… | |
… | |
23 | #define MAGIC_C 1 /* compressed data follows */ |
23 | #define MAGIC_C 1 /* compressed data follows */ |
24 | #define MAGIC_undef 2 /* the special value undef */ |
24 | #define MAGIC_undef 2 /* the special value undef */ |
25 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
25 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
26 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
26 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
27 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
27 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
28 | #define MAGIC_R_deref 6 /* storable NO (reference, freeze) */ |
28 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
30 | |
30 | |
31 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
31 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
32 | |
32 | |
|
|
33 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
33 | static CV *storable_mstore, *storable_mretrieve; |
34 | static CV *storable_mstore, *storable_mretrieve; |
34 | |
35 | |
35 | static SV * |
36 | static SV * |
36 | compress_sv (SV *data, char cprepend, char uprepend) |
37 | compress_sv (SV *data, char cprepend, int uprepend) |
37 | { |
38 | { |
38 | STRLEN usize, csize; |
39 | STRLEN usize, csize; |
39 | char *src = (char *)SvPV (data, usize); |
40 | char *src = (char *)SvPV (data, usize); |
40 | |
41 | |
41 | if (usize) |
42 | if (usize) |
… | |
… | |
91 | |
92 | |
92 | if (csize) |
93 | if (csize) |
93 | { |
94 | { |
94 | SvCUR_set (ret, csize + skip); |
95 | SvCUR_set (ret, csize + skip); |
95 | } |
96 | } |
96 | else if (!uprepend) |
97 | else if (uprepend < 0) |
97 | { |
98 | { |
98 | SvREFCNT_dec (ret); |
99 | SvREFCNT_dec (ret); |
99 | ret = SvREFCNT_inc (data); |
100 | ret = SvREFCNT_inc (data); |
100 | } |
101 | } |
101 | else |
102 | else |
102 | { |
103 | { |
103 | *dst++ = 0; |
104 | *dst++ = uprepend; |
104 | |
105 | |
105 | Move ((void *)src, (void *)dst, usize, unsigned char); |
106 | Move ((void *)src, (void *)dst, usize, unsigned char); |
106 | |
107 | |
107 | SvCUR_set (ret, usize + 1); |
108 | SvCUR_set (ret, usize + 1); |
108 | } |
109 | } |
… | |
… | |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | } |
166 | } |
166 | else |
167 | else |
167 | croak ("compressed data corrupted"); |
168 | croak ("compressed data corrupted (invalid length)"); |
168 | |
169 | |
169 | ret = NEWSV (0, usize); |
170 | ret = NEWSV (0, usize); |
170 | SvPOK_only (ret); |
171 | SvPOK_only (ret); |
171 | dst = SvPVX (ret); |
172 | dst = SvPVX (ret); |
172 | |
173 | |
173 | if (lzf_decompress (src, csize, dst, usize) != usize) |
174 | if (lzf_decompress (src, csize, dst, usize) != usize) |
174 | croak ("compressed data corrupted", csize, skip, usize); |
175 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
175 | } |
176 | } |
176 | else |
177 | else |
177 | { |
178 | { |
178 | usize = csize - 1; |
179 | usize = csize - 1; |
179 | ret = NEWSV (0, usize); |
180 | ret = NEWSV (0, usize); |
… | |
… | |
192 | |
193 | |
193 | static void |
194 | static void |
194 | need_storable(void) |
195 | need_storable(void) |
195 | { |
196 | { |
196 | #if PATCHLEVEL < 6 |
197 | #if PATCHLEVEL < 6 |
|
|
198 | char req[8192]; |
|
|
199 | sprintf (req, "require %s;", SvPV_nolen (serializer_package)); |
197 | perl_eval_pv ("require Storable;", 1); |
200 | perl_eval_pv (req, 1); |
198 | #else |
201 | #else |
199 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
202 | load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); |
200 | #endif |
203 | #endif |
201 | |
204 | |
202 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
205 | storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
203 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
206 | storable_mretrieve = GvCV (gv_fetchpv (SvPV_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); |
204 | } |
207 | } |
205 | |
208 | |
206 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
209 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
|
|
210 | |
|
|
211 | BOOT: |
|
|
212 | serializer_package = newSVpv ("Storable", 0); |
|
|
213 | serializer_mstore = newSVpv ("Storable::mstore", 0); |
|
|
214 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
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215 | |
|
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216 | void |
|
|
217 | set_serializer(package, mstore, mretrieve) |
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218 | SV * package |
|
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219 | SV * mstore |
|
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220 | SV * mretrieve |
|
|
221 | PROTOTYPE: $$$ |
|
|
222 | PPCODE: |
|
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223 | SvSetSV (serializer_package , package ); |
|
|
224 | SvSetSV (serializer_mstore , mstore ); |
|
|
225 | SvSetSV (serializer_mretrieve, mretrieve); |
|
|
226 | storable_mstore = |
|
|
227 | storable_mretrieve = 0; |
207 | |
228 | |
208 | void |
229 | void |
209 | compress(data) |
230 | compress(data) |
210 | SV * data |
231 | SV * data |
211 | PROTOTYPE: $ |
232 | PROTOTYPE: $ |
212 | PPCODE: |
233 | PPCODE: |
213 | XPUSHs (sv_2mortal (compress_sv (data, 0, 1))); |
234 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
214 | |
235 | |
215 | void |
236 | void |
216 | decompress(data) |
237 | decompress(data) |
217 | SV * data |
238 | SV * data |
218 | PROTOTYPE: $ |
239 | PROTOTYPE: $ |
… | |
… | |
226 | sfreeze_cr = 1 |
247 | sfreeze_cr = 1 |
227 | sfreeze_c = 2 |
248 | sfreeze_c = 2 |
228 | PROTOTYPE: $ |
249 | PROTOTYPE: $ |
229 | PPCODE: |
250 | PPCODE: |
230 | |
251 | |
|
|
252 | SvGETMAGIC (sv); |
|
|
253 | |
231 | if (!SvOK (sv)) |
254 | if (!SvOK (sv)) |
232 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
255 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
|
|
256 | else if (SvROK (sv) |
233 | else if (SvTYPE(sv) != SVt_IV |
257 | || (SvTYPE(sv) != SVt_IV |
234 | && SvTYPE(sv) != SVt_NV |
258 | && SvTYPE(sv) != SVt_NV |
|
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259 | && SvTYPE(sv) != SVt_PV |
|
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260 | && SvTYPE(sv) != SVt_PVIV |
|
|
261 | && SvTYPE(sv) != SVt_PVNV |
235 | && SvTYPE(sv) != SVt_PV) /* mstore */ |
262 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
236 | { |
263 | { |
237 | int deref = !SvROK (sv); |
264 | int deref = !SvROK (sv); |
238 | |
265 | |
239 | if (!storable_mstore) |
266 | if (!storable_mstore) |
240 | need_storable (); |
267 | need_storable (); |
… | |
… | |
254 | sv = POPs; |
281 | sv = POPs; |
255 | |
282 | |
256 | if (SvPVX (sv)[0] != MAGIC_R) |
283 | if (SvPVX (sv)[0] != MAGIC_R) |
257 | croak ("Storable format changed, need newer version of Compress::LZF"); |
284 | croak ("Storable format changed, need newer version of Compress::LZF"); |
258 | |
285 | |
|
|
286 | if (deref) |
|
|
287 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
288 | |
259 | if (ix) /* compress */ |
289 | if (ix) /* compress */ |
260 | XPUSHs (sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, 0))); |
290 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
261 | else |
|
|
262 | { |
|
|
263 | if (deref) |
|
|
264 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
265 | |
291 | |
266 | XPUSHs (sv); |
292 | XPUSHs (sv); |
267 | } |
|
|
268 | } |
293 | } |
269 | else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
294 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
270 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 1))); /* need to prefix only */ |
295 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
271 | else if (ix == 2) /* compress always */ |
296 | else if (ix == 2) /* compress always */ |
272 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
297 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
|
|
298 | else if (SvNIOK (sv)) /* don't compress */ |
|
|
299 | { |
|
|
300 | STRLEN len; |
|
|
301 | char *s = SvPV (sv, len); |
|
|
302 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
|
|
303 | } |
273 | else /* don't compress */ |
304 | else /* don't compress */ |
274 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
305 | XPUSHs (sv_2mortal (newSVsv (sv))); |
275 | |
306 | |
276 | void |
307 | void |
277 | sthaw(sv) |
308 | sthaw(sv) |
278 | SV * sv |
309 | SV * sv |
279 | PROTOTYPE: $ |
310 | PROTOTYPE: $ |
… | |
… | |
296 | |
327 | |
297 | case MAGIC_C: |
328 | case MAGIC_C: |
298 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
329 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
299 | break; |
330 | break; |
300 | |
331 | |
|
|
332 | case MAGIC_R_deref: |
|
|
333 | deref = 1; |
|
|
334 | SvPVX (sv)[0] = MAGIC_R; |
|
|
335 | goto handle_MAGIC_R; |
|
|
336 | |
301 | case MAGIC_CR_deref: |
337 | case MAGIC_CR_deref: |
302 | deref = 1; |
338 | deref = 1; |
303 | case MAGIC_CR: |
339 | case MAGIC_CR: |
304 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
340 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
305 | case MAGIC_R_deref: |
341 | if (deref) |
306 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
342 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
307 | { |
|
|
308 | deref = 1; |
|
|
309 | SvPVX (sv)[0] = MAGIC_R; |
343 | SvPVX (sv)[0] = MAGIC_R; |
310 | } |
344 | else |
|
|
345 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
|
|
346 | |
311 | case MAGIC_R: |
347 | case MAGIC_R: |
|
|
348 | handle_MAGIC_R: |
312 | if (!storable_mstore) |
349 | if (!storable_mstore) |
313 | need_storable (); |
350 | need_storable (); |
314 | |
351 | |
315 | PUSHMARK (SP); |
352 | PUSHMARK (SP); |
316 | XPUSHs (sv); |
353 | XPUSHs (sv); |
… | |
… | |
321 | |
358 | |
322 | SPAGAIN; |
359 | SPAGAIN; |
323 | |
360 | |
324 | if (deref) |
361 | if (deref) |
325 | { |
362 | { |
326 | SV *ref = SvREFCNT_inc (SvRV (TOPs)); |
363 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
327 | |
|
|
328 | SvREFCNT_dec (TOPs); /* destroy superfluous ref */ |
|
|
329 | SETs (ref); |
|
|
330 | |
364 | |
331 | if (SvPVX (sv)[0] == MAGIC_R) |
365 | if (SvPVX (sv)[0] == MAGIC_R) |
332 | SvPVX (sv)[0] = MAGIC_R; |
366 | SvPVX (sv)[0] = MAGIC_R_deref; |
333 | } |
367 | } |
334 | |
368 | else |
335 | XPUSHs (POPs); /* this is a nop, hopefully */ |
369 | SETs (sv_2mortal (newSVsv (TOPs))); |
336 | |
370 | |
337 | break; |
371 | break; |
338 | |
372 | |
339 | default: |
373 | default: |
340 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
374 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
341 | } |
375 | } |
342 | } |
376 | } |
343 | else |
377 | else |
344 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
378 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
379 | |