ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.2 by root, Sat Oct 26 10:41:12 2013 UTC vs.
Revision 1.60 by root, Sat Nov 26 00:47:02 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
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	15	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	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
17		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
18	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
19	#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_FORBID_OBJECTS 0x00000010UL
		105	#define F_PACK_STRINGS 0x00000020UL
		106	#define F_TEXT_KEYS 0x00000040UL
		107	#define F_TEXT_STRINGS 0x00000080UL
		108	#define F_VALIDATE_UTF8 0x00000100UL
20		109
21	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
22		111
23	#define SB do {	112	#define SB do {
24	#define SE } while (0)	113	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		114
37	#define IN_RANGE_INC(type,val,beg,end) \	115	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	116	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	117	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		118
…		…
46	#else	124	#else
47	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
49	#endif	127	#endif
50		128
51	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	129	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
52	static SV *cbor_true, *cbor_false;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		131
54	typedef struct {	132	typedef struct {
55	U32 flags;	133	U32 flags;
56	U32 max_depth;	134	U32 max_depth;
57	STRLEN max_size;	135	STRLEN max_size;
		136	SV *filter;
58		137
59	SV *cb_object;	138	// for the incremental parser
60	HV *cb_sk_object;	139	STRLEN incr_pos; // the current offset into the text
		140	STRLEN incr_need; // minimum bytes needed to decode
		141	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
61	} CBOR;	142	} CBOR;
62		143
63	INLINE void	144	ecb_inline void
64	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
65	{	146	{
66	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	148	cbor->max_depth = 512;
68	}	149	}
69		150
		151	ecb_inline void
		152	cbor_free (CBOR *cbor)
		153	{
		154	SvREFCNT_dec (cbor->filter);
		155	SvREFCNT_dec (cbor->incr_count);
		156	}
		157
70	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	159	// utility functions
72		160
73	INLINE SV *	161	ecb_inline SV *
74	get_bool (const char *name)	162	get_bool (const char *name)
75	{	163	{
76	SV *sv = get_sv (name, 1);	164	SV *sv = get_sv (name, 1);
77		165
78	SvREADONLY_on (sv);	166	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	167	SvREADONLY_on (SvRV (sv));
80		168
81	return sv;	169	return sv;
82	}	170	}
83		171
84	INLINE void	172	ecb_inline void
85	shrink (SV *sv)	173	shrink (SV *sv)
86	{	174	{
87	sv_utf8_downgrade (sv, 1);	175	sv_utf8_downgrade (sv, 1);
88		176
89	if (SvLEN (sv) > SvCUR (sv) + 1)	177	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	183	#endif
96	}	184	}
97	}	185	}
98		186
99	/////////////////////////////////////////////////////////////////////////////	187	// minimum length of a string to be registered for stringref
100	// fp hell	188	ecb_inline int
101		189	minimum_string_length (UV idx)
102	//TODO	190	{
		191	return idx > 23
		192	? idx > 0xffU
		193	? idx > 0xffffU
		194	? idx > 0xffffffffU
		195	? 11
		196	: 7
		197	: 5
		198	: 4
		199	: 3;
		200	}
103		201
104	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
105	// encoder	203	// encoder
106		204
107	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
112	SV *sv; // result scalar	210	SV *sv; // result scalar
113	CBOR cbor;	211	CBOR cbor;
114	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
115	} enc_t;	217	} enc_t;
116		218
117	INLINE void	219	ecb_inline void
118	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
119	{	221	{
120	if (expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	223	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	228	}
127	}	229	}
128		230
129	INLINE void	231	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	232	encode_ch (enc_t *enc, char ch)
131	{	233	{
132	need (enc, 1);	234	need (enc, 1);
133	*enc->cur++ = ch;	235	*enc->cur++ = ch;
134	}	236	}
…		…
136	static void	238	static void
137	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
138	{	240	{
139	need (enc, 9);	241	need (enc, 9);
140		242
141	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
143	else if (len < 0x100)	245	else if (ecb_expect_true (len <= 0xffU))
144	{	246	{
145	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	248	*enc->cur++ = len;
147	}	249	}
148	else if (len < 0x10000)	250	else if (len <= 0xffffU)
149	{	251	{
150	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	254	*enc->cur++ = len;
153	}	255	}
154	else if (len < 0x100000000)	256	else if (len <= 0xffffffffU)
155	{	257	{
156	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	262	*enc->cur++ = len;
161	}	263	}
162	else if (len)	264	else
163	{	265	{
164	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	274	*enc->cur++ = len;
173	}	275	}
174	}	276	}
175		277
176	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	287	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	318	need (enc, len);
181	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
182	enc->cur += len;	320	enc->cur += len;
183	}	321	}
184		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
185	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
186		349
187	static void	350	static void
188	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
189	{	352	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
194		357
195	++enc->depth;	358	++enc->depth;
196		359
197	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		361
		362	if (SvMAGICAL (av))
199	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
200	{	364	{
201	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
203	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
204		374
205	--enc->depth;	375	--enc->depth;
206	}	376	}
207		377
208	static void	378	static void
…		…
217		387
218	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
220		390
221	if (mg)	391	if (mg)
222	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	393	else
224	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
225		395
226	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
227	{	397	{
228	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
230	else	400	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		402
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	404	}
235		405
236	if (mg)	406	if (mg)
237	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		408
239	--enc->depth;	409	--enc->depth;
240	}	410	}
241		411
242	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
243	static void	413	static void
244	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
245	{	415	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
249	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
250		419
251	if (expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
252	{	421	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	423	? types_boolean_stash
		424	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		425	HV *error_stash = !CBOR_SLOW || types_error_stash
		426	? types_error_stash
		427	: gv_stashpv ("Types::Serialiser::Error", 1);
		428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		429	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		431
257	if (SvSTASH (sv) == stash)	432	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433
		434	if (stash == boolean_stash)
		435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
		439	else if (stash == error_stash)
		440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
		444	else if (stash == tagged_stash)
		445	{
		446	if (svt != SVt_PVAV)
		447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		448
		449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (!enc->shareable)
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
		465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
259	else	470	else
260	{	471	{
261	#if 0 //TODO	472	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		494
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	498	SPAGAIN;
278		499
279	// catch this surprisingly common error	500	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		503
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	504	encode_sv (enc, POPs);
287		505
		506	PUTBACK;
		507
288	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	509	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
		517	EXTEND (SP, 2);
		518	// we re-bless the reference to get overload and other niceties right
		519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		520	PUSHs (sv_cbor);
		521
		522	PUTBACK;
		523	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		524	SPAGAIN;
		525
		526	// catch this surprisingly common error
		527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		529
		530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		531	encode_uint (enc, MAJOR_ARRAY, count + 1);
		532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		533
		534	while (count)
		535	encode_sv (enc, SP[1 - count--]);
		536
		537	PUTBACK;
		538
		539	FREETMPS; LEAVE;
		540	}
298	else	541	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	542	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	543	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	544	}
304	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	549	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
328	}	554	}
329		555
330	static void	556	static void
331	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
332	{	558	{
333	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
334		560
335	need (enc, 9);	561	need (enc, 9);
336		562
337	if (expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	565	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
341	{	567	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
343		569
344	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		571
346	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
348		574
349	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
351	}	577	}
352	else	578	else
353	{	579	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
355		581
356	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		583
358	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
360		586
361	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
370		596
371	if (SvPOKp (sv))	597	if (SvPOKp (sv))
372	{	598	{
373	STRLEN len;	599	STRLEN len;
374	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
376	}	602	}
377	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	604	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
380	{	606	{
381	if (SvIsUV (sv))	607	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	611	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	613	}
388	else if (SvROK (sv))	614	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	616	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	620	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	623	}
398		624
399	static SV *	625	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
401	{	627	{
402	enc_t enc;	628	enc_t enc = { 0 };
403		629
404	enc.cbor = *cbor;	630	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		634
410	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
411	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
412		645
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		648
…		…
429	U8 *end; // end of input string	662	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
431	CBOR cbor;	664	CBOR cbor;
432	U32 depth; // recursion depth	665	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
		667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
434	} dec_t;	671	} dec_t;
435		672
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
437		680
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
439		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	ecb_cold static void
		704	err_nesting_exceeded (dec_t *dec)
		705	{
		706	err_set (dec, ERR_NESTING_EXCEEDED);
		707	}
		708
		709	#define ERR_DO(do) SB do; goto fail; SE
		710	#define ERR(reason) ERR_DO (err_set (dec, reason))
		711	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		712
		713	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		714
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	715	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
442		717
443	static UV	718	static UV
444	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
445	{	720	{
446	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
447	{	722	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		723
453	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
454	WANT (2);	728	WANT (1);
455	dec->cur += 2;	729	dec->cur += 1;
456	return dec->cur[-1];	730	return dec->cur[-1];
457		731	}
458	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
459	WANT (3);	734	WANT (2);
460	dec->cur += 3;	735	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
463		738	}
464	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
465	WANT (5);	741	WANT (4);
466	dec->cur += 5;	742	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
471		747	}
472	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
473	WANT (9);	750	WANT (8);
474	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
475	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
479	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
483		766	}
484	default:	767	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		769
488	fail:	770	fail:
489	return 0;	771	return 0;
490	}	772	}
491		773
…		…
496	{	778	{
497	AV *av = newAV ();	779	AV *av = newAV ();
498		780
499	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
500		782
501	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	784	{
503	++dec->cur;	785	++dec->cur;
504		786
505	for (;;)	787	for (;;)
506	{	788	{
507	WANT (1);	789	WANT (1);
508		790
509	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	792	{
511	++dec->cur;	793	++dec->cur;
512	break;	794	break;
513	}	795	}
514		796
515	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
516	}	798	}
517	}	799	}
518	else	800	else
519	{	801	{
520	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
521		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	805	av_fill (av, len - 1);
523		806
524	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
526	}	809	}
…		…
532	SvREFCNT_dec (av);	815	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	817	return &PL_sv_undef;
535	}	818	}
536		819
		820	static void
		821	decode_he (dec_t *dec, HV *hv)
		822	{
		823	// for speed reasons, we specialcase single-string
		824	// byte or utf-8 strings as keys, but only when !stringref
		825
		826	if (ecb_expect_true (!dec->stringref))
		827	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		828	{
		829	STRLEN len = decode_uint (dec);
		830	char *key = (char *)dec->cur;
		831
		832	WANT (len);
		833	dec->cur += len;
		834
		835	hv_store (hv, key, len, decode_sv (dec), 0);
		836
		837	return;
		838	}
		839	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		840	{
		841	STRLEN len = decode_uint (dec);
		842	char *key = (char *)dec->cur;
		843
		844	WANT (len);
		845	dec->cur += len;
		846
		847	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		848	if (!is_utf8_string (key, len))
		849	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		850
		851	hv_store (hv, key, -len, decode_sv (dec), 0);
		852
		853	return;
		854	}
		855
		856	SV *k = decode_sv (dec);
		857	SV *v = decode_sv (dec);
		858
		859	// we leak memory if uncaught exceptions are thrown by random magical
		860	// methods, and this is hopefully the only place where it can happen,
		861	// so if there is a chance of an exception, take the very slow path.
		862	// since catching exceptions is "undocumented/internal/forbidden" by
		863	// the new p5p powers, we need to call out to a perl function :/
		864	if (ecb_expect_false (SvAMAGIC (k)))
		865	{
		866	dSP;
		867
		868	ENTER; SAVETMPS;
		869	PUSHMARK (SP);
		870	EXTEND (SP, 3);
		871	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		872	PUSHs (sv_2mortal (k));
		873	PUSHs (sv_2mortal (v));
		874
		875	PUTBACK;
		876	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		877	SPAGAIN;
		878
		879	FREETMPS; LEAVE;
		880
		881	if (SvTRUE (ERRSV))
		882	ERR_ERRSV;
		883
		884	return;
		885	}
		886
		887	hv_store_ent (hv, k, v, 0);
		888	SvREFCNT_dec (k);
		889
		890	fail:
		891	;
		892	}
		893
537	static SV *	894	static SV *
538	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
539	{	896	{
540	HV *hv = newHV ();	897	HV *hv = newHV ();
541		898
542	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
543		900
544	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	902	{
546	++dec->cur;	903	++dec->cur;
547		904
548	for (;;)	905	for (;;)
549	{	906	{
550	WANT (1);	907	WANT (1);
551		908
552	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	910	{
554	++dec->cur;	911	++dec->cur;
555	break;	912	break;
556	}	913	}
557		914
558	SV *k = decode_sv (dec);	915	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	916	}
563	}	917	}
564	else	918	else
565	{	919	{
566	int len = decode_uint (dec);	920	UV pairs = decode_uint (dec);
567		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		923
568	while (len--)	924	while (pairs--)
569	{	925	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	926	}
576		927
577	DEC_DEC_DEPTH;	928	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	929	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		930
735	fail:	931	fail:
736	SvREFCNT_dec (hv);	932	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	933	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	934	return &PL_sv_undef;
739	}	935	}
740		936
741	static SV *	937	static SV *
742	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
743	{	939	{
744	SV *sv;	940	SV *sv = 0;
745		941
746	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	943	{
		944	// indefinite length strings
748	++dec->cur;	945	++dec->cur;
749		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
750	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
751		950
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	951	for (;;)
754	{	952	{
755	WANT (1);	953	WANT (1);
756		954
757	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	957	{
759	++dec->cur;	958	++dec->cur;
760	break;	959	break;
761	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		963
763	SV *sv2 = decode_sv (dec);	964	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	965
		966	WANT (len);
		967	sv_catpvn (sv, dec->cur, len);
		968	dec->cur += len;
765	}	969	}
766	}	970	}
767	else	971	else
768	{	972	{
769	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
770		974
771	WANT (len);	975	WANT (len);
772	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	977	dec->cur += len;
		978
		979	if (ecb_expect_false (dec->stringref)
		980	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		981	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	982	}
775		983
776	if (utf8)	984	if (utf8)
		985	{
		986	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		987	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		988	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		989
777	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
778		992
779	return sv;	993	return sv;
780		994
781	fail:	995	fail:
		996	SvREFCNT_dec (sv);
		997	return &PL_sv_undef;
		998	}
		999
		1000	static SV *
		1001	decode_tagged (dec_t *dec)
		1002	{
		1003	SV *sv = 0;
		1004	UV tag = decode_uint (dec);
		1005
		1006	WANT (1);
		1007
		1008	switch (tag)
		1009	{
		1010	case CBOR_TAG_MAGIC:
		1011	sv = decode_sv (dec);
		1012	break;
		1013
		1014	case CBOR_TAG_INDIRECTION:
		1015	sv = newRV_noinc (decode_sv (dec));
		1016	break;
		1017
		1018	case CBOR_TAG_STRINGREF_NAMESPACE:
		1019	{
		1020	// do nmot use SAVETMPS/FREETMPS, as these will
		1021	// erase mortalised caches, e.g. "shareable"
		1022	ENTER;
		1023
		1024	SAVESPTR (dec->stringref);
		1025	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1026
		1027	sv = decode_sv (dec);
		1028
		1029	LEAVE;
		1030	}
		1031	break;
		1032
		1033	case CBOR_TAG_STRINGREF:
		1034	{
		1035	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1036	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1037
		1038	UV idx = decode_uint (dec);
		1039
		1040	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1041	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1042
		1043	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1044	}
		1045	break;
		1046
		1047	case CBOR_TAG_VALUE_SHAREABLE:
		1048	{
		1049	if (ecb_expect_false (!dec->shareable))
		1050	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1051
		1052	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1053	{
		1054	sv = newSV (0);
		1055	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1056
		1057	SV *osv = decode_sv (dec);
		1058	sv_setsv (sv, osv);
		1059	SvREFCNT_dec_NN (osv);
		1060	}
		1061	else
		1062	{
		1063	av_push (dec->shareable, &PL_sv_undef);
		1064	int idx = AvFILLp (dec->shareable);
		1065	sv = decode_sv (dec);
		1066	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1067	}
		1068	}
		1069	break;
		1070
		1071	case CBOR_TAG_VALUE_SHAREDREF:
		1072	{
		1073	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1074	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1075
		1076	UV idx = decode_uint (dec);
		1077
		1078	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1079	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1080
		1081	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1082
		1083	if (sv == &PL_sv_undef)
		1084	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1085	}
		1086	break;
		1087
		1088	case CBOR_TAG_PERL_OBJECT:
		1089	{
		1090	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1091	goto filter;
		1092
		1093	sv = decode_sv (dec);
		1094
		1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1096	ERR ("corrupted CBOR data (non-array perl object)");
		1097
		1098	AV *av = (AV *)SvRV (sv);
		1099	int len = av_len (av) + 1;
		1100	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1101
		1102	if (!stash)
		1103	ERR ("cannot decode perl-object (package does not exist)");
		1104
		1105	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1106
		1107	if (!method)
		1108	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1109
		1110	dSP;
		1111
		1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
		1114	EXTEND (SP, len + 1);
		1115	// we re-bless the reference to get overload and other niceties right
		1116	PUSHs (*av_fetch (av, 0, 1));
		1117	PUSHs (sv_cbor);
		1118
		1119	int i;
		1120
		1121	for (i = 1; i < len; ++i)
		1122	PUSHs (*av_fetch (av, i, 1));
		1123
		1124	PUTBACK;
		1125	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1126	SPAGAIN;
		1127
		1128	if (SvTRUE (ERRSV))
		1129	{
		1130	FREETMPS; LEAVE;
		1131	ERR_ERRSV;
		1132	}
		1133
		1134	SvREFCNT_dec (sv);
		1135	sv = SvREFCNT_inc (POPs);
		1136
		1137	PUTBACK;
		1138
		1139	FREETMPS; LEAVE;
		1140	}
		1141	break;
		1142
		1143	default:
		1144	filter:
		1145	{
		1146	SV *tag_sv = newSVuv (tag);
		1147
		1148	sv = decode_sv (dec);
		1149
		1150	dSP;
		1151	ENTER; SAVETMPS;
		1152	SAVESTACK_POS ();
		1153	PUSHMARK (SP);
		1154	EXTEND (SP, 2);
		1155	PUSHs (tag_sv);
		1156	PUSHs (sv);
		1157
		1158	PUTBACK;
		1159	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1160	SPAGAIN;
		1161
		1162	if (SvTRUE (ERRSV))
		1163	{
		1164	SvREFCNT_dec (tag_sv);
		1165	FREETMPS; LEAVE;
		1166	ERR_ERRSV;
		1167	}
		1168
		1169	if (count)
		1170	{
		1171	SvREFCNT_dec (tag_sv);
		1172	SvREFCNT_dec (sv);
		1173	sv = SvREFCNT_inc (POPs);
		1174	}
		1175	else
		1176	{
		1177	AV *av = newAV ();
		1178	av_push (av, tag_sv);
		1179	av_push (av, sv);
		1180
		1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1182	? cbor_tagged_stash
		1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
		1190	}
		1191	break;
		1192	}
		1193
		1194	return sv;
		1195
		1196	fail:
		1197	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1198	return &PL_sv_undef;
783	}	1199	}
784		1200
785	static SV *	1201	static SV *
786	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
787	{	1203	{
788	WANT (1);	1204	WANT (1);
789		1205
790	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1207	{
792	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1215
800	return decode_str (dec, 1);	1216	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
810	{	1218	{
811	case 20:	1219	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1220	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1221	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1222	#endif
815	return newSVsv (cbor_false);	1223	return newSVsv (types_false);
816	case 21:	1224	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1225	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1226	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1227	#endif
820	return newSVsv (cbor_true);	1228	return newSVsv (types_true);
821	case 22:	1229	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
		1231	case SIMPLE_UNDEF:
		1232	#if CBOR_SLOW
		1233	types_error = get_bool ("Types::Serialiser::error");
		1234	#endif
		1235	return newSVsv (types_error);
823		1236
824	case 25:	1237	case MISC_FLOAT16:
825	{	1238	{
826	WANT (2);	1239	WANT (2);
827		1240
828	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
829	dec->cur += 2;	1242	dec->cur += 2;
830		1243
831	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
832	}	1245	}
833		1246
834	case 26:	1247	case MISC_FLOAT32:
835	{	1248	{
836	uint32_t fp;	1249	uint32_t fp;
837	WANT (4);	1250	WANT (4);
838	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
839	dec->cur += 4;	1252	dec->cur += 4;
…		…
842	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
843		1256
844	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
845	}	1258	}
846		1259
847	case 27:	1260	case MISC_FLOAT64:
848	{	1261	{
849	uint64_t fp;	1262	uint64_t fp;
850	WANT (8);	1263	WANT (8);
851	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
852	dec->cur += 8;	1265	dec->cur += 8;
…		…
855	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
856		1269
857	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
858	}	1271	}
859		1272
860	// 0..19 unassigned	1273	// 0..19 unassigned simple
861	// 24 reserved + unassigned (reserved values are not encodable)	1274	// 24 reserved + unassigned simple (reserved values are not encodable)
		1275	// 28-30 unassigned misc
		1276	// 31 break code
862	default:	1277	default:
863	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
864	}	1279	}
865		1280
866	break;	1281	break;
867	}	1282	}
868	#if 0
869	switch (*dec->cur)
870	{
871	//case '"': ++dec->cur; return decode_str (dec);
872	case '[': ++dec->cur; return decode_av (dec);
873	case '{': ++dec->cur; return decode_hv (dec);
874
875	case '-':
876	case '0': case '1': case '2': case '3': case '4':
877	case '5': case '6': case '7': case '8': case '9':
878	//TODO return decode_num (dec);
879
880	case 't':
881	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
882	{
883	dec->cur += 4;
884	#if CBOR_SLOW
885	cbor_true = get_bool ("CBOR::XS::true");
886	#endif
887	return newSVsv (cbor_true);
888	}
889	else
890	ERR ("'true' expected");
891
892	break;
893
894	case 'f':
895	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
896	{
897	dec->cur += 5;
898	#if CBOR_SLOW
899	cbor_false = get_bool ("CBOR::XS::false");
900	#endif
901	return newSVsv (cbor_false);
902	}
903	else
904	ERR ("'false' expected");
905
906	break;
907
908	case 'n':
909	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
910	{
911	dec->cur += 4;
912	return newSVsv (&PL_sv_undef);
913	}
914	else
915	ERR ("'null' expected");
916
917	break;
918
919	default:
920	ERR ("malformed CBOR string, neither array, object, number, string or atom");
921	break;
922	}
923	#endif
924		1283
925	fail:	1284	fail:
926	return &PL_sv_undef;	1285	return &PL_sv_undef;
927	}	1286	}
928		1287
929	static SV *	1288	static SV *
930	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
931	{	1290	{
932	dec_t dec;	1291	dec_t dec = { 0 };
933	SV *sv;	1292	SV *sv;
		1293	STRLEN len;
		1294	char *data = SvPVbyte (string, len);
934		1295
935	/* work around bugs in 5.10 where manipulating magic values
936	* makes perl ignore the magic in subsequent accesses.
937	* also make a copy of non-PV values, to get them into a clean
938	* state (SvPV should do that, but it's buggy, see below).
939	*/
940	/*SvGETMAGIC (string);*/
941	if (SvMAGICAL (string) || !SvPOK (string))
942	string = sv_2mortal (newSVsv (string));
943
944	SvUPGRADE (string, SVt_PV);
945
946	/* work around a bug in perl 5.10, which causes SvCUR to fail an
947	* assertion with -DDEBUGGING, although SvCUR is documented to
948	* return the xpv_cur field which certainly exists after upgrading.
949	* according to nicholas clark, calling SvPOK fixes this.
950	* But it doesn't fix it, so try another workaround, call SvPV_nolen
951	* and hope for the best.
952	* Damnit, SvPV_nolen still trips over yet another assertion. This
953	* assertion business is seriously broken, try yet another workaround
954	* for the broken -DDEBUGGING.
955	*/
956	{
957	#ifdef DEBUGGING
958	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
959	#else
960	STRLEN offset = SvCUR (string);
961	#endif
962
963	if (offset > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
964	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1297	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
965	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1298	(unsigned long)len, (unsigned long)cbor->max_size);
966	}
967
968	sv_utf8_downgrade (string, 0);
969		1299
970	dec.cbor = *cbor;	1300	dec.cbor = *cbor;
971	dec.cur = (U8 *)SvPVX (string);	1301	dec.cur = (U8 *)data;
972	dec.end = (U8 *)SvEND (string);	1302	dec.end = (U8 *)data + len;
973	dec.err = 0;
974	dec.depth = 0;
975
976	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
977	;//TODO dec.cbor.flags |= F_HOOK;
978		1303
979	sv = decode_sv (&dec);	1304	sv = decode_sv (&dec);
980		1305
981	if (offset_return)	1306	if (offset_return)
982	*offset_return = dec.cur;	1307	*offset_return = dec.cur;
…		…
985	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
986	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
987		1312
988	if (dec.err)	1313	if (dec.err)
989	{	1314	{
		1315	if (dec.shareable)
		1316	{
		1317	// need to break cyclic links, which would all be in shareable
		1318	int i;
		1319	SV **svp;
		1320
		1321	for (i = av_len (dec.shareable) + 1; i--; )
		1322	if ((svp = av_fetch (dec.shareable, i, 0)))
		1323	sv_setsv (*svp, &PL_sv_undef);
		1324	}
		1325
990	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
991	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1331	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
992	}	1332	}
993		1333
994	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
995		1335
996	return sv;	1336	return sv;
997	}	1337	}
998		1338
		1339	/////////////////////////////////////////////////////////////////////////////
		1340	// incremental parser
		1341
		1342	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1343
		1344	// returns 0 for notyet, 1 for success or error
		1345	static int
		1346	incr_parse (CBOR *self, SV *cborstr)
		1347	{
		1348	STRLEN cur;
		1349	SvPV (cborstr, cur);
		1350
		1351	while (ecb_expect_true (self->incr_need <= cur))
		1352	{
		1353	// table of integer count bytes
		1354	static I8 incr_len[MINOR_MASK + 1] = {
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	0, 0, 0, 0, 0, 0, 0, 0,
		1358	1, 2, 4, 8,-1,-1,-1,-2
		1359	};
		1360
		1361	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1362	U8 m = *p & MINOR_MASK;
		1363	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1364	I8 ilen = incr_len[m];
		1365
		1366	self->incr_need = self->incr_pos + 1;
		1367
		1368	if (ecb_expect_false (ilen < 0))
		1369	{
		1370	if (m != MINOR_INDEF)
		1371	return 1; // error
		1372
		1373	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1374	{
		1375	if (count >= 0)
		1376	return 1; // error
		1377
		1378	count = 1;
		1379	}
		1380	else
		1381	{
		1382	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1383	count = -1;
		1384	}
		1385	}
		1386	else
		1387	{
		1388	self->incr_need += ilen;
		1389	if (ecb_expect_false (self->incr_need > cur))
		1390	return 0;
		1391
		1392	int major = *p >> MAJOR_SHIFT;
		1393
		1394	switch (major)
		1395	{
		1396	case MAJOR_TAG >> MAJOR_SHIFT:
		1397	++count; // tags merely prefix another value
		1398	break;
		1399
		1400	case MAJOR_BYTES >> MAJOR_SHIFT:
		1401	case MAJOR_TEXT >> MAJOR_SHIFT:
		1402	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1403	case MAJOR_MAP >> MAJOR_SHIFT:
		1404	{
		1405	UV len;
		1406
		1407	if (ecb_expect_false (ilen))
		1408	{
		1409	len = 0;
		1410
		1411	do {
		1412	len = (len << 8) | *++p;
		1413	} while (--ilen);
		1414	}
		1415	else
		1416	len = m;
		1417
		1418	switch (major)
		1419	{
		1420	case MAJOR_BYTES >> MAJOR_SHIFT:
		1421	case MAJOR_TEXT >> MAJOR_SHIFT:
		1422	self->incr_need += len;
		1423	if (ecb_expect_false (self->incr_need > cur))
		1424	return 0;
		1425
		1426	break;
		1427
		1428	case MAJOR_MAP >> MAJOR_SHIFT:
		1429	len <<= 1;
		1430	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1431	if (len)
		1432	{
		1433	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1434	count = len + 1;
		1435	}
		1436	break;
		1437	}
		1438	}
		1439	}
		1440	}
		1441
		1442	self->incr_pos = self->incr_need;
		1443
		1444	if (count > 0)
		1445	{
		1446	while (!--count)
		1447	{
		1448	if (!AvFILLp (self->incr_count))
		1449	return 1; // done
		1450
		1451	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1452	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1453	}
		1454
		1455	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1456	}
		1457	}
		1458
		1459	return 0;
		1460	}
		1461
		1462
999	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
1000	// XS interface functions	1464	// XS interface functions
1001		1465
1002	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
1003		1467
1004	BOOT:	1468	BOOT:
1005	{	1469	{
1006	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1470	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1007	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1471	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1008		1472
1009	cbor_true = get_bool ("CBOR::XS::true");	1473	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1010	cbor_false = get_bool ("CBOR::XS::false");	1474	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1475
		1476	types_true = get_bool ("Types::Serialiser::true" );
		1477	types_false = get_bool ("Types::Serialiser::false");
		1478	types_error = get_bool ("Types::Serialiser::error");
		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
		1482	sv_cbor = newSVpv ("CBOR", 0);
		1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1011	}	1486	}
1012		1487
1013	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
1014		1489
1015	void CLONE (...)	1490	void CLONE (...)
1016	CODE:	1491	CODE:
1017	cbor_stash = 0;	1492	cbor_stash = 0;
		1493	cbor_tagged_stash = 0;
		1494	types_error_stash = 0;
1018	cbor_boolean_stash = 0;	1495	types_boolean_stash = 0;
1019		1496
1020	void new (char *klass)	1497	void new (char *klass)
1021	PPCODE:	1498	PPCODE:
1022	{	1499	{
1023	SV *pv = NEWSV (0, sizeof (CBOR));	1500	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1031		1508
1032	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
1033	ALIAS:	1510	ALIAS:
1034	shrink = F_SHRINK	1511	shrink = F_SHRINK
1035	allow_unknown = F_ALLOW_UNKNOWN	1512	allow_unknown = F_ALLOW_UNKNOWN
		1513	allow_sharing = F_ALLOW_SHARING
		1514	allow_cycles = F_ALLOW_CYCLES
		1515	forbid_objects = F_FORBID_OBJECTS
		1516	pack_strings = F_PACK_STRINGS
		1517	text_keys = F_TEXT_KEYS
		1518	text_strings = F_TEXT_STRINGS
		1519	validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1520	PPCODE:
1037	{	1521	{
1038	if (enable)	1522	if (enable)
1039	self->flags |= ix;	1523	self->flags |= ix;
1040	else	1524	else
…		…
1045		1529
1046	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
1047	ALIAS:	1531	ALIAS:
1048	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
1049	get_allow_unknown = F_ALLOW_UNKNOWN	1533	get_allow_unknown = F_ALLOW_UNKNOWN
		1534	get_allow_sharing = F_ALLOW_SHARING
		1535	get_allow_cycles = F_ALLOW_CYCLES
		1536	get_forbid_objects = F_FORBID_OBJECTS
		1537	get_pack_strings = F_PACK_STRINGS
		1538	get_text_keys = F_TEXT_KEYS
		1539	get_text_strings = F_TEXT_STRINGS
		1540	get_validate_utf8 = F_VALIDATE_UTF8
1050	PPCODE:	1541	PPCODE:
1051	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
1052		1543
1053	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1054	PPCODE:	1545	PPCODE:
…		…
1070	CODE:	1561	CODE:
1071	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
1072	OUTPUT:	1563	OUTPUT:
1073	RETVAL	1564	RETVAL
1074		1565
1075	#if 0 //TODO	1566	void filter (CBOR *self, SV *filter = 0)
1076
1077	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1078	PPCODE:	1567	PPCODE:
1079	{
1080	SvREFCNT_dec (self->cb_object);	1568	SvREFCNT_dec (self->filter);
1081	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1569	self->filter = filter ? newSVsv (filter) : filter;
1082
1083	XPUSHs (ST (0));	1570	XPUSHs (ST (0));
1084	}
1085		1571
1086	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1572	SV *get_filter (CBOR *self)
1087	PPCODE:	1573	CODE:
1088	{	1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1089	if (!self->cb_sk_object)	1575	OUTPUT:
1090	self->cb_sk_object = newHV ();	1576	RETVAL
1091
1092	if (SvOK (cb))
1093	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1094	else
1095	{
1096	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1097
1098	if (!HvKEYS (self->cb_sk_object))
1099	{
1100	SvREFCNT_dec (self->cb_sk_object);
1101	self->cb_sk_object = 0;
1102	}
1103	}
1104
1105	XPUSHs (ST (0));
1106	}
1107
1108	#endif
1109		1577
1110	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
1111	PPCODE:	1579	PPCODE:
1112	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1580	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1113	XPUSHs (scalar);	1581	XPUSHs (scalar);
…		…
1126	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
1127	PUSHs (sv);	1595	PUSHs (sv);
1128	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1129	}	1597	}
1130		1598
		1599	void incr_parse (CBOR *self, SV *cborstr)
		1600	ALIAS:
		1601	incr_parse_multiple = 1
		1602	PPCODE:
		1603	{
		1604	if (SvUTF8 (cborstr))
		1605	sv_utf8_downgrade (cborstr, 0);
		1606
		1607	if (!self->incr_count)
		1608	{
		1609	self->incr_count = newAV ();
		1610	self->incr_pos = 0;
		1611	self->incr_need = 1;
		1612
		1613	av_push (self->incr_count, newSViv (1));
		1614	}
		1615
		1616	do
		1617	{
		1618	if (!incr_parse (self, cborstr))
		1619	{
		1620	if (self->incr_need > self->max_size && self->max_size)
		1621	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1622	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1623
		1624	break;
		1625	}
		1626
		1627	SV *sv;
		1628	char *offset;
		1629
		1630	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1631	XPUSHs (sv);
		1632
		1633	sv_chop (cborstr, offset);
		1634
		1635	av_clear (self->incr_count);
		1636	av_push (self->incr_count, newSViv (1));
		1637
		1638	self->incr_pos = 0;
		1639	self->incr_need = self->incr_pos + 1;
		1640	}
		1641	while (ix);
		1642	}
		1643
		1644	void incr_reset (CBOR *self)
		1645	CODE:
		1646	{
		1647	SvREFCNT_dec (self->incr_count);
		1648	self->incr_count = 0;
		1649	}
		1650
1131	void DESTROY (CBOR *self)	1651	void DESTROY (CBOR *self)
1132	CODE:	1652	PPCODE:
1133	SvREFCNT_dec (self->cb_sk_object);	1653	cbor_free (self);
1134	SvREFCNT_dec (self->cb_object);
1135		1654
1136	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
1137		1656
1138	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
1139	PPCODE:	1661	PPCODE:
1140	{	1662	{
1141	CBOR cbor;	1663	CBOR cbor;
1142	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
1143	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1144	XPUSHs (scalar);	1667	XPUSHs (scalar);
1145	}	1668	}
1146		1669
1147	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines