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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.2 by root, Sat Oct 26 10:41:12 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
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	15	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
17		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
18	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
20		106
21	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
22		108
23	#define SB do {	109	#define SB do {
24	#define SE } while (0)	110	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		111
37	#define IN_RANGE_INC(type,val,beg,end) \	112	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	113	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	114	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		115
…		…
46	#else	121	#else
47	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
49	#endif	124	#endif
50		125
51	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::
52	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		128
54	typedef struct {	129	typedef struct {
55	U32 flags;	130	U32 flags;
56	U32 max_depth;	131	U32 max_depth;
57	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
58		134
59	SV *cb_object;	135	// for the incremental parser
60	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.
61	} CBOR;	139	} CBOR;
62		140
63	INLINE void	141	ecb_inline void
64	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
65	{	143	{
66	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	145	cbor->max_depth = 512;
68	}	146	}
69		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
		153	}
		154
70	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	156	// utility functions
72		157
73	INLINE SV *	158	ecb_inline SV *
74	get_bool (const char *name)	159	get_bool (const char *name)
75	{	160	{
76	SV *sv = get_sv (name, 1);	161	SV *sv = get_sv (name, 1);
77		162
78	SvREADONLY_on (sv);	163	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	164	SvREADONLY_on (SvRV (sv));
80		165
81	return sv;	166	return sv;
82	}	167	}
83		168
84	INLINE void	169	ecb_inline void
85	shrink (SV *sv)	170	shrink (SV *sv)
86	{	171	{
87	sv_utf8_downgrade (sv, 1);	172	sv_utf8_downgrade (sv, 1);
88		173
89	if (SvLEN (sv) > SvCUR (sv) + 1)	174	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	180	#endif
96	}	181	}
97	}	182	}
98		183
99	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
100	// fp hell	185	ecb_inline int
101		186	minimum_string_length (UV idx)
102	//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	}
103		198
104	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
105	// encoder	200	// encoder
106		201
107	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
112	SV *sv; // result scalar	207	SV *sv; // result scalar
113	CBOR cbor;	208	CBOR cbor;
114	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;
115	} enc_t;	214	} enc_t;
116		215
117	INLINE void	216	ecb_inline void
118	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
119	{	218	{
120	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	220	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	225	}
127	}	226	}
128		227
129	INLINE void	228	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
131	{	230	{
132	need (enc, 1);	231	need (enc, 1);
133	*enc->cur++ = ch;	232	*enc->cur++ = ch;
134	}	233	}
…		…
136	static void	235	static void
137	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
138	{	237	{
139	need (enc, 9);	238	need (enc, 9);
140		239
141	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
143	else if (len < 0x100)	242	else if (ecb_expect_true (len <= 0xffU))
144	{	243	{
145	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	245	*enc->cur++ = len;
147	}	246	}
148	else if (len < 0x10000)	247	else if (len <= 0xffffU)
149	{	248	{
150	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	251	*enc->cur++ = len;
153	}	252	}
154	else if (len < 0x100000000)	253	else if (len <= 0xffffffffU)
155	{	254	{
156	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	259	*enc->cur++ = len;
161	}	260	}
162	else if (len)	261	else
163	{	262	{
164	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	271	*enc->cur++ = len;
173	}	272	}
174	}	273	}
175		274
176	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
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	283	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	285	need (enc, len);
181	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
182	enc->cur += len;	287	enc->cur += len;
183	}	288	}
184		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
185	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
186		316
187	static void	317	static void
188	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
189	{	319	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
194		324
195	++enc->depth;	325	++enc->depth;
196		326
197	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		328
		329	if (SvMAGICAL (av))
199	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
200	{	331	{
201	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
203	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	encode_sv (enc, AvARRAY (av)[i]);
204		338
205	--enc->depth;	339	--enc->depth;
206	}	340	}
207		341
208	static void	342	static void
…		…
217		351
218	int pairs = hv_iterinit (hv);	352	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	353	int mg = SvMAGICAL (hv);
220		354
221	if (mg)	355	if (mg)
222	encode_ch (enc, 0xa0 | 31);	356	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	357	else
224	encode_uint (enc, 0xa0, pairs);	358	encode_uint (enc, MAJOR_MAP, pairs);
225		359
226	while ((he = hv_iternext (hv)))	360	while ((he = hv_iternext (hv)))
227	{	361	{
228	if (HeKLEN (he) == HEf_SVKEY)	362	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	363	encode_sv (enc, HeSVKEY (he));
230	else	364	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	365	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		366
233	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));
234	}	368	}
235		369
236	if (mg)	370	if (mg)
237	encode_ch (enc, 0xe0 | 31);	371	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		372
239	--enc->depth;	373	--enc->depth;
240	}	374	}
241		375
242	// encode objects, arrays and special \0=false and \1=true values.	376	// encode objects, arrays and special \0=false and \1=true values.
243	static void	377	static void
244	encode_rv (enc_t *enc, SV *sv)	378	encode_rv (enc_t *enc, SV *sv)
245	{	379	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	380	SvGETMAGIC (sv);
		381
249	svt = SvTYPE (sv);	382	svtype svt = SvTYPE (sv);
250		383
251	if (expect_false (SvOBJECT (sv)))	384	if (ecb_expect_false (SvOBJECT (sv)))
252	{	385	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	386	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? 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
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	394	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		395
257	if (SvSTASH (sv) == stash)	396	HV *stash = SvSTASH (sv);
258	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	}
259	else	434	else
260	{	435	{
261	#if 0 //TODO	436	sv_setuv (*svp, enc->shareable_idx);
262	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)))
263	{	448	{
		449	dSP;
		450
		451	ENTER; SAVETMPS; PUSHMARK (SP);
264	// 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
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	453	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		454
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	455	PUTBACK;
		456	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	457	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	458	SPAGAIN;
278		459
279	// catch this surprisingly common error	460	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	461	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	462	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		463
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	464	encode_sv (enc, POPs);
287		465
		466	PUTBACK;
		467
288	FREETMPS; LEAVE;	468	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	469	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	470	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	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	}
298	else	499	else
299	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",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	501	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	502	}
304	else if (svt == SVt_PVHV)	503	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	504	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	505	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	506	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	507	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	508	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	509	encode_tag (enc, CBOR_TAG_INDIRECTION);
		510	encode_sv (enc, sv);
		511	}
328	}	512	}
329		513
330	static void	514	static void
331	encode_nv (enc_t *enc, SV *sv)	515	encode_nv (enc_t *enc, SV *sv)
332	{	516	{
333	double nv = SvNVX (sv);	517	double nv = SvNVX (sv);
334		518
335	need (enc, 9);	519	need (enc, 9);
336		520
337	if (expect_false (nv == (U32)nv))	521	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	522	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	523	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	524	else if (ecb_expect_false (nv == (float)nv))
341	{	525	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	526	uint32_t fp = ecb_float_to_binary32 (nv);
343		527
344	*enc->cur++ = 0xe0 | 26;	528	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		529
346	if (!ecb_big_endian ())	530	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	531	fp = ecb_bswap32 (fp);
348		532
349	memcpy (enc->cur, &fp, 4);	533	memcpy (enc->cur, &fp, 4);
…		…
351	}	535	}
352	else	536	else
353	{	537	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	538	uint64_t fp = ecb_double_to_binary64 (nv);
355		539
356	*enc->cur++ = 0xe0 | 27;	540	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		541
358	if (!ecb_big_endian ())	542	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	543	fp = ecb_bswap64 (fp);
360		544
361	memcpy (enc->cur, &fp, 8);	545	memcpy (enc->cur, &fp, 8);
…		…
370		554
371	if (SvPOKp (sv))	555	if (SvPOKp (sv))
372	{	556	{
373	STRLEN len;	557	STRLEN len;
374	char *str = SvPV (sv, len);	558	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	559	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	560	}
377	else if (SvNOKp (sv))	561	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	562	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	563	else if (SvIOKp (sv))
380	{	564	{
381	if (SvIsUV (sv))	565	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	566	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	567	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	568	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	569	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	570	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	571	}
388	else if (SvROK (sv))	572	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	573	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	574	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	575	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	576	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	577	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	578	else
395	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",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	580	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	581	}
398		582
399	static SV *	583	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	584	encode_cbor (SV *scalar, CBOR *cbor)
401	{	585	{
402	enc_t enc;	586	enc_t enc = { };
403		587
404	enc.cbor = *cbor;	588	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	589	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	590	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	591	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		592
410	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
411	encode_sv (&enc, scalar);	602	encode_sv (&enc, scalar);
412		603
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	604	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*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
415		606
…		…
429	U8 *end; // end of input string	620	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	621	const char *err; // parse error, if != 0
431	CBOR cbor;	622	CBOR cbor;
432	U32 depth; // recursion depth	623	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	624	U32 maxdepth; // recursion depth limit
		625	AV *shareable;
		626	AV *stringref;
		627	SV *decode_tagged;
434	} dec_t;	628	} dec_t;
435		629
436	#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
437		631
438	#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")
439		633
440	#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)
441	#define DEC_DEC_DEPTH --dec->depth	635	#define DEC_DEC_DEPTH --dec->depth
442		636
443	static UV	637	static UV
444	decode_uint (dec_t *dec)	638	decode_uint (dec_t *dec)
445	{	639	{
446	switch (*dec->cur & 31)	640	U8 m = *dec->cur & MINOR_MASK;
447	{	641	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		642
453	case 24:	643	if (ecb_expect_true (m < LENGTH_EXT1))
		644	return m;
		645	else if (ecb_expect_true (m == LENGTH_EXT1))
		646	{
454	WANT (2);	647	WANT (1);
455	dec->cur += 2;	648	dec->cur += 1;
456	return dec->cur[-1];	649	return dec->cur[-1];
457		650	}
458	case 25:	651	else if (ecb_expect_true (m == LENGTH_EXT2))
		652	{
459	WANT (3);	653	WANT (2);
460	dec->cur += 3;	654	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	655	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	656	| ((UV)dec->cur[-1]);
463		657	}
464	case 26:	658	else if (ecb_expect_true (m == LENGTH_EXT4))
		659	{
465	WANT (5);	660	WANT (4);
466	dec->cur += 5;	661	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	662	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	663	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	664	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	665	| ((UV)dec->cur[-1]);
471		666	}
472	case 27:	667	else if (ecb_expect_true (m == LENGTH_EXT8))
		668	{
473	WANT (9);	669	WANT (8);
474	dec->cur += 9;	670	dec->cur += 8;
		671
		672	return
		673	#if UVSIZE < 8
		674	0
		675	#else
475	return (((UV)dec->cur[-8]) << 56)	676	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	677	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	678	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	679	| (((UV)dec->cur[-5]) << 32)
		680	#endif
479	| (((UV)dec->cur[-4]) << 24)	681	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	682	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	683	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	684	| ((UV)dec->cur[-1]);
483		685	}
484	default:	686	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	687	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		688
488	fail:	689	fail:
489	return 0;	690	return 0;
490	}	691	}
491		692
…		…
496	{	697	{
497	AV *av = newAV ();	698	AV *av = newAV ();
498		699
499	DEC_INC_DEPTH;	700	DEC_INC_DEPTH;
500		701
501	if ((*dec->cur & 31) == 31)	702	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	703	{
503	++dec->cur;	704	++dec->cur;
504		705
505	for (;;)	706	for (;;)
506	{	707	{
507	WANT (1);	708	WANT (1);
508		709
509	if (*dec->cur == (0xe0 | 31))	710	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	711	{
511	++dec->cur;	712	++dec->cur;
512	break;	713	break;
513	}	714	}
514		715
…		…
517	}	718	}
518	else	719	else
519	{	720	{
520	int i, len = decode_uint (dec);	721	int i, len = decode_uint (dec);
521		722
		723	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	724	av_fill (av, len - 1);
523		725
524	for (i = 0; i < len; ++i)	726	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	727	AvARRAY (av)[i] = decode_sv (dec);
526	}	728	}
…		…
532	SvREFCNT_dec (av);	734	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	735	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	736	return &PL_sv_undef;
535	}	737	}
536		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
537	static SV *	783	static SV *
538	decode_hv (dec_t *dec)	784	decode_hv (dec_t *dec)
539	{	785	{
540	HV *hv = newHV ();	786	HV *hv = newHV ();
541		787
542	DEC_INC_DEPTH;	788	DEC_INC_DEPTH;
543		789
544	if ((*dec->cur & 31) == 31)	790	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	791	{
546	++dec->cur;	792	++dec->cur;
547		793
548	for (;;)	794	for (;;)
549	{	795	{
550	WANT (1);	796	WANT (1);
551		797
552	if (*dec->cur == (0xe0 | 31))	798	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	799	{
554	++dec->cur;	800	++dec->cur;
555	break;	801	break;
556	}	802	}
557		803
558	SV *k = decode_sv (dec);	804	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	805	}
563	}	806	}
564	else	807	else
565	{	808	{
566	int len = decode_uint (dec);	809	int pairs = decode_uint (dec);
567		810
568	while (len--)	811	while (pairs--)
569	{	812	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	813	}
576		814
577	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	816	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		817
735	fail:	818	fail:
736	SvREFCNT_dec (hv);	819	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	821	return &PL_sv_undef;
739	}	822	}
740		823
741	static SV *	824	static SV *
742	decode_str (dec_t *dec, int utf8)	825	decode_str (dec_t *dec, int utf8)
743	{	826	{
744	SV *sv;	827	SV *sv = 0;
745		828
746	if ((*dec->cur & 31) == 31)	829	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	830	{
		831	// indefinite length strings
748	++dec->cur;	832	++dec->cur;
749		833
		834	U8 major = *dec->cur & MAJOR_MISC;
		835
750	sv = newSVpvn ("", 0);	836	sv = newSVpvn ("", 0);
751		837
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	838	for (;;)
754	{	839	{
755	WANT (1);	840	WANT (1);
756		841
757	if (*dec->cur == (0xe0 | 31))	842	if ((*dec->cur - major) > LENGTH_EXT8)
		843	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	844	{
759	++dec->cur;	845	++dec->cur;
760	break;	846	break;
761	}	847	}
		848	else
		849	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		850
763	SV *sv2 = decode_sv (dec);	851	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	852
		853	WANT (len);
		854	sv_catpvn (sv, dec->cur, len);
		855	dec->cur += len;
765	}	856	}
766	}	857	}
767	else	858	else
768	{	859	{
769	STRLEN len = decode_uint (dec);	860	STRLEN len = decode_uint (dec);
770		861
771	WANT (len);	862	WANT (len);
772	sv = newSVpvn (dec->cur, len);	863	sv = newSVpvn (dec->cur, len);
773	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));
774	}	869	}
775		870
776	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
777	SvUTF8_on (sv);	877	SvUTF8_on (sv);
		878	}
778		879
779	return sv;	880	return sv;
780		881
781	fail:	882	fail:
		883	SvREFCNT_dec (sv);
		884	return &PL_sv_undef;
		885	}
		886
		887	static SV *
		888	decode_tagged (dec_t *dec)
		889	{
		890	SV *sv = 0;
		891	UV tag = decode_uint (dec);
		892
		893	WANT (1);
		894
		895	switch (tag)
		896	{
		897	case CBOR_TAG_MAGIC:
		898	sv = decode_sv (dec);
		899	break;
		900
		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
		1068	return sv;
		1069
		1070	fail:
		1071	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1072	return &PL_sv_undef;
783	}	1073	}
784		1074
785	static SV *	1075	static SV *
786	decode_sv (dec_t *dec)	1076	decode_sv (dec_t *dec)
787	{	1077	{
788	WANT (1);	1078	WANT (1);
789		1079
790	switch (*dec->cur >> 5)	1080	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1081	{
792	case 0: // unsigned int	1082	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1083	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1084	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1085	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1086	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1087	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1088	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1089
800	return decode_str (dec, 1);	1090	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1091	switch (*dec->cur++ & MINOR_MASK)
810	{	1092	{
811	case 20:	1093	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1094	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1095	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1096	#endif
815	return newSVsv (cbor_false);	1097	return newSVsv (types_false);
816	case 21:	1098	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1099	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1100	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1101	#endif
820	return newSVsv (cbor_true);	1102	return newSVsv (types_true);
821	case 22:	1103	case SIMPLE_NULL:
822	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);
823		1110
824	case 25:	1111	case MISC_FLOAT16:
825	{	1112	{
826	WANT (2);	1113	WANT (2);
827		1114
828	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1115	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
829	dec->cur += 2;	1116	dec->cur += 2;
830		1117
831	return newSVnv (ecb_binary16_to_float (fp));	1118	return newSVnv (ecb_binary16_to_float (fp));
832	}	1119	}
833		1120
834	case 26:	1121	case MISC_FLOAT32:
835	{	1122	{
836	uint32_t fp;	1123	uint32_t fp;
837	WANT (4);	1124	WANT (4);
838	memcpy (&fp, dec->cur, 4);	1125	memcpy (&fp, dec->cur, 4);
839	dec->cur += 4;	1126	dec->cur += 4;
…		…
842	fp = ecb_bswap32 (fp);	1129	fp = ecb_bswap32 (fp);
843		1130
844	return newSVnv (ecb_binary32_to_float (fp));	1131	return newSVnv (ecb_binary32_to_float (fp));
845	}	1132	}
846		1133
847	case 27:	1134	case MISC_FLOAT64:
848	{	1135	{
849	uint64_t fp;	1136	uint64_t fp;
850	WANT (8);	1137	WANT (8);
851	memcpy (&fp, dec->cur, 8);	1138	memcpy (&fp, dec->cur, 8);
852	dec->cur += 8;	1139	dec->cur += 8;
…		…
855	fp = ecb_bswap64 (fp);	1142	fp = ecb_bswap64 (fp);
856		1143
857	return newSVnv (ecb_binary64_to_double (fp));	1144	return newSVnv (ecb_binary64_to_double (fp));
858	}	1145	}
859		1146
860	// 0..19 unassigned	1147	// 0..19 unassigned simple
861	// 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
862	default:	1151	default:
863	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1152	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
864	}	1153	}
865		1154
866	break;	1155	break;
867	}	1156	}
868	#if 0
869	switch (*dec->cur)
870	{
871	//case '"': ++dec->cur; return decode_str (dec);
872	case '[': ++dec->cur; return decode_av (dec);
873	case '{': ++dec->cur; return decode_hv (dec);
874
875	case '-':
876	case '0': case '1': case '2': case '3': case '4':
877	case '5': case '6': case '7': case '8': case '9':
878	//TODO return decode_num (dec);
879
880	case 't':
881	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
882	{
883	dec->cur += 4;
884	#if CBOR_SLOW
885	cbor_true = get_bool ("CBOR::XS::true");
886	#endif
887	return newSVsv (cbor_true);
888	}
889	else
890	ERR ("'true' expected");
891
892	break;
893
894	case 'f':
895	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
896	{
897	dec->cur += 5;
898	#if CBOR_SLOW
899	cbor_false = get_bool ("CBOR::XS::false");
900	#endif
901	return newSVsv (cbor_false);
902	}
903	else
904	ERR ("'false' expected");
905
906	break;
907
908	case 'n':
909	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
910	{
911	dec->cur += 4;
912	return newSVsv (&PL_sv_undef);
913	}
914	else
915	ERR ("'null' expected");
916
917	break;
918
919	default:
920	ERR ("malformed CBOR string, neither array, object, number, string or atom");
921	break;
922	}
923	#endif
924		1157
925	fail:	1158	fail:
926	return &PL_sv_undef;	1159	return &PL_sv_undef;
927	}	1160	}
928		1161
929	static SV *	1162	static SV *
930	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1163	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
931	{	1164	{
932	dec_t dec;	1165	dec_t dec = { };
933	SV *sv;	1166	SV *sv;
		1167	STRLEN len;
		1168	char *data = SvPVbyte (string, len);
934		1169
935	/* work around bugs in 5.10 where manipulating magic values
936	* makes perl ignore the magic in subsequent accesses.
937	* also make a copy of non-PV values, to get them into a clean
938	* state (SvPV should do that, but it's buggy, see below).
939	*/
940	/*SvGETMAGIC (string);*/
941	if (SvMAGICAL (string) || !SvPOK (string))
942	string = sv_2mortal (newSVsv (string));
943
944	SvUPGRADE (string, SVt_PV);
945
946	/* work around a bug in perl 5.10, which causes SvCUR to fail an
947	* assertion with -DDEBUGGING, although SvCUR is documented to
948	* return the xpv_cur field which certainly exists after upgrading.
949	* according to nicholas clark, calling SvPOK fixes this.
950	* But it doesn't fix it, so try another workaround, call SvPV_nolen
951	* and hope for the best.
952	* Damnit, SvPV_nolen still trips over yet another assertion. This
953	* assertion business is seriously broken, try yet another workaround
954	* for the broken -DDEBUGGING.
955	*/
956	{
957	#ifdef DEBUGGING
958	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
959	#else
960	STRLEN offset = SvCUR (string);
961	#endif
962
963	if (offset > cbor->max_size && cbor->max_size)	1170	if (len > cbor->max_size && cbor->max_size)
964	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",
965	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1172	(unsigned long)len, (unsigned long)cbor->max_size);
966	}
967
968	sv_utf8_downgrade (string, 0);
969		1173
970	dec.cbor = *cbor;	1174	dec.cbor = *cbor;
971	dec.cur = (U8 *)SvPVX (string);	1175	dec.cur = (U8 *)data;
972	dec.end = (U8 *)SvEND (string);	1176	dec.end = (U8 *)data + len;
973	dec.err = 0;
974	dec.depth = 0;
975
976	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
977	;//TODO dec.cbor.flags |= F_HOOK;
978		1177
979	sv = decode_sv (&dec);	1178	sv = decode_sv (&dec);
980		1179
981	if (offset_return)	1180	if (offset_return)
982	*offset_return = dec.cur;	1181	*offset_return = dec.cur;
…		…
985	if (dec.cur != dec.end && !dec.err)	1184	if (dec.cur != dec.end && !dec.err)
986	dec.err = "garbage after CBOR object";	1185	dec.err = "garbage after CBOR object";
987		1186
988	if (dec.err)	1187	if (dec.err)
989	{	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
990	SvREFCNT_dec (sv);	1200	SvREFCNT_dec (sv);
991	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);
992	}	1202	}
993		1203
994	sv = sv_2mortal (sv);	1204	sv = sv_2mortal (sv);
995		1205
996	return sv;	1206	return sv;
997	}	1207	}
998		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
999	/////////////////////////////////////////////////////////////////////////////	1329	/////////////////////////////////////////////////////////////////////////////
1000	// XS interface functions	1330	// XS interface functions
1001		1331
1002	MODULE = CBOR::XS PACKAGE = CBOR::XS	1332	MODULE = CBOR::XS PACKAGE = CBOR::XS
1003		1333
1004	BOOT:	1334	BOOT:
1005	{	1335	{
1006	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1336	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1007	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1337	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1008		1338
1009	cbor_true = get_bool ("CBOR::XS::true");	1339	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1010	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);
1011	}	1350	}
1012		1351
1013	PROTOTYPES: DISABLE	1352	PROTOTYPES: DISABLE
1014		1353
1015	void CLONE (...)	1354	void CLONE (...)
1016	CODE:	1355	CODE:
1017	cbor_stash = 0;	1356	cbor_stash = 0;
		1357	cbor_tagged_stash = 0;
		1358	types_error_stash = 0;
1018	cbor_boolean_stash = 0;	1359	types_boolean_stash = 0;
1019		1360
1020	void new (char *klass)	1361	void new (char *klass)
1021	PPCODE:	1362	PPCODE:
1022	{	1363	{
1023	SV *pv = NEWSV (0, sizeof (CBOR));	1364	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1031		1372
1032	void shrink (CBOR *self, int enable = 1)	1373	void shrink (CBOR *self, int enable = 1)
1033	ALIAS:	1374	ALIAS:
1034	shrink = F_SHRINK	1375	shrink = F_SHRINK
1035	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
1036	PPCODE:	1381	PPCODE:
1037	{	1382	{
1038	if (enable)	1383	if (enable)
1039	self->flags |= ix;	1384	self->flags |= ix;
1040	else	1385	else
…		…
1045		1390
1046	void get_shrink (CBOR *self)	1391	void get_shrink (CBOR *self)
1047	ALIAS:	1392	ALIAS:
1048	get_shrink = F_SHRINK	1393	get_shrink = F_SHRINK
1049	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
1050	PPCODE:	1399	PPCODE:
1051	XPUSHs (boolSV (self->flags & ix));	1400	XPUSHs (boolSV (self->flags & ix));
1052		1401
1053	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1402	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1054	PPCODE:	1403	PPCODE:
…		…
1070	CODE:	1419	CODE:
1071	RETVAL = self->max_size;	1420	RETVAL = self->max_size;
1072	OUTPUT:	1421	OUTPUT:
1073	RETVAL	1422	RETVAL
1074		1423
1075	#if 0 //TODO	1424	void filter (CBOR *self, SV *filter = 0)
1076
1077	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1078	PPCODE:	1425	PPCODE:
1079	{
1080	SvREFCNT_dec (self->cb_object);	1426	SvREFCNT_dec (self->filter);
1081	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1427	self->filter = filter ? newSVsv (filter) : filter;
1082
1083	XPUSHs (ST (0));	1428	XPUSHs (ST (0));
1084	}
1085		1429
1086	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1430	SV *get_filter (CBOR *self)
1087	PPCODE:	1431	CODE:
1088	{	1432	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1089	if (!self->cb_sk_object)	1433	OUTPUT:
1090	self->cb_sk_object = newHV ();	1434	RETVAL
1091
1092	if (SvOK (cb))
1093	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1094	else
1095	{
1096	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1097
1098	if (!HvKEYS (self->cb_sk_object))
1099	{
1100	SvREFCNT_dec (self->cb_sk_object);
1101	self->cb_sk_object = 0;
1102	}
1103	}
1104
1105	XPUSHs (ST (0));
1106	}
1107
1108	#endif
1109		1435
1110	void encode (CBOR *self, SV *scalar)	1436	void encode (CBOR *self, SV *scalar)
1111	PPCODE:	1437	PPCODE:
1112	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1438	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1113	XPUSHs (scalar);	1439	XPUSHs (scalar);
…		…
1126	EXTEND (SP, 2);	1452	EXTEND (SP, 2);
1127	PUSHs (sv);	1453	PUSHs (sv);
1128	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1454	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1129	}	1455	}
1130		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
1131	void DESTROY (CBOR *self)	1509	void DESTROY (CBOR *self)
1132	CODE:	1510	PPCODE:
1133	SvREFCNT_dec (self->cb_sk_object);	1511	cbor_free (self);
1134	SvREFCNT_dec (self->cb_object);
1135		1512
1136	PROTOTYPES: ENABLE	1513	PROTOTYPES: ENABLE
1137		1514
1138	void encode_cbor (SV *scalar)	1515	void encode_cbor (SV *scalar)
		1516	ALIAS:
		1517	encode_cbor = 0
		1518	encode_cbor_sharing = F_ALLOW_SHARING
1139	PPCODE:	1519	PPCODE:
1140	{	1520	{
1141	CBOR cbor;	1521	CBOR cbor;
1142	cbor_init (&cbor);	1522	cbor_init (&cbor);
		1523	cbor.flags |= ix;
1143	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1524	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1144	XPUSHs (scalar);	1525	XPUSHs (scalar);
1145	}	1526	}
1146		1527
1147	void decode_cbor (SV *cborstr)	1528	void decode_cbor (SV *cborstr)

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