}
		993	break;
		994
		995	case CBOR_TAG_PERL_OBJECT:
		996	{
		997	sv = decode_sv (dec);
		998
		999	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1000	ERR ("corrupted CBOR data (non-array perl object)");
		1001
		1002	AV *av = (AV *)SvRV (sv);
		1003	int len = av_len (av) + 1;
		1004	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1005
		1006	if (!stash)
		1007	ERR ("cannot decode perl-object (package does not exist)");
		1008
		1009	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1010
		1011	if (!method)
		1012	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1013
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, len + 1);
		1019	// we re-bless the reference to get overload and other niceties right
		1020	PUSHs (*av_fetch (av, 0, 1));
		1021	PUSHs (sv_cbor);
		1022
		1023	int i;
		1024
		1025	for (i = 1; i < len; ++i)
		1026	PUSHs (*av_fetch (av, i, 1));
		1027
		1028	PUTBACK;
		1029	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1030	SPAGAIN;
		1031
		1032	if (SvTRUE (ERRSV))
		1033	{
		1034	FREETMPS; LEAVE;
		1035	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1036	}
		1037
		1038	SvREFCNT_dec (sv);
		1039	sv = SvREFCNT_inc (POPs);
		1040
		1041	PUTBACK;
		1042
		1043	FREETMPS; LEAVE;
		1044	}
		1045	break;
		1046
		1047	default:
		1048	{
		1049	sv = decode_sv (dec);
		1050
		1051	dSP;
		1052	ENTER; SAVETMPS;
		1053	SAVESTACK_POS ();
		1054	PUSHMARK (SP);
		1055	EXTEND (SP, 2);
		1056	PUSHs (newSVuv (tag));
		1057	PUSHs (sv);
		1058
		1059	PUTBACK;
		1060	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1061	SPAGAIN;
		1062
		1063	if (SvTRUE (ERRSV))
		1064	{
		1065	FREETMPS; LEAVE;
		1066	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1067	}
		1068
		1069	if (count)
		1070	{
		1071	SvREFCNT_dec (sv);
		1072	sv = SvREFCNT_inc (POPs);
		1073	}
		1074	else
		1075	{
		1076	AV *av = newAV ();
		1077	av_push (av, newSVuv (tag));
		1078	av_push (av, sv);
		1079
		1080	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1081	? cbor_tagged_stash
		1082	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1083	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1084	}
		1085
		1086	PUTBACK;
		1087
		1088	FREETMPS; LEAVE;
		1089	}
		1090	break;
		1091	}
		1092
788	return sv;	1093	return sv;
789		1094
790	AV *av = newAV ();	1095	fail:
791	av_push (av, newSVuv (tag));	1096	SvREFCNT_dec (sv);
792	av_push (av, sv);	1097	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1098	}
795		1099
796	static SV *	1100	static SV *
797	decode_sv (dec_t *dec)	1101	decode_sv (dec_t *dec)
798	{	1102	{
799	WANT (1);	1103	WANT (1);
800		1104
801	switch (*dec->cur >> 5)	1105	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1106	{
803	case 0: // unsigned int	1107	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1108	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1109	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1110	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1111	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1112	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1113	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1114
811	return decode_str (dec, 1);	1115	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)	1116	switch (*dec->cur++ & MINOR_MASK)
820	{	1117	{
821	case 20:	1118	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1119	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1120	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1121	#endif
825	return newSVsv (cbor_false);	1122	return newSVsv (types_false);
826	case 21:	1123	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1124	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1125	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1126	#endif
830	return newSVsv (cbor_true);	1127	return newSVsv (types_true);
831	case 22:	1128	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1129	return newSVsv (&PL_sv_undef);
		1130	case SIMPLE_UNDEF:
		1131	#if CBOR_SLOW
		1132	types_error = get_bool ("Types::Serialiser::error");
		1133	#endif
		1134	return newSVsv (types_error);
833		1135
834	case 25:	1136	case MISC_FLOAT16:
835	{	1137	{
836	WANT (2);	1138	WANT (2);
837		1139
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1140	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1141	dec->cur += 2;
840		1142
841	return newSVnv (ecb_binary16_to_float (fp));	1143	return newSVnv (ecb_binary16_to_float (fp));
842	}	1144	}
843		1145
844	case 26:	1146	case MISC_FLOAT32:
845	{	1147	{
846	uint32_t fp;	1148	uint32_t fp;
847	WANT (4);	1149	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1150	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1151	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1154	fp = ecb_bswap32 (fp);
853		1155
854	return newSVnv (ecb_binary32_to_float (fp));	1156	return newSVnv (ecb_binary32_to_float (fp));
855	}	1157	}
856		1158
857	case 27:	1159	case MISC_FLOAT64:
858	{	1160	{
859	uint64_t fp;	1161	uint64_t fp;
860	WANT (8);	1162	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1163	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1164	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1167	fp = ecb_bswap64 (fp);
866		1168
867	return newSVnv (ecb_binary64_to_double (fp));	1169	return newSVnv (ecb_binary64_to_double (fp));
868	}	1170	}
869		1171
870	// 0..19 unassigned	1172	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1173	// 24 reserved + unassigned simple (reserved values are not encodable)
		1174	// 28-30 unassigned misc
		1175	// 31 break code
872	default:	1176	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1177	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1178	}
875		1179
876	break;	1180	break;
877	}	1181	}
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		1182
935	fail:	1183	fail:
936	return &PL_sv_undef;	1184	return &PL_sv_undef;
937	}	1185	}
938		1186
939	static SV *	1187	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1188	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1189	{
942	dec_t dec;	1190	dec_t dec = { 0 };
943	SV *sv;	1191	SV *sv;
		1192	STRLEN len;
		1193	char *data = SvPVbyte (string, len);
944		1194
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)	1195	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",	1196	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);	1197	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1198
980	dec.cbor = *cbor;	1199	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1200	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1201	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		1202
989	sv = decode_sv (&dec);	1203	sv = decode_sv (&dec);
990		1204
991	if (offset_return)	1205	if (offset_return)
992	*offset_return = dec.cur;	1206	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1209	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1210	dec.err = "garbage after CBOR object";
997		1211
998	if (dec.err)	1212	if (dec.err)
999	{	1213	{
		1214	if (dec.shareable)
		1215	{
		1216	// need to break cyclic links, which whould all be in shareable
		1217	int i;
		1218	SV **svp;
		1219
		1220	for (i = av_len (dec.shareable) + 1; i--; )
		1221	if ((svp = av_fetch (dec.shareable, i, 0)))
		1222	sv_setsv (*svp, &PL_sv_undef);
		1223	}
		1224
1000	SvREFCNT_dec (sv);	1225	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1226	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1227	}
1003		1228
1004	sv = sv_2mortal (sv);	1229	sv = sv_2mortal (sv);
1005		1230
1006	return sv;	1231	return sv;
1007	}	1232	}
1008		1233
		1234	/////////////////////////////////////////////////////////////////////////////
		1235	// incremental parser
		1236
		1237	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1238
		1239	// returns 0 for notyet, 1 for success or error
		1240	static int
		1241	incr_parse (CBOR *self, SV *cborstr)
		1242	{
		1243	STRLEN cur;
		1244	SvPV (cborstr, cur);
		1245
		1246	while (ecb_expect_true (self->incr_need <= cur))
		1247	{
		1248	// table of integer count bytes
		1249	static I8 incr_len[MINOR_MASK + 1] = {
		1250	0, 0, 0, 0, 0, 0, 0, 0,
		1251	0, 0, 0, 0, 0, 0, 0, 0,
		1252	0, 0, 0, 0, 0, 0, 0, 0,
		1253	1, 2, 4, 8,-1,-1,-1,-2
		1254	};
		1255
		1256	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1257	U8 m = *p & MINOR_MASK;
		1258	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1259	I8 ilen = incr_len[m];
		1260
		1261	self->incr_need = self->incr_pos + 1;
		1262
		1263	if (ecb_expect_false (ilen < 0))
		1264	{
		1265	if (m != MINOR_INDEF)
		1266	return 1; // error
		1267
		1268	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1269	{
		1270	if (count >= 0)
		1271	return 1; // error
		1272
		1273	count = 1;
		1274	}
		1275	else
		1276	{
		1277	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1278	count = -1;
		1279	}
		1280	}
		1281	else
		1282	{
		1283	self->incr_need += ilen;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	int major = *p >> MAJOR_SHIFT;
		1288
		1289	switch (major)
		1290	{
		1291	case MAJOR_TAG >> MAJOR_SHIFT:
		1292	++count; // tags merely prefix another value
		1293	break;
		1294
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1298	case MAJOR_MAP >> MAJOR_SHIFT:
		1299	{
		1300	UV len;
		1301
		1302	if (ecb_expect_false (ilen))
		1303	{
		1304	len = 0;
		1305
		1306	do {
		1307	len = (len << 8) | *++p;
		1308	} while (--ilen);
		1309	}
		1310	else
		1311	len = m;
		1312
		1313	switch (major)
		1314	{
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	self->incr_need += len;
		1318	if (ecb_expect_false (self->incr_need > cur))
		1319	return 0;
		1320
		1321	break;
		1322
		1323	case MAJOR_MAP >> MAJOR_SHIFT:
		1324	len <<= 1;
		1325	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1326	if (len)
		1327	{
		1328	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1329	count = len + 1;
		1330	}
		1331	break;
		1332	}
		1333	}
		1334	}
		1335	}
		1336
		1337	self->incr_pos = self->incr_need;
		1338
		1339	if (count > 0)
		1340	{
		1341	while (!--count)
		1342	{
		1343	if (!AvFILLp (self->incr_count))
		1344	return 1; // done
		1345
		1346	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1347	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1348	}
		1349
		1350	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1351	}
		1352	}
		1353
		1354	return 0;
		1355	}
		1356
		1357
1009	/////////////////////////////////////////////////////////////////////////////	1358	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1359	// XS interface functions
1011		1360
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1361	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1362
1014	BOOT:	1363	BOOT:
1015	{	1364	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1365	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1366	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1367
1019	cbor_true = get_bool ("CBOR::XS::true");	1368	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1369	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1370
		1371	types_true = get_bool ("Types::Serialiser::true" );
		1372	types_false = get_bool ("Types::Serialiser::false");
		1373	types_error = get_bool ("Types::Serialiser::error");
		1374
		1375	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1376
		1377	sv_cbor = newSVpv ("CBOR", 0);
		1378	SvREADONLY_on (sv_cbor);
1021	}	1379	}
1022		1380
1023	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
1024		1382
1025	void CLONE (...)	1383	void CLONE (...)
1026	CODE:	1384	CODE:
1027	cbor_stash = 0;	1385	cbor_stash = 0;
		1386	cbor_tagged_stash = 0;
		1387	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1388	types_boolean_stash = 0;
1029		1389
1030	void new (char *klass)	1390	void new (char *klass)
1031	PPCODE:	1391	PPCODE:
1032	{	1392	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1393	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1401
1042	void shrink (CBOR *self, int enable = 1)	1402	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1403	ALIAS:
1044	shrink = F_SHRINK	1404	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1405	allow_unknown = F_ALLOW_UNKNOWN
		1406	allow_sharing = F_ALLOW_SHARING
		1407	allow_cycles = F_ALLOW_CYCLES
		1408	pack_strings = F_PACK_STRINGS
		1409	utf8_strings = F_UTF8_STRINGS
		1410	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1411	PPCODE:
1047	{	1412	{
1048	if (enable)	1413	if (enable)
1049	self->flags |= ix;	1414	self->flags |= ix;
1050	else	1415	else
…		…
1055		1420
1056	void get_shrink (CBOR *self)	1421	void get_shrink (CBOR *self)
1057	ALIAS:	1422	ALIAS:
1058	get_shrink = F_SHRINK	1423	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1424	get_allow_unknown = F_ALLOW_UNKNOWN
		1425	get_allow_sharing = F_ALLOW_SHARING
		1426	get_allow_cycles = F_ALLOW_CYCLES
		1427	get_pack_strings = F_PACK_STRINGS
		1428	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1429	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1430	XPUSHs (boolSV (self->flags & ix));
1062		1431
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1432	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1433	PPCODE:
…		…
1080	CODE:	1449	CODE:
1081	RETVAL = self->max_size;	1450	RETVAL = self->max_size;
1082	OUTPUT:	1451	OUTPUT:
1083	RETVAL	1452	RETVAL
1084		1453
1085	#if 0 //TODO	1454	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1455	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1456	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1457	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1458	XPUSHs (ST (0));
1094	}
1095		1459
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1460	SV *get_filter (CBOR *self)
1097	PPCODE:	1461	CODE:
1098	{	1462	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1463	OUTPUT:
1100	self->cb_sk_object = newHV ();	1464	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		1465
1120	void encode (CBOR *self, SV *scalar)	1466	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1467	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1468	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1469	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1482	EXTEND (SP, 2);
1137	PUSHs (sv);	1483	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1484	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1485	}
1140		1486
		1487	void incr_parse (CBOR *self, SV *cborstr)
		1488	ALIAS:
		1489	incr_parse_multiple = 1
		1490	PPCODE:
		1491	{
		1492	if (SvUTF8 (cborstr))
		1493	sv_utf8_downgrade (cborstr, 0);
		1494
		1495	if (!self->incr_count)
		1496	{
		1497	self->incr_count = newAV ();
		1498	self->incr_pos = 0;
		1499	self->incr_need = 1;
		1500
		1501	av_push (self->incr_count, newSViv (1));
		1502	}
		1503
		1504	do
		1505	{
		1506	if (!incr_parse (self, cborstr))
		1507	{
		1508	if (self->incr_need > self->max_size && self->max_size)
		1509	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1510	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1511
		1512	break;
		1513	}
		1514
		1515	SV *sv;
		1516	char *offset;
		1517
		1518	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1519	XPUSHs (sv);
		1520
		1521	sv_chop (cborstr, offset);
		1522
		1523	av_clear (self->incr_count);
		1524	av_push (self->incr_count, newSViv (1));
		1525
		1526	self->incr_pos = 0;
		1527	self->incr_need = self->incr_pos + 1;
		1528	}
		1529	while (ix);
		1530	}
		1531
		1532	void incr_reset (CBOR *self)
		1533	CODE:
		1534	{
		1535	SvREFCNT_dec (self->incr_count);
		1536	self->incr_count = 0;
		1537	}
		1538
1141	void DESTROY (CBOR *self)	1539	void DESTROY (CBOR *self)
1142	CODE:	1540	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1541	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1542
1146	PROTOTYPES: ENABLE	1543	PROTOTYPES: ENABLE
1147		1544
1148	void encode_cbor (SV *scalar)	1545	void encode_cbor (SV *scalar)
		1546	ALIAS:
		1547	encode_cbor = 0
		1548	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1549	PPCODE:
1150	{	1550	{
1151	CBOR cbor;	1551	CBOR cbor;
1152	cbor_init (&cbor);	1552	cbor_init (&cbor);
		1553	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1554	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1555	XPUSHs (scalar);
1155	}	1556	}
1156		1557
1157	void decode_cbor (SV *cborstr)	1558	void decode_cbor (SV *cborstr)

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