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" |
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10 | #include "lzf_c_best.c" |
19 | |
11 | |
20 | /* we re-use the storable header for our purposes */ |
12 | /* we re-use the storable header for our purposes */ |
21 | #define MAGIC_LO 0 |
13 | #define MAGIC_LO 0 |
22 | #define MAGIC_U 0 /* uncompressed data follows */ |
14 | #define MAGIC_U 0 /* uncompressed data follows */ |
23 | #define MAGIC_C 1 /* compressed data follows */ |
15 | #define MAGIC_C 1 /* compressed data follows */ |
… | |
… | |
39 | #else |
31 | #else |
40 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
32 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
41 | #endif |
33 | #endif |
42 | |
34 | |
43 | static SV * |
35 | static SV * |
44 | compress_sv (SV *data, char cprepend, int uprepend) |
36 | compress_sv (SV *data, char cprepend, int uprepend, int best) |
45 | { |
37 | { |
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38 | LZF_STATE *state; |
46 | STRLEN usize, csize; |
39 | STRLEN usize, csize; |
47 | char *src = (char *)SvPV (data, usize); |
40 | char *src = (char *)SvPVbyte (data, usize); |
48 | |
41 | |
49 | if (usize) |
42 | if (usize) |
50 | { |
43 | { |
51 | SV *ret = NEWSV (0, usize + 1); |
44 | SV *ret = NEWSV (0, usize + 1); |
52 | unsigned char *dst; |
45 | unsigned char *dst; |
… | |
… | |
60 | |
53 | |
61 | if (usize <= 0x7f) |
54 | if (usize <= 0x7f) |
62 | { |
55 | { |
63 | dst[skip++] = usize; |
56 | dst[skip++] = usize; |
64 | } |
57 | } |
65 | else if (usize <= 0x7ff) |
58 | else if (usize <= 0x7ff) |
66 | { |
59 | { |
67 | dst[skip++] = (( usize >> 6) | 0xc0); |
60 | dst[skip++] = (( usize >> 6) | 0xc0); |
68 | dst[skip++] = (( usize & 0x3f) | 0x80); |
61 | dst[skip++] = (( usize & 0x3f) | 0x80); |
69 | } |
62 | } |
70 | else if (usize <= 0xffff) |
63 | else if (usize <= 0xffff) |
… | |
… | |
98 | dst[skip++] = (( usize & 0x3f) | 0x80); |
91 | dst[skip++] = (( usize & 0x3f) | 0x80); |
99 | } |
92 | } |
100 | else |
93 | else |
101 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
94 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
102 | |
95 | |
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96 | New (0, state, 1, LZF_STATE); |
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97 | if (!state) |
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98 | croak ("Compress::LZF unable to allocate memory for compression state"); |
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99 | |
103 | /* 11 bytes is the smallest compressible string */ |
100 | /* 11 bytes is the smallest compressible string */ |
104 | csize = usize < 11 ? 0 : |
101 | csize = usize < 11 ? 0 : |
105 | lzf_compress (src, usize, |
102 | (best ? lzf_compress_best (src, usize, dst + skip, usize - skip) |
106 | dst + skip, |
103 | : lzf_compress (src, usize, dst + skip, usize - skip, *state)); |
107 | usize - skip); |
104 | |
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105 | Safefree (state); |
108 | |
106 | |
109 | if (csize) |
107 | if (csize) |
110 | { |
108 | { |
111 | SvCUR_set (ret, csize + skip); |
109 | SvCUR_set (ret, csize + skip); |
112 | } |
110 | } |
… | |
… | |
132 | |
130 | |
133 | static SV * |
131 | static SV * |
134 | decompress_sv (SV *data, int skip) |
132 | decompress_sv (SV *data, int skip) |
135 | { |
133 | { |
136 | STRLEN usize, csize; |
134 | STRLEN usize, csize; |
137 | unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; |
135 | unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip; |
138 | |
136 | |
139 | if (csize) |
137 | if (csize) |
140 | { |
138 | { |
141 | void *dst; |
139 | void *dst; |
142 | SV *ret; |
140 | SV *ret; |
… | |
… | |
199 | ret = NEWSV (0, usize); |
197 | ret = NEWSV (0, usize); |
200 | SvPOK_only (ret); |
198 | SvPOK_only (ret); |
201 | dst = SvPVX (ret); |
199 | dst = SvPVX (ret); |
202 | |
200 | |
203 | if (lzf_decompress (src, csize, dst, usize) != usize) |
201 | if (lzf_decompress (src, csize, dst, usize) != usize) |
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202 | { |
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203 | SvREFCNT_dec (ret); |
204 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
204 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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205 | } |
205 | } |
206 | } |
206 | else |
207 | else |
207 | { |
208 | { |
208 | usize = csize - 1; |
209 | usize = csize - 1; |
209 | ret = NEWSV (0, usize | 1); |
210 | ret = NEWSV (0, usize | 1); |
… | |
… | |
219 | else |
220 | else |
220 | return newSVpvn ("", 0); |
221 | return newSVpvn ("", 0); |
221 | } |
222 | } |
222 | |
223 | |
223 | static void |
224 | static void |
224 | need_storable(void) |
225 | need_storable (void) |
225 | { |
226 | { |
226 | #if PATCHLEVEL < 6 |
227 | 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 | |
228 | |
234 | storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
229 | 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)); |
230 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
236 | } |
231 | } |
237 | |
232 | |
238 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
233 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
239 | |
234 | |
240 | BOOT: |
235 | BOOT: |
… | |
… | |
250 | PROTOTYPE: $$$ |
245 | PROTOTYPE: $$$ |
251 | PPCODE: |
246 | PPCODE: |
252 | SvSetSV (serializer_package , package ); |
247 | SvSetSV (serializer_package , package ); |
253 | SvSetSV (serializer_mstore , mstore ); |
248 | SvSetSV (serializer_mstore , mstore ); |
254 | SvSetSV (serializer_mretrieve, mretrieve); |
249 | SvSetSV (serializer_mretrieve, mretrieve); |
255 | storable_mstore = |
250 | SvREFCNT_dec (storable_mstore ); storable_mstore = 0; |
256 | storable_mretrieve = 0; |
251 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
257 | |
252 | |
258 | void |
253 | void |
259 | compress(data) |
254 | compress(data) |
260 | SV * data |
255 | SV * data |
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256 | ALIAS: |
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257 | compress_best = 1 |
261 | PROTOTYPE: $ |
258 | PROTOTYPE: $ |
262 | PPCODE: |
259 | PPCODE: |
263 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
260 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U, ix))); |
264 | |
261 | |
265 | void |
262 | void |
266 | decompress(data) |
263 | decompress(data) |
267 | SV * data |
264 | SV * data |
268 | PROTOTYPE: $ |
265 | PROTOTYPE: $ |
… | |
… | |
271 | |
268 | |
272 | void |
269 | void |
273 | sfreeze(sv) |
270 | sfreeze(sv) |
274 | SV * sv |
271 | SV * sv |
275 | ALIAS: |
272 | ALIAS: |
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273 | sfreeze = 0 |
276 | sfreeze_cr = 1 |
274 | sfreeze_cr = 1 |
277 | sfreeze_c = 2 |
275 | sfreeze_c = 2 |
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276 | sfreeze_best = 4 |
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277 | sfreeze_cr_best = 5 |
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278 | sfreeze_c_best = 6 |
278 | PROTOTYPE: $ |
279 | PROTOTYPE: $ |
279 | PPCODE: |
280 | PPCODE: |
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281 | { |
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282 | int best = ix & 4; |
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283 | ix &= 3; |
280 | |
284 | |
281 | SvGETMAGIC (sv); |
285 | SvGETMAGIC (sv); |
282 | |
286 | |
283 | if (!SvOK (sv)) |
287 | if (!SvOK (sv)) |
284 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
288 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
285 | else if (SvROK (sv) |
289 | else if (SvROK (sv) |
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290 | || SvUTF8 (sv) |
286 | || (SvTYPE(sv) != SVt_IV |
291 | || (SvTYPE(sv) != SVt_IV |
287 | && SvTYPE(sv) != SVt_NV |
292 | && SvTYPE(sv) != SVt_NV |
288 | && SvTYPE(sv) != SVt_PV |
293 | && SvTYPE(sv) != SVt_PV |
289 | && SvTYPE(sv) != SVt_PVIV |
294 | && SvTYPE(sv) != SVt_PVIV |
290 | && SvTYPE(sv) != SVt_PVNV |
295 | && SvTYPE(sv) != SVt_PVNV |
291 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
296 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
292 | { |
297 | { |
293 | int deref = !SvROK (sv); |
298 | int deref = !SvROK (sv); |
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299 | char *pv; |
294 | |
300 | |
295 | if (!storable_mstore) |
301 | if (!storable_mstore) |
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302 | { |
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303 | PUTBACK; |
296 | need_storable (); |
304 | need_storable (); |
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305 | SPAGAIN; |
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306 | } |
297 | |
307 | |
298 | if (deref) |
308 | if (deref) |
299 | sv = newRV_noinc (sv); |
309 | sv = newRV_noinc (sv); |
300 | |
310 | |
301 | PUSHMARK (SP); |
311 | PUSHMARK (SP); |
302 | XPUSHs (sv); |
312 | XPUSHs (sv); |
303 | PUTBACK; |
313 | PUTBACK; |
304 | |
314 | |
305 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
315 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
306 | croak ("Storable::mstore didn't return a single scalar"); |
316 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore)); |
307 | |
317 | |
308 | SPAGAIN; |
318 | SPAGAIN; |
309 | |
319 | |
310 | sv = POPs; |
320 | sv = POPs; |
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321 | pv = SvPV_nolen (sv); |
311 | |
322 | |
312 | if (SvPVX (sv)[0] == MAGIC_R) |
323 | if (*pv == MAGIC_R) |
313 | { |
324 | { |
314 | if (deref) |
325 | if (deref) |
315 | SvPVX (sv)[0] = MAGIC_R_deref; |
326 | *pv = MAGIC_R_deref; |
316 | } |
327 | } |
317 | else |
328 | else |
318 | { |
329 | { |
319 | char pfx[2]; |
330 | char pfx[2]; |
320 | |
331 | |
… | |
… | |
323 | |
334 | |
324 | sv_insert (sv, 0, 0, pfx, 2); |
335 | sv_insert (sv, 0, 0, pfx, 2); |
325 | } |
336 | } |
326 | |
337 | |
327 | if (ix) /* compress */ |
338 | if (ix) /* compress */ |
328 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
339 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1, best)); |
329 | |
340 | |
330 | XPUSHs (sv); |
341 | XPUSHs (sv); |
331 | } |
342 | } |
332 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
343 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
333 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
344 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U, best))); /* need to prefix only */ |
334 | else if (ix == 2) /* compress always */ |
345 | else if (ix == 2) /* compress always */ |
335 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
346 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1, best))); |
336 | else if (SvNIOK (sv)) /* don't compress */ |
347 | else if (SvNIOK (sv)) /* don't compress */ |
337 | { |
348 | { |
338 | STRLEN len; |
349 | STRLEN len; |
339 | char *s = SvPV (sv, len); |
350 | char *s = SvPV (sv, len); |
340 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
351 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
341 | } |
352 | } |
342 | else /* don't compress */ |
353 | else /* don't compress */ |
343 | XPUSHs (sv_2mortal (newSVsv (sv))); |
354 | XPUSHs (sv_2mortal (newSVsv (sv))); |
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355 | } |
344 | |
356 | |
345 | void |
357 | void |
346 | sthaw(sv) |
358 | sthaw(sv) |
347 | SV * sv |
359 | SV * sv |
348 | PROTOTYPE: $ |
360 | PROTOTYPE: $ |
… | |
… | |
350 | { |
362 | { |
351 | STRLEN svlen; |
363 | STRLEN svlen; |
352 | int deref = 0; |
364 | int deref = 0; |
353 | |
365 | |
354 | SvGETMAGIC (sv); |
366 | SvGETMAGIC (sv); |
355 | if (SvPOK (sv) && IN_RANGE (SvPV (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
367 | if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
356 | { |
368 | { |
357 | redo: |
369 | redo: |
358 | |
370 | |
359 | switch (SvPVX (sv)[0]) |
371 | switch (SvPVX (sv)[0]) |
360 | { |
372 | { |
… | |
… | |
369 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
381 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
370 | |
382 | |
371 | sv_chop (sv, SvPVX (sv) + 2); |
383 | sv_chop (sv, SvPVX (sv) + 2); |
372 | |
384 | |
373 | if (!storable_mstore) |
385 | if (!storable_mstore) |
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386 | { |
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387 | PUTBACK; |
374 | need_storable (); |
388 | need_storable (); |
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389 | SPAGAIN; |
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390 | } |
375 | |
391 | |
376 | PUSHMARK (SP); |
392 | PUSHMARK (SP); |
377 | XPUSHs (sv); |
393 | XPUSHs (sv); |
378 | PUTBACK; |
394 | PUTBACK; |
379 | |
395 | |
380 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
396 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
381 | croak ("Storable::mstore didn't return a single scalar"); |
397 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
382 | |
398 | |
383 | SPAGAIN; |
399 | SPAGAIN; |
384 | |
400 | |
385 | if (deref) |
401 | if (deref) |
386 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
402 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
… | |
… | |
413 | goto redo; |
429 | goto redo; |
414 | |
430 | |
415 | case MAGIC_R: |
431 | case MAGIC_R: |
416 | handle_MAGIC_R: |
432 | handle_MAGIC_R: |
417 | if (!storable_mstore) |
433 | if (!storable_mstore) |
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434 | { |
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435 | PUTBACK; |
418 | need_storable (); |
436 | need_storable (); |
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437 | SPAGAIN; |
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438 | } |
419 | |
439 | |
420 | PUSHMARK (SP); |
440 | PUSHMARK (SP); |
421 | XPUSHs (sv); |
441 | XPUSHs (sv); |
422 | PUTBACK; |
442 | PUTBACK; |
423 | |
443 | |
424 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
444 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
425 | croak ("Storable::mstore didn't return a single scalar"); |
445 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
426 | |
446 | |
427 | SPAGAIN; |
447 | SPAGAIN; |
428 | |
448 | |
429 | if (deref) |
449 | if (deref) |
430 | { |
450 | { |