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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.52 by root, Sun Apr 24 19:31:55 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_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
20		107
21	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
22		109
23	#define SB do {	110	#define SB do {
24	#define SE } while (0)	111	#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		112
37	#define IN_RANGE_INC(type,val,beg,end) \	113	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	114	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	115	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		116
…		…
46	#else	122	#else
47	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
49	#endif	125	#endif
50		126
51	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
52	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		129
54	typedef struct {	130	typedef struct {
55	U32 flags;	131	U32 flags;
56	U32 max_depth;	132	U32 max_depth;
57	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
58		135
59	SV *cb_object;	136	// for the incremental parser
60	HV *cb_sk_object;	137	STRLEN incr_pos; // the current offset into the text
		138	STRLEN incr_need; // minimum bytes needed to decode
		139	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
61	} CBOR;	140	} CBOR;
62		141
63	INLINE void	142	ecb_inline void
64	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
65	{	144	{
66	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	146	cbor->max_depth = 512;
68	}	147	}
69		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
		154	}
		155
70	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	157	// utility functions
72		158
73	INLINE SV *	159	ecb_inline SV *
74	get_bool (const char *name)	160	get_bool (const char *name)
75	{	161	{
76	SV *sv = get_sv (name, 1);	162	SV *sv = get_sv (name, 1);
77		163
78	SvREADONLY_on (sv);	164	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	165	SvREADONLY_on (SvRV (sv));
80		166
81	return sv;	167	return sv;
82	}	168	}
83		169
84	INLINE void	170	ecb_inline void
85	shrink (SV *sv)	171	shrink (SV *sv)
86	{	172	{
87	sv_utf8_downgrade (sv, 1);	173	sv_utf8_downgrade (sv, 1);
88		174
89	if (SvLEN (sv) > SvCUR (sv) + 1)	175	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	181	#endif
96	}	182	}
97	}	183	}
98		184
99	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
100	// fp hell	186	ecb_inline int
101		187	minimum_string_length (UV idx)
102	//TODO	188	{
		189	return idx > 23
		190	? idx > 0xffU
		191	? idx > 0xffffU
		192	? idx > 0xffffffffU
		193	? 11
		194	: 7
		195	: 5
		196	: 4
		197	: 3;
		198	}
103		199
104	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
105	// encoder	201	// encoder
106		202
107	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
112	SV *sv; // result scalar	208	SV *sv; // result scalar
113	CBOR cbor;	209	CBOR cbor;
114	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
115	} enc_t;	215	} enc_t;
116		216
117	INLINE void	217	ecb_inline void
118	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
119	{	219	{
120	if (expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	221	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	226	}
127	}	227	}
128		228
129	INLINE void	229	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	230	encode_ch (enc_t *enc, char ch)
131	{	231	{
132	need (enc, 1);	232	need (enc, 1);
133	*enc->cur++ = ch;	233	*enc->cur++ = ch;
134	}	234	}
…		…
136	static void	236	static void
137	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
138	{	238	{
139	need (enc, 9);	239	need (enc, 9);
140		240
141	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
143	else if (len < 0x100)	243	else if (ecb_expect_true (len <= 0xffU))
144	{	244	{
145	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	246	*enc->cur++ = len;
147	}	247	}
148	else if (len < 0x10000)	248	else if (len <= 0xffffU)
149	{	249	{
150	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	252	*enc->cur++ = len;
153	}	253	}
154	else if (len < 0x100000000)	254	else if (len <= 0xffffffffU)
155	{	255	{
156	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	260	*enc->cur++ = len;
161	}	261	}
162	else if (len)	262	else
163	{	263	{
164	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	272	*enc->cur++ = len;
173	}	273	}
174	}	274	}
175		275
176	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	ecb_inline void
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	284	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	if (ecb_expect_false (enc->cbor.flags & F_UTF8_STRINGS))
		286	if (!utf8)
		287	{
		288	// exceptional path for bytze strings that need to be utf8-encoded
		289	STRLEN ulen = len;
		290	U8 *p, *pend = (U8 *)str + len;
		291
		292	for (p = (U8 *)str; p < pend; ++p)
		293	ulen += *p >> 7; // count set high bits
		294
		295	encode_uint (enc, MAJOR_TEXT, ulen);
		296
		297	need (enc, ulen);
		298	for (p = (U8 *)str; p < pend; ++p)
		299	if (*p < 0x80)
		300	*enc->cur++ = *p;
		301	else
		302	{
		303	*enc->cur++ = 0xc0 + (*p >> 6);
		304	*enc->cur++ = 0x80 + (*p & 63);
		305	}
		306
		307	return;
		308	}
		309
		310	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	311	need (enc, len);
181	memcpy (enc->cur, str, len);	312	memcpy (enc->cur, str, len);
182	enc->cur += len;	313	enc->cur += len;
183	}	314	}
184		315
		316	static void
		317	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		318	{
		319	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		320	{
		321	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		322
		323	if (SvOK (*svp))
		324	{
		325	// already registered, use stringref
		326	encode_tag (enc, CBOR_TAG_STRINGREF);
		327	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		328	return;
		329	}
		330	else if (len >= minimum_string_length (enc->stringref_idx))
		331	{
		332	// register only
		333	sv_setuv (*svp, enc->stringref_idx);
		334	++enc->stringref_idx;
		335	}
		336	}
		337
		338	encode_str (enc, utf8, str, len);
		339	}
		340
185	static void encode_sv (enc_t *enc, SV *sv);	341	static void encode_sv (enc_t *enc, SV *sv);
186		342
187	static void	343	static void
188	encode_av (enc_t *enc, AV *av)	344	encode_av (enc_t *enc, AV *av)
189	{	345	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	348	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	349	croak (ERR_NESTING_EXCEEDED);
194		350
195	++enc->depth;	351	++enc->depth;
196		352
197	encode_uint (enc, 0x80, len + 1);	353	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		354
		355	if (SvMAGICAL (av))
199	for (i = 0; i <= len; ++i)	356	for (i = 0; i <= len; ++i)
200	{	357	{
201	SV **svp = av_fetch (av, i, 0);	358	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	359	encode_sv (enc, svp ? *svp : &PL_sv_undef);
203	}	360	}
		361	else
		362	for (i = 0; i <= len; ++i)
		363	{
		364	SV *sv = AvARRAY (av)[i];
		365	encode_sv (enc, sv ? sv : &PL_sv_undef);
		366	}
204		367
205	--enc->depth;	368	--enc->depth;
206	}	369	}
207		370
208	static void	371	static void
…		…
217		380
218	int pairs = hv_iterinit (hv);	381	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	382	int mg = SvMAGICAL (hv);
220		383
221	if (mg)	384	if (mg)
222	encode_ch (enc, 0xa0 | 31);	385	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	386	else
224	encode_uint (enc, 0xa0, pairs);	387	encode_uint (enc, MAJOR_MAP, pairs);
225		388
226	while ((he = hv_iternext (hv)))	389	while ((he = hv_iternext (hv)))
227	{	390	{
228	if (HeKLEN (he) == HEf_SVKEY)	391	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	392	encode_sv (enc, HeSVKEY (he));
230	else	393	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	394	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		395
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	396	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	397	}
235		398
236	if (mg)	399	if (mg)
237	encode_ch (enc, 0xe0 | 31);	400	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		401
239	--enc->depth;	402	--enc->depth;
240	}	403	}
241		404
242	// encode objects, arrays and special \0=false and \1=true values.	405	// encode objects, arrays and special \0=false and \1=true values.
243	static void	406	static void
244	encode_rv (enc_t *enc, SV *sv)	407	encode_rv (enc_t *enc, SV *sv)
245	{	408	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	409	SvGETMAGIC (sv);
		410
249	svt = SvTYPE (sv);	411	svtype svt = SvTYPE (sv);
250		412
251	if (expect_false (SvOBJECT (sv)))	413	if (ecb_expect_false (SvOBJECT (sv)))
252	{	414	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	415	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	416	? types_boolean_stash
		417	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		418	HV *error_stash = !CBOR_SLOW || types_error_stash
		419	? types_error_stash
		420	: gv_stashpv ("Types::Serialiser::Error", 1);
		421	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		422	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		424
257	if (SvSTASH (sv) == stash)	425	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	426
		427	if (stash == boolean_stash)
		428	{
		429	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		430	return;
		431	}
		432	else if (stash == error_stash)
		433	{
		434	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		435	return;
		436	}
		437	else if (stash == tagged_stash)
		438	{
		439	if (svt != SVt_PVAV)
		440	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		441
		442	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		443	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		444
		445	return;
		446	}
		447	}
		448
		449	if (ecb_expect_false (SvREFCNT (sv) > 1)
		450	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		451	{
		452	if (!enc->shareable)
		453	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		454
		455	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		456
		457	if (SvOK (*svp))
		458	{
		459	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		460	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		461	return;
		462	}
259	else	463	else
260	{	464	{
261	#if 0 //TODO	465	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	466	++enc->shareable_idx;
		467	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		468	}
		469	}
		470
		471	if (ecb_expect_false (SvOBJECT (sv)))
		472	{
		473	HV *stash = SvSTASH (sv);
		474	GV *method;
		475
		476	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	477	{
		478	dSP;
		479
		480	ENTER; SAVETMPS;
		481	PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	482	// 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)));	483	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		484
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	485	PUTBACK;
		486	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	487	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	488	SPAGAIN;
278		489
279	// catch this surprisingly common error	490	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	491	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)));	492	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		493
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	494	encode_sv (enc, POPs);
287		495
		496	PUTBACK;
		497
288	FREETMPS; LEAVE;	498	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	}	499	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	500	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	501	{
		502	dSP;
		503
		504	ENTER; SAVETMPS;
		505	SAVESTACK_POS ();
		506	PUSHMARK (SP);
		507	EXTEND (SP, 2);
		508	// we re-bless the reference to get overload and other niceties right
		509	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		510	PUSHs (sv_cbor);
		511
		512	PUTBACK;
		513	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		514	SPAGAIN;
		515
		516	// catch this surprisingly common error
		517	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		518	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		519
		520	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		521	encode_uint (enc, MAJOR_ARRAY, count + 1);
		522	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		523
		524	while (count)
		525	encode_sv (enc, SP[1 - count--]);
		526
		527	PUTBACK;
		528
		529	FREETMPS; LEAVE;
		530	}
298	else	531	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	532	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	533	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	534	}
304	else if (svt == SVt_PVHV)	535	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	536	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	537	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	538	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	539	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	540	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	encode_tag (enc, CBOR_TAG_INDIRECTION);
		542	encode_sv (enc, sv);
		543	}
328	}	544	}
329		545
330	static void	546	static void
331	encode_nv (enc_t *enc, SV *sv)	547	encode_nv (enc_t *enc, SV *sv)
332	{	548	{
333	double nv = SvNVX (sv);	549	double nv = SvNVX (sv);
334		550
335	need (enc, 9);	551	need (enc, 9);
336		552
337	if (expect_false (nv == (U32)nv))	553	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	554	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	555	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	556	else if (ecb_expect_false (nv == (float)nv))
341	{	557	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	558	uint32_t fp = ecb_float_to_binary32 (nv);
343		559
344	*enc->cur++ = 0xe0 | 26;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		561
346	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	563	fp = ecb_bswap32 (fp);
348		564
349	memcpy (enc->cur, &fp, 4);	565	memcpy (enc->cur, &fp, 4);
…		…
351	}	567	}
352	else	568	else
353	{	569	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	570	uint64_t fp = ecb_double_to_binary64 (nv);
355		571
356	*enc->cur++ = 0xe0 | 27;	572	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		573
358	if (!ecb_big_endian ())	574	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	575	fp = ecb_bswap64 (fp);
360		576
361	memcpy (enc->cur, &fp, 8);	577	memcpy (enc->cur, &fp, 8);
…		…
370		586
371	if (SvPOKp (sv))	587	if (SvPOKp (sv))
372	{	588	{
373	STRLEN len;	589	STRLEN len;
374	char *str = SvPV (sv, len);	590	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	591	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	592	}
377	else if (SvNOKp (sv))	593	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	594	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	595	else if (SvIOKp (sv))
380	{	596	{
381	if (SvIsUV (sv))	597	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	598	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	599	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	600	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	601	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	602	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	603	}
388	else if (SvROK (sv))	604	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	605	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	606	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	607	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	608	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	609	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	610	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	611	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	612	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	613	}
398		614
399	static SV *	615	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	616	encode_cbor (SV *scalar, CBOR *cbor)
401	{	617	{
402	enc_t enc;	618	enc_t enc = { 0 };
403		619
404	enc.cbor = *cbor;	620	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	621	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	622	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	623	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		624
410	SvPOK_only (enc.sv);	625	SvPOK_only (enc.sv);
		626
		627	if (cbor->flags & F_PACK_STRINGS)
		628	{
		629	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		630	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		631	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		632	}
		633
411	encode_sv (&enc, scalar);	634	encode_sv (&enc, scalar);
412		635
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	636	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	637	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		638
…		…
429	U8 *end; // end of input string	652	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	653	const char *err; // parse error, if != 0
431	CBOR cbor;	654	CBOR cbor;
432	U32 depth; // recursion depth	655	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	656	U32 maxdepth; // recursion depth limit
		657	AV *shareable;
		658	AV *stringref;
		659	SV *decode_tagged;
434	} dec_t;	660	} dec_t;
435		661
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	662	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
437		663
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	664	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
439		665
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	666	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	667	#define DEC_DEC_DEPTH --dec->depth
442		668
443	static UV	669	static UV
444	decode_uint (dec_t *dec)	670	decode_uint (dec_t *dec)
445	{	671	{
446	switch (*dec->cur & 31)	672	U8 m = *dec->cur & MINOR_MASK;
447	{	673	++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		674
453	case 24:	675	if (ecb_expect_true (m < LENGTH_EXT1))
		676	return m;
		677	else if (ecb_expect_true (m == LENGTH_EXT1))
		678	{
454	WANT (2);	679	WANT (1);
455	dec->cur += 2;	680	dec->cur += 1;
456	return dec->cur[-1];	681	return dec->cur[-1];
457		682	}
458	case 25:	683	else if (ecb_expect_true (m == LENGTH_EXT2))
		684	{
459	WANT (3);	685	WANT (2);
460	dec->cur += 3;	686	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	687	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	688	| ((UV)dec->cur[-1]);
463		689	}
464	case 26:	690	else if (ecb_expect_true (m == LENGTH_EXT4))
		691	{
465	WANT (5);	692	WANT (4);
466	dec->cur += 5;	693	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	694	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	695	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	696	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	697	| ((UV)dec->cur[-1]);
471		698	}
472	case 27:	699	else if (ecb_expect_true (m == LENGTH_EXT8))
		700	{
473	WANT (9);	701	WANT (8);
474	dec->cur += 9;	702	dec->cur += 8;
		703
		704	return
		705	#if UVSIZE < 8
		706	0
		707	#else
475	return (((UV)dec->cur[-8]) << 56)	708	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	709	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	710	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	711	| (((UV)dec->cur[-5]) << 32)
		712	#endif
479	| (((UV)dec->cur[-4]) << 24)	713	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	714	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	715	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	716	| ((UV)dec->cur[-1]);
483		717	}
484	default:	718	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	719	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		720
488	fail:	721	fail:
489	return 0;	722	return 0;
490	}	723	}
491		724
…		…
496	{	729	{
497	AV *av = newAV ();	730	AV *av = newAV ();
498		731
499	DEC_INC_DEPTH;	732	DEC_INC_DEPTH;
500		733
501	if ((*dec->cur & 31) == 31)	734	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	735	{
503	++dec->cur;	736	++dec->cur;
504		737
505	for (;;)	738	for (;;)
506	{	739	{
507	WANT (1);	740	WANT (1);
508		741
509	if (*dec->cur == 0xe0 | 31)	742	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	743	{
511	++dec->cur;	744	++dec->cur;
512	break;	745	break;
513	}	746	}
514		747
…		…
517	}	750	}
518	else	751	else
519	{	752	{
520	int i, len = decode_uint (dec);	753	int i, len = decode_uint (dec);
521		754
		755	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);	756	av_fill (av, len - 1);
523		757
524	for (i = 0; i < len; ++i)	758	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	759	AvARRAY (av)[i] = decode_sv (dec);
526	}	760	}
…		…
532	SvREFCNT_dec (av);	766	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	767	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	768	return &PL_sv_undef;
535	}	769	}
536		770
		771	static void
		772	decode_he (dec_t *dec, HV *hv)
		773	{
		774	// for speed reasons, we specialcase single-string
		775	// byte or utf-8 strings as keys, but only when !stringref
		776
		777	if (ecb_expect_true (!dec->stringref))
		778	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		779	{
		780	I32 len = decode_uint (dec);
		781	char *key = (char *)dec->cur;
		782
		783	WANT (len);
		784	dec->cur += len;
		785
		786	hv_store (hv, key, len, decode_sv (dec), 0);
		787
		788	return;
		789	}
		790	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		791	{
		792	I32 len = decode_uint (dec);
		793	char *key = (char *)dec->cur;
		794
		795	WANT (len);
		796	dec->cur += len;
		797
		798	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		799	if (!is_utf8_string (key, len))
		800	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		801
		802	hv_store (hv, key, -len, decode_sv (dec), 0);
		803
		804	return;
		805	}
		806
		807	SV *k = decode_sv (dec);
		808	SV *v = decode_sv (dec);
		809
		810	hv_store_ent (hv, k, v, 0);
		811	SvREFCNT_dec (k);
		812
		813	fail:
		814	;
		815	}
		816
537	static SV *	817	static SV *
538	decode_hv (dec_t *dec)	818	decode_hv (dec_t *dec)
539	{	819	{
540	HV *hv = newHV ();	820	HV *hv = newHV ();
541		821
542	DEC_INC_DEPTH;	822	DEC_INC_DEPTH;
543		823
544	if ((*dec->cur & 31) == 31)	824	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	825	{
546	++dec->cur;	826	++dec->cur;
547		827
548	for (;;)	828	for (;;)
549	{	829	{
550	WANT (1);	830	WANT (1);
551		831
552	if (*dec->cur == 0xe0 | 31)	832	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	833	{
554	++dec->cur;	834	++dec->cur;
555	break;	835	break;
556	}	836	}
557		837
558	SV *k = decode_sv (dec);	838	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	839	}
563	}	840	}
564	else	841	else
565	{	842	{
566	int len = decode_uint (dec);	843	int pairs = decode_uint (dec);
567		844
568	while (len--)	845	while (pairs--)
569	{	846	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	}	847	}
576		848
577	DEC_DEC_DEPTH;	849	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	850	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		851
735	fail:	852	fail:
736	SvREFCNT_dec (hv);	853	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	854	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	855	return &PL_sv_undef;
739	}	856	}
740		857
741	static SV *	858	static SV *
742	decode_str (dec_t *dec, int utf8)	859	decode_str (dec_t *dec, int utf8)
743	{	860	{
744	SV *sv;	861	SV *sv = 0;
745		862
746	if ((*dec->cur & 31) == 31)	863	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	864	{
		865	// indefinite length strings
748	++dec->cur;	866	++dec->cur;
749		867
		868	U8 major = *dec->cur & MAJOR_MISC;
		869
750	sv = newSVpvn ("", 0);	870	sv = newSVpvn ("", 0);
751		871
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	872	for (;;)
754	{	873	{
755	WANT (1);	874	WANT (1);
756		875
757	if (*dec->cur == 0xe0 | 31)	876	if ((*dec->cur - major) > LENGTH_EXT8)
		877	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	878	{
759	++dec->cur;	879	++dec->cur;
760	break;	880	break;
761	}	881	}
		882	else
		883	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		884
763	SV *sv2 = decode_sv (dec);	885	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	886
		887	WANT (len);
		888	sv_catpvn (sv, dec->cur, len);
		889	dec->cur += len;
765	}	890	}
766	}	891	}
767	else	892	else
768	{	893	{
769	STRLEN len = decode_uint (dec);	894	STRLEN len = decode_uint (dec);
770		895
771	WANT (len);	896	WANT (len);
772	sv = newSVpvn (dec->cur, len);	897	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	898	dec->cur += len;
		899
		900	if (ecb_expect_false (dec->stringref)
		901	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		902	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	903	}
775		904
776	if (utf8)	905	if (utf8)
		906	{
		907	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		908	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		909	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		910
777	SvUTF8_on (sv);	911	SvUTF8_on (sv);
		912	}
778		913
779	return sv;	914	return sv;
780		915
781	fail:	916	fail:
		917	SvREFCNT_dec (sv);
		918	return &PL_sv_undef;
		919	}
		920
		921	static SV *
		922	decode_tagged (dec_t *dec)
		923	{
		924	SV *sv = 0;
		925	UV tag = decode_uint (dec);
		926
		927	WANT (1);
		928
		929	switch (tag)
		930	{
		931	case CBOR_TAG_MAGIC:
		932	sv = decode_sv (dec);
		933	break;
		934
		935	case CBOR_TAG_INDIRECTION:
		936	sv = newRV_noinc (decode_sv (dec));
		937	break;
		938
		939	case CBOR_TAG_STRINGREF_NAMESPACE:
		940	{
		941	ENTER; SAVETMPS;
		942
		943	SAVESPTR (dec->stringref);
		944	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		945
		946	sv = decode_sv (dec);
		947
		948	FREETMPS; LEAVE;
		949	}
		950	break;
		951
		952	case CBOR_TAG_STRINGREF:
		953	{
		954	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		955	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		956
		957	UV idx = decode_uint (dec);
		958
		959	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		960	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		961
		962	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		963	}
		964	break;
		965
		966	case CBOR_TAG_VALUE_SHAREABLE:
		967	{
		968	if (ecb_expect_false (!dec->shareable))
		969	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		970
		971	if (dec->cbor.flags & F_ALLOW_CYCLES)
		972	{
		973	sv = newSV (0);
		974	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		975
		976	SV *osv = decode_sv (dec);
		977	sv_setsv (sv, osv);
		978	SvREFCNT_dec_NN (osv);
		979	}
		980	else
		981	{
		982	av_push (dec->shareable, &PL_sv_undef);
		983	int idx = AvFILLp (dec->shareable);
		984	sv = decode_sv (dec);
		985	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		986	}
		987	}
		988	break;
		989
		990	case CBOR_TAG_VALUE_SHAREDREF:
		991	{
		992	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		993	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		994
		995	UV idx = decode_uint (dec);
		996
		997	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		998	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		999
		1000	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1001
		1002	if (sv == &PL_sv_undef)
		1003	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1004	}
		1005	break;
		1006
		1007	case CBOR_TAG_PERL_OBJECT:
		1008	{
		1009	sv = decode_sv (dec);
		1010
		1011	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1012	ERR ("corrupted CBOR data (non-array perl object)");
		1013
		1014	AV *av = (AV *)SvRV (sv);
		1015	int len = av_len (av) + 1;
		1016	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1017
		1018	if (!stash)
		1019	ERR ("cannot decode perl-object (package does not exist)");
		1020
		1021	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1022
		1023	if (!method)
		1024	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1025
		1026	dSP;
		1027
		1028	ENTER; SAVETMPS;
		1029	PUSHMARK (SP);
		1030	EXTEND (SP, len + 1);
		1031	// we re-bless the reference to get overload and other niceties right
		1032	PUSHs (*av_fetch (av, 0, 1));
		1033	PUSHs (sv_cbor);
		1034
		1035	int i;
		1036
		1037	for (i = 1; i < len; ++i)
		1038	PUSHs (*av_fetch (av, i, 1));
		1039
		1040	PUTBACK;
		1041	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1042	SPAGAIN;
		1043
		1044	if (SvTRUE (ERRSV))
		1045	{
		1046	FREETMPS; LEAVE;
		1047	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1048	}
		1049
		1050	SvREFCNT_dec (sv);
		1051	sv = SvREFCNT_inc (POPs);
		1052
		1053	PUTBACK;
		1054
		1055	FREETMPS; LEAVE;
		1056	}
		1057	break;
		1058
		1059	default:
		1060	{
		1061	sv = decode_sv (dec);
		1062
		1063	dSP;
		1064	ENTER; SAVETMPS;
		1065	SAVESTACK_POS ();
		1066	PUSHMARK (SP);
		1067	EXTEND (SP, 2);
		1068	PUSHs (newSVuv (tag));
		1069	PUSHs (sv);
		1070
		1071	PUTBACK;
		1072	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1073	SPAGAIN;
		1074
		1075	if (SvTRUE (ERRSV))
		1076	{
		1077	FREETMPS; LEAVE;
		1078	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1079	}
		1080
		1081	if (count)
		1082	{
		1083	SvREFCNT_dec (sv);
		1084	sv = SvREFCNT_inc (POPs);
		1085	}
		1086	else
		1087	{
		1088	AV *av = newAV ();
		1089	av_push (av, newSVuv (tag));
		1090	av_push (av, sv);
		1091
		1092	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1093	? cbor_tagged_stash
		1094	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1095	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1096	}
		1097
		1098	PUTBACK;
		1099
		1100	FREETMPS; LEAVE;
		1101	}
		1102	break;
		1103	}
		1104
		1105	return sv;
		1106
		1107	fail:
		1108	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1109	return &PL_sv_undef;
783	}	1110	}
784		1111
785	static SV *	1112	static SV *
786	decode_sv (dec_t *dec)	1113	decode_sv (dec_t *dec)
787	{	1114	{
788	WANT (1);	1115	WANT (1);
789		1116
790	switch (*dec->cur >> 5)	1117	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1118	{
792	case 0: // unsigned int	1119	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1120	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1121	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1122	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1123	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1124	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1125	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1126
800	return decode_str (dec, 1);	1127	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)	1128	switch (*dec->cur++ & MINOR_MASK)
810	{	1129	{
811	case 20:	1130	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1131	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1132	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1133	#endif
815	return newSVsv (cbor_false);	1134	return newSVsv (types_false);
816	case 21:	1135	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1136	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1137	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1138	#endif
820	return newSVsv (cbor_true);	1139	return newSVsv (types_true);
821	case 22:	1140	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1141	return newSVsv (&PL_sv_undef);
		1142	case SIMPLE_UNDEF:
		1143	#if CBOR_SLOW
		1144	types_error = get_bool ("Types::Serialiser::error");
		1145	#endif
		1146	return newSVsv (types_error);
823		1147
824	case 25:	1148	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1149	{
		1150	WANT (2);
828		1151
		1152	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1153	dec->cur += 2;
		1154
		1155	return newSVnv (ecb_binary16_to_float (fp));
		1156	}
		1157
829	case 26:	1158	case MISC_FLOAT32:
830	{	1159	{
831	uint32_t fp;	1160	uint32_t fp;
832	WANT (4);	1161	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1162	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1163	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1166	fp = ecb_bswap32 (fp);
838		1167
839	return newSVnv (ecb_binary32_to_float (fp));	1168	return newSVnv (ecb_binary32_to_float (fp));
840	}	1169	}
841		1170
842	case 27:	1171	case MISC_FLOAT64:
843	{	1172	{
844	uint64_t fp;	1173	uint64_t fp;
845	WANT (8);	1174	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1175	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1176	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1179	fp = ecb_bswap64 (fp);
851		1180
852	return newSVnv (ecb_binary64_to_double (fp));	1181	return newSVnv (ecb_binary64_to_double (fp));
853	}	1182	}
854		1183
855	// 0..19 unassigned	1184	// 0..19 unassigned simple
856	// 24 reserved + unassigned (reserved values are not encodable)	1185	// 24 reserved + unassigned simple (reserved values are not encodable)
		1186	// 28-30 unassigned misc
		1187	// 31 break code
857	default:	1188	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1189	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1190	}
860		1191
861	break;	1192	break;
862	}	1193	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1194
920	fail:	1195	fail:
921	return &PL_sv_undef;	1196	return &PL_sv_undef;
922	}	1197	}
923		1198
924	static SV *	1199	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1200	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1201	{
927	dec_t dec;	1202	dec_t dec = { 0 };
928	SV *sv;	1203	SV *sv;
		1204	STRLEN len;
		1205	char *data = SvPVbyte (string, len);
929		1206
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1207	if (len > cbor->max_size && cbor->max_size)
959	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1208	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1209	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1210
965	dec.cbor = *cbor;	1211	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1212	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1213	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1214
974	sv = decode_sv (&dec);	1215	sv = decode_sv (&dec);
975		1216
976	if (offset_return)	1217	if (offset_return)
977	*offset_return = dec.cur;	1218	*offset_return = dec.cur;
978		1219
979	if (!(offset_return || !sv))	1220	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1221	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1222	dec.err = "garbage after CBOR object";
		1223
		1224	if (dec.err)
		1225	{
		1226	if (dec.shareable)
		1227	{
		1228	// need to break cyclic links, which whould all be in shareable
		1229	int i;
		1230	SV **svp;
		1231
		1232	for (i = av_len (dec.shareable) + 1; i--; )
		1233	if ((svp = av_fetch (dec.shareable, i, 0)))
		1234	sv_setsv (*svp, &PL_sv_undef);
		1235	}
		1236
984	SvREFCNT_dec (sv);	1237	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988
989	if (!sv)
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1238	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
		1239	}
991		1240
992	sv = sv_2mortal (sv);	1241	sv = sv_2mortal (sv);
993		1242
994	return sv;	1243	return sv;
995	}	1244	}
996		1245
		1246	/////////////////////////////////////////////////////////////////////////////
		1247	// incremental parser
		1248
		1249	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1250
		1251	// returns 0 for notyet, 1 for success or error
		1252	static int
		1253	incr_parse (CBOR *self, SV *cborstr)
		1254	{
		1255	STRLEN cur;
		1256	SvPV (cborstr, cur);
		1257
		1258	while (ecb_expect_true (self->incr_need <= cur))
		1259	{
		1260	// table of integer count bytes
		1261	static I8 incr_len[MINOR_MASK + 1] = {
		1262	0, 0, 0, 0, 0, 0, 0, 0,
		1263	0, 0, 0, 0, 0, 0, 0, 0,
		1264	0, 0, 0, 0, 0, 0, 0, 0,
		1265	1, 2, 4, 8,-1,-1,-1,-2
		1266	};
		1267
		1268	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1269	U8 m = *p & MINOR_MASK;
		1270	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1271	I8 ilen = incr_len[m];
		1272
		1273	self->incr_need = self->incr_pos + 1;
		1274
		1275	if (ecb_expect_false (ilen < 0))
		1276	{
		1277	if (m != MINOR_INDEF)
		1278	return 1; // error
		1279
		1280	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1281	{
		1282	if (count >= 0)
		1283	return 1; // error
		1284
		1285	count = 1;
		1286	}
		1287	else
		1288	{
		1289	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1290	count = -1;
		1291	}
		1292	}
		1293	else
		1294	{
		1295	self->incr_need += ilen;
		1296	if (ecb_expect_false (self->incr_need > cur))
		1297	return 0;
		1298
		1299	int major = *p >> MAJOR_SHIFT;
		1300
		1301	switch (major)
		1302	{
		1303	case MAJOR_TAG >> MAJOR_SHIFT:
		1304	++count; // tags merely prefix another value
		1305	break;
		1306
		1307	case MAJOR_BYTES >> MAJOR_SHIFT:
		1308	case MAJOR_TEXT >> MAJOR_SHIFT:
		1309	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1310	case MAJOR_MAP >> MAJOR_SHIFT:
		1311	{
		1312	UV len;
		1313
		1314	if (ecb_expect_false (ilen))
		1315	{
		1316	len = 0;
		1317
		1318	do {
		1319	len = (len << 8) | *++p;
		1320	} while (--ilen);
		1321	}
		1322	else
		1323	len = m;
		1324
		1325	switch (major)
		1326	{
		1327	case MAJOR_BYTES >> MAJOR_SHIFT:
		1328	case MAJOR_TEXT >> MAJOR_SHIFT:
		1329	self->incr_need += len;
		1330	if (ecb_expect_false (self->incr_need > cur))
		1331	return 0;
		1332
		1333	break;
		1334
		1335	case MAJOR_MAP >> MAJOR_SHIFT:
		1336	len <<= 1;
		1337	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1338	if (len)
		1339	{
		1340	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1341	count = len + 1;
		1342	}
		1343	break;
		1344	}
		1345	}
		1346	}
		1347	}
		1348
		1349	self->incr_pos = self->incr_need;
		1350
		1351	if (count > 0)
		1352	{
		1353	while (!--count)
		1354	{
		1355	if (!AvFILLp (self->incr_count))
		1356	return 1; // done
		1357
		1358	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1359	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1360	}
		1361
		1362	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1363	}
		1364	}
		1365
		1366	return 0;
		1367	}
		1368
		1369
997	/////////////////////////////////////////////////////////////////////////////	1370	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1371	// XS interface functions
999		1372
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1373	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1374
1002	BOOT:	1375	BOOT:
1003	{	1376	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1377	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1378	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1379
1007	cbor_true = get_bool ("CBOR::XS::true");	1380	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	cbor_false = get_bool ("CBOR::XS::false");	1381	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1382
		1383	types_true = get_bool ("Types::Serialiser::true" );
		1384	types_false = get_bool ("Types::Serialiser::false");
		1385	types_error = get_bool ("Types::Serialiser::error");
		1386
		1387	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1388
		1389	sv_cbor = newSVpv ("CBOR", 0);
		1390	SvREADONLY_on (sv_cbor);
1009	}	1391	}
1010		1392
1011	PROTOTYPES: DISABLE	1393	PROTOTYPES: DISABLE
1012		1394
1013	void CLONE (...)	1395	void CLONE (...)
1014	CODE:	1396	CODE:
1015	cbor_stash = 0;	1397	cbor_stash = 0;
		1398	cbor_tagged_stash = 0;
		1399	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1400	types_boolean_stash = 0;
1017		1401
1018	void new (char *klass)	1402	void new (char *klass)
1019	PPCODE:	1403	PPCODE:
1020	{	1404	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1405	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1413
1030	void shrink (CBOR *self, int enable = 1)	1414	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1415	ALIAS:
1032	shrink = F_SHRINK	1416	shrink = F_SHRINK
1033	allow_unknown = F_ALLOW_UNKNOWN	1417	allow_unknown = F_ALLOW_UNKNOWN
		1418	allow_sharing = F_ALLOW_SHARING
		1419	allow_cycles = F_ALLOW_CYCLES
		1420	pack_strings = F_PACK_STRINGS
		1421	utf8_strings = F_UTF8_STRINGS
		1422	validate_utf8 = F_VALIDATE_UTF8
1034	PPCODE:	1423	PPCODE:
1035	{	1424	{
1036	if (enable)	1425	if (enable)
1037	self->flags |= ix;	1426	self->flags |= ix;
1038	else	1427	else
…		…
1043		1432
1044	void get_shrink (CBOR *self)	1433	void get_shrink (CBOR *self)
1045	ALIAS:	1434	ALIAS:
1046	get_shrink = F_SHRINK	1435	get_shrink = F_SHRINK
1047	get_allow_unknown = F_ALLOW_UNKNOWN	1436	get_allow_unknown = F_ALLOW_UNKNOWN
		1437	get_allow_sharing = F_ALLOW_SHARING
		1438	get_allow_cycles = F_ALLOW_CYCLES
		1439	get_pack_strings = F_PACK_STRINGS
		1440	get_validate_utf8 = F_VALIDATE_UTF8
1048	PPCODE:	1441	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1442	XPUSHs (boolSV (self->flags & ix));
1050		1443
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1444	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1445	PPCODE:
…		…
1068	CODE:	1461	CODE:
1069	RETVAL = self->max_size;	1462	RETVAL = self->max_size;
1070	OUTPUT:	1463	OUTPUT:
1071	RETVAL	1464	RETVAL
1072		1465
1073	#if 0 //TODO	1466	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1467	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1468	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1469	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1470	XPUSHs (ST (0));
1082	}
1083		1471
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1472	SV *get_filter (CBOR *self)
1085	PPCODE:	1473	CODE:
1086	{	1474	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1475	OUTPUT:
1088	self->cb_sk_object = newHV ();	1476	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1477
1108	void encode (CBOR *self, SV *scalar)	1478	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1479	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1480	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1481	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1494	EXTEND (SP, 2);
1125	PUSHs (sv);	1495	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1496	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1497	}
1128		1498
		1499	void incr_parse (CBOR *self, SV *cborstr)
		1500	ALIAS:
		1501	incr_parse_multiple = 1
		1502	PPCODE:
		1503	{
		1504	if (SvUTF8 (cborstr))
		1505	sv_utf8_downgrade (cborstr, 0);
		1506
		1507	if (!self->incr_count)
		1508	{
		1509	self->incr_count = newAV ();
		1510	self->incr_pos = 0;
		1511	self->incr_need = 1;
		1512
		1513	av_push (self->incr_count, newSViv (1));
		1514	}
		1515
		1516	do
		1517	{
		1518	if (!incr_parse (self, cborstr))
		1519	{
		1520	if (self->incr_need > self->max_size && self->max_size)
		1521	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1522	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1523
		1524	break;
		1525	}
		1526
		1527	SV *sv;
		1528	char *offset;
		1529
		1530	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1531	XPUSHs (sv);
		1532
		1533	sv_chop (cborstr, offset);
		1534
		1535	av_clear (self->incr_count);
		1536	av_push (self->incr_count, newSViv (1));
		1537
		1538	self->incr_pos = 0;
		1539	self->incr_need = self->incr_pos + 1;
		1540	}
		1541	while (ix);
		1542	}
		1543
		1544	void incr_reset (CBOR *self)
		1545	CODE:
		1546	{
		1547	SvREFCNT_dec (self->incr_count);
		1548	self->incr_count = 0;
		1549	}
		1550
1129	void DESTROY (CBOR *self)	1551	void DESTROY (CBOR *self)
1130	CODE:	1552	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1553	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1554
1134	PROTOTYPES: ENABLE	1555	PROTOTYPES: ENABLE
1135		1556
1136	void encode_cbor (SV *scalar)	1557	void encode_cbor (SV *scalar)
		1558	ALIAS:
		1559	encode_cbor = 0
		1560	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1561	PPCODE:
1138	{	1562	{
1139	CBOR cbor;	1563	CBOR cbor;
1140	cbor_init (&cbor);	1564	cbor_init (&cbor);
		1565	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1566	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1567	XPUSHs (scalar);
1143	}	1568	}
1144		1569
1145	void decode_cbor (SV *cborstr)	1570	void decode_cbor (SV *cborstr)

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