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5 | #define LZF_STANDALONE 1 |
5 | #define LZF_STANDALONE 1 |
6 | #define LZF_STATE_ARG 1 |
6 | #define LZF_STATE_ARG 1 |
7 | |
7 | |
8 | #include "lzf_c.c" |
8 | #include "lzf_c.c" |
9 | #include "lzf_d.c" |
9 | #include "lzf_d.c" |
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|
10 | #include "lzf_c_best.c" |
10 | |
11 | |
11 | /* we re-use the storable header for our purposes */ |
12 | /* we re-use the storable header for our purposes */ |
12 | #define MAGIC_LO 0 |
13 | #define MAGIC_LO 0 |
13 | #define MAGIC_U 0 /* uncompressed data follows */ |
14 | #define MAGIC_U 0 /* uncompressed data follows */ |
14 | #define MAGIC_C 1 /* compressed data follows */ |
15 | #define MAGIC_C 1 /* compressed data follows */ |
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30 | #else |
31 | #else |
31 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
32 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
32 | #endif |
33 | #endif |
33 | |
34 | |
34 | static SV * |
35 | static SV * |
35 | compress_sv (SV *data, char cprepend, int uprepend) |
36 | compress_sv (SV *data, char cprepend, int uprepend, int best) |
36 | { |
37 | { |
37 | LZF_STATE *state; |
38 | LZF_STATE *state; |
38 | STRLEN usize, csize; |
39 | STRLEN usize, csize; |
39 | char *src = (char *)SvPVbyte (data, usize); |
40 | char *src = (char *)SvPVbyte (data, usize); |
40 | |
41 | |
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52 | |
53 | |
53 | if (usize <= 0x7f) |
54 | if (usize <= 0x7f) |
54 | { |
55 | { |
55 | dst[skip++] = usize; |
56 | dst[skip++] = usize; |
56 | } |
57 | } |
57 | else if (usize <= 0x7ff) |
58 | else if (usize <= 0x7ff) |
58 | { |
59 | { |
59 | dst[skip++] = (( usize >> 6) | 0xc0); |
60 | dst[skip++] = (( usize >> 6) | 0xc0); |
60 | dst[skip++] = (( usize & 0x3f) | 0x80); |
61 | dst[skip++] = (( usize & 0x3f) | 0x80); |
61 | } |
62 | } |
62 | else if (usize <= 0xffff) |
63 | else if (usize <= 0xffff) |
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96 | if (!state) |
97 | if (!state) |
97 | croak ("Compress::LZF unable to allocate memory for compression state"); |
98 | croak ("Compress::LZF unable to allocate memory for compression state"); |
98 | |
99 | |
99 | /* 11 bytes is the smallest compressible string */ |
100 | /* 11 bytes is the smallest compressible string */ |
100 | csize = usize < 11 ? 0 : |
101 | csize = usize < 11 ? 0 : |
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102 | (best ? lzf_compress_best (src, usize, dst + skip, usize - skip) |
101 | lzf_compress (src, usize, dst + skip, usize - skip, *state); |
103 | : lzf_compress (src, usize, dst + skip, usize - skip, *state)); |
102 | |
104 | |
103 | Safefree (state); |
105 | Safefree (state); |
104 | |
106 | |
105 | if (csize) |
107 | if (csize) |
106 | { |
108 | { |
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220 | } |
222 | } |
221 | |
223 | |
222 | static void |
224 | static void |
223 | need_storable (void) |
225 | need_storable (void) |
224 | { |
226 | { |
225 | eval_sv (sv_2mortal (Perl_newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
227 | eval_sv (sv_2mortal (newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
226 | |
228 | |
227 | storable_mstore = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV))); |
229 | storable_mstore = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV))); |
228 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
230 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
229 | } |
231 | } |
230 | |
232 | |
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249 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
251 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
250 | |
252 | |
251 | void |
253 | void |
252 | compress(data) |
254 | compress(data) |
253 | SV * data |
255 | SV * data |
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|
256 | ALIAS: |
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|
257 | compress_best = 1 |
254 | PROTOTYPE: $ |
258 | PROTOTYPE: $ |
255 | PPCODE: |
259 | PPCODE: |
256 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
260 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U, ix))); |
257 | |
261 | |
258 | void |
262 | void |
259 | decompress(data) |
263 | decompress(data) |
260 | SV * data |
264 | SV * data |
261 | PROTOTYPE: $ |
265 | PROTOTYPE: $ |
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264 | |
268 | |
265 | void |
269 | void |
266 | sfreeze(sv) |
270 | sfreeze(sv) |
267 | SV * sv |
271 | SV * sv |
268 | ALIAS: |
272 | ALIAS: |
|
|
273 | sfreeze = 0 |
269 | sfreeze_cr = 1 |
274 | sfreeze_cr = 1 |
270 | sfreeze_c = 2 |
275 | sfreeze_c = 2 |
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|
276 | sfreeze_best = 4 |
|
|
277 | sfreeze_cr_best = 5 |
|
|
278 | sfreeze_c_best = 6 |
271 | PROTOTYPE: $ |
279 | PROTOTYPE: $ |
272 | PPCODE: |
280 | PPCODE: |
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|
281 | { |
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|
282 | int best = ix & 4; |
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|
283 | ix &= 3; |
273 | |
284 | |
274 | SvGETMAGIC (sv); |
285 | SvGETMAGIC (sv); |
275 | |
286 | |
276 | if (!SvOK (sv)) |
287 | if (!SvOK (sv)) |
277 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
288 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
… | |
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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: $ |