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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 1.50 by root, Thu Feb 25 02:29:22 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_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;
		455	PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	456	// 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)));	457	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		458
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	459	PUTBACK;
		460	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	461	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	462	SPAGAIN;
274		463
275	// catch this surprisingly common error	464	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	465	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)));	466	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		467
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	468	encode_sv (enc, POPs);
283		469
		470	PUTBACK;
		471
284	FREETMPS; LEAVE;	472	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	}	473	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	474	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	475	{
		476	dSP;
		477
		478	ENTER; SAVETMPS;
		479	SAVESTACK_POS ();
		480	PUSHMARK (SP);
		481	EXTEND (SP, 2);
		482	// we re-bless the reference to get overload and other niceties right
		483	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		484	PUSHs (sv_cbor);
		485
		486	PUTBACK;
		487	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		488	SPAGAIN;
		489
		490	// catch this surprisingly common error
		491	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		492	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		493
		494	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		495	encode_uint (enc, MAJOR_ARRAY, count + 1);
		496	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		497
		498	while (count)
		499	encode_sv (enc, SP[1 - count--]);
		500
		501	PUTBACK;
		502
		503	FREETMPS; LEAVE;
		504	}
294	else	505	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	506	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	507	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	508	}
300	else if (svt == SVt_PVHV)	509	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	510	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	511	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	512	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	513	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	514	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	515	encode_tag (enc, CBOR_TAG_INDIRECTION);
		516	encode_sv (enc, sv);
		517	}
324	}	518	}
325		519
326	static void	520	static void
327	encode_nv (enc_t *enc, SV *sv)	521	encode_nv (enc_t *enc, SV *sv)
328	{	522	{
329	double nv = SvNVX (sv);	523	double nv = SvNVX (sv);
330		524
331	need (enc, 9);	525	need (enc, 9);
332		526
333	if (expect_false (nv == (U32)nv))	527	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	528	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	529	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	530	else if (ecb_expect_false (nv == (float)nv))
337	{	531	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	532	uint32_t fp = ecb_float_to_binary32 (nv);
339		533
340	*enc->cur++ = 0xe0 | 26;	534	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		535
342	if (!ecb_big_endian ())	536	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	537	fp = ecb_bswap32 (fp);
344		538
345	memcpy (enc->cur, &fp, 4);	539	memcpy (enc->cur, &fp, 4);
…		…
347	}	541	}
348	else	542	else
349	{	543	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	544	uint64_t fp = ecb_double_to_binary64 (nv);
351		545
352	*enc->cur++ = 0xe0 | 27;	546	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		547
354	if (!ecb_big_endian ())	548	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	549	fp = ecb_bswap64 (fp);
356		550
357	memcpy (enc->cur, &fp, 8);	551	memcpy (enc->cur, &fp, 8);
…		…
366		560
367	if (SvPOKp (sv))	561	if (SvPOKp (sv))
368	{	562	{
369	STRLEN len;	563	STRLEN len;
370	char *str = SvPV (sv, len);	564	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	565	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	566	}
373	else if (SvNOKp (sv))	567	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	568	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	569	else if (SvIOKp (sv))
376	{	570	{
377	if (SvIsUV (sv))	571	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	572	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	573	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	574	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	575	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	576	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	577	}
384	else if (SvROK (sv))	578	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	579	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	580	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	581	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	582	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	583	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	584	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	585	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	586	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	587	}
394		588
395	static SV *	589	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	590	encode_cbor (SV *scalar, CBOR *cbor)
397	{	591	{
398	enc_t enc;	592	enc_t enc = { 0 };
399		593
400	enc.cbor = *cbor;	594	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	595	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	596	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	597	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		598
406	SvPOK_only (enc.sv);	599	SvPOK_only (enc.sv);
		600
		601	if (cbor->flags & F_PACK_STRINGS)
		602	{
		603	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		604	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		605	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		606	}
		607
407	encode_sv (&enc, scalar);	608	encode_sv (&enc, scalar);
408		609
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	610	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	611	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		612
…		…
425	U8 *end; // end of input string	626	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	627	const char *err; // parse error, if != 0
427	CBOR cbor;	628	CBOR cbor;
428	U32 depth; // recursion depth	629	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	630	U32 maxdepth; // recursion depth limit
		631	AV *shareable;
		632	AV *stringref;
		633	SV *decode_tagged;
430	} dec_t;	634	} dec_t;
431		635
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	636	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		637
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	638	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		639
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	640	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	641	#define DEC_DEC_DEPTH --dec->depth
438		642
439	static UV	643	static UV
440	decode_uint (dec_t *dec)	644	decode_uint (dec_t *dec)
441	{	645	{
442	switch (*dec->cur & 31)	646	U8 m = *dec->cur & MINOR_MASK;
443	{	647	++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		648
449	case 24:	649	if (ecb_expect_true (m < LENGTH_EXT1))
		650	return m;
		651	else if (ecb_expect_true (m == LENGTH_EXT1))
		652	{
450	WANT (2);	653	WANT (1);
451	dec->cur += 2;	654	dec->cur += 1;
452	return dec->cur[-1];	655	return dec->cur[-1];
453		656	}
454	case 25:	657	else if (ecb_expect_true (m == LENGTH_EXT2))
		658	{
455	WANT (3);	659	WANT (2);
456	dec->cur += 3;	660	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	661	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	662	| ((UV)dec->cur[-1]);
459		663	}
460	case 26:	664	else if (ecb_expect_true (m == LENGTH_EXT4))
		665	{
461	WANT (5);	666	WANT (4);
462	dec->cur += 5;	667	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	668	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	669	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	670	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	671	| ((UV)dec->cur[-1]);
467		672	}
468	case 27:	673	else if (ecb_expect_true (m == LENGTH_EXT8))
		674	{
469	WANT (9);	675	WANT (8);
470	dec->cur += 9;	676	dec->cur += 8;
		677
		678	return
		679	#if UVSIZE < 8
		680	0
		681	#else
471	return (((UV)dec->cur[-8]) << 56)	682	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	683	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	684	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	685	| (((UV)dec->cur[-5]) << 32)
		686	#endif
475	| (((UV)dec->cur[-4]) << 24)	687	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	688	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	689	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	690	| ((UV)dec->cur[-1]);
479		691	}
480	default:	692	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	693	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		694
484	fail:	695	fail:
485	return 0;	696	return 0;
486	}	697	}
487		698
…		…
492	{	703	{
493	AV *av = newAV ();	704	AV *av = newAV ();
494		705
495	DEC_INC_DEPTH;	706	DEC_INC_DEPTH;
496		707
497	if ((*dec->cur & 31) == 31)	708	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	709	{
499	++dec->cur;	710	++dec->cur;
500		711
501	for (;;)	712	for (;;)
502	{	713	{
503	WANT (1);	714	WANT (1);
504		715
505	if (*dec->cur == (0xe0 | 31))	716	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	717	{
507	++dec->cur;	718	++dec->cur;
508	break;	719	break;
509	}	720	}
510		721
…		…
513	}	724	}
514	else	725	else
515	{	726	{
516	int i, len = decode_uint (dec);	727	int i, len = decode_uint (dec);
517		728
		729	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);	730	av_fill (av, len - 1);
519		731
520	for (i = 0; i < len; ++i)	732	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	733	AvARRAY (av)[i] = decode_sv (dec);
522	}	734	}
…		…
528	SvREFCNT_dec (av);	740	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	741	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	742	return &PL_sv_undef;
531	}	743	}
532		744
		745	static void
		746	decode_he (dec_t *dec, HV *hv)
		747	{
		748	// for speed reasons, we specialcase single-string
		749	// byte or utf-8 strings as keys, but only when !stringref
		750
		751	if (ecb_expect_true (!dec->stringref))
		752	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		753	{
		754	I32 len = decode_uint (dec);
		755	char *key = (char *)dec->cur;
		756
		757	WANT (len);
		758	dec->cur += len;
		759
		760	hv_store (hv, key, len, decode_sv (dec), 0);
		761
		762	return;
		763	}
		764	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		765	{
		766	I32 len = decode_uint (dec);
		767	char *key = (char *)dec->cur;
		768
		769	WANT (len);
		770	dec->cur += len;
		771
		772	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		773	if (!is_utf8_string (key, len))
		774	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		775
		776	hv_store (hv, key, -len, decode_sv (dec), 0);
		777
		778	return;
		779	}
		780
		781	SV *k = decode_sv (dec);
		782	SV *v = decode_sv (dec);
		783
		784	hv_store_ent (hv, k, v, 0);
		785	SvREFCNT_dec (k);
		786
		787	fail:
		788	;
		789	}
		790
533	static SV *	791	static SV *
534	decode_hv (dec_t *dec)	792	decode_hv (dec_t *dec)
535	{	793	{
536	HV *hv = newHV ();	794	HV *hv = newHV ();
537		795
538	DEC_INC_DEPTH;	796	DEC_INC_DEPTH;
539		797
540	if ((*dec->cur & 31) == 31)	798	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	799	{
542	++dec->cur;	800	++dec->cur;
543		801
544	for (;;)	802	for (;;)
545	{	803	{
546	WANT (1);	804	WANT (1);
547		805
548	if (*dec->cur == (0xe0 | 31))	806	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	807	{
550	++dec->cur;	808	++dec->cur;
551	break;	809	break;
552	}	810	}
553		811
554	SV *k = decode_sv (dec);	812	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	813	}
559	}	814	}
560	else	815	else
561	{	816	{
562	int len = decode_uint (dec);	817	int pairs = decode_uint (dec);
563		818
564	while (len--)	819	while (pairs--)
565	{	820	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	}	821	}
572		822
573	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	824	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		825
731	fail:	826	fail:
732	SvREFCNT_dec (hv);	827	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	828	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	829	return &PL_sv_undef;
735	}	830	}
736		831
737	static SV *	832	static SV *
738	decode_str (dec_t *dec, int utf8)	833	decode_str (dec_t *dec, int utf8)
739	{	834	{
740	SV *sv;	835	SV *sv = 0;
741		836
742	if ((*dec->cur & 31) == 31)	837	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	838	{
		839	// indefinite length strings
744	++dec->cur;	840	++dec->cur;
745		841
		842	U8 major = *dec->cur & MAJOR_MISC;
		843
746	sv = newSVpvn ("", 0);	844	sv = newSVpvn ("", 0);
747		845
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	846	for (;;)
750	{	847	{
751	WANT (1);	848	WANT (1);
752		849
753	if (*dec->cur == (0xe0 | 31))	850	if ((*dec->cur - major) > LENGTH_EXT8)
		851	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	852	{
755	++dec->cur;	853	++dec->cur;
756	break;	854	break;
757	}	855	}
		856	else
		857	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		858
759	SV *sv2 = decode_sv (dec);	859	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	860
		861	WANT (len);
		862	sv_catpvn (sv, dec->cur, len);
		863	dec->cur += len;
761	}	864	}
762	}	865	}
763	else	866	else
764	{	867	{
765	STRLEN len = decode_uint (dec);	868	STRLEN len = decode_uint (dec);
766		869
767	WANT (len);	870	WANT (len);
768	sv = newSVpvn (dec->cur, len);	871	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	872	dec->cur += len;
		873
		874	if (ecb_expect_false (dec->stringref)
		875	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		876	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	877	}
771		878
772	if (utf8)	879	if (utf8)
		880	{
		881	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		882	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		883	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		884
773	SvUTF8_on (sv);	885	SvUTF8_on (sv);
		886	}
774		887
775	return sv;	888	return sv;
776		889
777	fail:	890	fail:
		891	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	892	return &PL_sv_undef;
779	}	893	}
780		894
781	static SV *	895	static SV *
782	decode_tagged (dec_t *dec)	896	decode_tagged (dec_t *dec)
783	{	897	{
		898	SV *sv = 0;
784	UV tag = decode_uint (dec);	899	UV tag = decode_uint (dec);
		900
		901	WANT (1);
		902
		903	switch (tag)
		904	{
		905	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	906	sv = decode_sv (dec);
		907	break;
786		908
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	909	case CBOR_TAG_INDIRECTION:
		910	sv = newRV_noinc (decode_sv (dec));
		911	break;
		912
		913	case CBOR_TAG_STRINGREF_NAMESPACE:
		914	{
		915	ENTER; SAVETMPS;
		916
		917	SAVESPTR (dec->stringref);
		918	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		919
		920	sv = decode_sv (dec);
		921
		922	FREETMPS; LEAVE;
		923	}
		924	break;
		925
		926	case CBOR_TAG_STRINGREF:
		927	{
		928	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		929	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		930
		931	UV idx = decode_uint (dec);
		932
		933	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		934	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		935
		936	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		937	}
		938	break;
		939
		940	case CBOR_TAG_VALUE_SHAREABLE:
		941	{
		942	if (ecb_expect_false (!dec->shareable))
		943	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		944
		945	if (dec->cbor.flags & F_ALLOW_CYCLES)
		946	{
		947	sv = newSV (0);
		948	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		949
		950	SV *osv = decode_sv (dec);
		951	sv_setsv (sv, osv);
		952	SvREFCNT_dec_NN (osv);
		953	}
		954	else
		955	{
		956	av_push (dec->shareable, &PL_sv_undef);
		957	int idx = AvFILLp (dec->shareable);
		958	sv = decode_sv (dec);
		959	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		960	}
		961	}
		962	break;
		963
		964	case CBOR_TAG_VALUE_SHAREDREF:
		965	{
		966	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		967	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		968
		969	UV idx = decode_uint (dec);
		970
		971	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		972	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		973
		974	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		975
		976	if (sv == &PL_sv_undef)
		977	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		978	}
		979	break;
		980
		981	case CBOR_TAG_PERL_OBJECT:
		982	{
		983	sv = decode_sv (dec);
		984
		985	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		986	ERR ("corrupted CBOR data (non-array perl object)");
		987
		988	AV *av = (AV *)SvRV (sv);
		989	int len = av_len (av) + 1;
		990	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		991
		992	if (!stash)
		993	ERR ("cannot decode perl-object (package does not exist)");
		994
		995	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		996
		997	if (!method)
		998	ERR ("cannot decode perl-object (package does not have a THAW method)");
		999
		1000	dSP;
		1001
		1002	ENTER; SAVETMPS;
		1003	PUSHMARK (SP);
		1004	EXTEND (SP, len + 1);
		1005	// we re-bless the reference to get overload and other niceties right
		1006	PUSHs (*av_fetch (av, 0, 1));
		1007	PUSHs (sv_cbor);
		1008
		1009	int i;
		1010
		1011	for (i = 1; i < len; ++i)
		1012	PUSHs (*av_fetch (av, i, 1));
		1013
		1014	PUTBACK;
		1015	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1016	SPAGAIN;
		1017
		1018	if (SvTRUE (ERRSV))
		1019	{
		1020	FREETMPS; LEAVE;
		1021	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1022	}
		1023
		1024	SvREFCNT_dec (sv);
		1025	sv = SvREFCNT_inc (POPs);
		1026
		1027	PUTBACK;
		1028
		1029	FREETMPS; LEAVE;
		1030	}
		1031	break;
		1032
		1033	default:
		1034	{
		1035	sv = decode_sv (dec);
		1036
		1037	dSP;
		1038	ENTER; SAVETMPS;
		1039	SAVESTACK_POS ();
		1040	PUSHMARK (SP);
		1041	EXTEND (SP, 2);
		1042	PUSHs (newSVuv (tag));
		1043	PUSHs (sv);
		1044
		1045	PUTBACK;
		1046	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1047	SPAGAIN;
		1048
		1049	if (SvTRUE (ERRSV))
		1050	{
		1051	FREETMPS; LEAVE;
		1052	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1053	}
		1054
		1055	if (count)
		1056	{
		1057	SvREFCNT_dec (sv);
		1058	sv = SvREFCNT_inc (POPs);
		1059	}
		1060	else
		1061	{
		1062	AV *av = newAV ();
		1063	av_push (av, newSVuv (tag));
		1064	av_push (av, sv);
		1065
		1066	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1067	? cbor_tagged_stash
		1068	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1069	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1070	}
		1071
		1072	PUTBACK;
		1073
		1074	FREETMPS; LEAVE;
		1075	}
		1076	break;
		1077	}
		1078
788	return sv;	1079	return sv;
789		1080
790	AV *av = newAV ();	1081	fail:
791	av_push (av, newSVuv (tag));	1082	SvREFCNT_dec (sv);
792	av_push (av, sv);	1083	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1084	}
795		1085
796	static SV *	1086	static SV *
797	decode_sv (dec_t *dec)	1087	decode_sv (dec_t *dec)
798	{	1088	{
799	WANT (1);	1089	WANT (1);
800		1090
801	switch (*dec->cur >> 5)	1091	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1092	{
803	case 0: // unsigned int	1093	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1094	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1095	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1096	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1097	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1098	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1099	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1100
811	return decode_str (dec, 1);	1101	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)	1102	switch (*dec->cur++ & MINOR_MASK)
820	{	1103	{
821	case 20:	1104	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1105	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1106	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1107	#endif
825	return newSVsv (cbor_false);	1108	return newSVsv (types_false);
826	case 21:	1109	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1110	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1111	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1112	#endif
830	return newSVsv (cbor_true);	1113	return newSVsv (types_true);
831	case 22:	1114	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1115	return newSVsv (&PL_sv_undef);
		1116	case SIMPLE_UNDEF:
		1117	#if CBOR_SLOW
		1118	types_error = get_bool ("Types::Serialiser::error");
		1119	#endif
		1120	return newSVsv (types_error);
833		1121
834	case 25:	1122	case MISC_FLOAT16:
835	{	1123	{
836	WANT (2);	1124	WANT (2);
837		1125
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1126	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1127	dec->cur += 2;
840		1128
841	return newSVnv (ecb_binary16_to_float (fp));	1129	return newSVnv (ecb_binary16_to_float (fp));
842	}	1130	}
843		1131
844	case 26:	1132	case MISC_FLOAT32:
845	{	1133	{
846	uint32_t fp;	1134	uint32_t fp;
847	WANT (4);	1135	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1136	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1137	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1140	fp = ecb_bswap32 (fp);
853		1141
854	return newSVnv (ecb_binary32_to_float (fp));	1142	return newSVnv (ecb_binary32_to_float (fp));
855	}	1143	}
856		1144
857	case 27:	1145	case MISC_FLOAT64:
858	{	1146	{
859	uint64_t fp;	1147	uint64_t fp;
860	WANT (8);	1148	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1149	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1150	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1153	fp = ecb_bswap64 (fp);
866		1154
867	return newSVnv (ecb_binary64_to_double (fp));	1155	return newSVnv (ecb_binary64_to_double (fp));
868	}	1156	}
869		1157
870	// 0..19 unassigned	1158	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1159	// 24 reserved + unassigned simple (reserved values are not encodable)
		1160	// 28-30 unassigned misc
		1161	// 31 break code
872	default:	1162	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1163	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1164	}
875		1165
876	break;	1166	break;
877	}	1167	}
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		1168
935	fail:	1169	fail:
936	return &PL_sv_undef;	1170	return &PL_sv_undef;
937	}	1171	}
938		1172
939	static SV *	1173	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1174	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1175	{
942	dec_t dec;	1176	dec_t dec = { 0 };
943	SV *sv;	1177	SV *sv;
		1178	STRLEN len;
		1179	char *data = SvPVbyte (string, len);
944		1180
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)	1181	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",	1182	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);	1183	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1184
980	dec.cbor = *cbor;	1185	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1186	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1187	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		1188
989	sv = decode_sv (&dec);	1189	sv = decode_sv (&dec);
990		1190
991	if (offset_return)	1191	if (offset_return)
992	*offset_return = dec.cur;	1192	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1195	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1196	dec.err = "garbage after CBOR object";
997		1197
998	if (dec.err)	1198	if (dec.err)
999	{	1199	{
		1200	if (dec.shareable)
		1201	{
		1202	// need to break cyclic links, which whould all be in shareable
		1203	int i;
		1204	SV **svp;
		1205
		1206	for (i = av_len (dec.shareable) + 1; i--; )
		1207	if ((svp = av_fetch (dec.shareable, i, 0)))
		1208	sv_setsv (*svp, &PL_sv_undef);
		1209	}
		1210
1000	SvREFCNT_dec (sv);	1211	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1212	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1213	}
1003		1214
1004	sv = sv_2mortal (sv);	1215	sv = sv_2mortal (sv);
1005		1216
1006	return sv;	1217	return sv;
1007	}	1218	}
1008		1219
		1220	/////////////////////////////////////////////////////////////////////////////
		1221	// incremental parser
		1222
		1223	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1224
		1225	// returns 0 for notyet, 1 for success or error
		1226	static int
		1227	incr_parse (CBOR *self, SV *cborstr)
		1228	{
		1229	STRLEN cur;
		1230	SvPV (cborstr, cur);
		1231
		1232	while (ecb_expect_true (self->incr_need <= cur))
		1233	{
		1234	// table of integer count bytes
		1235	static I8 incr_len[MINOR_MASK + 1] = {
		1236	0, 0, 0, 0, 0, 0, 0, 0,
		1237	0, 0, 0, 0, 0, 0, 0, 0,
		1238	0, 0, 0, 0, 0, 0, 0, 0,
		1239	1, 2, 4, 8,-1,-1,-1,-2
		1240	};
		1241
		1242	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1243	U8 m = *p & MINOR_MASK;
		1244	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1245	I8 ilen = incr_len[m];
		1246
		1247	self->incr_need = self->incr_pos + 1;
		1248
		1249	if (ecb_expect_false (ilen < 0))
		1250	{
		1251	if (m != MINOR_INDEF)
		1252	return 1; // error
		1253
		1254	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1255	{
		1256	if (count >= 0)
		1257	return 1; // error
		1258
		1259	count = 1;
		1260	}
		1261	else
		1262	{
		1263	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1264	count = -1;
		1265	}
		1266	}
		1267	else
		1268	{
		1269	self->incr_need += ilen;
		1270	if (ecb_expect_false (self->incr_need > cur))
		1271	return 0;
		1272
		1273	int major = *p >> MAJOR_SHIFT;
		1274
		1275	switch (major)
		1276	{
		1277	case MAJOR_TAG >> MAJOR_SHIFT:
		1278	++count; // tags merely prefix another value
		1279	break;
		1280
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1284	case MAJOR_MAP >> MAJOR_SHIFT:
		1285	{
		1286	UV len;
		1287
		1288	if (ecb_expect_false (ilen))
		1289	{
		1290	len = 0;
		1291
		1292	do {
		1293	len = (len << 8) | *++p;
		1294	} while (--ilen);
		1295	}
		1296	else
		1297	len = m;
		1298
		1299	switch (major)
		1300	{
		1301	case MAJOR_BYTES >> MAJOR_SHIFT:
		1302	case MAJOR_TEXT >> MAJOR_SHIFT:
		1303	self->incr_need += len;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	break;
		1308
		1309	case MAJOR_MAP >> MAJOR_SHIFT:
		1310	len <<= 1;
		1311	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1312	if (len)
		1313	{
		1314	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1315	count = len + 1;
		1316	}
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322
		1323	self->incr_pos = self->incr_need;
		1324
		1325	if (count > 0)
		1326	{
		1327	while (!--count)
		1328	{
		1329	if (!AvFILLp (self->incr_count))
		1330	return 1; // done
		1331
		1332	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1333	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1334	}
		1335
		1336	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1337	}
		1338	}
		1339
		1340	return 0;
		1341	}
		1342
		1343
1009	/////////////////////////////////////////////////////////////////////////////	1344	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1345	// XS interface functions
1011		1346
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1347	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1348
1014	BOOT:	1349	BOOT:
1015	{	1350	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1351	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1352	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1353
1019	cbor_true = get_bool ("CBOR::XS::true");	1354	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1355	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1356
		1357	types_true = get_bool ("Types::Serialiser::true" );
		1358	types_false = get_bool ("Types::Serialiser::false");
		1359	types_error = get_bool ("Types::Serialiser::error");
		1360
		1361	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1362
		1363	sv_cbor = newSVpv ("CBOR", 0);
		1364	SvREADONLY_on (sv_cbor);
1021	}	1365	}
1022		1366
1023	PROTOTYPES: DISABLE	1367	PROTOTYPES: DISABLE
1024		1368
1025	void CLONE (...)	1369	void CLONE (...)
1026	CODE:	1370	CODE:
1027	cbor_stash = 0;	1371	cbor_stash = 0;
		1372	cbor_tagged_stash = 0;
		1373	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1374	types_boolean_stash = 0;
1029		1375
1030	void new (char *klass)	1376	void new (char *klass)
1031	PPCODE:	1377	PPCODE:
1032	{	1378	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1379	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1387
1042	void shrink (CBOR *self, int enable = 1)	1388	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1389	ALIAS:
1044	shrink = F_SHRINK	1390	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1391	allow_unknown = F_ALLOW_UNKNOWN
		1392	allow_sharing = F_ALLOW_SHARING
		1393	allow_cycles = F_ALLOW_CYCLES
		1394	pack_strings = F_PACK_STRINGS
		1395	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1396	PPCODE:
1047	{	1397	{
1048	if (enable)	1398	if (enable)
1049	self->flags |= ix;	1399	self->flags |= ix;
1050	else	1400	else
…		…
1055		1405
1056	void get_shrink (CBOR *self)	1406	void get_shrink (CBOR *self)
1057	ALIAS:	1407	ALIAS:
1058	get_shrink = F_SHRINK	1408	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1409	get_allow_unknown = F_ALLOW_UNKNOWN
		1410	get_allow_sharing = F_ALLOW_SHARING
		1411	get_allow_cycles = F_ALLOW_CYCLES
		1412	get_pack_strings = F_PACK_STRINGS
		1413	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1414	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1415	XPUSHs (boolSV (self->flags & ix));
1062		1416
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1417	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1418	PPCODE:
…		…
1080	CODE:	1434	CODE:
1081	RETVAL = self->max_size;	1435	RETVAL = self->max_size;
1082	OUTPUT:	1436	OUTPUT:
1083	RETVAL	1437	RETVAL
1084		1438
1085	#if 0 //TODO	1439	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1440	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1441	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1442	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1443	XPUSHs (ST (0));
1094	}
1095		1444
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1445	SV *get_filter (CBOR *self)
1097	PPCODE:	1446	CODE:
1098	{	1447	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1448	OUTPUT:
1100	self->cb_sk_object = newHV ();	1449	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		1450
1120	void encode (CBOR *self, SV *scalar)	1451	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1452	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1453	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1454	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1467	EXTEND (SP, 2);
1137	PUSHs (sv);	1468	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1469	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1470	}
1140		1471
		1472	void incr_parse (CBOR *self, SV *cborstr)
		1473	ALIAS:
		1474	incr_parse_multiple = 1
		1475	PPCODE:
		1476	{
		1477	if (SvUTF8 (cborstr))
		1478	sv_utf8_downgrade (cborstr, 0);
		1479
		1480	if (!self->incr_count)
		1481	{
		1482	self->incr_count = newAV ();
		1483	self->incr_pos = 0;
		1484	self->incr_need = 1;
		1485
		1486	av_push (self->incr_count, newSViv (1));
		1487	}
		1488
		1489	do
		1490	{
		1491	if (!incr_parse (self, cborstr))
		1492	{
		1493	if (self->incr_need > self->max_size && self->max_size)
		1494	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1495	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1496
		1497	break;
		1498	}
		1499
		1500	SV *sv;
		1501	char *offset;
		1502
		1503	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1504	XPUSHs (sv);
		1505
		1506	sv_chop (cborstr, offset);
		1507
		1508	av_clear (self->incr_count);
		1509	av_push (self->incr_count, newSViv (1));
		1510
		1511	self->incr_pos = 0;
		1512	self->incr_need = self->incr_pos + 1;
		1513	}
		1514	while (ix);
		1515	}
		1516
		1517	void incr_reset (CBOR *self)
		1518	CODE:
		1519	{
		1520	SvREFCNT_dec (self->incr_count);
		1521	self->incr_count = 0;
		1522	}
		1523
1141	void DESTROY (CBOR *self)	1524	void DESTROY (CBOR *self)
1142	CODE:	1525	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1526	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1527
1146	PROTOTYPES: ENABLE	1528	PROTOTYPES: ENABLE
1147		1529
1148	void encode_cbor (SV *scalar)	1530	void encode_cbor (SV *scalar)
		1531	ALIAS:
		1532	encode_cbor = 0
		1533	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1534	PPCODE:
1150	{	1535	{
1151	CBOR cbor;	1536	CBOR cbor;
1152	cbor_init (&cbor);	1537	cbor_init (&cbor);
		1538	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1539	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1540	XPUSHs (scalar);
1155	}	1541	}
1156		1542
1157	void decode_cbor (SV *cborstr)	1543	void decode_cbor (SV *cborstr)

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