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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 1.54 by root, Sun Apr 24 20:08:41 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_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
16		108
17	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
18		110
19	#define SB do {	111	#define SB do {
20	#define SE } while (0)	112	#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		113
33	#define IN_RANGE_INC(type,val,beg,end) \	114	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	115	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	116	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		117
…		…
42	#else	123	#else
43	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
45	#endif	126	#endif
46		127
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		130
50	typedef struct {	131	typedef struct {
51	U32 flags;	132	U32 flags;
52	U32 max_depth;	133	U32 max_depth;
53	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
54		136
55	SV *cb_object;	137	// for the incremental parser
56	HV *cb_sk_object;	138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	141	} CBOR;
58		142
59	INLINE void	143	ecb_inline void
60	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
61	{	145	{
62	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	147	cbor->max_depth = 512;
64	}	148	}
65		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
		155	}
		156
66	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	158	// utility functions
68		159
69	INLINE SV *	160	ecb_inline SV *
70	get_bool (const char *name)	161	get_bool (const char *name)
71	{	162	{
72	SV *sv = get_sv (name, 1);	163	SV *sv = get_sv (name, 1);
73		164
74	SvREADONLY_on (sv);	165	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	166	SvREADONLY_on (SvRV (sv));
76		167
77	return sv;	168	return sv;
78	}	169	}
79		170
80	INLINE void	171	ecb_inline void
81	shrink (SV *sv)	172	shrink (SV *sv)
82	{	173	{
83	sv_utf8_downgrade (sv, 1);	174	sv_utf8_downgrade (sv, 1);
84		175
85	if (SvLEN (sv) > SvCUR (sv) + 1)	176	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	182	#endif
92	}	183	}
93	}	184	}
94		185
95	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
96	// fp hell	187	ecb_inline int
97		188	minimum_string_length (UV idx)
98	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
99		200
100	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
101	// encoder	202	// encoder
102		203
103	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
108	SV *sv; // result scalar	209	SV *sv; // result scalar
109	CBOR cbor;	210	CBOR cbor;
110	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
111	} enc_t;	216	} enc_t;
112		217
113	INLINE void	218	ecb_inline void
114	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
115	{	220	{
116	if (expect_false (enc->cur + len >= enc->end))	221	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	222	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	223	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	224	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	225	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	226	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	227	}
123	}	228	}
124		229
125	INLINE void	230	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	231	encode_ch (enc_t *enc, char ch)
127	{	232	{
128	need (enc, 1);	233	need (enc, 1);
129	*enc->cur++ = ch;	234	*enc->cur++ = ch;
130	}	235	}
…		…
132	static void	237	static void
133	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
134	{	239	{
135	need (enc, 9);	240	need (enc, 9);
136		241
137	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
139	else if (len < 0x100)	244	else if (ecb_expect_true (len <= 0xffU))
140	{	245	{
141	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	247	*enc->cur++ = len;
143	}	248	}
144	else if (len < 0x10000)	249	else if (len <= 0xffffU)
145	{	250	{
146	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	253	*enc->cur++ = len;
149	}	254	}
150	else if (len < 0x100000000)	255	else if (len <= 0xffffffffU)
151	{	256	{
152	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	261	*enc->cur++ = len;
157	}	262	}
158	else if (len)	263	else
159	{	264	{
160	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	273	*enc->cur++ = len;
169	}	274	}
170	}	275	}
171		276
172	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	286	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	317	need (enc, len);
177	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
178	enc->cur += len;	319	enc->cur += len;
179	}	320	}
180		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
181	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
182		348
183	static void	349	static void
184	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
185	{	351	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
190		356
191	++enc->depth;	357	++enc->depth;
192		358
193	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		360
		361	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
196	{	363	{
197	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
200		373
201	--enc->depth;	374	--enc->depth;
202	}	375	}
203		376
204	static void	377	static void
…		…
213		386
214	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
216		389
217	if (mg)	390	if (mg)
218	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	392	else
220	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
221		394
222	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
223	{	396	{
224	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
226	else	399	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		401
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	403	}
231		404
232	if (mg)	405	if (mg)
233	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		407
235	--enc->depth;	408	--enc->depth;
236	}	409	}
237		410
238	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
239	static void	412	static void
240	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
241	{	414	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
245	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
246		418
247	if (expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
248	{	420	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	422	? types_boolean_stash
		423	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		424	HV *error_stash = !CBOR_SLOW || types_error_stash
		425	? types_error_stash
		426	: gv_stashpv ("Types::Serialiser::Error", 1);
		427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		428	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		430
253	if (SvSTASH (sv) == stash)	431	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	432
		433	if (stash == boolean_stash)
		434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
		438	else if (stash == error_stash)
		439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
		443	else if (stash == tagged_stash)
		444	{
		445	if (svt != SVt_PVAV)
		446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		447
		448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
		468	}
255	else	469	else
256	{	470	{
257	#if 0 //TODO	471	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	488	// 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)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		490
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	494	SPAGAIN;
274		495
275	// catch this surprisingly common error	496	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	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)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		499
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	500	encode_sv (enc, POPs);
283		501
		502	PUTBACK;
		503
284	FREETMPS; LEAVE;	504	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	}	505	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
294	else	537	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	540	}
300	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	544	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	545	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
324	}	550	}
325		551
326	static void	552	static void
327	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
328	{	554	{
329	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
330		556
331	need (enc, 9);	557	need (enc, 9);
332		558
333	if (expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	561	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
337	{	563	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
339		565
340	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		567
342	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
344		570
345	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
347	}	573	}
348	else	574	else
349	{	575	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
351		577
352	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		579
354	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
356		582
357	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
366		592
367	if (SvPOKp (sv))	593	if (SvPOKp (sv))
368	{	594	{
369	STRLEN len;	595	STRLEN len;
370	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
372	}	598	}
373	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	600	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
376	{	602	{
377	if (SvIsUV (sv))	603	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	607	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	609	}
384	else if (SvROK (sv))	610	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	612	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	616	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	619	}
394		620
395	static SV *	621	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
397	{	623	{
398	enc_t enc;	624	enc_t enc = { 0 };
399		625
400	enc.cbor = *cbor;	626	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		630
406	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
407	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
408		641
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		644
…		…
425	U8 *end; // end of input string	658	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
427	CBOR cbor;	660	CBOR cbor;
428	U32 depth; // recursion depth	661	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
430	} dec_t;	666	} dec_t;
431		667
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		669
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	670	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		671
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	672	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
438		674
439	static UV	675	static UV
440	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
441	{	677	{
442	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
443	{	679	++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		680
449	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
450	WANT (2);	685	WANT (1);
451	dec->cur += 2;	686	dec->cur += 1;
452	return dec->cur[-1];	687	return dec->cur[-1];
453		688	}
454	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
455	WANT (3);	691	WANT (2);
456	dec->cur += 3;	692	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	694	| ((UV)dec->cur[-1]);
459		695	}
460	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
461	WANT (5);	698	WANT (4);
462	dec->cur += 5;	699	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	701	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	702	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	703	| ((UV)dec->cur[-1]);
467		704	}
468	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
469	WANT (9);	707	WANT (8);
470	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
471	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	715	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	716	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	717	| (((UV)dec->cur[-5]) << 32)
		718	#endif
475	| (((UV)dec->cur[-4]) << 24)	719	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	720	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	721	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	722	| ((UV)dec->cur[-1]);
479		723	}
480	default:	724	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		726
484	fail:	727	fail:
485	return 0;	728	return 0;
486	}	729	}
487		730
…		…
492	{	735	{
493	AV *av = newAV ();	736	AV *av = newAV ();
494		737
495	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
496		739
497	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	741	{
499	++dec->cur;	742	++dec->cur;
500		743
501	for (;;)	744	for (;;)
502	{	745	{
503	WANT (1);	746	WANT (1);
504		747
505	if (*dec->cur == (0xe0 | 31))	748	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	749	{
507	++dec->cur;	750	++dec->cur;
508	break;	751	break;
509	}	752	}
510		753
…		…
513	}	756	}
514	else	757	else
515	{	758	{
516	int i, len = decode_uint (dec);	759	int i, len = decode_uint (dec);
517		760
		761	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);	762	av_fill (av, len - 1);
519		763
520	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
522	}	766	}
…		…
528	SvREFCNT_dec (av);	772	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	773	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	774	return &PL_sv_undef;
531	}	775	}
532		776
		777	static void
		778	decode_he (dec_t *dec, HV *hv)
		779	{
		780	// for speed reasons, we specialcase single-string
		781	// byte or utf-8 strings as keys, but only when !stringref
		782
		783	if (ecb_expect_true (!dec->stringref))
		784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		785	{
		786	I32 len = decode_uint (dec);
		787	char *key = (char *)dec->cur;
		788
		789	WANT (len);
		790	dec->cur += len;
		791
		792	hv_store (hv, key, len, decode_sv (dec), 0);
		793
		794	return;
		795	}
		796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		797	{
		798	I32 len = decode_uint (dec);
		799	char *key = (char *)dec->cur;
		800
		801	WANT (len);
		802	dec->cur += len;
		803
		804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		807
		808	hv_store (hv, key, -len, decode_sv (dec), 0);
		809
		810	return;
		811	}
		812
		813	SV *k = decode_sv (dec);
		814	SV *v = decode_sv (dec);
		815
		816	hv_store_ent (hv, k, v, 0);
		817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
		821	}
		822
533	static SV *	823	static SV *
534	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
535	{	825	{
536	HV *hv = newHV ();	826	HV *hv = newHV ();
537		827
538	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
539		829
540	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	831	{
542	++dec->cur;	832	++dec->cur;
543		833
544	for (;;)	834	for (;;)
545	{	835	{
546	WANT (1);	836	WANT (1);
547		837
548	if (*dec->cur == (0xe0 | 31))	838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	839	{
550	++dec->cur;	840	++dec->cur;
551	break;	841	break;
552	}	842	}
553		843
554	SV *k = decode_sv (dec);	844	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	845	}
559	}	846	}
560	else	847	else
561	{	848	{
562	int len = decode_uint (dec);	849	int pairs = decode_uint (dec);
563		850
564	while (len--)	851	while (pairs--)
565	{	852	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	}	853	}
572		854
573	DEC_DEC_DEPTH;	855	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	856	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		857
731	fail:	858	fail:
732	SvREFCNT_dec (hv);	859	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	860	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	861	return &PL_sv_undef;
735	}	862	}
736		863
737	static SV *	864	static SV *
738	decode_str (dec_t *dec, int utf8)	865	decode_str (dec_t *dec, int utf8)
739	{	866	{
740	SV *sv;	867	SV *sv = 0;
741		868
742	if ((*dec->cur & 31) == 31)	869	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	870	{
		871	// indefinite length strings
744	++dec->cur;	872	++dec->cur;
745		873
		874	U8 major = *dec->cur & MAJOR_MISC;
		875
746	sv = newSVpvn ("", 0);	876	sv = newSVpvn ("", 0);
747		877
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	878	for (;;)
750	{	879	{
751	WANT (1);	880	WANT (1);
752		881
753	if (*dec->cur == (0xe0 | 31))	882	if ((*dec->cur - major) > LENGTH_EXT8)
		883	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	884	{
755	++dec->cur;	885	++dec->cur;
756	break;	886	break;
757	}	887	}
		888	else
		889	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		890
759	SV *sv2 = decode_sv (dec);	891	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	892
		893	WANT (len);
		894	sv_catpvn (sv, dec->cur, len);
		895	dec->cur += len;
761	}	896	}
762	}	897	}
763	else	898	else
764	{	899	{
765	STRLEN len = decode_uint (dec);	900	STRLEN len = decode_uint (dec);
766		901
767	WANT (len);	902	WANT (len);
768	sv = newSVpvn (dec->cur, len);	903	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	904	dec->cur += len;
		905
		906	if (ecb_expect_false (dec->stringref)
		907	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		908	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	909	}
771		910
772	if (utf8)	911	if (utf8)
		912	{
		913	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		914	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		915	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		916
773	SvUTF8_on (sv);	917	SvUTF8_on (sv);
		918	}
774		919
775	return sv;	920	return sv;
776		921
777	fail:	922	fail:
		923	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	924	return &PL_sv_undef;
779	}	925	}
780		926
781	static SV *	927	static SV *
782	decode_tagged (dec_t *dec)	928	decode_tagged (dec_t *dec)
783	{	929	{
		930	SV *sv = 0;
784	UV tag = decode_uint (dec);	931	UV tag = decode_uint (dec);
		932
		933	WANT (1);
		934
		935	switch (tag)
		936	{
		937	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	938	sv = decode_sv (dec);
		939	break;
786		940
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	941	case CBOR_TAG_INDIRECTION:
		942	sv = newRV_noinc (decode_sv (dec));
		943	break;
		944
		945	case CBOR_TAG_STRINGREF_NAMESPACE:
		946	{
		947	ENTER; SAVETMPS;
		948
		949	SAVESPTR (dec->stringref);
		950	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		951
		952	sv = decode_sv (dec);
		953
		954	FREETMPS; LEAVE;
		955	}
		956	break;
		957
		958	case CBOR_TAG_STRINGREF:
		959	{
		960	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		961	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		962
		963	UV idx = decode_uint (dec);
		964
		965	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		966	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		967
		968	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		969	}
		970	break;
		971
		972	case CBOR_TAG_VALUE_SHAREABLE:
		973	{
		974	if (ecb_expect_false (!dec->shareable))
		975	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		976
		977	if (dec->cbor.flags & F_ALLOW_CYCLES)
		978	{
		979	sv = newSV (0);
		980	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		981
		982	SV *osv = decode_sv (dec);
		983	sv_setsv (sv, osv);
		984	SvREFCNT_dec_NN (osv);
		985	}
		986	else
		987	{
		988	av_push (dec->shareable, &PL_sv_undef);
		989	int idx = AvFILLp (dec->shareable);
		990	sv = decode_sv (dec);
		991	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		992	}
		993	}
		994	break;
		995
		996	case CBOR_TAG_VALUE_SHAREDREF:
		997	{
		998	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		999	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1000
		1001	UV idx = decode_uint (dec);
		1002
		1003	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1004	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1005
		1006	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1007
		1008	if (sv == &PL_sv_undef)
		1009	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1010	}
		1011	break;
		1012
		1013	case CBOR_TAG_PERL_OBJECT:
		1014	{
		1015	sv = decode_sv (dec);
		1016
		1017	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1018	ERR ("corrupted CBOR data (non-array perl object)");
		1019
		1020	AV *av = (AV *)SvRV (sv);
		1021	int len = av_len (av) + 1;
		1022	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1023
		1024	if (!stash)
		1025	ERR ("cannot decode perl-object (package does not exist)");
		1026
		1027	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1028
		1029	if (!method)
		1030	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1031
		1032	dSP;
		1033
		1034	ENTER; SAVETMPS;
		1035	PUSHMARK (SP);
		1036	EXTEND (SP, len + 1);
		1037	// we re-bless the reference to get overload and other niceties right
		1038	PUSHs (*av_fetch (av, 0, 1));
		1039	PUSHs (sv_cbor);
		1040
		1041	int i;
		1042
		1043	for (i = 1; i < len; ++i)
		1044	PUSHs (*av_fetch (av, i, 1));
		1045
		1046	PUTBACK;
		1047	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1048	SPAGAIN;
		1049
		1050	if (SvTRUE (ERRSV))
		1051	{
		1052	FREETMPS; LEAVE;
		1053	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1054	}
		1055
		1056	SvREFCNT_dec (sv);
		1057	sv = SvREFCNT_inc (POPs);
		1058
		1059	PUTBACK;
		1060
		1061	FREETMPS; LEAVE;
		1062	}
		1063	break;
		1064
		1065	default:
		1066	{
		1067	sv = decode_sv (dec);
		1068
		1069	dSP;
		1070	ENTER; SAVETMPS;
		1071	SAVESTACK_POS ();
		1072	PUSHMARK (SP);
		1073	EXTEND (SP, 2);
		1074	PUSHs (newSVuv (tag));
		1075	PUSHs (sv);
		1076
		1077	PUTBACK;
		1078	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1079	SPAGAIN;
		1080
		1081	if (SvTRUE (ERRSV))
		1082	{
		1083	FREETMPS; LEAVE;
		1084	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1085	}
		1086
		1087	if (count)
		1088	{
		1089	SvREFCNT_dec (sv);
		1090	sv = SvREFCNT_inc (POPs);
		1091	}
		1092	else
		1093	{
		1094	AV *av = newAV ();
		1095	av_push (av, newSVuv (tag));
		1096	av_push (av, sv);
		1097
		1098	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1099	? cbor_tagged_stash
		1100	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1101	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1102	}
		1103
		1104	PUTBACK;
		1105
		1106	FREETMPS; LEAVE;
		1107	}
		1108	break;
		1109	}
		1110
788	return sv;	1111	return sv;
789		1112
790	AV *av = newAV ();	1113	fail:
791	av_push (av, newSVuv (tag));	1114	SvREFCNT_dec (sv);
792	av_push (av, sv);	1115	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1116	}
795		1117
796	static SV *	1118	static SV *
797	decode_sv (dec_t *dec)	1119	decode_sv (dec_t *dec)
798	{	1120	{
799	WANT (1);	1121	WANT (1);
800		1122
801	switch (*dec->cur >> 5)	1123	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1124	{
803	case 0: // unsigned int	1125	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1126	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1127	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1128	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1129	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1130	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1131	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1132
811	return decode_str (dec, 1);	1133	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)	1134	switch (*dec->cur++ & MINOR_MASK)
820	{	1135	{
821	case 20:	1136	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1137	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1138	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1139	#endif
825	return newSVsv (cbor_false);	1140	return newSVsv (types_false);
826	case 21:	1141	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1142	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1143	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1144	#endif
830	return newSVsv (cbor_true);	1145	return newSVsv (types_true);
831	case 22:	1146	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1147	return newSVsv (&PL_sv_undef);
		1148	case SIMPLE_UNDEF:
		1149	#if CBOR_SLOW
		1150	types_error = get_bool ("Types::Serialiser::error");
		1151	#endif
		1152	return newSVsv (types_error);
833		1153
834	case 25:	1154	case MISC_FLOAT16:
835	{	1155	{
836	WANT (2);	1156	WANT (2);
837		1157
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1158	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1159	dec->cur += 2;
840		1160
841	return newSVnv (ecb_binary16_to_float (fp));	1161	return newSVnv (ecb_binary16_to_float (fp));
842	}	1162	}
843		1163
844	case 26:	1164	case MISC_FLOAT32:
845	{	1165	{
846	uint32_t fp;	1166	uint32_t fp;
847	WANT (4);	1167	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1168	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1169	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1172	fp = ecb_bswap32 (fp);
853		1173
854	return newSVnv (ecb_binary32_to_float (fp));	1174	return newSVnv (ecb_binary32_to_float (fp));
855	}	1175	}
856		1176
857	case 27:	1177	case MISC_FLOAT64:
858	{	1178	{
859	uint64_t fp;	1179	uint64_t fp;
860	WANT (8);	1180	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1181	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1182	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1185	fp = ecb_bswap64 (fp);
866		1186
867	return newSVnv (ecb_binary64_to_double (fp));	1187	return newSVnv (ecb_binary64_to_double (fp));
868	}	1188	}
869		1189
870	// 0..19 unassigned	1190	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1191	// 24 reserved + unassigned simple (reserved values are not encodable)
		1192	// 28-30 unassigned misc
		1193	// 31 break code
872	default:	1194	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1195	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1196	}
875		1197
876	break;	1198	break;
877	}	1199	}
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		1200
935	fail:	1201	fail:
936	return &PL_sv_undef;	1202	return &PL_sv_undef;
937	}	1203	}
938		1204
939	static SV *	1205	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1206	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1207	{
942	dec_t dec;	1208	dec_t dec = { 0 };
943	SV *sv;	1209	SV *sv;
		1210	STRLEN len;
		1211	char *data = SvPVbyte (string, len);
944		1212
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)	1213	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",	1214	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);	1215	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1216
980	dec.cbor = *cbor;	1217	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1218	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1219	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		1220
989	sv = decode_sv (&dec);	1221	sv = decode_sv (&dec);
990		1222
991	if (offset_return)	1223	if (offset_return)
992	*offset_return = dec.cur;	1224	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1227	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1228	dec.err = "garbage after CBOR object";
997		1229
998	if (dec.err)	1230	if (dec.err)
999	{	1231	{
		1232	if (dec.shareable)
		1233	{
		1234	// need to break cyclic links, which whould all be in shareable
		1235	int i;
		1236	SV **svp;
		1237
		1238	for (i = av_len (dec.shareable) + 1; i--; )
		1239	if ((svp = av_fetch (dec.shareable, i, 0)))
		1240	sv_setsv (*svp, &PL_sv_undef);
		1241	}
		1242
1000	SvREFCNT_dec (sv);	1243	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1244	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1245	}
1003		1246
1004	sv = sv_2mortal (sv);	1247	sv = sv_2mortal (sv);
1005		1248
1006	return sv;	1249	return sv;
1007	}	1250	}
1008		1251
		1252	/////////////////////////////////////////////////////////////////////////////
		1253	// incremental parser
		1254
		1255	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1256
		1257	// returns 0 for notyet, 1 for success or error
		1258	static int
		1259	incr_parse (CBOR *self, SV *cborstr)
		1260	{
		1261	STRLEN cur;
		1262	SvPV (cborstr, cur);
		1263
		1264	while (ecb_expect_true (self->incr_need <= cur))
		1265	{
		1266	// table of integer count bytes
		1267	static I8 incr_len[MINOR_MASK + 1] = {
		1268	0, 0, 0, 0, 0, 0, 0, 0,
		1269	0, 0, 0, 0, 0, 0, 0, 0,
		1270	0, 0, 0, 0, 0, 0, 0, 0,
		1271	1, 2, 4, 8,-1,-1,-1,-2
		1272	};
		1273
		1274	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1275	U8 m = *p & MINOR_MASK;
		1276	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1277	I8 ilen = incr_len[m];
		1278
		1279	self->incr_need = self->incr_pos + 1;
		1280
		1281	if (ecb_expect_false (ilen < 0))
		1282	{
		1283	if (m != MINOR_INDEF)
		1284	return 1; // error
		1285
		1286	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1287	{
		1288	if (count >= 0)
		1289	return 1; // error
		1290
		1291	count = 1;
		1292	}
		1293	else
		1294	{
		1295	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1296	count = -1;
		1297	}
		1298	}
		1299	else
		1300	{
		1301	self->incr_need += ilen;
		1302	if (ecb_expect_false (self->incr_need > cur))
		1303	return 0;
		1304
		1305	int major = *p >> MAJOR_SHIFT;
		1306
		1307	switch (major)
		1308	{
		1309	case MAJOR_TAG >> MAJOR_SHIFT:
		1310	++count; // tags merely prefix another value
		1311	break;
		1312
		1313	case MAJOR_BYTES >> MAJOR_SHIFT:
		1314	case MAJOR_TEXT >> MAJOR_SHIFT:
		1315	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1316	case MAJOR_MAP >> MAJOR_SHIFT:
		1317	{
		1318	UV len;
		1319
		1320	if (ecb_expect_false (ilen))
		1321	{
		1322	len = 0;
		1323
		1324	do {
		1325	len = (len << 8) | *++p;
		1326	} while (--ilen);
		1327	}
		1328	else
		1329	len = m;
		1330
		1331	switch (major)
		1332	{
		1333	case MAJOR_BYTES >> MAJOR_SHIFT:
		1334	case MAJOR_TEXT >> MAJOR_SHIFT:
		1335	self->incr_need += len;
		1336	if (ecb_expect_false (self->incr_need > cur))
		1337	return 0;
		1338
		1339	break;
		1340
		1341	case MAJOR_MAP >> MAJOR_SHIFT:
		1342	len <<= 1;
		1343	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1344	if (len)
		1345	{
		1346	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1347	count = len + 1;
		1348	}
		1349	break;
		1350	}
		1351	}
		1352	}
		1353	}
		1354
		1355	self->incr_pos = self->incr_need;
		1356
		1357	if (count > 0)
		1358	{
		1359	while (!--count)
		1360	{
		1361	if (!AvFILLp (self->incr_count))
		1362	return 1; // done
		1363
		1364	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1365	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1366	}
		1367
		1368	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1369	}
		1370	}
		1371
		1372	return 0;
		1373	}
		1374
		1375
1009	/////////////////////////////////////////////////////////////////////////////	1376	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1377	// XS interface functions
1011		1378
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1379	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1380
1014	BOOT:	1381	BOOT:
1015	{	1382	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1383	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1384	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1385
1019	cbor_true = get_bool ("CBOR::XS::true");	1386	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1387	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1388
		1389	types_true = get_bool ("Types::Serialiser::true" );
		1390	types_false = get_bool ("Types::Serialiser::false");
		1391	types_error = get_bool ("Types::Serialiser::error");
		1392
		1393	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1394
		1395	sv_cbor = newSVpv ("CBOR", 0);
		1396	SvREADONLY_on (sv_cbor);
1021	}	1397	}
1022		1398
1023	PROTOTYPES: DISABLE	1399	PROTOTYPES: DISABLE
1024		1400
1025	void CLONE (...)	1401	void CLONE (...)
1026	CODE:	1402	CODE:
1027	cbor_stash = 0;	1403	cbor_stash = 0;
		1404	cbor_tagged_stash = 0;
		1405	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1406	types_boolean_stash = 0;
1029		1407
1030	void new (char *klass)	1408	void new (char *klass)
1031	PPCODE:	1409	PPCODE:
1032	{	1410	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1411	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1419
1042	void shrink (CBOR *self, int enable = 1)	1420	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1421	ALIAS:
1044	shrink = F_SHRINK	1422	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1423	allow_unknown = F_ALLOW_UNKNOWN
		1424	allow_sharing = F_ALLOW_SHARING
		1425	allow_cycles = F_ALLOW_CYCLES
		1426	pack_strings = F_PACK_STRINGS
		1427	text_keys = F_TEXT_KEYS
		1428	text_strings = F_TEXT_STRINGS
		1429	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1430	PPCODE:
1047	{	1431	{
1048	if (enable)	1432	if (enable)
1049	self->flags |= ix;	1433	self->flags |= ix;
1050	else	1434	else
…		…
1055		1439
1056	void get_shrink (CBOR *self)	1440	void get_shrink (CBOR *self)
1057	ALIAS:	1441	ALIAS:
1058	get_shrink = F_SHRINK	1442	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1443	get_allow_unknown = F_ALLOW_UNKNOWN
		1444	get_allow_sharing = F_ALLOW_SHARING
		1445	get_allow_cycles = F_ALLOW_CYCLES
		1446	get_pack_strings = F_PACK_STRINGS
		1447	get_text_keys = F_TEXT_KEYS
		1448	get_text_strings = F_TEXT_STRINGS
		1449	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1450	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1451	XPUSHs (boolSV (self->flags & ix));
1062		1452
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1453	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1454	PPCODE:
…		…
1080	CODE:	1470	CODE:
1081	RETVAL = self->max_size;	1471	RETVAL = self->max_size;
1082	OUTPUT:	1472	OUTPUT:
1083	RETVAL	1473	RETVAL
1084		1474
1085	#if 0 //TODO	1475	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1476	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1477	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1478	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1479	XPUSHs (ST (0));
1094	}
1095		1480
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1481	SV *get_filter (CBOR *self)
1097	PPCODE:	1482	CODE:
1098	{	1483	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1484	OUTPUT:
1100	self->cb_sk_object = newHV ();	1485	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		1486
1120	void encode (CBOR *self, SV *scalar)	1487	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1488	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1489	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1490	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1503	EXTEND (SP, 2);
1137	PUSHs (sv);	1504	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1505	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1506	}
1140		1507
		1508	void incr_parse (CBOR *self, SV *cborstr)
		1509	ALIAS:
		1510	incr_parse_multiple = 1
		1511	PPCODE:
		1512	{
		1513	if (SvUTF8 (cborstr))
		1514	sv_utf8_downgrade (cborstr, 0);
		1515
		1516	if (!self->incr_count)
		1517	{
		1518	self->incr_count = newAV ();
		1519	self->incr_pos = 0;
		1520	self->incr_need = 1;
		1521
		1522	av_push (self->incr_count, newSViv (1));
		1523	}
		1524
		1525	do
		1526	{
		1527	if (!incr_parse (self, cborstr))
		1528	{
		1529	if (self->incr_need > self->max_size && self->max_size)
		1530	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1531	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1532
		1533	break;
		1534	}
		1535
		1536	SV *sv;
		1537	char *offset;
		1538
		1539	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1540	XPUSHs (sv);
		1541
		1542	sv_chop (cborstr, offset);
		1543
		1544	av_clear (self->incr_count);
		1545	av_push (self->incr_count, newSViv (1));
		1546
		1547	self->incr_pos = 0;
		1548	self->incr_need = self->incr_pos + 1;
		1549	}
		1550	while (ix);
		1551	}
		1552
		1553	void incr_reset (CBOR *self)
		1554	CODE:
		1555	{
		1556	SvREFCNT_dec (self->incr_count);
		1557	self->incr_count = 0;
		1558	}
		1559
1141	void DESTROY (CBOR *self)	1560	void DESTROY (CBOR *self)
1142	CODE:	1561	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1562	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1563
1146	PROTOTYPES: ENABLE	1564	PROTOTYPES: ENABLE
1147		1565
1148	void encode_cbor (SV *scalar)	1566	void encode_cbor (SV *scalar)
		1567	ALIAS:
		1568	encode_cbor = 0
		1569	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1570	PPCODE:
1150	{	1571	{
1151	CBOR cbor;	1572	CBOR cbor;
1152	cbor_init (&cbor);	1573	cbor_init (&cbor);
		1574	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1575	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1576	XPUSHs (scalar);
1155	}	1577	}
1156		1578
1157	void decode_cbor (SV *cborstr)	1579	void decode_cbor (SV *cborstr)

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