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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.2 by root, Sat Oct 26 10:41:12 2013 UTC vs.
Revision 1.47 by root, Mon Apr 27 20:21:53 2015 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; PUSHMARK (SP);
264	// 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
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)));	456	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		457
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	458	PUTBACK;
		459	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	460	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	461	SPAGAIN;
278		462
279	// catch this surprisingly common error	463	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	464	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)));	465	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		466
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	467	encode_sv (enc, POPs);
287		468
		469	PUTBACK;
		470
288	FREETMPS; LEAVE;	471	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	}	472	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	473	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	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	}
298	else	502	else
299	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",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	505	}
304	else if (svt == SVt_PVHV)	506	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	507	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	508	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	509	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	510	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	511	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	512	encode_tag (enc, CBOR_TAG_INDIRECTION);
		513	encode_sv (enc, sv);
		514	}
328	}	515	}
329		516
330	static void	517	static void
331	encode_nv (enc_t *enc, SV *sv)	518	encode_nv (enc_t *enc, SV *sv)
332	{	519	{
333	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
334		521
335	need (enc, 9);	522	need (enc, 9);
336		523
337	if (expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	526	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
341	{	528	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
343		530
344	*enc->cur++ = 0xe0 | 26;	531	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		532
346	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
348		535
349	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
351	}	538	}
352	else	539	else
353	{	540	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
355		542
356	*enc->cur++ = 0xe0 | 27;	543	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		544
358	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
360		547
361	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
370		557
371	if (SvPOKp (sv))	558	if (SvPOKp (sv))
372	{	559	{
373	STRLEN len;	560	STRLEN len;
374	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	563	}
377	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	565	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
380	{	567	{
381	if (SvIsUV (sv))	568	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	572	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	574	}
388	else if (SvROK (sv))	575	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	577	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	578	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	580	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	581	else
395	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",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	584	}
398		585
399	static SV *	586	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	587	encode_cbor (SV *scalar, CBOR *cbor)
401	{	588	{
402	enc_t enc;	589	enc_t enc = { };
403		590
404	enc.cbor = *cbor;	591	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		595
410	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
411	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
412		606
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*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
415		609
…		…
429	U8 *end; // end of input string	623	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
431	CBOR cbor;	625	CBOR cbor;
432	U32 depth; // recursion depth	626	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
		628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
434	} dec_t;	631	} dec_t;
435		632
436	#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
437		634
438	#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")
439		636
440	#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)
441	#define DEC_DEC_DEPTH --dec->depth	638	#define DEC_DEC_DEPTH --dec->depth
442		639
443	static UV	640	static UV
444	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
445	{	642	{
446	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
447	{	644	++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		645
453	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
454	WANT (2);	650	WANT (1);
455	dec->cur += 2;	651	dec->cur += 1;
456	return dec->cur[-1];	652	return dec->cur[-1];
457		653	}
458	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
459	WANT (3);	656	WANT (2);
460	dec->cur += 3;	657	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	659	| ((UV)dec->cur[-1]);
463		660	}
464	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
465	WANT (5);	663	WANT (4);
466	dec->cur += 5;	664	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	666	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	667	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	668	| ((UV)dec->cur[-1]);
471		669	}
472	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
473	WANT (9);	672	WANT (8);
474	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
475	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	680	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	681	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	682	| (((UV)dec->cur[-5]) << 32)
		683	#endif
479	| (((UV)dec->cur[-4]) << 24)	684	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	685	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	686	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	687	| ((UV)dec->cur[-1]);
483		688	}
484	default:	689	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		691
488	fail:	692	fail:
489	return 0;	693	return 0;
490	}	694	}
491		695
…		…
496	{	700	{
497	AV *av = newAV ();	701	AV *av = newAV ();
498		702
499	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
500		704
501	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	706	{
503	++dec->cur;	707	++dec->cur;
504		708
505	for (;;)	709	for (;;)
506	{	710	{
507	WANT (1);	711	WANT (1);
508		712
509	if (*dec->cur == (0xe0 | 31))	713	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	714	{
511	++dec->cur;	715	++dec->cur;
512	break;	716	break;
513	}	717	}
514		718
…		…
517	}	721	}
518	else	722	else
519	{	723	{
520	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
521		725
		726	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);	727	av_fill (av, len - 1);
523		728
524	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
526	}	731	}
…		…
532	SvREFCNT_dec (av);	737	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	738	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	739	return &PL_sv_undef;
535	}	740	}
536		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	dec->cur += len;
		755
		756	hv_store (hv, key, len, decode_sv (dec), 0);
		757
		758	return;
		759	}
		760	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		761	{
		762	I32 len = decode_uint (dec);
		763	char *key = (char *)dec->cur;
		764
		765	dec->cur += len;
		766
		767	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		768	if (!is_utf8_string (key, len))
		769	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		770
		771	hv_store (hv, key, -len, decode_sv (dec), 0);
		772
		773	return;
		774	}
		775
		776	SV *k = decode_sv (dec);
		777	SV *v = decode_sv (dec);
		778
		779	hv_store_ent (hv, k, v, 0);
		780	SvREFCNT_dec (k);
		781
		782	fail:
		783	;
		784	}
		785
537	static SV *	786	static SV *
538	decode_hv (dec_t *dec)	787	decode_hv (dec_t *dec)
539	{	788	{
540	HV *hv = newHV ();	789	HV *hv = newHV ();
541		790
542	DEC_INC_DEPTH;	791	DEC_INC_DEPTH;
543		792
544	if ((*dec->cur & 31) == 31)	793	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	794	{
546	++dec->cur;	795	++dec->cur;
547		796
548	for (;;)	797	for (;;)
549	{	798	{
550	WANT (1);	799	WANT (1);
551		800
552	if (*dec->cur == (0xe0 | 31))	801	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	802	{
554	++dec->cur;	803	++dec->cur;
555	break;	804	break;
556	}	805	}
557		806
558	SV *k = decode_sv (dec);	807	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	808	}
563	}	809	}
564	else	810	else
565	{	811	{
566	int len = decode_uint (dec);	812	int pairs = decode_uint (dec);
567		813
568	while (len--)	814	while (pairs--)
569	{	815	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	}	816	}
576		817
577	DEC_DEC_DEPTH;	818	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	819	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		820
735	fail:	821	fail:
736	SvREFCNT_dec (hv);	822	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	824	return &PL_sv_undef;
739	}	825	}
740		826
741	static SV *	827	static SV *
742	decode_str (dec_t *dec, int utf8)	828	decode_str (dec_t *dec, int utf8)
743	{	829	{
744	SV *sv;	830	SV *sv = 0;
745		831
746	if ((*dec->cur & 31) == 31)	832	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	833	{
		834	// indefinite length strings
748	++dec->cur;	835	++dec->cur;
749		836
		837	U8 major = *dec->cur & MAJOR_MISC;
		838
750	sv = newSVpvn ("", 0);	839	sv = newSVpvn ("", 0);
751		840
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	841	for (;;)
754	{	842	{
755	WANT (1);	843	WANT (1);
756		844
757	if (*dec->cur == (0xe0 | 31))	845	if ((*dec->cur - major) > LENGTH_EXT8)
		846	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	847	{
759	++dec->cur;	848	++dec->cur;
760	break;	849	break;
761	}	850	}
		851	else
		852	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		853
763	SV *sv2 = decode_sv (dec);	854	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	855
		856	WANT (len);
		857	sv_catpvn (sv, dec->cur, len);
		858	dec->cur += len;
765	}	859	}
766	}	860	}
767	else	861	else
768	{	862	{
769	STRLEN len = decode_uint (dec);	863	STRLEN len = decode_uint (dec);
770		864
771	WANT (len);	865	WANT (len);
772	sv = newSVpvn (dec->cur, len);	866	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	867	dec->cur += len;
		868
		869	if (ecb_expect_false (dec->stringref)
		870	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		871	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	872	}
775		873
776	if (utf8)	874	if (utf8)
		875	{
		876	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		877	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		878	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		879
777	SvUTF8_on (sv);	880	SvUTF8_on (sv);
		881	}
778		882
779	return sv;	883	return sv;
780		884
781	fail:	885	fail:
		886	SvREFCNT_dec (sv);
		887	return &PL_sv_undef;
		888	}
		889
		890	static SV *
		891	decode_tagged (dec_t *dec)
		892	{
		893	SV *sv = 0;
		894	UV tag = decode_uint (dec);
		895
		896	WANT (1);
		897
		898	switch (tag)
		899	{
		900	case CBOR_TAG_MAGIC:
		901	sv = decode_sv (dec);
		902	break;
		903
		904	case CBOR_TAG_INDIRECTION:
		905	sv = newRV_noinc (decode_sv (dec));
		906	break;
		907
		908	case CBOR_TAG_STRINGREF_NAMESPACE:
		909	{
		910	ENTER; SAVETMPS;
		911
		912	SAVESPTR (dec->stringref);
		913	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		914
		915	sv = decode_sv (dec);
		916
		917	FREETMPS; LEAVE;
		918	}
		919	break;
		920
		921	case CBOR_TAG_STRINGREF:
		922	{
		923	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		924	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		925
		926	UV idx = decode_uint (dec);
		927
		928	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		929	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		930
		931	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		932	}
		933	break;
		934
		935	case CBOR_TAG_VALUE_SHAREABLE:
		936	{
		937	if (ecb_expect_false (!dec->shareable))
		938	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		939
		940	if (dec->cbor.flags & F_ALLOW_CYCLES)
		941	{
		942	sv = newSV (0);
		943	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		944
		945	SV *osv = decode_sv (dec);
		946	sv_setsv (sv, osv);
		947	SvREFCNT_dec_NN (osv);
		948	}
		949	else
		950	{
		951	av_push (dec->shareable, &PL_sv_undef);
		952	int idx = AvFILLp (dec->shareable);
		953	sv = decode_sv (dec);
		954	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		955	}
		956	}
		957	break;
		958
		959	case CBOR_TAG_VALUE_SHAREDREF:
		960	{
		961	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		962	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		963
		964	UV idx = decode_uint (dec);
		965
		966	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		967	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		968
		969	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		970
		971	if (sv == &PL_sv_undef)
		972	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		973	}
		974	break;
		975
		976	case CBOR_TAG_PERL_OBJECT:
		977	{
		978	sv = decode_sv (dec);
		979
		980	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		981	ERR ("corrupted CBOR data (non-array perl object)");
		982
		983	AV *av = (AV *)SvRV (sv);
		984	int len = av_len (av) + 1;
		985	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		986
		987	if (!stash)
		988	ERR ("cannot decode perl-object (package does not exist)");
		989
		990	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		991
		992	if (!method)
		993	ERR ("cannot decode perl-object (package does not have a THAW method)");
		994
		995	dSP;
		996
		997	ENTER; SAVETMPS; PUSHMARK (SP);
		998	EXTEND (SP, len + 1);
		999	// we re-bless the reference to get overload and other niceties right
		1000	PUSHs (*av_fetch (av, 0, 1));
		1001	PUSHs (sv_cbor);
		1002
		1003	int i;
		1004
		1005	for (i = 1; i < len; ++i)
		1006	PUSHs (*av_fetch (av, i, 1));
		1007
		1008	PUTBACK;
		1009	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1010	SPAGAIN;
		1011
		1012	if (SvTRUE (ERRSV))
		1013	{
		1014	FREETMPS; LEAVE;
		1015	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1016	}
		1017
		1018	SvREFCNT_dec (sv);
		1019	sv = SvREFCNT_inc (POPs);
		1020
		1021	PUTBACK;
		1022
		1023	FREETMPS; LEAVE;
		1024	}
		1025	break;
		1026
		1027	default:
		1028	{
		1029	sv = decode_sv (dec);
		1030
		1031	dSP;
		1032	ENTER; SAVETMPS; PUSHMARK (SP);
		1033	EXTEND (SP, 2);
		1034	PUSHs (newSVuv (tag));
		1035	PUSHs (sv);
		1036
		1037	PUTBACK;
		1038	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1039	SPAGAIN;
		1040
		1041	if (SvTRUE (ERRSV))
		1042	{
		1043	FREETMPS; LEAVE;
		1044	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1045	}
		1046
		1047	if (count)
		1048	{
		1049	SvREFCNT_dec (sv);
		1050	sv = SvREFCNT_inc (POPs);
		1051	}
		1052	else
		1053	{
		1054	AV *av = newAV ();
		1055	av_push (av, newSVuv (tag));
		1056	av_push (av, sv);
		1057
		1058	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1059	? cbor_tagged_stash
		1060	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1061	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1062	}
		1063
		1064	PUTBACK;
		1065
		1066	FREETMPS; LEAVE;
		1067	}
		1068	break;
		1069	}
		1070
		1071	return sv;
		1072
		1073	fail:
		1074	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1075	return &PL_sv_undef;
783	}	1076	}
784		1077
785	static SV *	1078	static SV *
786	decode_sv (dec_t *dec)	1079	decode_sv (dec_t *dec)
787	{	1080	{
788	WANT (1);	1081	WANT (1);
789		1082
790	switch (*dec->cur >> 5)	1083	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1084	{
792	case 0: // unsigned int	1085	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1086	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1087	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1088	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1089	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1090	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1091	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1092
800	return decode_str (dec, 1);	1093	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)	1094	switch (*dec->cur++ & MINOR_MASK)
810	{	1095	{
811	case 20:	1096	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1097	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1098	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1099	#endif
815	return newSVsv (cbor_false);	1100	return newSVsv (types_false);
816	case 21:	1101	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1102	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1103	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1104	#endif
820	return newSVsv (cbor_true);	1105	return newSVsv (types_true);
821	case 22:	1106	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1107	return newSVsv (&PL_sv_undef);
		1108	case SIMPLE_UNDEF:
		1109	#if CBOR_SLOW
		1110	types_error = get_bool ("Types::Serialiser::error");
		1111	#endif
		1112	return newSVsv (types_error);
823		1113
824	case 25:	1114	case MISC_FLOAT16:
825	{	1115	{
826	WANT (2);	1116	WANT (2);
827		1117
828	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1118	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
829	dec->cur += 2;	1119	dec->cur += 2;
830		1120
831	return newSVnv (ecb_binary16_to_float (fp));	1121	return newSVnv (ecb_binary16_to_float (fp));
832	}	1122	}
833		1123
834	case 26:	1124	case MISC_FLOAT32:
835	{	1125	{
836	uint32_t fp;	1126	uint32_t fp;
837	WANT (4);	1127	WANT (4);
838	memcpy (&fp, dec->cur, 4);	1128	memcpy (&fp, dec->cur, 4);
839	dec->cur += 4;	1129	dec->cur += 4;
…		…
842	fp = ecb_bswap32 (fp);	1132	fp = ecb_bswap32 (fp);
843		1133
844	return newSVnv (ecb_binary32_to_float (fp));	1134	return newSVnv (ecb_binary32_to_float (fp));
845	}	1135	}
846		1136
847	case 27:	1137	case MISC_FLOAT64:
848	{	1138	{
849	uint64_t fp;	1139	uint64_t fp;
850	WANT (8);	1140	WANT (8);
851	memcpy (&fp, dec->cur, 8);	1141	memcpy (&fp, dec->cur, 8);
852	dec->cur += 8;	1142	dec->cur += 8;
…		…
855	fp = ecb_bswap64 (fp);	1145	fp = ecb_bswap64 (fp);
856		1146
857	return newSVnv (ecb_binary64_to_double (fp));	1147	return newSVnv (ecb_binary64_to_double (fp));
858	}	1148	}
859		1149
860	// 0..19 unassigned	1150	// 0..19 unassigned simple
861	// 24 reserved + unassigned (reserved values are not encodable)	1151	// 24 reserved + unassigned simple (reserved values are not encodable)
		1152	// 28-30 unassigned misc
		1153	// 31 break code
862	default:	1154	default:
863	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1155	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
864	}	1156	}
865		1157
866	break;	1158	break;
867	}	1159	}
868	#if 0
869	switch (*dec->cur)
870	{
871	//case '"': ++dec->cur; return decode_str (dec);
872	case '[': ++dec->cur; return decode_av (dec);
873	case '{': ++dec->cur; return decode_hv (dec);
874
875	case '-':
876	case '0': case '1': case '2': case '3': case '4':
877	case '5': case '6': case '7': case '8': case '9':
878	//TODO return decode_num (dec);
879
880	case 't':
881	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
882	{
883	dec->cur += 4;
884	#if CBOR_SLOW
885	cbor_true = get_bool ("CBOR::XS::true");
886	#endif
887	return newSVsv (cbor_true);
888	}
889	else
890	ERR ("'true' expected");
891
892	break;
893
894	case 'f':
895	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
896	{
897	dec->cur += 5;
898	#if CBOR_SLOW
899	cbor_false = get_bool ("CBOR::XS::false");
900	#endif
901	return newSVsv (cbor_false);
902	}
903	else
904	ERR ("'false' expected");
905
906	break;
907
908	case 'n':
909	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
910	{
911	dec->cur += 4;
912	return newSVsv (&PL_sv_undef);
913	}
914	else
915	ERR ("'null' expected");
916
917	break;
918
919	default:
920	ERR ("malformed CBOR string, neither array, object, number, string or atom");
921	break;
922	}
923	#endif
924		1160
925	fail:	1161	fail:
926	return &PL_sv_undef;	1162	return &PL_sv_undef;
927	}	1163	}
928		1164
929	static SV *	1165	static SV *
930	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1166	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
931	{	1167	{
932	dec_t dec;	1168	dec_t dec = { };
933	SV *sv;	1169	SV *sv;
		1170	STRLEN len;
		1171	char *data = SvPVbyte (string, len);
934		1172
935	/* work around bugs in 5.10 where manipulating magic values
936	* makes perl ignore the magic in subsequent accesses.
937	* also make a copy of non-PV values, to get them into a clean
938	* state (SvPV should do that, but it's buggy, see below).
939	*/
940	/*SvGETMAGIC (string);*/
941	if (SvMAGICAL (string) || !SvPOK (string))
942	string = sv_2mortal (newSVsv (string));
943
944	SvUPGRADE (string, SVt_PV);
945
946	/* work around a bug in perl 5.10, which causes SvCUR to fail an
947	* assertion with -DDEBUGGING, although SvCUR is documented to
948	* return the xpv_cur field which certainly exists after upgrading.
949	* according to nicholas clark, calling SvPOK fixes this.
950	* But it doesn't fix it, so try another workaround, call SvPV_nolen
951	* and hope for the best.
952	* Damnit, SvPV_nolen still trips over yet another assertion. This
953	* assertion business is seriously broken, try yet another workaround
954	* for the broken -DDEBUGGING.
955	*/
956	{
957	#ifdef DEBUGGING
958	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
959	#else
960	STRLEN offset = SvCUR (string);
961	#endif
962
963	if (offset > cbor->max_size && cbor->max_size)	1173	if (len > cbor->max_size && cbor->max_size)
964	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1174	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
965	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1175	(unsigned long)len, (unsigned long)cbor->max_size);
966	}
967
968	sv_utf8_downgrade (string, 0);
969		1176
970	dec.cbor = *cbor;	1177	dec.cbor = *cbor;
971	dec.cur = (U8 *)SvPVX (string);	1178	dec.cur = (U8 *)data;
972	dec.end = (U8 *)SvEND (string);	1179	dec.end = (U8 *)data + len;
973	dec.err = 0;
974	dec.depth = 0;
975
976	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
977	;//TODO dec.cbor.flags |= F_HOOK;
978		1180
979	sv = decode_sv (&dec);	1181	sv = decode_sv (&dec);
980		1182
981	if (offset_return)	1183	if (offset_return)
982	*offset_return = dec.cur;	1184	*offset_return = dec.cur;
…		…
985	if (dec.cur != dec.end && !dec.err)	1187	if (dec.cur != dec.end && !dec.err)
986	dec.err = "garbage after CBOR object";	1188	dec.err = "garbage after CBOR object";
987		1189
988	if (dec.err)	1190	if (dec.err)
989	{	1191	{
		1192	if (dec.shareable)
		1193	{
		1194	// need to break cyclic links, which whould all be in shareable
		1195	int i;
		1196	SV **svp;
		1197
		1198	for (i = av_len (dec.shareable) + 1; i--; )
		1199	if ((svp = av_fetch (dec.shareable, i, 0)))
		1200	sv_setsv (*svp, &PL_sv_undef);
		1201	}
		1202
990	SvREFCNT_dec (sv);	1203	SvREFCNT_dec (sv);
991	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1204	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
992	}	1205	}
993		1206
994	sv = sv_2mortal (sv);	1207	sv = sv_2mortal (sv);
995		1208
996	return sv;	1209	return sv;
997	}	1210	}
998		1211
		1212	/////////////////////////////////////////////////////////////////////////////
		1213	// incremental parser
		1214
		1215	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1216
		1217	// returns 0 for notyet, 1 for success or error
		1218	static int
		1219	incr_parse (CBOR *self, SV *cborstr)
		1220	{
		1221	STRLEN cur;
		1222	SvPV (cborstr, cur);
		1223
		1224	while (ecb_expect_true (self->incr_need <= cur))
		1225	{
		1226	// table of integer count bytes
		1227	static I8 incr_len[MINOR_MASK + 1] = {
		1228	0, 0, 0, 0, 0, 0, 0, 0,
		1229	0, 0, 0, 0, 0, 0, 0, 0,
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	1, 2, 4, 8,-1,-1,-1,-2
		1232	};
		1233
		1234	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1235	U8 m = *p & MINOR_MASK;
		1236	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1237	I8 ilen = incr_len[m];
		1238
		1239	self->incr_need = self->incr_pos + 1;
		1240
		1241	if (ecb_expect_false (ilen < 0))
		1242	{
		1243	if (m != MINOR_INDEF)
		1244	return 1; // error
		1245
		1246	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1247	{
		1248	if (count >= 0)
		1249	return 1; // error
		1250
		1251	count = 1;
		1252	}
		1253	else
		1254	{
		1255	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1256	count = -1;
		1257	}
		1258	}
		1259	else
		1260	{
		1261	self->incr_need += ilen;
		1262	if (ecb_expect_false (self->incr_need > cur))
		1263	return 0;
		1264
		1265	int major = *p >> MAJOR_SHIFT;
		1266
		1267	switch (major)
		1268	{
		1269	case MAJOR_TAG >> MAJOR_SHIFT:
		1270	++count; // tags merely prefix another value
		1271	break;
		1272
		1273	case MAJOR_BYTES >> MAJOR_SHIFT:
		1274	case MAJOR_TEXT >> MAJOR_SHIFT:
		1275	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1276	case MAJOR_MAP >> MAJOR_SHIFT:
		1277	{
		1278	UV len;
		1279
		1280	if (ecb_expect_false (ilen))
		1281	{
		1282	len = 0;
		1283
		1284	do {
		1285	len = (len << 8) | *++p;
		1286	} while (--ilen);
		1287	}
		1288	else
		1289	len = m;
		1290
		1291	switch (major)
		1292	{
		1293	case MAJOR_BYTES >> MAJOR_SHIFT:
		1294	case MAJOR_TEXT >> MAJOR_SHIFT:
		1295	self->incr_need += len;
		1296	if (ecb_expect_false (self->incr_need > cur))
		1297	return 0;
		1298
		1299	break;
		1300
		1301	case MAJOR_MAP >> MAJOR_SHIFT:
		1302	len <<= 1;
		1303	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1304	if (len)
		1305	{
		1306	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1307	count = len + 1;
		1308	}
		1309	break;
		1310	}
		1311	}
		1312	}
		1313	}
		1314
		1315	self->incr_pos = self->incr_need;
		1316
		1317	if (count > 0)
		1318	{
		1319	while (!--count)
		1320	{
		1321	if (!AvFILLp (self->incr_count))
		1322	return 1; // done
		1323
		1324	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1325	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1326	}
		1327
		1328	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1329	}
		1330	}
		1331
		1332	return 0;
		1333	}
		1334
		1335
999	/////////////////////////////////////////////////////////////////////////////	1336	/////////////////////////////////////////////////////////////////////////////
1000	// XS interface functions	1337	// XS interface functions
1001		1338
1002	MODULE = CBOR::XS PACKAGE = CBOR::XS	1339	MODULE = CBOR::XS PACKAGE = CBOR::XS
1003		1340
1004	BOOT:	1341	BOOT:
1005	{	1342	{
1006	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1343	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1007	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1344	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1008		1345
1009	cbor_true = get_bool ("CBOR::XS::true");	1346	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1010	cbor_false = get_bool ("CBOR::XS::false");	1347	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1348
		1349	types_true = get_bool ("Types::Serialiser::true" );
		1350	types_false = get_bool ("Types::Serialiser::false");
		1351	types_error = get_bool ("Types::Serialiser::error");
		1352
		1353	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1354
		1355	sv_cbor = newSVpv ("CBOR", 0);
		1356	SvREADONLY_on (sv_cbor);
1011	}	1357	}
1012		1358
1013	PROTOTYPES: DISABLE	1359	PROTOTYPES: DISABLE
1014		1360
1015	void CLONE (...)	1361	void CLONE (...)
1016	CODE:	1362	CODE:
1017	cbor_stash = 0;	1363	cbor_stash = 0;
		1364	cbor_tagged_stash = 0;
		1365	types_error_stash = 0;
1018	cbor_boolean_stash = 0;	1366	types_boolean_stash = 0;
1019		1367
1020	void new (char *klass)	1368	void new (char *klass)
1021	PPCODE:	1369	PPCODE:
1022	{	1370	{
1023	SV *pv = NEWSV (0, sizeof (CBOR));	1371	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1031		1379
1032	void shrink (CBOR *self, int enable = 1)	1380	void shrink (CBOR *self, int enable = 1)
1033	ALIAS:	1381	ALIAS:
1034	shrink = F_SHRINK	1382	shrink = F_SHRINK
1035	allow_unknown = F_ALLOW_UNKNOWN	1383	allow_unknown = F_ALLOW_UNKNOWN
		1384	allow_sharing = F_ALLOW_SHARING
		1385	allow_cycles = F_ALLOW_CYCLES
		1386	pack_strings = F_PACK_STRINGS
		1387	validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1388	PPCODE:
1037	{	1389	{
1038	if (enable)	1390	if (enable)
1039	self->flags |= ix;	1391	self->flags |= ix;
1040	else	1392	else
…		…
1045		1397
1046	void get_shrink (CBOR *self)	1398	void get_shrink (CBOR *self)
1047	ALIAS:	1399	ALIAS:
1048	get_shrink = F_SHRINK	1400	get_shrink = F_SHRINK
1049	get_allow_unknown = F_ALLOW_UNKNOWN	1401	get_allow_unknown = F_ALLOW_UNKNOWN
		1402	get_allow_sharing = F_ALLOW_SHARING
		1403	get_allow_cycles = F_ALLOW_CYCLES
		1404	get_pack_strings = F_PACK_STRINGS
		1405	get_validate_utf8 = F_VALIDATE_UTF8
1050	PPCODE:	1406	PPCODE:
1051	XPUSHs (boolSV (self->flags & ix));	1407	XPUSHs (boolSV (self->flags & ix));
1052		1408
1053	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1409	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1054	PPCODE:	1410	PPCODE:
…		…
1070	CODE:	1426	CODE:
1071	RETVAL = self->max_size;	1427	RETVAL = self->max_size;
1072	OUTPUT:	1428	OUTPUT:
1073	RETVAL	1429	RETVAL
1074		1430
1075	#if 0 //TODO	1431	void filter (CBOR *self, SV *filter = 0)
1076
1077	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1078	PPCODE:	1432	PPCODE:
1079	{
1080	SvREFCNT_dec (self->cb_object);	1433	SvREFCNT_dec (self->filter);
1081	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1434	self->filter = filter ? newSVsv (filter) : filter;
1082
1083	XPUSHs (ST (0));	1435	XPUSHs (ST (0));
1084	}
1085		1436
1086	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1437	SV *get_filter (CBOR *self)
1087	PPCODE:	1438	CODE:
1088	{	1439	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1089	if (!self->cb_sk_object)	1440	OUTPUT:
1090	self->cb_sk_object = newHV ();	1441	RETVAL
1091
1092	if (SvOK (cb))
1093	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1094	else
1095	{
1096	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1097
1098	if (!HvKEYS (self->cb_sk_object))
1099	{
1100	SvREFCNT_dec (self->cb_sk_object);
1101	self->cb_sk_object = 0;
1102	}
1103	}
1104
1105	XPUSHs (ST (0));
1106	}
1107
1108	#endif
1109		1442
1110	void encode (CBOR *self, SV *scalar)	1443	void encode (CBOR *self, SV *scalar)
1111	PPCODE:	1444	PPCODE:
1112	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1445	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1113	XPUSHs (scalar);	1446	XPUSHs (scalar);
…		…
1126	EXTEND (SP, 2);	1459	EXTEND (SP, 2);
1127	PUSHs (sv);	1460	PUSHs (sv);
1128	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1461	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1129	}	1462	}
1130		1463
		1464	void incr_parse (CBOR *self, SV *cborstr)
		1465	ALIAS:
		1466	incr_parse_multiple = 1
		1467	PPCODE:
		1468	{
		1469	if (SvUTF8 (cborstr))
		1470	sv_utf8_downgrade (cborstr, 0);
		1471
		1472	if (!self->incr_count)
		1473	{
		1474	self->incr_count = newAV ();
		1475	self->incr_pos = 0;
		1476	self->incr_need = 1;
		1477
		1478	av_push (self->incr_count, newSViv (1));
		1479	}
		1480
		1481	do
		1482	{
		1483	if (!incr_parse (self, cborstr))
		1484	{
		1485	if (self->incr_need > self->max_size && self->max_size)
		1486	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1487	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1488
		1489	break;
		1490	}
		1491
		1492	SV *sv;
		1493	char *offset;
		1494
		1495	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1496	XPUSHs (sv);
		1497
		1498	sv_chop (cborstr, offset);
		1499
		1500	av_clear (self->incr_count);
		1501	av_push (self->incr_count, newSViv (1));
		1502
		1503	self->incr_pos = 0;
		1504	self->incr_need = self->incr_pos + 1;
		1505	}
		1506	while (ix);
		1507	}
		1508
		1509	void incr_reset (CBOR *self)
		1510	CODE:
		1511	{
		1512	SvREFCNT_dec (self->incr_count);
		1513	self->incr_count = 0;
		1514	}
		1515
1131	void DESTROY (CBOR *self)	1516	void DESTROY (CBOR *self)
1132	CODE:	1517	PPCODE:
1133	SvREFCNT_dec (self->cb_sk_object);	1518	cbor_free (self);
1134	SvREFCNT_dec (self->cb_object);
1135		1519
1136	PROTOTYPES: ENABLE	1520	PROTOTYPES: ENABLE
1137		1521
1138	void encode_cbor (SV *scalar)	1522	void encode_cbor (SV *scalar)
		1523	ALIAS:
		1524	encode_cbor = 0
		1525	encode_cbor_sharing = F_ALLOW_SHARING
1139	PPCODE:	1526	PPCODE:
1140	{	1527	{
1141	CBOR cbor;	1528	CBOR cbor;
1142	cbor_init (&cbor);	1529	cbor_init (&cbor);
		1530	cbor.flags |= ix;
1143	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1531	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1144	XPUSHs (scalar);	1532	XPUSHs (scalar);
1145	}	1533	}
1146		1534
1147	void decode_cbor (SV *cborstr)	1535	void decode_cbor (SV *cborstr)

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