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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.4 by root, Sat Oct 26 21:06:37 2013 UTC vs.
Revision 1.56 by root, Fri Nov 25 11:33:03 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 <= 0xff)	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 <= 0xffff)	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 <= 0xffffffff)	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	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 (ecb_expect_false (++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	STRLEN 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	STRLEN 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	// do nmot use SAVETMPS/FREETMPS, as these will
		948	// erase mortalised caches, e.g. "shareable"
		949	ENTER;
		950
		951	SAVESPTR (dec->stringref);
		952	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		953
		954	sv = decode_sv (dec);
		955
		956	LEAVE;
		957	}
		958	break;
		959
		960	case CBOR_TAG_STRINGREF:
		961	{
		962	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		963	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		964
		965	UV idx = decode_uint (dec);
		966
		967	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		968	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		969
		970	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		971	}
		972	break;
		973
		974	case CBOR_TAG_VALUE_SHAREABLE:
		975	{
		976	if (ecb_expect_false (!dec->shareable))
		977	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		978
		979	if (dec->cbor.flags & F_ALLOW_CYCLES)
		980	{
		981	sv = newSV (0);
		982	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		983
		984	SV *osv = decode_sv (dec);
		985	sv_setsv (sv, osv);
		986	SvREFCNT_dec_NN (osv);
		987	}
		988	else
		989	{
		990	av_push (dec->shareable, &PL_sv_undef);
		991	int idx = AvFILLp (dec->shareable);
		992	sv = decode_sv (dec);
		993	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		994	}
		995	}
		996	break;
		997
		998	case CBOR_TAG_VALUE_SHAREDREF:
		999	{
		1000	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1001	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1002
		1003	UV idx = decode_uint (dec);
		1004
		1005	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1006	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1007
		1008	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1009
		1010	if (sv == &PL_sv_undef)
		1011	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1012	}
		1013	break;
		1014
		1015	case CBOR_TAG_PERL_OBJECT:
		1016	{
		1017	sv = decode_sv (dec);
		1018
		1019	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1020	ERR ("corrupted CBOR data (non-array perl object)");
		1021
		1022	AV *av = (AV *)SvRV (sv);
		1023	int len = av_len (av) + 1;
		1024	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1025
		1026	if (!stash)
		1027	ERR ("cannot decode perl-object (package does not exist)");
		1028
		1029	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1030
		1031	if (!method)
		1032	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1033
		1034	dSP;
		1035
		1036	ENTER; SAVETMPS;
		1037	PUSHMARK (SP);
		1038	EXTEND (SP, len + 1);
		1039	// we re-bless the reference to get overload and other niceties right
		1040	PUSHs (*av_fetch (av, 0, 1));
		1041	PUSHs (sv_cbor);
		1042
		1043	int i;
		1044
		1045	for (i = 1; i < len; ++i)
		1046	PUSHs (*av_fetch (av, i, 1));
		1047
		1048	PUTBACK;
		1049	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1050	SPAGAIN;
		1051
		1052	if (SvTRUE (ERRSV))
		1053	{
		1054	FREETMPS; LEAVE;
		1055	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1056	}
		1057
		1058	SvREFCNT_dec (sv);
		1059	sv = SvREFCNT_inc (POPs);
		1060
		1061	PUTBACK;
		1062
		1063	FREETMPS; LEAVE;
		1064	}
		1065	break;
		1066
		1067	default:
		1068	{
		1069	sv = decode_sv (dec);
		1070
		1071	dSP;
		1072	ENTER; SAVETMPS;
		1073	SAVESTACK_POS ();
		1074	PUSHMARK (SP);
		1075	EXTEND (SP, 2);
		1076	PUSHs (newSVuv (tag));
		1077	PUSHs (sv);
		1078
		1079	PUTBACK;
		1080	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1081	SPAGAIN;
		1082
		1083	if (SvTRUE (ERRSV))
		1084	{
		1085	FREETMPS; LEAVE;
		1086	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1087	}
		1088
		1089	if (count)
		1090	{
		1091	SvREFCNT_dec (sv);
		1092	sv = SvREFCNT_inc (POPs);
		1093	}
		1094	else
		1095	{
		1096	AV *av = newAV ();
		1097	av_push (av, newSVuv (tag));
		1098	av_push (av, sv);
		1099
		1100	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1101	? cbor_tagged_stash
		1102	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1103	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1104	}
		1105
		1106	PUTBACK;
		1107
		1108	FREETMPS; LEAVE;
		1109	}
		1110	break;
		1111	}
		1112
788	return sv;	1113	return sv;
789		1114
790	AV *av = newAV ();	1115	fail:
791	av_push (av, newSVuv (tag));	1116	SvREFCNT_dec (sv);
792	av_push (av, sv);	1117	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1118	}
795		1119
796	static SV *	1120	static SV *
797	decode_sv (dec_t *dec)	1121	decode_sv (dec_t *dec)
798	{	1122	{
799	WANT (1);	1123	WANT (1);
800		1124
801	switch (*dec->cur >> 5)	1125	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1126	{
803	case 0: // unsigned int	1127	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1128	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1129	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1130	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1131	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1132	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1133	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1134
811	return decode_str (dec, 1);	1135	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)	1136	switch (*dec->cur++ & MINOR_MASK)
820	{	1137	{
821	case 20:	1138	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1139	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1140	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1141	#endif
825	return newSVsv (cbor_false);	1142	return newSVsv (types_false);
826	case 21:	1143	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1144	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1145	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1146	#endif
830	return newSVsv (cbor_true);	1147	return newSVsv (types_true);
831	case 22:	1148	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1149	return newSVsv (&PL_sv_undef);
		1150	case SIMPLE_UNDEF:
		1151	#if CBOR_SLOW
		1152	types_error = get_bool ("Types::Serialiser::error");
		1153	#endif
		1154	return newSVsv (types_error);
833		1155
834	case 25:	1156	case MISC_FLOAT16:
835	{	1157	{
836	WANT (2);	1158	WANT (2);
837		1159
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1160	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1161	dec->cur += 2;
840		1162
841	return newSVnv (ecb_binary16_to_float (fp));	1163	return newSVnv (ecb_binary16_to_float (fp));
842	}	1164	}
843		1165
844	case 26:	1166	case MISC_FLOAT32:
845	{	1167	{
846	uint32_t fp;	1168	uint32_t fp;
847	WANT (4);	1169	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1170	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1171	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1174	fp = ecb_bswap32 (fp);
853		1175
854	return newSVnv (ecb_binary32_to_float (fp));	1176	return newSVnv (ecb_binary32_to_float (fp));
855	}	1177	}
856		1178
857	case 27:	1179	case MISC_FLOAT64:
858	{	1180	{
859	uint64_t fp;	1181	uint64_t fp;
860	WANT (8);	1182	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1183	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1184	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1187	fp = ecb_bswap64 (fp);
866		1188
867	return newSVnv (ecb_binary64_to_double (fp));	1189	return newSVnv (ecb_binary64_to_double (fp));
868	}	1190	}
869		1191
870	// 0..19 unassigned	1192	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1193	// 24 reserved + unassigned simple (reserved values are not encodable)
		1194	// 28-30 unassigned misc
		1195	// 31 break code
872	default:	1196	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1197	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1198	}
875		1199
876	break;	1200	break;
877	}	1201	}
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		1202
935	fail:	1203	fail:
936	return &PL_sv_undef;	1204	return &PL_sv_undef;
937	}	1205	}
938		1206
939	static SV *	1207	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1208	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1209	{
942	dec_t dec;	1210	dec_t dec = { 0 };
943	SV *sv;	1211	SV *sv;
		1212	STRLEN len;
		1213	char *data = SvPVbyte (string, len);
944		1214
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)	1215	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",	1216	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);	1217	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1218
980	dec.cbor = *cbor;	1219	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1220	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1221	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		1222
989	sv = decode_sv (&dec);	1223	sv = decode_sv (&dec);
990		1224
991	if (offset_return)	1225	if (offset_return)
992	*offset_return = dec.cur;	1226	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1229	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1230	dec.err = "garbage after CBOR object";
997		1231
998	if (dec.err)	1232	if (dec.err)
999	{	1233	{
		1234	if (dec.shareable)
		1235	{
		1236	// need to break cyclic links, which whould all be in shareable
		1237	int i;
		1238	SV **svp;
		1239
		1240	for (i = av_len (dec.shareable) + 1; i--; )
		1241	if ((svp = av_fetch (dec.shareable, i, 0)))
		1242	sv_setsv (*svp, &PL_sv_undef);
		1243	}
		1244
1000	SvREFCNT_dec (sv);	1245	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1246	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1247	}
1003		1248
1004	sv = sv_2mortal (sv);	1249	sv = sv_2mortal (sv);
1005		1250
1006	return sv;	1251	return sv;
1007	}	1252	}
1008		1253
		1254	/////////////////////////////////////////////////////////////////////////////
		1255	// incremental parser
		1256
		1257	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1258
		1259	// returns 0 for notyet, 1 for success or error
		1260	static int
		1261	incr_parse (CBOR *self, SV *cborstr)
		1262	{
		1263	STRLEN cur;
		1264	SvPV (cborstr, cur);
		1265
		1266	while (ecb_expect_true (self->incr_need <= cur))
		1267	{
		1268	// table of integer count bytes
		1269	static I8 incr_len[MINOR_MASK + 1] = {
		1270	0, 0, 0, 0, 0, 0, 0, 0,
		1271	0, 0, 0, 0, 0, 0, 0, 0,
		1272	0, 0, 0, 0, 0, 0, 0, 0,
		1273	1, 2, 4, 8,-1,-1,-1,-2
		1274	};
		1275
		1276	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1277	U8 m = *p & MINOR_MASK;
		1278	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1279	I8 ilen = incr_len[m];
		1280
		1281	self->incr_need = self->incr_pos + 1;
		1282
		1283	if (ecb_expect_false (ilen < 0))
		1284	{
		1285	if (m != MINOR_INDEF)
		1286	return 1; // error
		1287
		1288	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1289	{
		1290	if (count >= 0)
		1291	return 1; // error
		1292
		1293	count = 1;
		1294	}
		1295	else
		1296	{
		1297	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1298	count = -1;
		1299	}
		1300	}
		1301	else
		1302	{
		1303	self->incr_need += ilen;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	int major = *p >> MAJOR_SHIFT;
		1308
		1309	switch (major)
		1310	{
		1311	case MAJOR_TAG >> MAJOR_SHIFT:
		1312	++count; // tags merely prefix another value
		1313	break;
		1314
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1318	case MAJOR_MAP >> MAJOR_SHIFT:
		1319	{
		1320	UV len;
		1321
		1322	if (ecb_expect_false (ilen))
		1323	{
		1324	len = 0;
		1325
		1326	do {
		1327	len = (len << 8) | *++p;
		1328	} while (--ilen);
		1329	}
		1330	else
		1331	len = m;
		1332
		1333	switch (major)
		1334	{
		1335	case MAJOR_BYTES >> MAJOR_SHIFT:
		1336	case MAJOR_TEXT >> MAJOR_SHIFT:
		1337	self->incr_need += len;
		1338	if (ecb_expect_false (self->incr_need > cur))
		1339	return 0;
		1340
		1341	break;
		1342
		1343	case MAJOR_MAP >> MAJOR_SHIFT:
		1344	len <<= 1;
		1345	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1346	if (len)
		1347	{
		1348	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1349	count = len + 1;
		1350	}
		1351	break;
		1352	}
		1353	}
		1354	}
		1355	}
		1356
		1357	self->incr_pos = self->incr_need;
		1358
		1359	if (count > 0)
		1360	{
		1361	while (!--count)
		1362	{
		1363	if (!AvFILLp (self->incr_count))
		1364	return 1; // done
		1365
		1366	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1367	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1368	}
		1369
		1370	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1371	}
		1372	}
		1373
		1374	return 0;
		1375	}
		1376
		1377
1009	/////////////////////////////////////////////////////////////////////////////	1378	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1379	// XS interface functions
1011		1380
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1381	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1382
1014	BOOT:	1383	BOOT:
1015	{	1384	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1385	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1386	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1387
1019	cbor_true = get_bool ("CBOR::XS::true");	1388	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1389	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1390
		1391	types_true = get_bool ("Types::Serialiser::true" );
		1392	types_false = get_bool ("Types::Serialiser::false");
		1393	types_error = get_bool ("Types::Serialiser::error");
		1394
		1395	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1396
		1397	sv_cbor = newSVpv ("CBOR", 0);
		1398	SvREADONLY_on (sv_cbor);
		1399
		1400	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1021	}	1401	}
1022		1402
1023	PROTOTYPES: DISABLE	1403	PROTOTYPES: DISABLE
1024		1404
1025	void CLONE (...)	1405	void CLONE (...)
1026	CODE:	1406	CODE:
1027	cbor_stash = 0;	1407	cbor_stash = 0;
		1408	cbor_tagged_stash = 0;
		1409	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1410	types_boolean_stash = 0;
1029		1411
1030	void new (char *klass)	1412	void new (char *klass)
1031	PPCODE:	1413	PPCODE:
1032	{	1414	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1415	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1423
1042	void shrink (CBOR *self, int enable = 1)	1424	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1425	ALIAS:
1044	shrink = F_SHRINK	1426	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1427	allow_unknown = F_ALLOW_UNKNOWN
		1428	allow_sharing = F_ALLOW_SHARING
		1429	allow_cycles = F_ALLOW_CYCLES
		1430	pack_strings = F_PACK_STRINGS
		1431	text_keys = F_TEXT_KEYS
		1432	text_strings = F_TEXT_STRINGS
		1433	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1434	PPCODE:
1047	{	1435	{
1048	if (enable)	1436	if (enable)
1049	self->flags |= ix;	1437	self->flags |= ix;
1050	else	1438	else
…		…
1055		1443
1056	void get_shrink (CBOR *self)	1444	void get_shrink (CBOR *self)
1057	ALIAS:	1445	ALIAS:
1058	get_shrink = F_SHRINK	1446	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1447	get_allow_unknown = F_ALLOW_UNKNOWN
		1448	get_allow_sharing = F_ALLOW_SHARING
		1449	get_allow_cycles = F_ALLOW_CYCLES
		1450	get_pack_strings = F_PACK_STRINGS
		1451	get_text_keys = F_TEXT_KEYS
		1452	get_text_strings = F_TEXT_STRINGS
		1453	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1454	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1455	XPUSHs (boolSV (self->flags & ix));
1062		1456
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1457	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1458	PPCODE:
…		…
1080	CODE:	1474	CODE:
1081	RETVAL = self->max_size;	1475	RETVAL = self->max_size;
1082	OUTPUT:	1476	OUTPUT:
1083	RETVAL	1477	RETVAL
1084		1478
1085	#if 0 //TODO	1479	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1480	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1481	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1482	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1483	XPUSHs (ST (0));
1094	}
1095		1484
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1485	SV *get_filter (CBOR *self)
1097	PPCODE:	1486	CODE:
1098	{	1487	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1488	OUTPUT:
1100	self->cb_sk_object = newHV ();	1489	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		1490
1120	void encode (CBOR *self, SV *scalar)	1491	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1492	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1493	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1494	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1507	EXTEND (SP, 2);
1137	PUSHs (sv);	1508	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1509	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1510	}
1140		1511
		1512	void incr_parse (CBOR *self, SV *cborstr)
		1513	ALIAS:
		1514	incr_parse_multiple = 1
		1515	PPCODE:
		1516	{
		1517	if (SvUTF8 (cborstr))
		1518	sv_utf8_downgrade (cborstr, 0);
		1519
		1520	if (!self->incr_count)
		1521	{
		1522	self->incr_count = newAV ();
		1523	self->incr_pos = 0;
		1524	self->incr_need = 1;
		1525
		1526	av_push (self->incr_count, newSViv (1));
		1527	}
		1528
		1529	do
		1530	{
		1531	if (!incr_parse (self, cborstr))
		1532	{
		1533	if (self->incr_need > self->max_size && self->max_size)
		1534	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1535	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1536
		1537	break;
		1538	}
		1539
		1540	SV *sv;
		1541	char *offset;
		1542
		1543	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1544	XPUSHs (sv);
		1545
		1546	sv_chop (cborstr, offset);
		1547
		1548	av_clear (self->incr_count);
		1549	av_push (self->incr_count, newSViv (1));
		1550
		1551	self->incr_pos = 0;
		1552	self->incr_need = self->incr_pos + 1;
		1553	}
		1554	while (ix);
		1555	}
		1556
		1557	void incr_reset (CBOR *self)
		1558	CODE:
		1559	{
		1560	SvREFCNT_dec (self->incr_count);
		1561	self->incr_count = 0;
		1562	}
		1563
1141	void DESTROY (CBOR *self)	1564	void DESTROY (CBOR *self)
1142	CODE:	1565	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1566	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1567
1146	PROTOTYPES: ENABLE	1568	PROTOTYPES: ENABLE
1147		1569
1148	void encode_cbor (SV *scalar)	1570	void encode_cbor (SV *scalar)
		1571	ALIAS:
		1572	encode_cbor = 0
		1573	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1574	PPCODE:
1150	{	1575	{
1151	CBOR cbor;	1576	CBOR cbor;
1152	cbor_init (&cbor);	1577	cbor_init (&cbor);
		1578	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1580	XPUSHs (scalar);
1155	}	1581	}
1156		1582
1157	void decode_cbor (SV *cborstr)	1583	void decode_cbor (SV *cborstr)

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