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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.49 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
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 = { 0 };
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	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
537	static SV *	788	static SV *
538	decode_hv (dec_t *dec)	789	decode_hv (dec_t *dec)
539	{	790	{
540	HV *hv = newHV ();	791	HV *hv = newHV ();
541		792
542	DEC_INC_DEPTH;	793	DEC_INC_DEPTH;
543		794
544	if ((*dec->cur & 31) == 31)	795	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	796	{
546	++dec->cur;	797	++dec->cur;
547		798
548	for (;;)	799	for (;;)
549	{	800	{
550	WANT (1);	801	WANT (1);
551		802
552	if (*dec->cur == 0xe0 | 31)	803	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	804	{
554	++dec->cur;	805	++dec->cur;
555	break;	806	break;
556	}	807	}
557		808
558	SV *k = decode_sv (dec);	809	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	810	}
563	}	811	}
564	else	812	else
565	{	813	{
566	int len = decode_uint (dec);	814	int pairs = decode_uint (dec);
567		815
568	while (len--)	816	while (pairs--)
569	{	817	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	}	818	}
576		819
577	DEC_DEC_DEPTH;	820	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	821	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		822
735	fail:	823	fail:
736	SvREFCNT_dec (hv);	824	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	825	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	826	return &PL_sv_undef;
739	}	827	}
740		828
741	static SV *	829	static SV *
742	decode_str (dec_t *dec, int utf8)	830	decode_str (dec_t *dec, int utf8)
743	{	831	{
744	SV *sv;	832	SV *sv = 0;
745		833
746	if ((*dec->cur & 31) == 31)	834	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	835	{
		836	// indefinite length strings
748	++dec->cur;	837	++dec->cur;
749		838
		839	U8 major = *dec->cur & MAJOR_MISC;
		840
750	sv = newSVpvn ("", 0);	841	sv = newSVpvn ("", 0);
751		842
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	843	for (;;)
754	{	844	{
755	WANT (1);	845	WANT (1);
756		846
757	if (*dec->cur == 0xe0 | 31)	847	if ((*dec->cur - major) > LENGTH_EXT8)
		848	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	849	{
759	++dec->cur;	850	++dec->cur;
760	break;	851	break;
761	}	852	}
		853	else
		854	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		855
763	SV *sv2 = decode_sv (dec);	856	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	857
		858	WANT (len);
		859	sv_catpvn (sv, dec->cur, len);
		860	dec->cur += len;
765	}	861	}
766	}	862	}
767	else	863	else
768	{	864	{
769	STRLEN len = decode_uint (dec);	865	STRLEN len = decode_uint (dec);
770		866
771	WANT (len);	867	WANT (len);
772	sv = newSVpvn (dec->cur, len);	868	sv = newSVpvn (dec->cur, len);
773	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));
774	}	874	}
775		875
776	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
777	SvUTF8_on (sv);	882	SvUTF8_on (sv);
		883	}
778		884
779	return sv;	885	return sv;
780		886
781	fail:	887	fail:
		888	SvREFCNT_dec (sv);
		889	return &PL_sv_undef;
		890	}
		891
		892	static SV *
		893	decode_tagged (dec_t *dec)
		894	{
		895	SV *sv = 0;
		896	UV tag = decode_uint (dec);
		897
		898	WANT (1);
		899
		900	switch (tag)
		901	{
		902	case CBOR_TAG_MAGIC:
		903	sv = decode_sv (dec);
		904	break;
		905
		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
		1073	return sv;
		1074
		1075	fail:
		1076	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1077	return &PL_sv_undef;
783	}	1078	}
784		1079
785	static SV *	1080	static SV *
786	decode_sv (dec_t *dec)	1081	decode_sv (dec_t *dec)
787	{	1082	{
788	WANT (1);	1083	WANT (1);
789		1084
790	switch (*dec->cur >> 5)	1085	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1086	{
792	case 0: // unsigned int	1087	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1088	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1089	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1090	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1091	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1092	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1093	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1094
800	return decode_str (dec, 1);	1095	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)	1096	switch (*dec->cur++ & MINOR_MASK)
810	{	1097	{
811	case 20:	1098	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1099	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1100	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1101	#endif
815	return newSVsv (cbor_false);	1102	return newSVsv (types_false);
816	case 21:	1103	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1104	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1105	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1106	#endif
820	return newSVsv (cbor_true);	1107	return newSVsv (types_true);
821	case 22:	1108	case SIMPLE_NULL:
822	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);
823		1115
824	case 25:	1116	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1117	{
		1118	WANT (2);
828		1119
		1120	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1121	dec->cur += 2;
		1122
		1123	return newSVnv (ecb_binary16_to_float (fp));
		1124	}
		1125
829	case 26:	1126	case MISC_FLOAT32:
830	{	1127	{
831	uint32_t fp;	1128	uint32_t fp;
832	WANT (4);	1129	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1130	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1131	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1134	fp = ecb_bswap32 (fp);
838		1135
839	return newSVnv (ecb_binary32_to_float (fp));	1136	return newSVnv (ecb_binary32_to_float (fp));
840	}	1137	}
841		1138
842	case 27:	1139	case MISC_FLOAT64:
843	{	1140	{
844	uint64_t fp;	1141	uint64_t fp;
845	WANT (8);	1142	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1143	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1144	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1147	fp = ecb_bswap64 (fp);
851		1148
852	return newSVnv (ecb_binary64_to_double (fp));	1149	return newSVnv (ecb_binary64_to_double (fp));
853	}	1150	}
854		1151
855	// 0..19 unassigned	1152	// 0..19 unassigned simple
856	// 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
857	default:	1156	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1157	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1158	}
860		1159
861	break;	1160	break;
862	}	1161	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1162
920	fail:	1163	fail:
921	return &PL_sv_undef;	1164	return &PL_sv_undef;
922	}	1165	}
923		1166
924	static SV *	1167	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1168	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1169	{
927	dec_t dec;	1170	dec_t dec = { 0 };
928	SV *sv;	1171	SV *sv;
		1172	STRLEN len;
		1173	char *data = SvPVbyte (string, len);
929		1174
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1175	if (len > cbor->max_size && cbor->max_size)
959	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1176	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1177	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1178
965	dec.cbor = *cbor;	1179	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1180	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1181	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1182
974	sv = decode_sv (&dec);	1183	sv = decode_sv (&dec);
975		1184
976	if (offset_return)	1185	if (offset_return)
977	*offset_return = dec.cur;	1186	*offset_return = dec.cur;
978		1187
979	if (!(offset_return || !sv))	1188	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1189	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1190	dec.err = "garbage after CBOR object";
		1191
		1192	if (dec.err)
		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
984	SvREFCNT_dec (sv);	1205	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988
989	if (!sv)
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1206	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
		1207	}
991		1208
992	sv = sv_2mortal (sv);	1209	sv = sv_2mortal (sv);
993		1210
994	return sv;	1211	return sv;
995	}	1212	}
996		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
997	/////////////////////////////////////////////////////////////////////////////	1338	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1339	// XS interface functions
999		1340
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1341	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1342
1002	BOOT:	1343	BOOT:
1003	{	1344	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1345	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1346	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1347
1007	cbor_true = get_bool ("CBOR::XS::true");	1348	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	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);
1009	}	1359	}
1010		1360
1011	PROTOTYPES: DISABLE	1361	PROTOTYPES: DISABLE
1012		1362
1013	void CLONE (...)	1363	void CLONE (...)
1014	CODE:	1364	CODE:
1015	cbor_stash = 0;	1365	cbor_stash = 0;
		1366	cbor_tagged_stash = 0;
		1367	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1368	types_boolean_stash = 0;
1017		1369
1018	void new (char *klass)	1370	void new (char *klass)
1019	PPCODE:	1371	PPCODE:
1020	{	1372	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1373	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1381
1030	void shrink (CBOR *self, int enable = 1)	1382	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1383	ALIAS:
1032	shrink = F_SHRINK	1384	shrink = F_SHRINK
1033	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
1034	PPCODE:	1390	PPCODE:
1035	{	1391	{
1036	if (enable)	1392	if (enable)
1037	self->flags |= ix;	1393	self->flags |= ix;
1038	else	1394	else
…		…
1043		1399
1044	void get_shrink (CBOR *self)	1400	void get_shrink (CBOR *self)
1045	ALIAS:	1401	ALIAS:
1046	get_shrink = F_SHRINK	1402	get_shrink = F_SHRINK
1047	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
1048	PPCODE:	1408	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1409	XPUSHs (boolSV (self->flags & ix));
1050		1410
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1411	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1412	PPCODE:
…		…
1068	CODE:	1428	CODE:
1069	RETVAL = self->max_size;	1429	RETVAL = self->max_size;
1070	OUTPUT:	1430	OUTPUT:
1071	RETVAL	1431	RETVAL
1072		1432
1073	#if 0 //TODO	1433	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1434	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1435	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1436	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1437	XPUSHs (ST (0));
1082	}
1083		1438
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1439	SV *get_filter (CBOR *self)
1085	PPCODE:	1440	CODE:
1086	{	1441	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1442	OUTPUT:
1088	self->cb_sk_object = newHV ();	1443	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1444
1108	void encode (CBOR *self, SV *scalar)	1445	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1446	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1447	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1448	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1461	EXTEND (SP, 2);
1125	PUSHs (sv);	1462	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1463	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1464	}
1128		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
1129	void DESTROY (CBOR *self)	1518	void DESTROY (CBOR *self)
1130	CODE:	1519	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1520	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1521
1134	PROTOTYPES: ENABLE	1522	PROTOTYPES: ENABLE
1135		1523
1136	void encode_cbor (SV *scalar)	1524	void encode_cbor (SV *scalar)
		1525	ALIAS:
		1526	encode_cbor = 0
		1527	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1528	PPCODE:
1138	{	1529	{
1139	CBOR cbor;	1530	CBOR cbor;
1140	cbor_init (&cbor);	1531	cbor_init (&cbor);
		1532	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1533	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1534	XPUSHs (scalar);
1143	}	1535	}
1144		1536
1145	void decode_cbor (SV *cborstr)	1537	void decode_cbor (SV *cborstr)

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