ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.44 by root, Tue Feb 18 22:12:12 2014 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	15	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
17		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
18	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_VALIDATE_UTF8 0x00000020UL
20		106
21	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
22		108
23	#define SB do {	109	#define SB do {
24	#define SE } while (0)	110	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		111
37	#define IN_RANGE_INC(type,val,beg,end) \	112	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	113	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	114	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		115
…		…
46	#else	121	#else
47	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
49	#endif	124	#endif
50		125
51	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	126	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
52	static SV *cbor_true, *cbor_false;	127	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		128
54	typedef struct {	129	typedef struct {
55	U32 flags;	130	U32 flags;
56	U32 max_depth;	131	U32 max_depth;
57	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
58		134
59	SV *cb_object;	135	// for the incremental parser
60	HV *cb_sk_object;	136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
61	} CBOR;	139	} CBOR;
62		140
63	INLINE void	141	ecb_inline void
64	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
65	{	143	{
66	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	145	cbor->max_depth = 512;
68	}	146	}
69		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
		153	}
		154
70	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	156	// utility functions
72		157
73	INLINE SV *	158	ecb_inline SV *
74	get_bool (const char *name)	159	get_bool (const char *name)
75	{	160	{
76	SV *sv = get_sv (name, 1);	161	SV *sv = get_sv (name, 1);
77		162
78	SvREADONLY_on (sv);	163	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	164	SvREADONLY_on (SvRV (sv));
80		165
81	return sv;	166	return sv;
82	}	167	}
83		168
84	INLINE void	169	ecb_inline void
85	shrink (SV *sv)	170	shrink (SV *sv)
86	{	171	{
87	sv_utf8_downgrade (sv, 1);	172	sv_utf8_downgrade (sv, 1);
88		173
89	if (SvLEN (sv) > SvCUR (sv) + 1)	174	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	180	#endif
96	}	181	}
97	}	182	}
98		183
99	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
100	// fp hell	185	ecb_inline int
101		186	minimum_string_length (UV idx)
102	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
103		198
104	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
105	// encoder	200	// encoder
106		201
107	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
112	SV *sv; // result scalar	207	SV *sv; // result scalar
113	CBOR cbor;	208	CBOR cbor;
114	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
115	} enc_t;	214	} enc_t;
116		215
117	INLINE void	216	ecb_inline void
118	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
119	{	218	{
120	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	220	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	225	}
127	}	226	}
128		227
129	INLINE void	228	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
131	{	230	{
132	need (enc, 1);	231	need (enc, 1);
133	*enc->cur++ = ch;	232	*enc->cur++ = ch;
134	}	233	}
…		…
136	static void	235	static void
137	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
138	{	237	{
139	need (enc, 9);	238	need (enc, 9);
140		239
141	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
143	else if (len < 0x100)	242	else if (ecb_expect_true (len <= 0xffU))
144	{	243	{
145	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	245	*enc->cur++ = len;
147	}	246	}
148	else if (len < 0x10000)	247	else if (len <= 0xffffU)
149	{	248	{
150	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	251	*enc->cur++ = len;
153	}	252	}
154	else if (len < 0x100000000)	253	else if (len <= 0xffffffffU)
155	{	254	{
156	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	259	*enc->cur++ = len;
161	}	260	}
162	else if (len)	261	else
163	{	262	{
164	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	271	*enc->cur++ = len;
173	}	272	}
174	}	273	}
175		274
176	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	ecb_inline void
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	282	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	283	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	285	need (enc, len);
181	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
182	enc->cur += len;	287	enc->cur += len;
183	}	288	}
184		289
		290	static void
		291	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
185	static void encode_sv (enc_t *enc, SV *sv);	315	static void encode_sv (enc_t *enc, SV *sv);
186		316
187	static void	317	static void
188	encode_av (enc_t *enc, AV *av)	318	encode_av (enc_t *enc, AV *av)
189	{	319	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
194		324
195	++enc->depth;	325	++enc->depth;
196		326
197	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		328
199	for (i = 0; i <= len; ++i)	329	for (i = 0; i <= len; ++i)
200	{	330	{
201	SV **svp = av_fetch (av, i, 0);	331	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	332	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
217		347
218	int pairs = hv_iterinit (hv);	348	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	349	int mg = SvMAGICAL (hv);
220		350
221	if (mg)	351	if (mg)
222	encode_ch (enc, 0xa0 | 31);	352	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	353	else
224	encode_uint (enc, 0xa0, pairs);	354	encode_uint (enc, MAJOR_MAP, pairs);
225		355
226	while ((he = hv_iternext (hv)))	356	while ((he = hv_iternext (hv)))
227	{	357	{
228	if (HeKLEN (he) == HEf_SVKEY)	358	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	359	encode_sv (enc, HeSVKEY (he));
230	else	360	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	361	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		362
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	363	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	364	}
235		365
236	if (mg)	366	if (mg)
237	encode_ch (enc, 0xe0 | 31);	367	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		368
239	--enc->depth;	369	--enc->depth;
240	}	370	}
241		371
242	// encode objects, arrays and special \0=false and \1=true values.	372	// encode objects, arrays and special \0=false and \1=true values.
243	static void	373	static void
244	encode_rv (enc_t *enc, SV *sv)	374	encode_rv (enc_t *enc, SV *sv)
245	{	375	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	376	SvGETMAGIC (sv);
		377
249	svt = SvTYPE (sv);	378	svtype svt = SvTYPE (sv);
250		379
251	if (expect_false (SvOBJECT (sv)))	380	if (ecb_expect_false (SvOBJECT (sv)))
252	{	381	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	382	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	383	? types_boolean_stash
		384	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		385	HV *error_stash = !CBOR_SLOW || types_error_stash
		386	? types_error_stash
		387	: gv_stashpv ("Types::Serialiser::Error", 1);
		388	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		389	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	390	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		391
257	if (SvSTASH (sv) == stash)	392	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	393
		394	if (stash == boolean_stash)
		395	{
		396	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		397	return;
		398	}
		399	else if (stash == error_stash)
		400	{
		401	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		402	return;
		403	}
		404	else if (stash == tagged_stash)
		405	{
		406	if (svt != SVt_PVAV)
		407	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		408
		409	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		410	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		411
		412	return;
		413	}
		414	}
		415
		416	if (ecb_expect_false (SvREFCNT (sv) > 1)
		417	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		418	{
		419	if (!enc->shareable)
		420	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		421
		422	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		423
		424	if (SvOK (*svp))
		425	{
		426	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		427	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		428	return;
		429	}
259	else	430	else
260	{	431	{
261	#if 0 //TODO	432	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	433	++enc->shareable_idx;
		434	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		435	}
		436	}
		437
		438	if (ecb_expect_false (SvOBJECT (sv)))
		439	{
		440	HV *stash = SvSTASH (sv);
		441	GV *method;
		442
		443	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	444	{
		445	dSP;
		446
		447	ENTER; SAVETMPS; PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	448	// we re-bless the reference to get overload and other niceties right
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	449	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		450
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	451	PUTBACK;
		452	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	453	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	454	SPAGAIN;
278		455
279	// catch this surprisingly common error	456	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	457	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	458	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		459
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	460	encode_sv (enc, POPs);
287		461
		462	PUTBACK;
		463
288	FREETMPS; LEAVE;	464	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	465	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	466	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	467	{
		468	dSP;
		469
		470	ENTER; SAVETMPS; PUSHMARK (SP);
		471	EXTEND (SP, 2);
		472	// we re-bless the reference to get overload and other niceties right
		473	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		474	PUSHs (sv_cbor);
		475
		476	PUTBACK;
		477	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		478	SPAGAIN;
		479
		480	// catch this surprisingly common error
		481	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		482	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		483
		484	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		485	encode_uint (enc, MAJOR_ARRAY, count + 1);
		486	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		487
		488	while (count)
		489	encode_sv (enc, SP[1 - count--]);
		490
		491	PUTBACK;
		492
		493	FREETMPS; LEAVE;
		494	}
298	else	495	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	496	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	497	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	498	}
304	else if (svt == SVt_PVHV)	499	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	500	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	501	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	502	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	503	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	504	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	505	encode_tag (enc, CBOR_TAG_INDIRECTION);
		506	encode_sv (enc, sv);
		507	}
328	}	508	}
329		509
330	static void	510	static void
331	encode_nv (enc_t *enc, SV *sv)	511	encode_nv (enc_t *enc, SV *sv)
332	{	512	{
333	double nv = SvNVX (sv);	513	double nv = SvNVX (sv);
334		514
335	need (enc, 9);	515	need (enc, 9);
336		516
337	if (expect_false (nv == (U32)nv))	517	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	518	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	519	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	520	else if (ecb_expect_false (nv == (float)nv))
341	{	521	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	522	uint32_t fp = ecb_float_to_binary32 (nv);
343		523
344	*enc->cur++ = 0xe0 | 26;	524	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		525
346	if (!ecb_big_endian ())	526	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	527	fp = ecb_bswap32 (fp);
348		528
349	memcpy (enc->cur, &fp, 4);	529	memcpy (enc->cur, &fp, 4);
…		…
351	}	531	}
352	else	532	else
353	{	533	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	534	uint64_t fp = ecb_double_to_binary64 (nv);
355		535
356	*enc->cur++ = 0xe0 | 27;	536	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		537
358	if (!ecb_big_endian ())	538	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	539	fp = ecb_bswap64 (fp);
360		540
361	memcpy (enc->cur, &fp, 8);	541	memcpy (enc->cur, &fp, 8);
…		…
370		550
371	if (SvPOKp (sv))	551	if (SvPOKp (sv))
372	{	552	{
373	STRLEN len;	553	STRLEN len;
374	char *str = SvPV (sv, len);	554	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	555	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	556	}
377	else if (SvNOKp (sv))	557	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	558	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	559	else if (SvIOKp (sv))
380	{	560	{
381	if (SvIsUV (sv))	561	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	562	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	563	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	564	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	565	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	566	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	567	}
388	else if (SvROK (sv))	568	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	569	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	570	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	571	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	572	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	573	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	574	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	575	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	576	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	577	}
398		578
399	static SV *	579	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	580	encode_cbor (SV *scalar, CBOR *cbor)
401	{	581	{
402	enc_t enc;	582	enc_t enc = { };
403		583
404	enc.cbor = *cbor;	584	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	585	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	586	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	587	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		588
410	SvPOK_only (enc.sv);	589	SvPOK_only (enc.sv);
		590
		591	if (cbor->flags & F_PACK_STRINGS)
		592	{
		593	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		594	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		595	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		596	}
		597
411	encode_sv (&enc, scalar);	598	encode_sv (&enc, scalar);
412		599
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	600	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	601	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		602
…		…
429	U8 *end; // end of input string	616	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	617	const char *err; // parse error, if != 0
431	CBOR cbor;	618	CBOR cbor;
432	U32 depth; // recursion depth	619	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	620	U32 maxdepth; // recursion depth limit
		621	AV *shareable;
		622	AV *stringref;
		623	SV *decode_tagged;
434	} dec_t;	624	} dec_t;
435		625
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	626	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
437		627
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	628	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
439		629
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	630	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	631	#define DEC_DEC_DEPTH --dec->depth
442		632
443	static UV	633	static UV
444	decode_uint (dec_t *dec)	634	decode_uint (dec_t *dec)
445	{	635	{
446	switch (*dec->cur & 31)	636	U8 m = *dec->cur & MINOR_MASK;
447	{	637	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		638
453	case 24:	639	if (ecb_expect_true (m < LENGTH_EXT1))
		640	return m;
		641	else if (ecb_expect_true (m == LENGTH_EXT1))
		642	{
454	WANT (2);	643	WANT (1);
455	dec->cur += 2;	644	dec->cur += 1;
456	return dec->cur[-1];	645	return dec->cur[-1];
457		646	}
458	case 25:	647	else if (ecb_expect_true (m == LENGTH_EXT2))
		648	{
459	WANT (3);	649	WANT (2);
460	dec->cur += 3;	650	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	651	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	652	| ((UV)dec->cur[-1]);
463		653	}
464	case 26:	654	else if (ecb_expect_true (m == LENGTH_EXT4))
		655	{
465	WANT (5);	656	WANT (4);
466	dec->cur += 5;	657	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	658	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	659	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	660	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	661	| ((UV)dec->cur[-1]);
471		662	}
472	case 27:	663	else if (ecb_expect_true (m == LENGTH_EXT8))
		664	{
473	WANT (9);	665	WANT (8);
474	dec->cur += 9;	666	dec->cur += 8;
		667
		668	return
		669	#if UVSIZE < 8
		670	0
		671	#else
475	return (((UV)dec->cur[-8]) << 56)	672	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	673	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	674	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	675	| (((UV)dec->cur[-5]) << 32)
		676	#endif
479	| (((UV)dec->cur[-4]) << 24)	677	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	678	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	679	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	680	| ((UV)dec->cur[-1]);
483		681	}
484	default:	682	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	683	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		684
488	fail:	685	fail:
489	return 0;	686	return 0;
490	}	687	}
491		688
…		…
496	{	693	{
497	AV *av = newAV ();	694	AV *av = newAV ();
498		695
499	DEC_INC_DEPTH;	696	DEC_INC_DEPTH;
500		697
501	if ((*dec->cur & 31) == 31)	698	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	699	{
503	++dec->cur;	700	++dec->cur;
504		701
505	for (;;)	702	for (;;)
506	{	703	{
507	WANT (1);	704	WANT (1);
508		705
509	if (*dec->cur == 0xe0 | 31)	706	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	707	{
511	++dec->cur;	708	++dec->cur;
512	break;	709	break;
513	}	710	}
514		711
…		…
517	}	714	}
518	else	715	else
519	{	716	{
520	int i, len = decode_uint (dec);	717	int i, len = decode_uint (dec);
521		718
		719	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	720	av_fill (av, len - 1);
523		721
524	for (i = 0; i < len; ++i)	722	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	723	AvARRAY (av)[i] = decode_sv (dec);
526	}	724	}
…		…
532	SvREFCNT_dec (av);	730	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	731	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	732	return &PL_sv_undef;
535	}	733	}
536		734
		735	static void
		736	decode_he (dec_t *dec, HV *hv)
		737	{
		738	// for speed reasons, we specialcase single-string
		739	// byte or utf-8 strings as keys, but only when !stringref
		740
		741	if (ecb_expect_true (!dec->stringref))
		742	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		743	{
		744	I32 len = decode_uint (dec);
		745	char *key = (char *)dec->cur;
		746
		747	dec->cur += len;
		748
		749	hv_store (hv, key, len, decode_sv (dec), 0);
		750
		751	return;
		752	}
		753	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		754	{
		755	I32 len = decode_uint (dec);
		756	char *key = (char *)dec->cur;
		757
		758	dec->cur += len;
		759
		760	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		761	if (!is_utf8_string (key, len))
		762	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		763
		764	hv_store (hv, key, -len, decode_sv (dec), 0);
		765
		766	return;
		767	}
		768
		769	SV *k = decode_sv (dec);
		770	SV *v = decode_sv (dec);
		771
		772	hv_store_ent (hv, k, v, 0);
		773	SvREFCNT_dec (k);
		774
		775	fail:
		776	;
		777	}
		778
537	static SV *	779	static SV *
538	decode_hv (dec_t *dec)	780	decode_hv (dec_t *dec)
539	{	781	{
540	HV *hv = newHV ();	782	HV *hv = newHV ();
541		783
542	DEC_INC_DEPTH;	784	DEC_INC_DEPTH;
543		785
544	if ((*dec->cur & 31) == 31)	786	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	787	{
546	++dec->cur;	788	++dec->cur;
547		789
548	for (;;)	790	for (;;)
549	{	791	{
550	WANT (1);	792	WANT (1);
551		793
552	if (*dec->cur == 0xe0 | 31)	794	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	795	{
554	++dec->cur;	796	++dec->cur;
555	break;	797	break;
556	}	798	}
557		799
558	SV *k = decode_sv (dec);	800	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	801	}
563	}	802	}
564	else	803	else
565	{	804	{
566	int len = decode_uint (dec);	805	int pairs = decode_uint (dec);
567		806
568	while (len--)	807	while (pairs--)
569	{	808	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	809	}
576		810
577	DEC_DEC_DEPTH;	811	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	812	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		813
735	fail:	814	fail:
736	SvREFCNT_dec (hv);	815	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	817	return &PL_sv_undef;
739	}	818	}
740		819
741	static SV *	820	static SV *
742	decode_str (dec_t *dec, int utf8)	821	decode_str (dec_t *dec, int utf8)
743	{	822	{
744	SV *sv;	823	SV *sv = 0;
745		824
746	if ((*dec->cur & 31) == 31)	825	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	826	{
		827	// indefinite length strings
748	++dec->cur;	828	++dec->cur;
749		829
		830	U8 major = *dec->cur & MAJOR_MISC;
		831
750	sv = newSVpvn ("", 0);	832	sv = newSVpvn ("", 0);
751		833
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	834	for (;;)
754	{	835	{
755	WANT (1);	836	WANT (1);
756		837
757	if (*dec->cur == 0xe0 | 31)	838	if ((*dec->cur - major) > LENGTH_EXT8)
		839	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	840	{
759	++dec->cur;	841	++dec->cur;
760	break;	842	break;
761	}	843	}
		844	else
		845	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		846
763	SV *sv2 = decode_sv (dec);	847	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	848
		849	WANT (len);
		850	sv_catpvn (sv, dec->cur, len);
		851	dec->cur += len;
765	}	852	}
766	}	853	}
767	else	854	else
768	{	855	{
769	STRLEN len = decode_uint (dec);	856	STRLEN len = decode_uint (dec);
770		857
771	WANT (len);	858	WANT (len);
772	sv = newSVpvn (dec->cur, len);	859	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	860	dec->cur += len;
		861
		862	if (ecb_expect_false (dec->stringref)
		863	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		864	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	865	}
775		866
776	if (utf8)	867	if (utf8)
		868	{
		869	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		870	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		871	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		872
777	SvUTF8_on (sv);	873	SvUTF8_on (sv);
		874	}
778		875
779	return sv;	876	return sv;
780		877
781	fail:	878	fail:
		879	SvREFCNT_dec (sv);
		880	return &PL_sv_undef;
		881	}
		882
		883	static SV *
		884	decode_tagged (dec_t *dec)
		885	{
		886	SV *sv = 0;
		887	UV tag = decode_uint (dec);
		888
		889	WANT (1);
		890
		891	switch (tag)
		892	{
		893	case CBOR_TAG_MAGIC:
		894	sv = decode_sv (dec);
		895	break;
		896
		897	case CBOR_TAG_INDIRECTION:
		898	sv = newRV_noinc (decode_sv (dec));
		899	break;
		900
		901	case CBOR_TAG_STRINGREF_NAMESPACE:
		902	{
		903	ENTER; SAVETMPS;
		904
		905	SAVESPTR (dec->stringref);
		906	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		907
		908	sv = decode_sv (dec);
		909
		910	FREETMPS; LEAVE;
		911	}
		912	break;
		913
		914	case CBOR_TAG_STRINGREF:
		915	{
		916	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		917	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		918
		919	UV idx = decode_uint (dec);
		920
		921	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		922	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		923
		924	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		925	}
		926	break;
		927
		928	case CBOR_TAG_VALUE_SHAREABLE:
		929	{
		930	if (ecb_expect_false (!dec->shareable))
		931	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		932
		933	if (dec->cbor.flags & F_ALLOW_CYCLES)
		934	{
		935	sv = newSV (0);
		936	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		937
		938	SV *osv = decode_sv (dec);
		939	sv_setsv (sv, osv);
		940	SvREFCNT_dec_NN (osv);
		941	}
		942	else
		943	{
		944	av_push (dec->shareable, &PL_sv_undef);
		945	int idx = AvFILLp (dec->shareable);
		946	sv = decode_sv (dec);
		947	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		948	}
		949	}
		950	break;
		951
		952	case CBOR_TAG_VALUE_SHAREDREF:
		953	{
		954	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		955	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		956
		957	UV idx = decode_uint (dec);
		958
		959	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		960	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		961
		962	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		963
		964	if (sv == &PL_sv_undef)
		965	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		966	}
		967	break;
		968
		969	case CBOR_TAG_PERL_OBJECT:
		970	{
		971	sv = decode_sv (dec);
		972
		973	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		974	ERR ("corrupted CBOR data (non-array perl object)");
		975
		976	AV *av = (AV *)SvRV (sv);
		977	int len = av_len (av) + 1;
		978	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		979
		980	if (!stash)
		981	ERR ("cannot decode perl-object (package does not exist)");
		982
		983	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		984
		985	if (!method)
		986	ERR ("cannot decode perl-object (package does not have a THAW method)");
		987
		988	dSP;
		989
		990	ENTER; SAVETMPS; PUSHMARK (SP);
		991	EXTEND (SP, len + 1);
		992	// we re-bless the reference to get overload and other niceties right
		993	PUSHs (*av_fetch (av, 0, 1));
		994	PUSHs (sv_cbor);
		995
		996	int i;
		997
		998	for (i = 1; i < len; ++i)
		999	PUSHs (*av_fetch (av, i, 1));
		1000
		1001	PUTBACK;
		1002	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1003	SPAGAIN;
		1004
		1005	if (SvTRUE (ERRSV))
		1006	{
		1007	FREETMPS; LEAVE;
		1008	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1009	}
		1010
		1011	SvREFCNT_dec (sv);
		1012	sv = SvREFCNT_inc (POPs);
		1013
		1014	PUTBACK;
		1015
		1016	FREETMPS; LEAVE;
		1017	}
		1018	break;
		1019
		1020	default:
		1021	{
		1022	sv = decode_sv (dec);
		1023
		1024	dSP;
		1025	ENTER; SAVETMPS; PUSHMARK (SP);
		1026	EXTEND (SP, 2);
		1027	PUSHs (newSVuv (tag));
		1028	PUSHs (sv);
		1029
		1030	PUTBACK;
		1031	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1032	SPAGAIN;
		1033
		1034	if (SvTRUE (ERRSV))
		1035	{
		1036	FREETMPS; LEAVE;
		1037	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1038	}
		1039
		1040	if (count)
		1041	{
		1042	SvREFCNT_dec (sv);
		1043	sv = SvREFCNT_inc (POPs);
		1044	}
		1045	else
		1046	{
		1047	AV *av = newAV ();
		1048	av_push (av, newSVuv (tag));
		1049	av_push (av, sv);
		1050
		1051	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1052	? cbor_tagged_stash
		1053	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1054	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1055	}
		1056
		1057	PUTBACK;
		1058
		1059	FREETMPS; LEAVE;
		1060	}
		1061	break;
		1062	}
		1063
		1064	return sv;
		1065
		1066	fail:
		1067	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1068	return &PL_sv_undef;
783	}	1069	}
784		1070
785	static SV *	1071	static SV *
786	decode_sv (dec_t *dec)	1072	decode_sv (dec_t *dec)
787	{	1073	{
788	WANT (1);	1074	WANT (1);
789		1075
790	switch (*dec->cur >> 5)	1076	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1077	{
792	case 0: // unsigned int	1078	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1079	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1080	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1081	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1082	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1083	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1084	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1085
800	return decode_str (dec, 1);	1086	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1087	switch (*dec->cur++ & MINOR_MASK)
810	{	1088	{
811	case 20:	1089	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1090	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1091	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1092	#endif
815	return newSVsv (cbor_false);	1093	return newSVsv (types_false);
816	case 21:	1094	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1095	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1096	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1097	#endif
820	return newSVsv (cbor_true);	1098	return newSVsv (types_true);
821	case 22:	1099	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1100	return newSVsv (&PL_sv_undef);
		1101	case SIMPLE_UNDEF:
		1102	#if CBOR_SLOW
		1103	types_error = get_bool ("Types::Serialiser::error");
		1104	#endif
		1105	return newSVsv (types_error);
823		1106
824	case 25:	1107	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1108	{
		1109	WANT (2);
828		1110
		1111	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1112	dec->cur += 2;
		1113
		1114	return newSVnv (ecb_binary16_to_float (fp));
		1115	}
		1116
829	case 26:	1117	case MISC_FLOAT32:
830	{	1118	{
831	uint32_t fp;	1119	uint32_t fp;
832	WANT (4);	1120	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1121	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1122	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1125	fp = ecb_bswap32 (fp);
838		1126
839	return newSVnv (ecb_binary32_to_float (fp));	1127	return newSVnv (ecb_binary32_to_float (fp));
840	}	1128	}
841		1129
842	case 27:	1130	case MISC_FLOAT64:
843	{	1131	{
844	uint64_t fp;	1132	uint64_t fp;
845	WANT (8);	1133	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1134	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1135	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1138	fp = ecb_bswap64 (fp);
851		1139
852	return newSVnv (ecb_binary64_to_double (fp));	1140	return newSVnv (ecb_binary64_to_double (fp));
853	}	1141	}
854		1142
855	// 0..19 unassigned	1143	// 0..19 unassigned simple
856	// 24 reserved + unassigned (reserved values are not encodable)	1144	// 24 reserved + unassigned simple (reserved values are not encodable)
		1145	// 28-30 unassigned misc
		1146	// 31 break code
857	default:	1147	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1148	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1149	}
860		1150
861	break;	1151	break;
862	}	1152	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1153
920	fail:	1154	fail:
921	return &PL_sv_undef;	1155	return &PL_sv_undef;
922	}	1156	}
923		1157
924	static SV *	1158	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1159	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1160	{
927	dec_t dec;	1161	dec_t dec = { };
928	SV *sv;	1162	SV *sv;
		1163	STRLEN len;
		1164	char *data = SvPVbyte (string, len);
929		1165
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1166	if (len > cbor->max_size && cbor->max_size)
959	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1167	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1168	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1169
965	dec.cbor = *cbor;	1170	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1171	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1172	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1173
974	sv = decode_sv (&dec);	1174	sv = decode_sv (&dec);
975		1175
976	if (offset_return)	1176	if (offset_return)
977	*offset_return = dec.cur;	1177	*offset_return = dec.cur;
978		1178
979	if (!(offset_return || !sv))	1179	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1180	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1181	dec.err = "garbage after CBOR object";
		1182
		1183	if (dec.err)
		1184	{
		1185	if (dec.shareable)
		1186	{
		1187	// need to break cyclic links, which whould all be in shareable
		1188	int i;
		1189	SV **svp;
		1190
		1191	for (i = av_len (dec.shareable) + 1; i--; )
		1192	if ((svp = av_fetch (dec.shareable, i, 0)))
		1193	sv_setsv (*svp, &PL_sv_undef);
		1194	}
		1195
984	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988
989	if (!sv)
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1197	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
		1198	}
991		1199
992	sv = sv_2mortal (sv);	1200	sv = sv_2mortal (sv);
993		1201
994	return sv;	1202	return sv;
995	}	1203	}
996		1204
		1205	/////////////////////////////////////////////////////////////////////////////
		1206	// incremental parser
		1207
		1208	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1209
		1210	// returns 0 for notyet, 1 for success or error
		1211	static int
		1212	incr_parse (CBOR *self, SV *cborstr)
		1213	{
		1214	STRLEN cur;
		1215	SvPV (cborstr, cur);
		1216
		1217	while (ecb_expect_true (self->incr_need <= cur))
		1218	{
		1219	// table of integer count bytes
		1220	static I8 incr_len[MINOR_MASK + 1] = {
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	0, 0, 0, 0, 0, 0, 0, 0,
		1224	1, 2, 4, 8,-1,-1,-1,-2
		1225	};
		1226
		1227	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1228	U8 m = *p & MINOR_MASK;
		1229	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1230	I8 ilen = incr_len[m];
		1231
		1232	self->incr_need = self->incr_pos + 1;
		1233
		1234	if (ecb_expect_false (ilen < 0))
		1235	{
		1236	if (m != MINOR_INDEF)
		1237	return 1; // error
		1238
		1239	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1240	{
		1241	if (count >= 0)
		1242	return 1; // error
		1243
		1244	count = 1;
		1245	}
		1246	else
		1247	{
		1248	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1249	count = -1;
		1250	}
		1251	}
		1252	else
		1253	{
		1254	self->incr_need += ilen;
		1255	if (ecb_expect_false (self->incr_need > cur))
		1256	return 0;
		1257
		1258	int major = *p >> MAJOR_SHIFT;
		1259
		1260	switch (major)
		1261	{
		1262	case MAJOR_BYTES >> MAJOR_SHIFT:
		1263	case MAJOR_TEXT >> MAJOR_SHIFT:
		1264	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1265	case MAJOR_MAP >> MAJOR_SHIFT:
		1266	{
		1267	UV len;
		1268
		1269	if (ecb_expect_false (ilen))
		1270	{
		1271	len = 0;
		1272
		1273	do {
		1274	len = (len << 8) | *++p;
		1275	} while (--ilen);
		1276	}
		1277	else
		1278	len = m;
		1279
		1280	switch (major)
		1281	{
		1282	case MAJOR_BYTES >> MAJOR_SHIFT:
		1283	case MAJOR_TEXT >> MAJOR_SHIFT:
		1284	self->incr_need += len;
		1285	if (ecb_expect_false (self->incr_need > cur))
		1286	return 0;
		1287
		1288	break;
		1289
		1290	case MAJOR_MAP >> MAJOR_SHIFT:
		1291	len <<= 1;
		1292	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1293	if (len)
		1294	{
		1295	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1296	count = len + 1;
		1297	}
		1298	break;
		1299	}
		1300	}
		1301	}
		1302	}
		1303
		1304	self->incr_pos = self->incr_need;
		1305
		1306	if (count > 0)
		1307	{
		1308	while (!--count)
		1309	{
		1310	if (!AvFILLp (self->incr_count))
		1311	return 1; // done
		1312
		1313	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1314	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1315	}
		1316
		1317	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1318	}
		1319	}
		1320
		1321	return 0;
		1322	}
		1323
		1324
997	/////////////////////////////////////////////////////////////////////////////	1325	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1326	// XS interface functions
999		1327
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1328	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1329
1002	BOOT:	1330	BOOT:
1003	{	1331	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1332	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1333	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1334
1007	cbor_true = get_bool ("CBOR::XS::true");	1335	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	cbor_false = get_bool ("CBOR::XS::false");	1336	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1337
		1338	types_true = get_bool ("Types::Serialiser::true" );
		1339	types_false = get_bool ("Types::Serialiser::false");
		1340	types_error = get_bool ("Types::Serialiser::error");
		1341
		1342	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1343
		1344	sv_cbor = newSVpv ("CBOR", 0);
		1345	SvREADONLY_on (sv_cbor);
1009	}	1346	}
1010		1347
1011	PROTOTYPES: DISABLE	1348	PROTOTYPES: DISABLE
1012		1349
1013	void CLONE (...)	1350	void CLONE (...)
1014	CODE:	1351	CODE:
1015	cbor_stash = 0;	1352	cbor_stash = 0;
		1353	cbor_tagged_stash = 0;
		1354	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1355	types_boolean_stash = 0;
1017		1356
1018	void new (char *klass)	1357	void new (char *klass)
1019	PPCODE:	1358	PPCODE:
1020	{	1359	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1360	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1368
1030	void shrink (CBOR *self, int enable = 1)	1369	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1370	ALIAS:
1032	shrink = F_SHRINK	1371	shrink = F_SHRINK
1033	allow_unknown = F_ALLOW_UNKNOWN	1372	allow_unknown = F_ALLOW_UNKNOWN
		1373	allow_sharing = F_ALLOW_SHARING
		1374	allow_cycles = F_ALLOW_CYCLES
		1375	pack_strings = F_PACK_STRINGS
		1376	validate_utf8 = F_VALIDATE_UTF8
1034	PPCODE:	1377	PPCODE:
1035	{	1378	{
1036	if (enable)	1379	if (enable)
1037	self->flags |= ix;	1380	self->flags |= ix;
1038	else	1381	else
…		…
1043		1386
1044	void get_shrink (CBOR *self)	1387	void get_shrink (CBOR *self)
1045	ALIAS:	1388	ALIAS:
1046	get_shrink = F_SHRINK	1389	get_shrink = F_SHRINK
1047	get_allow_unknown = F_ALLOW_UNKNOWN	1390	get_allow_unknown = F_ALLOW_UNKNOWN
		1391	get_allow_sharing = F_ALLOW_SHARING
		1392	get_allow_cycles = F_ALLOW_CYCLES
		1393	get_pack_strings = F_PACK_STRINGS
		1394	get_validate_utf8 = F_VALIDATE_UTF8
1048	PPCODE:	1395	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1396	XPUSHs (boolSV (self->flags & ix));
1050		1397
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1398	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1399	PPCODE:
…		…
1068	CODE:	1415	CODE:
1069	RETVAL = self->max_size;	1416	RETVAL = self->max_size;
1070	OUTPUT:	1417	OUTPUT:
1071	RETVAL	1418	RETVAL
1072		1419
1073	#if 0 //TODO	1420	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1421	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1422	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1423	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1424	XPUSHs (ST (0));
1082	}
1083		1425
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1426	SV *get_filter (CBOR *self)
1085	PPCODE:	1427	CODE:
1086	{	1428	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1429	OUTPUT:
1088	self->cb_sk_object = newHV ();	1430	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1431
1108	void encode (CBOR *self, SV *scalar)	1432	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1433	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1434	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1435	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1448	EXTEND (SP, 2);
1125	PUSHs (sv);	1449	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1450	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1451	}
1128		1452
		1453	void incr_parse (CBOR *self, SV *cborstr)
		1454	ALIAS:
		1455	incr_parse_multiple = 1
		1456	PPCODE:
		1457	{
		1458	if (SvUTF8 (cborstr))
		1459	sv_utf8_downgrade (cborstr, 0);
		1460
		1461	if (!self->incr_count)
		1462	{
		1463	self->incr_count = newAV ();
		1464	self->incr_pos = 0;
		1465	self->incr_need = 1;
		1466
		1467	av_push (self->incr_count, newSViv (1));
		1468	}
		1469
		1470	do
		1471	{
		1472	if (!incr_parse (self, cborstr))
		1473	{
		1474	if (self->incr_need > self->max_size && self->max_size)
		1475	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1476	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1477
		1478	break;
		1479	}
		1480
		1481	SV *sv;
		1482	char *offset;
		1483
		1484	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1485	XPUSHs (sv);
		1486
		1487	sv_chop (cborstr, offset);
		1488
		1489	av_clear (self->incr_count);
		1490	av_push (self->incr_count, newSViv (1));
		1491
		1492	self->incr_pos = 0;
		1493	self->incr_need = self->incr_pos + 1;
		1494	}
		1495	while (ix);
		1496	}
		1497
		1498	void incr_reset (CBOR *self)
		1499	CODE:
		1500	{
		1501	SvREFCNT_dec (self->incr_count);
		1502	self->incr_count = 0;
		1503	}
		1504
1129	void DESTROY (CBOR *self)	1505	void DESTROY (CBOR *self)
1130	CODE:	1506	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1507	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1508
1134	PROTOTYPES: ENABLE	1509	PROTOTYPES: ENABLE
1135		1510
1136	void encode_cbor (SV *scalar)	1511	void encode_cbor (SV *scalar)
		1512	ALIAS:
		1513	encode_cbor = 0
		1514	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1515	PPCODE:
1138	{	1516	{
1139	CBOR cbor;	1517	CBOR cbor;
1140	cbor_init (&cbor);	1518	cbor_init (&cbor);
		1519	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1520	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1521	XPUSHs (scalar);
1143	}	1522	}
1144		1523
1145	void decode_cbor (SV *cborstr)	1524	void decode_cbor (SV *cborstr)

Diff Legend

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