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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs.
Revision 1.49 by root, Mon Feb 8 04:11:11 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		77
37	// rfc7049	78	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
44		85
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		90
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		96
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	98	};
58		99
59	#define F_SHRINK 0x00000001UL	100	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	104	#define F_PACK_STRINGS 0x00000010UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	105	#define F_VALIDATE_UTF8 0x00000020UL
64		106
65	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
66		108
67	#define SB do {	109	#define SB do {
68	#define SE } while (0)	110	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
82	#endif	124	#endif
83		125
84	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::	126	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
85	static SV types_true, types_false, types_error, sv_cbor;	127	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
86		128
87	typedef struct {	129	typedef struct {
88	U32 flags;	130	U32 flags;
89	U32 max_depth;	131	U32 max_depth;
90	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
		134
		135	// for the incremental parser
		136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	139	} CBOR;
92		140
93	ecb_inline void	141	ecb_inline void
94	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
95	{	143	{
96	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	145	cbor->max_depth = 512;
		146	}
		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
98	}	153	}
99		154
100	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	156	// utility functions
102		157
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	180	#endif
126	}	181	}
127	}	182	}
128		183
		184	// minimum length of a string to be registered for stringref
		185	ecb_inline int
		186	minimum_string_length (UV idx)
		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	}
		198
129	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
130	// encoder	200	// encoder
131		201
132	// structure used for encoding CBOR	202	// structure used for encoding CBOR
133	typedef struct	203	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
137	SV *sv; // result scalar	207	SV *sv; // result scalar
138	CBOR cbor;	208	CBOR cbor;
139	U32 depth; // recursion level	209	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	212	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	213	UV shareable_idx;
143	} enc_t;	214	} enc_t;
144		215
145	ecb_inline void	216	ecb_inline void
…		…
164	static void	235	static void
165	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
166	{	237	{
167	need (enc, 9);	238	need (enc, 9);
168		239
169	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major \| len;	241	*enc->cur++ = major \| len;
171	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
172	{	243	{
173	*enc->cur++ = major \| 24;	244	*enc->cur++ = major \| LENGTH_EXT1;
174	*enc->cur++ = len;	245	*enc->cur++ = len;
175	}	246	}
176	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
177	{	248	{
178	*enc->cur++ = major \| 25;	249	*enc->cur++ = major \| LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	251	*enc->cur++ = len;
181	}	252	}
182	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
183	{	254	{
184	*enc->cur++ = major \| 26;	255	*enc->cur++ = major \| LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	259	*enc->cur++ = len;
189	}	260	}
190	else	261	else
191	{	262	{
192	*enc->cur++ = major \| 27;	263	*enc->cur++ = major \| LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	271	*enc->cur++ = len;
201	}	272	}
202	}	273	}
203		274
204	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
205	encode_str (enc_t enc, int utf8, char str, STRLEN len)	282	encode_str (enc_t enc, int utf8, char str, STRLEN len)
206	{	283	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	285	need (enc, len);
209	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
210	enc->cur += len;	287	enc->cur += len;
211	}	288	}
212		289
213	ecb_inline void	290	static void
214	encode_tag (enc_t *enc, UV tag)	291	encode_strref (enc_t enc, int utf8, char str, STRLEN len)
215	{	292	{
216	encode_uint (enc, 0xc0, tag);	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);
217	}	313	}
218		314
219	static void encode_sv (enc_t enc, SV sv);	315	static void encode_sv (enc_t enc, SV sv);
220		316
221	static void	317	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
228		324
229	++enc->depth;	325	++enc->depth;
230		326
231	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		328
		329	if (SvMAGICAL (av))
233	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
234	{	331	{
235	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	{
		338	SV *sv = AvARRAY (av)[i];
		339	encode_sv (enc, sv ? sv : &PL_sv_undef);
		340	}
238		341
239	--enc->depth;	342	--enc->depth;
240	}	343	}
241		344
242	static void	345	static void
…		…
251		354
252	int pairs = hv_iterinit (hv);	355	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	356	int mg = SvMAGICAL (hv);
254		357
255	if (mg)	358	if (mg)
256	encode_ch (enc, 0xa0 \| 31);	359	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
257	else	360	else
258	encode_uint (enc, 0xa0, pairs);	361	encode_uint (enc, MAJOR_MAP, pairs);
259		362
260	while ((he = hv_iternext (hv)))	363	while ((he = hv_iternext (hv)))
261	{	364	{
262	if (HeKLEN (he) == HEf_SVKEY)	365	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	366	encode_sv (enc, HeSVKEY (he));
264	else	367	else
265	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	368	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
266		369
267	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	370	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
268	}	371	}
269		372
270	if (mg)	373	if (mg)
271	encode_ch (enc, 0xe0 \| 31);	374	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
272		375
273	--enc->depth;	376	--enc->depth;
274	}	377	}
275		378
276	// encode objects, arrays and special \0=false and \1=true values.	379	// encode objects, arrays and special \0=false and \1=true values.
277	static void	380	static void
278	encode_rv (enc_t enc, SV sv)	381	encode_rv (enc_t enc, SV sv)
279	{	382	{
280	SvGETMAGIC (sv);	383	SvGETMAGIC (sv);
281
282	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
283	&& ecb_expect_false (SvREFCNT (sv) > 1))
284	{
285	if (!enc->shareable)
286	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
287
288	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
289
290	if (SvOK (*svp))
291	{
292	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
293	encode_uint (enc, 0x00, SvUV (*svp));
294	return;
295	}
296	else
297	{
298	sv_setuv (*svp, enc->shareable_idx);
299	++enc->shareable_idx;
300	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
301	}
302	}
303		384
304	svtype svt = SvTYPE (sv);	385	svtype svt = SvTYPE (sv);
305		386
306	if (ecb_expect_false (SvOBJECT (sv)))	387	if (ecb_expect_false (SvOBJECT (sv)))
307	{	388	{
…		…
314	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	395	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
315	? cbor_tagged_stash	396	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	397	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		398
318	HV *stash = SvSTASH (sv);	399	HV *stash = SvSTASH (sv);
319	GV *method;
320		400
321	if (stash == boolean_stash)	401	if (stash == boolean_stash)
322	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	402	{
		403	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		404	return;
		405	}
323	else if (stash == error_stash)	406	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 \| 23);	407	{
		408	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		409	return;
		410	}
325	else if (stash == tagged_stash)	411	else if (stash == tagged_stash)
326	{	412	{
327	if (svt != SVt_PVAV)	413	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	414	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		415
330	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	416	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
331	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	417	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		418
		419	return;
		420	}
		421	}
		422
		423	if (ecb_expect_false (SvREFCNT (sv) > 1)
		424	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		425	{
		426	if (!enc->shareable)
		427	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		428
		429	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		430
		431	if (SvOK (*svp))
332	}	432	{
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		434	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		435	return;
		436	}
		437	else
		438	{
		439	sv_setuv (*svp, enc->shareable_idx);
		440	++enc->shareable_idx;
		441	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		442	}
		443	}
		444
		445	if (ecb_expect_false (SvOBJECT (sv)))
		446	{
		447	HV *stash = SvSTASH (sv);
		448	GV *method;
		449
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	450	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	451	{
335	dSP;	452	dSP;
336		453
337	ENTER; SAVETMPS; PUSHMARK (SP);	454	ENTER; SAVETMPS; PUSHMARK (SP);
338	// we re-bless the reference to get overload and other niceties right	455	// we re-bless the reference to get overload and other niceties right
…		…
370	// catch this surprisingly common error	487	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	488	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
372	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	489	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		490
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	491	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	492	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	493	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		494
378	while (count)	495	while (count)
379	encode_sv (enc, SP[1 - count--]);	496	encode_sv (enc, SP[1 - count--]);
380		497
381	PUTBACK;	498	PUTBACK;
…		…
402	{	519	{
403	double nv = SvNVX (sv);	520	double nv = SvNVX (sv);
404		521
405	need (enc, 9);	522	need (enc, 9);
406		523
407	if (ecb_expect_false (nv == (U32)nv))	524	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	525	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	526	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	527	else if (ecb_expect_false (nv == (float)nv))
411	{	528	{
412	uint32_t fp = ecb_float_to_binary32 (nv);	529	uint32_t fp = ecb_float_to_binary32 (nv);
413		530
414	*enc->cur++ = 0xe0 \| 26;	531	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
415		532
416	if (!ecb_big_endian ())	533	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	534	fp = ecb_bswap32 (fp);
418		535
419	memcpy (enc->cur, &fp, 4);	536	memcpy (enc->cur, &fp, 4);
…		…
421	}	538	}
422	else	539	else
423	{	540	{
424	uint64_t fp = ecb_double_to_binary64 (nv);	541	uint64_t fp = ecb_double_to_binary64 (nv);
425		542
426	*enc->cur++ = 0xe0 \| 27;	543	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
427		544
428	if (!ecb_big_endian ())	545	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	546	fp = ecb_bswap64 (fp);
430		547
431	memcpy (enc->cur, &fp, 8);	548	memcpy (enc->cur, &fp, 8);
…		…
440		557
441	if (SvPOKp (sv))	558	if (SvPOKp (sv))
442	{	559	{
443	STRLEN len;	560	STRLEN len;
444	char *str = SvPV (sv, len);	561	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	562	encode_strref (enc, SvUTF8 (sv), str, len);
446	}	563	}
447	else if (SvNOKp (sv))	564	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	565	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
450	{	567	{
451	if (SvIsUV (sv))	568	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	569	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	570	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	571	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	572	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	573	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	574	}
458	else if (SvROK (sv))	575	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	576	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	577	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 \| 22);	578	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	579	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 \| 23);	580	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
464	else	581	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	582	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	583	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	584	}
468		585
469	static SV *	586	static SV *
470	encode_cbor (SV scalar, CBOR cbor)	587	encode_cbor (SV scalar, CBOR cbor)
471	{	588	{
472	enc_t enc = { };	589	enc_t enc = { 0 };
473		590
474	enc.cbor = *cbor;	591	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	592	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	593	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	594	enc.end = SvEND (enc.sv);
478		595
479	SvPOK_only (enc.sv);	596	SvPOK_only (enc.sv);
		597
		598	if (cbor->flags & F_PACK_STRINGS)
		599	{
		600	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		601	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		602	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		603	}
		604
480	encode_sv (&enc, scalar);	605	encode_sv (&enc, scalar);
481		606
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	607	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	608	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		609
…		…
499	const char *err; // parse error, if != 0	624	const char *err; // parse error, if != 0
500	CBOR cbor;	625	CBOR cbor;
501	U32 depth; // recursion depth	626	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	627	U32 maxdepth; // recursion depth limit
503	AV *shareable;	628	AV *shareable;
		629	AV *stringref;
		630	SV *decode_tagged;
504	} dec_t;	631	} dec_t;
505		632
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	633	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
507		634
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	635	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
511	#define DEC_DEC_DEPTH --dec->depth	638	#define DEC_DEC_DEPTH --dec->depth
512		639
513	static UV	640	static UV
514	decode_uint (dec_t *dec)	641	decode_uint (dec_t *dec)
515	{	642	{
516	switch (*dec->cur & 31)	643	U8 m = *dec->cur & MINOR_MASK;
517	{	644	++dec->cur;
518	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
519	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
520	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
521	return *dec->cur++ & 31;
522		645
523	case 24:	646	if (ecb_expect_true (m < LENGTH_EXT1))
		647	return m;
		648	else if (ecb_expect_true (m == LENGTH_EXT1))
		649	{
524	WANT (2);	650	WANT (1);
525	dec->cur += 2;	651	dec->cur += 1;
526	return dec->cur[-1];	652	return dec->cur[-1];
527		653	}
528	case 25:	654	else if (ecb_expect_true (m == LENGTH_EXT2))
		655	{
529	WANT (3);	656	WANT (2);
530	dec->cur += 3;	657	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	658	return (((UV)dec->cur[-2]) << 8)
532	\| ((UV)dec->cur[-1]);	659	\| ((UV)dec->cur[-1]);
533		660	}
534	case 26:	661	else if (ecb_expect_true (m == LENGTH_EXT4))
		662	{
535	WANT (5);	663	WANT (4);
536	dec->cur += 5;	664	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	665	return (((UV)dec->cur[-4]) << 24)
538	\| (((UV)dec->cur[-3]) << 16)	666	\| (((UV)dec->cur[-3]) << 16)
539	\| (((UV)dec->cur[-2]) << 8)	667	\| (((UV)dec->cur[-2]) << 8)
540	\| ((UV)dec->cur[-1]);	668	\| ((UV)dec->cur[-1]);
541		669	}
542	case 27:	670	else if (ecb_expect_true (m == LENGTH_EXT8))
		671	{
543	WANT (9);	672	WANT (8);
544	dec->cur += 9;	673	dec->cur += 8;
		674
		675	return
		676	#if UVSIZE < 8
		677	0
		678	#else
545	return (((UV)dec->cur[-8]) << 56)	679	(((UV)dec->cur[-8]) << 56)
546	\| (((UV)dec->cur[-7]) << 48)	680	\| (((UV)dec->cur[-7]) << 48)
547	\| (((UV)dec->cur[-6]) << 40)	681	\| (((UV)dec->cur[-6]) << 40)
548	\| (((UV)dec->cur[-5]) << 32)	682	\| (((UV)dec->cur[-5]) << 32)
		683	#endif
549	\| (((UV)dec->cur[-4]) << 24)	684	\| (((UV)dec->cur[-4]) << 24)
550	\| (((UV)dec->cur[-3]) << 16)	685	\| (((UV)dec->cur[-3]) << 16)
551	\| (((UV)dec->cur[-2]) << 8)	686	\| (((UV)dec->cur[-2]) << 8)
552	\| ((UV)dec->cur[-1]);	687	\| ((UV)dec->cur[-1]);
553		688	}
554	default:	689	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	690	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		691
558	fail:	692	fail:
559	return 0;	693	return 0;
560	}	694	}
561		695
…		…
566	{	700	{
567	AV *av = newAV ();	701	AV *av = newAV ();
568		702
569	DEC_INC_DEPTH;	703	DEC_INC_DEPTH;
570		704
571	if ((*dec->cur & 31) == 31)	705	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
572	{	706	{
573	++dec->cur;	707	++dec->cur;
574		708
575	for (;;)	709	for (;;)
576	{	710	{
577	WANT (1);	711	WANT (1);
578		712
579	if (*dec->cur == (0xe0 \| 31))	713	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
580	{	714	{
581	++dec->cur;	715	++dec->cur;
582	break;	716	break;
583	}	717	}
584		718
…		…
587	}	721	}
588	else	722	else
589	{	723	{
590	int i, len = decode_uint (dec);	724	int i, len = decode_uint (dec);
591		725
		726	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
592	av_fill (av, len - 1);	727	av_fill (av, len - 1);
593		728
594	for (i = 0; i < len; ++i)	729	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	730	AvARRAY (av)[i] = decode_sv (dec);
596	}	731	}
…		…
606		741
607	static void	742	static void
608	decode_he (dec_t dec, HV hv)	743	decode_he (dec_t dec, HV hv)
609	{	744	{
610	// for speed reasons, we specialcase single-string	745	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	746	// byte or utf-8 strings as keys, but only when !stringref
612		747
613	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)	748	if (ecb_expect_true (!dec->stringref))
		749	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	750	{
615	I32 len = decode_uint (dec);	751	I32 len = decode_uint (dec);
616	char key = (char )dec->cur;	752	char key = (char )dec->cur;
617		753
		754	WANT (len);
618	dec->cur += len;	755	dec->cur += len;
619		756
620	hv_store (hv, key, len, decode_sv (dec), 0);	757	hv_store (hv, key, len, decode_sv (dec), 0);
		758
		759	return;
621	}	760	}
622	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)	761	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	762	{
624	I32 len = decode_uint (dec);	763	I32 len = decode_uint (dec);
625	char key = (char )dec->cur;	764	char key = (char )dec->cur;
626		765
		766	WANT (len);
627	dec->cur += len;	767	dec->cur += len;
628		768
		769	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		770	if (!is_utf8_string (key, len))
		771	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		772
629	hv_store (hv, key, -len, decode_sv (dec), 0);	773	hv_store (hv, key, -len, decode_sv (dec), 0);
		774
		775	return;
630	}	776	}
631	else	777
632	{
633	SV *k = decode_sv (dec);	778	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	779	SV *v = decode_sv (dec);
635		780
636	hv_store_ent (hv, k, v, 0);	781	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	782	SvREFCNT_dec (k);
638	}	783
		784	fail:
		785	;
639	}	786	}
640		787
641	static SV *	788	static SV *
642	decode_hv (dec_t *dec)	789	decode_hv (dec_t *dec)
643	{	790	{
644	HV *hv = newHV ();	791	HV *hv = newHV ();
645		792
646	DEC_INC_DEPTH;	793	DEC_INC_DEPTH;
647		794
648	if ((*dec->cur & 31) == 31)	795	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
649	{	796	{
650	++dec->cur;	797	++dec->cur;
651		798
652	for (;;)	799	for (;;)
653	{	800	{
654	WANT (1);	801	WANT (1);
655		802
656	if (*dec->cur == (0xe0 \| 31))	803	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
657	{	804	{
658	++dec->cur;	805	++dec->cur;
659	break;	806	break;
660	}	807	}
661		808
…		…
682	static SV *	829	static SV *
683	decode_str (dec_t *dec, int utf8)	830	decode_str (dec_t *dec, int utf8)
684	{	831	{
685	SV *sv = 0;	832	SV *sv = 0;
686		833
687	if ((*dec->cur & 31) == 31)	834	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
688	{	835	{
		836	// indefinite length strings
689	++dec->cur;	837	++dec->cur;
690		838
		839	U8 major = *dec->cur & MAJOR_MISC;
		840
691	sv = newSVpvn ("", 0);	841	sv = newSVpvn ("", 0);
692		842
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	843	for (;;)
695	{	844	{
696	WANT (1);	845	WANT (1);
697		846
698	if (*dec->cur == (0xe0 \| 31))	847	if ((*dec->cur - major) > LENGTH_EXT8)
		848	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
699	{	849	{
700	++dec->cur;	850	++dec->cur;
701	break;	851	break;
702	}	852	}
		853	else
		854	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		855
704	sv_catsv (sv, decode_sv (dec));	856	STRLEN len = decode_uint (dec);
		857
		858	WANT (len);
		859	sv_catpvn (sv, dec->cur, len);
		860	dec->cur += len;
705	}	861	}
706	}	862	}
707	else	863	else
708	{	864	{
709	STRLEN len = decode_uint (dec);	865	STRLEN len = decode_uint (dec);
710		866
711	WANT (len);	867	WANT (len);
712	sv = newSVpvn (dec->cur, len);	868	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	869	dec->cur += len;
		870
		871	if (ecb_expect_false (dec->stringref)
		872	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		873	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	874	}
715		875
716	if (utf8)	876	if (utf8)
		877	{
		878	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		879	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		880	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		881
717	SvUTF8_on (sv);	882	SvUTF8_on (sv);
		883	}
718		884
719	return sv;	885	return sv;
720		886
721	fail:	887	fail:
722	SvREFCNT_dec (sv);	888	SvREFCNT_dec (sv);
…		…
732	WANT (1);	898	WANT (1);
733		899
734	switch (tag)	900	switch (tag)
735	{	901	{
736	case CBOR_TAG_MAGIC:	902	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	903	sv = decode_sv (dec);
		904	break;
738		905
739	case CBOR_TAG_INDIRECTION:	906	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	907	sv = newRV_noinc (decode_sv (dec));
		908	break;
		909
		910	case CBOR_TAG_STRINGREF_NAMESPACE:
		911	{
		912	ENTER; SAVETMPS;
		913
		914	SAVESPTR (dec->stringref);
		915	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		916
		917	sv = decode_sv (dec);
		918
		919	FREETMPS; LEAVE;
		920	}
		921	break;
		922
		923	case CBOR_TAG_STRINGREF:
		924	{
		925	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		926	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		927
		928	UV idx = decode_uint (dec);
		929
		930	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		931	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		932
		933	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		934	}
		935	break;
741		936
742	case CBOR_TAG_VALUE_SHAREABLE:	937	case CBOR_TAG_VALUE_SHAREABLE:
743	{	938	{
744	if (ecb_expect_false (!dec->shareable))	939	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV )sv_2mortal ((SV )newAV ());	940	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
746		941
		942	if (dec->cbor.flags & F_ALLOW_CYCLES)
		943	{
747	sv = newSV (0);	944	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	945	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		946
750	SV *osv = decode_sv (dec);	947	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	948	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	949	SvREFCNT_dec_NN (osv);
753	}	950	}
754		951	else
755	return sv;	952	{
		953	av_push (dec->shareable, &PL_sv_undef);
		954	int idx = AvFILLp (dec->shareable);
		955	sv = decode_sv (dec);
		956	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		957	}
		958	}
		959	break;
756		960
757	case CBOR_TAG_VALUE_SHAREDREF:	961	case CBOR_TAG_VALUE_SHAREDREF:
758	{	962	{
759	if ((*dec->cur >> 5) != 0)	963	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	964	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		965
762	UV idx = decode_uint (dec);	966	UV idx = decode_uint (dec);
763		967
764	if (!dec->shareable \|\| idx > AvFILLp (dec->shareable))	968	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	969	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		970
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	971	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		972
		973	if (sv == &PL_sv_undef)
		974	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	975	}
		976	break;
769		977
770	case CBOR_TAG_PERL_OBJECT:	978	case CBOR_TAG_PERL_OBJECT:
771	{	979	{
772	sv = decode_sv (dec);	980	sv = decode_sv (dec);
773		981
…		…
813	sv = SvREFCNT_inc (POPs);	1021	sv = SvREFCNT_inc (POPs);
814		1022
815	PUTBACK;	1023	PUTBACK;
816		1024
817	FREETMPS; LEAVE;	1025	FREETMPS; LEAVE;
818
819	return sv;
820	}	1026	}
		1027	break;
821		1028
822	default:	1029	default:
823	{	1030	{
824	sv = decode_sv (dec);	1031	sv = decode_sv (dec);
825		1032
		1033	dSP;
		1034	ENTER; SAVETMPS; PUSHMARK (SP);
		1035	EXTEND (SP, 2);
		1036	PUSHs (newSVuv (tag));
		1037	PUSHs (sv);
		1038
		1039	PUTBACK;
		1040	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1041	SPAGAIN;
		1042
		1043	if (SvTRUE (ERRSV))
		1044	{
		1045	FREETMPS; LEAVE;
		1046	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1047	}
		1048
		1049	if (count)
		1050	{
		1051	SvREFCNT_dec (sv);
		1052	sv = SvREFCNT_inc (POPs);
		1053	}
		1054	else
		1055	{
826	AV *av = newAV ();	1056	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1057	av_push (av, newSVuv (tag));
828	av_push (av, sv);	1058	av_push (av, sv);
829		1059
830	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1060	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
831	? cbor_tagged_stash	1061	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1062	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1063	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1064	}
		1065
		1066	PUTBACK;
		1067
		1068	FREETMPS; LEAVE;
		1069	}
		1070	break;
836	}	1071	}
		1072
		1073	return sv;
837		1074
838	fail:	1075	fail:
839	SvREFCNT_dec (sv);	1076	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1077	return &PL_sv_undef;
841	}	1078	}
…		…
843	static SV *	1080	static SV *
844	decode_sv (dec_t *dec)	1081	decode_sv (dec_t *dec)
845	{	1082	{
846	WANT (1);	1083	WANT (1);
847		1084
848	switch (*dec->cur >> 5)	1085	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1086	{
850	case 0: // unsigned int	1087	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1088	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1089	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1090	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1091	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1092	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1093	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1094
858	case 4: // array	1095	case MAJOR_MISC >> MAJOR_SHIFT:
859	return decode_av (dec);
860	case 5: // map
861	return decode_hv (dec);
862	case 6: // tag
863	return decode_tagged (dec);
864	case 7: // misc
865	switch (*dec->cur++ & 31)	1096	switch (*dec->cur++ & MINOR_MASK)
866	{	1097	{
867	case 20:	1098	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1099	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1100	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1101	#endif
871	return newSVsv (types_false);	1102	return newSVsv (types_false);
872	case 21:	1103	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1104	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1105	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1106	#endif
876	return newSVsv (types_true);	1107	return newSVsv (types_true);
877	case 22:	1108	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1109	return newSVsv (&PL_sv_undef);
879	case 23:	1110	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1111	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1112	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1113	#endif
883	return newSVsv (types_error);	1114	return newSVsv (types_error);
884		1115
885	case 25:	1116	case MISC_FLOAT16:
886	{	1117	{
887	WANT (2);	1118	WANT (2);
888		1119
889	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1120	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
890	dec->cur += 2;	1121	dec->cur += 2;
891		1122
892	return newSVnv (ecb_binary16_to_float (fp));	1123	return newSVnv (ecb_binary16_to_float (fp));
893	}	1124	}
894		1125
895	case 26:	1126	case MISC_FLOAT32:
896	{	1127	{
897	uint32_t fp;	1128	uint32_t fp;
898	WANT (4);	1129	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1130	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1131	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1134	fp = ecb_bswap32 (fp);
904		1135
905	return newSVnv (ecb_binary32_to_float (fp));	1136	return newSVnv (ecb_binary32_to_float (fp));
906	}	1137	}
907		1138
908	case 27:	1139	case MISC_FLOAT64:
909	{	1140	{
910	uint64_t fp;	1141	uint64_t fp;
911	WANT (8);	1142	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1143	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1144	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1147	fp = ecb_bswap64 (fp);
917		1148
918	return newSVnv (ecb_binary64_to_double (fp));	1149	return newSVnv (ecb_binary64_to_double (fp));
919	}	1150	}
920		1151
921	// 0..19 unassigned	1152	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1153	// 24 reserved + unassigned simple (reserved values are not encodable)
		1154	// 28-30 unassigned misc
		1155	// 31 break code
923	default:	1156	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1157	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1158	}
926		1159
927	break;	1160	break;
928	}	1161	}
929		1162
…		…
932	}	1165	}
933		1166
934	static SV *	1167	static SV *
935	decode_cbor (SV string, CBOR cbor, char **offset_return)	1168	decode_cbor (SV string, CBOR cbor, char **offset_return)
936	{	1169	{
937	dec_t dec = { };	1170	dec_t dec = { 0 };
938	SV *sv;	1171	SV *sv;
939	STRLEN len;	1172	STRLEN len;
940	char *data = SvPVbyte (string, len);	1173	char *data = SvPVbyte (string, len);
941		1174
942	if (len > cbor->max_size && cbor->max_size)	1175	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1189	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1190	dec.err = "garbage after CBOR object";
958		1191
959	if (dec.err)	1192	if (dec.err)
960	{	1193	{
		1194	if (dec.shareable)
		1195	{
		1196	// need to break cyclic links, which whould all be in shareable
		1197	int i;
		1198	SV **svp;
		1199
		1200	for (i = av_len (dec.shareable) + 1; i--; )
		1201	if ((svp = av_fetch (dec.shareable, i, 0)))
		1202	sv_setsv (*svp, &PL_sv_undef);
		1203	}
		1204
961	SvREFCNT_dec (sv);	1205	SvREFCNT_dec (sv);
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);	1206	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
963	}	1207	}
964		1208
965	sv = sv_2mortal (sv);	1209	sv = sv_2mortal (sv);
966		1210
967	return sv;	1211	return sv;
968	}	1212	}
969		1213
		1214	/////////////////////////////////////////////////////////////////////////////
		1215	// incremental parser
		1216
		1217	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1218
		1219	// returns 0 for notyet, 1 for success or error
		1220	static int
		1221	incr_parse (CBOR self, SV cborstr)
		1222	{
		1223	STRLEN cur;
		1224	SvPV (cborstr, cur);
		1225
		1226	while (ecb_expect_true (self->incr_need <= cur))
		1227	{
		1228	// table of integer count bytes
		1229	static I8 incr_len[MINOR_MASK + 1] = {
		1230	0, 0, 0, 0, 0, 0, 0, 0,
		1231	0, 0, 0, 0, 0, 0, 0, 0,
		1232	0, 0, 0, 0, 0, 0, 0, 0,
		1233	1, 2, 4, 8,-1,-1,-1,-2
		1234	};
		1235
		1236	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1237	U8 m = *p & MINOR_MASK;
		1238	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1239	I8 ilen = incr_len[m];
		1240
		1241	self->incr_need = self->incr_pos + 1;
		1242
		1243	if (ecb_expect_false (ilen < 0))
		1244	{
		1245	if (m != MINOR_INDEF)
		1246	return 1; // error
		1247
		1248	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1249	{
		1250	if (count >= 0)
		1251	return 1; // error
		1252
		1253	count = 1;
		1254	}
		1255	else
		1256	{
		1257	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1258	count = -1;
		1259	}
		1260	}
		1261	else
		1262	{
		1263	self->incr_need += ilen;
		1264	if (ecb_expect_false (self->incr_need > cur))
		1265	return 0;
		1266
		1267	int major = *p >> MAJOR_SHIFT;
		1268
		1269	switch (major)
		1270	{
		1271	case MAJOR_TAG >> MAJOR_SHIFT:
		1272	++count; // tags merely prefix another value
		1273	break;
		1274
		1275	case MAJOR_BYTES >> MAJOR_SHIFT:
		1276	case MAJOR_TEXT >> MAJOR_SHIFT:
		1277	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1278	case MAJOR_MAP >> MAJOR_SHIFT:
		1279	{
		1280	UV len;
		1281
		1282	if (ecb_expect_false (ilen))
		1283	{
		1284	len = 0;
		1285
		1286	do {
		1287	len = (len << 8) \| *++p;
		1288	} while (--ilen);
		1289	}
		1290	else
		1291	len = m;
		1292
		1293	switch (major)
		1294	{
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	self->incr_need += len;
		1298	if (ecb_expect_false (self->incr_need > cur))
		1299	return 0;
		1300
		1301	break;
		1302
		1303	case MAJOR_MAP >> MAJOR_SHIFT:
		1304	len <<= 1;
		1305	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1306	if (len)
		1307	{
		1308	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1309	count = len + 1;
		1310	}
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316
		1317	self->incr_pos = self->incr_need;
		1318
		1319	if (count > 0)
		1320	{
		1321	while (!--count)
		1322	{
		1323	if (!AvFILLp (self->incr_count))
		1324	return 1; // done
		1325
		1326	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1327	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1328	}
		1329
		1330	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1331	}
		1332	}
		1333
		1334	return 0;
		1335	}
		1336
		1337
970	/////////////////////////////////////////////////////////////////////////////	1338	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1339	// XS interface functions
972		1340
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1341	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1342
…		…
981	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1349	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
982		1350
983	types_true = get_bool ("Types::Serialiser::true" );	1351	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1352	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1353	types_error = get_bool ("Types::Serialiser::error");
		1354
		1355	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
986		1356
987	sv_cbor = newSVpv ("CBOR", 0);	1357	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1358	SvREADONLY_on (sv_cbor);
989	}	1359	}
990		1360
…		…
1012	void shrink (CBOR *self, int enable = 1)	1382	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1383	ALIAS:
1014	shrink = F_SHRINK	1384	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1385	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1386	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1387	allow_cycles = F_ALLOW_CYCLES
1018	dedup_strings = F_DEDUP_STRINGS	1388	pack_strings = F_PACK_STRINGS
		1389	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1390	PPCODE:
1020	{	1391	{
1021	if (enable)	1392	if (enable)
1022	self->flags \|= ix;	1393	self->flags \|= ix;
1023	else	1394	else
…		…
1029	void get_shrink (CBOR *self)	1400	void get_shrink (CBOR *self)
1030	ALIAS:	1401	ALIAS:
1031	get_shrink = F_SHRINK	1402	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1403	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1404	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1405	get_allow_cycles = F_ALLOW_CYCLES
1035	get_dedup_strings = F_DEDUP_STRINGS	1406	get_pack_strings = F_PACK_STRINGS
		1407	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1408	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1409	XPUSHs (boolSV (self->flags & ix));
1038		1410
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1411	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1412	PPCODE:
…		…
1053	XPUSHs (ST (0));	1425	XPUSHs (ST (0));
1054		1426
1055	int get_max_size (CBOR *self)	1427	int get_max_size (CBOR *self)
1056	CODE:	1428	CODE:
1057	RETVAL = self->max_size;	1429	RETVAL = self->max_size;
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	void filter (CBOR self, SV filter = 0)
		1434	PPCODE:
		1435	SvREFCNT_dec (self->filter);
		1436	self->filter = filter ? newSVsv (filter) : filter;
		1437	XPUSHs (ST (0));
		1438
		1439	SV get_filter (CBOR self)
		1440	CODE:
		1441	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1442	OUTPUT:
1059	RETVAL	1443	RETVAL
1060		1444
1061	void encode (CBOR self, SV scalar)	1445	void encode (CBOR self, SV scalar)
1062	PPCODE:	1446	PPCODE:
…		…
1077	EXTEND (SP, 2);	1461	EXTEND (SP, 2);
1078	PUSHs (sv);	1462	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1463	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1464	}
1081		1465
		1466	void incr_parse (CBOR self, SV cborstr)
		1467	ALIAS:
		1468	incr_parse_multiple = 1
		1469	PPCODE:
		1470	{
		1471	if (SvUTF8 (cborstr))
		1472	sv_utf8_downgrade (cborstr, 0);
		1473
		1474	if (!self->incr_count)
		1475	{
		1476	self->incr_count = newAV ();
		1477	self->incr_pos = 0;
		1478	self->incr_need = 1;
		1479
		1480	av_push (self->incr_count, newSViv (1));
		1481	}
		1482
		1483	do
		1484	{
		1485	if (!incr_parse (self, cborstr))
		1486	{
		1487	if (self->incr_need > self->max_size && self->max_size)
		1488	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1489	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1490
		1491	break;
		1492	}
		1493
		1494	SV *sv;
		1495	char *offset;
		1496
		1497	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1498	XPUSHs (sv);
		1499
		1500	sv_chop (cborstr, offset);
		1501
		1502	av_clear (self->incr_count);
		1503	av_push (self->incr_count, newSViv (1));
		1504
		1505	self->incr_pos = 0;
		1506	self->incr_need = self->incr_pos + 1;
		1507	}
		1508	while (ix);
		1509	}
		1510
		1511	void incr_reset (CBOR *self)
		1512	CODE:
		1513	{
		1514	SvREFCNT_dec (self->incr_count);
		1515	self->incr_count = 0;
		1516	}
		1517
		1518	void DESTROY (CBOR *self)
		1519	PPCODE:
		1520	cbor_free (self);
		1521
1082	PROTOTYPES: ENABLE	1522	PROTOTYPES: ENABLE
1083		1523
1084	void encode_cbor (SV *scalar)	1524	void encode_cbor (SV *scalar)
		1525	ALIAS:
		1526	encode_cbor = 0
		1527	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1528	PPCODE:
1086	{	1529	{
1087	CBOR cbor;	1530	CBOR cbor;
1088	cbor_init (&cbor);	1531	cbor_init (&cbor);
		1532	cbor.flags \|= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1533	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1534	XPUSHs (scalar);
1091	}	1535	}
1092		1536
1093	void decode_cbor (SV *cborstr)	1537	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs. Revision 1.49 by root, Mon Feb 8 04:11:11 2016 UTC

Diff Legend

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs.
Revision 1.49 by root, Mon Feb 8 04:11:11 2016 UTC