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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 1.45 by root, Sun Dec 14 05:48:39 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
		329	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
196	{	331	{
197	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	encode_sv (enc, AvARRAY (av)[i]);
200		338
201	--enc->depth;	339	--enc->depth;
202	}	340	}
203		341
204	static void	342	static void
…		…
213		351
214	int pairs = hv_iterinit (hv);	352	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	353	int mg = SvMAGICAL (hv);
216		354
217	if (mg)	355	if (mg)
218	encode_ch (enc, 0xa0 | 31);	356	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	357	else
220	encode_uint (enc, 0xa0, pairs);	358	encode_uint (enc, MAJOR_MAP, pairs);
221		359
222	while ((he = hv_iternext (hv)))	360	while ((he = hv_iternext (hv)))
223	{	361	{
224	if (HeKLEN (he) == HEf_SVKEY)	362	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	363	encode_sv (enc, HeSVKEY (he));
226	else	364	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	365	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		366
229	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	367	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
230	}	368	}
231		369
232	if (mg)	370	if (mg)
233	encode_ch (enc, 0xe0 | 31);	371	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		372
235	--enc->depth;	373	--enc->depth;
236	}	374	}
237		375
238	// encode objects, arrays and special \0=false and \1=true values.	376	// encode objects, arrays and special \0=false and \1=true values.
239	static void	377	static void
240	encode_rv (enc_t *enc, SV *sv)	378	encode_rv (enc_t *enc, SV *sv)
241	{	379	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	380	SvGETMAGIC (sv);
		381
245	svt = SvTYPE (sv);	382	svtype svt = SvTYPE (sv);
246		383
247	if (expect_false (SvOBJECT (sv)))	384	if (ecb_expect_false (SvOBJECT (sv)))
248	{	385	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	386	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? cbor_boolean_stash	387	? types_boolean_stash
		388	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		389	HV *error_stash = !CBOR_SLOW || types_error_stash
		390	? types_error_stash
		391	: gv_stashpv ("Types::Serialiser::Error", 1);
		392	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		393	? cbor_tagged_stash
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	394	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		395
253	if (SvSTASH (sv) == stash)	396	HV *stash = SvSTASH (sv);
254	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	397
		398	if (stash == boolean_stash)
		399	{
		400	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		401	return;
		402	}
		403	else if (stash == error_stash)
		404	{
		405	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		406	return;
		407	}
		408	else if (stash == tagged_stash)
		409	{
		410	if (svt != SVt_PVAV)
		411	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		412
		413	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		414	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		415
		416	return;
		417	}
		418	}
		419
		420	if (ecb_expect_false (SvREFCNT (sv) > 1)
		421	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		422	{
		423	if (!enc->shareable)
		424	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		425
		426	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		427
		428	if (SvOK (*svp))
		429	{
		430	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		431	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		432	return;
		433	}
255	else	434	else
256	{	435	{
257	#if 0 //TODO	436	sv_setuv (*svp, enc->shareable_idx);
258	if (enc->cbor.flags & F_CONV_BLESSED)	437	++enc->shareable_idx;
		438	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		439	}
		440	}
		441
		442	if (ecb_expect_false (SvOBJECT (sv)))
		443	{
		444	HV *stash = SvSTASH (sv);
		445	GV *method;
		446
		447	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
259	{	448	{
		449	dSP;
		450
		451	ENTER; SAVETMPS; PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	452	// 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)));	453	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		454
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	455	PUTBACK;
		456	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	457	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	458	SPAGAIN;
274		459
275	// catch this surprisingly common error	460	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	461	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)));	462	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		463
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	464	encode_sv (enc, POPs);
283		465
		466	PUTBACK;
		467
284	FREETMPS; LEAVE;	468	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	}	469	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	470	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	471	{
		472	dSP;
		473
		474	ENTER; SAVETMPS; PUSHMARK (SP);
		475	EXTEND (SP, 2);
		476	// we re-bless the reference to get overload and other niceties right
		477	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		478	PUSHs (sv_cbor);
		479
		480	PUTBACK;
		481	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		482	SPAGAIN;
		483
		484	// catch this surprisingly common error
		485	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		486	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		487
		488	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		489	encode_uint (enc, MAJOR_ARRAY, count + 1);
		490	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		491
		492	while (count)
		493	encode_sv (enc, SP[1 - count--]);
		494
		495	PUTBACK;
		496
		497	FREETMPS; LEAVE;
		498	}
294	else	499	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	500	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	501	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	502	}
300	else if (svt == SVt_PVHV)	503	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	504	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	505	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	506	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	507	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	508	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	509	encode_tag (enc, CBOR_TAG_INDIRECTION);
		510	encode_sv (enc, sv);
		511	}
324	}	512	}
325		513
326	static void	514	static void
327	encode_nv (enc_t *enc, SV *sv)	515	encode_nv (enc_t *enc, SV *sv)
328	{	516	{
329	double nv = SvNVX (sv);	517	double nv = SvNVX (sv);
330		518
331	need (enc, 9);	519	need (enc, 9);
332		520
333	if (expect_false (nv == (U32)nv))	521	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	522	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	523	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	524	else if (ecb_expect_false (nv == (float)nv))
337	{	525	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	526	uint32_t fp = ecb_float_to_binary32 (nv);
339		527
340	*enc->cur++ = 0xe0 | 26;	528	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		529
342	if (!ecb_big_endian ())	530	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	531	fp = ecb_bswap32 (fp);
344		532
345	memcpy (enc->cur, &fp, 4);	533	memcpy (enc->cur, &fp, 4);
…		…
347	}	535	}
348	else	536	else
349	{	537	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	538	uint64_t fp = ecb_double_to_binary64 (nv);
351		539
352	*enc->cur++ = 0xe0 | 27;	540	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		541
354	if (!ecb_big_endian ())	542	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	543	fp = ecb_bswap64 (fp);
356		544
357	memcpy (enc->cur, &fp, 8);	545	memcpy (enc->cur, &fp, 8);
…		…
366		554
367	if (SvPOKp (sv))	555	if (SvPOKp (sv))
368	{	556	{
369	STRLEN len;	557	STRLEN len;
370	char *str = SvPV (sv, len);	558	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	559	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	560	}
373	else if (SvNOKp (sv))	561	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	562	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	563	else if (SvIOKp (sv))
376	{	564	{
377	if (SvIsUV (sv))	565	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	566	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	567	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	568	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	569	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	570	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	571	}
384	else if (SvROK (sv))	572	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	573	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	574	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	575	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	576	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	577	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	578	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	579	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	580	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	581	}
394		582
395	static SV *	583	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	584	encode_cbor (SV *scalar, CBOR *cbor)
397	{	585	{
398	enc_t enc;	586	enc_t enc = { };
399		587
400	enc.cbor = *cbor;	588	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	589	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	590	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	591	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		592
406	SvPOK_only (enc.sv);	593	SvPOK_only (enc.sv);
		594
		595	if (cbor->flags & F_PACK_STRINGS)
		596	{
		597	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		598	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		599	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		600	}
		601
407	encode_sv (&enc, scalar);	602	encode_sv (&enc, scalar);
408		603
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	604	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	605	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		606
…		…
425	U8 *end; // end of input string	620	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	621	const char *err; // parse error, if != 0
427	CBOR cbor;	622	CBOR cbor;
428	U32 depth; // recursion depth	623	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	624	U32 maxdepth; // recursion depth limit
		625	AV *shareable;
		626	AV *stringref;
		627	SV *decode_tagged;
430	} dec_t;	628	} dec_t;
431		629
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	630	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		631
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	632	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		633
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	634	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	635	#define DEC_DEC_DEPTH --dec->depth
438		636
439	static UV	637	static UV
440	decode_uint (dec_t *dec)	638	decode_uint (dec_t *dec)
441	{	639	{
442	switch (*dec->cur & 31)	640	U8 m = *dec->cur & MINOR_MASK;
443	{	641	++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		642
449	case 24:	643	if (ecb_expect_true (m < LENGTH_EXT1))
		644	return m;
		645	else if (ecb_expect_true (m == LENGTH_EXT1))
		646	{
450	WANT (2);	647	WANT (1);
451	dec->cur += 2;	648	dec->cur += 1;
452	return dec->cur[-1];	649	return dec->cur[-1];
453		650	}
454	case 25:	651	else if (ecb_expect_true (m == LENGTH_EXT2))
		652	{
455	WANT (3);	653	WANT (2);
456	dec->cur += 3;	654	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	655	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	656	| ((UV)dec->cur[-1]);
459		657	}
460	case 26:	658	else if (ecb_expect_true (m == LENGTH_EXT4))
		659	{
461	WANT (5);	660	WANT (4);
462	dec->cur += 5;	661	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	662	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	663	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	664	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	665	| ((UV)dec->cur[-1]);
467		666	}
468	case 27:	667	else if (ecb_expect_true (m == LENGTH_EXT8))
		668	{
469	WANT (9);	669	WANT (8);
470	dec->cur += 9;	670	dec->cur += 8;
		671
		672	return
		673	#if UVSIZE < 8
		674	0
		675	#else
471	return (((UV)dec->cur[-8]) << 56)	676	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	677	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	678	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	679	| (((UV)dec->cur[-5]) << 32)
		680	#endif
475	| (((UV)dec->cur[-4]) << 24)	681	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	682	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	683	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	684	| ((UV)dec->cur[-1]);
479		685	}
480	default:	686	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	687	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		688
484	fail:	689	fail:
485	return 0;	690	return 0;
486	}	691	}
487		692
…		…
492	{	697	{
493	AV *av = newAV ();	698	AV *av = newAV ();
494		699
495	DEC_INC_DEPTH;	700	DEC_INC_DEPTH;
496		701
497	if ((*dec->cur & 31) == 31)	702	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	703	{
499	++dec->cur;	704	++dec->cur;
500		705
501	for (;;)	706	for (;;)
502	{	707	{
503	WANT (1);	708	WANT (1);
504		709
505	if (*dec->cur == (0xe0 | 31))	710	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	711	{
507	++dec->cur;	712	++dec->cur;
508	break;	713	break;
509	}	714	}
510		715
…		…
513	}	718	}
514	else	719	else
515	{	720	{
516	int i, len = decode_uint (dec);	721	int i, len = decode_uint (dec);
517		722
		723	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);	724	av_fill (av, len - 1);
519		725
520	for (i = 0; i < len; ++i)	726	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	727	AvARRAY (av)[i] = decode_sv (dec);
522	}	728	}
…		…
528	SvREFCNT_dec (av);	734	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	735	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	736	return &PL_sv_undef;
531	}	737	}
532		738
		739	static void
		740	decode_he (dec_t *dec, HV *hv)
		741	{
		742	// for speed reasons, we specialcase single-string
		743	// byte or utf-8 strings as keys, but only when !stringref
		744
		745	if (ecb_expect_true (!dec->stringref))
		746	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		747	{
		748	I32 len = decode_uint (dec);
		749	char *key = (char *)dec->cur;
		750
		751	dec->cur += len;
		752
		753	hv_store (hv, key, len, decode_sv (dec), 0);
		754
		755	return;
		756	}
		757	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		758	{
		759	I32 len = decode_uint (dec);
		760	char *key = (char *)dec->cur;
		761
		762	dec->cur += len;
		763
		764	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		765	if (!is_utf8_string (key, len))
		766	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		767
		768	hv_store (hv, key, -len, decode_sv (dec), 0);
		769
		770	return;
		771	}
		772
		773	SV *k = decode_sv (dec);
		774	SV *v = decode_sv (dec);
		775
		776	hv_store_ent (hv, k, v, 0);
		777	SvREFCNT_dec (k);
		778
		779	fail:
		780	;
		781	}
		782
533	static SV *	783	static SV *
534	decode_hv (dec_t *dec)	784	decode_hv (dec_t *dec)
535	{	785	{
536	HV *hv = newHV ();	786	HV *hv = newHV ();
537		787
538	DEC_INC_DEPTH;	788	DEC_INC_DEPTH;
539		789
540	if ((*dec->cur & 31) == 31)	790	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	791	{
542	++dec->cur;	792	++dec->cur;
543		793
544	for (;;)	794	for (;;)
545	{	795	{
546	WANT (1);	796	WANT (1);
547		797
548	if (*dec->cur == (0xe0 | 31))	798	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	799	{
550	++dec->cur;	800	++dec->cur;
551	break;	801	break;
552	}	802	}
553		803
554	SV *k = decode_sv (dec);	804	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	805	}
559	}	806	}
560	else	807	else
561	{	808	{
562	int len = decode_uint (dec);	809	int pairs = decode_uint (dec);
563		810
564	while (len--)	811	while (pairs--)
565	{	812	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	}	813	}
572		814
573	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	816	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		817
731	fail:	818	fail:
732	SvREFCNT_dec (hv);	819	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	821	return &PL_sv_undef;
735	}	822	}
736		823
737	static SV *	824	static SV *
738	decode_str (dec_t *dec, int utf8)	825	decode_str (dec_t *dec, int utf8)
739	{	826	{
740	SV *sv;	827	SV *sv = 0;
741		828
742	if ((*dec->cur & 31) == 31)	829	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	830	{
		831	// indefinite length strings
744	++dec->cur;	832	++dec->cur;
745		833
		834	U8 major = *dec->cur & MAJOR_MISC;
		835
746	sv = newSVpvn ("", 0);	836	sv = newSVpvn ("", 0);
747		837
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	838	for (;;)
750	{	839	{
751	WANT (1);	840	WANT (1);
752		841
753	if (*dec->cur == (0xe0 | 31))	842	if ((*dec->cur - major) > LENGTH_EXT8)
		843	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	844	{
755	++dec->cur;	845	++dec->cur;
756	break;	846	break;
757	}	847	}
		848	else
		849	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		850
759	SV *sv2 = decode_sv (dec);	851	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	852
		853	WANT (len);
		854	sv_catpvn (sv, dec->cur, len);
		855	dec->cur += len;
761	}	856	}
762	}	857	}
763	else	858	else
764	{	859	{
765	STRLEN len = decode_uint (dec);	860	STRLEN len = decode_uint (dec);
766		861
767	WANT (len);	862	WANT (len);
768	sv = newSVpvn (dec->cur, len);	863	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	864	dec->cur += len;
		865
		866	if (ecb_expect_false (dec->stringref)
		867	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		868	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	869	}
771		870
772	if (utf8)	871	if (utf8)
		872	{
		873	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		874	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		875	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		876
773	SvUTF8_on (sv);	877	SvUTF8_on (sv);
		878	}
774		879
775	return sv;	880	return sv;
776		881
777	fail:	882	fail:
		883	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	884	return &PL_sv_undef;
779	}	885	}
780		886
781	static SV *	887	static SV *
782	decode_tagged (dec_t *dec)	888	decode_tagged (dec_t *dec)
783	{	889	{
		890	SV *sv = 0;
784	UV tag = decode_uint (dec);	891	UV tag = decode_uint (dec);
		892
		893	WANT (1);
		894
		895	switch (tag)
		896	{
		897	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	898	sv = decode_sv (dec);
		899	break;
786		900
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	901	case CBOR_TAG_INDIRECTION:
		902	sv = newRV_noinc (decode_sv (dec));
		903	break;
		904
		905	case CBOR_TAG_STRINGREF_NAMESPACE:
		906	{
		907	ENTER; SAVETMPS;
		908
		909	SAVESPTR (dec->stringref);
		910	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		911
		912	sv = decode_sv (dec);
		913
		914	FREETMPS; LEAVE;
		915	}
		916	break;
		917
		918	case CBOR_TAG_STRINGREF:
		919	{
		920	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		921	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		922
		923	UV idx = decode_uint (dec);
		924
		925	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		926	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		927
		928	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		929	}
		930	break;
		931
		932	case CBOR_TAG_VALUE_SHAREABLE:
		933	{
		934	if (ecb_expect_false (!dec->shareable))
		935	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		936
		937	if (dec->cbor.flags & F_ALLOW_CYCLES)
		938	{
		939	sv = newSV (0);
		940	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		941
		942	SV *osv = decode_sv (dec);
		943	sv_setsv (sv, osv);
		944	SvREFCNT_dec_NN (osv);
		945	}
		946	else
		947	{
		948	av_push (dec->shareable, &PL_sv_undef);
		949	int idx = AvFILLp (dec->shareable);
		950	sv = decode_sv (dec);
		951	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		952	}
		953	}
		954	break;
		955
		956	case CBOR_TAG_VALUE_SHAREDREF:
		957	{
		958	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		959	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		960
		961	UV idx = decode_uint (dec);
		962
		963	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		964	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		965
		966	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		967
		968	if (sv == &PL_sv_undef)
		969	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		970	}
		971	break;
		972
		973	case CBOR_TAG_PERL_OBJECT:
		974	{
		975	sv = decode_sv (dec);
		976
		977	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		978	ERR ("corrupted CBOR data (non-array perl object)");
		979
		980	AV *av = (AV *)SvRV (sv);
		981	int len = av_len (av) + 1;
		982	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		983
		984	if (!stash)
		985	ERR ("cannot decode perl-object (package does not exist)");
		986
		987	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		988
		989	if (!method)
		990	ERR ("cannot decode perl-object (package does not have a THAW method)");
		991
		992	dSP;
		993
		994	ENTER; SAVETMPS; PUSHMARK (SP);
		995	EXTEND (SP, len + 1);
		996	// we re-bless the reference to get overload and other niceties right
		997	PUSHs (*av_fetch (av, 0, 1));
		998	PUSHs (sv_cbor);
		999
		1000	int i;
		1001
		1002	for (i = 1; i < len; ++i)
		1003	PUSHs (*av_fetch (av, i, 1));
		1004
		1005	PUTBACK;
		1006	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1007	SPAGAIN;
		1008
		1009	if (SvTRUE (ERRSV))
		1010	{
		1011	FREETMPS; LEAVE;
		1012	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1013	}
		1014
		1015	SvREFCNT_dec (sv);
		1016	sv = SvREFCNT_inc (POPs);
		1017
		1018	PUTBACK;
		1019
		1020	FREETMPS; LEAVE;
		1021	}
		1022	break;
		1023
		1024	default:
		1025	{
		1026	sv = decode_sv (dec);
		1027
		1028	dSP;
		1029	ENTER; SAVETMPS; PUSHMARK (SP);
		1030	EXTEND (SP, 2);
		1031	PUSHs (newSVuv (tag));
		1032	PUSHs (sv);
		1033
		1034	PUTBACK;
		1035	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1036	SPAGAIN;
		1037
		1038	if (SvTRUE (ERRSV))
		1039	{
		1040	FREETMPS; LEAVE;
		1041	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1042	}
		1043
		1044	if (count)
		1045	{
		1046	SvREFCNT_dec (sv);
		1047	sv = SvREFCNT_inc (POPs);
		1048	}
		1049	else
		1050	{
		1051	AV *av = newAV ();
		1052	av_push (av, newSVuv (tag));
		1053	av_push (av, sv);
		1054
		1055	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1056	? cbor_tagged_stash
		1057	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1058	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1059	}
		1060
		1061	PUTBACK;
		1062
		1063	FREETMPS; LEAVE;
		1064	}
		1065	break;
		1066	}
		1067
788	return sv;	1068	return sv;
789		1069
790	AV *av = newAV ();	1070	fail:
791	av_push (av, newSVuv (tag));	1071	SvREFCNT_dec (sv);
792	av_push (av, sv);	1072	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1073	}
795		1074
796	static SV *	1075	static SV *
797	decode_sv (dec_t *dec)	1076	decode_sv (dec_t *dec)
798	{	1077	{
799	WANT (1);	1078	WANT (1);
800		1079
801	switch (*dec->cur >> 5)	1080	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1081	{
803	case 0: // unsigned int	1082	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1083	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1084	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1085	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1086	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1087	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1088	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1089
811	return decode_str (dec, 1);	1090	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)	1091	switch (*dec->cur++ & MINOR_MASK)
820	{	1092	{
821	case 20:	1093	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1094	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1095	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1096	#endif
825	return newSVsv (cbor_false);	1097	return newSVsv (types_false);
826	case 21:	1098	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1099	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1100	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1101	#endif
830	return newSVsv (cbor_true);	1102	return newSVsv (types_true);
831	case 22:	1103	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1104	return newSVsv (&PL_sv_undef);
		1105	case SIMPLE_UNDEF:
		1106	#if CBOR_SLOW
		1107	types_error = get_bool ("Types::Serialiser::error");
		1108	#endif
		1109	return newSVsv (types_error);
833		1110
834	case 25:	1111	case MISC_FLOAT16:
835	{	1112	{
836	WANT (2);	1113	WANT (2);
837		1114
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1115	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1116	dec->cur += 2;
840		1117
841	return newSVnv (ecb_binary16_to_float (fp));	1118	return newSVnv (ecb_binary16_to_float (fp));
842	}	1119	}
843		1120
844	case 26:	1121	case MISC_FLOAT32:
845	{	1122	{
846	uint32_t fp;	1123	uint32_t fp;
847	WANT (4);	1124	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1125	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1126	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1129	fp = ecb_bswap32 (fp);
853		1130
854	return newSVnv (ecb_binary32_to_float (fp));	1131	return newSVnv (ecb_binary32_to_float (fp));
855	}	1132	}
856		1133
857	case 27:	1134	case MISC_FLOAT64:
858	{	1135	{
859	uint64_t fp;	1136	uint64_t fp;
860	WANT (8);	1137	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1138	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1139	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1142	fp = ecb_bswap64 (fp);
866		1143
867	return newSVnv (ecb_binary64_to_double (fp));	1144	return newSVnv (ecb_binary64_to_double (fp));
868	}	1145	}
869		1146
870	// 0..19 unassigned	1147	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1148	// 24 reserved + unassigned simple (reserved values are not encodable)
		1149	// 28-30 unassigned misc
		1150	// 31 break code
872	default:	1151	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1152	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1153	}
875		1154
876	break;	1155	break;
877	}	1156	}
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		1157
935	fail:	1158	fail:
936	return &PL_sv_undef;	1159	return &PL_sv_undef;
937	}	1160	}
938		1161
939	static SV *	1162	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1163	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1164	{
942	dec_t dec;	1165	dec_t dec = { };
943	SV *sv;	1166	SV *sv;
		1167	STRLEN len;
		1168	char *data = SvPVbyte (string, len);
944		1169
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)	1170	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",	1171	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);	1172	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1173
980	dec.cbor = *cbor;	1174	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1175	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1176	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		1177
989	sv = decode_sv (&dec);	1178	sv = decode_sv (&dec);
990		1179
991	if (offset_return)	1180	if (offset_return)
992	*offset_return = dec.cur;	1181	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1184	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1185	dec.err = "garbage after CBOR object";
997		1186
998	if (dec.err)	1187	if (dec.err)
999	{	1188	{
		1189	if (dec.shareable)
		1190	{
		1191	// need to break cyclic links, which whould all be in shareable
		1192	int i;
		1193	SV **svp;
		1194
		1195	for (i = av_len (dec.shareable) + 1; i--; )
		1196	if ((svp = av_fetch (dec.shareable, i, 0)))
		1197	sv_setsv (*svp, &PL_sv_undef);
		1198	}
		1199
1000	SvREFCNT_dec (sv);	1200	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1201	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1202	}
1003		1203
1004	sv = sv_2mortal (sv);	1204	sv = sv_2mortal (sv);
1005		1205
1006	return sv;	1206	return sv;
1007	}	1207	}
1008		1208
		1209	/////////////////////////////////////////////////////////////////////////////
		1210	// incremental parser
		1211
		1212	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1213
		1214	// returns 0 for notyet, 1 for success or error
		1215	static int
		1216	incr_parse (CBOR *self, SV *cborstr)
		1217	{
		1218	STRLEN cur;
		1219	SvPV (cborstr, cur);
		1220
		1221	while (ecb_expect_true (self->incr_need <= cur))
		1222	{
		1223	// table of integer count bytes
		1224	static I8 incr_len[MINOR_MASK + 1] = {
		1225	0, 0, 0, 0, 0, 0, 0, 0,
		1226	0, 0, 0, 0, 0, 0, 0, 0,
		1227	0, 0, 0, 0, 0, 0, 0, 0,
		1228	1, 2, 4, 8,-1,-1,-1,-2
		1229	};
		1230
		1231	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1232	U8 m = *p & MINOR_MASK;
		1233	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1234	I8 ilen = incr_len[m];
		1235
		1236	self->incr_need = self->incr_pos + 1;
		1237
		1238	if (ecb_expect_false (ilen < 0))
		1239	{
		1240	if (m != MINOR_INDEF)
		1241	return 1; // error
		1242
		1243	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1244	{
		1245	if (count >= 0)
		1246	return 1; // error
		1247
		1248	count = 1;
		1249	}
		1250	else
		1251	{
		1252	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1253	count = -1;
		1254	}
		1255	}
		1256	else
		1257	{
		1258	self->incr_need += ilen;
		1259	if (ecb_expect_false (self->incr_need > cur))
		1260	return 0;
		1261
		1262	int major = *p >> MAJOR_SHIFT;
		1263
		1264	switch (major)
		1265	{
		1266	case MAJOR_BYTES >> MAJOR_SHIFT:
		1267	case MAJOR_TEXT >> MAJOR_SHIFT:
		1268	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1269	case MAJOR_MAP >> MAJOR_SHIFT:
		1270	{
		1271	UV len;
		1272
		1273	if (ecb_expect_false (ilen))
		1274	{
		1275	len = 0;
		1276
		1277	do {
		1278	len = (len << 8) | *++p;
		1279	} while (--ilen);
		1280	}
		1281	else
		1282	len = m;
		1283
		1284	switch (major)
		1285	{
		1286	case MAJOR_BYTES >> MAJOR_SHIFT:
		1287	case MAJOR_TEXT >> MAJOR_SHIFT:
		1288	self->incr_need += len;
		1289	if (ecb_expect_false (self->incr_need > cur))
		1290	return 0;
		1291
		1292	break;
		1293
		1294	case MAJOR_MAP >> MAJOR_SHIFT:
		1295	len <<= 1;
		1296	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1297	if (len)
		1298	{
		1299	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1300	count = len + 1;
		1301	}
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307
		1308	self->incr_pos = self->incr_need;
		1309
		1310	if (count > 0)
		1311	{
		1312	while (!--count)
		1313	{
		1314	if (!AvFILLp (self->incr_count))
		1315	return 1; // done
		1316
		1317	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1318	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1319	}
		1320
		1321	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1322	}
		1323	}
		1324
		1325	return 0;
		1326	}
		1327
		1328
1009	/////////////////////////////////////////////////////////////////////////////	1329	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1330	// XS interface functions
1011		1331
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1332	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1333
1014	BOOT:	1334	BOOT:
1015	{	1335	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1336	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1337	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1338
1019	cbor_true = get_bool ("CBOR::XS::true");	1339	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1340	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1341
		1342	types_true = get_bool ("Types::Serialiser::true" );
		1343	types_false = get_bool ("Types::Serialiser::false");
		1344	types_error = get_bool ("Types::Serialiser::error");
		1345
		1346	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1347
		1348	sv_cbor = newSVpv ("CBOR", 0);
		1349	SvREADONLY_on (sv_cbor);
1021	}	1350	}
1022		1351
1023	PROTOTYPES: DISABLE	1352	PROTOTYPES: DISABLE
1024		1353
1025	void CLONE (...)	1354	void CLONE (...)
1026	CODE:	1355	CODE:
1027	cbor_stash = 0;	1356	cbor_stash = 0;
		1357	cbor_tagged_stash = 0;
		1358	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1359	types_boolean_stash = 0;
1029		1360
1030	void new (char *klass)	1361	void new (char *klass)
1031	PPCODE:	1362	PPCODE:
1032	{	1363	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1364	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1372
1042	void shrink (CBOR *self, int enable = 1)	1373	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1374	ALIAS:
1044	shrink = F_SHRINK	1375	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1376	allow_unknown = F_ALLOW_UNKNOWN
		1377	allow_sharing = F_ALLOW_SHARING
		1378	allow_cycles = F_ALLOW_CYCLES
		1379	pack_strings = F_PACK_STRINGS
		1380	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1381	PPCODE:
1047	{	1382	{
1048	if (enable)	1383	if (enable)
1049	self->flags |= ix;	1384	self->flags |= ix;
1050	else	1385	else
…		…
1055		1390
1056	void get_shrink (CBOR *self)	1391	void get_shrink (CBOR *self)
1057	ALIAS:	1392	ALIAS:
1058	get_shrink = F_SHRINK	1393	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1394	get_allow_unknown = F_ALLOW_UNKNOWN
		1395	get_allow_sharing = F_ALLOW_SHARING
		1396	get_allow_cycles = F_ALLOW_CYCLES
		1397	get_pack_strings = F_PACK_STRINGS
		1398	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1399	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1400	XPUSHs (boolSV (self->flags & ix));
1062		1401
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1402	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1403	PPCODE:
…		…
1080	CODE:	1419	CODE:
1081	RETVAL = self->max_size;	1420	RETVAL = self->max_size;
1082	OUTPUT:	1421	OUTPUT:
1083	RETVAL	1422	RETVAL
1084		1423
1085	#if 0 //TODO	1424	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1425	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1426	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1427	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1428	XPUSHs (ST (0));
1094	}
1095		1429
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1430	SV *get_filter (CBOR *self)
1097	PPCODE:	1431	CODE:
1098	{	1432	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1433	OUTPUT:
1100	self->cb_sk_object = newHV ();	1434	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		1435
1120	void encode (CBOR *self, SV *scalar)	1436	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1437	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1438	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1439	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1452	EXTEND (SP, 2);
1137	PUSHs (sv);	1453	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1454	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1455	}
1140		1456
		1457	void incr_parse (CBOR *self, SV *cborstr)
		1458	ALIAS:
		1459	incr_parse_multiple = 1
		1460	PPCODE:
		1461	{
		1462	if (SvUTF8 (cborstr))
		1463	sv_utf8_downgrade (cborstr, 0);
		1464
		1465	if (!self->incr_count)
		1466	{
		1467	self->incr_count = newAV ();
		1468	self->incr_pos = 0;
		1469	self->incr_need = 1;
		1470
		1471	av_push (self->incr_count, newSViv (1));
		1472	}
		1473
		1474	do
		1475	{
		1476	if (!incr_parse (self, cborstr))
		1477	{
		1478	if (self->incr_need > self->max_size && self->max_size)
		1479	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1480	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1481
		1482	break;
		1483	}
		1484
		1485	SV *sv;
		1486	char *offset;
		1487
		1488	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1489	XPUSHs (sv);
		1490
		1491	sv_chop (cborstr, offset);
		1492
		1493	av_clear (self->incr_count);
		1494	av_push (self->incr_count, newSViv (1));
		1495
		1496	self->incr_pos = 0;
		1497	self->incr_need = self->incr_pos + 1;
		1498	}
		1499	while (ix);
		1500	}
		1501
		1502	void incr_reset (CBOR *self)
		1503	CODE:
		1504	{
		1505	SvREFCNT_dec (self->incr_count);
		1506	self->incr_count = 0;
		1507	}
		1508
1141	void DESTROY (CBOR *self)	1509	void DESTROY (CBOR *self)
1142	CODE:	1510	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1511	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1512
1146	PROTOTYPES: ENABLE	1513	PROTOTYPES: ENABLE
1147		1514
1148	void encode_cbor (SV *scalar)	1515	void encode_cbor (SV *scalar)
		1516	ALIAS:
		1517	encode_cbor = 0
		1518	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1519	PPCODE:
1150	{	1520	{
1151	CBOR cbor;	1521	CBOR cbor;
1152	cbor_init (&cbor);	1522	cbor_init (&cbor);
		1523	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1524	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1525	XPUSHs (scalar);
1155	}	1526	}
1156		1527
1157	void decode_cbor (SV *cborstr)	1528	void decode_cbor (SV *cborstr)

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