… | |
… | |
22 | #define MAGIC_U 0 /* uncompressed data follows */ |
22 | #define MAGIC_U 0 /* uncompressed data follows */ |
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) */ |
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|
27 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
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|
28 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
27 | #define MAGIC_HI 7 /* room for one higher storable major */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
28 | |
30 | |
29 | #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)) |
30 | |
32 | |
31 | static CV *storable_mstore, *storable_mretrieve; |
33 | static CV *storable_mstore, *storable_mretrieve; |
32 | |
34 | |
33 | static SV * |
35 | static SV * |
34 | compress_sv (SV *data, char cprepend, char uprepend) |
36 | compress_sv (SV *data, char cprepend, int uprepend) |
35 | { |
37 | { |
36 | STRLEN usize, csize; |
38 | STRLEN usize, csize; |
37 | char *src = (char *)SvPV (data, usize); |
39 | char *src = (char *)SvPV (data, usize); |
38 | |
40 | |
39 | if (usize) |
41 | if (usize) |
… | |
… | |
89 | |
91 | |
90 | if (csize) |
92 | if (csize) |
91 | { |
93 | { |
92 | SvCUR_set (ret, csize + skip); |
94 | SvCUR_set (ret, csize + skip); |
93 | } |
95 | } |
94 | else if (!uprepend) |
96 | else if (uprepend < 0) |
95 | { |
97 | { |
96 | SvREFCNT_dec (ret); |
98 | SvREFCNT_dec (ret); |
97 | ret = SvREFCNT_inc (data); |
99 | ret = SvREFCNT_inc (data); |
98 | } |
100 | } |
99 | else |
101 | else |
100 | { |
102 | { |
101 | *dst++ = 0; |
103 | *dst++ = uprepend; |
102 | |
104 | |
103 | Move ((void *)src, (void *)dst, usize, unsigned char); |
105 | Move ((void *)src, (void *)dst, usize, unsigned char); |
104 | |
106 | |
105 | SvCUR_set (ret, usize + 1); |
107 | SvCUR_set (ret, usize + 1); |
106 | } |
108 | } |
… | |
… | |
206 | void |
208 | void |
207 | compress(data) |
209 | compress(data) |
208 | SV * data |
210 | SV * data |
209 | PROTOTYPE: $ |
211 | PROTOTYPE: $ |
210 | PPCODE: |
212 | PPCODE: |
211 | XPUSHs (sv_2mortal (compress_sv (data, 0, 1))); |
213 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
212 | |
214 | |
213 | void |
215 | void |
214 | decompress(data) |
216 | decompress(data) |
215 | SV * data |
217 | SV * data |
216 | PROTOTYPE: $ |
218 | PROTOTYPE: $ |
… | |
… | |
224 | sfreeze_cr = 1 |
226 | sfreeze_cr = 1 |
225 | sfreeze_c = 2 |
227 | sfreeze_c = 2 |
226 | PROTOTYPE: $ |
228 | PROTOTYPE: $ |
227 | PPCODE: |
229 | PPCODE: |
228 | |
230 | |
|
|
231 | SvGETMAGIC (sv); |
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|
232 | |
229 | if (!SvOK (sv)) |
233 | if (!SvOK (sv)) |
230 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
234 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
231 | else if (SvTYPE(sv) != SVt_IV |
235 | else if (SvTYPE(sv) != SVt_IV |
232 | && SvTYPE(sv) != SVt_NV |
236 | && SvTYPE(sv) != SVt_NV |
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|
237 | && SvTYPE(sv) != SVt_PV |
233 | && SvTYPE(sv) != SVt_PV) /* mstore */ |
238 | && SvTYPE(sv) != SVt_PVMG+99999) /* mstore */ |
234 | { |
239 | { |
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|
240 | int deref = !SvROK (sv); |
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|
241 | |
235 | if (!storable_mstore) |
242 | if (!storable_mstore) |
236 | need_storable (); |
243 | need_storable (); |
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|
244 | |
|
|
245 | if (deref) |
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|
246 | sv = newRV_noinc (sv); |
237 | |
247 | |
238 | PUSHMARK (SP); |
248 | PUSHMARK (SP); |
239 | XPUSHs (sv); |
249 | XPUSHs (sv); |
240 | PUTBACK; |
250 | PUTBACK; |
241 | |
251 | |
… | |
… | |
247 | sv = POPs; |
257 | sv = POPs; |
248 | |
258 | |
249 | if (SvPVX (sv)[0] != MAGIC_R) |
259 | if (SvPVX (sv)[0] != MAGIC_R) |
250 | croak ("Storable format changed, need newer version of Compress::LZF"); |
260 | croak ("Storable format changed, need newer version of Compress::LZF"); |
251 | |
261 | |
|
|
262 | if (deref) |
|
|
263 | SvPVX (sv)[0] = MAGIC_R_deref; |
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|
264 | |
252 | if (ix) /* compress */ |
265 | if (ix) /* compress */ |
253 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_CR, 0))); |
266 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
254 | else |
267 | |
255 | XPUSHs (sv); |
268 | XPUSHs (sv); |
256 | } |
269 | } |
257 | else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
270 | else if (SvTYPE (sv) == SVt_PV && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
258 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 1))); /* need to prefix only */ |
271 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
259 | else if (ix == 2) /* compress always */ |
272 | else if (ix == 2) /* compress always */ |
260 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
273 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
261 | else /* don't compress */ |
274 | else /* don't compress */ |
262 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
275 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
263 | |
276 | |
264 | void |
277 | void |
265 | sthaw(sv) |
278 | sthaw(sv) |
266 | SV * sv |
279 | SV * sv |
267 | PROTOTYPE: $ |
280 | PROTOTYPE: $ |
268 | PPCODE: |
281 | PPCODE: |
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|
282 | |
|
|
283 | int deref = 0; |
269 | |
284 | |
270 | SvGETMAGIC (sv); |
285 | SvGETMAGIC (sv); |
271 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
286 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
272 | { |
287 | { |
273 | switch (SvPVX (sv)[0]) |
288 | switch (SvPVX (sv)[0]) |
… | |
… | |
282 | |
297 | |
283 | case MAGIC_C: |
298 | case MAGIC_C: |
284 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
299 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
285 | break; |
300 | break; |
286 | |
301 | |
|
|
302 | case MAGIC_R_deref: |
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303 | deref = 1; |
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|
304 | SvPVX (sv)[0] = MAGIC_R; |
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305 | goto handle_MAGIC_R; |
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306 | |
|
|
307 | case MAGIC_CR_deref: |
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308 | deref = 1; |
287 | case MAGIC_CR: |
309 | case MAGIC_CR: |
288 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
310 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
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311 | if (deref) |
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312 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
|
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313 | SvPVX (sv)[0] = MAGIC_R; |
|
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314 | else |
|
|
315 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
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|
316 | |
289 | case MAGIC_R: |
317 | case MAGIC_R: |
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|
318 | handle_MAGIC_R: |
290 | if (!storable_mstore) |
319 | if (!storable_mstore) |
291 | need_storable (); |
320 | need_storable (); |
292 | |
321 | |
293 | PUSHMARK (SP); |
322 | PUSHMARK (SP); |
294 | XPUSHs (sv); |
323 | XPUSHs (sv); |
… | |
… | |
297 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
326 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
298 | croak ("Storable::mstore didn't return a single scalar"); |
327 | croak ("Storable::mstore didn't return a single scalar"); |
299 | |
328 | |
300 | SPAGAIN; |
329 | SPAGAIN; |
301 | |
330 | |
|
|
331 | if (deref) |
|
|
332 | { |
|
|
333 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
|
|
334 | |
|
|
335 | if (SvPVX (sv)[0] == MAGIC_R) |
|
|
336 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
337 | } |
|
|
338 | else |
302 | /*XPUSHs (POPs); this is a nop, hopefully */ |
339 | XPUSHs (POPs); /* this is a nop, hopefully */ |
303 | |
340 | |
304 | break; |
341 | break; |
305 | |
342 | |
306 | default: |
343 | default: |
307 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
344 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
308 | } |
345 | } |
309 | } |
346 | } |
310 | else |
347 | else |
311 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
348 | XPUSHs (sv_2mortal (newSVsv (sv))); |