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 */ |
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8 | #include "patchlevel.h" |
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9 | #if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55)) |
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10 | static STRLEN nolen_na; |
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11 | # define SvPV_nolen(sv) SvPV ((sv), nolen_na) |
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12 | #endif |
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13 | #if PATCHLEVEL < 6 |
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14 | # define call_sv perl_call_sv |
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15 | #endif |
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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 | |
43 | static SV * |
34 | static SV * |
44 | compress_sv (SV *data, char cprepend, int uprepend) |
35 | compress_sv (SV *data, char cprepend, int uprepend) |
45 | { |
36 | { |
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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 | |
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95 | New (0, state, 1, LZF_STATE); |
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96 | if (!state) |
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97 | croak ("Compress::LZF unable to allocate memory for compression state"); |
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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 | |
133 | static SV * |
129 | static SV * |
134 | decompress_sv (SV *data, int skip) |
130 | decompress_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; |
… | |
… | |
199 | ret = NEWSV (0, usize); |
195 | ret = NEWSV (0, usize); |
200 | SvPOK_only (ret); |
196 | SvPOK_only (ret); |
201 | dst = SvPVX (ret); |
197 | dst = SvPVX (ret); |
202 | |
198 | |
203 | if (lzf_decompress (src, csize, dst, usize) != usize) |
199 | if (lzf_decompress (src, csize, dst, usize) != usize) |
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200 | { |
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201 | SvREFCNT_dec (ret); |
204 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
202 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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203 | } |
205 | } |
204 | } |
206 | else |
205 | else |
207 | { |
206 | { |
208 | usize = csize - 1; |
207 | usize = csize - 1; |
209 | ret = NEWSV (0, usize | 1); |
208 | ret = NEWSV (0, usize | 1); |
… | |
… | |
219 | else |
218 | else |
220 | return newSVpvn ("", 0); |
219 | return newSVpvn ("", 0); |
221 | } |
220 | } |
222 | |
221 | |
223 | static void |
222 | static void |
224 | need_storable(void) |
223 | need_storable (void) |
225 | { |
224 | { |
226 | #if PATCHLEVEL < 6 |
225 | eval_sv (sv_2mortal (newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
227 | char req[8192]; |
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228 | sprintf (req, "require %s;", SvPV_nolen (serializer_package)); |
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229 | perl_eval_pv (req, 1); |
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230 | #else |
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231 | load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); |
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232 | #endif |
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233 | |
226 | |
234 | 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))); |
235 | 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))); |
236 | } |
229 | } |
237 | |
230 | |
238 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
231 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
239 | |
232 | |
240 | BOOT: |
233 | BOOT: |
… | |
… | |
250 | PROTOTYPE: $$$ |
243 | PROTOTYPE: $$$ |
251 | PPCODE: |
244 | PPCODE: |
252 | SvSetSV (serializer_package , package ); |
245 | SvSetSV (serializer_package , package ); |
253 | SvSetSV (serializer_mstore , mstore ); |
246 | SvSetSV (serializer_mstore , mstore ); |
254 | SvSetSV (serializer_mretrieve, mretrieve); |
247 | SvSetSV (serializer_mretrieve, mretrieve); |
255 | storable_mstore = |
248 | SvREFCNT_dec (storable_mstore ); storable_mstore = 0; |
256 | storable_mretrieve = 0; |
249 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
257 | |
250 | |
258 | void |
251 | void |
259 | compress(data) |
252 | compress(data) |
260 | SV * data |
253 | SV * data |
261 | PROTOTYPE: $ |
254 | PROTOTYPE: $ |
… | |
… | |
281 | SvGETMAGIC (sv); |
274 | SvGETMAGIC (sv); |
282 | |
275 | |
283 | if (!SvOK (sv)) |
276 | if (!SvOK (sv)) |
284 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
277 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
285 | else if (SvROK (sv) |
278 | else if (SvROK (sv) |
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279 | || SvUTF8 (sv) |
286 | || (SvTYPE(sv) != SVt_IV |
280 | || (SvTYPE(sv) != SVt_IV |
287 | && SvTYPE(sv) != SVt_NV |
281 | && SvTYPE(sv) != SVt_NV |
288 | && SvTYPE(sv) != SVt_PV |
282 | && SvTYPE(sv) != SVt_PV |
289 | && SvTYPE(sv) != SVt_PVIV |
283 | && SvTYPE(sv) != SVt_PVIV |
290 | && SvTYPE(sv) != SVt_PVNV |
284 | && SvTYPE(sv) != SVt_PVNV |
291 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
285 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
292 | { |
286 | { |
293 | int deref = !SvROK (sv); |
287 | int deref = !SvROK (sv); |
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288 | char *pv; |
294 | |
289 | |
295 | if (!storable_mstore) |
290 | if (!storable_mstore) |
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291 | { |
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292 | PUTBACK; |
296 | need_storable (); |
293 | need_storable (); |
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294 | SPAGAIN; |
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295 | } |
297 | |
296 | |
298 | if (deref) |
297 | if (deref) |
299 | sv = newRV_noinc (sv); |
298 | sv = newRV_noinc (sv); |
300 | |
299 | |
301 | PUSHMARK (SP); |
300 | PUSHMARK (SP); |
302 | XPUSHs (sv); |
301 | XPUSHs (sv); |
303 | PUTBACK; |
302 | PUTBACK; |
304 | |
303 | |
305 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
304 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
306 | croak ("Storable::mstore didn't return a single scalar"); |
305 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore)); |
307 | |
306 | |
308 | SPAGAIN; |
307 | SPAGAIN; |
309 | |
308 | |
310 | sv = POPs; |
309 | sv = POPs; |
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310 | pv = SvPV_nolen (sv); |
311 | |
311 | |
312 | if (SvPVX (sv)[0] == MAGIC_R) |
312 | if (*pv == MAGIC_R) |
313 | { |
313 | { |
314 | if (deref) |
314 | if (deref) |
315 | SvPVX (sv)[0] = MAGIC_R_deref; |
315 | *pv = MAGIC_R_deref; |
316 | } |
316 | } |
317 | else |
317 | else |
318 | { |
318 | { |
319 | char pfx[2]; |
319 | char pfx[2]; |
320 | |
320 | |
… | |
… | |
350 | { |
350 | { |
351 | STRLEN svlen; |
351 | STRLEN svlen; |
352 | int deref = 0; |
352 | int deref = 0; |
353 | |
353 | |
354 | SvGETMAGIC (sv); |
354 | SvGETMAGIC (sv); |
355 | 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)) |
356 | { |
356 | { |
357 | redo: |
357 | redo: |
358 | |
358 | |
359 | switch (SvPVX (sv)[0]) |
359 | switch (SvPVX (sv)[0]) |
360 | { |
360 | { |
… | |
… | |
369 | 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?"); |
370 | |
370 | |
371 | sv_chop (sv, SvPVX (sv) + 2); |
371 | sv_chop (sv, SvPVX (sv) + 2); |
372 | |
372 | |
373 | if (!storable_mstore) |
373 | if (!storable_mstore) |
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374 | { |
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375 | PUTBACK; |
374 | need_storable (); |
376 | need_storable (); |
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377 | SPAGAIN; |
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378 | } |
375 | |
379 | |
376 | PUSHMARK (SP); |
380 | PUSHMARK (SP); |
377 | XPUSHs (sv); |
381 | XPUSHs (sv); |
378 | PUTBACK; |
382 | PUTBACK; |
379 | |
383 | |
380 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
384 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
381 | croak ("Storable::mstore didn't return a single scalar"); |
385 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
382 | |
386 | |
383 | SPAGAIN; |
387 | SPAGAIN; |
384 | |
388 | |
385 | if (deref) |
389 | if (deref) |
386 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
390 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
… | |
… | |
413 | goto redo; |
417 | goto redo; |
414 | |
418 | |
415 | case MAGIC_R: |
419 | case MAGIC_R: |
416 | handle_MAGIC_R: |
420 | handle_MAGIC_R: |
417 | if (!storable_mstore) |
421 | if (!storable_mstore) |
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422 | { |
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423 | PUTBACK; |
418 | need_storable (); |
424 | need_storable (); |
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425 | SPAGAIN; |
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426 | } |
419 | |
427 | |
420 | PUSHMARK (SP); |
428 | PUSHMARK (SP); |
421 | XPUSHs (sv); |
429 | XPUSHs (sv); |
422 | PUTBACK; |
430 | PUTBACK; |
423 | |
431 | |
424 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
432 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
425 | croak ("Storable::mstore didn't return a single scalar"); |
433 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
426 | |
434 | |
427 | SPAGAIN; |
435 | SPAGAIN; |
428 | |
436 | |
429 | if (deref) |
437 | if (deref) |
430 | { |
438 | { |