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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs.
Revision 1.27 by root, Fri Nov 22 15:28:38 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	// compatibility with perl <5.18
		15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		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
		25	// known tags
		26	enum cbor_tag
		27	{
		28	// inofficial extensions (pending iana registration)
		29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object
		30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object
		31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing
		32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing
		33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // 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
		36
		37	// rfc7049
		38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		40	CBOR_TAG_POS_BIGNUM = 2, // byte string
		41	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		43	CBOR_TAG_BIGFLOAT = 5, // array
		44
		45	CBOR_TAG_CONV_B64U = 21, // base64url, any
		46	CBOR_TAG_CONV_B64 = 22, // base64, any
		47	CBOR_TAG_CONV_HEX = 23, // base16, any
		48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		49
		50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		55
		56	CBOR_TAG_MAGIC = 55799 // self-describe cbor
		57	};
		58
14	#define F_SHRINK 0x00000200UL	59	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	60	#define F_ALLOW_UNKNOWN 0x00000002UL
		61	#define F_ALLOW_SHARING 0x00000004UL //TODO
		62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO
16		63
17	#define INIT_SIZE 32 // initial scalar size to be allocated	64	#define INIT_SIZE 32 // initial scalar size to be allocated
18		65
19	#define SB do {	66	#define SB do {
20	#define SE } while (0)	67	#define SE } while (0)
…		…
31	#else	78	#else
32	# define CBOR_SLOW 0	79	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	80	# define CBOR_STASH cbor_stash
34	#endif	81	#endif
35		82
36	static HV cbor_stash, cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	83	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
37	static SV cbor_true, cbor_false;	84	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
38		85
39	typedef struct {	86	typedef struct {
40	U32 flags;	87	U32 flags;
41	U32 max_depth;	88	U32 max_depth;
42	STRLEN max_size;	89	STRLEN max_size;
		90	SV *filter;
43	} CBOR;	91	} CBOR;
44		92
45	ecb_inline void	93	ecb_inline void
46	cbor_init (CBOR *cbor)	94	cbor_init (CBOR *cbor)
47	{	95	{
48	Zero (cbor, 1, CBOR);	96	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	97	cbor->max_depth = 512;
		98	}
		99
		100	ecb_inline void
		101	cbor_free (CBOR *cbor)
		102	{
		103	SvREFCNT_dec (cbor->filter);
50	}	104	}
51		105
52	/////////////////////////////////////////////////////////////////////////////	106	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	107	// utility functions
54		108
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	130	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	131	#endif
78	}	132	}
79	}	133	}
80		134
81	/////////////////////////////////////////////////////////////////////////////	135	// minimum length of a string to be registered for stringref
82	// fp hell	136	ecb_inline int
83		137	minimum_string_length (UV idx)
84	//TODO	138	{
		139	return idx > 23
		140	? idx > 0xffU
		141	? idx > 0xffffU
		142	? idx > 0xffffffffU
		143	? 7
		144	: 6
		145	: 5
		146	: 4
		147	: 3;
		148	}
85		149
86	/////////////////////////////////////////////////////////////////////////////	150	/////////////////////////////////////////////////////////////////////////////
87	// encoder	151	// encoder
88		152
89	// structure used for encoding CBOR	153	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	156	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	157	char *end; // SvEND (sv)
94	SV *sv; // result scalar	158	SV *sv; // result scalar
95	CBOR cbor;	159	CBOR cbor;
96	U32 depth; // recursion level	160	U32 depth; // recursion level
		161	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		162	UV stringref_idx;
		163	HV *shareable; // ptr => index, or 0
		164	UV shareable_idx;
97	} enc_t;	165	} enc_t;
98		166
99	ecb_inline void	167	ecb_inline void
100	need (enc_t *enc, STRLEN len)	168	need (enc_t *enc, STRLEN len)
101	{	169	{
…		…
153	*enc->cur++ = len >> 8;	221	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	222	*enc->cur++ = len;
155	}	223	}
156	}	224	}
157		225
		226	ecb_inline void
		227	encode_tag (enc_t *enc, UV tag)
		228	{
		229	encode_uint (enc, 0xc0, tag);
		230	}
		231
158	static void	232	static void
159	encode_str (enc_t enc, int utf8, char str, STRLEN len)	233	encode_str (enc_t enc, int utf8, char str, STRLEN len)
160	{	234	{
		235	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))
		236	{
		237	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		238
		239	if (SvOK (*svp))
		240	{
		241	// already registered, use stringref
		242	encode_tag (enc, CBOR_TAG_STRINGREF);
		243	encode_uint (enc, 0x00, SvUV (*svp));
		244	return;
		245	}
		246	else if (len >= minimum_string_length (enc->stringref_idx))
		247	{
		248	// register only
		249	sv_setuv (*svp, enc->stringref_idx);
		250	++enc->stringref_idx;
		251	}
		252	}
		253
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	254	encode_uint (enc, utf8 ? 0x60 : 0x40, len);
162	need (enc, len);	255	need (enc, len);
163	memcpy (enc->cur, str, len);	256	memcpy (enc->cur, str, len);
164	enc->cur += len;	257	enc->cur += len;
165	}	258	}
…		…
223		316
224	// encode objects, arrays and special \0=false and \1=true values.	317	// encode objects, arrays and special \0=false and \1=true values.
225	static void	318	static void
226	encode_rv (enc_t enc, SV sv)	319	encode_rv (enc_t enc, SV sv)
227	{	320	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	321	SvGETMAGIC (sv);
		322
		323	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
		324	&& ecb_expect_false (SvREFCNT (sv) > 1))
		325	{
		326	if (!enc->shareable)
		327	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		328
		329	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		330
		331	if (SvOK (*svp))
		332	{
		333	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		334	encode_uint (enc, 0x00, SvUV (*svp));
		335	return;
		336	}
		337	else
		338	{
		339	sv_setuv (*svp, enc->shareable_idx);
		340	++enc->shareable_idx;
		341	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		342	}
		343	}
		344
231	svt = SvTYPE (sv);	345	svtype svt = SvTYPE (sv);
232		346
233	if (ecb_expect_false (SvOBJECT (sv)))	347	if (ecb_expect_false (SvOBJECT (sv)))
234	{	348	{
235	HV *boolean_stash = !CBOR_SLOW \|\| cbor_boolean_stash	349	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
236	? cbor_boolean_stash	350	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	351	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		352	HV *error_stash = !CBOR_SLOW \|\| types_error_stash
		353	? types_error_stash
		354	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	355	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
239	? cbor_tagged_stash	356	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	357	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		358
		359	HV *stash = SvSTASH (sv);
		360	GV *method;
		361
242	if (SvSTASH (sv) == boolean_stash)	362	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	363	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);
		364	else if (stash == error_stash)
		365	encode_ch (enc, 0xe0 \| 23);
244	else if (SvSTASH (sv) == tagged_stash)	366	else if (stash == tagged_stash)
245	{	367	{
246	if (svt != SVt_PVAV)	368	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	369	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		370
249	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	371	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));
250	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	372	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
251	}	373	}
		374	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		375	{
		376	dSP;
		377
		378	ENTER; SAVETMPS; PUSHMARK (SP);
		379	// we re-bless the reference to get overload and other niceties right
		380	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		381
		382	PUTBACK;
		383	// G_SCALAR ensures that return value is 1
		384	call_sv ((SV *)GvCV (method), G_SCALAR);
		385	SPAGAIN;
		386
		387	// catch this surprisingly common error
		388	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		389	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
		390
		391	encode_sv (enc, POPs);
		392
		393	PUTBACK;
		394
		395	FREETMPS; LEAVE;
		396	}
		397	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		398	{
		399	dSP;
		400
		401	ENTER; SAVETMPS; PUSHMARK (SP);
		402	EXTEND (SP, 2);
		403	// we re-bless the reference to get overload and other niceties right
		404	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		405	PUSHs (sv_cbor);
		406
		407	PUTBACK;
		408	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		409	SPAGAIN;
		410
		411	// catch this surprisingly common error
		412	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		413	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		414
		415	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		416	encode_uint (enc, 0x80, count + 1);
		417	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		418
		419	while (count)
		420	encode_sv (enc, SP[1 - count--]);
		421
		422	PUTBACK;
		423
		424	FREETMPS; LEAVE;
		425	}
252	else	426	else
253	{
254	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
263
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);
267	SPAGAIN;
268
269	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
272
273	sv = POPs;
274	PUTBACK;
275
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;
279	}
280	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	427	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	428	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	429	}
285	else if (svt == SVt_PVHV)	430	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	431	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	432	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	433	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 \| 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 \| 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 \| 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 \| 23);
306	else	434	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	435	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	436	encode_tag (enc, CBOR_TAG_INDIRECTION);
		437	encode_sv (enc, sv);
		438	}
309	}	439	}
310		440
311	static void	441	static void
312	encode_nv (enc_t enc, SV sv)	442	encode_nv (enc_t enc, SV sv)
313	{	443	{
…		…
378	}	508	}
379		509
380	static SV *	510	static SV *
381	encode_cbor (SV scalar, CBOR cbor)	511	encode_cbor (SV scalar, CBOR cbor)
382	{	512	{
383	enc_t enc;	513	enc_t enc = { };
384		514
385	enc.cbor = *cbor;	515	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	516	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	517	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	518	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		519
391	SvPOK_only (enc.sv);	520	SvPOK_only (enc.sv);
		521
		522	if (cbor->flags & F_ALLOW_STRINGREF)
		523	{
		524	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		525	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		526	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		527	}
		528
392	encode_sv (&enc, scalar);	529	encode_sv (&enc, scalar);
393		530
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	531	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	532	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		533
…		…
410	U8 *end; // end of input string	547	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	548	const char *err; // parse error, if != 0
412	CBOR cbor;	549	CBOR cbor;
413	U32 depth; // recursion depth	550	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	551	U32 maxdepth; // recursion depth limit
		552	AV *shareable;
		553	AV *stringref;
		554	SV *decode_tagged;
415	} dec_t;	555	} dec_t;
416		556
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	557	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
418		558
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	559	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
513	SvREFCNT_dec (av);	653	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	654	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	655	return &PL_sv_undef;
516	}	656	}
517		657
		658	static void
		659	decode_he (dec_t dec, HV hv)
		660	{
		661	// for speed reasons, we specialcase single-string
		662	// byte or utf-8 strings as keys, but only when !stringref
		663
		664	if (ecb_expect_true (!dec->stringref))
		665	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)
		666	{
		667	I32 len = decode_uint (dec);
		668	char key = (char )dec->cur;
		669
		670	dec->cur += len;
		671
		672	if (ecb_expect_false (dec->stringref))
		673	av_push (dec->stringref, newSVpvn (key, len));
		674
		675	hv_store (hv, key, len, decode_sv (dec), 0);
		676
		677	return;
		678	}
		679	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)
		680	{
		681	I32 len = decode_uint (dec);
		682	char key = (char )dec->cur;
		683
		684	dec->cur += len;
		685
		686	if (ecb_expect_false (dec->stringref))
		687	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));
		688
		689	hv_store (hv, key, -len, decode_sv (dec), 0);
		690
		691	return;
		692	}
		693
		694	SV *k = decode_sv (dec);
		695	SV *v = decode_sv (dec);
		696
		697	hv_store_ent (hv, k, v, 0);
		698	SvREFCNT_dec (k);
		699	}
		700
518	static SV *	701	static SV *
519	decode_hv (dec_t *dec)	702	decode_hv (dec_t *dec)
520	{	703	{
521	HV *hv = newHV ();	704	HV *hv = newHV ();
522		705
…		…
534	{	717	{
535	++dec->cur;	718	++dec->cur;
536	break;	719	break;
537	}	720	}
538		721
539	SV *k = decode_sv (dec);	722	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	723	}
544	}	724	}
545	else	725	else
546	{	726	{
547	int len = decode_uint (dec);	727	int pairs = decode_uint (dec);
548		728
549	while (len--)	729	while (pairs--)
550	{	730	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	731	}
557		732
558	DEC_DEC_DEPTH;	733	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	734	return newRV_noinc ((SV *)hv);
560		735
…		…
594	STRLEN len = decode_uint (dec);	769	STRLEN len = decode_uint (dec);
595		770
596	WANT (len);	771	WANT (len);
597	sv = newSVpvn (dec->cur, len);	772	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	773	dec->cur += len;
		774
		775	if (ecb_expect_false (dec->stringref)
		776	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		777	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	778	}
600		779
601	if (utf8)	780	if (utf8)
602	SvUTF8_on (sv);	781	SvUTF8_on (sv);
603		782
…		…
609	}	788	}
610		789
611	static SV *	790	static SV *
612	decode_tagged (dec_t *dec)	791	decode_tagged (dec_t *dec)
613	{	792	{
		793	SV *sv = 0;
614	UV tag = decode_uint (dec);	794	UV tag = decode_uint (dec);
		795
		796	WANT (1);
		797
		798	switch (tag)
		799	{
		800	case CBOR_TAG_MAGIC:
		801	sv = decode_sv (dec);
		802	break;
		803
		804	case CBOR_TAG_INDIRECTION:
		805	sv = newRV_noinc (decode_sv (dec));
		806	break;
		807
		808	case CBOR_TAG_STRINGREF_NAMESPACE:
		809	{
		810	ENTER; SAVETMPS;
		811
		812	SAVESPTR (dec->stringref);
		813	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		814
		815	sv = decode_sv (dec);
		816
		817	FREETMPS; LEAVE;
		818	}
		819	break;
		820
		821	case CBOR_TAG_STRINGREF:
		822	{
		823	if ((*dec->cur >> 5) != 0)
		824	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		825
		826	UV idx = decode_uint (dec);
		827
		828	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		829	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		830
		831	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		832	}
		833	break;
		834
		835	case CBOR_TAG_VALUE_SHAREABLE:
		836	{
		837	if (ecb_expect_false (!dec->shareable))
		838	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		839
		840	sv = newSV (0);
		841	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		842
615	SV *sv = decode_sv (dec);	843	SV *osv = decode_sv (dec);
		844	sv_setsv (sv, osv);
		845	SvREFCNT_dec_NN (osv);
		846	}
		847	break;
616		848
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	849	case CBOR_TAG_VALUE_SHAREDREF:
		850	{
		851	if ((*dec->cur >> 5) != 0)
		852	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		853
		854	UV idx = decode_uint (dec);
		855
		856	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		857	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		858
		859	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		860	}
		861	break;
		862
		863	case CBOR_TAG_PERL_OBJECT:
		864	{
		865	sv = decode_sv (dec);
		866
		867	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
		868	ERR ("corrupted CBOR data (non-array perl object)");
		869
		870	AV av = (AV )SvRV (sv);
		871	int len = av_len (av) + 1;
		872	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		873
		874	if (!stash)
		875	ERR ("cannot decode perl-object (package does not exist)");
		876
		877	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		878
		879	if (!method)
		880	ERR ("cannot decode perl-object (package does not have a THAW method)");
		881
		882	dSP;
		883
		884	ENTER; SAVETMPS; PUSHMARK (SP);
		885	EXTEND (SP, len + 1);
		886	// we re-bless the reference to get overload and other niceties right
		887	PUSHs (*av_fetch (av, 0, 1));
		888	PUSHs (sv_cbor);
		889
		890	int i;
		891
		892	for (i = 1; i < len; ++i)
		893	PUSHs (*av_fetch (av, i, 1));
		894
		895	PUTBACK;
		896	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		897	SPAGAIN;
		898
		899	if (SvTRUE (ERRSV))
		900	{
		901	FREETMPS; LEAVE;
		902	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		903	}
		904
		905	SvREFCNT_dec (sv);
		906	sv = SvREFCNT_inc (POPs);
		907
		908	PUTBACK;
		909
		910	FREETMPS; LEAVE;
		911	}
		912	break;
		913
		914	default:
		915	{
		916	sv = decode_sv (dec);
		917
		918	dSP;
		919	ENTER; SAVETMPS; PUSHMARK (SP);
		920	EXTEND (SP, 2);
		921	PUSHs (newSVuv (tag));
		922	PUSHs (sv);
		923
		924	PUTBACK;
		925	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		926	SPAGAIN;
		927
		928	if (SvTRUE (ERRSV))
		929	{
		930	FREETMPS; LEAVE;
		931	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		932	}
		933
		934	if (count)
		935	{
		936	SvREFCNT_dec (sv);
		937	sv = SvREFCNT_inc (POPs);
		938	}
		939	else
		940	{
		941	AV *av = newAV ();
		942	av_push (av, newSVuv (tag));
		943	av_push (av, sv);
		944
		945	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
		946	? cbor_tagged_stash
		947	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		948	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		949	}
		950
		951	PUTBACK;
		952
		953	FREETMPS; LEAVE;
		954	}
		955	break;
		956	}
		957
618	return sv;	958	return sv;
619		959
620	AV *av = newAV ();	960	fail:
621	av_push (av, newSVuv (tag));	961	SvREFCNT_dec (sv);
622	av_push (av, sv);	962	return &PL_sv_undef;
623	return newRV_noinc ((SV *)av);
624	}	963	}
625		964
626	static SV *	965	static SV *
627	decode_sv (dec_t *dec)	966	decode_sv (dec_t *dec)
628	{	967	{
…		…
647	case 7: // misc	986	case 7: // misc
648	switch (*dec->cur++ & 31)	987	switch (*dec->cur++ & 31)
649	{	988	{
650	case 20:	989	case 20:
651	#if CBOR_SLOW	990	#if CBOR_SLOW
652	cbor_false = get_bool ("CBOR::XS::false");	991	types_false = get_bool ("Types::Serialiser::false");
653	#endif	992	#endif
654	return newSVsv (cbor_false);	993	return newSVsv (types_false);
655	case 21:	994	case 21:
656	#if CBOR_SLOW	995	#if CBOR_SLOW
657	cbor_true = get_bool ("CBOR::XS::true");	996	types_true = get_bool ("Types::Serialiser::true");
658	#endif	997	#endif
659	return newSVsv (cbor_true);	998	return newSVsv (types_true);
660	case 22:	999	case 22:
661	return newSVsv (&PL_sv_undef);	1000	return newSVsv (&PL_sv_undef);
		1001	case 23:
		1002	#if CBOR_SLOW
		1003	types_error = get_bool ("Types::Serialiser::error");
		1004	#endif
		1005	return newSVsv (types_error);
662		1006
663	case 25:	1007	case 25:
664	{	1008	{
665	WANT (2);	1009	WANT (2);
666		1010
…		…
710	}	1054	}
711		1055
712	static SV *	1056	static SV *
713	decode_cbor (SV string, CBOR cbor, char **offset_return)	1057	decode_cbor (SV string, CBOR cbor, char **offset_return)
714	{	1058	{
715	dec_t dec;	1059	dec_t dec = { };
716	SV *sv;	1060	SV *sv;
		1061	STRLEN len;
		1062	char *data = SvPVbyte (string, len);
717		1063
718	/* work around bugs in 5.10 where manipulating magic values
719	* makes perl ignore the magic in subsequent accesses.
720	* also make a copy of non-PV values, to get them into a clean
721	* state (SvPV should do that, but it's buggy, see below).
722	*/
723	/SvGETMAGIC (string);/
724	if (SvMAGICAL (string) \|\| !SvPOK (string))
725	string = sv_2mortal (newSVsv (string));
726
727	SvUPGRADE (string, SVt_PV);
728
729	/* work around a bug in perl 5.10, which causes SvCUR to fail an
730	* assertion with -DDEBUGGING, although SvCUR is documented to
731	* return the xpv_cur field which certainly exists after upgrading.
732	* according to nicholas clark, calling SvPOK fixes this.
733	* But it doesn't fix it, so try another workaround, call SvPV_nolen
734	* and hope for the best.
735	* Damnit, SvPV_nolen still trips over yet another assertion. This
736	* assertion business is seriously broken, try yet another workaround
737	* for the broken -DDEBUGGING.
738	*/
739	{
740	#ifdef DEBUGGING
741	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
742	#else
743	STRLEN offset = SvCUR (string);
744	#endif
745
746	if (offset > cbor->max_size && cbor->max_size)	1064	if (len > cbor->max_size && cbor->max_size)
747	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1065	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
748	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1066	(unsigned long)len, (unsigned long)cbor->max_size);
749	}
750
751	sv_utf8_downgrade (string, 0);
752		1067
753	dec.cbor = *cbor;	1068	dec.cbor = *cbor;
754	dec.cur = (U8 *)SvPVX (string);	1069	dec.cur = (U8 *)data;
755	dec.end = (U8 *)SvEND (string);	1070	dec.end = (U8 *)data + len;
756	dec.err = 0;
757	dec.depth = 0;
758		1071
759	sv = decode_sv (&dec);	1072	sv = decode_sv (&dec);
760		1073
761	if (offset_return)	1074	if (offset_return)
762	*offset_return = dec.cur;	1075	*offset_return = dec.cur;
…		…
766	dec.err = "garbage after CBOR object";	1079	dec.err = "garbage after CBOR object";
767		1080
768	if (dec.err)	1081	if (dec.err)
769	{	1082	{
770	SvREFCNT_dec (sv);	1083	SvREFCNT_dec (sv);
771	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1084	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
772	}	1085	}
773		1086
774	sv = sv_2mortal (sv);	1087	sv = sv_2mortal (sv);
775		1088
776	return sv;	1089	return sv;
…		…
782	MODULE = CBOR::XS PACKAGE = CBOR::XS	1095	MODULE = CBOR::XS PACKAGE = CBOR::XS
783		1096
784	BOOT:	1097	BOOT:
785	{	1098	{
786	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1099	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
787	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
788	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1100	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
789		1101
790	cbor_true = get_bool ("CBOR::XS::true");	1102	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
791	cbor_false = get_bool ("CBOR::XS::false");	1103	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1104
		1105	types_true = get_bool ("Types::Serialiser::true" );
		1106	types_false = get_bool ("Types::Serialiser::false");
		1107	types_error = get_bool ("Types::Serialiser::error");
		1108
		1109	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1110
		1111	sv_cbor = newSVpv ("CBOR", 0);
		1112	SvREADONLY_on (sv_cbor);
792	}	1113	}
793		1114
794	PROTOTYPES: DISABLE	1115	PROTOTYPES: DISABLE
795		1116
796	void CLONE (...)	1117	void CLONE (...)
797	CODE:	1118	CODE:
798	cbor_stash = 0;	1119	cbor_stash = 0;
799	cbor_boolean_stash = 0;
800	cbor_tagged_stash = 0;	1120	cbor_tagged_stash = 0;
		1121	types_error_stash = 0;
		1122	types_boolean_stash = 0;
801		1123
802	void new (char *klass)	1124	void new (char *klass)
803	PPCODE:	1125	PPCODE:
804	{	1126	{
805	SV *pv = NEWSV (0, sizeof (CBOR));	1127	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
813		1135
814	void shrink (CBOR *self, int enable = 1)	1136	void shrink (CBOR *self, int enable = 1)
815	ALIAS:	1137	ALIAS:
816	shrink = F_SHRINK	1138	shrink = F_SHRINK
817	allow_unknown = F_ALLOW_UNKNOWN	1139	allow_unknown = F_ALLOW_UNKNOWN
		1140	allow_sharing = F_ALLOW_SHARING
		1141	allow_stringref = F_ALLOW_STRINGREF
818	PPCODE:	1142	PPCODE:
819	{	1143	{
820	if (enable)	1144	if (enable)
821	self->flags \|= ix;	1145	self->flags \|= ix;
822	else	1146	else
…		…
827		1151
828	void get_shrink (CBOR *self)	1152	void get_shrink (CBOR *self)
829	ALIAS:	1153	ALIAS:
830	get_shrink = F_SHRINK	1154	get_shrink = F_SHRINK
831	get_allow_unknown = F_ALLOW_UNKNOWN	1155	get_allow_unknown = F_ALLOW_UNKNOWN
		1156	get_allow_sharing = F_ALLOW_SHARING
		1157	get_allow_stringref = F_ALLOW_STRINGREF
832	PPCODE:	1158	PPCODE:
833	XPUSHs (boolSV (self->flags & ix));	1159	XPUSHs (boolSV (self->flags & ix));
834		1160
835	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1161	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
836	PPCODE:	1162	PPCODE:
…		…
852	CODE:	1178	CODE:
853	RETVAL = self->max_size;	1179	RETVAL = self->max_size;
854	OUTPUT:	1180	OUTPUT:
855	RETVAL	1181	RETVAL
856		1182
857	#if 0 //TODO	1183	void filter (CBOR self, SV filter = 0)
858
859	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
860	PPCODE:	1184	PPCODE:
861	{
862	SvREFCNT_dec (self->cb_object);	1185	SvREFCNT_dec (self->filter);
863	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1186	self->filter = filter ? newSVsv (filter) : filter;
864
865	XPUSHs (ST (0));	1187	XPUSHs (ST (0));
866	}
867		1188
868	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1189	SV get_filter (CBOR self)
869	PPCODE:	1190	CODE:
870	{	1191	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
871	if (!self->cb_sk_object)	1192	OUTPUT:
872	self->cb_sk_object = newHV ();	1193	RETVAL
873
874	if (SvOK (cb))
875	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
876	else
877	{
878	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
879
880	if (!HvKEYS (self->cb_sk_object))
881	{
882	SvREFCNT_dec (self->cb_sk_object);
883	self->cb_sk_object = 0;
884	}
885	}
886
887	XPUSHs (ST (0));
888	}
889
890	#endif
891		1194
892	void encode (CBOR self, SV scalar)	1195	void encode (CBOR self, SV scalar)
893	PPCODE:	1196	PPCODE:
894	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1197	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
895	XPUSHs (scalar);	1198	XPUSHs (scalar);
…		…
908	EXTEND (SP, 2);	1211	EXTEND (SP, 2);
909	PUSHs (sv);	1212	PUSHs (sv);
910	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1213	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
911	}	1214	}
912		1215
913	#if 0
914
915	void DESTROY (CBOR *self)	1216	void DESTROY (CBOR *self)
916	CODE:	1217	PPCODE:
917	SvREFCNT_dec (self->cb_sk_object);	1218	cbor_free (self);
918	SvREFCNT_dec (self->cb_object);
919
920	#endif
921		1219
922	PROTOTYPES: ENABLE	1220	PROTOTYPES: ENABLE
923		1221
924	void encode_cbor (SV *scalar)	1222	void encode_cbor (SV *scalar)
925	PPCODE:	1223	PPCODE:

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs. Revision 1.27 by root, Fri Nov 22 15:28:38 2013 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs.
Revision 1.27 by root, Fri Nov 22 15:28:38 2013 UTC