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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.4 by root, Sat Oct 26 21:06:37 2013 UTC vs.
Revision 1.49 by root, Mon Feb 8 04:11:11 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
16		106
17	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
18		108
19	#define SB do {	109	#define SB do {
20	#define SE } while (0)	110	#define SE } while (0)
21
22	#if __GNUC__ >= 3
23	# define expect(expr,value) __builtin_expect ((expr), (value))
24	# define INLINE static inline
25	#else
26	# define expect(expr,value) (expr)
27	# define INLINE static
28	#endif
29
30	#define expect_false(expr) expect ((expr) != 0, 0)
31	#define expect_true(expr) expect ((expr) != 0, 1)
32		111
33	#define IN_RANGE_INC(type,val,beg,end) \	112	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	113	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	114	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		115
…		…
42	#else	121	#else
43	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
45	#endif	124	#endif
46		125
47	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
48	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		128
50	typedef struct {	129	typedef struct {
51	U32 flags;	130	U32 flags;
52	U32 max_depth;	131	U32 max_depth;
53	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
54		134
55	SV *cb_object;	135	// for the incremental parser
56	HV *cb_sk_object;	136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
57	} CBOR;	139	} CBOR;
58		140
59	INLINE void	141	ecb_inline void
60	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
61	{	143	{
62	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	145	cbor->max_depth = 512;
64	}	146	}
65		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
		153	}
		154
66	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	156	// utility functions
68		157
69	INLINE SV *	158	ecb_inline SV *
70	get_bool (const char *name)	159	get_bool (const char *name)
71	{	160	{
72	SV *sv = get_sv (name, 1);	161	SV *sv = get_sv (name, 1);
73		162
74	SvREADONLY_on (sv);	163	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	164	SvREADONLY_on (SvRV (sv));
76		165
77	return sv;	166	return sv;
78	}	167	}
79		168
80	INLINE void	169	ecb_inline void
81	shrink (SV *sv)	170	shrink (SV *sv)
82	{	171	{
83	sv_utf8_downgrade (sv, 1);	172	sv_utf8_downgrade (sv, 1);
84		173
85	if (SvLEN (sv) > SvCUR (sv) + 1)	174	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	180	#endif
92	}	181	}
93	}	182	}
94		183
95	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
96	// fp hell	185	ecb_inline int
97		186	minimum_string_length (UV idx)
98	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
99		198
100	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
101	// encoder	200	// encoder
102		201
103	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
108	SV *sv; // result scalar	207	SV *sv; // result scalar
109	CBOR cbor;	208	CBOR cbor;
110	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
111	} enc_t;	214	} enc_t;
112		215
113	INLINE void	216	ecb_inline void
114	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
115	{	218	{
116	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	220	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	225	}
123	}	226	}
124		227
125	INLINE void	228	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
127	{	230	{
128	need (enc, 1);	231	need (enc, 1);
129	*enc->cur++ = ch;	232	*enc->cur++ = ch;
130	}	233	}
…		…
132	static void	235	static void
133	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
134	{	237	{
135	need (enc, 9);	238	need (enc, 9);
136		239
137	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
139	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
140	{	243	{
141	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	245	*enc->cur++ = len;
143	}	246	}
144	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
145	{	248	{
146	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	251	*enc->cur++ = len;
149	}	252	}
150	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
151	{	254	{
152	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	259	*enc->cur++ = len;
157	}	260	}
158	else	261	else
159	{	262	{
160	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	271	*enc->cur++ = len;
169	}	272	}
170	}	273	}
171		274
172	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	ecb_inline void
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	283	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	285	need (enc, len);
177	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
178	enc->cur += len;	287	enc->cur += len;
179	}	288	}
180		289
		290	static void
		291	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
181	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
182		316
183	static void	317	static void
184	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
185	{	319	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
190		324
191	++enc->depth;	325	++enc->depth;
192		326
193	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		328
		329	if (SvMAGICAL (av))
195	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
196	{	331	{
197	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
199	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	{
		338	SV *sv = AvARRAY (av)[i];
		339	encode_sv (enc, sv ? sv : &PL_sv_undef);
		340	}
200		341
201	--enc->depth;	342	--enc->depth;
202	}	343	}
203		344
204	static void	345	static void
…		…
213		354
214	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
216		357
217	if (mg)	358	if (mg)
218	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	360	else
220	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
221		362
222	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
223	{	364	{
224	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
226	else	367	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		369
229	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));
230	}	371	}
231		372
232	if (mg)	373	if (mg)
233	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		375
235	--enc->depth;	376	--enc->depth;
236	}	377	}
237		378
238	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
239	static void	380	static void
240	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
241	{	382	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
245	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
246		386
247	if (expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
248	{	388	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? 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
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		398
253	if (SvSTASH (sv) == stash)	399	HV *stash = SvSTASH (sv);
254	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	}
255	else	437	else
256	{	438	{
257	#if 0 //TODO	439	sv_setuv (*svp, enc->shareable_idx);
258	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)))
259	{	451	{
		452	dSP;
		453
		454	ENTER; SAVETMPS; PUSHMARK (SP);
260	// we re-bless the reference to get overload and other niceties right	455	// we re-bless the reference to get overload and other niceties right
261	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
262
263	if (to_cbor)
264	{
265	dSP;
266
267	ENTER; SAVETMPS; PUSHMARK (SP);
268	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	456	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		457
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	458	PUTBACK;
		459	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	460	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	461	SPAGAIN;
274		462
275	// catch this surprisingly common error	463	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	464	if (SvROK (TOPs) && SvRV (TOPs) == sv)
277	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	465	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
278		466
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	467	encode_sv (enc, POPs);
283		468
		469	PUTBACK;
		470
284	FREETMPS; LEAVE;	471	FREETMPS; LEAVE;
285	}
286	else if (enc->cbor.flags & F_ALLOW_BLESSED)
287	encode_str (enc, "null", 4, 0);
288	else
289	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
290	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
291	}	472	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	473	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	encode_str (enc, "null", 4, 0);	474	{
		475	dSP;
		476
		477	ENTER; SAVETMPS; PUSHMARK (SP);
		478	EXTEND (SP, 2);
		479	// we re-bless the reference to get overload and other niceties right
		480	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		481	PUSHs (sv_cbor);
		482
		483	PUTBACK;
		484	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		485	SPAGAIN;
		486
		487	// catch this surprisingly common error
		488	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		489	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		490
		491	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		492	encode_uint (enc, MAJOR_ARRAY, count + 1);
		493	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		494
		495	while (count)
		496	encode_sv (enc, SP[1 - count--]);
		497
		498	PUTBACK;
		499
		500	FREETMPS; LEAVE;
		501	}
294	else	502	else
295	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	503	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	505	}
300	else if (svt == SVt_PVHV)	506	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	507	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	508	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	509	encode_av (enc, (AV *)sv);
304	else if (svt < SVt_PVAV)
305	{
306	STRLEN len = 0;
307	char *pv = svt ? SvPV (sv, len) : 0;
308
309	if (len == 1 && *pv == '1')
310	encode_ch (enc, 0xe0 | 21);
311	else if (len == 1 && *pv == '0')
312	encode_ch (enc, 0xe0 | 20);
313	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
314	encode_ch (enc, 0xe0 | 23);
315	else
316	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
317	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
318	}
319	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
320	encode_ch (enc, 0xe0 | 23);
321	else	510	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	511	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	512	encode_tag (enc, CBOR_TAG_INDIRECTION);
		513	encode_sv (enc, sv);
		514	}
324	}	515	}
325		516
326	static void	517	static void
327	encode_nv (enc_t *enc, SV *sv)	518	encode_nv (enc_t *enc, SV *sv)
328	{	519	{
329	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
330		521
331	need (enc, 9);	522	need (enc, 9);
332		523
333	if (expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	526	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
337	{	528	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
339		530
340	*enc->cur++ = 0xe0 | 26;	531	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		532
342	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
344		535
345	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
347	}	538	}
348	else	539	else
349	{	540	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
351		542
352	*enc->cur++ = 0xe0 | 27;	543	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		544
354	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
356		547
357	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
366		557
367	if (SvPOKp (sv))	558	if (SvPOKp (sv))
368	{	559	{
369	STRLEN len;	560	STRLEN len;
370	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	563	}
373	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	565	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
376	{	567	{
377	if (SvIsUV (sv))	568	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	572	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	574	}
384	else if (SvROK (sv))	575	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	577	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	578	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	580	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	581	else
391	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	582	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	584	}
394		585
395	static SV *	586	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	587	encode_cbor (SV *scalar, CBOR *cbor)
397	{	588	{
398	enc_t enc;	589	enc_t enc = { 0 };
399		590
400	enc.cbor = *cbor;	591	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		595
406	SvPOK_only (enc.sv);	596	SvPOK_only (enc.sv);
		597
		598	if (cbor->flags & F_PACK_STRINGS)
		599	{
		600	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		601	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		602	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		603	}
		604
407	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
408		606
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	608	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
411		609
…		…
425	U8 *end; // end of input string	623	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
427	CBOR cbor;	625	CBOR cbor;
428	U32 depth; // recursion depth	626	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
		628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
430	} dec_t;	631	} dec_t;
431		632
432	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	633	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
433		634
434	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	635	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
435		636
436	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	637	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
437	#define DEC_DEC_DEPTH --dec->depth	638	#define DEC_DEC_DEPTH --dec->depth
438		639
439	static UV	640	static UV
440	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
441	{	642	{
442	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
443	{	644	++dec->cur;
444	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
445	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
446	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
447	return *dec->cur++ & 31;
448		645
449	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
450	WANT (2);	650	WANT (1);
451	dec->cur += 2;	651	dec->cur += 1;
452	return dec->cur[-1];	652	return dec->cur[-1];
453		653	}
454	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
455	WANT (3);	656	WANT (2);
456	dec->cur += 3;	657	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	659	| ((UV)dec->cur[-1]);
459		660	}
460	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
461	WANT (5);	663	WANT (4);
462	dec->cur += 5;	664	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	666	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	667	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	668	| ((UV)dec->cur[-1]);
467		669	}
468	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
469	WANT (9);	672	WANT (8);
470	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
471	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	680	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	681	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	682	| (((UV)dec->cur[-5]) << 32)
		683	#endif
475	| (((UV)dec->cur[-4]) << 24)	684	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	685	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	686	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	687	| ((UV)dec->cur[-1]);
479		688	}
480	default:	689	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		691
484	fail:	692	fail:
485	return 0;	693	return 0;
486	}	694	}
487		695
…		…
492	{	700	{
493	AV *av = newAV ();	701	AV *av = newAV ();
494		702
495	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
496		704
497	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	706	{
499	++dec->cur;	707	++dec->cur;
500		708
501	for (;;)	709	for (;;)
502	{	710	{
503	WANT (1);	711	WANT (1);
504		712
505	if (*dec->cur == (0xe0 | 31))	713	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	714	{
507	++dec->cur;	715	++dec->cur;
508	break;	716	break;
509	}	717	}
510		718
…		…
513	}	721	}
514	else	722	else
515	{	723	{
516	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
517		725
		726	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
518	av_fill (av, len - 1);	727	av_fill (av, len - 1);
519		728
520	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
522	}	731	}
…		…
528	SvREFCNT_dec (av);	737	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	738	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	739	return &PL_sv_undef;
531	}	740	}
532		741
		742	static void
		743	decode_he (dec_t *dec, HV *hv)
		744	{
		745	// for speed reasons, we specialcase single-string
		746	// byte or utf-8 strings as keys, but only when !stringref
		747
		748	if (ecb_expect_true (!dec->stringref))
		749	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		750	{
		751	I32 len = decode_uint (dec);
		752	char *key = (char *)dec->cur;
		753
		754	WANT (len);
		755	dec->cur += len;
		756
		757	hv_store (hv, key, len, decode_sv (dec), 0);
		758
		759	return;
		760	}
		761	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		762	{
		763	I32 len = decode_uint (dec);
		764	char *key = (char *)dec->cur;
		765
		766	WANT (len);
		767	dec->cur += len;
		768
		769	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		770	if (!is_utf8_string (key, len))
		771	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		772
		773	hv_store (hv, key, -len, decode_sv (dec), 0);
		774
		775	return;
		776	}
		777
		778	SV *k = decode_sv (dec);
		779	SV *v = decode_sv (dec);
		780
		781	hv_store_ent (hv, k, v, 0);
		782	SvREFCNT_dec (k);
		783
		784	fail:
		785	;
		786	}
		787
533	static SV *	788	static SV *
534	decode_hv (dec_t *dec)	789	decode_hv (dec_t *dec)
535	{	790	{
536	HV *hv = newHV ();	791	HV *hv = newHV ();
537		792
538	DEC_INC_DEPTH;	793	DEC_INC_DEPTH;
539		794
540	if ((*dec->cur & 31) == 31)	795	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	796	{
542	++dec->cur;	797	++dec->cur;
543		798
544	for (;;)	799	for (;;)
545	{	800	{
546	WANT (1);	801	WANT (1);
547		802
548	if (*dec->cur == (0xe0 | 31))	803	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	804	{
550	++dec->cur;	805	++dec->cur;
551	break;	806	break;
552	}	807	}
553		808
554	SV *k = decode_sv (dec);	809	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	810	}
559	}	811	}
560	else	812	else
561	{	813	{
562	int len = decode_uint (dec);	814	int pairs = decode_uint (dec);
563		815
564	while (len--)	816	while (pairs--)
565	{	817	decode_he (dec, hv);
566	SV *k = decode_sv (dec);
567	SV *v = decode_sv (dec);
568
569	hv_store_ent (hv, k, v, 0);
570	}
571	}	818	}
572		819
573	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	821	return newRV_noinc ((SV *)hv);
575
576	#if 0
577	SV *sv;
578	HV *hv = newHV ();
579
580	DEC_INC_DEPTH;
581	decode_ws (dec);
582
583	for (;;)
584	{
585	// heuristic: assume that
586	// a) decode_str + hv_store_ent are abysmally slow.
587	// b) most hash keys are short, simple ascii text.
588	// => try to "fast-match" such strings to avoid
589	// the overhead of decode_str + hv_store_ent.
590	{
591	SV *value;
592	char *p = dec->cur;
593	char *e = p + 24; // only try up to 24 bytes
594
595	for (;;)
596	{
597	// the >= 0x80 is false on most architectures
598	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
599	{
600	// slow path, back up and use decode_str
601	SV *key = decode_str (dec);
602	if (!key)
603	goto fail;
604
605	decode_ws (dec); EXPECT_CH (':');
606
607	decode_ws (dec);
608	value = decode_sv (dec);
609	if (!value)
610	{
611	SvREFCNT_dec (key);
612	goto fail;
613	}
614
615	hv_store_ent (hv, key, value, 0);
616	SvREFCNT_dec (key);
617
618	break;
619	}
620	else if (*p == '"')
621	{
622	// fast path, got a simple key
623	char *key = dec->cur;
624	int len = p - key;
625	dec->cur = p + 1;
626
627	decode_ws (dec); EXPECT_CH (':');
628
629	decode_ws (dec);
630	value = decode_sv (dec);
631	if (!value)
632	goto fail;
633
634	hv_store (hv, key, len, value, 0);
635
636	break;
637	}
638
639	++p;
640	}
641	}
642
643	decode_ws (dec);
644
645	if (*dec->cur == '}')
646	{
647	++dec->cur;
648	break;
649	}
650
651	if (*dec->cur != ',')
652	ERR (", or } expected while parsing object/hash");
653
654	++dec->cur;
655
656	decode_ws (dec);
657
658	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
659	{
660	++dec->cur;
661	break;
662	}
663	}
664
665	DEC_DEC_DEPTH;
666	sv = newRV_noinc ((SV *)hv);
667
668	// check filter callbacks
669	if (dec->cbor.flags & F_HOOK)
670	{
671	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
672	{
673	HE *cb, *he;
674
675	hv_iterinit (hv);
676	he = hv_iternext (hv);
677	hv_iterinit (hv);
678
679	// the next line creates a mortal sv each time its called.
680	// might want to optimise this for common cases.
681	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
682
683	if (cb)
684	{
685	dSP;
686	int count;
687
688	ENTER; SAVETMPS; PUSHMARK (SP);
689	XPUSHs (HeVAL (he));
690	sv_2mortal (sv);
691
692	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
693
694	if (count == 1)
695	{
696	sv = newSVsv (POPs);
697	FREETMPS; LEAVE;
698	return sv;
699	}
700
701	SvREFCNT_inc (sv);
702	FREETMPS; LEAVE;
703	}
704	}
705
706	if (dec->cbor.cb_object)
707	{
708	dSP;
709	int count;
710
711	ENTER; SAVETMPS; PUSHMARK (SP);
712	XPUSHs (sv_2mortal (sv));
713
714	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
715
716	if (count == 1)
717	{
718	sv = newSVsv (POPs);
719	FREETMPS; LEAVE;
720	return sv;
721	}
722
723	SvREFCNT_inc (sv);
724	FREETMPS; LEAVE;
725	}
726	}
727
728	return sv;
729	#endif
730		822
731	fail:	823	fail:
732	SvREFCNT_dec (hv);	824	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	825	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	826	return &PL_sv_undef;
735	}	827	}
736		828
737	static SV *	829	static SV *
738	decode_str (dec_t *dec, int utf8)	830	decode_str (dec_t *dec, int utf8)
739	{	831	{
740	SV *sv;	832	SV *sv = 0;
741		833
742	if ((*dec->cur & 31) == 31)	834	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	835	{
		836	// indefinite length strings
744	++dec->cur;	837	++dec->cur;
745		838
		839	U8 major = *dec->cur & MAJOR_MISC;
		840
746	sv = newSVpvn ("", 0);	841	sv = newSVpvn ("", 0);
747		842
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	843	for (;;)
750	{	844	{
751	WANT (1);	845	WANT (1);
752		846
753	if (*dec->cur == (0xe0 | 31))	847	if ((*dec->cur - major) > LENGTH_EXT8)
		848	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	849	{
755	++dec->cur;	850	++dec->cur;
756	break;	851	break;
757	}	852	}
		853	else
		854	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		855
759	SV *sv2 = decode_sv (dec);	856	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	857
		858	WANT (len);
		859	sv_catpvn (sv, dec->cur, len);
		860	dec->cur += len;
761	}	861	}
762	}	862	}
763	else	863	else
764	{	864	{
765	STRLEN len = decode_uint (dec);	865	STRLEN len = decode_uint (dec);
766		866
767	WANT (len);	867	WANT (len);
768	sv = newSVpvn (dec->cur, len);	868	sv = newSVpvn (dec->cur, len);
769	dec->cur += len;	869	dec->cur += len;
		870
		871	if (ecb_expect_false (dec->stringref)
		872	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		873	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	874	}
771		875
772	if (utf8)	876	if (utf8)
		877	{
		878	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		879	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		880	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		881
773	SvUTF8_on (sv);	882	SvUTF8_on (sv);
		883	}
774		884
775	return sv;	885	return sv;
776		886
777	fail:	887	fail:
		888	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	889	return &PL_sv_undef;
779	}	890	}
780		891
781	static SV *	892	static SV *
782	decode_tagged (dec_t *dec)	893	decode_tagged (dec_t *dec)
783	{	894	{
		895	SV *sv = 0;
784	UV tag = decode_uint (dec);	896	UV tag = decode_uint (dec);
		897
		898	WANT (1);
		899
		900	switch (tag)
		901	{
		902	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	903	sv = decode_sv (dec);
		904	break;
786		905
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	906	case CBOR_TAG_INDIRECTION:
		907	sv = newRV_noinc (decode_sv (dec));
		908	break;
		909
		910	case CBOR_TAG_STRINGREF_NAMESPACE:
		911	{
		912	ENTER; SAVETMPS;
		913
		914	SAVESPTR (dec->stringref);
		915	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		916
		917	sv = decode_sv (dec);
		918
		919	FREETMPS; LEAVE;
		920	}
		921	break;
		922
		923	case CBOR_TAG_STRINGREF:
		924	{
		925	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		926	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		927
		928	UV idx = decode_uint (dec);
		929
		930	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		931	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		932
		933	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		934	}
		935	break;
		936
		937	case CBOR_TAG_VALUE_SHAREABLE:
		938	{
		939	if (ecb_expect_false (!dec->shareable))
		940	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		941
		942	if (dec->cbor.flags & F_ALLOW_CYCLES)
		943	{
		944	sv = newSV (0);
		945	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		946
		947	SV *osv = decode_sv (dec);
		948	sv_setsv (sv, osv);
		949	SvREFCNT_dec_NN (osv);
		950	}
		951	else
		952	{
		953	av_push (dec->shareable, &PL_sv_undef);
		954	int idx = AvFILLp (dec->shareable);
		955	sv = decode_sv (dec);
		956	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		957	}
		958	}
		959	break;
		960
		961	case CBOR_TAG_VALUE_SHAREDREF:
		962	{
		963	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		964	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		965
		966	UV idx = decode_uint (dec);
		967
		968	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		969	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		970
		971	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		972
		973	if (sv == &PL_sv_undef)
		974	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		975	}
		976	break;
		977
		978	case CBOR_TAG_PERL_OBJECT:
		979	{
		980	sv = decode_sv (dec);
		981
		982	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		983	ERR ("corrupted CBOR data (non-array perl object)");
		984
		985	AV *av = (AV *)SvRV (sv);
		986	int len = av_len (av) + 1;
		987	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		988
		989	if (!stash)
		990	ERR ("cannot decode perl-object (package does not exist)");
		991
		992	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		993
		994	if (!method)
		995	ERR ("cannot decode perl-object (package does not have a THAW method)");
		996
		997	dSP;
		998
		999	ENTER; SAVETMPS; PUSHMARK (SP);
		1000	EXTEND (SP, len + 1);
		1001	// we re-bless the reference to get overload and other niceties right
		1002	PUSHs (*av_fetch (av, 0, 1));
		1003	PUSHs (sv_cbor);
		1004
		1005	int i;
		1006
		1007	for (i = 1; i < len; ++i)
		1008	PUSHs (*av_fetch (av, i, 1));
		1009
		1010	PUTBACK;
		1011	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1012	SPAGAIN;
		1013
		1014	if (SvTRUE (ERRSV))
		1015	{
		1016	FREETMPS; LEAVE;
		1017	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1018	}
		1019
		1020	SvREFCNT_dec (sv);
		1021	sv = SvREFCNT_inc (POPs);
		1022
		1023	PUTBACK;
		1024
		1025	FREETMPS; LEAVE;
		1026	}
		1027	break;
		1028
		1029	default:
		1030	{
		1031	sv = decode_sv (dec);
		1032
		1033	dSP;
		1034	ENTER; SAVETMPS; PUSHMARK (SP);
		1035	EXTEND (SP, 2);
		1036	PUSHs (newSVuv (tag));
		1037	PUSHs (sv);
		1038
		1039	PUTBACK;
		1040	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1041	SPAGAIN;
		1042
		1043	if (SvTRUE (ERRSV))
		1044	{
		1045	FREETMPS; LEAVE;
		1046	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1047	}
		1048
		1049	if (count)
		1050	{
		1051	SvREFCNT_dec (sv);
		1052	sv = SvREFCNT_inc (POPs);
		1053	}
		1054	else
		1055	{
		1056	AV *av = newAV ();
		1057	av_push (av, newSVuv (tag));
		1058	av_push (av, sv);
		1059
		1060	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1061	? cbor_tagged_stash
		1062	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1063	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1064	}
		1065
		1066	PUTBACK;
		1067
		1068	FREETMPS; LEAVE;
		1069	}
		1070	break;
		1071	}
		1072
788	return sv;	1073	return sv;
789		1074
790	AV *av = newAV ();	1075	fail:
791	av_push (av, newSVuv (tag));	1076	SvREFCNT_dec (sv);
792	av_push (av, sv);	1077	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1078	}
795		1079
796	static SV *	1080	static SV *
797	decode_sv (dec_t *dec)	1081	decode_sv (dec_t *dec)
798	{	1082	{
799	WANT (1);	1083	WANT (1);
800		1084
801	switch (*dec->cur >> 5)	1085	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1086	{
803	case 0: // unsigned int	1087	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1088	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1089	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1090	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1091	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1092	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1093	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1094
811	return decode_str (dec, 1);	1095	case MAJOR_MISC >> MAJOR_SHIFT:
812	case 4: // array
813	return decode_av (dec);
814	case 5: // map
815	return decode_hv (dec);
816	case 6: // tag
817	return decode_tagged (dec);
818	case 7: // misc
819	switch (*dec->cur++ & 31)	1096	switch (*dec->cur++ & MINOR_MASK)
820	{	1097	{
821	case 20:	1098	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1099	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1100	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1101	#endif
825	return newSVsv (cbor_false);	1102	return newSVsv (types_false);
826	case 21:	1103	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1104	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1105	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1106	#endif
830	return newSVsv (cbor_true);	1107	return newSVsv (types_true);
831	case 22:	1108	case SIMPLE_NULL:
832	return newSVsv (&PL_sv_undef);	1109	return newSVsv (&PL_sv_undef);
		1110	case SIMPLE_UNDEF:
		1111	#if CBOR_SLOW
		1112	types_error = get_bool ("Types::Serialiser::error");
		1113	#endif
		1114	return newSVsv (types_error);
833		1115
834	case 25:	1116	case MISC_FLOAT16:
835	{	1117	{
836	WANT (2);	1118	WANT (2);
837		1119
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1120	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1121	dec->cur += 2;
840		1122
841	return newSVnv (ecb_binary16_to_float (fp));	1123	return newSVnv (ecb_binary16_to_float (fp));
842	}	1124	}
843		1125
844	case 26:	1126	case MISC_FLOAT32:
845	{	1127	{
846	uint32_t fp;	1128	uint32_t fp;
847	WANT (4);	1129	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1130	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1131	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1134	fp = ecb_bswap32 (fp);
853		1135
854	return newSVnv (ecb_binary32_to_float (fp));	1136	return newSVnv (ecb_binary32_to_float (fp));
855	}	1137	}
856		1138
857	case 27:	1139	case MISC_FLOAT64:
858	{	1140	{
859	uint64_t fp;	1141	uint64_t fp;
860	WANT (8);	1142	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1143	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1144	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1147	fp = ecb_bswap64 (fp);
866		1148
867	return newSVnv (ecb_binary64_to_double (fp));	1149	return newSVnv (ecb_binary64_to_double (fp));
868	}	1150	}
869		1151
870	// 0..19 unassigned	1152	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1153	// 24 reserved + unassigned simple (reserved values are not encodable)
		1154	// 28-30 unassigned misc
		1155	// 31 break code
872	default:	1156	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1157	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
874	}	1158	}
875		1159
876	break;	1160	break;
877	}	1161	}
878	#if 0
879	switch (*dec->cur)
880	{
881	//case '"': ++dec->cur; return decode_str (dec);
882	case '[': ++dec->cur; return decode_av (dec);
883	case '{': ++dec->cur; return decode_hv (dec);
884
885	case '-':
886	case '0': case '1': case '2': case '3': case '4':
887	case '5': case '6': case '7': case '8': case '9':
888	//TODO return decode_num (dec);
889
890	case 't':
891	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
892	{
893	dec->cur += 4;
894	#if CBOR_SLOW
895	cbor_true = get_bool ("CBOR::XS::true");
896	#endif
897	return newSVsv (cbor_true);
898	}
899	else
900	ERR ("'true' expected");
901
902	break;
903
904	case 'f':
905	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
906	{
907	dec->cur += 5;
908	#if CBOR_SLOW
909	cbor_false = get_bool ("CBOR::XS::false");
910	#endif
911	return newSVsv (cbor_false);
912	}
913	else
914	ERR ("'false' expected");
915
916	break;
917
918	case 'n':
919	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
920	{
921	dec->cur += 4;
922	return newSVsv (&PL_sv_undef);
923	}
924	else
925	ERR ("'null' expected");
926
927	break;
928
929	default:
930	ERR ("malformed CBOR string, neither array, object, number, string or atom");
931	break;
932	}
933	#endif
934		1162
935	fail:	1163	fail:
936	return &PL_sv_undef;	1164	return &PL_sv_undef;
937	}	1165	}
938		1166
939	static SV *	1167	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1168	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1169	{
942	dec_t dec;	1170	dec_t dec = { 0 };
943	SV *sv;	1171	SV *sv;
		1172	STRLEN len;
		1173	char *data = SvPVbyte (string, len);
944		1174
945	/* work around bugs in 5.10 where manipulating magic values
946	* makes perl ignore the magic in subsequent accesses.
947	* also make a copy of non-PV values, to get them into a clean
948	* state (SvPV should do that, but it's buggy, see below).
949	*/
950	/*SvGETMAGIC (string);*/
951	if (SvMAGICAL (string) || !SvPOK (string))
952	string = sv_2mortal (newSVsv (string));
953
954	SvUPGRADE (string, SVt_PV);
955
956	/* work around a bug in perl 5.10, which causes SvCUR to fail an
957	* assertion with -DDEBUGGING, although SvCUR is documented to
958	* return the xpv_cur field which certainly exists after upgrading.
959	* according to nicholas clark, calling SvPOK fixes this.
960	* But it doesn't fix it, so try another workaround, call SvPV_nolen
961	* and hope for the best.
962	* Damnit, SvPV_nolen still trips over yet another assertion. This
963	* assertion business is seriously broken, try yet another workaround
964	* for the broken -DDEBUGGING.
965	*/
966	{
967	#ifdef DEBUGGING
968	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
969	#else
970	STRLEN offset = SvCUR (string);
971	#endif
972
973	if (offset > cbor->max_size && cbor->max_size)	1175	if (len > cbor->max_size && cbor->max_size)
974	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1176	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
975	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1177	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1178
980	dec.cbor = *cbor;	1179	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1180	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1181	dec.end = (U8 *)data + len;
983	dec.err = 0;
984	dec.depth = 0;
985
986	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
987	;//TODO dec.cbor.flags |= F_HOOK;
988		1182
989	sv = decode_sv (&dec);	1183	sv = decode_sv (&dec);
990		1184
991	if (offset_return)	1185	if (offset_return)
992	*offset_return = dec.cur;	1186	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1189	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1190	dec.err = "garbage after CBOR object";
997		1191
998	if (dec.err)	1192	if (dec.err)
999	{	1193	{
		1194	if (dec.shareable)
		1195	{
		1196	// need to break cyclic links, which whould all be in shareable
		1197	int i;
		1198	SV **svp;
		1199
		1200	for (i = av_len (dec.shareable) + 1; i--; )
		1201	if ((svp = av_fetch (dec.shareable, i, 0)))
		1202	sv_setsv (*svp, &PL_sv_undef);
		1203	}
		1204
1000	SvREFCNT_dec (sv);	1205	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1206	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1207	}
1003		1208
1004	sv = sv_2mortal (sv);	1209	sv = sv_2mortal (sv);
1005		1210
1006	return sv;	1211	return sv;
1007	}	1212	}
1008		1213
		1214	/////////////////////////////////////////////////////////////////////////////
		1215	// incremental parser
		1216
		1217	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1218
		1219	// returns 0 for notyet, 1 for success or error
		1220	static int
		1221	incr_parse (CBOR *self, SV *cborstr)
		1222	{
		1223	STRLEN cur;
		1224	SvPV (cborstr, cur);
		1225
		1226	while (ecb_expect_true (self->incr_need <= cur))
		1227	{
		1228	// table of integer count bytes
		1229	static I8 incr_len[MINOR_MASK + 1] = {
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	0, 0, 0, 0, 0, 0, 0, 0,
		1232	0, 0, 0, 0, 0, 0, 0, 0,
		1233	1, 2, 4, 8,-1,-1,-1,-2
		1234	};
		1235
		1236	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1237	U8 m = *p & MINOR_MASK;
		1238	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1239	I8 ilen = incr_len[m];
		1240
		1241	self->incr_need = self->incr_pos + 1;
		1242
		1243	if (ecb_expect_false (ilen < 0))
		1244	{
		1245	if (m != MINOR_INDEF)
		1246	return 1; // error
		1247
		1248	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1249	{
		1250	if (count >= 0)
		1251	return 1; // error
		1252
		1253	count = 1;
		1254	}
		1255	else
		1256	{
		1257	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1258	count = -1;
		1259	}
		1260	}
		1261	else
		1262	{
		1263	self->incr_need += ilen;
		1264	if (ecb_expect_false (self->incr_need > cur))
		1265	return 0;
		1266
		1267	int major = *p >> MAJOR_SHIFT;
		1268
		1269	switch (major)
		1270	{
		1271	case MAJOR_TAG >> MAJOR_SHIFT:
		1272	++count; // tags merely prefix another value
		1273	break;
		1274
		1275	case MAJOR_BYTES >> MAJOR_SHIFT:
		1276	case MAJOR_TEXT >> MAJOR_SHIFT:
		1277	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1278	case MAJOR_MAP >> MAJOR_SHIFT:
		1279	{
		1280	UV len;
		1281
		1282	if (ecb_expect_false (ilen))
		1283	{
		1284	len = 0;
		1285
		1286	do {
		1287	len = (len << 8) | *++p;
		1288	} while (--ilen);
		1289	}
		1290	else
		1291	len = m;
		1292
		1293	switch (major)
		1294	{
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	self->incr_need += len;
		1298	if (ecb_expect_false (self->incr_need > cur))
		1299	return 0;
		1300
		1301	break;
		1302
		1303	case MAJOR_MAP >> MAJOR_SHIFT:
		1304	len <<= 1;
		1305	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1306	if (len)
		1307	{
		1308	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1309	count = len + 1;
		1310	}
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316
		1317	self->incr_pos = self->incr_need;
		1318
		1319	if (count > 0)
		1320	{
		1321	while (!--count)
		1322	{
		1323	if (!AvFILLp (self->incr_count))
		1324	return 1; // done
		1325
		1326	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1327	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1328	}
		1329
		1330	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1331	}
		1332	}
		1333
		1334	return 0;
		1335	}
		1336
		1337
1009	/////////////////////////////////////////////////////////////////////////////	1338	/////////////////////////////////////////////////////////////////////////////
1010	// XS interface functions	1339	// XS interface functions
1011		1340
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1341	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1342
1014	BOOT:	1343	BOOT:
1015	{	1344	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1345	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1346	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1347
1019	cbor_true = get_bool ("CBOR::XS::true");	1348	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1349	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1350
		1351	types_true = get_bool ("Types::Serialiser::true" );
		1352	types_false = get_bool ("Types::Serialiser::false");
		1353	types_error = get_bool ("Types::Serialiser::error");
		1354
		1355	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1356
		1357	sv_cbor = newSVpv ("CBOR", 0);
		1358	SvREADONLY_on (sv_cbor);
1021	}	1359	}
1022		1360
1023	PROTOTYPES: DISABLE	1361	PROTOTYPES: DISABLE
1024		1362
1025	void CLONE (...)	1363	void CLONE (...)
1026	CODE:	1364	CODE:
1027	cbor_stash = 0;	1365	cbor_stash = 0;
		1366	cbor_tagged_stash = 0;
		1367	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1368	types_boolean_stash = 0;
1029		1369
1030	void new (char *klass)	1370	void new (char *klass)
1031	PPCODE:	1371	PPCODE:
1032	{	1372	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1373	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1381
1042	void shrink (CBOR *self, int enable = 1)	1382	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1383	ALIAS:
1044	shrink = F_SHRINK	1384	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1385	allow_unknown = F_ALLOW_UNKNOWN
		1386	allow_sharing = F_ALLOW_SHARING
		1387	allow_cycles = F_ALLOW_CYCLES
		1388	pack_strings = F_PACK_STRINGS
		1389	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1390	PPCODE:
1047	{	1391	{
1048	if (enable)	1392	if (enable)
1049	self->flags |= ix;	1393	self->flags |= ix;
1050	else	1394	else
…		…
1055		1399
1056	void get_shrink (CBOR *self)	1400	void get_shrink (CBOR *self)
1057	ALIAS:	1401	ALIAS:
1058	get_shrink = F_SHRINK	1402	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1403	get_allow_unknown = F_ALLOW_UNKNOWN
		1404	get_allow_sharing = F_ALLOW_SHARING
		1405	get_allow_cycles = F_ALLOW_CYCLES
		1406	get_pack_strings = F_PACK_STRINGS
		1407	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1408	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1409	XPUSHs (boolSV (self->flags & ix));
1062		1410
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1411	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1412	PPCODE:
…		…
1080	CODE:	1428	CODE:
1081	RETVAL = self->max_size;	1429	RETVAL = self->max_size;
1082	OUTPUT:	1430	OUTPUT:
1083	RETVAL	1431	RETVAL
1084		1432
1085	#if 0 //TODO	1433	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1434	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1435	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1436	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1437	XPUSHs (ST (0));
1094	}
1095		1438
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1439	SV *get_filter (CBOR *self)
1097	PPCODE:	1440	CODE:
1098	{	1441	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1442	OUTPUT:
1100	self->cb_sk_object = newHV ();	1443	RETVAL
1101
1102	if (SvOK (cb))
1103	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1104	else
1105	{
1106	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1107
1108	if (!HvKEYS (self->cb_sk_object))
1109	{
1110	SvREFCNT_dec (self->cb_sk_object);
1111	self->cb_sk_object = 0;
1112	}
1113	}
1114
1115	XPUSHs (ST (0));
1116	}
1117
1118	#endif
1119		1444
1120	void encode (CBOR *self, SV *scalar)	1445	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1446	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1447	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1448	XPUSHs (scalar);
…		…
1136	EXTEND (SP, 2);	1461	EXTEND (SP, 2);
1137	PUSHs (sv);	1462	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1463	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1464	}
1140		1465
		1466	void incr_parse (CBOR *self, SV *cborstr)
		1467	ALIAS:
		1468	incr_parse_multiple = 1
		1469	PPCODE:
		1470	{
		1471	if (SvUTF8 (cborstr))
		1472	sv_utf8_downgrade (cborstr, 0);
		1473
		1474	if (!self->incr_count)
		1475	{
		1476	self->incr_count = newAV ();
		1477	self->incr_pos = 0;
		1478	self->incr_need = 1;
		1479
		1480	av_push (self->incr_count, newSViv (1));
		1481	}
		1482
		1483	do
		1484	{
		1485	if (!incr_parse (self, cborstr))
		1486	{
		1487	if (self->incr_need > self->max_size && self->max_size)
		1488	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1489	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1490
		1491	break;
		1492	}
		1493
		1494	SV *sv;
		1495	char *offset;
		1496
		1497	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1498	XPUSHs (sv);
		1499
		1500	sv_chop (cborstr, offset);
		1501
		1502	av_clear (self->incr_count);
		1503	av_push (self->incr_count, newSViv (1));
		1504
		1505	self->incr_pos = 0;
		1506	self->incr_need = self->incr_pos + 1;
		1507	}
		1508	while (ix);
		1509	}
		1510
		1511	void incr_reset (CBOR *self)
		1512	CODE:
		1513	{
		1514	SvREFCNT_dec (self->incr_count);
		1515	self->incr_count = 0;
		1516	}
		1517
1141	void DESTROY (CBOR *self)	1518	void DESTROY (CBOR *self)
1142	CODE:	1519	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1520	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1521
1146	PROTOTYPES: ENABLE	1522	PROTOTYPES: ENABLE
1147		1523
1148	void encode_cbor (SV *scalar)	1524	void encode_cbor (SV *scalar)
		1525	ALIAS:
		1526	encode_cbor = 0
		1527	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1528	PPCODE:
1150	{	1529	{
1151	CBOR cbor;	1530	CBOR cbor;
1152	cbor_init (&cbor);	1531	cbor_init (&cbor);
		1532	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1533	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1534	XPUSHs (scalar);
1155	}	1535	}
1156		1536
1157	void decode_cbor (SV *cborstr)	1537	void decode_cbor (SV *cborstr)

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