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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.4 by root, Sat Oct 26 21:06:37 2013 UTC vs.
Revision 1.44 by root, Tue Feb 18 22:12:12 2014 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_VALIDATE_UTF8 0x00000020UL
16		106
17	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
18		108
19	#define SB do {	109	#define SB do {
20	#define SE } while (0)	110	#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		111
33	#define IN_RANGE_INC(type,val,beg,end) \	112	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	113	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	114	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		115
…		…
42	#else	121	#else
43	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
45	#endif	124	#endif
46		125
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		128
50	typedef struct {	129	typedef struct {
51	U32 flags;	130	U32 flags;
52	U32 max_depth;	131	U32 max_depth;
53	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
54		134
55	SV *cb_object;	135	// for the incremental parser
56	HV *cb_sk_object;	136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	139	} CBOR;
58		140
59	INLINE void	141	ecb_inline void
60	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
61	{	143	{
62	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	145	cbor->max_depth = 512;
64	}	146	}
65		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
		153	}
		154
66	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	156	// utility functions
68		157
69	INLINE SV *	158	ecb_inline SV *
70	get_bool (const char *name)	159	get_bool (const char *name)
71	{	160	{
72	SV *sv = get_sv (name, 1);	161	SV *sv = get_sv (name, 1);
73		162
74	SvREADONLY_on (sv);	163	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	164	SvREADONLY_on (SvRV (sv));
76		165
77	return sv;	166	return sv;
78	}	167	}
79		168
80	INLINE void	169	ecb_inline void
81	shrink (SV *sv)	170	shrink (SV *sv)
82	{	171	{
83	sv_utf8_downgrade (sv, 1);	172	sv_utf8_downgrade (sv, 1);
84		173
85	if (SvLEN (sv) > SvCUR (sv) + 1)	174	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	180	#endif
92	}	181	}
93	}	182	}
94		183
95	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
96	// fp hell	185	ecb_inline int
97		186	minimum_string_length (UV idx)
98	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
99		198
100	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
101	// encoder	200	// encoder
102		201
103	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
108	SV *sv; // result scalar	207	SV *sv; // result scalar
109	CBOR cbor;	208	CBOR cbor;
110	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
111	} enc_t;	214	} enc_t;
112		215
113	INLINE void	216	ecb_inline void
114	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
115	{	218	{
116	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	220	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	225	}
123	}	226	}
124		227
125	INLINE void	228	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
127	{	230	{
128	need (enc, 1);	231	need (enc, 1);
129	*enc->cur++ = ch;	232	*enc->cur++ = ch;
130	}	233	}
…		…
132	static void	235	static void
133	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
134	{	237	{
135	need (enc, 9);	238	need (enc, 9);
136		239
137	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
139	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
140	{	243	{
141	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	245	*enc->cur++ = len;
143	}	246	}
144	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
145	{	248	{
146	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	251	*enc->cur++ = len;
149	}	252	}
150	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
151	{	254	{
152	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	259	*enc->cur++ = len;
157	}	260	}
158	else	261	else
159	{	262	{
160	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	271	*enc->cur++ = len;
169	}	272	}
170	}	273	}
171		274
172	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	ecb_inline void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	283	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	285	need (enc, len);
177	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
178	enc->cur += len;	287	enc->cur += len;
179	}	288	}
180		289
		290	static void
		291	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
181	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
182		316
183	static void	317	static void
184	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
185	{	319	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
190		324
191	++enc->depth;	325	++enc->depth;
192		326
193	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		328
195	for (i = 0; i <= len; ++i)	329	for (i = 0; i <= len; ++i)
196	{	330	{
197	SV **svp = av_fetch (av, i, 0);	331	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	332	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
213		347
214	int pairs = hv_iterinit (hv);	348	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	349	int mg = SvMAGICAL (hv);
216		350
217	if (mg)	351	if (mg)
218	encode_ch (enc, 0xa0 | 31);	352	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	353	else
220	encode_uint (enc, 0xa0, pairs);	354	encode_uint (enc, MAJOR_MAP, pairs);
221		355
222	while ((he = hv_iternext (hv)))	356	while ((he = hv_iternext (hv)))
223	{	357	{
224	if (HeKLEN (he) == HEf_SVKEY)	358	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	359	encode_sv (enc, HeSVKEY (he));
226	else	360	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	361	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		362
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	363	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	364	}
231		365
232	if (mg)	366	if (mg)
233	encode_ch (enc, 0xe0 | 31);	367	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		368
235	--enc->depth;	369	--enc->depth;
236	}	370	}
237		371
238	// encode objects, arrays and special \0=false and \1=true values.	372	// encode objects, arrays and special \0=false and \1=true values.
239	static void	373	static void
240	encode_rv (enc_t *enc, SV *sv)	374	encode_rv (enc_t *enc, SV *sv)
241	{	375	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	376	SvGETMAGIC (sv);
		377
245	svt = SvTYPE (sv);	378	svtype svt = SvTYPE (sv);
246		379
247	if (expect_false (SvOBJECT (sv)))	380	if (ecb_expect_false (SvOBJECT (sv)))
248	{	381	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	382	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	383	? types_boolean_stash
		384	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		385	HV *error_stash = !CBOR_SLOW || types_error_stash
		386	? types_error_stash
		387	: gv_stashpv ("Types::Serialiser::Error", 1);
		388	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		389	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	390	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		391
253	if (SvSTASH (sv) == stash)	392	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	393
		394	if (stash == boolean_stash)
		395	{
		396	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		397	return;
		398	}
		399	else if (stash == error_stash)
		400	{
		401	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		402	return;
		403	}
		404	else if (stash == tagged_stash)
		405	{
		406	if (svt != SVt_PVAV)
		407	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		408
		409	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		410	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		411
		412	return;
		413	}
		414	}
		415
		416	if (ecb_expect_false (SvREFCNT (sv) > 1)
		417	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		418	{
		419	if (!enc->shareable)
		420	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		421
		422	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		423
		424	if (SvOK (*svp))
		425	{
		426	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		427	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		428	return;
		429	}
255	else	430	else
256	{	431	{
257	#if 0 //TODO	432	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	433	++enc->shareable_idx;
		434	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		435	}
		436	}
		437
		438	if (ecb_expect_false (SvOBJECT (sv)))
		439	{
		440	HV *stash = SvSTASH (sv);
		441	GV *method;
		442
		443	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	444	{
		445	dSP;
		446
		447	ENTER; SAVETMPS; PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	448	// 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)));	449	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		450
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	451	PUTBACK;
		452	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	453	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	454	SPAGAIN;
274		455
275	// catch this surprisingly common error	456	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	457	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)));	458	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		459
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	460	encode_sv (enc, POPs);
283		461
		462	PUTBACK;
		463
284	FREETMPS; LEAVE;	464	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	}	465	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	466	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	467	{
		468	dSP;
		469
		470	ENTER; SAVETMPS; PUSHMARK (SP);
		471	EXTEND (SP, 2);
		472	// we re-bless the reference to get overload and other niceties right
		473	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		474	PUSHs (sv_cbor);
		475
		476	PUTBACK;
		477	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		478	SPAGAIN;
		479
		480	// catch this surprisingly common error
		481	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		482	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		483
		484	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		485	encode_uint (enc, MAJOR_ARRAY, count + 1);
		486	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		487
		488	while (count)
		489	encode_sv (enc, SP[1 - count--]);
		490
		491	PUTBACK;
		492
		493	FREETMPS; LEAVE;
		494	}
294	else	495	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	496	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	497	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	498	}
300	else if (svt == SVt_PVHV)	499	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	500	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	501	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	502	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	503	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	504	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	505	encode_tag (enc, CBOR_TAG_INDIRECTION);
		506	encode_sv (enc, sv);
		507	}
324	}	508	}
325		509
326	static void	510	static void
327	encode_nv (enc_t *enc, SV *sv)	511	encode_nv (enc_t *enc, SV *sv)
328	{	512	{
329	double nv = SvNVX (sv);	513	double nv = SvNVX (sv);
330		514
331	need (enc, 9);	515	need (enc, 9);
332		516
333	if (expect_false (nv == (U32)nv))	517	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	518	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	519	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	520	else if (ecb_expect_false (nv == (float)nv))
337	{	521	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	522	uint32_t fp = ecb_float_to_binary32 (nv);
339		523
340	*enc->cur++ = 0xe0 | 26;	524	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		525
342	if (!ecb_big_endian ())	526	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	527	fp = ecb_bswap32 (fp);
344		528
345	memcpy (enc->cur, &fp, 4);	529	memcpy (enc->cur, &fp, 4);
…		…
347	}	531	}
348	else	532	else
349	{	533	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	534	uint64_t fp = ecb_double_to_binary64 (nv);
351		535
352	*enc->cur++ = 0xe0 | 27;	536	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		537
354	if (!ecb_big_endian ())	538	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	539	fp = ecb_bswap64 (fp);
356		540
357	memcpy (enc->cur, &fp, 8);	541	memcpy (enc->cur, &fp, 8);
…		…
366		550
367	if (SvPOKp (sv))	551	if (SvPOKp (sv))
368	{	552	{
369	STRLEN len;	553	STRLEN len;
370	char *str = SvPV (sv, len);	554	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	555	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	556	}
373	else if (SvNOKp (sv))	557	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	558	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	559	else if (SvIOKp (sv))
376	{	560	{
377	if (SvIsUV (sv))	561	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	562	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	563	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	564	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	565	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	566	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	567	}
384	else if (SvROK (sv))	568	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	569	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	570	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	571	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	572	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	573	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	574	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	575	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	576	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	577	}
394		578
395	static SV *	579	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	580	encode_cbor (SV *scalar, CBOR *cbor)
397	{	581	{
398	enc_t enc;	582	enc_t enc = { };
399		583
400	enc.cbor = *cbor;	584	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	585	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	586	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	587	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		588
406	SvPOK_only (enc.sv);	589	SvPOK_only (enc.sv);
		590
		591	if (cbor->flags & F_PACK_STRINGS)
		592	{
		593	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		594	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		595	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		596	}
		597
407	encode_sv (&enc, scalar);	598	encode_sv (&enc, scalar);
408		599
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	600	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	601	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		602
…		…
425	U8 *end; // end of input string	616	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	617	const char *err; // parse error, if != 0
427	CBOR cbor;	618	CBOR cbor;
428	U32 depth; // recursion depth	619	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	620	U32 maxdepth; // recursion depth limit
		621	AV *shareable;
		622	AV *stringref;
		623	SV *decode_tagged;
430	} dec_t;	624	} dec_t;
431		625
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	626	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		627
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	628	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		629
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	630	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	631	#define DEC_DEC_DEPTH --dec->depth
438		632
439	static UV	633	static UV
440	decode_uint (dec_t *dec)	634	decode_uint (dec_t *dec)
441	{	635	{
442	switch (*dec->cur & 31)	636	U8 m = *dec->cur & MINOR_MASK;
443	{	637	++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		638
449	case 24:	639	if (ecb_expect_true (m < LENGTH_EXT1))
		640	return m;
		641	else if (ecb_expect_true (m == LENGTH_EXT1))
		642	{
450	WANT (2);	643	WANT (1);
451	dec->cur += 2;	644	dec->cur += 1;
452	return dec->cur[-1];	645	return dec->cur[-1];
453		646	}
454	case 25:	647	else if (ecb_expect_true (m == LENGTH_EXT2))
		648	{
455	WANT (3);	649	WANT (2);
456	dec->cur += 3;	650	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	651	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	652	| ((UV)dec->cur[-1]);
459		653	}
460	case 26:	654	else if (ecb_expect_true (m == LENGTH_EXT4))
		655	{
461	WANT (5);	656	WANT (4);
462	dec->cur += 5;	657	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	658	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	659	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	660	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	661	| ((UV)dec->cur[-1]);
467		662	}
468	case 27:	663	else if (ecb_expect_true (m == LENGTH_EXT8))
		664	{
469	WANT (9);	665	WANT (8);
470	dec->cur += 9;	666	dec->cur += 8;
		667
		668	return
		669	#if UVSIZE < 8
		670	0
		671	#else
471	return (((UV)dec->cur[-8]) << 56)	672	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	673	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	674	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	675	| (((UV)dec->cur[-5]) << 32)
		676	#endif
475	| (((UV)dec->cur[-4]) << 24)	677	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	678	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	679	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	680	| ((UV)dec->cur[-1]);
479		681	}
480	default:	682	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	683	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		684
484	fail:	685	fail:
485	return 0;	686	return 0;
486	}	687	}
487		688
…		…
492	{	693	{
493	AV *av = newAV ();	694	AV *av = newAV ();
494		695
495	DEC_INC_DEPTH;	696	DEC_INC_DEPTH;
496		697
497	if ((*dec->cur & 31) == 31)	698	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	699	{
499	++dec->cur;	700	++dec->cur;
500		701
501	for (;;)	702	for (;;)
502	{	703	{
503	WANT (1);	704	WANT (1);
504		705
505	if (*dec->cur == (0xe0 | 31))	706	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	707	{
507	++dec->cur;	708	++dec->cur;
508	break;	709	break;
509	}	710	}
510		711
…		…
513	}	714	}
514	else	715	else
515	{	716	{
516	int i, len = decode_uint (dec);	717	int i, len = decode_uint (dec);
517		718
		719	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);	720	av_fill (av, len - 1);
519		721
520	for (i = 0; i < len; ++i)	722	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	723	AvARRAY (av)[i] = decode_sv (dec);
522	}	724	}
…		…
528	SvREFCNT_dec (av);	730	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	731	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	732	return &PL_sv_undef;
531	}	733	}
532		734
		735	static void
		736	decode_he (dec_t *dec, HV *hv)
		737	{
		738	// for speed reasons, we specialcase single-string
		739	// byte or utf-8 strings as keys, but only when !stringref
		740
		741	if (ecb_expect_true (!dec->stringref))
		742	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		743	{
		744	I32 len = decode_uint (dec);
		745	char *key = (char *)dec->cur;
		746
		747	dec->cur += len;
		748
		749	hv_store (hv, key, len, decode_sv (dec), 0);
		750
		751	return;
		752	}
		753	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		754	{
		755	I32 len = decode_uint (dec);
		756	char *key = (char *)dec->cur;
		757
		758	dec->cur += len;
		759
		760	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		761	if (!is_utf8_string (key, len))
		762	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		763
		764	hv_store (hv, key, -len, decode_sv (dec), 0);
		765
		766	return;
		767	}
		768
		769	SV *k = decode_sv (dec);
		770	SV *v = decode_sv (dec);
		771
		772	hv_store_ent (hv, k, v, 0);
		773	SvREFCNT_dec (k);
		774
		775	fail:
		776	;
		777	}
		778
533	static SV *	779	static SV *
534	decode_hv (dec_t *dec)	780	decode_hv (dec_t *dec)
535	{	781	{
536	HV *hv = newHV ();	782	HV *hv = newHV ();
537		783
538	DEC_INC_DEPTH;	784	DEC_INC_DEPTH;
539		785
540	if ((*dec->cur & 31) == 31)	786	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	787	{
542	++dec->cur;	788	++dec->cur;
543		789
544	for (;;)	790	for (;;)
545	{	791	{
546	WANT (1);	792	WANT (1);
547		793
548	if (*dec->cur == (0xe0 | 31))	794	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	795	{
550	++dec->cur;	796	++dec->cur;
551	break;	797	break;
552	}	798	}
553		799
554	SV *k = decode_sv (dec);	800	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	801	}
559	}	802	}
560	else	803	else
561	{	804	{
562	int len = decode_uint (dec);	805	int pairs = decode_uint (dec);
563		806
564	while (len--)	807	while (pairs--)
565	{	808	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	}	809	}
572		810
573	DEC_DEC_DEPTH;	811	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	812	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		813
731	fail:	814	fail:
732	SvREFCNT_dec (hv);	815	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	817	return &PL_sv_undef;
735	}	818	}
736		819
737	static SV *	820	static SV *
738	decode_str (dec_t *dec, int utf8)	821	decode_str (dec_t *dec, int utf8)
739	{	822	{
740	SV *sv;	823	SV *sv = 0;
741		824
742	if ((*dec->cur & 31) == 31)	825	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	826	{
		827	// indefinite length strings
744	++dec->cur;	828	++dec->cur;
745		829
		830	U8 major = *dec->cur & MAJOR_MISC;
		831
746	sv = newSVpvn ("", 0);	832	sv = newSVpvn ("", 0);
747		833
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	834	for (;;)
750	{	835	{
751	WANT (1);	836	WANT (1);
752		837
753	if (*dec->cur == (0xe0 | 31))	838	if ((*dec->cur - major) > LENGTH_EXT8)
		839	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	840	{
755	++dec->cur;	841	++dec->cur;
756	break;	842	break;
757	}	843	}
		844	else
		845	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		846
759	SV *sv2 = decode_sv (dec);	847	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	848
		849	WANT (len);
		850	sv_catpvn (sv, dec->cur, len);
		851	dec->cur += len;
761	}	852	}
762	}	853	}
763	else	854	else
764	{	855	{
765	STRLEN len = decode_uint (dec);	856	STRLEN len = decode_uint (dec);
766		857
767	WANT (len);	858	WANT (len);
768	sv = newSVpvn (dec->cur, len);	859	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	860	dec->cur += len;
		861
		862	if (ecb_expect_false (dec->stringref)
		863	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		864	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	865	}
771		866
772	if (utf8)	867	if (utf8)
		868	{
		869	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		870	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		871	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		872
773	SvUTF8_on (sv);	873	SvUTF8_on (sv);
		874	}
774		875
775	return sv;	876	return sv;
776		877
777	fail:	878	fail:
		879	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	880	return &PL_sv_undef;
779	}	881	}
780		882
781	static SV *	883	static SV *
782	decode_tagged (dec_t *dec)	884	decode_tagged (dec_t *dec)
783	{	885	{
		886	SV *sv = 0;
784	UV tag = decode_uint (dec);	887	UV tag = decode_uint (dec);
		888
		889	WANT (1);
		890
		891	switch (tag)
		892	{
		893	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	894	sv = decode_sv (dec);
		895	break;
786		896
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	897	case CBOR_TAG_INDIRECTION:
		898	sv = newRV_noinc (decode_sv (dec));
		899	break;
		900
		901	case CBOR_TAG_STRINGREF_NAMESPACE:
		902	{
		903	ENTER; SAVETMPS;
		904
		905	SAVESPTR (dec->stringref);
		906	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		907
		908	sv = decode_sv (dec);
		909
		910	FREETMPS; LEAVE;
		911	}
		912	break;
		913
		914	case CBOR_TAG_STRINGREF:
		915	{
		916	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		917	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		918
		919	UV idx = decode_uint (dec);
		920
		921	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		922	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		923
		924	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		925	}
		926	break;
		927
		928	case CBOR_TAG_VALUE_SHAREABLE:
		929	{
		930	if (ecb_expect_false (!dec->shareable))
		931	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		932
		933	if (dec->cbor.flags & F_ALLOW_CYCLES)
		934	{
		935	sv = newSV (0);
		936	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		937
		938	SV *osv = decode_sv (dec);
		939	sv_setsv (sv, osv);
		940	SvREFCNT_dec_NN (osv);
		941	}
		942	else
		943	{
		944	av_push (dec->shareable, &PL_sv_undef);
		945	int idx = AvFILLp (dec->shareable);
		946	sv = decode_sv (dec);
		947	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		948	}
		949	}
		950	break;
		951
		952	case CBOR_TAG_VALUE_SHAREDREF:
		953	{
		954	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		955	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		956
		957	UV idx = decode_uint (dec);
		958
		959	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		960	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		961
		962	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		963
		964	if (sv == &PL_sv_undef)
		965	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		966	}
		967	break;
		968
		969	case CBOR_TAG_PERL_OBJECT:
		970	{
		971	sv = decode_sv (dec);
		972
		973	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		974	ERR ("corrupted CBOR data (non-array perl object)");
		975
		976	AV *av = (AV *)SvRV (sv);
		977	int len = av_len (av) + 1;
		978	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		979
		980	if (!stash)
		981	ERR ("cannot decode perl-object (package does not exist)");
		982
		983	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		984
		985	if (!method)
		986	ERR ("cannot decode perl-object (package does not have a THAW method)");
		987
		988	dSP;
		989
		990	ENTER; SAVETMPS; PUSHMARK (SP);
		991	EXTEND (SP, len + 1);
		992	// we re-bless the reference to get overload and other niceties right
		993	PUSHs (*av_fetch (av, 0, 1));
		994	PUSHs (sv_cbor);
		995
		996	int i;
		997
		998	for (i = 1; i < len; ++i)
		999	PUSHs (*av_fetch (av, i, 1));
		1000
		1001	PUTBACK;
		1002	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1003	SPAGAIN;
		1004
		1005	if (SvTRUE (ERRSV))
		1006	{
		1007	FREETMPS; LEAVE;
		1008	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1009	}
		1010
		1011	SvREFCNT_dec (sv);
		1012	sv = SvREFCNT_inc (POPs);
		1013
		1014	PUTBACK;
		1015
		1016	FREETMPS; LEAVE;
		1017	}
		1018	break;
		1019
		1020	default:
		1021	{
		1022	sv = decode_sv (dec);
		1023
		1024	dSP;
		1025	ENTER; SAVETMPS; PUSHMARK (SP);
		1026	EXTEND (SP, 2);
		1027	PUSHs (newSVuv (tag));
		1028	PUSHs (sv);
		1029
		1030	PUTBACK;
		1031	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1032	SPAGAIN;
		1033
		1034	if (SvTRUE (ERRSV))
		1035	{
		1036	FREETMPS; LEAVE;
		1037	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1038	}
		1039
		1040	if (count)
		1041	{
		1042	SvREFCNT_dec (sv);
		1043	sv = SvREFCNT_inc (POPs);
		1044	}
		1045	else
		1046	{
		1047	AV *av = newAV ();
		1048	av_push (av, newSVuv (tag));
		1049	av_push (av, sv);
		1050
		1051	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1052	? cbor_tagged_stash
		1053	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1054	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1055	}
		1056
		1057	PUTBACK;
		1058
		1059	FREETMPS; LEAVE;
		1060	}
		1061	break;
		1062	}
		1063
788	return sv;	1064	return sv;
789		1065
790	AV *av = newAV ();	1066	fail:
791	av_push (av, newSVuv (tag));	1067	SvREFCNT_dec (sv);
792	av_push (av, sv);	1068	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1069	}
795		1070
796	static SV *	1071	static SV *
797	decode_sv (dec_t *dec)	1072	decode_sv (dec_t *dec)
798	{	1073	{
799	WANT (1);	1074	WANT (1);
800		1075
801	switch (*dec->cur >> 5)	1076	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1077	{
803	case 0: // unsigned int	1078	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1079	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1080	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1081	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1082	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1083	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1084	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1085
811	return decode_str (dec, 1);	1086	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)	1087	switch (*dec->cur++ & MINOR_MASK)
820	{	1088	{
821	case 20:	1089	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1090	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1091	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1092	#endif
825	return newSVsv (cbor_false);	1093	return newSVsv (types_false);
826	case 21:	1094	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1095	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1096	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1097	#endif
830	return newSVsv (cbor_true);	1098	return newSVsv (types_true);
831	case 22:	1099	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1100	return newSVsv (&PL_sv_undef);
		1101	case SIMPLE_UNDEF:
		1102	#if CBOR_SLOW
		1103	types_error = get_bool ("Types::Serialiser::error");
		1104	#endif
		1105	return newSVsv (types_error);
833		1106
834	case 25:	1107	case MISC_FLOAT16:
835	{	1108	{
836	WANT (2);	1109	WANT (2);
837		1110
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1111	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1112	dec->cur += 2;
840		1113
841	return newSVnv (ecb_binary16_to_float (fp));	1114	return newSVnv (ecb_binary16_to_float (fp));
842	}	1115	}
843		1116
844	case 26:	1117	case MISC_FLOAT32:
845	{	1118	{
846	uint32_t fp;	1119	uint32_t fp;
847	WANT (4);	1120	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1121	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1122	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1125	fp = ecb_bswap32 (fp);
853		1126
854	return newSVnv (ecb_binary32_to_float (fp));	1127	return newSVnv (ecb_binary32_to_float (fp));
855	}	1128	}
856		1129
857	case 27:	1130	case MISC_FLOAT64:
858	{	1131	{
859	uint64_t fp;	1132	uint64_t fp;
860	WANT (8);	1133	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1134	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1135	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1138	fp = ecb_bswap64 (fp);
866		1139
867	return newSVnv (ecb_binary64_to_double (fp));	1140	return newSVnv (ecb_binary64_to_double (fp));
868	}	1141	}
869		1142
870	// 0..19 unassigned	1143	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1144	// 24 reserved + unassigned simple (reserved values are not encodable)
		1145	// 28-30 unassigned misc
		1146	// 31 break code
872	default:	1147	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1148	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1149	}
875		1150
876	break;	1151	break;
877	}	1152	}
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		1153
935	fail:	1154	fail:
936	return &PL_sv_undef;	1155	return &PL_sv_undef;
937	}	1156	}
938		1157
939	static SV *	1158	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1159	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1160	{
942	dec_t dec;	1161	dec_t dec = { };
943	SV *sv;	1162	SV *sv;
		1163	STRLEN len;
		1164	char *data = SvPVbyte (string, len);
944		1165
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)	1166	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",	1167	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);	1168	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1169
980	dec.cbor = *cbor;	1170	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1171	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1172	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		1173
989	sv = decode_sv (&dec);	1174	sv = decode_sv (&dec);
990		1175
991	if (offset_return)	1176	if (offset_return)
992	*offset_return = dec.cur;	1177	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1180	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1181	dec.err = "garbage after CBOR object";
997		1182
998	if (dec.err)	1183	if (dec.err)
999	{	1184	{
		1185	if (dec.shareable)
		1186	{
		1187	// need to break cyclic links, which whould all be in shareable
		1188	int i;
		1189	SV **svp;
		1190
		1191	for (i = av_len (dec.shareable) + 1; i--; )
		1192	if ((svp = av_fetch (dec.shareable, i, 0)))
		1193	sv_setsv (*svp, &PL_sv_undef);
		1194	}
		1195
1000	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1197	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1198	}
1003		1199
1004	sv = sv_2mortal (sv);	1200	sv = sv_2mortal (sv);
1005		1201
1006	return sv;	1202	return sv;
1007	}	1203	}
1008		1204
		1205	/////////////////////////////////////////////////////////////////////////////
		1206	// incremental parser
		1207
		1208	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1209
		1210	// returns 0 for notyet, 1 for success or error
		1211	static int
		1212	incr_parse (CBOR *self, SV *cborstr)
		1213	{
		1214	STRLEN cur;
		1215	SvPV (cborstr, cur);
		1216
		1217	while (ecb_expect_true (self->incr_need <= cur))
		1218	{
		1219	// table of integer count bytes
		1220	static I8 incr_len[MINOR_MASK + 1] = {
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	0, 0, 0, 0, 0, 0, 0, 0,
		1224	1, 2, 4, 8,-1,-1,-1,-2
		1225	};
		1226
		1227	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1228	U8 m = *p & MINOR_MASK;
		1229	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1230	I8 ilen = incr_len[m];
		1231
		1232	self->incr_need = self->incr_pos + 1;
		1233
		1234	if (ecb_expect_false (ilen < 0))
		1235	{
		1236	if (m != MINOR_INDEF)
		1237	return 1; // error
		1238
		1239	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1240	{
		1241	if (count >= 0)
		1242	return 1; // error
		1243
		1244	count = 1;
		1245	}
		1246	else
		1247	{
		1248	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1249	count = -1;
		1250	}
		1251	}
		1252	else
		1253	{
		1254	self->incr_need += ilen;
		1255	if (ecb_expect_false (self->incr_need > cur))
		1256	return 0;
		1257
		1258	int major = *p >> MAJOR_SHIFT;
		1259
		1260	switch (major)
		1261	{
		1262	case MAJOR_BYTES >> MAJOR_SHIFT:
		1263	case MAJOR_TEXT >> MAJOR_SHIFT:
		1264	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1265	case MAJOR_MAP >> MAJOR_SHIFT:
		1266	{
		1267	UV len;
		1268
		1269	if (ecb_expect_false (ilen))
		1270	{
		1271	len = 0;
		1272
		1273	do {
		1274	len = (len << 8) | *++p;
		1275	} while (--ilen);
		1276	}
		1277	else
		1278	len = m;
		1279
		1280	switch (major)
		1281	{
		1282	case MAJOR_BYTES >> MAJOR_SHIFT:
		1283	case MAJOR_TEXT >> MAJOR_SHIFT:
		1284	self->incr_need += len;
		1285	if (ecb_expect_false (self->incr_need > cur))
		1286	return 0;
		1287
		1288	break;
		1289
		1290	case MAJOR_MAP >> MAJOR_SHIFT:
		1291	len <<= 1;
		1292	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1293	if (len)
		1294	{
		1295	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1296	count = len + 1;
		1297	}
		1298	break;
		1299	}
		1300	}
		1301	}
		1302	}
		1303
		1304	self->incr_pos = self->incr_need;
		1305
		1306	if (count > 0)
		1307	{
		1308	while (!--count)
		1309	{
		1310	if (!AvFILLp (self->incr_count))
		1311	return 1; // done
		1312
		1313	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1314	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1315	}
		1316
		1317	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1318	}
		1319	}
		1320
		1321	return 0;
		1322	}
		1323
		1324
1009	/////////////////////////////////////////////////////////////////////////////	1325	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1326	// XS interface functions
1011		1327
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1328	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1329
1014	BOOT:	1330	BOOT:
1015	{	1331	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1332	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1333	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1334
1019	cbor_true = get_bool ("CBOR::XS::true");	1335	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1336	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1337
		1338	types_true = get_bool ("Types::Serialiser::true" );
		1339	types_false = get_bool ("Types::Serialiser::false");
		1340	types_error = get_bool ("Types::Serialiser::error");
		1341
		1342	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1343
		1344	sv_cbor = newSVpv ("CBOR", 0);
		1345	SvREADONLY_on (sv_cbor);
1021	}	1346	}
1022		1347
1023	PROTOTYPES: DISABLE	1348	PROTOTYPES: DISABLE
1024		1349
1025	void CLONE (...)	1350	void CLONE (...)
1026	CODE:	1351	CODE:
1027	cbor_stash = 0;	1352	cbor_stash = 0;
		1353	cbor_tagged_stash = 0;
		1354	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1355	types_boolean_stash = 0;
1029		1356
1030	void new (char *klass)	1357	void new (char *klass)
1031	PPCODE:	1358	PPCODE:
1032	{	1359	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1360	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1368
1042	void shrink (CBOR *self, int enable = 1)	1369	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1370	ALIAS:
1044	shrink = F_SHRINK	1371	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1372	allow_unknown = F_ALLOW_UNKNOWN
		1373	allow_sharing = F_ALLOW_SHARING
		1374	allow_cycles = F_ALLOW_CYCLES
		1375	pack_strings = F_PACK_STRINGS
		1376	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1377	PPCODE:
1047	{	1378	{
1048	if (enable)	1379	if (enable)
1049	self->flags |= ix;	1380	self->flags |= ix;
1050	else	1381	else
…		…
1055		1386
1056	void get_shrink (CBOR *self)	1387	void get_shrink (CBOR *self)
1057	ALIAS:	1388	ALIAS:
1058	get_shrink = F_SHRINK	1389	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1390	get_allow_unknown = F_ALLOW_UNKNOWN
		1391	get_allow_sharing = F_ALLOW_SHARING
		1392	get_allow_cycles = F_ALLOW_CYCLES
		1393	get_pack_strings = F_PACK_STRINGS
		1394	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1395	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1396	XPUSHs (boolSV (self->flags & ix));
1062		1397
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1398	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1399	PPCODE:
…		…
1080	CODE:	1415	CODE:
1081	RETVAL = self->max_size;	1416	RETVAL = self->max_size;
1082	OUTPUT:	1417	OUTPUT:
1083	RETVAL	1418	RETVAL
1084		1419
1085	#if 0 //TODO	1420	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1421	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1422	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1423	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1424	XPUSHs (ST (0));
1094	}
1095		1425
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1426	SV *get_filter (CBOR *self)
1097	PPCODE:	1427	CODE:
1098	{	1428	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1429	OUTPUT:
1100	self->cb_sk_object = newHV ();	1430	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		1431
1120	void encode (CBOR *self, SV *scalar)	1432	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1433	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1434	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1435	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1448	EXTEND (SP, 2);
1137	PUSHs (sv);	1449	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1450	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1451	}
1140		1452
		1453	void incr_parse (CBOR *self, SV *cborstr)
		1454	ALIAS:
		1455	incr_parse_multiple = 1
		1456	PPCODE:
		1457	{
		1458	if (SvUTF8 (cborstr))
		1459	sv_utf8_downgrade (cborstr, 0);
		1460
		1461	if (!self->incr_count)
		1462	{
		1463	self->incr_count = newAV ();
		1464	self->incr_pos = 0;
		1465	self->incr_need = 1;
		1466
		1467	av_push (self->incr_count, newSViv (1));
		1468	}
		1469
		1470	do
		1471	{
		1472	if (!incr_parse (self, cborstr))
		1473	{
		1474	if (self->incr_need > self->max_size && self->max_size)
		1475	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1476	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1477
		1478	break;
		1479	}
		1480
		1481	SV *sv;
		1482	char *offset;
		1483
		1484	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1485	XPUSHs (sv);
		1486
		1487	sv_chop (cborstr, offset);
		1488
		1489	av_clear (self->incr_count);
		1490	av_push (self->incr_count, newSViv (1));
		1491
		1492	self->incr_pos = 0;
		1493	self->incr_need = self->incr_pos + 1;
		1494	}
		1495	while (ix);
		1496	}
		1497
		1498	void incr_reset (CBOR *self)
		1499	CODE:
		1500	{
		1501	SvREFCNT_dec (self->incr_count);
		1502	self->incr_count = 0;
		1503	}
		1504
1141	void DESTROY (CBOR *self)	1505	void DESTROY (CBOR *self)
1142	CODE:	1506	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1507	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1508
1146	PROTOTYPES: ENABLE	1509	PROTOTYPES: ENABLE
1147		1510
1148	void encode_cbor (SV *scalar)	1511	void encode_cbor (SV *scalar)
		1512	ALIAS:
		1513	encode_cbor = 0
		1514	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1515	PPCODE:
1150	{	1516	{
1151	CBOR cbor;	1517	CBOR cbor;
1152	cbor_init (&cbor);	1518	cbor_init (&cbor);
		1519	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1520	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1521	XPUSHs (scalar);
1155	}	1522	}
1156		1523
1157	void decode_cbor (SV *cborstr)	1524	void decode_cbor (SV *cborstr)

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