ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.47 by root, Mon Apr 27 20:21:53 2015 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
16		106
17	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
18		108
19	#define SB do {	109	#define SB do {
20	#define SE } while (0)	110	#define SE } while (0)
…		…
31	#else	121	#else
32	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
34	#endif	124	#endif
35		125
36	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::
37	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		128
39	typedef struct {	129	typedef struct {
40	U32 flags;	130	U32 flags;
41	U32 max_depth;	131	U32 max_depth;
42	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
43		134
44	SV *cb_object;	135	// for the incremental parser
45	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.
46	} CBOR;	139	} CBOR;
47		140
48	ecb_inline void	141	ecb_inline void
49	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
50	{	143	{
51	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
52	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);
53	}	153	}
54		154
55	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	156	// utility functions
57		157
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	180	#endif
81	}	181	}
82	}	182	}
83		183
84	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
85	// fp hell	185	ecb_inline int
86		186	minimum_string_length (UV idx)
87	//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	}
88		198
89	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
90	// encoder	200	// encoder
91		201
92	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
97	SV *sv; // result scalar	207	SV *sv; // result scalar
98	CBOR cbor;	208	CBOR cbor;
99	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;
100	} enc_t;	214	} enc_t;
101		215
102	ecb_inline void	216	ecb_inline void
103	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
104	{	218	{
…		…
121	static void	235	static void
122	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
123	{	237	{
124	need (enc, 9);	238	need (enc, 9);
125		239
126	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
128	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
129	{	243	{
130	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	245	*enc->cur++ = len;
132	}	246	}
133	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
134	{	248	{
135	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	251	*enc->cur++ = len;
138	}	252	}
139	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
140	{	254	{
141	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	259	*enc->cur++ = len;
146	}	260	}
147	else	261	else
148	{	262	{
149	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	271	*enc->cur++ = len;
158	}	272	}
159	}	273	}
160		274
161	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
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	283	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	285	need (enc, len);
166	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
167	enc->cur += len;	287	enc->cur += len;
168	}	288	}
169		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
170	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
171		316
172	static void	317	static void
173	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
174	{	319	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
179		324
180	++enc->depth;	325	++enc->depth;
181		326
182	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		328
		329	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
185	{	331	{
186	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	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	}
189		341
190	--enc->depth;	342	--enc->depth;
191	}	343	}
192		344
193	static void	345	static void
…		…
202		354
203	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
205		357
206	if (mg)	358	if (mg)
207	encode_ch (enc, 0xa0 | 31);	359	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	360	else
209	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
210		362
211	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
212	{	364	{
213	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
215	else	367	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		369
218	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));
219	}	371	}
220		372
221	if (mg)	373	if (mg)
222	encode_ch (enc, 0xe0 | 31);	374	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		375
224	--enc->depth;	376	--enc->depth;
225	}	377	}
226		378
227	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
228	static void	380	static void
229	encode_rv (enc_t *enc, SV *sv)	381	encode_rv (enc_t *enc, SV *sv)
230	{	382	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
		384
234	svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
235		386
236	if (ecb_expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
237	{	388	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	389	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? 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
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		398
242	if (SvSTASH (sv) == stash)	399	HV *stash = SvSTASH (sv);
243	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	}
244	else	437	else
245	{	438	{
246	#if 0 //TODO	439	sv_setuv (*svp, enc->shareable_idx);
247	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)))
248	{	451	{
		452	dSP;
		453
		454	ENTER; SAVETMPS; PUSHMARK (SP);
249	// 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
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	456	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		457
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	458	PUTBACK;
		459	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	460	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	461	SPAGAIN;
263		462
264	// catch this surprisingly common error	463	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	464	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	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));
267		466
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	467	encode_sv (enc, POPs);
272		468
		469	PUTBACK;
		470
273	FREETMPS; LEAVE;	471	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	472	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	473	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	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	}
283	else	502	else
284	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",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	505	}
289	else if (svt == SVt_PVHV)	506	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	507	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	508	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	509	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	510	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	511	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	512	encode_tag (enc, CBOR_TAG_INDIRECTION);
		513	encode_sv (enc, sv);
		514	}
313	}	515	}
314		516
315	static void	517	static void
316	encode_nv (enc_t *enc, SV *sv)	518	encode_nv (enc_t *enc, SV *sv)
317	{	519	{
318	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
319		521
320	need (enc, 9);	522	need (enc, 9);
321		523
322	if (ecb_expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	526	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
326	{	528	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
328		530
329	*enc->cur++ = 0xe0 | 26;	531	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		532
331	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
333		535
334	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
336	}	538	}
337	else	539	else
338	{	540	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
340		542
341	*enc->cur++ = 0xe0 | 27;	543	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		544
343	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
345		547
346	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
355		557
356	if (SvPOKp (sv))	558	if (SvPOKp (sv))
357	{	559	{
358	STRLEN len;	560	STRLEN len;
359	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
361	}	563	}
362	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	565	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
365	{	567	{
366	if (SvIsUV (sv))	568	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	572	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	574	}
373	else if (SvROK (sv))	575	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	577	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	578	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	580	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	581	else
380	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",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	584	}
383		585
384	static SV *	586	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	587	encode_cbor (SV *scalar, CBOR *cbor)
386	{	588	{
387	enc_t enc;	589	enc_t enc = { };
388		590
389	enc.cbor = *cbor;	591	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		595
395	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
396	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
397		606
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*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
400		609
…		…
414	U8 *end; // end of input string	623	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
416	CBOR cbor;	625	CBOR cbor;
417	U32 depth; // recursion depth	626	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
		628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
419	} dec_t;	631	} dec_t;
420		632
421	#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
422		634
423	#define WANT(len) if (ecb_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")
…		…
426	#define DEC_DEC_DEPTH --dec->depth	638	#define DEC_DEC_DEPTH --dec->depth
427		639
428	static UV	640	static UV
429	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
430	{	642	{
431	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
432	{	644	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		645
438	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
439	WANT (2);	650	WANT (1);
440	dec->cur += 2;	651	dec->cur += 1;
441	return dec->cur[-1];	652	return dec->cur[-1];
442		653	}
443	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
444	WANT (3);	656	WANT (2);
445	dec->cur += 3;	657	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	659	| ((UV)dec->cur[-1]);
448		660	}
449	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
450	WANT (5);	663	WANT (4);
451	dec->cur += 5;	664	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	666	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	667	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	668	| ((UV)dec->cur[-1]);
456		669	}
457	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
458	WANT (9);	672	WANT (8);
459	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
460	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	680	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	681	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	682	| (((UV)dec->cur[-5]) << 32)
		683	#endif
464	| (((UV)dec->cur[-4]) << 24)	684	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	685	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	686	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	687	| ((UV)dec->cur[-1]);
468		688	}
469	default:	689	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		691
473	fail:	692	fail:
474	return 0;	693	return 0;
475	}	694	}
476		695
…		…
481	{	700	{
482	AV *av = newAV ();	701	AV *av = newAV ();
483		702
484	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
485		704
486	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	706	{
488	++dec->cur;	707	++dec->cur;
489		708
490	for (;;)	709	for (;;)
491	{	710	{
492	WANT (1);	711	WANT (1);
493		712
494	if (*dec->cur == (0xe0 | 31))	713	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	714	{
496	++dec->cur;	715	++dec->cur;
497	break;	716	break;
498	}	717	}
499		718
…		…
502	}	721	}
503	else	722	else
504	{	723	{
505	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
506		725
		726	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	727	av_fill (av, len - 1);
508		728
509	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
511	}	731	}
…		…
517	SvREFCNT_dec (av);	737	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	738	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	739	return &PL_sv_undef;
520	}	740	}
521		741
		742	static void
		743	decode_he (dec_t *dec, HV *hv)
		744	{
		745	// for speed reasons, we specialcase single-string
		746	// byte or utf-8 strings as keys, but only when !stringref
		747
		748	if (ecb_expect_true (!dec->stringref))
		749	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		750	{
		751	I32 len = decode_uint (dec);
		752	char *key = (char *)dec->cur;
		753
		754	dec->cur += len;
		755
		756	hv_store (hv, key, len, decode_sv (dec), 0);
		757
		758	return;
		759	}
		760	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		761	{
		762	I32 len = decode_uint (dec);
		763	char *key = (char *)dec->cur;
		764
		765	dec->cur += len;
		766
		767	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		768	if (!is_utf8_string (key, len))
		769	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		770
		771	hv_store (hv, key, -len, decode_sv (dec), 0);
		772
		773	return;
		774	}
		775
		776	SV *k = decode_sv (dec);
		777	SV *v = decode_sv (dec);
		778
		779	hv_store_ent (hv, k, v, 0);
		780	SvREFCNT_dec (k);
		781
		782	fail:
		783	;
		784	}
		785
522	static SV *	786	static SV *
523	decode_hv (dec_t *dec)	787	decode_hv (dec_t *dec)
524	{	788	{
525	HV *hv = newHV ();	789	HV *hv = newHV ();
526		790
527	DEC_INC_DEPTH;	791	DEC_INC_DEPTH;
528		792
529	if ((*dec->cur & 31) == 31)	793	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	794	{
531	++dec->cur;	795	++dec->cur;
532		796
533	for (;;)	797	for (;;)
534	{	798	{
535	WANT (1);	799	WANT (1);
536		800
537	if (*dec->cur == (0xe0 | 31))	801	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	802	{
539	++dec->cur;	803	++dec->cur;
540	break;	804	break;
541	}	805	}
542		806
543	SV *k = decode_sv (dec);	807	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	808	}
548	}	809	}
549	else	810	else
550	{	811	{
551	int len = decode_uint (dec);	812	int pairs = decode_uint (dec);
552		813
553	while (len--)	814	while (pairs--)
554	{	815	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	816	}
561		817
562	DEC_DEC_DEPTH;	818	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	819	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		820
720	fail:	821	fail:
721	SvREFCNT_dec (hv);	822	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	823	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	824	return &PL_sv_undef;
724	}	825	}
725		826
726	static SV *	827	static SV *
727	decode_str (dec_t *dec, int utf8)	828	decode_str (dec_t *dec, int utf8)
728	{	829	{
729	SV *sv;	830	SV *sv = 0;
730		831
731	if ((*dec->cur & 31) == 31)	832	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	833	{
		834	// indefinite length strings
733	++dec->cur;	835	++dec->cur;
734		836
		837	U8 major = *dec->cur & MAJOR_MISC;
		838
735	sv = newSVpvn ("", 0);	839	sv = newSVpvn ("", 0);
736		840
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	841	for (;;)
739	{	842	{
740	WANT (1);	843	WANT (1);
741		844
742	if (*dec->cur == (0xe0 | 31))	845	if ((*dec->cur - major) > LENGTH_EXT8)
		846	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	847	{
744	++dec->cur;	848	++dec->cur;
745	break;	849	break;
746	}	850	}
		851	else
		852	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		853
748	SV *sv2 = decode_sv (dec);	854	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	855
		856	WANT (len);
		857	sv_catpvn (sv, dec->cur, len);
		858	dec->cur += len;
750	}	859	}
751	}	860	}
752	else	861	else
753	{	862	{
754	STRLEN len = decode_uint (dec);	863	STRLEN len = decode_uint (dec);
755		864
756	WANT (len);	865	WANT (len);
757	sv = newSVpvn (dec->cur, len);	866	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	867	dec->cur += len;
		868
		869	if (ecb_expect_false (dec->stringref)
		870	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		871	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	872	}
760		873
761	if (utf8)	874	if (utf8)
		875	{
		876	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		877	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		878	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		879
762	SvUTF8_on (sv);	880	SvUTF8_on (sv);
		881	}
763		882
764	return sv;	883	return sv;
765		884
766	fail:	885	fail:
		886	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	887	return &PL_sv_undef;
768	}	888	}
769		889
770	static SV *	890	static SV *
771	decode_tagged (dec_t *dec)	891	decode_tagged (dec_t *dec)
772	{	892	{
		893	SV *sv = 0;
773	UV tag = decode_uint (dec);	894	UV tag = decode_uint (dec);
		895
		896	WANT (1);
		897
		898	switch (tag)
		899	{
		900	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	901	sv = decode_sv (dec);
		902	break;
775		903
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	904	case CBOR_TAG_INDIRECTION:
		905	sv = newRV_noinc (decode_sv (dec));
		906	break;
		907
		908	case CBOR_TAG_STRINGREF_NAMESPACE:
		909	{
		910	ENTER; SAVETMPS;
		911
		912	SAVESPTR (dec->stringref);
		913	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		914
		915	sv = decode_sv (dec);
		916
		917	FREETMPS; LEAVE;
		918	}
		919	break;
		920
		921	case CBOR_TAG_STRINGREF:
		922	{
		923	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		924	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		925
		926	UV idx = decode_uint (dec);
		927
		928	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		929	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		930
		931	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		932	}
		933	break;
		934
		935	case CBOR_TAG_VALUE_SHAREABLE:
		936	{
		937	if (ecb_expect_false (!dec->shareable))
		938	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		939
		940	if (dec->cbor.flags & F_ALLOW_CYCLES)
		941	{
		942	sv = newSV (0);
		943	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		944
		945	SV *osv = decode_sv (dec);
		946	sv_setsv (sv, osv);
		947	SvREFCNT_dec_NN (osv);
		948	}
		949	else
		950	{
		951	av_push (dec->shareable, &PL_sv_undef);
		952	int idx = AvFILLp (dec->shareable);
		953	sv = decode_sv (dec);
		954	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		955	}
		956	}
		957	break;
		958
		959	case CBOR_TAG_VALUE_SHAREDREF:
		960	{
		961	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		962	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		963
		964	UV idx = decode_uint (dec);
		965
		966	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		967	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		968
		969	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		970
		971	if (sv == &PL_sv_undef)
		972	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		973	}
		974	break;
		975
		976	case CBOR_TAG_PERL_OBJECT:
		977	{
		978	sv = decode_sv (dec);
		979
		980	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		981	ERR ("corrupted CBOR data (non-array perl object)");
		982
		983	AV *av = (AV *)SvRV (sv);
		984	int len = av_len (av) + 1;
		985	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		986
		987	if (!stash)
		988	ERR ("cannot decode perl-object (package does not exist)");
		989
		990	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		991
		992	if (!method)
		993	ERR ("cannot decode perl-object (package does not have a THAW method)");
		994
		995	dSP;
		996
		997	ENTER; SAVETMPS; PUSHMARK (SP);
		998	EXTEND (SP, len + 1);
		999	// we re-bless the reference to get overload and other niceties right
		1000	PUSHs (*av_fetch (av, 0, 1));
		1001	PUSHs (sv_cbor);
		1002
		1003	int i;
		1004
		1005	for (i = 1; i < len; ++i)
		1006	PUSHs (*av_fetch (av, i, 1));
		1007
		1008	PUTBACK;
		1009	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1010	SPAGAIN;
		1011
		1012	if (SvTRUE (ERRSV))
		1013	{
		1014	FREETMPS; LEAVE;
		1015	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1016	}
		1017
		1018	SvREFCNT_dec (sv);
		1019	sv = SvREFCNT_inc (POPs);
		1020
		1021	PUTBACK;
		1022
		1023	FREETMPS; LEAVE;
		1024	}
		1025	break;
		1026
		1027	default:
		1028	{
		1029	sv = decode_sv (dec);
		1030
		1031	dSP;
		1032	ENTER; SAVETMPS; PUSHMARK (SP);
		1033	EXTEND (SP, 2);
		1034	PUSHs (newSVuv (tag));
		1035	PUSHs (sv);
		1036
		1037	PUTBACK;
		1038	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1039	SPAGAIN;
		1040
		1041	if (SvTRUE (ERRSV))
		1042	{
		1043	FREETMPS; LEAVE;
		1044	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1045	}
		1046
		1047	if (count)
		1048	{
		1049	SvREFCNT_dec (sv);
		1050	sv = SvREFCNT_inc (POPs);
		1051	}
		1052	else
		1053	{
		1054	AV *av = newAV ();
		1055	av_push (av, newSVuv (tag));
		1056	av_push (av, sv);
		1057
		1058	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1059	? cbor_tagged_stash
		1060	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1061	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1062	}
		1063
		1064	PUTBACK;
		1065
		1066	FREETMPS; LEAVE;
		1067	}
		1068	break;
		1069	}
		1070
777	return sv;	1071	return sv;
778		1072
779	AV *av = newAV ();	1073	fail:
780	av_push (av, newSVuv (tag));	1074	SvREFCNT_dec (sv);
781	av_push (av, sv);	1075	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1076	}
784		1077
785	static SV *	1078	static SV *
786	decode_sv (dec_t *dec)	1079	decode_sv (dec_t *dec)
787	{	1080	{
788	WANT (1);	1081	WANT (1);
789		1082
790	switch (*dec->cur >> 5)	1083	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1084	{
792	case 0: // unsigned int	1085	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1086	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1087	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1088	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1089	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1090	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1091	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1092
800	return decode_str (dec, 1);	1093	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1094	switch (*dec->cur++ & MINOR_MASK)
809	{	1095	{
810	case 20:	1096	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1097	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1098	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1099	#endif
814	return newSVsv (cbor_false);	1100	return newSVsv (types_false);
815	case 21:	1101	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1102	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1103	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1104	#endif
819	return newSVsv (cbor_true);	1105	return newSVsv (types_true);
820	case 22:	1106	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1107	return newSVsv (&PL_sv_undef);
		1108	case SIMPLE_UNDEF:
		1109	#if CBOR_SLOW
		1110	types_error = get_bool ("Types::Serialiser::error");
		1111	#endif
		1112	return newSVsv (types_error);
822		1113
823	case 25:	1114	case MISC_FLOAT16:
824	{	1115	{
825	WANT (2);	1116	WANT (2);
826		1117
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1118	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1119	dec->cur += 2;
829		1120
830	return newSVnv (ecb_binary16_to_float (fp));	1121	return newSVnv (ecb_binary16_to_float (fp));
831	}	1122	}
832		1123
833	case 26:	1124	case MISC_FLOAT32:
834	{	1125	{
835	uint32_t fp;	1126	uint32_t fp;
836	WANT (4);	1127	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1128	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1129	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1132	fp = ecb_bswap32 (fp);
842		1133
843	return newSVnv (ecb_binary32_to_float (fp));	1134	return newSVnv (ecb_binary32_to_float (fp));
844	}	1135	}
845		1136
846	case 27:	1137	case MISC_FLOAT64:
847	{	1138	{
848	uint64_t fp;	1139	uint64_t fp;
849	WANT (8);	1140	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1141	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1142	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1145	fp = ecb_bswap64 (fp);
855		1146
856	return newSVnv (ecb_binary64_to_double (fp));	1147	return newSVnv (ecb_binary64_to_double (fp));
857	}	1148	}
858		1149
859	// 0..19 unassigned	1150	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1151	// 24 reserved + unassigned simple (reserved values are not encodable)
		1152	// 28-30 unassigned misc
		1153	// 31 break code
861	default:	1154	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1155	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1156	}
864		1157
865	break;	1158	break;
866	}	1159	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1160
924	fail:	1161	fail:
925	return &PL_sv_undef;	1162	return &PL_sv_undef;
926	}	1163	}
927		1164
928	static SV *	1165	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1166	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1167	{
931	dec_t dec;	1168	dec_t dec = { };
932	SV *sv;	1169	SV *sv;
		1170	STRLEN len;
		1171	char *data = SvPVbyte (string, len);
933		1172
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1173	if (len > cbor->max_size && cbor->max_size)
963	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1174	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1175	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1176
969	dec.cbor = *cbor;	1177	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1178	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1179	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1180
978	sv = decode_sv (&dec);	1181	sv = decode_sv (&dec);
979		1182
980	if (offset_return)	1183	if (offset_return)
981	*offset_return = dec.cur;	1184	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1187	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1188	dec.err = "garbage after CBOR object";
986		1189
987	if (dec.err)	1190	if (dec.err)
988	{	1191	{
		1192	if (dec.shareable)
		1193	{
		1194	// need to break cyclic links, which whould all be in shareable
		1195	int i;
		1196	SV **svp;
		1197
		1198	for (i = av_len (dec.shareable) + 1; i--; )
		1199	if ((svp = av_fetch (dec.shareable, i, 0)))
		1200	sv_setsv (*svp, &PL_sv_undef);
		1201	}
		1202
989	SvREFCNT_dec (sv);	1203	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1204	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1205	}
992		1206
993	sv = sv_2mortal (sv);	1207	sv = sv_2mortal (sv);
994		1208
995	return sv;	1209	return sv;
996	}	1210	}
997		1211
		1212	/////////////////////////////////////////////////////////////////////////////
		1213	// incremental parser
		1214
		1215	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1216
		1217	// returns 0 for notyet, 1 for success or error
		1218	static int
		1219	incr_parse (CBOR *self, SV *cborstr)
		1220	{
		1221	STRLEN cur;
		1222	SvPV (cborstr, cur);
		1223
		1224	while (ecb_expect_true (self->incr_need <= cur))
		1225	{
		1226	// table of integer count bytes
		1227	static I8 incr_len[MINOR_MASK + 1] = {
		1228	0, 0, 0, 0, 0, 0, 0, 0,
		1229	0, 0, 0, 0, 0, 0, 0, 0,
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	1, 2, 4, 8,-1,-1,-1,-2
		1232	};
		1233
		1234	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1235	U8 m = *p & MINOR_MASK;
		1236	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1237	I8 ilen = incr_len[m];
		1238
		1239	self->incr_need = self->incr_pos + 1;
		1240
		1241	if (ecb_expect_false (ilen < 0))
		1242	{
		1243	if (m != MINOR_INDEF)
		1244	return 1; // error
		1245
		1246	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1247	{
		1248	if (count >= 0)
		1249	return 1; // error
		1250
		1251	count = 1;
		1252	}
		1253	else
		1254	{
		1255	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1256	count = -1;
		1257	}
		1258	}
		1259	else
		1260	{
		1261	self->incr_need += ilen;
		1262	if (ecb_expect_false (self->incr_need > cur))
		1263	return 0;
		1264
		1265	int major = *p >> MAJOR_SHIFT;
		1266
		1267	switch (major)
		1268	{
		1269	case MAJOR_TAG >> MAJOR_SHIFT:
		1270	++count; // tags merely prefix another value
		1271	break;
		1272
		1273	case MAJOR_BYTES >> MAJOR_SHIFT:
		1274	case MAJOR_TEXT >> MAJOR_SHIFT:
		1275	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1276	case MAJOR_MAP >> MAJOR_SHIFT:
		1277	{
		1278	UV len;
		1279
		1280	if (ecb_expect_false (ilen))
		1281	{
		1282	len = 0;
		1283
		1284	do {
		1285	len = (len << 8) | *++p;
		1286	} while (--ilen);
		1287	}
		1288	else
		1289	len = m;
		1290
		1291	switch (major)
		1292	{
		1293	case MAJOR_BYTES >> MAJOR_SHIFT:
		1294	case MAJOR_TEXT >> MAJOR_SHIFT:
		1295	self->incr_need += len;
		1296	if (ecb_expect_false (self->incr_need > cur))
		1297	return 0;
		1298
		1299	break;
		1300
		1301	case MAJOR_MAP >> MAJOR_SHIFT:
		1302	len <<= 1;
		1303	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1304	if (len)
		1305	{
		1306	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1307	count = len + 1;
		1308	}
		1309	break;
		1310	}
		1311	}
		1312	}
		1313	}
		1314
		1315	self->incr_pos = self->incr_need;
		1316
		1317	if (count > 0)
		1318	{
		1319	while (!--count)
		1320	{
		1321	if (!AvFILLp (self->incr_count))
		1322	return 1; // done
		1323
		1324	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1325	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1326	}
		1327
		1328	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1329	}
		1330	}
		1331
		1332	return 0;
		1333	}
		1334
		1335
998	/////////////////////////////////////////////////////////////////////////////	1336	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1337	// XS interface functions
1000		1338
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1339	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1340
1003	BOOT:	1341	BOOT:
1004	{	1342	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1343	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1344	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1345
1008	cbor_true = get_bool ("CBOR::XS::true");	1346	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1347	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1348
		1349	types_true = get_bool ("Types::Serialiser::true" );
		1350	types_false = get_bool ("Types::Serialiser::false");
		1351	types_error = get_bool ("Types::Serialiser::error");
		1352
		1353	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1354
		1355	sv_cbor = newSVpv ("CBOR", 0);
		1356	SvREADONLY_on (sv_cbor);
1010	}	1357	}
1011		1358
1012	PROTOTYPES: DISABLE	1359	PROTOTYPES: DISABLE
1013		1360
1014	void CLONE (...)	1361	void CLONE (...)
1015	CODE:	1362	CODE:
1016	cbor_stash = 0;	1363	cbor_stash = 0;
		1364	cbor_tagged_stash = 0;
		1365	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1366	types_boolean_stash = 0;
1018		1367
1019	void new (char *klass)	1368	void new (char *klass)
1020	PPCODE:	1369	PPCODE:
1021	{	1370	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1371	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1379
1031	void shrink (CBOR *self, int enable = 1)	1380	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1381	ALIAS:
1033	shrink = F_SHRINK	1382	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1383	allow_unknown = F_ALLOW_UNKNOWN
		1384	allow_sharing = F_ALLOW_SHARING
		1385	allow_cycles = F_ALLOW_CYCLES
		1386	pack_strings = F_PACK_STRINGS
		1387	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1388	PPCODE:
1036	{	1389	{
1037	if (enable)	1390	if (enable)
1038	self->flags |= ix;	1391	self->flags |= ix;
1039	else	1392	else
…		…
1044		1397
1045	void get_shrink (CBOR *self)	1398	void get_shrink (CBOR *self)
1046	ALIAS:	1399	ALIAS:
1047	get_shrink = F_SHRINK	1400	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1401	get_allow_unknown = F_ALLOW_UNKNOWN
		1402	get_allow_sharing = F_ALLOW_SHARING
		1403	get_allow_cycles = F_ALLOW_CYCLES
		1404	get_pack_strings = F_PACK_STRINGS
		1405	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1406	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1407	XPUSHs (boolSV (self->flags & ix));
1051		1408
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1409	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1410	PPCODE:
…		…
1069	CODE:	1426	CODE:
1070	RETVAL = self->max_size;	1427	RETVAL = self->max_size;
1071	OUTPUT:	1428	OUTPUT:
1072	RETVAL	1429	RETVAL
1073		1430
1074	#if 0 //TODO	1431	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1432	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1433	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1434	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1435	XPUSHs (ST (0));
1083	}
1084		1436
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1437	SV *get_filter (CBOR *self)
1086	PPCODE:	1438	CODE:
1087	{	1439	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1440	OUTPUT:
1089	self->cb_sk_object = newHV ();	1441	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1442
1109	void encode (CBOR *self, SV *scalar)	1443	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1444	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1445	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1446	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1459	EXTEND (SP, 2);
1126	PUSHs (sv);	1460	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1461	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1462	}
1129		1463
		1464	void incr_parse (CBOR *self, SV *cborstr)
		1465	ALIAS:
		1466	incr_parse_multiple = 1
		1467	PPCODE:
		1468	{
		1469	if (SvUTF8 (cborstr))
		1470	sv_utf8_downgrade (cborstr, 0);
		1471
		1472	if (!self->incr_count)
		1473	{
		1474	self->incr_count = newAV ();
		1475	self->incr_pos = 0;
		1476	self->incr_need = 1;
		1477
		1478	av_push (self->incr_count, newSViv (1));
		1479	}
		1480
		1481	do
		1482	{
		1483	if (!incr_parse (self, cborstr))
		1484	{
		1485	if (self->incr_need > self->max_size && self->max_size)
		1486	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1487	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1488
		1489	break;
		1490	}
		1491
		1492	SV *sv;
		1493	char *offset;
		1494
		1495	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1496	XPUSHs (sv);
		1497
		1498	sv_chop (cborstr, offset);
		1499
		1500	av_clear (self->incr_count);
		1501	av_push (self->incr_count, newSViv (1));
		1502
		1503	self->incr_pos = 0;
		1504	self->incr_need = self->incr_pos + 1;
		1505	}
		1506	while (ix);
		1507	}
		1508
		1509	void incr_reset (CBOR *self)
		1510	CODE:
		1511	{
		1512	SvREFCNT_dec (self->incr_count);
		1513	self->incr_count = 0;
		1514	}
		1515
1130	void DESTROY (CBOR *self)	1516	void DESTROY (CBOR *self)
1131	CODE:	1517	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1518	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1519
1135	PROTOTYPES: ENABLE	1520	PROTOTYPES: ENABLE
1136		1521
1137	void encode_cbor (SV *scalar)	1522	void encode_cbor (SV *scalar)
		1523	ALIAS:
		1524	encode_cbor = 0
		1525	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1526	PPCODE:
1139	{	1527	{
1140	CBOR cbor;	1528	CBOR cbor;
1141	cbor_init (&cbor);	1529	cbor_init (&cbor);
		1530	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1531	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1532	XPUSHs (scalar);
1144	}	1533	}
1145		1534
1146	void decode_cbor (SV *cborstr)	1535	void decode_cbor (SV *cborstr)

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines