[ViewVC] Diff of: cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
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	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
13		66
14	// known tags	67	// known tags
15	enum cbor_tag	68	enum cbor_tag
16	{	69	{
17	// inofficial extensions (pending iana registration)	70	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		78
21	// rfc7049	79	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
28		86
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		91
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		97
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	99	};
42		100
43	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
		103	#define F_ALLOW_SHARING 0x00000004UL
		104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
		106	#define F_PACK_STRINGS 0x00000020UL
		107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
45		110
46	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
47		112
48	#define SB do {	113	#define SB do {
49	#define SE } while (0)	114	#define SE } while (0)
…		…
60	#else	125	#else
61	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
63	#endif	128	#endif
64		129
65	static HV cbor_stash, cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
66	static SV cbor_true, cbor_false;	131	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
67		132
68	typedef struct {	133	typedef struct {
69	U32 flags;	134	U32 flags;
70	U32 max_depth;	135	U32 max_depth;
71	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
		138
		139	// for the incremental parser
		140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	143	} CBOR;
73		144
74	ecb_inline void	145	ecb_inline void
75	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
76	{	147	{
77	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
79	}	157	}
80		158
81	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	160	// utility functions
83		161
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	184	#endif
107	}	185	}
108	}	186	}
109		187
110	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
111	// fp hell	189	ecb_inline int
		190	minimum_string_length (UV idx)
		191	{
112		192
113	//TODO	193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
114		199
115	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
116	// encoder	201	// encoder
117		202
118	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
123	SV *sv; // result scalar	208	SV *sv; // result scalar
124	CBOR cbor;	209	CBOR cbor;
125	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
126	} enc_t;	215	} enc_t;
127		216
128	ecb_inline void	217	ecb_inline void
129	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
130	{	219	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	221	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
147	static void	236	static void
148	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
149	{	238	{
150	need (enc, 9);	239	need (enc, 9);
151		240
152	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major \| len;	242	*enc->cur++ = major \| len;
154	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
155	{	244	{
156	*enc->cur++ = major \| 24;	245	*enc->cur++ = major \| LENGTH_EXT1;
157	*enc->cur++ = len;	246	*enc->cur++ = len;
158	}	247	}
159	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
160	{	249	{
161	*enc->cur++ = major \| 25;	250	*enc->cur++ = major \| LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	252	*enc->cur++ = len;
164	}	253	}
165	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
166	{	255	{
167	*enc->cur++ = major \| 26;	256	*enc->cur++ = major \| LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	260	*enc->cur++ = len;
172	}	261	}
173	else	262	else
174	{	263	{
175	*enc->cur++ = major \| 27;	264	*enc->cur++ = major \| LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	272	*enc->cur++ = len;
184	}	273	}
185	}	274	}
186		275
187	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	284	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
189	{	285	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	286	STRLEN ulen = len;
		287	U8 p, pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	enc->cur++ = p;
		298	else
		299	{
		300	enc->cur++ = 0xc0 + (p >> 6);
		301	enc->cur++ = 0x80 + (p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	316	need (enc, len);
192	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
193	enc->cur += len;	318	enc->cur += len;
194	}	319	}
195		320
		321	ecb_inline void
		322	encode_strref (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		323	{
		324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		325	{
		326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		327
		328	if (SvOK (*svp))
		329	{
		330	// already registered, use stringref
		331	encode_tag (enc, CBOR_TAG_STRINGREF);
		332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		333	return;
		334	}
		335	else if (len >= minimum_string_length (enc->stringref_idx))
		336	{
		337	// register only
		338	sv_setuv (*svp, enc->stringref_idx);
		339	++enc->stringref_idx;
		340	}
		341	}
		342
		343	encode_str (enc, upgrade_utf8, utf8, str, len);
		344	}
		345
196	static void encode_sv (enc_t enc, SV sv);	346	static void encode_sv (enc_t enc, SV sv);
197		347
198	static void	348	static void
199	encode_av (enc_t enc, AV av)	349	encode_av (enc_t enc, AV av)
200	{	350	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
205		355
206	++enc->depth;	356	++enc->depth;
207		357
208	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		359
		360	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
211	{	362	{
212	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
215		372
216	--enc->depth;	373	--enc->depth;
217	}	374	}
218		375
219	static void	376	static void
…		…
228		385
229	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
231		388
232	if (mg)	389	if (mg)
233	encode_ch (enc, 0xa0 \| 31);	390	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
234	else	391	else
235	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
236		393
237	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
238	{	395	{
239	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
241	else	398	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS \| F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		400
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	402	}
246		403
247	if (mg)	404	if (mg)
248	encode_ch (enc, 0xe0 \| 31);	405	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
249		406
250	--enc->depth;	407	--enc->depth;
251	}	408	}
252		409
253	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
254	static void	411	static void
255	encode_rv (enc_t enc, SV sv)	412	encode_rv (enc_t enc, SV sv)
256	{	413	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
		415
260	svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
261		417
262	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
263	{	419	{
264	HV *boolean_stash = !CBOR_SLOW \|\| cbor_boolean_stash	420	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? cbor_boolean_stash	421	? types_boolean_stash
266	: gv_stashpv ("CBOR::XS::Boolean", 1);	422	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		423	HV *error_stash = !CBOR_SLOW \|\| types_error_stash
		424	? types_error_stash
		425	: gv_stashpv ("Types::Serialiser::Error", 1);
267	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
268	? cbor_tagged_stash	427	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		429
		430	HV *stash = SvSTASH (sv);
		431
271	if (SvSTASH (sv) == boolean_stash)	432	if (stash == boolean_stash)
272	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		435	return;
		436	}
		437	else if (stash == error_stash)
		438	{
		439	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		440	return;
		441	}
273	else if (SvSTASH (sv) == tagged_stash)	442	else if (stash == tagged_stash)
274	{	443	{
275	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		446
278	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
279	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	448	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		459
		460	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
		463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
280	}	467	}
281	else	468	else
282	{	469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		485	{
		486	dSP;
		487
		488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
283	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
284	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
285
286	if (to_cbor)
287	{
288	dSP;
289
290	ENTER; SAVETMPS; PUSHMARK (SP);
291	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		492
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	493	PUTBACK;
		494	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	495	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	496	SPAGAIN;
297		497
298	// catch this surprisingly common error	498	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	499	if (SvROK (TOPs) && SvRV (TOPs) == sv)
300	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	500	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
301		501
302	sv = POPs;	502	encode_sv (enc, POPs);
		503
303	PUTBACK;	504	PUTBACK;
304		505
305	encode_sv (enc, sv);
306
307	FREETMPS; LEAVE;	506	FREETMPS; LEAVE;
308	}	507	}
		508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		509	{
		510	dSP;
		511
		512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
		515	EXTEND (SP, 2);
		516	// we re-bless the reference to get overload and other niceties right
		517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		518	PUSHs (sv_cbor);
		519
		520	PUTBACK;
		521	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		522	SPAGAIN;
		523
		524	// catch this surprisingly common error
		525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		527
		528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		529	encode_uint (enc, MAJOR_ARRAY, count + 1);
		530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		531
		532	while (count)
		533	encode_sv (enc, SP[1 - count--]);
		534
		535	PUTBACK;
		536
		537	FREETMPS; LEAVE;
		538	}
309	else	539	else
310	croak ("encountered object '%s', but no TO_CBOR method available on it",	540	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	542	}
314	else if (svt == SVt_PVHV)	543	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	544	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	545	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	546	encode_av (enc, (AV *)sv);
318	else if (svt < SVt_PVAV)
319	{
320	STRLEN len = 0;
321	char *pv = svt ? SvPV (sv, len) : 0;
322
323	if (len == 1 && *pv == '1')
324	encode_ch (enc, 0xe0 \| 21);
325	else if (len == 1 && *pv == '0')
326	encode_ch (enc, 0xe0 \| 20);
327	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
328	encode_ch (enc, 0xe0 \| 23);
329	else
330	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
331	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
332	}
333	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
334	encode_ch (enc, 0xe0 \| 23);
335	else	547	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	548	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	549	encode_tag (enc, CBOR_TAG_INDIRECTION);
		550	encode_sv (enc, sv);
		551	}
338	}	552	}
339		553
340	static void	554	static void
341	encode_nv (enc_t enc, SV sv)	555	encode_nv (enc_t enc, SV sv)
342	{	556	{
343	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
344		558
345	need (enc, 9);	559	need (enc, 9);
346		560
347	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	563	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
351	{	565	{
352	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
353		567
354	*enc->cur++ = 0xe0 \| 26;	568	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
355		569
356	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
357	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
358		572
359	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
361	}	575	}
362	else	576	else
363	{	577	{
364	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
365		579
366	*enc->cur++ = 0xe0 \| 27;	580	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
367		581
368	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
369	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
370		584
371	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
380		594
381	if (SvPOKp (sv))	595	if (SvPOKp (sv))
382	{	596	{
383	STRLEN len;	597	STRLEN len;
384	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
386	}	600	}
387	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	602	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
390	{	604	{
391	if (SvIsUV (sv))	605	if (SvIsUV (sv))
392	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
393	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
394	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
395	else	609	else
396	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
397	}	611	}
398	else if (SvROK (sv))	612	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	614	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 \| 22);	615	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 \| 23);	617	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
404	else	618	else
405	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	621	}
408		622
409	static SV *	623	static SV *
410	encode_cbor (SV scalar, CBOR cbor)	624	encode_cbor (SV scalar, CBOR cbor)
411	{	625	{
412	enc_t enc;	626	enc_t enc = { 0 };
413		627
414	enc.cbor = *cbor;	628	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		632
420	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
		634
		635	if (cbor->flags & F_PACK_STRINGS)
		636	{
		637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		638	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		639	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		640	}
		641
421	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
422		643
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	645	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
425		646
…		…
439	U8 *end; // end of input string	660	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
441	CBOR cbor;	662	CBOR cbor;
442	U32 depth; // recursion depth	663	U32 depth; // recursion depth
443	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
		665	AV *shareable;
		666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
444	} dec_t;	669	} dec_t;
445		670
446	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
447		678
448	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
449		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t dec, const char reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
450	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
451	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
452		715
453	static UV	716	static UV
454	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
455	{	718	{
456	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
457	{	720	++dec->cur;
458	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
459	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
460	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
461	return *dec->cur++ & 31;
462		721
463	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
464	WANT (2);	726	WANT (1);
465	dec->cur += 2;	727	dec->cur += 1;
466	return dec->cur[-1];	728	return dec->cur[-1];
467		729	}
468	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
469	WANT (3);	732	WANT (2);
470	dec->cur += 3;	733	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
472	\| ((UV)dec->cur[-1]);	735	\| ((UV)dec->cur[-1]);
473		736	}
474	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
475	WANT (5);	739	WANT (4);
476	dec->cur += 5;	740	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
478	\| (((UV)dec->cur[-3]) << 16)	742	\| (((UV)dec->cur[-3]) << 16)
479	\| (((UV)dec->cur[-2]) << 8)	743	\| (((UV)dec->cur[-2]) << 8)
480	\| ((UV)dec->cur[-1]);	744	\| ((UV)dec->cur[-1]);
481		745	}
482	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
483	WANT (9);	748	WANT (8);
484	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
485	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
486	\| (((UV)dec->cur[-7]) << 48)	756	\| (((UV)dec->cur[-7]) << 48)
487	\| (((UV)dec->cur[-6]) << 40)	757	\| (((UV)dec->cur[-6]) << 40)
488	\| (((UV)dec->cur[-5]) << 32)	758	\| (((UV)dec->cur[-5]) << 32)
		759	#endif
489	\| (((UV)dec->cur[-4]) << 24)	760	\| (((UV)dec->cur[-4]) << 24)
490	\| (((UV)dec->cur[-3]) << 16)	761	\| (((UV)dec->cur[-3]) << 16)
491	\| (((UV)dec->cur[-2]) << 8)	762	\| (((UV)dec->cur[-2]) << 8)
492	\| ((UV)dec->cur[-1]);	763	\| ((UV)dec->cur[-1]);
493		764	}
494	default:	765	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		767
498	fail:	768	fail:
499	return 0;	769	return 0;
500	}	770	}
501		771
…		…
506	{	776	{
507	AV *av = newAV ();	777	AV *av = newAV ();
508		778
509	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
510		780
511	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
512	{	782	{
513	++dec->cur;	783	++dec->cur;
514		784
515	for (;;)	785	for (;;)
516	{	786	{
517	WANT (1);	787	WANT (1);
518		788
519	if (*dec->cur == (0xe0 \| 31))	789	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
520	{	790	{
521	++dec->cur;	791	++dec->cur;
522	break;	792	break;
523	}	793	}
524		794
525	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
526	}	796	}
527	}	797	}
528	else	798	else
529	{	799	{
530	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
531		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
532	av_fill (av, len - 1);	803	av_fill (av, len - 1);
533		804
534	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
536	}	807	}
…		…
542	SvREFCNT_dec (av);	813	SvREFCNT_dec (av);
543	DEC_DEC_DEPTH;	814	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	815	return &PL_sv_undef;
545	}	816	}
546		817
		818	static void
		819	decode_he (dec_t dec, HV hv)
		820	{
		821	// for speed reasons, we specialcase single-string
		822	// byte or utf-8 strings as keys, but only when !stringref
		823
		824	if (ecb_expect_true (!dec->stringref))
		825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		826	{
		827	STRLEN len = decode_uint (dec);
		828	char key = (char )dec->cur;
		829
		830	WANT (len);
		831	dec->cur += len;
		832
		833	hv_store (hv, key, len, decode_sv (dec), 0);
		834
		835	return;
		836	}
		837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		838	{
		839	STRLEN len = decode_uint (dec);
		840	char key = (char )dec->cur;
		841
		842	WANT (len);
		843	dec->cur += len;
		844
		845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		848
		849	hv_store (hv, key, -len, decode_sv (dec), 0);
		850
		851	return;
		852	}
		853
		854	SV *k = decode_sv (dec);
		855	SV *v = decode_sv (dec);
		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID \| G_DISCARD \| G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
		885	hv_store_ent (hv, k, v, 0);
		886	SvREFCNT_dec (k);
		887
		888	fail:
		889	;
		890	}
		891
547	static SV *	892	static SV *
548	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
549	{	894	{
550	HV *hv = newHV ();	895	HV *hv = newHV ();
551		896
552	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
553		898
554	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
555	{	900	{
556	++dec->cur;	901	++dec->cur;
557		902
558	for (;;)	903	for (;;)
559	{	904	{
560	WANT (1);	905	WANT (1);
561		906
562	if (*dec->cur == (0xe0 \| 31))	907	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
563	{	908	{
564	++dec->cur;	909	++dec->cur;
565	break;	910	break;
566	}	911	}
567		912
568	SV *k = decode_sv (dec);	913	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	914	}
573	}	915	}
574	else	916	else
575	{	917	{
576	int len = decode_uint (dec);	918	UV pairs = decode_uint (dec);
577		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		921
578	while (len--)	922	while (pairs--)
579	{	923	decode_he (dec, hv);
580	SV *k = decode_sv (dec);
581	SV *v = decode_sv (dec);
582
583	hv_store_ent (hv, k, v, 0);
584	}
585	}	924	}
586		925
587	DEC_DEC_DEPTH;	926	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
589		928
…		…
596	static SV *	935	static SV *
597	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
598	{	937	{
599	SV *sv = 0;	938	SV *sv = 0;
600		939
601	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
602	{	941	{
		942	// indefinite length strings
603	++dec->cur;	943	++dec->cur;
604		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
605	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
606		948
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	949	for (;;)
609	{	950	{
610	WANT (1);	951	WANT (1);
611		952
612	if (*dec->cur == (0xe0 \| 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
613	{	955	{
614	++dec->cur;	956	++dec->cur;
615	break;	957	break;
616	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		961
618	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
619	}	967	}
620	}	968	}
621	else	969	else
622	{	970	{
623	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
624		972
625	WANT (len);	973	WANT (len);
626	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
627	dec->cur += len;	975	dec->cur += len;
		976
		977	if (ecb_expect_false (dec->stringref)
		978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
628	}	980	}
629		981
630	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
631	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
632		990
633	return sv;	991	return sv;
634		992
635	fail:	993	fail:
636	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
638	}	996	}
639		997
640	static SV *	998	static SV *
641	decode_tagged (dec_t *dec)	999	decode_tagged (dec_t *dec)
642	{	1000	{
		1001	SV *sv = 0;
643	UV tag = decode_uint (dec);	1002	UV tag = decode_uint (dec);
		1003
		1004	WANT (1);
		1005
		1006	switch (tag)
		1007	{
		1008	case CBOR_TAG_MAGIC:
644	SV *sv = decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
645		1011
646	if (tag == CBOR_TAG_MAGIC)	1012	case CBOR_TAG_INDIRECTION:
647	return sv;	1013	sv = newRV_noinc (decode_sv (dec));
		1014	break;
648		1015
649	if (tag == CBOR_TAG_PERL_OBJECT)	1016	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
		1020	ENTER;
		1021
		1022	SAVESPTR (dec->stringref);
		1023	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		1024
		1025	sv = decode_sv (dec);
		1026
		1027	LEAVE;
		1028	}
		1029	break;
		1030
		1031	case CBOR_TAG_STRINGREF:
		1032	{
		1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1035
		1036	UV idx = decode_uint (dec);
		1037
		1038	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		1039	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1040
		1041	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1042	}
		1043	break;
		1044
		1045	case CBOR_TAG_VALUE_SHAREABLE:
		1046	{
		1047	if (ecb_expect_false (!dec->shareable))
		1048	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
		1052	sv = newSV (0);
		1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1054
		1055	SV *osv = decode_sv (dec);
		1056	sv_setsv (sv, osv);
		1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
		1066	}
		1067	break;
		1068
		1069	case CBOR_TAG_VALUE_SHAREDREF:
		1070	{
		1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1073
		1074	UV idx = decode_uint (dec);
		1075
		1076	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1078
		1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1083	}
		1084	break;
		1085
		1086	case CBOR_TAG_PERL_OBJECT:
		1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
		1091	sv = decode_sv (dec);
		1092
651	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	1094	ERR ("corrupted CBOR data (non-array perl object)");
		1095
		1096	AV av = (AV )SvRV (sv);
		1097	int len = av_len (av) + 1;
		1098	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		1099
		1100	if (!stash)
		1101	ERR ("cannot decode perl-object (package does not exist)");
		1102
		1103	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1104
		1105	if (!method)
		1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1107
		1108	dSP;
		1109
		1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
		1112	EXTEND (SP, len + 1);
		1113	// we re-bless the reference to get overload and other niceties right
		1114	PUSHs (*av_fetch (av, 0, 1));
		1115	PUSHs (sv_cbor);
		1116
		1117	int i;
		1118
		1119	for (i = 1; i < len; ++i)
		1120	PUSHs (*av_fetch (av, i, 1));
		1121
		1122	PUTBACK;
		1123	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		1124	SPAGAIN;
		1125
		1126	if (SvTRUE (ERRSV))
		1127	{
		1128	FREETMPS; LEAVE;
		1129	ERR_ERRSV;
		1130	}
		1131
		1132	SvREFCNT_dec (sv);
		1133	sv = SvREFCNT_inc (POPs);
		1134
		1135	PUTBACK;
		1136
		1137	FREETMPS; LEAVE;
653		1138	}
654	// TODO	1139	break;
655	}
656		1140
		1141	default:
		1142	filter:
		1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
		1146	sv = decode_sv (dec);
		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
657	AV *av = newAV ();	1175	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
659	av_push (av, sv);	1177	av_push (av, sv);
660		1178
661	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
662	? cbor_tagged_stash	1180	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
		1188	}
		1189	break;
		1190	}
		1191
		1192	return sv;
666		1193
667	fail:	1194	fail:
668	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1196	return &PL_sv_undef;
670	}	1197	}
…		…
672	static SV *	1199	static SV *
673	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
674	{	1201	{
675	WANT (1);	1202	WANT (1);
676		1203
677	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1205	{
679	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1213
687	case 4: // array	1214	case MAJOR_MISC >> MAJOR_SHIFT:
688	return decode_av (dec);
689	case 5: // map
690	return decode_hv (dec);
691	case 6: // tag
692	return decode_tagged (dec);
693	case 7: // misc
694	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
695	{	1216	{
696	case 20:	1217	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1218	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1219	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1220	#endif
700	return newSVsv (cbor_false);	1221	return newSVsv (types_false);
701	case 21:	1222	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1223	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1224	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1225	#endif
705	return newSVsv (cbor_true);	1226	return newSVsv (types_true);
706	case 22:	1227	case SIMPLE_NULL:
707	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
		1229	case SIMPLE_UNDEF:
		1230	#if CBOR_SLOW
		1231	types_error = get_bool ("Types::Serialiser::error");
		1232	#endif
		1233	return newSVsv (types_error);
708		1234
709	case 25:	1235	case MISC_FLOAT16:
710	{	1236	{
711	WANT (2);	1237	WANT (2);
712		1238
713	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
714	dec->cur += 2;	1240	dec->cur += 2;
715		1241
716	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
717	}	1243	}
718		1244
719	case 26:	1245	case MISC_FLOAT32:
720	{	1246	{
721	uint32_t fp;	1247	uint32_t fp;
722	WANT (4);	1248	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1250	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
728		1254
729	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
730	}	1256	}
731		1257
732	case 27:	1258	case MISC_FLOAT64:
733	{	1259	{
734	uint64_t fp;	1260	uint64_t fp;
735	WANT (8);	1261	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1263	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
741		1267
742	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
743	}	1269	}
744		1270
745	// 0..19 unassigned	1271	// 0..19 unassigned simple
746	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
747	default:	1275	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1277	}
750		1278
751	break;	1279	break;
752	}	1280	}
753		1281
…		…
756	}	1284	}
757		1285
758	static SV *	1286	static SV *
759	decode_cbor (SV string, CBOR cbor, char **offset_return)	1287	decode_cbor (SV string, CBOR cbor, char **offset_return)
760	{	1288	{
761	dec_t dec;	1289	dec_t dec = { 0 };
762	SV *sv;	1290	SV *sv;
		1291	STRLEN len;
		1292	char *data = SvPVbyte (string, len);
763		1293
764	/* work around bugs in 5.10 where manipulating magic values
765	* makes perl ignore the magic in subsequent accesses.
766	* also make a copy of non-PV values, to get them into a clean
767	* state (SvPV should do that, but it's buggy, see below).
768	*/
769	/SvGETMAGIC (string);/
770	if (SvMAGICAL (string) \|\| !SvPOK (string))
771	string = sv_2mortal (newSVsv (string));
772
773	SvUPGRADE (string, SVt_PV);
774
775	/* work around a bug in perl 5.10, which causes SvCUR to fail an
776	* assertion with -DDEBUGGING, although SvCUR is documented to
777	* return the xpv_cur field which certainly exists after upgrading.
778	* according to nicholas clark, calling SvPOK fixes this.
779	* But it doesn't fix it, so try another workaround, call SvPV_nolen
780	* and hope for the best.
781	* Damnit, SvPV_nolen still trips over yet another assertion. This
782	* assertion business is seriously broken, try yet another workaround
783	* for the broken -DDEBUGGING.
784	*/
785	{
786	#ifdef DEBUGGING
787	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
788	#else
789	STRLEN offset = SvCUR (string);
790	#endif
791
792	if (offset > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
793	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1295	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
794	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1296	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1297
799	dec.cbor = *cbor;	1298	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1299	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1300	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1301
805	sv = decode_sv (&dec);	1302	sv = decode_sv (&dec);
806		1303
807	if (offset_return)	1304	if (offset_return)
808	*offset_return = dec.cur;	1305	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
813		1310
814	if (dec.err)	1311	if (dec.err)
815	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
816	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
817	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
818	}	1330	}
819		1331
820	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
821		1333
822	return sv;	1334	return sv;
823	}	1335	}
824		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR self, SV cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) \| *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
825	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1462	// XS interface functions
827		1463
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1465
830	BOOT:	1466	BOOT:
831	{	1467	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1468	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
833	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
834	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1469	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1470
836	cbor_true = get_bool ("CBOR::XS::true");	1471	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	cbor_false = get_bool ("CBOR::XS::false");	1472	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1473
		1474	types_true = get_bool ("Types::Serialiser::true" );
		1475	types_false = get_bool ("Types::Serialiser::false");
		1476	types_error = get_bool ("Types::Serialiser::error");
		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
		1480	sv_cbor = newSVpv ("CBOR", 0);
		1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
838	}	1484	}
839		1485
840	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
841		1487
842	void CLONE (...)	1488	void CLONE (...)
843	CODE:	1489	CODE:
844	cbor_stash = 0;	1490	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1491	cbor_tagged_stash = 0;
		1492	types_error_stash = 0;
		1493	types_boolean_stash = 0;
847		1494
848	void new (char *klass)	1495	void new (char *klass)
849	PPCODE:	1496	PPCODE:
850	{	1497	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1498	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1506
860	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1508	ALIAS:
862	shrink = F_SHRINK	1509	shrink = F_SHRINK
863	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
		1511	allow_sharing = F_ALLOW_SHARING
		1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
		1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
864	PPCODE:	1518	PPCODE:
865	{	1519	{
866	if (enable)	1520	if (enable)
867	self->flags \|= ix;	1521	self->flags \|= ix;
868	else	1522	else
…		…
873		1527
874	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
875	ALIAS:	1529	ALIAS:
876	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
877	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
		1532	get_allow_sharing = F_ALLOW_SHARING
		1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
		1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1539	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
880		1541
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1543	PPCODE:
…		…
898	CODE:	1559	CODE:
899	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
900	OUTPUT:	1561	OUTPUT:
901	RETVAL	1562	RETVAL
902		1563
903	#if 0 //TODO	1564	void filter (CBOR self, SV filter = 0)
904
905	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
906	PPCODE:	1565	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1566	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1567	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1568	XPUSHs (ST (0));
912	}
913		1569
914	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1570	SV get_filter (CBOR self)
915	PPCODE:	1571	CODE:
916	{	1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1573	OUTPUT:
918	self->cb_sk_object = newHV ();	1574	RETVAL
919
920	if (SvOK (cb))
921	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
922	else
923	{
924	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
925
926	if (!HvKEYS (self->cb_sk_object))
927	{
928	SvREFCNT_dec (self->cb_sk_object);
929	self->cb_sk_object = 0;
930	}
931	}
932
933	XPUSHs (ST (0));
934	}
935
936	#endif
937		1575
938	void encode (CBOR self, SV scalar)	1576	void encode (CBOR self, SV scalar)
939	PPCODE:	1577	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1578	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1579	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
955	PUSHs (sv);	1593	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1595	}
958		1596
959	#if 0	1597	void incr_parse (CBOR self, SV cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
960		1648
961	void DESTROY (CBOR *self)	1649	void DESTROY (CBOR *self)
962	CODE:	1650	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1651	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1652
968	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
969		1654
970	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1659	PPCODE:
972	{	1660	{
973	CBOR cbor;	1661	CBOR cbor;
974	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags \|= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1665	XPUSHs (scalar);
977	}	1666	}
978		1667
979	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs. Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC