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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.14 by root, Tue Oct 29 15:56:32 2013 UTC vs.
Revision 1.50 by root, Thu Feb 25 02:29:22 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	CBOR_TAG_GENERIC_OBJECT = 257,	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
31		77
32	// rfc7049	78	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
39		85
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		90
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		96
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	98	};
53		99
54	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
55	#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
56		106
57	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
58		108
59	#define SB do {	109	#define SB do {
60	#define SE } while (0)	110	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
74	#endif	124	#endif
75		125
76	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		128
79	typedef struct {	129	typedef struct {
80	U32 flags;	130	U32 flags;
81	U32 max_depth;	131	U32 max_depth;
82	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
		134
		135	// for the incremental parser
		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.
83	} CBOR;	139	} CBOR;
84		140
85	ecb_inline void	141	ecb_inline void
86	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
87	{	143	{
88	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
89	cbor->max_depth = 512;	145	cbor->max_depth = 512;
		146	}
		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
90	}	153	}
91		154
92	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	156	// utility functions
94		157
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	180	#endif
118	}	181	}
119	}	182	}
120		183
121	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
122	// fp hell	185	ecb_inline int
123		186	minimum_string_length (UV idx)
124	//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	}
125		198
126	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
127	// encoder	200	// encoder
128		201
129	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
134	SV *sv; // result scalar	207	SV *sv; // result scalar
135	CBOR cbor;	208	CBOR cbor;
136	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;
137	} enc_t;	214	} enc_t;
138		215
139	ecb_inline void	216	ecb_inline void
140	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
141	{	218	{
…		…
158	static void	235	static void
159	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
160	{	237	{
161	need (enc, 9);	238	need (enc, 9);
162		239
163	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
165	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
166	{	243	{
167	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	245	*enc->cur++ = len;
169	}	246	}
170	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
171	{	248	{
172	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	251	*enc->cur++ = len;
175	}	252	}
176	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
177	{	254	{
178	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	259	*enc->cur++ = len;
183	}	260	}
184	else	261	else
185	{	262	{
186	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	271	*enc->cur++ = len;
195	}	272	}
196	}	273	}
197		274
198	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
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	283	{
201	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
202	need (enc, len);	285	need (enc, len);
203	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
204	enc->cur += len;	287	enc->cur += len;
205	}	288	}
206		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
207	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
208		316
209	static void	317	static void
210	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
211	{	319	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
216		324
217	++enc->depth;	325	++enc->depth;
218		326
219	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		328
		329	if (SvMAGICAL (av))
221	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
222	{	331	{
223	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		341
227	--enc->depth;	342	--enc->depth;
228	}	343	}
229		344
230	static void	345	static void
…		…
239		354
240	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
242		357
243	if (mg)	358	if (mg)
244	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	360	else
246	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
247		362
248	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
249	{	364	{
250	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
252	else	367	else
253	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
254		369
255	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	370	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
256	}	371	}
257		372
258	if (mg)	373	if (mg)
259	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		375
261	--enc->depth;	376	--enc->depth;
262	}	377	}
263		378
264	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
265	static void	380	static void
266	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
267	{	382	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
271	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
272		386
273	if (ecb_expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
274	{	388	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	390	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	395	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	396	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		398
285	HV *stash = SvSTASH (sv);	399	HV *stash = SvSTASH (sv);
286	GV *method;
287		400
288	if (stash == boolean_stash)	401	if (stash == boolean_stash)
289	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	402	{
		403	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		404	return;
		405	}
290	else if (stash == error_stash)	406	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	407	{
		408	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		409	return;
		410	}
292	else if (stash == tagged_stash)	411	else if (stash == tagged_stash)
293	{	412	{
294	if (svt != SVt_PVAV)	413	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	414	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		415
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	416	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	encode_sv (enc, *av_fetch ((AV *)sv, 1, 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))
299	}	432	{
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		434	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		435	return;
		436	}
		437	else
		438	{
		439	sv_setuv (*svp, enc->shareable_idx);
		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
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	450	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	451	{
302	dSP;	452	dSP;
303		453
304	ENTER; SAVETMPS; PUSHMARK (SP);	454	ENTER; SAVETMPS;
		455	PUSHMARK (SP);
305	// we re-bless the reference to get overload and other niceties right	456	// we re-bless the reference to get overload and other niceties right
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	457	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		458
308	PUTBACK;	459	PUTBACK;
309	// G_SCALAR ensures that return value is 1	460	// G_SCALAR ensures that return value is 1
…		…
322	}	473	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	474	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	475	{
325	dSP;	476	dSP;
326		477
327	ENTER; SAVETMPS; PUSHMARK (SP);	478	ENTER; SAVETMPS;
		479	SAVESTACK_POS ();
		480	PUSHMARK (SP);
328	EXTEND (SP, 2);	481	EXTEND (SP, 2);
329	// we re-bless the reference to get overload and other niceties right	482	// we re-bless the reference to get overload and other niceties right
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	483	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	484	PUSHs (sv_cbor);
332		485
…		…
336		489
337	// catch this surprisingly common error	490	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	491	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	492	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		493
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	494	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	495	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	496	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		497
345	while (count)	498	while (count)
346	encode_sv (enc, SP[1 - count--]);	499	encode_sv (enc, SP[1 - count--]);
347		500
348	PUTBACK;	501	PUTBACK;
…		…
355	}	508	}
356	else if (svt == SVt_PVHV)	509	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	510	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	511	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	512	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	513	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	514	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	515	encode_tag (enc, CBOR_TAG_INDIRECTION);
		516	encode_sv (enc, sv);
		517	}
380	}	518	}
381		519
382	static void	520	static void
383	encode_nv (enc_t *enc, SV *sv)	521	encode_nv (enc_t *enc, SV *sv)
384	{	522	{
385	double nv = SvNVX (sv);	523	double nv = SvNVX (sv);
386		524
387	need (enc, 9);	525	need (enc, 9);
388		526
389	if (ecb_expect_false (nv == (U32)nv))	527	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	528	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	529	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	530	else if (ecb_expect_false (nv == (float)nv))
393	{	531	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	532	uint32_t fp = ecb_float_to_binary32 (nv);
395		533
396	*enc->cur++ = 0xe0 | 26;	534	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
397		535
398	if (!ecb_big_endian ())	536	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	537	fp = ecb_bswap32 (fp);
400		538
401	memcpy (enc->cur, &fp, 4);	539	memcpy (enc->cur, &fp, 4);
…		…
403	}	541	}
404	else	542	else
405	{	543	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	544	uint64_t fp = ecb_double_to_binary64 (nv);
407		545
408	*enc->cur++ = 0xe0 | 27;	546	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
409		547
410	if (!ecb_big_endian ())	548	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	549	fp = ecb_bswap64 (fp);
412		550
413	memcpy (enc->cur, &fp, 8);	551	memcpy (enc->cur, &fp, 8);
…		…
422		560
423	if (SvPOKp (sv))	561	if (SvPOKp (sv))
424	{	562	{
425	STRLEN len;	563	STRLEN len;
426	char *str = SvPV (sv, len);	564	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	565	encode_strref (enc, SvUTF8 (sv), str, len);
428	}	566	}
429	else if (SvNOKp (sv))	567	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	568	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	569	else if (SvIOKp (sv))
432	{	570	{
433	if (SvIsUV (sv))	571	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	572	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	573	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	574	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	575	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	576	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	577	}
440	else if (SvROK (sv))	578	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	579	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	580	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	581	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	582	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	583	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	584	else
447	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	585	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	586	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	587	}
450		588
451	static SV *	589	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	590	encode_cbor (SV *scalar, CBOR *cbor)
453	{	591	{
454	enc_t enc;	592	enc_t enc = { 0 };
455		593
456	enc.cbor = *cbor;	594	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	595	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	596	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	597	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		598
462	SvPOK_only (enc.sv);	599	SvPOK_only (enc.sv);
		600
		601	if (cbor->flags & F_PACK_STRINGS)
		602	{
		603	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		604	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		605	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		606	}
		607
463	encode_sv (&enc, scalar);	608	encode_sv (&enc, scalar);
464		609
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	610	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	611	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
467		612
…		…
481	U8 *end; // end of input string	626	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	627	const char *err; // parse error, if != 0
483	CBOR cbor;	628	CBOR cbor;
484	U32 depth; // recursion depth	629	U32 depth; // recursion depth
485	U32 maxdepth; // recursion depth limit	630	U32 maxdepth; // recursion depth limit
		631	AV *shareable;
		632	AV *stringref;
		633	SV *decode_tagged;
486	} dec_t;	634	} dec_t;
487		635
488	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	636	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
489		637
490	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	638	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
493	#define DEC_DEC_DEPTH --dec->depth	641	#define DEC_DEC_DEPTH --dec->depth
494		642
495	static UV	643	static UV
496	decode_uint (dec_t *dec)	644	decode_uint (dec_t *dec)
497	{	645	{
498	switch (*dec->cur & 31)	646	U8 m = *dec->cur & MINOR_MASK;
499	{	647	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		648
505	case 24:	649	if (ecb_expect_true (m < LENGTH_EXT1))
		650	return m;
		651	else if (ecb_expect_true (m == LENGTH_EXT1))
		652	{
506	WANT (2);	653	WANT (1);
507	dec->cur += 2;	654	dec->cur += 1;
508	return dec->cur[-1];	655	return dec->cur[-1];
509		656	}
510	case 25:	657	else if (ecb_expect_true (m == LENGTH_EXT2))
		658	{
511	WANT (3);	659	WANT (2);
512	dec->cur += 3;	660	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	661	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	662	| ((UV)dec->cur[-1]);
515		663	}
516	case 26:	664	else if (ecb_expect_true (m == LENGTH_EXT4))
		665	{
517	WANT (5);	666	WANT (4);
518	dec->cur += 5;	667	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	668	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	669	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	670	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	671	| ((UV)dec->cur[-1]);
523		672	}
524	case 27:	673	else if (ecb_expect_true (m == LENGTH_EXT8))
		674	{
525	WANT (9);	675	WANT (8);
526	dec->cur += 9;	676	dec->cur += 8;
		677
		678	return
		679	#if UVSIZE < 8
		680	0
		681	#else
527	return (((UV)dec->cur[-8]) << 56)	682	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	683	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	684	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	685	| (((UV)dec->cur[-5]) << 32)
		686	#endif
531	| (((UV)dec->cur[-4]) << 24)	687	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	688	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	689	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	690	| ((UV)dec->cur[-1]);
535		691	}
536	default:	692	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	693	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		694
540	fail:	695	fail:
541	return 0;	696	return 0;
542	}	697	}
543		698
…		…
548	{	703	{
549	AV *av = newAV ();	704	AV *av = newAV ();
550		705
551	DEC_INC_DEPTH;	706	DEC_INC_DEPTH;
552		707
553	if ((*dec->cur & 31) == 31)	708	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	709	{
555	++dec->cur;	710	++dec->cur;
556		711
557	for (;;)	712	for (;;)
558	{	713	{
559	WANT (1);	714	WANT (1);
560		715
561	if (*dec->cur == (0xe0 | 31))	716	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
562	{	717	{
563	++dec->cur;	718	++dec->cur;
564	break;	719	break;
565	}	720	}
566		721
…		…
569	}	724	}
570	else	725	else
571	{	726	{
572	int i, len = decode_uint (dec);	727	int i, len = decode_uint (dec);
573		728
		729	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	730	av_fill (av, len - 1);
575		731
576	for (i = 0; i < len; ++i)	732	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	733	AvARRAY (av)[i] = decode_sv (dec);
578	}	734	}
…		…
584	SvREFCNT_dec (av);	740	SvREFCNT_dec (av);
585	DEC_DEC_DEPTH;	741	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	742	return &PL_sv_undef;
587	}	743	}
588		744
		745	static void
		746	decode_he (dec_t *dec, HV *hv)
		747	{
		748	// for speed reasons, we specialcase single-string
		749	// byte or utf-8 strings as keys, but only when !stringref
		750
		751	if (ecb_expect_true (!dec->stringref))
		752	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		753	{
		754	I32 len = decode_uint (dec);
		755	char *key = (char *)dec->cur;
		756
		757	WANT (len);
		758	dec->cur += len;
		759
		760	hv_store (hv, key, len, decode_sv (dec), 0);
		761
		762	return;
		763	}
		764	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		765	{
		766	I32 len = decode_uint (dec);
		767	char *key = (char *)dec->cur;
		768
		769	WANT (len);
		770	dec->cur += len;
		771
		772	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		773	if (!is_utf8_string (key, len))
		774	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		775
		776	hv_store (hv, key, -len, decode_sv (dec), 0);
		777
		778	return;
		779	}
		780
		781	SV *k = decode_sv (dec);
		782	SV *v = decode_sv (dec);
		783
		784	hv_store_ent (hv, k, v, 0);
		785	SvREFCNT_dec (k);
		786
		787	fail:
		788	;
		789	}
		790
589	static SV *	791	static SV *
590	decode_hv (dec_t *dec)	792	decode_hv (dec_t *dec)
591	{	793	{
592	HV *hv = newHV ();	794	HV *hv = newHV ();
593		795
594	DEC_INC_DEPTH;	796	DEC_INC_DEPTH;
595		797
596	if ((*dec->cur & 31) == 31)	798	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
597	{	799	{
598	++dec->cur;	800	++dec->cur;
599		801
600	for (;;)	802	for (;;)
601	{	803	{
602	WANT (1);	804	WANT (1);
603		805
604	if (*dec->cur == (0xe0 | 31))	806	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
605	{	807	{
606	++dec->cur;	808	++dec->cur;
607	break;	809	break;
608	}	810	}
609		811
610	SV *k = decode_sv (dec);	812	decode_he (dec, hv);
611	SV *v = decode_sv (dec);
612
613	hv_store_ent (hv, k, v, 0);
614	SvREFCNT_dec (k);
615	}	813	}
616	}	814	}
617	else	815	else
618	{	816	{
619	int len = decode_uint (dec);	817	int pairs = decode_uint (dec);
620		818
621	while (len--)	819	while (pairs--)
622	{	820	decode_he (dec, hv);
623	SV *k = decode_sv (dec);
624	SV *v = decode_sv (dec);
625
626	hv_store_ent (hv, k, v, 0);
627	SvREFCNT_dec (k);
628	}
629	}	821	}
630		822
631	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)hv);	824	return newRV_noinc ((SV *)hv);
633		825
…		…
640	static SV *	832	static SV *
641	decode_str (dec_t *dec, int utf8)	833	decode_str (dec_t *dec, int utf8)
642	{	834	{
643	SV *sv = 0;	835	SV *sv = 0;
644		836
645	if ((*dec->cur & 31) == 31)	837	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
646	{	838	{
		839	// indefinite length strings
647	++dec->cur;	840	++dec->cur;
648		841
		842	U8 major = *dec->cur & MAJOR_MISC;
		843
649	sv = newSVpvn ("", 0);	844	sv = newSVpvn ("", 0);
650		845
651	// not very fast, and certainly not robust against illegal input
652	for (;;)	846	for (;;)
653	{	847	{
654	WANT (1);	848	WANT (1);
655		849
656	if (*dec->cur == (0xe0 | 31))	850	if ((*dec->cur - major) > LENGTH_EXT8)
		851	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	852	{
658	++dec->cur;	853	++dec->cur;
659	break;	854	break;
660	}	855	}
		856	else
		857	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
661		858
662	sv_catsv (sv, decode_sv (dec));	859	STRLEN len = decode_uint (dec);
		860
		861	WANT (len);
		862	sv_catpvn (sv, dec->cur, len);
		863	dec->cur += len;
663	}	864	}
664	}	865	}
665	else	866	else
666	{	867	{
667	STRLEN len = decode_uint (dec);	868	STRLEN len = decode_uint (dec);
668		869
669	WANT (len);	870	WANT (len);
670	sv = newSVpvn (dec->cur, len);	871	sv = newSVpvn (dec->cur, len);
671	dec->cur += len;	872	dec->cur += len;
		873
		874	if (ecb_expect_false (dec->stringref)
		875	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		876	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
672	}	877	}
673		878
674	if (utf8)	879	if (utf8)
		880	{
		881	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		882	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		883	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		884
675	SvUTF8_on (sv);	885	SvUTF8_on (sv);
		886	}
676		887
677	return sv;	888	return sv;
678		889
679	fail:	890	fail:
680	SvREFCNT_dec (sv);	891	SvREFCNT_dec (sv);
…		…
682	}	893	}
683		894
684	static SV *	895	static SV *
685	decode_tagged (dec_t *dec)	896	decode_tagged (dec_t *dec)
686	{	897	{
		898	SV *sv = 0;
687	UV tag = decode_uint (dec);	899	UV tag = decode_uint (dec);
		900
		901	WANT (1);
		902
		903	switch (tag)
		904	{
		905	case CBOR_TAG_MAGIC:
688	SV *sv = decode_sv (dec);	906	sv = decode_sv (dec);
		907	break;
689		908
690	if (tag == CBOR_TAG_MAGIC)	909	case CBOR_TAG_INDIRECTION:
691	return sv;	910	sv = newRV_noinc (decode_sv (dec));
692	else if (tag == CBOR_TAG_PERL_OBJECT)	911	break;
693	{	912
		913	case CBOR_TAG_STRINGREF_NAMESPACE:
		914	{
		915	ENTER; SAVETMPS;
		916
		917	SAVESPTR (dec->stringref);
		918	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		919
		920	sv = decode_sv (dec);
		921
		922	FREETMPS; LEAVE;
		923	}
		924	break;
		925
		926	case CBOR_TAG_STRINGREF:
		927	{
		928	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		929	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		930
		931	UV idx = decode_uint (dec);
		932
		933	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		934	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		935
		936	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		937	}
		938	break;
		939
		940	case CBOR_TAG_VALUE_SHAREABLE:
		941	{
		942	if (ecb_expect_false (!dec->shareable))
		943	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		944
		945	if (dec->cbor.flags & F_ALLOW_CYCLES)
		946	{
		947	sv = newSV (0);
		948	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		949
		950	SV *osv = decode_sv (dec);
		951	sv_setsv (sv, osv);
		952	SvREFCNT_dec_NN (osv);
		953	}
		954	else
		955	{
		956	av_push (dec->shareable, &PL_sv_undef);
		957	int idx = AvFILLp (dec->shareable);
		958	sv = decode_sv (dec);
		959	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		960	}
		961	}
		962	break;
		963
		964	case CBOR_TAG_VALUE_SHAREDREF:
		965	{
		966	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		967	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		968
		969	UV idx = decode_uint (dec);
		970
		971	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		972	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		973
		974	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		975
		976	if (sv == &PL_sv_undef)
		977	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		978	}
		979	break;
		980
		981	case CBOR_TAG_PERL_OBJECT:
		982	{
		983	sv = decode_sv (dec);
		984
694	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	985	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
695	ERR ("corrupted CBOR data (non-array perl object)");	986	ERR ("corrupted CBOR data (non-array perl object)");
696		987
697	AV *av = (AV *)SvRV (sv);	988	AV *av = (AV *)SvRV (sv);
698	int len = av_len (av) + 1;	989	int len = av_len (av) + 1;
699	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	990	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
700		991
701	if (!stash)	992	if (!stash)
702	ERR ("cannot decode perl-object (package does not exist)");	993	ERR ("cannot decode perl-object (package does not exist)");
703		994
704	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	995	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
705		996
706	if (!method)	997	if (!method)
707	ERR ("cannot decode perl-object (package does not have a THAW method)");	998	ERR ("cannot decode perl-object (package does not have a THAW method)");
708		999
709	dSP;	1000	dSP;
710		1001
711	ENTER; SAVETMPS; PUSHMARK (SP);	1002	ENTER; SAVETMPS;
		1003	PUSHMARK (SP);
712	EXTEND (SP, len + 1);	1004	EXTEND (SP, len + 1);
713	// we re-bless the reference to get overload and other niceties right	1005	// we re-bless the reference to get overload and other niceties right
714	PUSHs (*av_fetch (av, 0, 1));	1006	PUSHs (*av_fetch (av, 0, 1));
715	PUSHs (sv_cbor);	1007	PUSHs (sv_cbor);
716		1008
717	int i;	1009	int i;
718		1010
719	for (i = 1; i < len; ++i)	1011	for (i = 1; i < len; ++i)
720	PUSHs (*av_fetch (av, i, 1));	1012	PUSHs (*av_fetch (av, i, 1));
721		1013
722	PUTBACK;	1014	PUTBACK;
723	call_sv ((SV *)GvCV (method), G_SCALAR);	1015	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
724	SPAGAIN;	1016	SPAGAIN;
725		1017
		1018	if (SvTRUE (ERRSV))
		1019	{
		1020	FREETMPS; LEAVE;
		1021	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1022	}
		1023
726	SvREFCNT_dec (sv);	1024	SvREFCNT_dec (sv);
727	sv = SvREFCNT_inc (POPs);	1025	sv = SvREFCNT_inc (POPs);
728		1026
729	PUTBACK;	1027	PUTBACK;
730		1028
731	FREETMPS; LEAVE;	1029	FREETMPS; LEAVE;
		1030	}
		1031	break;
732		1032
733	return sv;	1033	default:
734	}	1034	{
735	else	1035	sv = decode_sv (dec);
736	{	1036
		1037	dSP;
		1038	ENTER; SAVETMPS;
		1039	SAVESTACK_POS ();
		1040	PUSHMARK (SP);
		1041	EXTEND (SP, 2);
		1042	PUSHs (newSVuv (tag));
		1043	PUSHs (sv);
		1044
		1045	PUTBACK;
		1046	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1047	SPAGAIN;
		1048
		1049	if (SvTRUE (ERRSV))
		1050	{
		1051	FREETMPS; LEAVE;
		1052	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1053	}
		1054
		1055	if (count)
		1056	{
		1057	SvREFCNT_dec (sv);
		1058	sv = SvREFCNT_inc (POPs);
		1059	}
		1060	else
		1061	{
737	AV *av = newAV ();	1062	AV *av = newAV ();
738	av_push (av, newSVuv (tag));	1063	av_push (av, newSVuv (tag));
739	av_push (av, sv);	1064	av_push (av, sv);
740		1065
741	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1066	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
742	? cbor_tagged_stash	1067	? cbor_tagged_stash
743	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1068	: gv_stashpv ("CBOR::XS::Tagged" , 1);
744
745	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1069	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1070	}
		1071
		1072	PUTBACK;
		1073
		1074	FREETMPS; LEAVE;
		1075	}
		1076	break;
746	}	1077	}
		1078
		1079	return sv;
747		1080
748	fail:	1081	fail:
749	SvREFCNT_dec (sv);	1082	SvREFCNT_dec (sv);
750	return &PL_sv_undef;	1083	return &PL_sv_undef;
751	}	1084	}
…		…
753	static SV *	1086	static SV *
754	decode_sv (dec_t *dec)	1087	decode_sv (dec_t *dec)
755	{	1088	{
756	WANT (1);	1089	WANT (1);
757		1090
758	switch (*dec->cur >> 5)	1091	switch (*dec->cur >> MAJOR_SHIFT)
759	{	1092	{
760	case 0: // unsigned int	1093	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
761	return newSVuv (decode_uint (dec));	1094	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
762	case 1: // negative int	1095	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
763	return newSViv (-1 - (IV)decode_uint (dec));	1096	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
764	case 2: // octet string	1097	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
765	return decode_str (dec, 0);	1098	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
766	case 3: // utf-8 string	1099	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
767	return decode_str (dec, 1);	1100
768	case 4: // array	1101	case MAJOR_MISC >> MAJOR_SHIFT:
769	return decode_av (dec);
770	case 5: // map
771	return decode_hv (dec);
772	case 6: // tag
773	return decode_tagged (dec);
774	case 7: // misc
775	switch (*dec->cur++ & 31)	1102	switch (*dec->cur++ & MINOR_MASK)
776	{	1103	{
777	case 20:	1104	case SIMPLE_FALSE:
778	#if CBOR_SLOW	1105	#if CBOR_SLOW
779	types_false = get_bool ("Types::Serialiser::false");	1106	types_false = get_bool ("Types::Serialiser::false");
780	#endif	1107	#endif
781	return newSVsv (types_false);	1108	return newSVsv (types_false);
782	case 21:	1109	case SIMPLE_TRUE:
783	#if CBOR_SLOW	1110	#if CBOR_SLOW
784	types_true = get_bool ("Types::Serialiser::true");	1111	types_true = get_bool ("Types::Serialiser::true");
785	#endif	1112	#endif
786	return newSVsv (types_true);	1113	return newSVsv (types_true);
787	case 22:	1114	case SIMPLE_NULL:
788	return newSVsv (&PL_sv_undef);	1115	return newSVsv (&PL_sv_undef);
789	case 23:	1116	case SIMPLE_UNDEF:
790	#if CBOR_SLOW	1117	#if CBOR_SLOW
791	types_error = get_bool ("Types::Serialiser::error");	1118	types_error = get_bool ("Types::Serialiser::error");
792	#endif	1119	#endif
793	return newSVsv (types_error);	1120	return newSVsv (types_error);
794		1121
795	case 25:	1122	case MISC_FLOAT16:
796	{	1123	{
797	WANT (2);	1124	WANT (2);
798		1125
799	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1126	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
800	dec->cur += 2;	1127	dec->cur += 2;
801		1128
802	return newSVnv (ecb_binary16_to_float (fp));	1129	return newSVnv (ecb_binary16_to_float (fp));
803	}	1130	}
804		1131
805	case 26:	1132	case MISC_FLOAT32:
806	{	1133	{
807	uint32_t fp;	1134	uint32_t fp;
808	WANT (4);	1135	WANT (4);
809	memcpy (&fp, dec->cur, 4);	1136	memcpy (&fp, dec->cur, 4);
810	dec->cur += 4;	1137	dec->cur += 4;
…		…
813	fp = ecb_bswap32 (fp);	1140	fp = ecb_bswap32 (fp);
814		1141
815	return newSVnv (ecb_binary32_to_float (fp));	1142	return newSVnv (ecb_binary32_to_float (fp));
816	}	1143	}
817		1144
818	case 27:	1145	case MISC_FLOAT64:
819	{	1146	{
820	uint64_t fp;	1147	uint64_t fp;
821	WANT (8);	1148	WANT (8);
822	memcpy (&fp, dec->cur, 8);	1149	memcpy (&fp, dec->cur, 8);
823	dec->cur += 8;	1150	dec->cur += 8;
…		…
826	fp = ecb_bswap64 (fp);	1153	fp = ecb_bswap64 (fp);
827		1154
828	return newSVnv (ecb_binary64_to_double (fp));	1155	return newSVnv (ecb_binary64_to_double (fp));
829	}	1156	}
830		1157
831	// 0..19 unassigned	1158	// 0..19 unassigned simple
832	// 24 reserved + unassigned (reserved values are not encodable)	1159	// 24 reserved + unassigned simple (reserved values are not encodable)
		1160	// 28-30 unassigned misc
		1161	// 31 break code
833	default:	1162	default:
834	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1163	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
835	}	1164	}
836		1165
837	break;	1166	break;
838	}	1167	}
839		1168
…		…
842	}	1171	}
843		1172
844	static SV *	1173	static SV *
845	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1174	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
846	{	1175	{
847	dec_t dec;	1176	dec_t dec = { 0 };
848	SV *sv;	1177	SV *sv;
		1178	STRLEN len;
		1179	char *data = SvPVbyte (string, len);
849		1180
850	/* work around bugs in 5.10 where manipulating magic values
851	* makes perl ignore the magic in subsequent accesses.
852	* also make a copy of non-PV values, to get them into a clean
853	* state (SvPV should do that, but it's buggy, see below).
854	*/
855	/*SvGETMAGIC (string);*/
856	if (SvMAGICAL (string) || !SvPOK (string))
857	string = sv_2mortal (newSVsv (string));
858
859	SvUPGRADE (string, SVt_PV);
860
861	/* work around a bug in perl 5.10, which causes SvCUR to fail an
862	* assertion with -DDEBUGGING, although SvCUR is documented to
863	* return the xpv_cur field which certainly exists after upgrading.
864	* according to nicholas clark, calling SvPOK fixes this.
865	* But it doesn't fix it, so try another workaround, call SvPV_nolen
866	* and hope for the best.
867	* Damnit, SvPV_nolen still trips over yet another assertion. This
868	* assertion business is seriously broken, try yet another workaround
869	* for the broken -DDEBUGGING.
870	*/
871	{
872	#ifdef DEBUGGING
873	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
874	#else
875	STRLEN offset = SvCUR (string);
876	#endif
877
878	if (offset > cbor->max_size && cbor->max_size)	1181	if (len > cbor->max_size && cbor->max_size)
879	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1182	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
880	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1183	(unsigned long)len, (unsigned long)cbor->max_size);
881	}
882
883	sv_utf8_downgrade (string, 0);
884		1184
885	dec.cbor = *cbor;	1185	dec.cbor = *cbor;
886	dec.cur = (U8 *)SvPVX (string);	1186	dec.cur = (U8 *)data;
887	dec.end = (U8 *)SvEND (string);	1187	dec.end = (U8 *)data + len;
888	dec.err = 0;
889	dec.depth = 0;
890		1188
891	sv = decode_sv (&dec);	1189	sv = decode_sv (&dec);
892		1190
893	if (offset_return)	1191	if (offset_return)
894	*offset_return = dec.cur;	1192	*offset_return = dec.cur;
…		…
897	if (dec.cur != dec.end && !dec.err)	1195	if (dec.cur != dec.end && !dec.err)
898	dec.err = "garbage after CBOR object";	1196	dec.err = "garbage after CBOR object";
899		1197
900	if (dec.err)	1198	if (dec.err)
901	{	1199	{
		1200	if (dec.shareable)
		1201	{
		1202	// need to break cyclic links, which whould all be in shareable
		1203	int i;
		1204	SV **svp;
		1205
		1206	for (i = av_len (dec.shareable) + 1; i--; )
		1207	if ((svp = av_fetch (dec.shareable, i, 0)))
		1208	sv_setsv (*svp, &PL_sv_undef);
		1209	}
		1210
902	SvREFCNT_dec (sv);	1211	SvREFCNT_dec (sv);
903	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1212	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
904	}	1213	}
905		1214
906	sv = sv_2mortal (sv);	1215	sv = sv_2mortal (sv);
907		1216
908	return sv;	1217	return sv;
909	}	1218	}
910		1219
		1220	/////////////////////////////////////////////////////////////////////////////
		1221	// incremental parser
		1222
		1223	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1224
		1225	// returns 0 for notyet, 1 for success or error
		1226	static int
		1227	incr_parse (CBOR *self, SV *cborstr)
		1228	{
		1229	STRLEN cur;
		1230	SvPV (cborstr, cur);
		1231
		1232	while (ecb_expect_true (self->incr_need <= cur))
		1233	{
		1234	// table of integer count bytes
		1235	static I8 incr_len[MINOR_MASK + 1] = {
		1236	0, 0, 0, 0, 0, 0, 0, 0,
		1237	0, 0, 0, 0, 0, 0, 0, 0,
		1238	0, 0, 0, 0, 0, 0, 0, 0,
		1239	1, 2, 4, 8,-1,-1,-1,-2
		1240	};
		1241
		1242	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1243	U8 m = *p & MINOR_MASK;
		1244	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1245	I8 ilen = incr_len[m];
		1246
		1247	self->incr_need = self->incr_pos + 1;
		1248
		1249	if (ecb_expect_false (ilen < 0))
		1250	{
		1251	if (m != MINOR_INDEF)
		1252	return 1; // error
		1253
		1254	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1255	{
		1256	if (count >= 0)
		1257	return 1; // error
		1258
		1259	count = 1;
		1260	}
		1261	else
		1262	{
		1263	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1264	count = -1;
		1265	}
		1266	}
		1267	else
		1268	{
		1269	self->incr_need += ilen;
		1270	if (ecb_expect_false (self->incr_need > cur))
		1271	return 0;
		1272
		1273	int major = *p >> MAJOR_SHIFT;
		1274
		1275	switch (major)
		1276	{
		1277	case MAJOR_TAG >> MAJOR_SHIFT:
		1278	++count; // tags merely prefix another value
		1279	break;
		1280
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1284	case MAJOR_MAP >> MAJOR_SHIFT:
		1285	{
		1286	UV len;
		1287
		1288	if (ecb_expect_false (ilen))
		1289	{
		1290	len = 0;
		1291
		1292	do {
		1293	len = (len << 8) | *++p;
		1294	} while (--ilen);
		1295	}
		1296	else
		1297	len = m;
		1298
		1299	switch (major)
		1300	{
		1301	case MAJOR_BYTES >> MAJOR_SHIFT:
		1302	case MAJOR_TEXT >> MAJOR_SHIFT:
		1303	self->incr_need += len;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	break;
		1308
		1309	case MAJOR_MAP >> MAJOR_SHIFT:
		1310	len <<= 1;
		1311	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1312	if (len)
		1313	{
		1314	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1315	count = len + 1;
		1316	}
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322
		1323	self->incr_pos = self->incr_need;
		1324
		1325	if (count > 0)
		1326	{
		1327	while (!--count)
		1328	{
		1329	if (!AvFILLp (self->incr_count))
		1330	return 1; // done
		1331
		1332	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1333	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1334	}
		1335
		1336	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1337	}
		1338	}
		1339
		1340	return 0;
		1341	}
		1342
		1343
911	/////////////////////////////////////////////////////////////////////////////	1344	/////////////////////////////////////////////////////////////////////////////
912	// XS interface functions	1345	// XS interface functions
913		1346
914	MODULE = CBOR::XS PACKAGE = CBOR::XS	1347	MODULE = CBOR::XS PACKAGE = CBOR::XS
915		1348
…		…
922	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1355	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
923		1356
924	types_true = get_bool ("Types::Serialiser::true" );	1357	types_true = get_bool ("Types::Serialiser::true" );
925	types_false = get_bool ("Types::Serialiser::false");	1358	types_false = get_bool ("Types::Serialiser::false");
926	types_error = get_bool ("Types::Serialiser::error");	1359	types_error = get_bool ("Types::Serialiser::error");
		1360
		1361	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
927		1362
928	sv_cbor = newSVpv ("CBOR", 0);	1363	sv_cbor = newSVpv ("CBOR", 0);
929	SvREADONLY_on (sv_cbor);	1364	SvREADONLY_on (sv_cbor);
930	}	1365	}
931		1366
…		…
952		1387
953	void shrink (CBOR *self, int enable = 1)	1388	void shrink (CBOR *self, int enable = 1)
954	ALIAS:	1389	ALIAS:
955	shrink = F_SHRINK	1390	shrink = F_SHRINK
956	allow_unknown = F_ALLOW_UNKNOWN	1391	allow_unknown = F_ALLOW_UNKNOWN
		1392	allow_sharing = F_ALLOW_SHARING
		1393	allow_cycles = F_ALLOW_CYCLES
		1394	pack_strings = F_PACK_STRINGS
		1395	validate_utf8 = F_VALIDATE_UTF8
957	PPCODE:	1396	PPCODE:
958	{	1397	{
959	if (enable)	1398	if (enable)
960	self->flags |= ix;	1399	self->flags |= ix;
961	else	1400	else
…		…
966		1405
967	void get_shrink (CBOR *self)	1406	void get_shrink (CBOR *self)
968	ALIAS:	1407	ALIAS:
969	get_shrink = F_SHRINK	1408	get_shrink = F_SHRINK
970	get_allow_unknown = F_ALLOW_UNKNOWN	1409	get_allow_unknown = F_ALLOW_UNKNOWN
		1410	get_allow_sharing = F_ALLOW_SHARING
		1411	get_allow_cycles = F_ALLOW_CYCLES
		1412	get_pack_strings = F_PACK_STRINGS
		1413	get_validate_utf8 = F_VALIDATE_UTF8
971	PPCODE:	1414	PPCODE:
972	XPUSHs (boolSV (self->flags & ix));	1415	XPUSHs (boolSV (self->flags & ix));
973		1416
974	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1417	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
975	PPCODE:	1418	PPCODE:
…		…
991	CODE:	1434	CODE:
992	RETVAL = self->max_size;	1435	RETVAL = self->max_size;
993	OUTPUT:	1436	OUTPUT:
994	RETVAL	1437	RETVAL
995		1438
996	#if 0 //TODO	1439	void filter (CBOR *self, SV *filter = 0)
997
998	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
999	PPCODE:	1440	PPCODE:
1000	{
1001	SvREFCNT_dec (self->cb_object);	1441	SvREFCNT_dec (self->filter);
1002	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1442	self->filter = filter ? newSVsv (filter) : filter;
1003
1004	XPUSHs (ST (0));	1443	XPUSHs (ST (0));
1005	}
1006		1444
1007	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1445	SV *get_filter (CBOR *self)
1008	PPCODE:	1446	CODE:
1009	{	1447	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1010	if (!self->cb_sk_object)	1448	OUTPUT:
1011	self->cb_sk_object = newHV ();	1449	RETVAL
1012
1013	if (SvOK (cb))
1014	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1015	else
1016	{
1017	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1018
1019	if (!HvKEYS (self->cb_sk_object))
1020	{
1021	SvREFCNT_dec (self->cb_sk_object);
1022	self->cb_sk_object = 0;
1023	}
1024	}
1025
1026	XPUSHs (ST (0));
1027	}
1028
1029	#endif
1030		1450
1031	void encode (CBOR *self, SV *scalar)	1451	void encode (CBOR *self, SV *scalar)
1032	PPCODE:	1452	PPCODE:
1033	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1453	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1034	XPUSHs (scalar);	1454	XPUSHs (scalar);
…		…
1047	EXTEND (SP, 2);	1467	EXTEND (SP, 2);
1048	PUSHs (sv);	1468	PUSHs (sv);
1049	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1469	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1050	}	1470	}
1051		1471
1052	#if 0	1472	void incr_parse (CBOR *self, SV *cborstr)
		1473	ALIAS:
		1474	incr_parse_multiple = 1
		1475	PPCODE:
		1476	{
		1477	if (SvUTF8 (cborstr))
		1478	sv_utf8_downgrade (cborstr, 0);
		1479
		1480	if (!self->incr_count)
		1481	{
		1482	self->incr_count = newAV ();
		1483	self->incr_pos = 0;
		1484	self->incr_need = 1;
		1485
		1486	av_push (self->incr_count, newSViv (1));
		1487	}
		1488
		1489	do
		1490	{
		1491	if (!incr_parse (self, cborstr))
		1492	{
		1493	if (self->incr_need > self->max_size && self->max_size)
		1494	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1495	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1496
		1497	break;
		1498	}
		1499
		1500	SV *sv;
		1501	char *offset;
		1502
		1503	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1504	XPUSHs (sv);
		1505
		1506	sv_chop (cborstr, offset);
		1507
		1508	av_clear (self->incr_count);
		1509	av_push (self->incr_count, newSViv (1));
		1510
		1511	self->incr_pos = 0;
		1512	self->incr_need = self->incr_pos + 1;
		1513	}
		1514	while (ix);
		1515	}
		1516
		1517	void incr_reset (CBOR *self)
		1518	CODE:
		1519	{
		1520	SvREFCNT_dec (self->incr_count);
		1521	self->incr_count = 0;
		1522	}
1053		1523
1054	void DESTROY (CBOR *self)	1524	void DESTROY (CBOR *self)
1055	CODE:	1525	PPCODE:
1056	SvREFCNT_dec (self->cb_sk_object);	1526	cbor_free (self);
1057	SvREFCNT_dec (self->cb_object);
1058
1059	#endif
1060		1527
1061	PROTOTYPES: ENABLE	1528	PROTOTYPES: ENABLE
1062		1529
1063	void encode_cbor (SV *scalar)	1530	void encode_cbor (SV *scalar)
		1531	ALIAS:
		1532	encode_cbor = 0
		1533	encode_cbor_sharing = F_ALLOW_SHARING
1064	PPCODE:	1534	PPCODE:
1065	{	1535	{
1066	CBOR cbor;	1536	CBOR cbor;
1067	cbor_init (&cbor);	1537	cbor_init (&cbor);
		1538	cbor.flags |= ix;
1068	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1539	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1069	XPUSHs (scalar);	1540	XPUSHs (scalar);
1070	}	1541	}
1071		1542
1072	void decode_cbor (SV *cborstr)	1543	void decode_cbor (SV *cborstr)

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