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/cvs/Compress-LZF/LZF.xs
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Comparing Compress-LZF/LZF.xs (file contents):
Revision 1.22 by root, Wed Sep 27 19:01:48 2006 UTC vs.
Revision 1.25 by root, Wed Jan 9 20:41:18 2008 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5/* try to be compatible with older perls */ 5#define LZF_STANDALONE 1
6/* SvPV_nolen() macro first defined in 5.005_55 */ 6#define LZF_STATE_ARG 1
7/* this is slow, not threadsafe, but works */
8#include "patchlevel.h"
9#if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55))
10static STRLEN nolen_na;
11# define SvPV_nolen(sv) SvPV ((sv), nolen_na)
12#endif
13#if PATCHLEVEL < 6
14# define call_sv perl_call_sv
15#endif
16 7
17#include "lzf_c.c" 8#include "lzf_c.c"
18#include "lzf_d.c" 9#include "lzf_d.c"
19 10
20/* we re-use the storable header for our purposes */ 11/* we re-use the storable header for our purposes */
… …
41#endif 32#endif
42 33
43static SV * 34static SV *
44compress_sv (SV *data, char cprepend, int uprepend) 35compress_sv (SV *data, char cprepend, int uprepend)
45{ 36{
37 LZF_STATE *state;
46 STRLEN usize, csize; 38 STRLEN usize, csize;
47 char *src = (char *)SvPV (data, usize); 39 char *src = (char *)SvPVbyte (data, usize);
48 40
49 if (usize) 41 if (usize)
50 { 42 {
51 SV *ret = NEWSV (0, usize + 1); 43 SV *ret = NEWSV (0, usize + 1);
52 unsigned char *dst; 44 unsigned char *dst;
… …
98 dst[skip++] = (( usize & 0x3f) | 0x80); 90 dst[skip++] = (( usize & 0x3f) | 0x80);
99 } 91 }
100 else 92 else
101 croak ("compress can only compress up to %ld bytes", 0x7fffffffL); 93 croak ("compress can only compress up to %ld bytes", 0x7fffffffL);
102 94
95 New (0, state, 1, LZF_STATE);
96 if (!state)
97 croak ("Compress::LZF unable to allocate memory for compression state");
98
103 /* 11 bytes is the smallest compressible string */ 99 /* 11 bytes is the smallest compressible string */
104 csize = usize < 11 ? 0 : 100 csize = usize < 11 ? 0 :
105 lzf_compress (src, usize, 101 lzf_compress (src, usize, dst + skip, usize - skip, *state);
106 dst + skip, 102
107 usize - skip); 103 Safefree (state);
108 104
109 if (csize) 105 if (csize)
110 { 106 {
111 SvCUR_set (ret, csize + skip); 107 SvCUR_set (ret, csize + skip);
112 } 108 }
… …
132 128
133static SV * 129static SV *
134decompress_sv (SV *data, int skip) 130decompress_sv (SV *data, int skip)
135{ 131{
136 STRLEN usize, csize; 132 STRLEN usize, csize;
137 unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; 133 unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip;
138 134
139 if (csize) 135 if (csize)
140 { 136 {
141 void *dst; 137 void *dst;
142 SV *ret; 138 SV *ret;
… …
224} 220}
225 221
226static void 222static void
227need_storable(void) 223need_storable(void)
228{ 224{
229#if PATCHLEVEL < 6
230 char req[8192];
231 sprintf (req, "require %s;", SvPV_nolen (serializer_package));
232 perl_eval_pv (req, 1);
233#else
234 load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); 225 load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv);
235#endif
236 226
237 storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); 227 storable_mstore = GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV));
238 storable_mretrieve = GvCV (gv_fetchpv (SvPV_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); 228 storable_mretrieve = GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV));
239} 229}
240 230
241MODULE = Compress::LZF PACKAGE = Compress::LZF 231MODULE = Compress::LZF PACKAGE = Compress::LZF
242 232
243BOOT: 233BOOT:
… …
284 SvGETMAGIC (sv); 274 SvGETMAGIC (sv);
285 275
286 if (!SvOK (sv)) 276 if (!SvOK (sv))
287 XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ 277 XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */
288 else if (SvROK (sv) 278 else if (SvROK (sv)
279 || SvUTF8 (sv)
289 || (SvTYPE(sv) != SVt_IV 280 || (SvTYPE(sv) != SVt_IV
290 && SvTYPE(sv) != SVt_NV 281 && SvTYPE(sv) != SVt_NV
291 && SvTYPE(sv) != SVt_PV 282 && SvTYPE(sv) != SVt_PV
292 && SvTYPE(sv) != SVt_PVIV 283 && SvTYPE(sv) != SVt_PVIV
293 && SvTYPE(sv) != SVt_PVNV 284 && SvTYPE(sv) != SVt_PVNV
294 && SvTYPE(sv) != SVt_PVMG)) /* mstore */ 285 && SvTYPE(sv) != SVt_PVMG)) /* mstore */
295 { 286 {
296 int deref = !SvROK (sv); 287 int deref = !SvROK (sv);
297 288
298 if (!storable_mstore) 289 if (!storable_mstore)
290 {
291 PUTBACK;
299 need_storable (); 292 need_storable ();
293 SPAGAIN;
294 }
300 295
301 if (deref) 296 if (deref)
302 sv = newRV_noinc (sv); 297 sv = newRV_noinc (sv);
303 298
304 PUSHMARK (SP); 299 PUSHMARK (SP);
… …
353{ 348{
354 STRLEN svlen; 349 STRLEN svlen;
355 int deref = 0; 350 int deref = 0;
356 351
357 SvGETMAGIC (sv); 352 SvGETMAGIC (sv);
358 if (SvPOK (sv) && IN_RANGE (SvPV (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) 353 if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI))
359 { 354 {
360 redo: 355 redo:
361 356
362 switch (SvPVX (sv)[0]) 357 switch (SvPVX (sv)[0])
363 { 358 {
… …
372 croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); 367 croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?");
373 368
374 sv_chop (sv, SvPVX (sv) + 2); 369 sv_chop (sv, SvPVX (sv) + 2);
375 370
376 if (!storable_mstore) 371 if (!storable_mstore)
372 {
373 PUTBACK;
377 need_storable (); 374 need_storable ();
375 SPAGAIN;
376 }
378 377
379 PUSHMARK (SP); 378 PUSHMARK (SP);
380 XPUSHs (sv); 379 XPUSHs (sv);
381 PUTBACK; 380 PUTBACK;
382 381
… …
416 goto redo; 415 goto redo;
417 416
418 case MAGIC_R: 417 case MAGIC_R:
419 handle_MAGIC_R: 418 handle_MAGIC_R:
420 if (!storable_mstore) 419 if (!storable_mstore)
420 {
421 PUTBACK;
421 need_storable (); 422 need_storable ();
423 SPAGAIN;
424 }
422 425
423 PUSHMARK (SP); 426 PUSHMARK (SP);
424 XPUSHs (sv); 427 XPUSHs (sv);
425 PUTBACK; 428 PUTBACK;
426 429

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