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8 | #include "patchlevel.h" |
8 | #include "patchlevel.h" |
9 | #if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55)) |
9 | #if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55)) |
10 | static STRLEN nolen_na; |
10 | static STRLEN nolen_na; |
11 | # define SvPV_nolen(sv) SvPV ((sv), nolen_na) |
11 | # define SvPV_nolen(sv) SvPV ((sv), nolen_na) |
12 | #endif |
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 |
13 | |
16 | |
14 | #include "lzf_c.c" |
17 | #include "lzf_c.c" |
15 | #include "lzf_d.c" |
18 | #include "lzf_d.c" |
16 | |
19 | |
17 | /* we re-use the storable header for our purposes */ |
20 | /* we re-use the storable header for our purposes */ |
18 | #define MAGIC_LO 0 |
21 | #define MAGIC_LO 0 |
19 | #define MAGIC_U 0 /* uncompressed data follows */ |
22 | #define MAGIC_U 0 /* uncompressed data follows */ |
20 | #define MAGIC_C 1 /* compressed data follows */ |
23 | #define MAGIC_C 1 /* compressed data follows */ |
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24 | #define MAGIC_undef 2 /* the special value undef */ |
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25 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
21 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
26 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
22 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
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) */ |
23 | #define MAGIC_HI 7 /* room for one higher storable major */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
24 | |
30 | |
25 | #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)) |
26 | |
32 | |
27 | static CV *storable_mstore, *storable_mretrieve; |
33 | static CV *storable_mstore, *storable_mretrieve; |
28 | |
34 | |
29 | static SV * |
35 | static SV * |
30 | compress_sv (SV *data, char cprepend, char uprepend) |
36 | compress_sv (SV *data, char cprepend, int uprepend) |
31 | { |
37 | { |
32 | STRLEN usize, csize; |
38 | STRLEN usize, csize; |
33 | char *src = (char *)SvPV (data, usize); |
39 | char *src = (char *)SvPV (data, usize); |
34 | |
40 | |
35 | if (usize) |
41 | if (usize) |
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85 | |
91 | |
86 | if (csize) |
92 | if (csize) |
87 | { |
93 | { |
88 | SvCUR_set (ret, csize + skip); |
94 | SvCUR_set (ret, csize + skip); |
89 | } |
95 | } |
90 | else if (!uprepend) |
96 | else if (uprepend < 0) |
91 | { |
97 | { |
92 | SvREFCNT_dec (ret); |
98 | SvREFCNT_dec (ret); |
93 | ret = SvREFCNT_inc (data); |
99 | ret = SvREFCNT_inc (data); |
94 | } |
100 | } |
95 | else |
101 | else |
96 | { |
102 | { |
97 | *dst++ = 0; |
103 | *dst++ = uprepend; |
98 | |
104 | |
99 | Move ((void *)src, (void *)dst, usize, unsigned char); |
105 | Move ((void *)src, (void *)dst, usize, unsigned char); |
100 | |
106 | |
101 | SvCUR_set (ret, usize + 1); |
107 | SvCUR_set (ret, usize + 1); |
102 | } |
108 | } |
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185 | } |
191 | } |
186 | |
192 | |
187 | static void |
193 | static void |
188 | need_storable(void) |
194 | need_storable(void) |
189 | { |
195 | { |
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196 | #if PATCHLEVEL < 6 |
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197 | perl_eval_pv ("require Storable;", 1); |
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198 | #else |
190 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
199 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
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200 | #endif |
191 | |
201 | |
192 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
202 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
193 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
203 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
194 | } |
204 | } |
195 | |
205 | |
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198 | void |
208 | void |
199 | compress(data) |
209 | compress(data) |
200 | SV * data |
210 | SV * data |
201 | PROTOTYPE: $ |
211 | PROTOTYPE: $ |
202 | PPCODE: |
212 | PPCODE: |
203 | XPUSHs (sv_2mortal (compress_sv (data, 0, 1))); |
213 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
204 | |
214 | |
205 | void |
215 | void |
206 | decompress(data) |
216 | decompress(data) |
207 | SV * data |
217 | SV * data |
208 | PROTOTYPE: $ |
218 | PROTOTYPE: $ |
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216 | sfreeze_cr = 1 |
226 | sfreeze_cr = 1 |
217 | sfreeze_c = 2 |
227 | sfreeze_c = 2 |
218 | PROTOTYPE: $ |
228 | PROTOTYPE: $ |
219 | PPCODE: |
229 | PPCODE: |
220 | |
230 | |
221 | if (SvROK (sv)) /* mstore */ |
231 | SvGETMAGIC (sv); |
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232 | |
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233 | if (!SvOK (sv)) |
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234 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
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235 | else if (SvTYPE(sv) != SVt_IV |
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236 | && SvTYPE(sv) != SVt_NV |
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237 | && SvTYPE(sv) != SVt_PV |
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238 | && SvTYPE(sv) != SVt_PVMG+99999) /* mstore */ |
222 | { |
239 | { |
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240 | int deref = !SvROK (sv); |
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241 | |
223 | if (!storable_mstore) |
242 | if (!storable_mstore) |
224 | need_storable (); |
243 | need_storable (); |
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244 | |
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245 | if (deref) |
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246 | sv = newRV_noinc (sv); |
225 | |
247 | |
226 | PUSHMARK (SP); |
248 | PUSHMARK (SP); |
227 | XPUSHs (sv); |
249 | XPUSHs (sv); |
228 | PUTBACK; |
250 | PUTBACK; |
229 | |
251 | |
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235 | sv = POPs; |
257 | sv = POPs; |
236 | |
258 | |
237 | if (SvPVX (sv)[0] != MAGIC_R) |
259 | if (SvPVX (sv)[0] != MAGIC_R) |
238 | croak ("Storable format changed, need newer version of Compress::LZF"); |
260 | croak ("Storable format changed, need newer version of Compress::LZF"); |
239 | |
261 | |
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262 | if (deref) |
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263 | SvPVX (sv)[0] = MAGIC_R_deref; |
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264 | |
240 | if (ix) /* compress */ |
265 | if (ix) /* compress */ |
241 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_CR, 0))); |
266 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
242 | else |
267 | |
243 | XPUSHs (sv); |
268 | XPUSHs (sv); |
244 | } |
269 | } |
245 | else if (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)) |
246 | 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 */ |
247 | else if (ix == 2) /* compress always */ |
272 | else if (ix == 2) /* compress always */ |
248 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
273 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
249 | else /* don't compress */ |
274 | else /* don't compress */ |
250 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
275 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
251 | |
276 | |
252 | void |
277 | void |
253 | sthaw(sv) |
278 | sthaw(sv) |
254 | SV * sv |
279 | SV * sv |
255 | PROTOTYPE: $ |
280 | PROTOTYPE: $ |
256 | PPCODE: |
281 | PPCODE: |
257 | char hdr = SvPVX (sv)[0]; |
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258 | |
282 | |
259 | if (IN_RANGE (hdr, MAGIC_LO, MAGIC_HI)) |
283 | int deref = 0; |
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284 | |
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285 | SvGETMAGIC (sv); |
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286 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
260 | { |
287 | { |
261 | switch (SvPVX (sv)[0]) |
288 | switch (SvPVX (sv)[0]) |
262 | { |
289 | { |
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290 | case MAGIC_undef: |
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291 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
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292 | break; |
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293 | |
263 | case MAGIC_U: |
294 | case MAGIC_U: |
264 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
295 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
265 | break; |
296 | break; |
266 | |
297 | |
267 | case MAGIC_C: |
298 | case MAGIC_C: |
268 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
299 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
269 | break; |
300 | break; |
270 | |
301 | |
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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 | |
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307 | case MAGIC_CR_deref: |
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308 | deref = 1; |
271 | case MAGIC_CR: |
309 | case MAGIC_CR: |
272 | 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 |
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315 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
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316 | |
273 | case MAGIC_R: |
317 | case MAGIC_R: |
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318 | handle_MAGIC_R: |
274 | if (!storable_mstore) |
319 | if (!storable_mstore) |
275 | need_storable (); |
320 | need_storable (); |
276 | |
321 | |
277 | PUSHMARK (SP); |
322 | PUSHMARK (SP); |
278 | XPUSHs (sv); |
323 | XPUSHs (sv); |
… | |
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281 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
326 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
282 | croak ("Storable::mstore didn't return a single scalar"); |
327 | croak ("Storable::mstore didn't return a single scalar"); |
283 | |
328 | |
284 | SPAGAIN; |
329 | SPAGAIN; |
285 | |
330 | |
286 | /*XPUSHs (POPs);*/ |
331 | if (deref) |
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332 | { |
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333 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
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334 | |
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335 | if (SvPVX (sv)[0] == MAGIC_R) |
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336 | SvPVX (sv)[0] = MAGIC_R_deref; |
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337 | } |
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338 | else |
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339 | XPUSHs (POPs); /* this is a nop, hopefully */ |
287 | |
340 | |
288 | break; |
341 | break; |
289 | |
342 | |
290 | default: |
343 | default: |
291 | 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?"); |
292 | } |
345 | } |
293 | } |
346 | } |
294 | else |
347 | else |
295 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
348 | XPUSHs (sv_2mortal (newSVsv (sv))); |