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 1.57 by root, Fri Nov 25 12:16:12 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
16		108
17	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
18		110
19	#define SB do {	111	#define SB do {
20	#define SE } while (0)	112	#define SE } while (0)
…		…
31	#else	123	#else
32	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
34	#endif	126	#endif
35		127
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		130
39	typedef struct {	131	typedef struct {
40	U32 flags;	132	U32 flags;
41	U32 max_depth;	133	U32 max_depth;
42	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
43		136
44	SV *cb_object;	137	// for the incremental parser
45	HV *cb_sk_object;	138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	141	} CBOR;
47		142
48	ecb_inline void	143	ecb_inline void
49	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
50	{	145	{
51	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
53	}	155	}
54		156
55	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	158	// utility functions
57		159
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	182	#endif
81	}	183	}
82	}	184	}
83		185
84	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
85	// fp hell	187	ecb_inline int
86		188	minimum_string_length (UV idx)
87	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
88		200
89	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
90	// encoder	202	// encoder
91		203
92	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
97	SV *sv; // result scalar	209	SV *sv; // result scalar
98	CBOR cbor;	210	CBOR cbor;
99	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
100	} enc_t;	216	} enc_t;
101		217
102	ecb_inline void	218	ecb_inline void
103	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
104	{	220	{
…		…
121	static void	237	static void
122	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
123	{	239	{
124	need (enc, 9);	240	need (enc, 9);
125		241
126	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
128	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
129	{	245	{
130	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	247	*enc->cur++ = len;
132	}	248	}
133	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
134	{	250	{
135	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	253	*enc->cur++ = len;
138	}	254	}
139	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
140	{	256	{
141	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	261	*enc->cur++ = len;
146	}	262	}
147	else	263	else
148	{	264	{
149	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	273	*enc->cur++ = len;
158	}	274	}
159	}	275	}
160		276
161	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	286	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	317	need (enc, len);
166	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
167	enc->cur += len;	319	enc->cur += len;
168	}	320	}
169		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
170	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
171		348
172	static void	349	static void
173	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
174	{	351	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
179		356
180	++enc->depth;	357	++enc->depth;
181		358
182	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		360
		361	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
185	{	363	{
186	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
189		373
190	--enc->depth;	374	--enc->depth;
191	}	375	}
192		376
193	static void	377	static void
…		…
202		386
203	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
205		389
206	if (mg)	390	if (mg)
207	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	392	else
209	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
210		394
211	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
212	{	396	{
213	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
215	else	399	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		401
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	403	}
220		404
221	if (mg)	405	if (mg)
222	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		407
224	--enc->depth;	408	--enc->depth;
225	}	409	}
226		410
227	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
228	static void	412	static void
229	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
230	{	414	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
234	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
235		418
236	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
237	{	420	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	422	? types_boolean_stash
		423	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		424	HV *error_stash = !CBOR_SLOW || types_error_stash
		425	? types_error_stash
		426	: gv_stashpv ("Types::Serialiser::Error", 1);
		427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		428	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		430
242	if (SvSTASH (sv) == stash)	431	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	432
		433	if (stash == boolean_stash)
		434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
		438	else if (stash == error_stash)
		439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
		443	else if (stash == tagged_stash)
		444	{
		445	if (svt != SVt_PVAV)
		446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		447
		448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
		468	}
244	else	469	else
245	{	470	{
246	#if 0 //TODO	471	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	488	// 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)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		490
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	494	SPAGAIN;
263		495
264	// catch this surprisingly common error	496	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	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)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		499
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	500	encode_sv (enc, POPs);
272		501
		502	PUTBACK;
		503
273	FREETMPS; LEAVE;	504	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	}	505	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
283	else	537	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	540	}
289	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	544	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	545	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
313	}	550	}
314		551
315	static void	552	static void
316	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
317	{	554	{
318	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
319		556
320	need (enc, 9);	557	need (enc, 9);
321		558
322	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	561	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
326	{	563	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
328		565
329	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		567
331	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
333		570
334	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
336	}	573	}
337	else	574	else
338	{	575	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
340		577
341	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		579
343	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
345		582
346	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
355		592
356	if (SvPOKp (sv))	593	if (SvPOKp (sv))
357	{	594	{
358	STRLEN len;	595	STRLEN len;
359	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
361	}	598	}
362	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	600	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
365	{	602	{
366	if (SvIsUV (sv))	603	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	607	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	609	}
373	else if (SvROK (sv))	610	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	612	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	616	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	619	}
383		620
384	static SV *	621	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
386	{	623	{
387	enc_t enc;	624	enc_t enc = { 0 };
388		625
389	enc.cbor = *cbor;	626	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		630
395	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
396	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
397		641
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		644
…		…
414	U8 *end; // end of input string	658	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
416	CBOR cbor;	660	CBOR cbor;
417	U32 depth; // recursion depth	661	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
419	} dec_t;	666	} dec_t;
420		667
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
422		669
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	670	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR ("unexpected end of CBOR data")
424		671
425	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	672	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
426	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
427		674
428	static UV	675	static UV
429	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
430	{	677	{
431	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
432	{	679	++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		680
438	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
439	WANT (2);	685	WANT (1);
440	dec->cur += 2;	686	dec->cur += 1;
441	return dec->cur[-1];	687	return dec->cur[-1];
442		688	}
443	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
444	WANT (3);	691	WANT (2);
445	dec->cur += 3;	692	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	694	| ((UV)dec->cur[-1]);
448		695	}
449	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
450	WANT (5);	698	WANT (4);
451	dec->cur += 5;	699	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	701	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	702	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	703	| ((UV)dec->cur[-1]);
456		704	}
457	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
458	WANT (9);	707	WANT (8);
459	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
460	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	715	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	716	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	717	| (((UV)dec->cur[-5]) << 32)
		718	#endif
464	| (((UV)dec->cur[-4]) << 24)	719	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	720	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	721	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	722	| ((UV)dec->cur[-1]);
468		723	}
469	default:	724	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		726
473	fail:	727	fail:
474	return 0;	728	return 0;
475	}	729	}
476		730
…		…
481	{	735	{
482	AV *av = newAV ();	736	AV *av = newAV ();
483		737
484	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
485		739
486	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	741	{
488	++dec->cur;	742	++dec->cur;
489		743
490	for (;;)	744	for (;;)
491	{	745	{
492	WANT (1);	746	WANT (1);
493		747
494	if (*dec->cur == (0xe0 | 31))	748	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	749	{
496	++dec->cur;	750	++dec->cur;
497	break;	751	break;
498	}	752	}
499		753
500	av_push (av, decode_sv (dec));	754	av_push (av, decode_sv (dec));
501	}	755	}
502	}	756	}
503	else	757	else
504	{	758	{
505	int i, len = decode_uint (dec);	759	UV i, len = decode_uint (dec);
506		760
		761	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);	762	av_fill (av, len - 1);
508		763
509	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
511	}	766	}
…		…
517	SvREFCNT_dec (av);	772	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	773	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	774	return &PL_sv_undef;
520	}	775	}
521		776
		777	static void
		778	decode_he (dec_t *dec, HV *hv)
		779	{
		780	// for speed reasons, we specialcase single-string
		781	// byte or utf-8 strings as keys, but only when !stringref
		782
		783	if (ecb_expect_true (!dec->stringref))
		784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		785	{
		786	STRLEN len = decode_uint (dec);
		787	char *key = (char *)dec->cur;
		788
		789	WANT (len);
		790	dec->cur += len;
		791
		792	hv_store (hv, key, len, decode_sv (dec), 0);
		793
		794	return;
		795	}
		796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		797	{
		798	STRLEN len = decode_uint (dec);
		799	char *key = (char *)dec->cur;
		800
		801	WANT (len);
		802	dec->cur += len;
		803
		804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		807
		808	hv_store (hv, key, -len, decode_sv (dec), 0);
		809
		810	return;
		811	}
		812
		813	SV *k = decode_sv (dec);
		814	SV *v = decode_sv (dec);
		815
		816	hv_store_ent (hv, k, v, 0);
		817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
		821	}
		822
522	static SV *	823	static SV *
523	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
524	{	825	{
525	HV *hv = newHV ();	826	HV *hv = newHV ();
526		827
527	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
528		829
529	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	831	{
531	++dec->cur;	832	++dec->cur;
532		833
533	for (;;)	834	for (;;)
534	{	835	{
535	WANT (1);	836	WANT (1);
536		837
537	if (*dec->cur == (0xe0 | 31))	838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	839	{
539	++dec->cur;	840	++dec->cur;
540	break;	841	break;
541	}	842	}
542		843
543	SV *k = decode_sv (dec);	844	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	845	}
548	}	846	}
549	else	847	else
550	{	848	{
551	int len = decode_uint (dec);	849	UV pairs = decode_uint (dec);
552		850
		851	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		852
553	while (len--)	853	while (pairs--)
554	{	854	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	}	855	}
561		856
562	DEC_DEC_DEPTH;	857	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	858	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		859
720	fail:	860	fail:
721	SvREFCNT_dec (hv);	861	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	862	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	863	return &PL_sv_undef;
724	}	864	}
725		865
726	static SV *	866	static SV *
727	decode_str (dec_t *dec, int utf8)	867	decode_str (dec_t *dec, int utf8)
728	{	868	{
729	SV *sv;	869	SV *sv = 0;
730		870
731	if ((*dec->cur & 31) == 31)	871	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	872	{
		873	// indefinite length strings
733	++dec->cur;	874	++dec->cur;
734		875
		876	U8 major = *dec->cur & MAJOR_MISC;
		877
735	sv = newSVpvn ("", 0);	878	sv = newSVpvn ("", 0);
736		879
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	880	for (;;)
739	{	881	{
740	WANT (1);	882	WANT (1);
741		883
742	if (*dec->cur == (0xe0 | 31))	884	if ((*dec->cur - major) > LENGTH_EXT8)
		885	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	886	{
744	++dec->cur;	887	++dec->cur;
745	break;	888	break;
746	}	889	}
		890	else
		891	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		892
748	SV *sv2 = decode_sv (dec);	893	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	894
		895	WANT (len);
		896	sv_catpvn (sv, dec->cur, len);
		897	dec->cur += len;
750	}	898	}
751	}	899	}
752	else	900	else
753	{	901	{
754	STRLEN len = decode_uint (dec);	902	STRLEN len = decode_uint (dec);
755		903
756	WANT (len);	904	WANT (len);
757	sv = newSVpvn (dec->cur, len);	905	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	906	dec->cur += len;
		907
		908	if (ecb_expect_false (dec->stringref)
		909	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		910	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	911	}
760		912
761	if (utf8)	913	if (utf8)
		914	{
		915	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		916	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		917	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		918
762	SvUTF8_on (sv);	919	SvUTF8_on (sv);
		920	}
763		921
764	return sv;	922	return sv;
765		923
766	fail:	924	fail:
		925	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	926	return &PL_sv_undef;
768	}	927	}
769		928
770	static SV *	929	static SV *
771	decode_tagged (dec_t *dec)	930	decode_tagged (dec_t *dec)
772	{	931	{
		932	SV *sv = 0;
773	UV tag = decode_uint (dec);	933	UV tag = decode_uint (dec);
		934
		935	WANT (1);
		936
		937	switch (tag)
		938	{
		939	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	940	sv = decode_sv (dec);
		941	break;
775		942
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	943	case CBOR_TAG_INDIRECTION:
		944	sv = newRV_noinc (decode_sv (dec));
		945	break;
		946
		947	case CBOR_TAG_STRINGREF_NAMESPACE:
		948	{
		949	// do nmot use SAVETMPS/FREETMPS, as these will
		950	// erase mortalised caches, e.g. "shareable"
		951	ENTER;
		952
		953	SAVESPTR (dec->stringref);
		954	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		955
		956	sv = decode_sv (dec);
		957
		958	LEAVE;
		959	}
		960	break;
		961
		962	case CBOR_TAG_STRINGREF:
		963	{
		964	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		965	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		966
		967	UV idx = decode_uint (dec);
		968
		969	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		970	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		971
		972	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		973	}
		974	break;
		975
		976	case CBOR_TAG_VALUE_SHAREABLE:
		977	{
		978	if (ecb_expect_false (!dec->shareable))
		979	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		980
		981	if (dec->cbor.flags & F_ALLOW_CYCLES)
		982	{
		983	sv = newSV (0);
		984	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		985
		986	SV *osv = decode_sv (dec);
		987	sv_setsv (sv, osv);
		988	SvREFCNT_dec_NN (osv);
		989	}
		990	else
		991	{
		992	av_push (dec->shareable, &PL_sv_undef);
		993	int idx = AvFILLp (dec->shareable);
		994	sv = decode_sv (dec);
		995	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		996	}
		997	}
		998	break;
		999
		1000	case CBOR_TAG_VALUE_SHAREDREF:
		1001	{
		1002	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1003	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1004
		1005	UV idx = decode_uint (dec);
		1006
		1007	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1008	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1009
		1010	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1011
		1012	if (sv == &PL_sv_undef)
		1013	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1014	}
		1015	break;
		1016
		1017	case CBOR_TAG_PERL_OBJECT:
		1018	{
		1019	sv = decode_sv (dec);
		1020
		1021	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1022	ERR ("corrupted CBOR data (non-array perl object)");
		1023
		1024	AV *av = (AV *)SvRV (sv);
		1025	int len = av_len (av) + 1;
		1026	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1027
		1028	if (!stash)
		1029	ERR ("cannot decode perl-object (package does not exist)");
		1030
		1031	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1032
		1033	if (!method)
		1034	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1035
		1036	dSP;
		1037
		1038	ENTER; SAVETMPS;
		1039	PUSHMARK (SP);
		1040	EXTEND (SP, len + 1);
		1041	// we re-bless the reference to get overload and other niceties right
		1042	PUSHs (*av_fetch (av, 0, 1));
		1043	PUSHs (sv_cbor);
		1044
		1045	int i;
		1046
		1047	for (i = 1; i < len; ++i)
		1048	PUSHs (*av_fetch (av, i, 1));
		1049
		1050	PUTBACK;
		1051	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1052	SPAGAIN;
		1053
		1054	if (SvTRUE (ERRSV))
		1055	{
		1056	FREETMPS; LEAVE;
		1057	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1058	}
		1059
		1060	SvREFCNT_dec (sv);
		1061	sv = SvREFCNT_inc (POPs);
		1062
		1063	PUTBACK;
		1064
		1065	FREETMPS; LEAVE;
		1066	}
		1067	break;
		1068
		1069	default:
		1070	{
		1071	sv = decode_sv (dec);
		1072
		1073	dSP;
		1074	ENTER; SAVETMPS;
		1075	SAVESTACK_POS ();
		1076	PUSHMARK (SP);
		1077	EXTEND (SP, 2);
		1078	PUSHs (newSVuv (tag));
		1079	PUSHs (sv);
		1080
		1081	PUTBACK;
		1082	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1083	SPAGAIN;
		1084
		1085	if (SvTRUE (ERRSV))
		1086	{
		1087	FREETMPS; LEAVE;
		1088	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1089	}
		1090
		1091	if (count)
		1092	{
		1093	SvREFCNT_dec (sv);
		1094	sv = SvREFCNT_inc (POPs);
		1095	}
		1096	else
		1097	{
		1098	AV *av = newAV ();
		1099	av_push (av, newSVuv (tag));
		1100	av_push (av, sv);
		1101
		1102	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1103	? cbor_tagged_stash
		1104	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1105	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1106	}
		1107
		1108	PUTBACK;
		1109
		1110	FREETMPS; LEAVE;
		1111	}
		1112	break;
		1113	}
		1114
777	return sv;	1115	return sv;
778		1116
779	AV *av = newAV ();	1117	fail:
780	av_push (av, newSVuv (tag));	1118	SvREFCNT_dec (sv);
781	av_push (av, sv);	1119	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1120	}
784		1121
785	static SV *	1122	static SV *
786	decode_sv (dec_t *dec)	1123	decode_sv (dec_t *dec)
787	{	1124	{
788	WANT (1);	1125	WANT (1);
789		1126
790	switch (*dec->cur >> 5)	1127	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1128	{
792	case 0: // unsigned int	1129	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1130	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1131	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1132	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1133	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1134	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1135	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1136
800	return decode_str (dec, 1);	1137	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)	1138	switch (*dec->cur++ & MINOR_MASK)
809	{	1139	{
810	case 20:	1140	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1141	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1142	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1143	#endif
814	return newSVsv (cbor_false);	1144	return newSVsv (types_false);
815	case 21:	1145	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1146	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1147	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1148	#endif
819	return newSVsv (cbor_true);	1149	return newSVsv (types_true);
820	case 22:	1150	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1151	return newSVsv (&PL_sv_undef);
		1152	case SIMPLE_UNDEF:
		1153	#if CBOR_SLOW
		1154	types_error = get_bool ("Types::Serialiser::error");
		1155	#endif
		1156	return newSVsv (types_error);
822		1157
823	case 25:	1158	case MISC_FLOAT16:
824	{	1159	{
825	WANT (2);	1160	WANT (2);
826		1161
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1162	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1163	dec->cur += 2;
829		1164
830	return newSVnv (ecb_binary16_to_float (fp));	1165	return newSVnv (ecb_binary16_to_float (fp));
831	}	1166	}
832		1167
833	case 26:	1168	case MISC_FLOAT32:
834	{	1169	{
835	uint32_t fp;	1170	uint32_t fp;
836	WANT (4);	1171	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1172	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1173	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1176	fp = ecb_bswap32 (fp);
842		1177
843	return newSVnv (ecb_binary32_to_float (fp));	1178	return newSVnv (ecb_binary32_to_float (fp));
844	}	1179	}
845		1180
846	case 27:	1181	case MISC_FLOAT64:
847	{	1182	{
848	uint64_t fp;	1183	uint64_t fp;
849	WANT (8);	1184	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1185	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1186	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1189	fp = ecb_bswap64 (fp);
855		1190
856	return newSVnv (ecb_binary64_to_double (fp));	1191	return newSVnv (ecb_binary64_to_double (fp));
857	}	1192	}
858		1193
859	// 0..19 unassigned	1194	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1195	// 24 reserved + unassigned simple (reserved values are not encodable)
		1196	// 28-30 unassigned misc
		1197	// 31 break code
861	default:	1198	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1199	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1200	}
864		1201
865	break;	1202	break;
866	}	1203	}
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		1204
924	fail:	1205	fail:
925	return &PL_sv_undef;	1206	return &PL_sv_undef;
926	}	1207	}
927		1208
928	static SV *	1209	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1210	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1211	{
931	dec_t dec;	1212	dec_t dec = { 0 };
932	SV *sv;	1213	SV *sv;
		1214	STRLEN len;
		1215	char *data = SvPVbyte (string, len);
933		1216
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)	1217	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",	1218	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);	1219	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1220
969	dec.cbor = *cbor;	1221	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1222	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1223	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		1224
978	sv = decode_sv (&dec);	1225	sv = decode_sv (&dec);
979		1226
980	if (offset_return)	1227	if (offset_return)
981	*offset_return = dec.cur;	1228	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1231	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1232	dec.err = "garbage after CBOR object";
986		1233
987	if (dec.err)	1234	if (dec.err)
988	{	1235	{
		1236	if (dec.shareable)
		1237	{
		1238	// need to break cyclic links, which whould all be in shareable
		1239	int i;
		1240	SV **svp;
		1241
		1242	for (i = av_len (dec.shareable) + 1; i--; )
		1243	if ((svp = av_fetch (dec.shareable, i, 0)))
		1244	sv_setsv (*svp, &PL_sv_undef);
		1245	}
		1246
989	SvREFCNT_dec (sv);	1247	SvREFCNT_dec (sv);
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1248	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1249	}
992		1250
993	sv = sv_2mortal (sv);	1251	sv = sv_2mortal (sv);
994		1252
995	return sv;	1253	return sv;
996	}	1254	}
997		1255
		1256	/////////////////////////////////////////////////////////////////////////////
		1257	// incremental parser
		1258
		1259	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1260
		1261	// returns 0 for notyet, 1 for success or error
		1262	static int
		1263	incr_parse (CBOR *self, SV *cborstr)
		1264	{
		1265	STRLEN cur;
		1266	SvPV (cborstr, cur);
		1267
		1268	while (ecb_expect_true (self->incr_need <= cur))
		1269	{
		1270	// table of integer count bytes
		1271	static I8 incr_len[MINOR_MASK + 1] = {
		1272	0, 0, 0, 0, 0, 0, 0, 0,
		1273	0, 0, 0, 0, 0, 0, 0, 0,
		1274	0, 0, 0, 0, 0, 0, 0, 0,
		1275	1, 2, 4, 8,-1,-1,-1,-2
		1276	};
		1277
		1278	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1279	U8 m = *p & MINOR_MASK;
		1280	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1281	I8 ilen = incr_len[m];
		1282
		1283	self->incr_need = self->incr_pos + 1;
		1284
		1285	if (ecb_expect_false (ilen < 0))
		1286	{
		1287	if (m != MINOR_INDEF)
		1288	return 1; // error
		1289
		1290	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1291	{
		1292	if (count >= 0)
		1293	return 1; // error
		1294
		1295	count = 1;
		1296	}
		1297	else
		1298	{
		1299	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1300	count = -1;
		1301	}
		1302	}
		1303	else
		1304	{
		1305	self->incr_need += ilen;
		1306	if (ecb_expect_false (self->incr_need > cur))
		1307	return 0;
		1308
		1309	int major = *p >> MAJOR_SHIFT;
		1310
		1311	switch (major)
		1312	{
		1313	case MAJOR_TAG >> MAJOR_SHIFT:
		1314	++count; // tags merely prefix another value
		1315	break;
		1316
		1317	case MAJOR_BYTES >> MAJOR_SHIFT:
		1318	case MAJOR_TEXT >> MAJOR_SHIFT:
		1319	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1320	case MAJOR_MAP >> MAJOR_SHIFT:
		1321	{
		1322	UV len;
		1323
		1324	if (ecb_expect_false (ilen))
		1325	{
		1326	len = 0;
		1327
		1328	do {
		1329	len = (len << 8) | *++p;
		1330	} while (--ilen);
		1331	}
		1332	else
		1333	len = m;
		1334
		1335	switch (major)
		1336	{
		1337	case MAJOR_BYTES >> MAJOR_SHIFT:
		1338	case MAJOR_TEXT >> MAJOR_SHIFT:
		1339	self->incr_need += len;
		1340	if (ecb_expect_false (self->incr_need > cur))
		1341	return 0;
		1342
		1343	break;
		1344
		1345	case MAJOR_MAP >> MAJOR_SHIFT:
		1346	len <<= 1;
		1347	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1348	if (len)
		1349	{
		1350	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1351	count = len + 1;
		1352	}
		1353	break;
		1354	}
		1355	}
		1356	}
		1357	}
		1358
		1359	self->incr_pos = self->incr_need;
		1360
		1361	if (count > 0)
		1362	{
		1363	while (!--count)
		1364	{
		1365	if (!AvFILLp (self->incr_count))
		1366	return 1; // done
		1367
		1368	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1369	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1370	}
		1371
		1372	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1373	}
		1374	}
		1375
		1376	return 0;
		1377	}
		1378
		1379
998	/////////////////////////////////////////////////////////////////////////////	1380	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1381	// XS interface functions
1000		1382
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1383	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1384
1003	BOOT:	1385	BOOT:
1004	{	1386	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1387	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1388	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1389
1008	cbor_true = get_bool ("CBOR::XS::true");	1390	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1391	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1392
		1393	types_true = get_bool ("Types::Serialiser::true" );
		1394	types_false = get_bool ("Types::Serialiser::false");
		1395	types_error = get_bool ("Types::Serialiser::error");
		1396
		1397	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1398
		1399	sv_cbor = newSVpv ("CBOR", 0);
		1400	SvREADONLY_on (sv_cbor);
		1401
		1402	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1010	}	1403	}
1011		1404
1012	PROTOTYPES: DISABLE	1405	PROTOTYPES: DISABLE
1013		1406
1014	void CLONE (...)	1407	void CLONE (...)
1015	CODE:	1408	CODE:
1016	cbor_stash = 0;	1409	cbor_stash = 0;
		1410	cbor_tagged_stash = 0;
		1411	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1412	types_boolean_stash = 0;
1018		1413
1019	void new (char *klass)	1414	void new (char *klass)
1020	PPCODE:	1415	PPCODE:
1021	{	1416	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1417	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1425
1031	void shrink (CBOR *self, int enable = 1)	1426	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1427	ALIAS:
1033	shrink = F_SHRINK	1428	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1429	allow_unknown = F_ALLOW_UNKNOWN
		1430	allow_sharing = F_ALLOW_SHARING
		1431	allow_cycles = F_ALLOW_CYCLES
		1432	pack_strings = F_PACK_STRINGS
		1433	text_keys = F_TEXT_KEYS
		1434	text_strings = F_TEXT_STRINGS
		1435	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1436	PPCODE:
1036	{	1437	{
1037	if (enable)	1438	if (enable)
1038	self->flags |= ix;	1439	self->flags |= ix;
1039	else	1440	else
…		…
1044		1445
1045	void get_shrink (CBOR *self)	1446	void get_shrink (CBOR *self)
1046	ALIAS:	1447	ALIAS:
1047	get_shrink = F_SHRINK	1448	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1449	get_allow_unknown = F_ALLOW_UNKNOWN
		1450	get_allow_sharing = F_ALLOW_SHARING
		1451	get_allow_cycles = F_ALLOW_CYCLES
		1452	get_pack_strings = F_PACK_STRINGS
		1453	get_text_keys = F_TEXT_KEYS
		1454	get_text_strings = F_TEXT_STRINGS
		1455	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1456	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1457	XPUSHs (boolSV (self->flags & ix));
1051		1458
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1459	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1460	PPCODE:
…		…
1069	CODE:	1476	CODE:
1070	RETVAL = self->max_size;	1477	RETVAL = self->max_size;
1071	OUTPUT:	1478	OUTPUT:
1072	RETVAL	1479	RETVAL
1073		1480
1074	#if 0 //TODO	1481	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1482	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1483	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1484	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1485	XPUSHs (ST (0));
1083	}
1084		1486
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1487	SV *get_filter (CBOR *self)
1086	PPCODE:	1488	CODE:
1087	{	1489	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1490	OUTPUT:
1089	self->cb_sk_object = newHV ();	1491	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		1492
1109	void encode (CBOR *self, SV *scalar)	1493	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1494	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1495	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1496	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1509	EXTEND (SP, 2);
1126	PUSHs (sv);	1510	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1511	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1512	}
1129		1513
		1514	void incr_parse (CBOR *self, SV *cborstr)
		1515	ALIAS:
		1516	incr_parse_multiple = 1
		1517	PPCODE:
		1518	{
		1519	if (SvUTF8 (cborstr))
		1520	sv_utf8_downgrade (cborstr, 0);
		1521
		1522	if (!self->incr_count)
		1523	{
		1524	self->incr_count = newAV ();
		1525	self->incr_pos = 0;
		1526	self->incr_need = 1;
		1527
		1528	av_push (self->incr_count, newSViv (1));
		1529	}
		1530
		1531	do
		1532	{
		1533	if (!incr_parse (self, cborstr))
		1534	{
		1535	if (self->incr_need > self->max_size && self->max_size)
		1536	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1537	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1538
		1539	break;
		1540	}
		1541
		1542	SV *sv;
		1543	char *offset;
		1544
		1545	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1546	XPUSHs (sv);
		1547
		1548	sv_chop (cborstr, offset);
		1549
		1550	av_clear (self->incr_count);
		1551	av_push (self->incr_count, newSViv (1));
		1552
		1553	self->incr_pos = 0;
		1554	self->incr_need = self->incr_pos + 1;
		1555	}
		1556	while (ix);
		1557	}
		1558
		1559	void incr_reset (CBOR *self)
		1560	CODE:
		1561	{
		1562	SvREFCNT_dec (self->incr_count);
		1563	self->incr_count = 0;
		1564	}
		1565
1130	void DESTROY (CBOR *self)	1566	void DESTROY (CBOR *self)
1131	CODE:	1567	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1568	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1569
1135	PROTOTYPES: ENABLE	1570	PROTOTYPES: ENABLE
1136		1571
1137	void encode_cbor (SV *scalar)	1572	void encode_cbor (SV *scalar)
		1573	ALIAS:
		1574	encode_cbor = 0
		1575	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1576	PPCODE:
1139	{	1577	{
1140	CBOR cbor;	1578	CBOR cbor;
1141	cbor_init (&cbor);	1579	cbor_init (&cbor);
		1580	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1581	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1582	XPUSHs (scalar);
1144	}	1583	}
1145		1584
1146	void decode_cbor (SV *cborstr)	1585	void decode_cbor (SV *cborstr)

Diff Legend

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