[ViewVC] Diff of: 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 1.34 by root, Sat Nov 30 16:19:59 2013 UTC

…		…
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
12	#include "ecb.h"	12	#include "ecb.h"
13		13
14	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	14	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	17	#endif
		18	#ifndef HvNAMELEN
		19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		20	#endif
		21	#ifndef HvNAMEUTF8
		22	# define HvNAMEUTF8(hv) 0
		23	#endif
		24	#ifndef SvREFCNT_dec_NN
		25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		26	#endif
17		27
		28	// known tags
		29	enum cbor_tag
		30	{
		31	// extensions
		32	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		33	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		34	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		35	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		36	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		37	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		39
		40	// rfc7049
		41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		43	CBOR_TAG_POS_BIGNUM = 2, // byte string
		44	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		46	CBOR_TAG_BIGFLOAT = 5, // array
		47
		48	CBOR_TAG_CONV_B64U = 21, // base64url, any
		49	CBOR_TAG_CONV_B64 = 22, // base64, any
		50	CBOR_TAG_CONV_HEX = 23, // base16, any
		51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		52
		53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		58
		59	CBOR_TAG_MAGIC = 55799 // self-describe cbor
		60	};
		61
18	#define F_SHRINK 0x00000200UL	62	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	63	#define F_ALLOW_UNKNOWN 0x00000002UL
		64	#define F_ALLOW_SHARING 0x00000004UL
		65	#define F_PACK_STRINGS 0x00000008UL
20		66
21	#define INIT_SIZE 32 // initial scalar size to be allocated	67	#define INIT_SIZE 32 // initial scalar size to be allocated
22		68
23	#define SB do {	69	#define SB do {
24	#define SE } while (0)	70	#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		71
37	#define IN_RANGE_INC(type,val,beg,end) \	72	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	73	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	74	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		75
…		…
46	#else	81	#else
47	# define CBOR_SLOW 0	82	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	83	# define CBOR_STASH cbor_stash
49	#endif	84	#endif
50		85
51	static HV cbor_stash, cbor_boolean_stash; // CBOR::XS::	86	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
52	static SV cbor_true, cbor_false;	87	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
53		88
54	typedef struct {	89	typedef struct {
55	U32 flags;	90	U32 flags;
56	U32 max_depth;	91	U32 max_depth;
57	STRLEN max_size;	92	STRLEN max_size;
58		93	SV *filter;
59	SV *cb_object;
60	HV *cb_sk_object;
61	} CBOR;	94	} CBOR;
62		95
63	INLINE void	96	ecb_inline void
64	cbor_init (CBOR *cbor)	97	cbor_init (CBOR *cbor)
65	{	98	{
66	Zero (cbor, 1, CBOR);	99	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	100	cbor->max_depth = 512;
68	}	101	}
69		102
		103	ecb_inline void
		104	cbor_free (CBOR *cbor)
		105	{
		106	SvREFCNT_dec (cbor->filter);
		107	}
		108
70	/////////////////////////////////////////////////////////////////////////////	109	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	110	// utility functions
72		111
73	INLINE SV *	112	ecb_inline SV *
74	get_bool (const char *name)	113	get_bool (const char *name)
75	{	114	{
76	SV *sv = get_sv (name, 1);	115	SV *sv = get_sv (name, 1);
77		116
78	SvREADONLY_on (sv);	117	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	118	SvREADONLY_on (SvRV (sv));
80		119
81	return sv;	120	return sv;
82	}	121	}
83		122
84	INLINE void	123	ecb_inline void
85	shrink (SV *sv)	124	shrink (SV *sv)
86	{	125	{
87	sv_utf8_downgrade (sv, 1);	126	sv_utf8_downgrade (sv, 1);
88		127
89	if (SvLEN (sv) > SvCUR (sv) + 1)	128	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	133	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	134	#endif
96	}	135	}
97	}	136	}
98		137
99	/////////////////////////////////////////////////////////////////////////////	138	// minimum length of a string to be registered for stringref
100	// fp hell	139	ecb_inline int
101		140	minimum_string_length (UV idx)
102	//TODO	141	{
		142	return idx > 23
		143	? idx > 0xffU
		144	? idx > 0xffffU
		145	? idx > 0xffffffffU
		146	? 11
		147	: 7
		148	: 5
		149	: 4
		150	: 3;
		151	}
103		152
104	/////////////////////////////////////////////////////////////////////////////	153	/////////////////////////////////////////////////////////////////////////////
105	// encoder	154	// encoder
106		155
107	// structure used for encoding CBOR	156	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	159	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	160	char *end; // SvEND (sv)
112	SV *sv; // result scalar	161	SV *sv; // result scalar
113	CBOR cbor;	162	CBOR cbor;
114	U32 depth; // recursion level	163	U32 depth; // recursion level
		164	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		165	UV stringref_idx;
		166	HV *shareable; // ptr => index, or 0
		167	UV shareable_idx;
115	} enc_t;	168	} enc_t;
116		169
117	INLINE void	170	ecb_inline void
118	need (enc_t *enc, STRLEN len)	171	need (enc_t *enc, STRLEN len)
119	{	172	{
120	if (expect_false (enc->cur + len >= enc->end))	173	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	174	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	175	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	176	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	177	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	178	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	179	}
127	}	180	}
128		181
129	INLINE void	182	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	183	encode_ch (enc_t *enc, char ch)
131	{	184	{
132	need (enc, 1);	185	need (enc, 1);
133	*enc->cur++ = ch;	186	*enc->cur++ = ch;
134	}	187	}
…		…
136	static void	189	static void
137	encode_uint (enc_t *enc, int major, UV len)	190	encode_uint (enc_t *enc, int major, UV len)
138	{	191	{
139	need (enc, 9);	192	need (enc, 9);
140		193
141	if (len < 24)	194	if (ecb_expect_true (len < 24))
142	*enc->cur++ = major \| len;	195	*enc->cur++ = major \| len;
143	else if (len < 0x100)	196	else if (ecb_expect_true (len <= 0xff))
144	{	197	{
145	*enc->cur++ = major \| 24;	198	*enc->cur++ = major \| 24;
146	*enc->cur++ = len;	199	*enc->cur++ = len;
147	}	200	}
148	else if (len < 0x10000)	201	else if (len <= 0xffff)
149	{	202	{
150	*enc->cur++ = major \| 25;	203	*enc->cur++ = major \| 25;
151	*enc->cur++ = len >> 8;	204	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	205	*enc->cur++ = len;
153	}	206	}
154	else if (len < 0x100000000)	207	else if (len <= 0xffffffff)
155	{	208	{
156	*enc->cur++ = major \| 26;	209	*enc->cur++ = major \| 26;
157	*enc->cur++ = len >> 24;	210	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	211	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	212	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	213	*enc->cur++ = len;
161	}	214	}
162	else if (len)	215	else
163	{	216	{
164	*enc->cur++ = major \| 27;	217	*enc->cur++ = major \| 27;
165	*enc->cur++ = len >> 56;	218	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	219	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	220	*enc->cur++ = len >> 40;
…		…
171	*enc->cur++ = len >> 8;	224	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	225	*enc->cur++ = len;
173	}	226	}
174	}	227	}
175		228
176	static void	229	ecb_inline void
		230	encode_tag (enc_t *enc, UV tag)
		231	{
		232	encode_uint (enc, 0xc0, tag);
		233	}
		234
		235	ecb_inline void
177	encode_str (enc_t enc, int utf8, char str, STRLEN len)	236	encode_str (enc_t enc, int utf8, char str, STRLEN len)
178	{	237	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	238	encode_uint (enc, utf8 ? 0x60 : 0x40, len);
180	need (enc, len);	239	need (enc, len);
181	memcpy (enc->cur, str, len);	240	memcpy (enc->cur, str, len);
182	enc->cur += len;	241	enc->cur += len;
183	}	242	}
184		243
		244	static void
		245	encode_strref (enc_t enc, int utf8, char str, STRLEN len)
		246	{
		247	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		248	{
		249	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		250
		251	if (SvOK (*svp))
		252	{
		253	// already registered, use stringref
		254	encode_tag (enc, CBOR_TAG_STRINGREF);
		255	encode_uint (enc, 0x00, SvUV (*svp));
		256	return;
		257	}
		258	else if (len >= minimum_string_length (enc->stringref_idx))
		259	{
		260	// register only
		261	sv_setuv (*svp, enc->stringref_idx);
		262	++enc->stringref_idx;
		263	}
		264	}
		265
		266	encode_str (enc, utf8, str, len);
		267	}
		268
185	static void encode_sv (enc_t enc, SV sv);	269	static void encode_sv (enc_t enc, SV sv);
186		270
187	static void	271	static void
188	encode_av (enc_t enc, AV av)	272	encode_av (enc_t enc, AV av)
189	{	273	{
…		…
226	while ((he = hv_iternext (hv)))	310	while ((he = hv_iternext (hv)))
227	{	311	{
228	if (HeKLEN (he) == HEf_SVKEY)	312	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	313	encode_sv (enc, HeSVKEY (he));
230	else	314	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	315	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		316
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	317	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	318	}
235		319
236	if (mg)	320	if (mg)
237	encode_ch (enc, 0xe0 \| 31);	321	encode_ch (enc, 0xe0 \| 31);
238		322
…		…
241		325
242	// encode objects, arrays and special \0=false and \1=true values.	326	// encode objects, arrays and special \0=false and \1=true values.
243	static void	327	static void
244	encode_rv (enc_t enc, SV sv)	328	encode_rv (enc_t enc, SV sv)
245	{	329	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	330	SvGETMAGIC (sv);
		331
249	svt = SvTYPE (sv);	332	svtype svt = SvTYPE (sv);
250		333
251	if (expect_false (SvOBJECT (sv)))	334	if (ecb_expect_false (SvOBJECT (sv)))
252	{	335	{
253	HV *stash = !CBOR_SLOW \|\| cbor_boolean_stash	336	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
254	? cbor_boolean_stash	337	? types_boolean_stash
		338	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		339	HV *error_stash = !CBOR_SLOW \|\| types_error_stash
		340	? types_error_stash
		341	: gv_stashpv ("Types::Serialiser::Error", 1);
		342	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
		343	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	344	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		345
257	if (SvSTASH (sv) == stash)	346	HV *stash = SvSTASH (sv);
		347
		348	if (stash == boolean_stash)
		349	{
258	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	350	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);
		351	return;
		352	}
		353	else if (stash == error_stash)
		354	{
		355	encode_ch (enc, 0xe0 \| 23);
		356	return;
		357	}
		358	else if (stash == tagged_stash)
		359	{
		360	if (svt != SVt_PVAV)
		361	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		362
		363	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));
		364	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		365
		366	return;
		367	}
		368	}
		369
		370	if (ecb_expect_false (SvREFCNT (sv) > 1)
		371	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		372	{
		373	if (!enc->shareable)
		374	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		375
		376	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		377
		378	if (SvOK (*svp))
		379	{
		380	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		381	encode_uint (enc, 0x00, SvUV (*svp));
		382	return;
		383	}
259	else	384	else
260	{	385	{
261	#if 0 //TODO	386	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	387	++enc->shareable_idx;
		388	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		389	}
		390	}
		391
		392	if (ecb_expect_false (SvOBJECT (sv)))
		393	{
		394	HV *stash = SvSTASH (sv);
		395	GV *method;
		396
		397	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	398	{
		399	dSP;
		400
		401	ENTER; SAVETMPS; PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	402	// 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)));	403	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		404
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	405	PUTBACK;
		406	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	407	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	408	SPAGAIN;
278		409
279	// catch this surprisingly common error	410	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	411	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)));	412	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		413
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	414	encode_sv (enc, POPs);
287		415
		416	PUTBACK;
		417
288	FREETMPS; LEAVE;	418	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	}	419	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	420	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	421	{
		422	dSP;
		423
		424	ENTER; SAVETMPS; PUSHMARK (SP);
		425	EXTEND (SP, 2);
		426	// we re-bless the reference to get overload and other niceties right
		427	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		428	PUSHs (sv_cbor);
		429
		430	PUTBACK;
		431	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		432	SPAGAIN;
		433
		434	// catch this surprisingly common error
		435	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		436	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		437
		438	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		439	encode_uint (enc, 0x80, count + 1);
		440	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		441
		442	while (count)
		443	encode_sv (enc, SP[1 - count--]);
		444
		445	PUTBACK;
		446
		447	FREETMPS; LEAVE;
		448	}
298	else	449	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	450	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	451	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	452	}
304	else if (svt == SVt_PVHV)	453	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	454	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	455	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	456	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	457	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	458	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	459	encode_tag (enc, CBOR_TAG_INDIRECTION);
		460	encode_sv (enc, sv);
		461	}
328	}	462	}
329		463
330	static void	464	static void
331	encode_nv (enc_t enc, SV sv)	465	encode_nv (enc_t enc, SV sv)
332	{	466	{
333	double nv = SvNVX (sv);	467	double nv = SvNVX (sv);
334		468
335	need (enc, 9);	469	need (enc, 9);
336		470
337	if (expect_false (nv == (U32)nv))	471	if (ecb_expect_false (nv == (U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	472	encode_uint (enc, 0x00, (U32)nv);
339	//TODO: maybe I32?	473	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	474	else if (ecb_expect_false (nv == (float)nv))
341	{	475	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	476	uint32_t fp = ecb_float_to_binary32 (nv);
343		477
344	*enc->cur++ = 0xe0 \| 26;	478	*enc->cur++ = 0xe0 \| 26;
345		479
…		…
370		504
371	if (SvPOKp (sv))	505	if (SvPOKp (sv))
372	{	506	{
373	STRLEN len;	507	STRLEN len;
374	char *str = SvPV (sv, len);	508	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	509	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	510	}
377	else if (SvNOKp (sv))	511	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	512	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	513	else if (SvIOKp (sv))
380	{	514	{
…		…
397	}	531	}
398		532
399	static SV *	533	static SV *
400	encode_cbor (SV scalar, CBOR cbor)	534	encode_cbor (SV scalar, CBOR cbor)
401	{	535	{
402	enc_t enc;	536	enc_t enc = { };
403		537
404	enc.cbor = *cbor;	538	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	539	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	540	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	541	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		542
410	SvPOK_only (enc.sv);	543	SvPOK_only (enc.sv);
		544
		545	if (cbor->flags & F_PACK_STRINGS)
		546	{
		547	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		548	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		549	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		550	}
		551
411	encode_sv (&enc, scalar);	552	encode_sv (&enc, scalar);
412		553
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	554	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	555	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		556
…		…
429	U8 *end; // end of input string	570	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	571	const char *err; // parse error, if != 0
431	CBOR cbor;	572	CBOR cbor;
432	U32 depth; // recursion depth	573	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	574	U32 maxdepth; // recursion depth limit
		575	AV *shareable;
		576	AV *stringref;
		577	SV *decode_tagged;
434	} dec_t;	578	} dec_t;
435		579
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	580	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
437		581
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	582	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
439		583
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	584	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	585	#define DEC_DEC_DEPTH --dec->depth
442		586
443	static UV	587	static UV
…		…
470	\| ((UV)dec->cur[-1]);	614	\| ((UV)dec->cur[-1]);
471		615
472	case 27:	616	case 27:
473	WANT (9);	617	WANT (9);
474	dec->cur += 9;	618	dec->cur += 9;
		619
		620	return
		621	#if UVSIZE < 8
		622	0
		623	#else
475	return (((UV)dec->cur[-8]) << 56)	624	(((UV)dec->cur[-8]) << 56)
476	\| (((UV)dec->cur[-7]) << 48)	625	\| (((UV)dec->cur[-7]) << 48)
477	\| (((UV)dec->cur[-6]) << 40)	626	\| (((UV)dec->cur[-6]) << 40)
478	\| (((UV)dec->cur[-5]) << 32)	627	\| (((UV)dec->cur[-5]) << 32)
		628	#endif
479	\| (((UV)dec->cur[-4]) << 24)	629	\| (((UV)dec->cur[-4]) << 24)
480	\| (((UV)dec->cur[-3]) << 16)	630	\| (((UV)dec->cur[-3]) << 16)
481	\| (((UV)dec->cur[-2]) << 8)	631	\| (((UV)dec->cur[-2]) << 8)
482	\| ((UV)dec->cur[-1]);	632	\| ((UV)dec->cur[-1]);
483		633
…		…
504		654
505	for (;;)	655	for (;;)
506	{	656	{
507	WANT (1);	657	WANT (1);
508		658
509	if (*dec->cur == 0xe0 \| 31)	659	if (*dec->cur == (0xe0 \| 31))
510	{	660	{
511	++dec->cur;	661	++dec->cur;
512	break;	662	break;
513	}	663	}
514		664
…		…
532	SvREFCNT_dec (av);	682	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	683	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	684	return &PL_sv_undef;
535	}	685	}
536		686
		687	static void
		688	decode_he (dec_t dec, HV hv)
		689	{
		690	// for speed reasons, we specialcase single-string
		691	// byte or utf-8 strings as keys, but only when !stringref
		692
		693	if (ecb_expect_true (!dec->stringref))
		694	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)
		695	{
		696	I32 len = decode_uint (dec);
		697	char key = (char )dec->cur;
		698
		699	dec->cur += len;
		700
		701	if (ecb_expect_false (dec->stringref))
		702	av_push (dec->stringref, newSVpvn (key, len));
		703
		704	hv_store (hv, key, len, decode_sv (dec), 0);
		705
		706	return;
		707	}
		708	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)
		709	{
		710	I32 len = decode_uint (dec);
		711	char key = (char )dec->cur;
		712
		713	dec->cur += len;
		714
		715	if (ecb_expect_false (dec->stringref))
		716	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));
		717
		718	hv_store (hv, key, -len, decode_sv (dec), 0);
		719
		720	return;
		721	}
		722
		723	SV *k = decode_sv (dec);
		724	SV *v = decode_sv (dec);
		725
		726	hv_store_ent (hv, k, v, 0);
		727	SvREFCNT_dec (k);
		728	}
		729
537	static SV *	730	static SV *
538	decode_hv (dec_t *dec)	731	decode_hv (dec_t *dec)
539	{	732	{
540	HV *hv = newHV ();	733	HV *hv = newHV ();
541		734
…		…
547		740
548	for (;;)	741	for (;;)
549	{	742	{
550	WANT (1);	743	WANT (1);
551		744
552	if (*dec->cur == 0xe0 \| 31)	745	if (*dec->cur == (0xe0 \| 31))
553	{	746	{
554	++dec->cur;	747	++dec->cur;
555	break;	748	break;
556	}	749	}
557		750
558	SV *k = decode_sv (dec);	751	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	752	}
563	}	753	}
564	else	754	else
565	{	755	{
566	int len = decode_uint (dec);	756	int pairs = decode_uint (dec);
567		757
568	while (len--)	758	while (pairs--)
569	{	759	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	}	760	}
576		761
577	DEC_DEC_DEPTH;	762	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	763	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		764
735	fail:	765	fail:
736	SvREFCNT_dec (hv);	766	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	767	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	768	return &PL_sv_undef;
739	}	769	}
740		770
741	static SV *	771	static SV *
742	decode_str (dec_t *dec, int utf8)	772	decode_str (dec_t *dec, int utf8)
743	{	773	{
744	SV *sv;	774	SV *sv = 0;
745		775
746	if ((*dec->cur & 31) == 31)	776	if ((*dec->cur & 31) == 31)
747	{	777	{
		778	// indefinite length strings
748	++dec->cur;	779	++dec->cur;
749		780
		781	unsigned char major = *dec->cur & 0xe0;
		782
750	sv = newSVpvn ("", 0);	783	sv = newSVpvn ("", 0);
751		784
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	785	for (;;)
754	{	786	{
755	WANT (1);	787	WANT (1);
756		788
		789	if ((*dec->cur ^ major) >= 31)
757	if (*dec->cur == 0xe0 \| 31)	790	if (*dec->cur == (0xe0 \| 31))
758	{	791	{
759	++dec->cur;	792	++dec->cur;
760	break;	793	break;
761	}	794	}
		795	else
		796	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		797
763	SV *sv2 = decode_sv (dec);	798	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	799
		800	WANT (len);
		801	sv_catpvn (sv, dec->cur, len);
		802	dec->cur += len;
765	}	803	}
766	}	804	}
767	else	805	else
768	{	806	{
769	STRLEN len = decode_uint (dec);	807	STRLEN len = decode_uint (dec);
770		808
771	WANT (len);	809	WANT (len);
772	sv = newSVpvn (dec->cur, len);	810	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	811	dec->cur += len;
		812
		813	if (ecb_expect_false (dec->stringref)
		814	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		815	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	816	}
775		817
776	if (utf8)	818	if (utf8)
777	SvUTF8_on (sv);	819	SvUTF8_on (sv);
778		820
779	return sv;	821	return sv;
780		822
781	fail:	823	fail:
		824	SvREFCNT_dec (sv);
		825	return &PL_sv_undef;
		826	}
		827
		828	static SV *
		829	decode_tagged (dec_t *dec)
		830	{
		831	SV *sv = 0;
		832	UV tag = decode_uint (dec);
		833
		834	WANT (1);
		835
		836	switch (tag)
		837	{
		838	case CBOR_TAG_MAGIC:
		839	sv = decode_sv (dec);
		840	break;
		841
		842	case CBOR_TAG_INDIRECTION:
		843	sv = newRV_noinc (decode_sv (dec));
		844	break;
		845
		846	case CBOR_TAG_STRINGREF_NAMESPACE:
		847	{
		848	ENTER; SAVETMPS;
		849
		850	SAVESPTR (dec->stringref);
		851	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		852
		853	sv = decode_sv (dec);
		854
		855	FREETMPS; LEAVE;
		856	}
		857	break;
		858
		859	case CBOR_TAG_STRINGREF:
		860	{
		861	if ((*dec->cur >> 5) != 0)
		862	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		863
		864	UV idx = decode_uint (dec);
		865
		866	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		867	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		868
		869	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		870	}
		871	break;
		872
		873	case CBOR_TAG_VALUE_SHAREABLE:
		874	{
		875	if (ecb_expect_false (!dec->shareable))
		876	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		877
		878	sv = newSV (0);
		879	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		880
		881	SV *osv = decode_sv (dec);
		882	sv_setsv (sv, osv);
		883	SvREFCNT_dec_NN (osv);
		884	}
		885	break;
		886
		887	case CBOR_TAG_VALUE_SHAREDREF:
		888	{
		889	if ((*dec->cur >> 5) != 0)
		890	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		891
		892	UV idx = decode_uint (dec);
		893
		894	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		895	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		896
		897	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		898	}
		899	break;
		900
		901	case CBOR_TAG_PERL_OBJECT:
		902	{
		903	sv = decode_sv (dec);
		904
		905	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
		906	ERR ("corrupted CBOR data (non-array perl object)");
		907
		908	AV av = (AV )SvRV (sv);
		909	int len = av_len (av) + 1;
		910	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		911
		912	if (!stash)
		913	ERR ("cannot decode perl-object (package does not exist)");
		914
		915	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		916
		917	if (!method)
		918	ERR ("cannot decode perl-object (package does not have a THAW method)");
		919
		920	dSP;
		921
		922	ENTER; SAVETMPS; PUSHMARK (SP);
		923	EXTEND (SP, len + 1);
		924	// we re-bless the reference to get overload and other niceties right
		925	PUSHs (*av_fetch (av, 0, 1));
		926	PUSHs (sv_cbor);
		927
		928	int i;
		929
		930	for (i = 1; i < len; ++i)
		931	PUSHs (*av_fetch (av, i, 1));
		932
		933	PUTBACK;
		934	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		935	SPAGAIN;
		936
		937	if (SvTRUE (ERRSV))
		938	{
		939	FREETMPS; LEAVE;
		940	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		941	}
		942
		943	SvREFCNT_dec (sv);
		944	sv = SvREFCNT_inc (POPs);
		945
		946	PUTBACK;
		947
		948	FREETMPS; LEAVE;
		949	}
		950	break;
		951
		952	default:
		953	{
		954	sv = decode_sv (dec);
		955
		956	dSP;
		957	ENTER; SAVETMPS; PUSHMARK (SP);
		958	EXTEND (SP, 2);
		959	PUSHs (newSVuv (tag));
		960	PUSHs (sv);
		961
		962	PUTBACK;
		963	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		964	SPAGAIN;
		965
		966	if (SvTRUE (ERRSV))
		967	{
		968	FREETMPS; LEAVE;
		969	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		970	}
		971
		972	if (count)
		973	{
		974	SvREFCNT_dec (sv);
		975	sv = SvREFCNT_inc (POPs);
		976	}
		977	else
		978	{
		979	AV *av = newAV ();
		980	av_push (av, newSVuv (tag));
		981	av_push (av, sv);
		982
		983	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
		984	? cbor_tagged_stash
		985	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		986	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		987	}
		988
		989	PUTBACK;
		990
		991	FREETMPS; LEAVE;
		992	}
		993	break;
		994	}
		995
		996	return sv;
		997
		998	fail:
		999	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1000	return &PL_sv_undef;
783	}	1001	}
784		1002
785	static SV *	1003	static SV *
786	decode_sv (dec_t *dec)	1004	decode_sv (dec_t *dec)
…		…
788	WANT (1);	1006	WANT (1);
789		1007
790	switch (*dec->cur >> 5)	1008	switch (*dec->cur >> 5)
791	{	1009	{
792	case 0: // unsigned int	1010	case 0: // unsigned int
793	//TODO: 64 bit values on 3 2bit perls
794	return newSVuv (decode_uint (dec));	1011	return newSVuv (decode_uint (dec));
795	case 1: // negative int	1012	case 1: // negative int
796	return newSViv (-1 - (IV)decode_uint (dec));	1013	return newSViv (-1 - (IV)decode_uint (dec));
797	case 2: // octet string	1014	case 2: // octet string
798	return decode_str (dec, 0);	1015	return decode_str (dec, 0);
…		…
801	case 4: // array	1018	case 4: // array
802	return decode_av (dec);	1019	return decode_av (dec);
803	case 5: // map	1020	case 5: // map
804	return decode_hv (dec);	1021	return decode_hv (dec);
805	case 6: // tag	1022	case 6: // tag
806	abort ();	1023	return decode_tagged (dec);
807	break;
808	case 7: // misc	1024	case 7: // misc
809	switch (*dec->cur++ & 31)	1025	switch (*dec->cur++ & 31)
810	{	1026	{
811	case 20:	1027	case 20:
812	#if CBOR_SLOW	1028	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1029	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1030	#endif
815	return newSVsv (cbor_false);	1031	return newSVsv (types_false);
816	case 21:	1032	case 21:
817	#if CBOR_SLOW	1033	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1034	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1035	#endif
820	return newSVsv (cbor_true);	1036	return newSVsv (types_true);
821	case 22:	1037	case 22:
822	return newSVsv (&PL_sv_undef);	1038	return newSVsv (&PL_sv_undef);
		1039	case 23:
		1040	#if CBOR_SLOW
		1041	types_error = get_bool ("Types::Serialiser::error");
		1042	#endif
		1043	return newSVsv (types_error);
823		1044
824	case 25:	1045	case 25:
825	// half float
826	abort ();
827	break;	1046	{
		1047	WANT (2);
		1048
		1049	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
		1050	dec->cur += 2;
		1051
		1052	return newSVnv (ecb_binary16_to_float (fp));
		1053	}
828		1054
829	case 26:	1055	case 26:
830	{	1056	{
831	uint32_t fp;	1057	uint32_t fp;
832	WANT (4);	1058	WANT (4);
…		…
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1084	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");
859	}	1085	}
860		1086
861	break;	1087	break;
862	}	1088	}
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		1089
920	fail:	1090	fail:
921	return &PL_sv_undef;	1091	return &PL_sv_undef;
922	}	1092	}
923		1093
924	static SV *	1094	static SV *
925	decode_cbor (SV string, CBOR cbor, char **offset_return)	1095	decode_cbor (SV string, CBOR cbor, char **offset_return)
926	{	1096	{
927	dec_t dec;	1097	dec_t dec = { };
928	SV *sv;	1098	SV *sv;
		1099	STRLEN len;
		1100	char *data = SvPVbyte (string, len);
929		1101
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)	1102	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",	1103	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);	1104	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1105
965	dec.cbor = *cbor;	1106	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1107	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1108	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		1109
974	sv = decode_sv (&dec);	1110	sv = decode_sv (&dec);
975		1111
976	if (offset_return)	1112	if (offset_return)
977	*offset_return = dec.cur;	1113	*offset_return = dec.cur;
978		1114
979	if (!(offset_return \|\| !sv))	1115	if (!(offset_return \|\| !sv))
980	{
981	if (*dec.cur && !dec.err)	1116	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1117	dec.err = "garbage after CBOR object";
		1118
		1119	if (dec.err)
		1120	{
984	SvREFCNT_dec (sv);	1121	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);	1122	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
		1123	}
991		1124
992	sv = sv_2mortal (sv);	1125	sv = sv_2mortal (sv);
993		1126
994	return sv;	1127	return sv;
995	}	1128	}
…		…
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1133	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1134
1002	BOOT:	1135	BOOT:
1003	{	1136	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1137	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1138	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1139
1007	cbor_true = get_bool ("CBOR::XS::true");	1140	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	cbor_false = get_bool ("CBOR::XS::false");	1141	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1142
		1143	types_true = get_bool ("Types::Serialiser::true" );
		1144	types_false = get_bool ("Types::Serialiser::false");
		1145	types_error = get_bool ("Types::Serialiser::error");
		1146
		1147	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1148
		1149	sv_cbor = newSVpv ("CBOR", 0);
		1150	SvREADONLY_on (sv_cbor);
1009	}	1151	}
1010		1152
1011	PROTOTYPES: DISABLE	1153	PROTOTYPES: DISABLE
1012		1154
1013	void CLONE (...)	1155	void CLONE (...)
1014	CODE:	1156	CODE:
1015	cbor_stash = 0;	1157	cbor_stash = 0;
		1158	cbor_tagged_stash = 0;
		1159	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1160	types_boolean_stash = 0;
1017		1161
1018	void new (char *klass)	1162	void new (char *klass)
1019	PPCODE:	1163	PPCODE:
1020	{	1164	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1165	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1173
1030	void shrink (CBOR *self, int enable = 1)	1174	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1175	ALIAS:
1032	shrink = F_SHRINK	1176	shrink = F_SHRINK
1033	allow_unknown = F_ALLOW_UNKNOWN	1177	allow_unknown = F_ALLOW_UNKNOWN
		1178	allow_sharing = F_ALLOW_SHARING
		1179	pack_strings = F_PACK_STRINGS
1034	PPCODE:	1180	PPCODE:
1035	{	1181	{
1036	if (enable)	1182	if (enable)
1037	self->flags \|= ix;	1183	self->flags \|= ix;
1038	else	1184	else
…		…
1043		1189
1044	void get_shrink (CBOR *self)	1190	void get_shrink (CBOR *self)
1045	ALIAS:	1191	ALIAS:
1046	get_shrink = F_SHRINK	1192	get_shrink = F_SHRINK
1047	get_allow_unknown = F_ALLOW_UNKNOWN	1193	get_allow_unknown = F_ALLOW_UNKNOWN
		1194	get_allow_sharing = F_ALLOW_SHARING
		1195	get_pack_strings = F_PACK_STRINGS
1048	PPCODE:	1196	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1197	XPUSHs (boolSV (self->flags & ix));
1050		1198
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1199	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1200	PPCODE:
…		…
1068	CODE:	1216	CODE:
1069	RETVAL = self->max_size;	1217	RETVAL = self->max_size;
1070	OUTPUT:	1218	OUTPUT:
1071	RETVAL	1219	RETVAL
1072		1220
1073	#if 0 //TODO	1221	void filter (CBOR self, SV filter = 0)
1074
1075	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
1076	PPCODE:	1222	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1223	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1224	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1225	XPUSHs (ST (0));
1082	}
1083		1226
1084	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1227	SV get_filter (CBOR self)
1085	PPCODE:	1228	CODE:
1086	{	1229	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1230	OUTPUT:
1088	self->cb_sk_object = newHV ();	1231	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		1232
1108	void encode (CBOR self, SV scalar)	1233	void encode (CBOR self, SV scalar)
1109	PPCODE:	1234	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1235	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1236	XPUSHs (scalar);
…		…
1125	PUSHs (sv);	1250	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1251	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1252	}
1128		1253
1129	void DESTROY (CBOR *self)	1254	void DESTROY (CBOR *self)
1130	CODE:	1255	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1256	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1257
1134	PROTOTYPES: ENABLE	1258	PROTOTYPES: ENABLE
1135		1259
1136	void encode_cbor (SV *scalar)	1260	void encode_cbor (SV *scalar)
1137	PPCODE:	1261	PPCODE:

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs. Revision 1.34 by root, Sat Nov 30 16:19:59 2013 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.34 by root, Sat Nov 30 16:19:59 2013 UTC