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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.3 by root, Sat Oct 26 11:08:34 2013 UTC vs.
Revision 1.48 by root, Sun Sep 20 23:25:53 2015 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
16		106
17	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
18		108
19	#define SB do {	109	#define SB do {
20	#define SE } while (0)	110	#define SE } while (0)
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		111
33	#define IN_RANGE_INC(type,val,beg,end) \	112	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	113	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	114	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		115
…		…
42	#else	121	#else
43	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
45	#endif	124	#endif
46		125
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		128
50	typedef struct {	129	typedef struct {
51	U32 flags;	130	U32 flags;
52	U32 max_depth;	131	U32 max_depth;
53	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
54		134
55	SV *cb_object;	135	// for the incremental parser
56	HV *cb_sk_object;	136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	139	} CBOR;
58		140
59	INLINE void	141	ecb_inline void
60	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
61	{	143	{
62	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	145	cbor->max_depth = 512;
64	}	146	}
65		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
		153	}
		154
66	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	156	// utility functions
68		157
69	INLINE SV *	158	ecb_inline SV *
70	get_bool (const char *name)	159	get_bool (const char *name)
71	{	160	{
72	SV *sv = get_sv (name, 1);	161	SV *sv = get_sv (name, 1);
73		162
74	SvREADONLY_on (sv);	163	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	164	SvREADONLY_on (SvRV (sv));
76		165
77	return sv;	166	return sv;
78	}	167	}
79		168
80	INLINE void	169	ecb_inline void
81	shrink (SV *sv)	170	shrink (SV *sv)
82	{	171	{
83	sv_utf8_downgrade (sv, 1);	172	sv_utf8_downgrade (sv, 1);
84		173
85	if (SvLEN (sv) > SvCUR (sv) + 1)	174	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	180	#endif
92	}	181	}
93	}	182	}
94		183
95	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
96	// fp hell	185	ecb_inline int
97		186	minimum_string_length (UV idx)
98	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
99		198
100	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
101	// encoder	200	// encoder
102		201
103	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
108	SV *sv; // result scalar	207	SV *sv; // result scalar
109	CBOR cbor;	208	CBOR cbor;
110	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
111	} enc_t;	214	} enc_t;
112		215
113	INLINE void	216	ecb_inline void
114	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
115	{	218	{
116	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	220	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	225	}
123	}	226	}
124		227
125	INLINE void	228	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
127	{	230	{
128	need (enc, 1);	231	need (enc, 1);
129	*enc->cur++ = ch;	232	*enc->cur++ = ch;
130	}	233	}
…		…
132	static void	235	static void
133	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
134	{	237	{
135	need (enc, 9);	238	need (enc, 9);
136		239
137	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
139	else if (len < 0x100)	242	else if (ecb_expect_true (len <= 0xffU))
140	{	243	{
141	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	245	*enc->cur++ = len;
143	}	246	}
144	else if (len < 0x10000)	247	else if (len <= 0xffffU)
145	{	248	{
146	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	251	*enc->cur++ = len;
149	}	252	}
150	else if (len < 0x100000000)	253	else if (len <= 0xffffffffU)
151	{	254	{
152	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	259	*enc->cur++ = len;
157	}	260	}
158	else if (len)	261	else
159	{	262	{
160	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	271	*enc->cur++ = len;
169	}	272	}
170	}	273	}
171		274
172	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	ecb_inline void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	283	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	285	need (enc, len);
177	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
178	enc->cur += len;	287	enc->cur += len;
179	}	288	}
180		289
		290	static void
		291	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
181	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
182		316
183	static void	317	static void
184	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
185	{	319	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
190		324
191	++enc->depth;	325	++enc->depth;
192		326
193	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		328
		329	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
196	{	331	{
197	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	{
		338	SV *sv = AvARRAY (av)[i];
		339	encode_sv (enc, sv ? sv : &PL_sv_undef);
		340	}
200		341
201	--enc->depth;	342	--enc->depth;
202	}	343	}
203		344
204	static void	345	static void
…		…
213		354
214	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
216		357
217	if (mg)	358	if (mg)
218	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	360	else
220	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
221		362
222	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
223	{	364	{
224	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
226	else	367	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		369
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	370	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	371	}
231		372
232	if (mg)	373	if (mg)
233	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		375
235	--enc->depth;	376	--enc->depth;
236	}	377	}
237		378
238	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
239	static void	380	static void
240	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
241	{	382	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
245	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
246		386
247	if (expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
248	{	388	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	390	? types_boolean_stash
		391	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		392	HV *error_stash = !CBOR_SLOW || types_error_stash
		393	? types_error_stash
		394	: gv_stashpv ("Types::Serialiser::Error", 1);
		395	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		396	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		398
253	if (SvSTASH (sv) == stash)	399	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	400
		401	if (stash == boolean_stash)
		402	{
		403	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		404	return;
		405	}
		406	else if (stash == error_stash)
		407	{
		408	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		409	return;
		410	}
		411	else if (stash == tagged_stash)
		412	{
		413	if (svt != SVt_PVAV)
		414	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		415
		416	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		417	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		418
		419	return;
		420	}
		421	}
		422
		423	if (ecb_expect_false (SvREFCNT (sv) > 1)
		424	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		425	{
		426	if (!enc->shareable)
		427	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		428
		429	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		430
		431	if (SvOK (*svp))
		432	{
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		434	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		435	return;
		436	}
255	else	437	else
256	{	438	{
257	#if 0 //TODO	439	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	440	++enc->shareable_idx;
		441	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		442	}
		443	}
		444
		445	if (ecb_expect_false (SvOBJECT (sv)))
		446	{
		447	HV *stash = SvSTASH (sv);
		448	GV *method;
		449
		450	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	451	{
		452	dSP;
		453
		454	ENTER; SAVETMPS; PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	455	// we re-bless the reference to get overload and other niceties right
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)));	456	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		457
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	458	PUTBACK;
		459	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	460	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	461	SPAGAIN;
274		462
275	// catch this surprisingly common error	463	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	464	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)));	465	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		466
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	467	encode_sv (enc, POPs);
283		468
		469	PUTBACK;
		470
284	FREETMPS; LEAVE;	471	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	}	472	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	473	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	474	{
		475	dSP;
		476
		477	ENTER; SAVETMPS; PUSHMARK (SP);
		478	EXTEND (SP, 2);
		479	// we re-bless the reference to get overload and other niceties right
		480	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		481	PUSHs (sv_cbor);
		482
		483	PUTBACK;
		484	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		485	SPAGAIN;
		486
		487	// catch this surprisingly common error
		488	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		489	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		490
		491	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		492	encode_uint (enc, MAJOR_ARRAY, count + 1);
		493	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		494
		495	while (count)
		496	encode_sv (enc, SP[1 - count--]);
		497
		498	PUTBACK;
		499
		500	FREETMPS; LEAVE;
		501	}
294	else	502	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	503	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	505	}
300	else if (svt == SVt_PVHV)	506	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	507	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	508	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	509	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	510	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	511	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	512	encode_tag (enc, CBOR_TAG_INDIRECTION);
		513	encode_sv (enc, sv);
		514	}
324	}	515	}
325		516
326	static void	517	static void
327	encode_nv (enc_t *enc, SV *sv)	518	encode_nv (enc_t *enc, SV *sv)
328	{	519	{
329	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
330		521
331	need (enc, 9);	522	need (enc, 9);
332		523
333	if (expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	526	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
337	{	528	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
339		530
340	*enc->cur++ = 0xe0 | 26;	531	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		532
342	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
344		535
345	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
347	}	538	}
348	else	539	else
349	{	540	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
351		542
352	*enc->cur++ = 0xe0 | 27;	543	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		544
354	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
356		547
357	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
366		557
367	if (SvPOKp (sv))	558	if (SvPOKp (sv))
368	{	559	{
369	STRLEN len;	560	STRLEN len;
370	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	563	}
373	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	565	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
376	{	567	{
377	if (SvIsUV (sv))	568	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	572	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	574	}
384	else if (SvROK (sv))	575	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	577	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	578	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	580	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	581	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	582	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	584	}
394		585
395	static SV *	586	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	587	encode_cbor (SV *scalar, CBOR *cbor)
397	{	588	{
398	enc_t enc;	589	enc_t enc = { 0 };
399		590
400	enc.cbor = *cbor;	591	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		595
406	SvPOK_only (enc.sv);	596	SvPOK_only (enc.sv);
		597
		598	if (cbor->flags & F_PACK_STRINGS)
		599	{
		600	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		601	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		602	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		603	}
		604
407	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
408		606
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	608	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		609
…		…
425	U8 *end; // end of input string	623	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
427	CBOR cbor;	625	CBOR cbor;
428	U32 depth; // recursion depth	626	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
		628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
430	} dec_t;	631	} dec_t;
431		632
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	633	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		634
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	635	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		636
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	637	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	638	#define DEC_DEC_DEPTH --dec->depth
438		639
439	static UV	640	static UV
440	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
441	{	642	{
442	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
443	{	644	++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		645
449	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
450	WANT (2);	650	WANT (1);
451	dec->cur += 2;	651	dec->cur += 1;
452	return dec->cur[-1];	652	return dec->cur[-1];
453		653	}
454	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
455	WANT (3);	656	WANT (2);
456	dec->cur += 3;	657	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	659	| ((UV)dec->cur[-1]);
459		660	}
460	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
461	WANT (5);	663	WANT (4);
462	dec->cur += 5;	664	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	666	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	667	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	668	| ((UV)dec->cur[-1]);
467		669	}
468	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
469	WANT (9);	672	WANT (8);
470	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
471	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	680	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	681	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	682	| (((UV)dec->cur[-5]) << 32)
		683	#endif
475	| (((UV)dec->cur[-4]) << 24)	684	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	685	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	686	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	687	| ((UV)dec->cur[-1]);
479		688	}
480	default:	689	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		691
484	fail:	692	fail:
485	return 0;	693	return 0;
486	}	694	}
487		695
…		…
492	{	700	{
493	AV *av = newAV ();	701	AV *av = newAV ();
494		702
495	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
496		704
497	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	706	{
499	++dec->cur;	707	++dec->cur;
500		708
501	for (;;)	709	for (;;)
502	{	710	{
503	WANT (1);	711	WANT (1);
504		712
505	if (*dec->cur == (0xe0 | 31))	713	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	714	{
507	++dec->cur;	715	++dec->cur;
508	break;	716	break;
509	}	717	}
510		718
…		…
513	}	721	}
514	else	722	else
515	{	723	{
516	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
517		725
		726	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);	727	av_fill (av, len - 1);
519		728
520	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
522	}	731	}
…		…
528	SvREFCNT_dec (av);	737	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	738	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	739	return &PL_sv_undef;
531	}	740	}
532		741
		742	static void
		743	decode_he (dec_t *dec, HV *hv)
		744	{
		745	// for speed reasons, we specialcase single-string
		746	// byte or utf-8 strings as keys, but only when !stringref
		747
		748	if (ecb_expect_true (!dec->stringref))
		749	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		750	{
		751	I32 len = decode_uint (dec);
		752	char *key = (char *)dec->cur;
		753
		754	dec->cur += len;
		755
		756	hv_store (hv, key, len, decode_sv (dec), 0);
		757
		758	return;
		759	}
		760	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		761	{
		762	I32 len = decode_uint (dec);
		763	char *key = (char *)dec->cur;
		764
		765	dec->cur += len;
		766
		767	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		768	if (!is_utf8_string (key, len))
		769	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		770
		771	hv_store (hv, key, -len, decode_sv (dec), 0);
		772
		773	return;
		774	}
		775
		776	SV *k = decode_sv (dec);
		777	SV *v = decode_sv (dec);
		778
		779	hv_store_ent (hv, k, v, 0);
		780	SvREFCNT_dec (k);
		781
		782	fail:
		783	;
		784	}
		785
533	static SV *	786	static SV *
534	decode_hv (dec_t *dec)	787	decode_hv (dec_t *dec)
535	{	788	{
536	HV *hv = newHV ();	789	HV *hv = newHV ();
537		790
538	DEC_INC_DEPTH;	791	DEC_INC_DEPTH;
539		792
540	if ((*dec->cur & 31) == 31)	793	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	794	{
542	++dec->cur;	795	++dec->cur;
543		796
544	for (;;)	797	for (;;)
545	{	798	{
546	WANT (1);	799	WANT (1);
547		800
548	if (*dec->cur == (0xe0 | 31))	801	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	802	{
550	++dec->cur;	803	++dec->cur;
551	break;	804	break;
552	}	805	}
553		806
554	SV *k = decode_sv (dec);	807	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	808	}
559	}	809	}
560	else	810	else
561	{	811	{
562	int len = decode_uint (dec);	812	int pairs = decode_uint (dec);
563		813
564	while (len--)	814	while (pairs--)
565	{	815	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	}	816	}
572		817
573	DEC_DEC_DEPTH;	818	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	819	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		820
731	fail:	821	fail:
732	SvREFCNT_dec (hv);	822	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	824	return &PL_sv_undef;
735	}	825	}
736		826
737	static SV *	827	static SV *
738	decode_str (dec_t *dec, int utf8)	828	decode_str (dec_t *dec, int utf8)
739	{	829	{
740	SV *sv;	830	SV *sv = 0;
741		831
742	if ((*dec->cur & 31) == 31)	832	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	833	{
		834	// indefinite length strings
744	++dec->cur;	835	++dec->cur;
745		836
		837	U8 major = *dec->cur & MAJOR_MISC;
		838
746	sv = newSVpvn ("", 0);	839	sv = newSVpvn ("", 0);
747		840
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	841	for (;;)
750	{	842	{
751	WANT (1);	843	WANT (1);
752		844
753	if (*dec->cur == (0xe0 | 31))	845	if ((*dec->cur - major) > LENGTH_EXT8)
		846	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	847	{
755	++dec->cur;	848	++dec->cur;
756	break;	849	break;
757	}	850	}
		851	else
		852	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		853
759	SV *sv2 = decode_sv (dec);	854	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	855
		856	WANT (len);
		857	sv_catpvn (sv, dec->cur, len);
		858	dec->cur += len;
761	}	859	}
762	}	860	}
763	else	861	else
764	{	862	{
765	STRLEN len = decode_uint (dec);	863	STRLEN len = decode_uint (dec);
766		864
767	WANT (len);	865	WANT (len);
768	sv = newSVpvn (dec->cur, len);	866	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	867	dec->cur += len;
		868
		869	if (ecb_expect_false (dec->stringref)
		870	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		871	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	872	}
771		873
772	if (utf8)	874	if (utf8)
		875	{
		876	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		877	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		878	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		879
773	SvUTF8_on (sv);	880	SvUTF8_on (sv);
		881	}
774		882
775	return sv;	883	return sv;
776		884
777	fail:	885	fail:
		886	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	887	return &PL_sv_undef;
779	}	888	}
780		889
781	static SV *	890	static SV *
782	decode_tagged (dec_t *dec)	891	decode_tagged (dec_t *dec)
783	{	892	{
		893	SV *sv = 0;
784	UV tag = decode_uint (dec);	894	UV tag = decode_uint (dec);
		895
		896	WANT (1);
		897
		898	switch (tag)
		899	{
		900	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	901	sv = decode_sv (dec);
		902	break;
786		903
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	904	case CBOR_TAG_INDIRECTION:
		905	sv = newRV_noinc (decode_sv (dec));
		906	break;
		907
		908	case CBOR_TAG_STRINGREF_NAMESPACE:
		909	{
		910	ENTER; SAVETMPS;
		911
		912	SAVESPTR (dec->stringref);
		913	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		914
		915	sv = decode_sv (dec);
		916
		917	FREETMPS; LEAVE;
		918	}
		919	break;
		920
		921	case CBOR_TAG_STRINGREF:
		922	{
		923	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		924	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		925
		926	UV idx = decode_uint (dec);
		927
		928	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		929	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		930
		931	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		932	}
		933	break;
		934
		935	case CBOR_TAG_VALUE_SHAREABLE:
		936	{
		937	if (ecb_expect_false (!dec->shareable))
		938	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		939
		940	if (dec->cbor.flags & F_ALLOW_CYCLES)
		941	{
		942	sv = newSV (0);
		943	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		944
		945	SV *osv = decode_sv (dec);
		946	sv_setsv (sv, osv);
		947	SvREFCNT_dec_NN (osv);
		948	}
		949	else
		950	{
		951	av_push (dec->shareable, &PL_sv_undef);
		952	int idx = AvFILLp (dec->shareable);
		953	sv = decode_sv (dec);
		954	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		955	}
		956	}
		957	break;
		958
		959	case CBOR_TAG_VALUE_SHAREDREF:
		960	{
		961	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		962	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		963
		964	UV idx = decode_uint (dec);
		965
		966	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		967	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		968
		969	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		970
		971	if (sv == &PL_sv_undef)
		972	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		973	}
		974	break;
		975
		976	case CBOR_TAG_PERL_OBJECT:
		977	{
		978	sv = decode_sv (dec);
		979
		980	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		981	ERR ("corrupted CBOR data (non-array perl object)");
		982
		983	AV *av = (AV *)SvRV (sv);
		984	int len = av_len (av) + 1;
		985	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		986
		987	if (!stash)
		988	ERR ("cannot decode perl-object (package does not exist)");
		989
		990	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		991
		992	if (!method)
		993	ERR ("cannot decode perl-object (package does not have a THAW method)");
		994
		995	dSP;
		996
		997	ENTER; SAVETMPS; PUSHMARK (SP);
		998	EXTEND (SP, len + 1);
		999	// we re-bless the reference to get overload and other niceties right
		1000	PUSHs (*av_fetch (av, 0, 1));
		1001	PUSHs (sv_cbor);
		1002
		1003	int i;
		1004
		1005	for (i = 1; i < len; ++i)
		1006	PUSHs (*av_fetch (av, i, 1));
		1007
		1008	PUTBACK;
		1009	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1010	SPAGAIN;
		1011
		1012	if (SvTRUE (ERRSV))
		1013	{
		1014	FREETMPS; LEAVE;
		1015	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1016	}
		1017
		1018	SvREFCNT_dec (sv);
		1019	sv = SvREFCNT_inc (POPs);
		1020
		1021	PUTBACK;
		1022
		1023	FREETMPS; LEAVE;
		1024	}
		1025	break;
		1026
		1027	default:
		1028	{
		1029	sv = decode_sv (dec);
		1030
		1031	dSP;
		1032	ENTER; SAVETMPS; PUSHMARK (SP);
		1033	EXTEND (SP, 2);
		1034	PUSHs (newSVuv (tag));
		1035	PUSHs (sv);
		1036
		1037	PUTBACK;
		1038	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1039	SPAGAIN;
		1040
		1041	if (SvTRUE (ERRSV))
		1042	{
		1043	FREETMPS; LEAVE;
		1044	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1045	}
		1046
		1047	if (count)
		1048	{
		1049	SvREFCNT_dec (sv);
		1050	sv = SvREFCNT_inc (POPs);
		1051	}
		1052	else
		1053	{
		1054	AV *av = newAV ();
		1055	av_push (av, newSVuv (tag));
		1056	av_push (av, sv);
		1057
		1058	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1059	? cbor_tagged_stash
		1060	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1061	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1062	}
		1063
		1064	PUTBACK;
		1065
		1066	FREETMPS; LEAVE;
		1067	}
		1068	break;
		1069	}
		1070
788	return sv;	1071	return sv;
789		1072
790	AV *av = newAV ();	1073	fail:
791	av_push (av, newSVuv (tag));	1074	SvREFCNT_dec (sv);
792	av_push (av, sv);	1075	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1076	}
795		1077
796	static SV *	1078	static SV *
797	decode_sv (dec_t *dec)	1079	decode_sv (dec_t *dec)
798	{	1080	{
799	WANT (1);	1081	WANT (1);
800		1082
801	switch (*dec->cur >> 5)	1083	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1084	{
803	case 0: // unsigned int	1085	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1086	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1087	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1088	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1089	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1090	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1091	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1092
811	return decode_str (dec, 1);	1093	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)	1094	switch (*dec->cur++ & MINOR_MASK)
820	{	1095	{
821	case 20:	1096	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1097	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1098	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1099	#endif
825	return newSVsv (cbor_false);	1100	return newSVsv (types_false);
826	case 21:	1101	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1102	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1103	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1104	#endif
830	return newSVsv (cbor_true);	1105	return newSVsv (types_true);
831	case 22:	1106	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1107	return newSVsv (&PL_sv_undef);
		1108	case SIMPLE_UNDEF:
		1109	#if CBOR_SLOW
		1110	types_error = get_bool ("Types::Serialiser::error");
		1111	#endif
		1112	return newSVsv (types_error);
833		1113
834	case 25:	1114	case MISC_FLOAT16:
835	{	1115	{
836	WANT (2);	1116	WANT (2);
837		1117
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1118	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1119	dec->cur += 2;
840		1120
841	return newSVnv (ecb_binary16_to_float (fp));	1121	return newSVnv (ecb_binary16_to_float (fp));
842	}	1122	}
843		1123
844	case 26:	1124	case MISC_FLOAT32:
845	{	1125	{
846	uint32_t fp;	1126	uint32_t fp;
847	WANT (4);	1127	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1128	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1129	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1132	fp = ecb_bswap32 (fp);
853		1133
854	return newSVnv (ecb_binary32_to_float (fp));	1134	return newSVnv (ecb_binary32_to_float (fp));
855	}	1135	}
856		1136
857	case 27:	1137	case MISC_FLOAT64:
858	{	1138	{
859	uint64_t fp;	1139	uint64_t fp;
860	WANT (8);	1140	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1141	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1142	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1145	fp = ecb_bswap64 (fp);
866		1146
867	return newSVnv (ecb_binary64_to_double (fp));	1147	return newSVnv (ecb_binary64_to_double (fp));
868	}	1148	}
869		1149
870	// 0..19 unassigned	1150	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1151	// 24 reserved + unassigned simple (reserved values are not encodable)
		1152	// 28-30 unassigned misc
		1153	// 31 break code
872	default:	1154	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1155	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1156	}
875		1157
876	break;	1158	break;
877	}	1159	}
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		1160
935	fail:	1161	fail:
936	return &PL_sv_undef;	1162	return &PL_sv_undef;
937	}	1163	}
938		1164
939	static SV *	1165	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1166	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1167	{
942	dec_t dec;	1168	dec_t dec = { 0 };
943	SV *sv;	1169	SV *sv;
		1170	STRLEN len;
		1171	char *data = SvPVbyte (string, len);
944		1172
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)	1173	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",	1174	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);	1175	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1176
980	dec.cbor = *cbor;	1177	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1178	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1179	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		1180
989	sv = decode_sv (&dec);	1181	sv = decode_sv (&dec);
990		1182
991	if (offset_return)	1183	if (offset_return)
992	*offset_return = dec.cur;	1184	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1187	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1188	dec.err = "garbage after CBOR object";
997		1189
998	if (dec.err)	1190	if (dec.err)
999	{	1191	{
		1192	if (dec.shareable)
		1193	{
		1194	// need to break cyclic links, which whould all be in shareable
		1195	int i;
		1196	SV **svp;
		1197
		1198	for (i = av_len (dec.shareable) + 1; i--; )
		1199	if ((svp = av_fetch (dec.shareable, i, 0)))
		1200	sv_setsv (*svp, &PL_sv_undef);
		1201	}
		1202
1000	SvREFCNT_dec (sv);	1203	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1204	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1205	}
1003		1206
1004	sv = sv_2mortal (sv);	1207	sv = sv_2mortal (sv);
1005		1208
1006	return sv;	1209	return sv;
1007	}	1210	}
1008		1211
		1212	/////////////////////////////////////////////////////////////////////////////
		1213	// incremental parser
		1214
		1215	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1216
		1217	// returns 0 for notyet, 1 for success or error
		1218	static int
		1219	incr_parse (CBOR *self, SV *cborstr)
		1220	{
		1221	STRLEN cur;
		1222	SvPV (cborstr, cur);
		1223
		1224	while (ecb_expect_true (self->incr_need <= cur))
		1225	{
		1226	// table of integer count bytes
		1227	static I8 incr_len[MINOR_MASK + 1] = {
		1228	0, 0, 0, 0, 0, 0, 0, 0,
		1229	0, 0, 0, 0, 0, 0, 0, 0,
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	1, 2, 4, 8,-1,-1,-1,-2
		1232	};
		1233
		1234	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1235	U8 m = *p & MINOR_MASK;
		1236	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1237	I8 ilen = incr_len[m];
		1238
		1239	self->incr_need = self->incr_pos + 1;
		1240
		1241	if (ecb_expect_false (ilen < 0))
		1242	{
		1243	if (m != MINOR_INDEF)
		1244	return 1; // error
		1245
		1246	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1247	{
		1248	if (count >= 0)
		1249	return 1; // error
		1250
		1251	count = 1;
		1252	}
		1253	else
		1254	{
		1255	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1256	count = -1;
		1257	}
		1258	}
		1259	else
		1260	{
		1261	self->incr_need += ilen;
		1262	if (ecb_expect_false (self->incr_need > cur))
		1263	return 0;
		1264
		1265	int major = *p >> MAJOR_SHIFT;
		1266
		1267	switch (major)
		1268	{
		1269	case MAJOR_TAG >> MAJOR_SHIFT:
		1270	++count; // tags merely prefix another value
		1271	break;
		1272
		1273	case MAJOR_BYTES >> MAJOR_SHIFT:
		1274	case MAJOR_TEXT >> MAJOR_SHIFT:
		1275	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1276	case MAJOR_MAP >> MAJOR_SHIFT:
		1277	{
		1278	UV len;
		1279
		1280	if (ecb_expect_false (ilen))
		1281	{
		1282	len = 0;
		1283
		1284	do {
		1285	len = (len << 8) | *++p;
		1286	} while (--ilen);
		1287	}
		1288	else
		1289	len = m;
		1290
		1291	switch (major)
		1292	{
		1293	case MAJOR_BYTES >> MAJOR_SHIFT:
		1294	case MAJOR_TEXT >> MAJOR_SHIFT:
		1295	self->incr_need += len;
		1296	if (ecb_expect_false (self->incr_need > cur))
		1297	return 0;
		1298
		1299	break;
		1300
		1301	case MAJOR_MAP >> MAJOR_SHIFT:
		1302	len <<= 1;
		1303	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1304	if (len)
		1305	{
		1306	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1307	count = len + 1;
		1308	}
		1309	break;
		1310	}
		1311	}
		1312	}
		1313	}
		1314
		1315	self->incr_pos = self->incr_need;
		1316
		1317	if (count > 0)
		1318	{
		1319	while (!--count)
		1320	{
		1321	if (!AvFILLp (self->incr_count))
		1322	return 1; // done
		1323
		1324	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1325	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1326	}
		1327
		1328	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1329	}
		1330	}
		1331
		1332	return 0;
		1333	}
		1334
		1335
1009	/////////////////////////////////////////////////////////////////////////////	1336	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1337	// XS interface functions
1011		1338
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1339	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1340
1014	BOOT:	1341	BOOT:
1015	{	1342	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1343	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1344	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1345
1019	cbor_true = get_bool ("CBOR::XS::true");	1346	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1347	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1348
		1349	types_true = get_bool ("Types::Serialiser::true" );
		1350	types_false = get_bool ("Types::Serialiser::false");
		1351	types_error = get_bool ("Types::Serialiser::error");
		1352
		1353	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1354
		1355	sv_cbor = newSVpv ("CBOR", 0);
		1356	SvREADONLY_on (sv_cbor);
1021	}	1357	}
1022		1358
1023	PROTOTYPES: DISABLE	1359	PROTOTYPES: DISABLE
1024		1360
1025	void CLONE (...)	1361	void CLONE (...)
1026	CODE:	1362	CODE:
1027	cbor_stash = 0;	1363	cbor_stash = 0;
		1364	cbor_tagged_stash = 0;
		1365	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1366	types_boolean_stash = 0;
1029		1367
1030	void new (char *klass)	1368	void new (char *klass)
1031	PPCODE:	1369	PPCODE:
1032	{	1370	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1371	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1379
1042	void shrink (CBOR *self, int enable = 1)	1380	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1381	ALIAS:
1044	shrink = F_SHRINK	1382	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1383	allow_unknown = F_ALLOW_UNKNOWN
		1384	allow_sharing = F_ALLOW_SHARING
		1385	allow_cycles = F_ALLOW_CYCLES
		1386	pack_strings = F_PACK_STRINGS
		1387	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1388	PPCODE:
1047	{	1389	{
1048	if (enable)	1390	if (enable)
1049	self->flags |= ix;	1391	self->flags |= ix;
1050	else	1392	else
…		…
1055		1397
1056	void get_shrink (CBOR *self)	1398	void get_shrink (CBOR *self)
1057	ALIAS:	1399	ALIAS:
1058	get_shrink = F_SHRINK	1400	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1401	get_allow_unknown = F_ALLOW_UNKNOWN
		1402	get_allow_sharing = F_ALLOW_SHARING
		1403	get_allow_cycles = F_ALLOW_CYCLES
		1404	get_pack_strings = F_PACK_STRINGS
		1405	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1406	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1407	XPUSHs (boolSV (self->flags & ix));
1062		1408
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1409	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1410	PPCODE:
…		…
1080	CODE:	1426	CODE:
1081	RETVAL = self->max_size;	1427	RETVAL = self->max_size;
1082	OUTPUT:	1428	OUTPUT:
1083	RETVAL	1429	RETVAL
1084		1430
1085	#if 0 //TODO	1431	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1432	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1433	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1434	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1435	XPUSHs (ST (0));
1094	}
1095		1436
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1437	SV *get_filter (CBOR *self)
1097	PPCODE:	1438	CODE:
1098	{	1439	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1440	OUTPUT:
1100	self->cb_sk_object = newHV ();	1441	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		1442
1120	void encode (CBOR *self, SV *scalar)	1443	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1444	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1445	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1446	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1459	EXTEND (SP, 2);
1137	PUSHs (sv);	1460	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1461	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1462	}
1140		1463
		1464	void incr_parse (CBOR *self, SV *cborstr)
		1465	ALIAS:
		1466	incr_parse_multiple = 1
		1467	PPCODE:
		1468	{
		1469	if (SvUTF8 (cborstr))
		1470	sv_utf8_downgrade (cborstr, 0);
		1471
		1472	if (!self->incr_count)
		1473	{
		1474	self->incr_count = newAV ();
		1475	self->incr_pos = 0;
		1476	self->incr_need = 1;
		1477
		1478	av_push (self->incr_count, newSViv (1));
		1479	}
		1480
		1481	do
		1482	{
		1483	if (!incr_parse (self, cborstr))
		1484	{
		1485	if (self->incr_need > self->max_size && self->max_size)
		1486	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1487	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1488
		1489	break;
		1490	}
		1491
		1492	SV *sv;
		1493	char *offset;
		1494
		1495	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1496	XPUSHs (sv);
		1497
		1498	sv_chop (cborstr, offset);
		1499
		1500	av_clear (self->incr_count);
		1501	av_push (self->incr_count, newSViv (1));
		1502
		1503	self->incr_pos = 0;
		1504	self->incr_need = self->incr_pos + 1;
		1505	}
		1506	while (ix);
		1507	}
		1508
		1509	void incr_reset (CBOR *self)
		1510	CODE:
		1511	{
		1512	SvREFCNT_dec (self->incr_count);
		1513	self->incr_count = 0;
		1514	}
		1515
1141	void DESTROY (CBOR *self)	1516	void DESTROY (CBOR *self)
1142	CODE:	1517	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1518	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1519
1146	PROTOTYPES: ENABLE	1520	PROTOTYPES: ENABLE
1147		1521
1148	void encode_cbor (SV *scalar)	1522	void encode_cbor (SV *scalar)
		1523	ALIAS:
		1524	encode_cbor = 0
		1525	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1526	PPCODE:
1150	{	1527	{
1151	CBOR cbor;	1528	CBOR cbor;
1152	cbor_init (&cbor);	1529	cbor_init (&cbor);
		1530	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1531	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1532	XPUSHs (scalar);
1155	}	1533	}
1156		1534
1157	void decode_cbor (SV *cborstr)	1535	void decode_cbor (SV *cborstr)

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