ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Compress-LZF/LZF.xs
(Generate patch)

Comparing Compress-LZF/LZF.xs (file contents):
Revision 1.22 by root, Wed Sep 27 19:01:48 2006 UTC vs.
Revision 1.29 by root, Wed Dec 17 00:36:09 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;
… …
222 else 218 else
223 return newSVpvn ("", 0); 219 return newSVpvn ("", 0);
224} 220}
225 221
226static void 222static void
227need_storable(void) 223need_storable (void)
228{ 224{
229#if PATCHLEVEL < 6 225 eval_sv (sv_2mortal (Perl_newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD);
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);
235#endif
236 226
237 storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); 227 storable_mstore = (CV *)SvREFCNT_inc (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 = (CV *)SvREFCNT_inc (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:
… …
253 PROTOTYPE: $$$ 243 PROTOTYPE: $$$
254 PPCODE: 244 PPCODE:
255 SvSetSV (serializer_package , package ); 245 SvSetSV (serializer_package , package );
256 SvSetSV (serializer_mstore , mstore ); 246 SvSetSV (serializer_mstore , mstore );
257 SvSetSV (serializer_mretrieve, mretrieve); 247 SvSetSV (serializer_mretrieve, mretrieve);
258 storable_mstore = 248 SvREFCNT_dec (storable_mstore ); storable_mstore = 0;
259 storable_mretrieve = 0; 249 SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0;
260 250
261void 251void
262compress(data) 252compress(data)
263 SV * data 253 SV * data
264 PROTOTYPE: $ 254 PROTOTYPE: $
… …
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);
288 char *pv;
297 289
298 if (!storable_mstore) 290 if (!storable_mstore)
291 {
292 PUTBACK;
299 need_storable (); 293 need_storable ();
294 SPAGAIN;
295 }
300 296
301 if (deref) 297 if (deref)
302 sv = newRV_noinc (sv); 298 sv = newRV_noinc (sv);
303 299
304 PUSHMARK (SP); 300 PUSHMARK (SP);
305 XPUSHs (sv); 301 XPUSHs (sv);
306 PUTBACK; 302 PUTBACK;
307 303
308 if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) 304 if (1 != call_sv ((SV *)storable_mstore, G_SCALAR))
309 croak ("Storable::mstore didn't return a single scalar"); 305 croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore));
310 306
311 SPAGAIN; 307 SPAGAIN;
312 308
313 sv = POPs; 309 sv = POPs;
310 pv = SvPV_nolen (sv);
314 311
315 if (SvPVX (sv)[0] == MAGIC_R) 312 if (*pv == MAGIC_R)
316 { 313 {
317 if (deref) 314 if (deref)
318 SvPVX (sv)[0] = MAGIC_R_deref; 315 *pv = MAGIC_R_deref;
319 } 316 }
320 else 317 else
321 { 318 {
322 char pfx[2]; 319 char pfx[2];
323 320
… …
353{ 350{
354 STRLEN svlen; 351 STRLEN svlen;
355 int deref = 0; 352 int deref = 0;
356 353
357 SvGETMAGIC (sv); 354 SvGETMAGIC (sv);
358 if (SvPOK (sv) && IN_RANGE (SvPV (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) 355 if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI))
359 { 356 {
360 redo: 357 redo:
361 358
362 switch (SvPVX (sv)[0]) 359 switch (SvPVX (sv)[0])
363 { 360 {
… …
372 croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); 369 croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?");
373 370
374 sv_chop (sv, SvPVX (sv) + 2); 371 sv_chop (sv, SvPVX (sv) + 2);
375 372
376 if (!storable_mstore) 373 if (!storable_mstore)
374 {
375 PUTBACK;
377 need_storable (); 376 need_storable ();
377 SPAGAIN;
378 }
378 379
379 PUSHMARK (SP); 380 PUSHMARK (SP);
380 XPUSHs (sv); 381 XPUSHs (sv);
381 PUTBACK; 382 PUTBACK;
382 383
383 if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) 384 if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR))
384 croak ("Storable::mstore didn't return a single scalar"); 385 croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve));
385 386
386 SPAGAIN; 387 SPAGAIN;
387 388
388 if (deref) 389 if (deref)
389 SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); 390 SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs))));
… …
416 goto redo; 417 goto redo;
417 418
418 case MAGIC_R: 419 case MAGIC_R:
419 handle_MAGIC_R: 420 handle_MAGIC_R:
420 if (!storable_mstore) 421 if (!storable_mstore)
422 {
423 PUTBACK;
421 need_storable (); 424 need_storable ();
425 SPAGAIN;
426 }
422 427
423 PUSHMARK (SP); 428 PUSHMARK (SP);
424 XPUSHs (sv); 429 XPUSHs (sv);
425 PUTBACK; 430 PUTBACK;
426 431
427 if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) 432 if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR))
428 croak ("Storable::mstore didn't return a single scalar"); 433 croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve));
429 434
430 SPAGAIN; 435 SPAGAIN;
431 436
432 if (deref) 437 if (deref)
433 { 438 {

Diff Legend

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