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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.50 by root, Thu Feb 25 02:29:22 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	15	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
17		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
18	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_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	{
		338	SV *sv = AvARRAY (av)[i];
		339	encode_sv (enc, sv ? sv : &PL_sv_undef);
		340	}
204		341
205	--enc->depth;	342	--enc->depth;
206	}	343	}
207		344
208	static void	345	static void
…		…
217		354
218	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
220		357
221	if (mg)	358	if (mg)
222	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	360	else
224	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
225		362
226	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
227	{	364	{
228	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
230	else	367	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		369
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	370	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	371	}
235		372
236	if (mg)	373	if (mg)
237	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		375
239	--enc->depth;	376	--enc->depth;
240	}	377	}
241		378
242	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
243	static void	380	static void
244	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
245	{	382	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
249	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
250		386
251	if (expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
252	{	388	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	390	? types_boolean_stash
		391	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		392	HV *error_stash = !CBOR_SLOW || types_error_stash
		393	? types_error_stash
		394	: gv_stashpv ("Types::Serialiser::Error", 1);
		395	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		396	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		398
257	if (SvSTASH (sv) == stash)	399	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	400
		401	if (stash == boolean_stash)
		402	{
		403	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		404	return;
		405	}
		406	else if (stash == error_stash)
		407	{
		408	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		409	return;
		410	}
		411	else if (stash == tagged_stash)
		412	{
		413	if (svt != SVt_PVAV)
		414	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		415
		416	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		417	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		418
		419	return;
		420	}
		421	}
		422
		423	if (ecb_expect_false (SvREFCNT (sv) > 1)
		424	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		425	{
		426	if (!enc->shareable)
		427	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		428
		429	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		430
		431	if (SvOK (*svp))
		432	{
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		434	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		435	return;
		436	}
259	else	437	else
260	{	438	{
261	#if 0 //TODO	439	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	440	++enc->shareable_idx;
		441	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		442	}
		443	}
		444
		445	if (ecb_expect_false (SvOBJECT (sv)))
		446	{
		447	HV *stash = SvSTASH (sv);
		448	GV *method;
		449
		450	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	451	{
		452	dSP;
		453
		454	ENTER; SAVETMPS;
		455	PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	456	// 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)));	457	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		458
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	459	PUTBACK;
		460	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	461	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	462	SPAGAIN;
278		463
279	// catch this surprisingly common error	464	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	465	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)));	466	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		467
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	468	encode_sv (enc, POPs);
287		469
		470	PUTBACK;
		471
288	FREETMPS; LEAVE;	472	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	}	473	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	474	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	475	{
		476	dSP;
		477
		478	ENTER; SAVETMPS;
		479	SAVESTACK_POS ();
		480	PUSHMARK (SP);
		481	EXTEND (SP, 2);
		482	// we re-bless the reference to get overload and other niceties right
		483	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		484	PUSHs (sv_cbor);
		485
		486	PUTBACK;
		487	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		488	SPAGAIN;
		489
		490	// catch this surprisingly common error
		491	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		492	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		493
		494	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		495	encode_uint (enc, MAJOR_ARRAY, count + 1);
		496	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		497
		498	while (count)
		499	encode_sv (enc, SP[1 - count--]);
		500
		501	PUTBACK;
		502
		503	FREETMPS; LEAVE;
		504	}
298	else	505	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	506	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	507	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	508	}
304	else if (svt == SVt_PVHV)	509	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	510	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	511	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	512	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	513	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	514	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	515	encode_tag (enc, CBOR_TAG_INDIRECTION);
		516	encode_sv (enc, sv);
		517	}
328	}	518	}
329		519
330	static void	520	static void
331	encode_nv (enc_t *enc, SV *sv)	521	encode_nv (enc_t *enc, SV *sv)
332	{	522	{
333	double nv = SvNVX (sv);	523	double nv = SvNVX (sv);
334		524
335	need (enc, 9);	525	need (enc, 9);
336		526
337	if (expect_false (nv == (U32)nv))	527	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	528	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	529	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	530	else if (ecb_expect_false (nv == (float)nv))
341	{	531	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	532	uint32_t fp = ecb_float_to_binary32 (nv);
343		533
344	*enc->cur++ = 0xe0 | 26;	534	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		535
346	if (!ecb_big_endian ())	536	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	537	fp = ecb_bswap32 (fp);
348		538
349	memcpy (enc->cur, &fp, 4);	539	memcpy (enc->cur, &fp, 4);
…		…
351	}	541	}
352	else	542	else
353	{	543	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	544	uint64_t fp = ecb_double_to_binary64 (nv);
355		545
356	*enc->cur++ = 0xe0 | 27;	546	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		547
358	if (!ecb_big_endian ())	548	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	549	fp = ecb_bswap64 (fp);
360		550
361	memcpy (enc->cur, &fp, 8);	551	memcpy (enc->cur, &fp, 8);
…		…
370		560
371	if (SvPOKp (sv))	561	if (SvPOKp (sv))
372	{	562	{
373	STRLEN len;	563	STRLEN len;
374	char *str = SvPV (sv, len);	564	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	565	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	566	}
377	else if (SvNOKp (sv))	567	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	568	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	569	else if (SvIOKp (sv))
380	{	570	{
381	if (SvIsUV (sv))	571	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	572	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	573	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	574	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	575	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	576	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	577	}
388	else if (SvROK (sv))	578	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	579	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	580	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	581	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	582	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	583	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	584	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	585	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	586	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	587	}
398		588
399	static SV *	589	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	590	encode_cbor (SV *scalar, CBOR *cbor)
401	{	591	{
402	enc_t enc;	592	enc_t enc = { 0 };
403		593
404	enc.cbor = *cbor;	594	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	595	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	596	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	597	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		598
410	SvPOK_only (enc.sv);	599	SvPOK_only (enc.sv);
		600
		601	if (cbor->flags & F_PACK_STRINGS)
		602	{
		603	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		604	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		605	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		606	}
		607
411	encode_sv (&enc, scalar);	608	encode_sv (&enc, scalar);
412		609
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	610	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	611	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		612
…		…
429	U8 *end; // end of input string	626	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	627	const char *err; // parse error, if != 0
431	CBOR cbor;	628	CBOR cbor;
432	U32 depth; // recursion depth	629	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	630	U32 maxdepth; // recursion depth limit
		631	AV *shareable;
		632	AV *stringref;
		633	SV *decode_tagged;
434	} dec_t;	634	} dec_t;
435		635
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	636	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
437		637
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	638	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
439		639
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	640	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	641	#define DEC_DEC_DEPTH --dec->depth
442		642
443	static UV	643	static UV
444	decode_uint (dec_t *dec)	644	decode_uint (dec_t *dec)
445	{	645	{
446	switch (*dec->cur & 31)	646	U8 m = *dec->cur & MINOR_MASK;
447	{	647	++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		648
453	case 24:	649	if (ecb_expect_true (m < LENGTH_EXT1))
		650	return m;
		651	else if (ecb_expect_true (m == LENGTH_EXT1))
		652	{
454	WANT (2);	653	WANT (1);
455	dec->cur += 2;	654	dec->cur += 1;
456	return dec->cur[-1];	655	return dec->cur[-1];
457		656	}
458	case 25:	657	else if (ecb_expect_true (m == LENGTH_EXT2))
		658	{
459	WANT (3);	659	WANT (2);
460	dec->cur += 3;	660	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	661	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	662	| ((UV)dec->cur[-1]);
463		663	}
464	case 26:	664	else if (ecb_expect_true (m == LENGTH_EXT4))
		665	{
465	WANT (5);	666	WANT (4);
466	dec->cur += 5;	667	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	668	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	669	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	670	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	671	| ((UV)dec->cur[-1]);
471		672	}
472	case 27:	673	else if (ecb_expect_true (m == LENGTH_EXT8))
		674	{
473	WANT (9);	675	WANT (8);
474	dec->cur += 9;	676	dec->cur += 8;
		677
		678	return
		679	#if UVSIZE < 8
		680	0
		681	#else
475	return (((UV)dec->cur[-8]) << 56)	682	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	683	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	684	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	685	| (((UV)dec->cur[-5]) << 32)
		686	#endif
479	| (((UV)dec->cur[-4]) << 24)	687	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	688	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	689	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	690	| ((UV)dec->cur[-1]);
483		691	}
484	default:	692	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	693	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		694
488	fail:	695	fail:
489	return 0;	696	return 0;
490	}	697	}
491		698
…		…
496	{	703	{
497	AV *av = newAV ();	704	AV *av = newAV ();
498		705
499	DEC_INC_DEPTH;	706	DEC_INC_DEPTH;
500		707
501	if ((*dec->cur & 31) == 31)	708	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	709	{
503	++dec->cur;	710	++dec->cur;
504		711
505	for (;;)	712	for (;;)
506	{	713	{
507	WANT (1);	714	WANT (1);
508		715
509	if (*dec->cur == 0xe0 | 31)	716	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	717	{
511	++dec->cur;	718	++dec->cur;
512	break;	719	break;
513	}	720	}
514		721
…		…
517	}	724	}
518	else	725	else
519	{	726	{
520	int i, len = decode_uint (dec);	727	int i, len = decode_uint (dec);
521		728
		729	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);	730	av_fill (av, len - 1);
523		731
524	for (i = 0; i < len; ++i)	732	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	733	AvARRAY (av)[i] = decode_sv (dec);
526	}	734	}
…		…
532	SvREFCNT_dec (av);	740	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	741	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	742	return &PL_sv_undef;
535	}	743	}
536		744
		745	static void
		746	decode_he (dec_t *dec, HV *hv)
		747	{
		748	// for speed reasons, we specialcase single-string
		749	// byte or utf-8 strings as keys, but only when !stringref
		750
		751	if (ecb_expect_true (!dec->stringref))
		752	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		753	{
		754	I32 len = decode_uint (dec);
		755	char *key = (char *)dec->cur;
		756
		757	WANT (len);
		758	dec->cur += len;
		759
		760	hv_store (hv, key, len, decode_sv (dec), 0);
		761
		762	return;
		763	}
		764	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		765	{
		766	I32 len = decode_uint (dec);
		767	char *key = (char *)dec->cur;
		768
		769	WANT (len);
		770	dec->cur += len;
		771
		772	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		773	if (!is_utf8_string (key, len))
		774	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		775
		776	hv_store (hv, key, -len, decode_sv (dec), 0);
		777
		778	return;
		779	}
		780
		781	SV *k = decode_sv (dec);
		782	SV *v = decode_sv (dec);
		783
		784	hv_store_ent (hv, k, v, 0);
		785	SvREFCNT_dec (k);
		786
		787	fail:
		788	;
		789	}
		790
537	static SV *	791	static SV *
538	decode_hv (dec_t *dec)	792	decode_hv (dec_t *dec)
539	{	793	{
540	HV *hv = newHV ();	794	HV *hv = newHV ();
541		795
542	DEC_INC_DEPTH;	796	DEC_INC_DEPTH;
543		797
544	if ((*dec->cur & 31) == 31)	798	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	799	{
546	++dec->cur;	800	++dec->cur;
547		801
548	for (;;)	802	for (;;)
549	{	803	{
550	WANT (1);	804	WANT (1);
551		805
552	if (*dec->cur == 0xe0 | 31)	806	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	807	{
554	++dec->cur;	808	++dec->cur;
555	break;	809	break;
556	}	810	}
557		811
558	SV *k = decode_sv (dec);	812	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	813	}
563	}	814	}
564	else	815	else
565	{	816	{
566	int len = decode_uint (dec);	817	int pairs = decode_uint (dec);
567		818
568	while (len--)	819	while (pairs--)
569	{	820	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	}	821	}
576		822
577	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	824	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		825
735	fail:	826	fail:
736	SvREFCNT_dec (hv);	827	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	828	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	829	return &PL_sv_undef;
739	}	830	}
740		831
741	static SV *	832	static SV *
742	decode_str (dec_t *dec, int utf8)	833	decode_str (dec_t *dec, int utf8)
743	{	834	{
744	SV *sv;	835	SV *sv = 0;
745		836
746	if ((*dec->cur & 31) == 31)	837	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	838	{
		839	// indefinite length strings
748	++dec->cur;	840	++dec->cur;
749		841
		842	U8 major = *dec->cur & MAJOR_MISC;
		843
750	sv = newSVpvn ("", 0);	844	sv = newSVpvn ("", 0);
751		845
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	846	for (;;)
754	{	847	{
755	WANT (1);	848	WANT (1);
756		849
757	if (*dec->cur == 0xe0 | 31)	850	if ((*dec->cur - major) > LENGTH_EXT8)
		851	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	852	{
759	++dec->cur;	853	++dec->cur;
760	break;	854	break;
761	}	855	}
		856	else
		857	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		858
763	SV *sv2 = decode_sv (dec);	859	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	860
		861	WANT (len);
		862	sv_catpvn (sv, dec->cur, len);
		863	dec->cur += len;
765	}	864	}
766	}	865	}
767	else	866	else
768	{	867	{
769	STRLEN len = decode_uint (dec);	868	STRLEN len = decode_uint (dec);
770		869
771	WANT (len);	870	WANT (len);
772	sv = newSVpvn (dec->cur, len);	871	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	872	dec->cur += len;
		873
		874	if (ecb_expect_false (dec->stringref)
		875	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		876	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	877	}
775		878
776	if (utf8)	879	if (utf8)
		880	{
		881	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		882	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		883	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		884
777	SvUTF8_on (sv);	885	SvUTF8_on (sv);
		886	}
778		887
779	return sv;	888	return sv;
780		889
781	fail:	890	fail:
		891	SvREFCNT_dec (sv);
		892	return &PL_sv_undef;
		893	}
		894
		895	static SV *
		896	decode_tagged (dec_t *dec)
		897	{
		898	SV *sv = 0;
		899	UV tag = decode_uint (dec);
		900
		901	WANT (1);
		902
		903	switch (tag)
		904	{
		905	case CBOR_TAG_MAGIC:
		906	sv = decode_sv (dec);
		907	break;
		908
		909	case CBOR_TAG_INDIRECTION:
		910	sv = newRV_noinc (decode_sv (dec));
		911	break;
		912
		913	case CBOR_TAG_STRINGREF_NAMESPACE:
		914	{
		915	ENTER; SAVETMPS;
		916
		917	SAVESPTR (dec->stringref);
		918	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		919
		920	sv = decode_sv (dec);
		921
		922	FREETMPS; LEAVE;
		923	}
		924	break;
		925
		926	case CBOR_TAG_STRINGREF:
		927	{
		928	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		929	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		930
		931	UV idx = decode_uint (dec);
		932
		933	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		934	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		935
		936	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		937	}
		938	break;
		939
		940	case CBOR_TAG_VALUE_SHAREABLE:
		941	{
		942	if (ecb_expect_false (!dec->shareable))
		943	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		944
		945	if (dec->cbor.flags & F_ALLOW_CYCLES)
		946	{
		947	sv = newSV (0);
		948	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		949
		950	SV *osv = decode_sv (dec);
		951	sv_setsv (sv, osv);
		952	SvREFCNT_dec_NN (osv);
		953	}
		954	else
		955	{
		956	av_push (dec->shareable, &PL_sv_undef);
		957	int idx = AvFILLp (dec->shareable);
		958	sv = decode_sv (dec);
		959	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		960	}
		961	}
		962	break;
		963
		964	case CBOR_TAG_VALUE_SHAREDREF:
		965	{
		966	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		967	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		968
		969	UV idx = decode_uint (dec);
		970
		971	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		972	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		973
		974	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		975
		976	if (sv == &PL_sv_undef)
		977	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		978	}
		979	break;
		980
		981	case CBOR_TAG_PERL_OBJECT:
		982	{
		983	sv = decode_sv (dec);
		984
		985	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		986	ERR ("corrupted CBOR data (non-array perl object)");
		987
		988	AV *av = (AV *)SvRV (sv);
		989	int len = av_len (av) + 1;
		990	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		991
		992	if (!stash)
		993	ERR ("cannot decode perl-object (package does not exist)");
		994
		995	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		996
		997	if (!method)
		998	ERR ("cannot decode perl-object (package does not have a THAW method)");
		999
		1000	dSP;
		1001
		1002	ENTER; SAVETMPS;
		1003	PUSHMARK (SP);
		1004	EXTEND (SP, len + 1);
		1005	// we re-bless the reference to get overload and other niceties right
		1006	PUSHs (*av_fetch (av, 0, 1));
		1007	PUSHs (sv_cbor);
		1008
		1009	int i;
		1010
		1011	for (i = 1; i < len; ++i)
		1012	PUSHs (*av_fetch (av, i, 1));
		1013
		1014	PUTBACK;
		1015	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1016	SPAGAIN;
		1017
		1018	if (SvTRUE (ERRSV))
		1019	{
		1020	FREETMPS; LEAVE;
		1021	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1022	}
		1023
		1024	SvREFCNT_dec (sv);
		1025	sv = SvREFCNT_inc (POPs);
		1026
		1027	PUTBACK;
		1028
		1029	FREETMPS; LEAVE;
		1030	}
		1031	break;
		1032
		1033	default:
		1034	{
		1035	sv = decode_sv (dec);
		1036
		1037	dSP;
		1038	ENTER; SAVETMPS;
		1039	SAVESTACK_POS ();
		1040	PUSHMARK (SP);
		1041	EXTEND (SP, 2);
		1042	PUSHs (newSVuv (tag));
		1043	PUSHs (sv);
		1044
		1045	PUTBACK;
		1046	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1047	SPAGAIN;
		1048
		1049	if (SvTRUE (ERRSV))
		1050	{
		1051	FREETMPS; LEAVE;
		1052	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1053	}
		1054
		1055	if (count)
		1056	{
		1057	SvREFCNT_dec (sv);
		1058	sv = SvREFCNT_inc (POPs);
		1059	}
		1060	else
		1061	{
		1062	AV *av = newAV ();
		1063	av_push (av, newSVuv (tag));
		1064	av_push (av, sv);
		1065
		1066	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1067	? cbor_tagged_stash
		1068	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1069	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1070	}
		1071
		1072	PUTBACK;
		1073
		1074	FREETMPS; LEAVE;
		1075	}
		1076	break;
		1077	}
		1078
		1079	return sv;
		1080
		1081	fail:
		1082	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1083	return &PL_sv_undef;
783	}	1084	}
784		1085
785	static SV *	1086	static SV *
786	decode_sv (dec_t *dec)	1087	decode_sv (dec_t *dec)
787	{	1088	{
788	WANT (1);	1089	WANT (1);
789		1090
790	switch (*dec->cur >> 5)	1091	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1092	{
792	case 0: // unsigned int	1093	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1094	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1095	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1096	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1097	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1098	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1099	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1100
800	return decode_str (dec, 1);	1101	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)	1102	switch (*dec->cur++ & MINOR_MASK)
810	{	1103	{
811	case 20:	1104	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1105	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1106	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1107	#endif
815	return newSVsv (cbor_false);	1108	return newSVsv (types_false);
816	case 21:	1109	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1110	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1111	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1112	#endif
820	return newSVsv (cbor_true);	1113	return newSVsv (types_true);
821	case 22:	1114	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1115	return newSVsv (&PL_sv_undef);
		1116	case SIMPLE_UNDEF:
		1117	#if CBOR_SLOW
		1118	types_error = get_bool ("Types::Serialiser::error");
		1119	#endif
		1120	return newSVsv (types_error);
823		1121
824	case 25:	1122	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1123	{
		1124	WANT (2);
828		1125
		1126	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1127	dec->cur += 2;
		1128
		1129	return newSVnv (ecb_binary16_to_float (fp));
		1130	}
		1131
829	case 26:	1132	case MISC_FLOAT32:
830	{	1133	{
831	uint32_t fp;	1134	uint32_t fp;
832	WANT (4);	1135	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1136	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1137	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1140	fp = ecb_bswap32 (fp);
838		1141
839	return newSVnv (ecb_binary32_to_float (fp));	1142	return newSVnv (ecb_binary32_to_float (fp));
840	}	1143	}
841		1144
842	case 27:	1145	case MISC_FLOAT64:
843	{	1146	{
844	uint64_t fp;	1147	uint64_t fp;
845	WANT (8);	1148	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1149	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1150	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1153	fp = ecb_bswap64 (fp);
851		1154
852	return newSVnv (ecb_binary64_to_double (fp));	1155	return newSVnv (ecb_binary64_to_double (fp));
853	}	1156	}
854		1157
855	// 0..19 unassigned	1158	// 0..19 unassigned simple
856	// 24 reserved + unassigned (reserved values are not encodable)	1159	// 24 reserved + unassigned simple (reserved values are not encodable)
		1160	// 28-30 unassigned misc
		1161	// 31 break code
857	default:	1162	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1163	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1164	}
860		1165
861	break;	1166	break;
862	}	1167	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1168
920	fail:	1169	fail:
921	return &PL_sv_undef;	1170	return &PL_sv_undef;
922	}	1171	}
923		1172
924	static SV *	1173	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1174	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1175	{
927	dec_t dec;	1176	dec_t dec = { 0 };
928	SV *sv;	1177	SV *sv;
		1178	STRLEN len;
		1179	char *data = SvPVbyte (string, len);
929		1180
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1181	if (len > cbor->max_size && cbor->max_size)
959	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1182	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1183	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1184
965	dec.cbor = *cbor;	1185	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1186	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1187	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1188
974	sv = decode_sv (&dec);	1189	sv = decode_sv (&dec);
975		1190
976	if (offset_return)	1191	if (offset_return)
977	*offset_return = dec.cur;	1192	*offset_return = dec.cur;
978		1193
979	if (!(offset_return || !sv))	1194	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1195	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1196	dec.err = "garbage after CBOR object";
		1197
		1198	if (dec.err)
		1199	{
		1200	if (dec.shareable)
		1201	{
		1202	// need to break cyclic links, which whould all be in shareable
		1203	int i;
		1204	SV **svp;
		1205
		1206	for (i = av_len (dec.shareable) + 1; i--; )
		1207	if ((svp = av_fetch (dec.shareable, i, 0)))
		1208	sv_setsv (*svp, &PL_sv_undef);
		1209	}
		1210
984	SvREFCNT_dec (sv);	1211	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988
989	if (!sv)
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1212	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
		1213	}
991		1214
992	sv = sv_2mortal (sv);	1215	sv = sv_2mortal (sv);
993		1216
994	return sv;	1217	return sv;
995	}	1218	}
996		1219
		1220	/////////////////////////////////////////////////////////////////////////////
		1221	// incremental parser
		1222
		1223	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1224
		1225	// returns 0 for notyet, 1 for success or error
		1226	static int
		1227	incr_parse (CBOR *self, SV *cborstr)
		1228	{
		1229	STRLEN cur;
		1230	SvPV (cborstr, cur);
		1231
		1232	while (ecb_expect_true (self->incr_need <= cur))
		1233	{
		1234	// table of integer count bytes
		1235	static I8 incr_len[MINOR_MASK + 1] = {
		1236	0, 0, 0, 0, 0, 0, 0, 0,
		1237	0, 0, 0, 0, 0, 0, 0, 0,
		1238	0, 0, 0, 0, 0, 0, 0, 0,
		1239	1, 2, 4, 8,-1,-1,-1,-2
		1240	};
		1241
		1242	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1243	U8 m = *p & MINOR_MASK;
		1244	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1245	I8 ilen = incr_len[m];
		1246
		1247	self->incr_need = self->incr_pos + 1;
		1248
		1249	if (ecb_expect_false (ilen < 0))
		1250	{
		1251	if (m != MINOR_INDEF)
		1252	return 1; // error
		1253
		1254	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1255	{
		1256	if (count >= 0)
		1257	return 1; // error
		1258
		1259	count = 1;
		1260	}
		1261	else
		1262	{
		1263	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1264	count = -1;
		1265	}
		1266	}
		1267	else
		1268	{
		1269	self->incr_need += ilen;
		1270	if (ecb_expect_false (self->incr_need > cur))
		1271	return 0;
		1272
		1273	int major = *p >> MAJOR_SHIFT;
		1274
		1275	switch (major)
		1276	{
		1277	case MAJOR_TAG >> MAJOR_SHIFT:
		1278	++count; // tags merely prefix another value
		1279	break;
		1280
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1284	case MAJOR_MAP >> MAJOR_SHIFT:
		1285	{
		1286	UV len;
		1287
		1288	if (ecb_expect_false (ilen))
		1289	{
		1290	len = 0;
		1291
		1292	do {
		1293	len = (len << 8) | *++p;
		1294	} while (--ilen);
		1295	}
		1296	else
		1297	len = m;
		1298
		1299	switch (major)
		1300	{
		1301	case MAJOR_BYTES >> MAJOR_SHIFT:
		1302	case MAJOR_TEXT >> MAJOR_SHIFT:
		1303	self->incr_need += len;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	break;
		1308
		1309	case MAJOR_MAP >> MAJOR_SHIFT:
		1310	len <<= 1;
		1311	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1312	if (len)
		1313	{
		1314	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1315	count = len + 1;
		1316	}
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322
		1323	self->incr_pos = self->incr_need;
		1324
		1325	if (count > 0)
		1326	{
		1327	while (!--count)
		1328	{
		1329	if (!AvFILLp (self->incr_count))
		1330	return 1; // done
		1331
		1332	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1333	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1334	}
		1335
		1336	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1337	}
		1338	}
		1339
		1340	return 0;
		1341	}
		1342
		1343
997	/////////////////////////////////////////////////////////////////////////////	1344	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1345	// XS interface functions
999		1346
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1347	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1348
1002	BOOT:	1349	BOOT:
1003	{	1350	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1351	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1352	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1353
1007	cbor_true = get_bool ("CBOR::XS::true");	1354	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	cbor_false = get_bool ("CBOR::XS::false");	1355	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1356
		1357	types_true = get_bool ("Types::Serialiser::true" );
		1358	types_false = get_bool ("Types::Serialiser::false");
		1359	types_error = get_bool ("Types::Serialiser::error");
		1360
		1361	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1362
		1363	sv_cbor = newSVpv ("CBOR", 0);
		1364	SvREADONLY_on (sv_cbor);
1009	}	1365	}
1010		1366
1011	PROTOTYPES: DISABLE	1367	PROTOTYPES: DISABLE
1012		1368
1013	void CLONE (...)	1369	void CLONE (...)
1014	CODE:	1370	CODE:
1015	cbor_stash = 0;	1371	cbor_stash = 0;
		1372	cbor_tagged_stash = 0;
		1373	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1374	types_boolean_stash = 0;
1017		1375
1018	void new (char *klass)	1376	void new (char *klass)
1019	PPCODE:	1377	PPCODE:
1020	{	1378	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1379	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1387
1030	void shrink (CBOR *self, int enable = 1)	1388	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1389	ALIAS:
1032	shrink = F_SHRINK	1390	shrink = F_SHRINK
1033	allow_unknown = F_ALLOW_UNKNOWN	1391	allow_unknown = F_ALLOW_UNKNOWN
		1392	allow_sharing = F_ALLOW_SHARING
		1393	allow_cycles = F_ALLOW_CYCLES
		1394	pack_strings = F_PACK_STRINGS
		1395	validate_utf8 = F_VALIDATE_UTF8
1034	PPCODE:	1396	PPCODE:
1035	{	1397	{
1036	if (enable)	1398	if (enable)
1037	self->flags |= ix;	1399	self->flags |= ix;
1038	else	1400	else
…		…
1043		1405
1044	void get_shrink (CBOR *self)	1406	void get_shrink (CBOR *self)
1045	ALIAS:	1407	ALIAS:
1046	get_shrink = F_SHRINK	1408	get_shrink = F_SHRINK
1047	get_allow_unknown = F_ALLOW_UNKNOWN	1409	get_allow_unknown = F_ALLOW_UNKNOWN
		1410	get_allow_sharing = F_ALLOW_SHARING
		1411	get_allow_cycles = F_ALLOW_CYCLES
		1412	get_pack_strings = F_PACK_STRINGS
		1413	get_validate_utf8 = F_VALIDATE_UTF8
1048	PPCODE:	1414	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1415	XPUSHs (boolSV (self->flags & ix));
1050		1416
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1417	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1418	PPCODE:
…		…
1068	CODE:	1434	CODE:
1069	RETVAL = self->max_size;	1435	RETVAL = self->max_size;
1070	OUTPUT:	1436	OUTPUT:
1071	RETVAL	1437	RETVAL
1072		1438
1073	#if 0 //TODO	1439	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1440	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1441	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1442	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1443	XPUSHs (ST (0));
1082	}
1083		1444
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1445	SV *get_filter (CBOR *self)
1085	PPCODE:	1446	CODE:
1086	{	1447	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1448	OUTPUT:
1088	self->cb_sk_object = newHV ();	1449	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1450
1108	void encode (CBOR *self, SV *scalar)	1451	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1452	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1453	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1454	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1467	EXTEND (SP, 2);
1125	PUSHs (sv);	1468	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1469	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1470	}
1128		1471
		1472	void incr_parse (CBOR *self, SV *cborstr)
		1473	ALIAS:
		1474	incr_parse_multiple = 1
		1475	PPCODE:
		1476	{
		1477	if (SvUTF8 (cborstr))
		1478	sv_utf8_downgrade (cborstr, 0);
		1479
		1480	if (!self->incr_count)
		1481	{
		1482	self->incr_count = newAV ();
		1483	self->incr_pos = 0;
		1484	self->incr_need = 1;
		1485
		1486	av_push (self->incr_count, newSViv (1));
		1487	}
		1488
		1489	do
		1490	{
		1491	if (!incr_parse (self, cborstr))
		1492	{
		1493	if (self->incr_need > self->max_size && self->max_size)
		1494	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1495	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1496
		1497	break;
		1498	}
		1499
		1500	SV *sv;
		1501	char *offset;
		1502
		1503	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1504	XPUSHs (sv);
		1505
		1506	sv_chop (cborstr, offset);
		1507
		1508	av_clear (self->incr_count);
		1509	av_push (self->incr_count, newSViv (1));
		1510
		1511	self->incr_pos = 0;
		1512	self->incr_need = self->incr_pos + 1;
		1513	}
		1514	while (ix);
		1515	}
		1516
		1517	void incr_reset (CBOR *self)
		1518	CODE:
		1519	{
		1520	SvREFCNT_dec (self->incr_count);
		1521	self->incr_count = 0;
		1522	}
		1523
1129	void DESTROY (CBOR *self)	1524	void DESTROY (CBOR *self)
1130	CODE:	1525	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1526	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1527
1134	PROTOTYPES: ENABLE	1528	PROTOTYPES: ENABLE
1135		1529
1136	void encode_cbor (SV *scalar)	1530	void encode_cbor (SV *scalar)
		1531	ALIAS:
		1532	encode_cbor = 0
		1533	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1534	PPCODE:
1138	{	1535	{
1139	CBOR cbor;	1536	CBOR cbor;
1140	cbor_init (&cbor);	1537	cbor_init (&cbor);
		1538	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1539	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1540	XPUSHs (scalar);
1143	}	1541	}
1144		1542
1145	void decode_cbor (SV *cborstr)	1543	void decode_cbor (SV *cborstr)

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