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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.3 by root, Sat Oct 26 11:08:34 2013 UTC vs.
Revision 1.52 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
		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_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
16		107
17	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
18		109
19	#define SB do {	110	#define SB do {
20	#define SE } while (0)	111	#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		112
33	#define IN_RANGE_INC(type,val,beg,end) \	113	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	114	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	115	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		116
…		…
42	#else	122	#else
43	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
45	#endif	125	#endif
46		126
47	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::
48	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		129
50	typedef struct {	130	typedef struct {
51	U32 flags;	131	U32 flags;
52	U32 max_depth;	132	U32 max_depth;
53	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
54		135
55	SV *cb_object;	136	// for the incremental parser
56	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.
57	} CBOR;	140	} CBOR;
58		141
59	INLINE void	142	ecb_inline void
60	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
61	{	144	{
62	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	146	cbor->max_depth = 512;
64	}	147	}
65		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
		154	}
		155
66	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	157	// utility functions
68		158
69	INLINE SV *	159	ecb_inline SV *
70	get_bool (const char *name)	160	get_bool (const char *name)
71	{	161	{
72	SV *sv = get_sv (name, 1);	162	SV *sv = get_sv (name, 1);
73		163
74	SvREADONLY_on (sv);	164	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	165	SvREADONLY_on (SvRV (sv));
76		166
77	return sv;	167	return sv;
78	}	168	}
79		169
80	INLINE void	170	ecb_inline void
81	shrink (SV *sv)	171	shrink (SV *sv)
82	{	172	{
83	sv_utf8_downgrade (sv, 1);	173	sv_utf8_downgrade (sv, 1);
84		174
85	if (SvLEN (sv) > SvCUR (sv) + 1)	175	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	181	#endif
92	}	182	}
93	}	183	}
94		184
95	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
96	// fp hell	186	ecb_inline int
97		187	minimum_string_length (UV idx)
98	//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	}
99		199
100	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
101	// encoder	201	// encoder
102		202
103	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
108	SV *sv; // result scalar	208	SV *sv; // result scalar
109	CBOR cbor;	209	CBOR cbor;
110	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;
111	} enc_t;	215	} enc_t;
112		216
113	INLINE void	217	ecb_inline void
114	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
115	{	219	{
116	if (expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	221	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	226	}
123	}	227	}
124		228
125	INLINE void	229	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	230	encode_ch (enc_t *enc, char ch)
127	{	231	{
128	need (enc, 1);	232	need (enc, 1);
129	*enc->cur++ = ch;	233	*enc->cur++ = ch;
130	}	234	}
…		…
132	static void	236	static void
133	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
134	{	238	{
135	need (enc, 9);	239	need (enc, 9);
136		240
137	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
139	else if (len < 0x100)	243	else if (ecb_expect_true (len <= 0xffU))
140	{	244	{
141	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	246	*enc->cur++ = len;
143	}	247	}
144	else if (len < 0x10000)	248	else if (len <= 0xffffU)
145	{	249	{
146	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	252	*enc->cur++ = len;
149	}	253	}
150	else if (len < 0x100000000)	254	else if (len <= 0xffffffffU)
151	{	255	{
152	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	260	*enc->cur++ = len;
157	}	261	}
158	else if (len)	262	else
159	{	263	{
160	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	272	*enc->cur++ = len;
169	}	273	}
170	}	274	}
171		275
172	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
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	284	{
175	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);
176	need (enc, len);	311	need (enc, len);
177	memcpy (enc->cur, str, len);	312	memcpy (enc->cur, str, len);
178	enc->cur += len;	313	enc->cur += len;
179	}	314	}
180		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
181	static void encode_sv (enc_t *enc, SV *sv);	341	static void encode_sv (enc_t *enc, SV *sv);
182		342
183	static void	343	static void
184	encode_av (enc_t *enc, AV *av)	344	encode_av (enc_t *enc, AV *av)
185	{	345	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	348	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	349	croak (ERR_NESTING_EXCEEDED);
190		350
191	++enc->depth;	351	++enc->depth;
192		352
193	encode_uint (enc, 0x80, len + 1);	353	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		354
		355	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	356	for (i = 0; i <= len; ++i)
196	{	357	{
197	SV **svp = av_fetch (av, i, 0);	358	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	359	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	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	}
200		367
201	--enc->depth;	368	--enc->depth;
202	}	369	}
203		370
204	static void	371	static void
…		…
213		380
214	int pairs = hv_iterinit (hv);	381	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	382	int mg = SvMAGICAL (hv);
216		383
217	if (mg)	384	if (mg)
218	encode_ch (enc, 0xa0 | 31);	385	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	386	else
220	encode_uint (enc, 0xa0, pairs);	387	encode_uint (enc, MAJOR_MAP, pairs);
221		388
222	while ((he = hv_iternext (hv)))	389	while ((he = hv_iternext (hv)))
223	{	390	{
224	if (HeKLEN (he) == HEf_SVKEY)	391	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	392	encode_sv (enc, HeSVKEY (he));
226	else	393	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	394	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		395
229	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));
230	}	397	}
231		398
232	if (mg)	399	if (mg)
233	encode_ch (enc, 0xe0 | 31);	400	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		401
235	--enc->depth;	402	--enc->depth;
236	}	403	}
237		404
238	// encode objects, arrays and special \0=false and \1=true values.	405	// encode objects, arrays and special \0=false and \1=true values.
239	static void	406	static void
240	encode_rv (enc_t *enc, SV *sv)	407	encode_rv (enc_t *enc, SV *sv)
241	{	408	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	409	SvGETMAGIC (sv);
		410
245	svt = SvTYPE (sv);	411	svtype svt = SvTYPE (sv);
246		412
247	if (expect_false (SvOBJECT (sv)))	413	if (ecb_expect_false (SvOBJECT (sv)))
248	{	414	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	415	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? 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
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		424
253	if (SvSTASH (sv) == stash)	425	HV *stash = SvSTASH (sv);
254	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	}
255	else	463	else
256	{	464	{
257	#if 0 //TODO	465	sv_setuv (*svp, enc->shareable_idx);
258	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)))
259	{	477	{
		478	dSP;
		479
		480	ENTER; SAVETMPS;
		481	PUSHMARK (SP);
260	// 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
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)));	483	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		484
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	485	PUTBACK;
		486	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	487	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	488	SPAGAIN;
274		489
275	// catch this surprisingly common error	490	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	491	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)));	492	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		493
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	494	encode_sv (enc, POPs);
283		495
		496	PUTBACK;
		497
284	FREETMPS; LEAVE;	498	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	}	499	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	500	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	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	}
294	else	531	else
295	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",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	533	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	534	}
300	else if (svt == SVt_PVHV)	535	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	536	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	537	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	538	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	539	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	540	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	encode_tag (enc, CBOR_TAG_INDIRECTION);
		542	encode_sv (enc, sv);
		543	}
324	}	544	}
325		545
326	static void	546	static void
327	encode_nv (enc_t *enc, SV *sv)	547	encode_nv (enc_t *enc, SV *sv)
328	{	548	{
329	double nv = SvNVX (sv);	549	double nv = SvNVX (sv);
330		550
331	need (enc, 9);	551	need (enc, 9);
332		552
333	if (expect_false (nv == (U32)nv))	553	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	554	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	555	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	556	else if (ecb_expect_false (nv == (float)nv))
337	{	557	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	558	uint32_t fp = ecb_float_to_binary32 (nv);
339		559
340	*enc->cur++ = 0xe0 | 26;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		561
342	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	563	fp = ecb_bswap32 (fp);
344		564
345	memcpy (enc->cur, &fp, 4);	565	memcpy (enc->cur, &fp, 4);
…		…
347	}	567	}
348	else	568	else
349	{	569	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	570	uint64_t fp = ecb_double_to_binary64 (nv);
351		571
352	*enc->cur++ = 0xe0 | 27;	572	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		573
354	if (!ecb_big_endian ())	574	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	575	fp = ecb_bswap64 (fp);
356		576
357	memcpy (enc->cur, &fp, 8);	577	memcpy (enc->cur, &fp, 8);
…		…
366		586
367	if (SvPOKp (sv))	587	if (SvPOKp (sv))
368	{	588	{
369	STRLEN len;	589	STRLEN len;
370	char *str = SvPV (sv, len);	590	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	591	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	592	}
373	else if (SvNOKp (sv))	593	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	594	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	595	else if (SvIOKp (sv))
376	{	596	{
377	if (SvIsUV (sv))	597	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	598	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	599	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	600	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	601	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	602	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	603	}
384	else if (SvROK (sv))	604	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	605	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	606	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	607	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	608	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	609	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	610	else
391	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",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	612	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	613	}
394		614
395	static SV *	615	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	616	encode_cbor (SV *scalar, CBOR *cbor)
397	{	617	{
398	enc_t enc;	618	enc_t enc = { 0 };
399		619
400	enc.cbor = *cbor;	620	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	621	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	622	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	623	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		624
406	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
407	encode_sv (&enc, scalar);	634	encode_sv (&enc, scalar);
408		635
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	636	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*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
411		638
…		…
425	U8 *end; // end of input string	652	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	653	const char *err; // parse error, if != 0
427	CBOR cbor;	654	CBOR cbor;
428	U32 depth; // recursion depth	655	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	656	U32 maxdepth; // recursion depth limit
		657	AV *shareable;
		658	AV *stringref;
		659	SV *decode_tagged;
430	} dec_t;	660	} dec_t;
431		661
432	#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
433		663
434	#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")
435		665
436	#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)
437	#define DEC_DEC_DEPTH --dec->depth	667	#define DEC_DEC_DEPTH --dec->depth
438		668
439	static UV	669	static UV
440	decode_uint (dec_t *dec)	670	decode_uint (dec_t *dec)
441	{	671	{
442	switch (*dec->cur & 31)	672	U8 m = *dec->cur & MINOR_MASK;
443	{	673	++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		674
449	case 24:	675	if (ecb_expect_true (m < LENGTH_EXT1))
		676	return m;
		677	else if (ecb_expect_true (m == LENGTH_EXT1))
		678	{
450	WANT (2);	679	WANT (1);
451	dec->cur += 2;	680	dec->cur += 1;
452	return dec->cur[-1];	681	return dec->cur[-1];
453		682	}
454	case 25:	683	else if (ecb_expect_true (m == LENGTH_EXT2))
		684	{
455	WANT (3);	685	WANT (2);
456	dec->cur += 3;	686	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	687	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	688	| ((UV)dec->cur[-1]);
459		689	}
460	case 26:	690	else if (ecb_expect_true (m == LENGTH_EXT4))
		691	{
461	WANT (5);	692	WANT (4);
462	dec->cur += 5;	693	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	694	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	695	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	696	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	697	| ((UV)dec->cur[-1]);
467		698	}
468	case 27:	699	else if (ecb_expect_true (m == LENGTH_EXT8))
		700	{
469	WANT (9);	701	WANT (8);
470	dec->cur += 9;	702	dec->cur += 8;
		703
		704	return
		705	#if UVSIZE < 8
		706	0
		707	#else
471	return (((UV)dec->cur[-8]) << 56)	708	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	709	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	710	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	711	| (((UV)dec->cur[-5]) << 32)
		712	#endif
475	| (((UV)dec->cur[-4]) << 24)	713	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	714	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	715	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	716	| ((UV)dec->cur[-1]);
479		717	}
480	default:	718	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	719	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		720
484	fail:	721	fail:
485	return 0;	722	return 0;
486	}	723	}
487		724
…		…
492	{	729	{
493	AV *av = newAV ();	730	AV *av = newAV ();
494		731
495	DEC_INC_DEPTH;	732	DEC_INC_DEPTH;
496		733
497	if ((*dec->cur & 31) == 31)	734	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	735	{
499	++dec->cur;	736	++dec->cur;
500		737
501	for (;;)	738	for (;;)
502	{	739	{
503	WANT (1);	740	WANT (1);
504		741
505	if (*dec->cur == (0xe0 | 31))	742	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	743	{
507	++dec->cur;	744	++dec->cur;
508	break;	745	break;
509	}	746	}
510		747
…		…
513	}	750	}
514	else	751	else
515	{	752	{
516	int i, len = decode_uint (dec);	753	int i, len = decode_uint (dec);
517		754
		755	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);	756	av_fill (av, len - 1);
519		757
520	for (i = 0; i < len; ++i)	758	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	759	AvARRAY (av)[i] = decode_sv (dec);
522	}	760	}
…		…
528	SvREFCNT_dec (av);	766	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	767	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	768	return &PL_sv_undef;
531	}	769	}
532		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
533	static SV *	817	static SV *
534	decode_hv (dec_t *dec)	818	decode_hv (dec_t *dec)
535	{	819	{
536	HV *hv = newHV ();	820	HV *hv = newHV ();
537		821
538	DEC_INC_DEPTH;	822	DEC_INC_DEPTH;
539		823
540	if ((*dec->cur & 31) == 31)	824	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	825	{
542	++dec->cur;	826	++dec->cur;
543		827
544	for (;;)	828	for (;;)
545	{	829	{
546	WANT (1);	830	WANT (1);
547		831
548	if (*dec->cur == (0xe0 | 31))	832	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	833	{
550	++dec->cur;	834	++dec->cur;
551	break;	835	break;
552	}	836	}
553		837
554	SV *k = decode_sv (dec);	838	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	839	}
559	}	840	}
560	else	841	else
561	{	842	{
562	int len = decode_uint (dec);	843	int pairs = decode_uint (dec);
563		844
564	while (len--)	845	while (pairs--)
565	{	846	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	}	847	}
572		848
573	DEC_DEC_DEPTH;	849	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	850	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		851
731	fail:	852	fail:
732	SvREFCNT_dec (hv);	853	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	854	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	855	return &PL_sv_undef;
735	}	856	}
736		857
737	static SV *	858	static SV *
738	decode_str (dec_t *dec, int utf8)	859	decode_str (dec_t *dec, int utf8)
739	{	860	{
740	SV *sv;	861	SV *sv = 0;
741		862
742	if ((*dec->cur & 31) == 31)	863	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	864	{
		865	// indefinite length strings
744	++dec->cur;	866	++dec->cur;
745		867
		868	U8 major = *dec->cur & MAJOR_MISC;
		869
746	sv = newSVpvn ("", 0);	870	sv = newSVpvn ("", 0);
747		871
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	872	for (;;)
750	{	873	{
751	WANT (1);	874	WANT (1);
752		875
753	if (*dec->cur == (0xe0 | 31))	876	if ((*dec->cur - major) > LENGTH_EXT8)
		877	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	878	{
755	++dec->cur;	879	++dec->cur;
756	break;	880	break;
757	}	881	}
		882	else
		883	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		884
759	SV *sv2 = decode_sv (dec);	885	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	886
		887	WANT (len);
		888	sv_catpvn (sv, dec->cur, len);
		889	dec->cur += len;
761	}	890	}
762	}	891	}
763	else	892	else
764	{	893	{
765	STRLEN len = decode_uint (dec);	894	STRLEN len = decode_uint (dec);
766		895
767	WANT (len);	896	WANT (len);
768	sv = newSVpvn (dec->cur, len);	897	sv = newSVpvn (dec->cur, len);
769	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));
770	}	903	}
771		904
772	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
773	SvUTF8_on (sv);	911	SvUTF8_on (sv);
		912	}
774		913
775	return sv;	914	return sv;
776		915
777	fail:	916	fail:
		917	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	918	return &PL_sv_undef;
779	}	919	}
780		920
781	static SV *	921	static SV *
782	decode_tagged (dec_t *dec)	922	decode_tagged (dec_t *dec)
783	{	923	{
		924	SV *sv = 0;
784	UV tag = decode_uint (dec);	925	UV tag = decode_uint (dec);
		926
		927	WANT (1);
		928
		929	switch (tag)
		930	{
		931	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	932	sv = decode_sv (dec);
		933	break;
786		934
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	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
788	return sv;	1105	return sv;
789		1106
790	AV *av = newAV ();	1107	fail:
791	av_push (av, newSVuv (tag));	1108	SvREFCNT_dec (sv);
792	av_push (av, sv);	1109	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1110	}
795		1111
796	static SV *	1112	static SV *
797	decode_sv (dec_t *dec)	1113	decode_sv (dec_t *dec)
798	{	1114	{
799	WANT (1);	1115	WANT (1);
800		1116
801	switch (*dec->cur >> 5)	1117	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1118	{
803	case 0: // unsigned int	1119	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1120	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1121	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1122	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1123	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1124	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1125	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1126
811	return decode_str (dec, 1);	1127	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)	1128	switch (*dec->cur++ & MINOR_MASK)
820	{	1129	{
821	case 20:	1130	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1131	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1132	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1133	#endif
825	return newSVsv (cbor_false);	1134	return newSVsv (types_false);
826	case 21:	1135	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1136	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1137	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1138	#endif
830	return newSVsv (cbor_true);	1139	return newSVsv (types_true);
831	case 22:	1140	case SIMPLE_NULL:
832	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);
833		1147
834	case 25:	1148	case MISC_FLOAT16:
835	{	1149	{
836	WANT (2);	1150	WANT (2);
837		1151
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1152	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1153	dec->cur += 2;
840		1154
841	return newSVnv (ecb_binary16_to_float (fp));	1155	return newSVnv (ecb_binary16_to_float (fp));
842	}	1156	}
843		1157
844	case 26:	1158	case MISC_FLOAT32:
845	{	1159	{
846	uint32_t fp;	1160	uint32_t fp;
847	WANT (4);	1161	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1162	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1163	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1166	fp = ecb_bswap32 (fp);
853		1167
854	return newSVnv (ecb_binary32_to_float (fp));	1168	return newSVnv (ecb_binary32_to_float (fp));
855	}	1169	}
856		1170
857	case 27:	1171	case MISC_FLOAT64:
858	{	1172	{
859	uint64_t fp;	1173	uint64_t fp;
860	WANT (8);	1174	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1175	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1176	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1179	fp = ecb_bswap64 (fp);
866		1180
867	return newSVnv (ecb_binary64_to_double (fp));	1181	return newSVnv (ecb_binary64_to_double (fp));
868	}	1182	}
869		1183
870	// 0..19 unassigned	1184	// 0..19 unassigned simple
871	// 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
872	default:	1188	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1189	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1190	}
875		1191
876	break;	1192	break;
877	}	1193	}
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		1194
935	fail:	1195	fail:
936	return &PL_sv_undef;	1196	return &PL_sv_undef;
937	}	1197	}
938		1198
939	static SV *	1199	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1200	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1201	{
942	dec_t dec;	1202	dec_t dec = { 0 };
943	SV *sv;	1203	SV *sv;
		1204	STRLEN len;
		1205	char *data = SvPVbyte (string, len);
944		1206
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)	1207	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",	1208	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);	1209	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1210
980	dec.cbor = *cbor;	1211	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1212	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1213	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		1214
989	sv = decode_sv (&dec);	1215	sv = decode_sv (&dec);
990		1216
991	if (offset_return)	1217	if (offset_return)
992	*offset_return = dec.cur;	1218	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1221	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1222	dec.err = "garbage after CBOR object";
997		1223
998	if (dec.err)	1224	if (dec.err)
999	{	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
1000	SvREFCNT_dec (sv);	1237	SvREFCNT_dec (sv);
1001	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);
1002	}	1239	}
1003		1240
1004	sv = sv_2mortal (sv);	1241	sv = sv_2mortal (sv);
1005		1242
1006	return sv;	1243	return sv;
1007	}	1244	}
1008		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
1009	/////////////////////////////////////////////////////////////////////////////	1370	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1371	// XS interface functions
1011		1372
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1373	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1374
1014	BOOT:	1375	BOOT:
1015	{	1376	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1377	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1378	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1379
1019	cbor_true = get_bool ("CBOR::XS::true");	1380	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	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);
1021	}	1391	}
1022		1392
1023	PROTOTYPES: DISABLE	1393	PROTOTYPES: DISABLE
1024		1394
1025	void CLONE (...)	1395	void CLONE (...)
1026	CODE:	1396	CODE:
1027	cbor_stash = 0;	1397	cbor_stash = 0;
		1398	cbor_tagged_stash = 0;
		1399	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1400	types_boolean_stash = 0;
1029		1401
1030	void new (char *klass)	1402	void new (char *klass)
1031	PPCODE:	1403	PPCODE:
1032	{	1404	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1405	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1413
1042	void shrink (CBOR *self, int enable = 1)	1414	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1415	ALIAS:
1044	shrink = F_SHRINK	1416	shrink = F_SHRINK
1045	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
1046	PPCODE:	1423	PPCODE:
1047	{	1424	{
1048	if (enable)	1425	if (enable)
1049	self->flags |= ix;	1426	self->flags |= ix;
1050	else	1427	else
…		…
1055		1432
1056	void get_shrink (CBOR *self)	1433	void get_shrink (CBOR *self)
1057	ALIAS:	1434	ALIAS:
1058	get_shrink = F_SHRINK	1435	get_shrink = F_SHRINK
1059	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
1060	PPCODE:	1441	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1442	XPUSHs (boolSV (self->flags & ix));
1062		1443
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1444	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1445	PPCODE:
…		…
1080	CODE:	1461	CODE:
1081	RETVAL = self->max_size;	1462	RETVAL = self->max_size;
1082	OUTPUT:	1463	OUTPUT:
1083	RETVAL	1464	RETVAL
1084		1465
1085	#if 0 //TODO	1466	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1467	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1468	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1469	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1470	XPUSHs (ST (0));
1094	}
1095		1471
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1472	SV *get_filter (CBOR *self)
1097	PPCODE:	1473	CODE:
1098	{	1474	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1475	OUTPUT:
1100	self->cb_sk_object = newHV ();	1476	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		1477
1120	void encode (CBOR *self, SV *scalar)	1478	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1479	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1480	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1481	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1494	EXTEND (SP, 2);
1137	PUSHs (sv);	1495	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1496	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1497	}
1140		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
1141	void DESTROY (CBOR *self)	1551	void DESTROY (CBOR *self)
1142	CODE:	1552	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1553	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1554
1146	PROTOTYPES: ENABLE	1555	PROTOTYPES: ENABLE
1147		1556
1148	void encode_cbor (SV *scalar)	1557	void encode_cbor (SV *scalar)
		1558	ALIAS:
		1559	encode_cbor = 0
		1560	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1561	PPCODE:
1150	{	1562	{
1151	CBOR cbor;	1563	CBOR cbor;
1152	cbor_init (&cbor);	1564	cbor_init (&cbor);
		1565	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1566	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1567	XPUSHs (scalar);
1155	}	1568	}
1156		1569
1157	void decode_cbor (SV *cborstr)	1570	void decode_cbor (SV *cborstr)

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