… | |
… | |
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 */ |
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|
235 | else if (SvROK (sv) |
231 | else if (SvTYPE(sv) != SVt_IV |
236 | || (SvTYPE(sv) != SVt_IV |
232 | && SvTYPE(sv) != SVt_NV |
237 | && SvTYPE(sv) != SVt_NV |
233 | && SvTYPE(sv) != SVt_PV |
238 | && SvTYPE(sv) != SVt_PV |
234 | && SvTYPE(sv) != SVt_PVMG) /* mstore */ |
239 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
235 | { |
240 | { |
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|
241 | int deref = !SvROK (sv); |
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|
242 | |
236 | if (!storable_mstore) |
243 | if (!storable_mstore) |
237 | need_storable (); |
244 | need_storable (); |
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|
245 | |
|
|
246 | if (deref) |
|
|
247 | sv = newRV_noinc (sv); |
238 | |
248 | |
239 | PUSHMARK (SP); |
249 | PUSHMARK (SP); |
240 | XPUSHs (sv); |
250 | XPUSHs (sv); |
241 | PUTBACK; |
251 | PUTBACK; |
242 | |
252 | |
… | |
… | |
248 | sv = POPs; |
258 | sv = POPs; |
249 | |
259 | |
250 | if (SvPVX (sv)[0] != MAGIC_R) |
260 | if (SvPVX (sv)[0] != MAGIC_R) |
251 | croak ("Storable format changed, need newer version of Compress::LZF"); |
261 | croak ("Storable format changed, need newer version of Compress::LZF"); |
252 | |
262 | |
|
|
263 | if (deref) |
|
|
264 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
265 | |
253 | if (ix) /* compress */ |
266 | if (ix) /* compress */ |
254 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_CR, 0))); |
267 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
255 | else |
268 | |
256 | XPUSHs (sv); |
269 | XPUSHs (sv); |
257 | } |
270 | } |
258 | else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
271 | else if (SvTYPE (sv) == SVt_PV && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
259 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 1))); /* need to prefix only */ |
272 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
260 | else if (ix == 2) /* compress always */ |
273 | else if (ix == 2) /* compress always */ |
261 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
274 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
262 | else /* don't compress */ |
275 | else /* don't compress */ |
263 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
276 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
264 | |
277 | |
265 | void |
278 | void |
266 | sthaw(sv) |
279 | sthaw(sv) |
267 | SV * sv |
280 | SV * sv |
268 | PROTOTYPE: $ |
281 | PROTOTYPE: $ |
269 | PPCODE: |
282 | PPCODE: |
|
|
283 | |
|
|
284 | int deref = 0; |
270 | |
285 | |
271 | SvGETMAGIC (sv); |
286 | SvGETMAGIC (sv); |
272 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
287 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
273 | { |
288 | { |
274 | switch (SvPVX (sv)[0]) |
289 | switch (SvPVX (sv)[0]) |
… | |
… | |
283 | |
298 | |
284 | case MAGIC_C: |
299 | case MAGIC_C: |
285 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
300 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
286 | break; |
301 | break; |
287 | |
302 | |
|
|
303 | case MAGIC_R_deref: |
|
|
304 | deref = 1; |
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|
305 | SvPVX (sv)[0] = MAGIC_R; |
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|
306 | goto handle_MAGIC_R; |
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307 | |
|
|
308 | case MAGIC_CR_deref: |
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|
309 | deref = 1; |
288 | case MAGIC_CR: |
310 | case MAGIC_CR: |
289 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
311 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
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312 | if (deref) |
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313 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
|
|
314 | SvPVX (sv)[0] = MAGIC_R; |
|
|
315 | else |
|
|
316 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
|
|
317 | |
290 | case MAGIC_R: |
318 | case MAGIC_R: |
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|
319 | handle_MAGIC_R: |
291 | if (!storable_mstore) |
320 | if (!storable_mstore) |
292 | need_storable (); |
321 | need_storable (); |
293 | |
322 | |
294 | PUSHMARK (SP); |
323 | PUSHMARK (SP); |
295 | XPUSHs (sv); |
324 | XPUSHs (sv); |
… | |
… | |
298 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
327 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
299 | croak ("Storable::mstore didn't return a single scalar"); |
328 | croak ("Storable::mstore didn't return a single scalar"); |
300 | |
329 | |
301 | SPAGAIN; |
330 | SPAGAIN; |
302 | |
331 | |
|
|
332 | if (deref) |
|
|
333 | { |
|
|
334 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
|
|
335 | |
|
|
336 | if (SvPVX (sv)[0] == MAGIC_R) |
|
|
337 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
338 | } |
|
|
339 | else |
303 | /*XPUSHs (POPs); this is a nop, hopefully */ |
340 | XPUSHs (POPs); /* this is a nop, hopefully */ |
304 | |
341 | |
305 | break; |
342 | break; |
306 | |
343 | |
307 | default: |
344 | default: |
308 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
345 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
309 | } |
346 | } |
310 | } |
347 | } |
311 | else |
348 | else |
312 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
349 | XPUSHs (sv_2mortal (newSVsv (sv))); |