… | |
… | |
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 | /* for historical reasons, MAGIC_undef + MAGIC_R and MAGIC_undef + MAGIC_R_deref are used, too */ |
30 | |
31 | |
31 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
32 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
32 | |
33 | |
|
|
34 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
33 | static CV *storable_mstore, *storable_mretrieve; |
35 | static CV *storable_mstore, *storable_mretrieve; |
34 | |
36 | |
|
|
37 | #if Size_t_size > 4 |
|
|
38 | # define MAX_LENGTH ((Size_t)0x80000000L) |
|
|
39 | #else |
|
|
40 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
|
|
41 | #endif |
|
|
42 | |
35 | static SV * |
43 | static SV * |
36 | compress_sv (SV *data, char cprepend, char uprepend) |
44 | compress_sv (SV *data, char cprepend, int uprepend) |
37 | { |
45 | { |
38 | STRLEN usize, csize; |
46 | STRLEN usize, csize; |
39 | char *src = (char *)SvPV (data, usize); |
47 | char *src = (char *)SvPV (data, usize); |
40 | |
48 | |
41 | if (usize) |
49 | if (usize) |
… | |
… | |
48 | dst = (unsigned char *)SvPVX (ret); |
56 | dst = (unsigned char *)SvPVX (ret); |
49 | |
57 | |
50 | if (cprepend) |
58 | if (cprepend) |
51 | dst[skip++] = cprepend; |
59 | dst[skip++] = cprepend; |
52 | |
60 | |
53 | if (usize < 0x80) |
61 | if (usize <= 0x7f) |
54 | { |
62 | { |
55 | dst[skip++] = usize; |
63 | dst[skip++] = usize; |
56 | } |
64 | } |
57 | else if (usize < 0x800) |
65 | else if (usize <= 0x7ff) |
58 | { |
66 | { |
59 | dst[skip++] = (( usize >> 6) | 0xc0); |
67 | dst[skip++] = (( usize >> 6) | 0xc0); |
60 | dst[skip++] = (( usize & 0x3f) | 0x80); |
68 | dst[skip++] = (( usize & 0x3f) | 0x80); |
61 | } |
69 | } |
62 | else if (usize < 0x10000) |
70 | else if (usize <= 0xffff) |
63 | { |
71 | { |
64 | dst[skip++] = (( usize >> 12) | 0xe0); |
72 | dst[skip++] = (( usize >> 12) | 0xe0); |
65 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
73 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
66 | dst[skip++] = (( usize & 0x3f) | 0x80); |
74 | dst[skip++] = (( usize & 0x3f) | 0x80); |
67 | } |
75 | } |
68 | else if (usize < 0x200000) |
76 | else if (usize <= 0x1fffff) |
69 | { |
77 | { |
70 | dst[skip++] = (( usize >> 18) | 0xf0); |
78 | dst[skip++] = (( usize >> 18) | 0xf0); |
71 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
79 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
72 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
73 | dst[skip++] = (( usize & 0x3f) | 0x80); |
81 | dst[skip++] = (( usize & 0x3f) | 0x80); |
74 | } |
82 | } |
75 | else if (usize < 0x4000000) |
83 | else if (usize <= 0x3ffffff) |
76 | { |
84 | { |
77 | dst[skip++] = (( usize >> 24) | 0xf8); |
85 | dst[skip++] = (( usize >> 24) | 0xf8); |
78 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
86 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
79 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
87 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
88 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
81 | dst[skip++] = (( usize & 0x3f) | 0x80); |
89 | dst[skip++] = (( usize & 0x3f) | 0x80); |
82 | } |
90 | } |
|
|
91 | else if (usize <= 0x7fffffff) |
|
|
92 | { |
|
|
93 | dst[skip++] = (( usize >> 30) | 0xfc); |
|
|
94 | dst[skip++] = (((usize >> 24) & 0x3f) | 0x80); |
|
|
95 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
|
|
96 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
|
|
97 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
|
|
98 | dst[skip++] = (( usize & 0x3f) | 0x80); |
|
|
99 | } |
83 | else |
100 | else |
84 | croak ("compress can only compress up to %ld bytes", 0x4000000-1); |
101 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
85 | |
102 | |
86 | /* 11 bytes is the smallest compressible string */ |
103 | /* 11 bytes is the smallest compressible string */ |
87 | csize = usize < 11 ? 0 : |
104 | csize = usize < 11 ? 0 : |
88 | lzf_compress (src, usize, |
105 | lzf_compress (src, usize, |
89 | dst + skip, |
106 | dst + skip, |
… | |
… | |
91 | |
108 | |
92 | if (csize) |
109 | if (csize) |
93 | { |
110 | { |
94 | SvCUR_set (ret, csize + skip); |
111 | SvCUR_set (ret, csize + skip); |
95 | } |
112 | } |
96 | else if (!uprepend) |
113 | else if (uprepend < 0) |
97 | { |
114 | { |
98 | SvREFCNT_dec (ret); |
115 | SvREFCNT_dec (ret); |
99 | ret = SvREFCNT_inc (data); |
116 | ret = SvREFCNT_inc (data); |
100 | } |
117 | } |
101 | else |
118 | else |
102 | { |
119 | { |
103 | *dst++ = 0; |
120 | *dst++ = uprepend; |
104 | |
121 | |
105 | Move ((void *)src, (void *)dst, usize, unsigned char); |
122 | Move ((void *)src, (void *)dst, usize, unsigned char); |
106 | |
123 | |
107 | SvCUR_set (ret, usize + 1); |
124 | SvCUR_set (ret, usize + 1); |
108 | } |
125 | } |
… | |
… | |
126 | |
143 | |
127 | csize -= skip; |
144 | csize -= skip; |
128 | |
145 | |
129 | if (src[0]) |
146 | if (src[0]) |
130 | { |
147 | { |
131 | if (!(src[0] & 0x80)) |
148 | if (!(src[0] & 0x80) && csize >= 1) |
132 | { |
149 | { |
133 | csize -= 1; |
150 | csize -= 1; |
134 | usize = *src++ & 0xff; |
151 | usize = *src++ & 0xff; |
135 | } |
152 | } |
136 | else if (!(src[0] & 0x20)) |
153 | else if (!(src[0] & 0x20) && csize >= 2) |
137 | { |
154 | { |
138 | csize -= 2; |
155 | csize -= 2; |
139 | usize = *src++ & 0x1f; |
156 | usize = *src++ & 0x1f; |
140 | usize = (usize << 6) | (*src++ & 0x3f); |
157 | usize = (usize << 6) | (*src++ & 0x3f); |
141 | } |
158 | } |
142 | else if (!(src[0] & 0x10)) |
159 | else if (!(src[0] & 0x10) && csize >= 3) |
143 | { |
160 | { |
144 | csize -= 3; |
161 | csize -= 3; |
145 | usize = *src++ & 0x0f; |
162 | usize = *src++ & 0x0f; |
146 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
147 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
148 | } |
165 | } |
149 | else if (!(src[0] & 0x08)) |
166 | else if (!(src[0] & 0x08) && csize >= 4) |
150 | { |
167 | { |
151 | csize -= 4; |
168 | csize -= 4; |
152 | usize = *src++ & 0x07; |
169 | usize = *src++ & 0x07; |
153 | usize = (usize << 6) | (*src++ & 0x3f); |
170 | usize = (usize << 6) | (*src++ & 0x3f); |
154 | usize = (usize << 6) | (*src++ & 0x3f); |
171 | usize = (usize << 6) | (*src++ & 0x3f); |
155 | usize = (usize << 6) | (*src++ & 0x3f); |
172 | usize = (usize << 6) | (*src++ & 0x3f); |
156 | } |
173 | } |
157 | else if (!(src[0] & 0x04)) |
174 | else if (!(src[0] & 0x04) && csize >= 5) |
158 | { |
175 | { |
159 | csize -= 5; |
176 | csize -= 5; |
160 | usize = *src++ & 0x03; |
177 | usize = *src++ & 0x03; |
161 | usize = (usize << 6) | (*src++ & 0x3f); |
178 | usize = (usize << 6) | (*src++ & 0x3f); |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
179 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
180 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
181 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | } |
182 | } |
|
|
183 | else if (!(src[0] & 0x02) && csize >= 6) |
|
|
184 | { |
|
|
185 | csize -= 6; |
|
|
186 | usize = *src++ & 0x01; |
|
|
187 | usize = (usize << 6) | (*src++ & 0x3f); |
|
|
188 | usize = (usize << 6) | (*src++ & 0x3f); |
|
|
189 | usize = (usize << 6) | (*src++ & 0x3f); |
|
|
190 | usize = (usize << 6) | (*src++ & 0x3f); |
|
|
191 | usize = (usize << 6) | (*src++ & 0x3f); |
|
|
192 | } |
166 | else |
193 | else |
167 | croak ("compressed data corrupted"); |
194 | croak ("compressed data corrupted (invalid length)"); |
|
|
195 | |
|
|
196 | if (!usize) |
|
|
197 | croak ("compressed data corrupted (invalid length)"); |
168 | |
198 | |
169 | ret = NEWSV (0, usize); |
199 | ret = NEWSV (0, usize); |
170 | SvPOK_only (ret); |
200 | SvPOK_only (ret); |
171 | dst = SvPVX (ret); |
201 | dst = SvPVX (ret); |
172 | |
202 | |
173 | if (lzf_decompress (src, csize, dst, usize) != usize) |
203 | if (lzf_decompress (src, csize, dst, usize) != usize) |
174 | croak ("compressed data corrupted", csize, skip, usize); |
204 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
175 | } |
205 | } |
176 | else |
206 | else |
177 | { |
207 | { |
178 | usize = csize - 1; |
208 | usize = csize - 1; |
179 | ret = NEWSV (0, usize); |
209 | ret = NEWSV (0, usize | 1); |
180 | SvPOK_only (ret); |
210 | SvPOK_only (ret); |
181 | |
211 | |
182 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
212 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
183 | } |
213 | } |
184 | |
214 | |
… | |
… | |
192 | |
222 | |
193 | static void |
223 | static void |
194 | need_storable(void) |
224 | need_storable(void) |
195 | { |
225 | { |
196 | #if PATCHLEVEL < 6 |
226 | #if PATCHLEVEL < 6 |
|
|
227 | char req[8192]; |
|
|
228 | sprintf (req, "require %s;", SvPV_nolen (serializer_package)); |
197 | perl_eval_pv ("require Storable;", 1); |
229 | perl_eval_pv (req, 1); |
198 | #else |
230 | #else |
199 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
231 | load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); |
200 | #endif |
232 | #endif |
201 | |
233 | |
202 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
234 | storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
203 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
235 | storable_mretrieve = GvCV (gv_fetchpv (SvPV_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); |
204 | } |
236 | } |
205 | |
237 | |
206 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
238 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
|
|
239 | |
|
|
240 | BOOT: |
|
|
241 | serializer_package = newSVpv ("Storable", 0); |
|
|
242 | serializer_mstore = newSVpv ("Storable::net_mstore", 0); |
|
|
243 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
|
|
244 | |
|
|
245 | void |
|
|
246 | set_serializer(package, mstore, mretrieve) |
|
|
247 | SV * package |
|
|
248 | SV * mstore |
|
|
249 | SV * mretrieve |
|
|
250 | PROTOTYPE: $$$ |
|
|
251 | PPCODE: |
|
|
252 | SvSetSV (serializer_package , package ); |
|
|
253 | SvSetSV (serializer_mstore , mstore ); |
|
|
254 | SvSetSV (serializer_mretrieve, mretrieve); |
|
|
255 | storable_mstore = |
|
|
256 | storable_mretrieve = 0; |
207 | |
257 | |
208 | void |
258 | void |
209 | compress(data) |
259 | compress(data) |
210 | SV * data |
260 | SV * data |
211 | PROTOTYPE: $ |
261 | PROTOTYPE: $ |
212 | PPCODE: |
262 | PPCODE: |
213 | XPUSHs (sv_2mortal (compress_sv (data, 0, 1))); |
263 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
214 | |
264 | |
215 | void |
265 | void |
216 | decompress(data) |
266 | decompress(data) |
217 | SV * data |
267 | SV * data |
218 | PROTOTYPE: $ |
268 | PROTOTYPE: $ |
… | |
… | |
226 | sfreeze_cr = 1 |
276 | sfreeze_cr = 1 |
227 | sfreeze_c = 2 |
277 | sfreeze_c = 2 |
228 | PROTOTYPE: $ |
278 | PROTOTYPE: $ |
229 | PPCODE: |
279 | PPCODE: |
230 | |
280 | |
|
|
281 | SvGETMAGIC (sv); |
|
|
282 | |
231 | if (!SvOK (sv)) |
283 | if (!SvOK (sv)) |
232 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
284 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
|
|
285 | else if (SvROK (sv) |
233 | else if (SvTYPE(sv) != SVt_IV |
286 | || (SvTYPE(sv) != SVt_IV |
234 | && SvTYPE(sv) != SVt_NV |
287 | && SvTYPE(sv) != SVt_NV |
|
|
288 | && SvTYPE(sv) != SVt_PV |
|
|
289 | && SvTYPE(sv) != SVt_PVIV |
|
|
290 | && SvTYPE(sv) != SVt_PVNV |
235 | && SvTYPE(sv) != SVt_PV) /* mstore */ |
291 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
236 | { |
292 | { |
237 | int deref = !SvROK (sv); |
293 | int deref = !SvROK (sv); |
238 | |
294 | |
239 | if (!storable_mstore) |
295 | if (!storable_mstore) |
240 | need_storable (); |
296 | need_storable (); |
… | |
… | |
251 | |
307 | |
252 | SPAGAIN; |
308 | SPAGAIN; |
253 | |
309 | |
254 | sv = POPs; |
310 | sv = POPs; |
255 | |
311 | |
256 | if (SvPVX (sv)[0] != MAGIC_R) |
312 | if (SvPVX (sv)[0] == MAGIC_R) |
257 | croak ("Storable format changed, need newer version of Compress::LZF"); |
|
|
258 | |
|
|
259 | if (ix) /* compress */ |
|
|
260 | XPUSHs (sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, 0))); |
|
|
261 | else |
|
|
262 | { |
313 | { |
263 | if (deref) |
314 | if (deref) |
264 | SvPVX (sv)[0] = MAGIC_R_deref; |
315 | SvPVX (sv)[0] = MAGIC_R_deref; |
265 | |
|
|
266 | XPUSHs (sv); |
|
|
267 | } |
316 | } |
|
|
317 | else |
|
|
318 | { |
|
|
319 | char pfx[2]; |
|
|
320 | |
|
|
321 | pfx[0] = MAGIC_undef; |
|
|
322 | pfx[1] = deref ? MAGIC_R_deref : MAGIC_R; |
|
|
323 | |
|
|
324 | sv_insert (sv, 0, 0, pfx, 2); |
|
|
325 | } |
|
|
326 | |
|
|
327 | if (ix) /* compress */ |
|
|
328 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
|
|
329 | |
|
|
330 | XPUSHs (sv); |
268 | } |
331 | } |
269 | else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
332 | 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 */ |
333 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
271 | else if (ix == 2) /* compress always */ |
334 | else if (ix == 2) /* compress always */ |
272 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
335 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
|
|
336 | else if (SvNIOK (sv)) /* don't compress */ |
|
|
337 | { |
|
|
338 | STRLEN len; |
|
|
339 | char *s = SvPV (sv, len); |
|
|
340 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
|
|
341 | } |
273 | else /* don't compress */ |
342 | else /* don't compress */ |
274 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
343 | XPUSHs (sv_2mortal (newSVsv (sv))); |
275 | |
344 | |
276 | void |
345 | void |
277 | sthaw(sv) |
346 | sthaw(sv) |
278 | SV * sv |
347 | SV * sv |
279 | PROTOTYPE: $ |
348 | PROTOTYPE: $ |
280 | PPCODE: |
349 | PPCODE: |
281 | |
350 | { |
|
|
351 | STRLEN svlen; |
282 | int deref = 0; |
352 | int deref = 0; |
283 | |
353 | |
284 | SvGETMAGIC (sv); |
354 | SvGETMAGIC (sv); |
285 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
355 | if (SvPOK (sv) && IN_RANGE (SvPV (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
286 | { |
356 | { |
|
|
357 | redo: |
|
|
358 | |
287 | switch (SvPVX (sv)[0]) |
359 | switch (SvPVX (sv)[0]) |
288 | { |
360 | { |
289 | case MAGIC_undef: |
361 | case MAGIC_undef: |
|
|
362 | if (svlen <= 1) |
290 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
363 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
|
|
364 | else |
|
|
365 | { |
|
|
366 | if (SvPVX (sv)[1] == MAGIC_R_deref) |
|
|
367 | deref = 1; |
|
|
368 | else if (SvPVX (sv)[1] != MAGIC_R) |
|
|
369 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
|
|
370 | |
|
|
371 | sv_chop (sv, SvPVX (sv) + 2); |
|
|
372 | |
|
|
373 | if (!storable_mstore) |
|
|
374 | need_storable (); |
|
|
375 | |
|
|
376 | PUSHMARK (SP); |
|
|
377 | XPUSHs (sv); |
|
|
378 | PUTBACK; |
|
|
379 | |
|
|
380 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
|
|
381 | croak ("Storable::mstore didn't return a single scalar"); |
|
|
382 | |
|
|
383 | SPAGAIN; |
|
|
384 | |
|
|
385 | if (deref) |
|
|
386 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
|
|
387 | else |
|
|
388 | SETs (sv_2mortal (newSVsv (TOPs))); |
|
|
389 | } |
291 | break; |
390 | break; |
292 | |
391 | |
293 | case MAGIC_U: |
392 | case MAGIC_U: |
294 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
393 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
295 | break; |
394 | break; |
296 | |
395 | |
297 | case MAGIC_C: |
396 | case MAGIC_C: |
298 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
397 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
299 | break; |
398 | break; |
|
|
399 | |
|
|
400 | case MAGIC_R_deref: |
|
|
401 | deref = 1; |
|
|
402 | SvPVX (sv)[0] = MAGIC_R; |
|
|
403 | goto handle_MAGIC_R; |
300 | |
404 | |
301 | case MAGIC_CR_deref: |
405 | case MAGIC_CR_deref: |
302 | deref = 1; |
406 | deref = 1; |
303 | case MAGIC_CR: |
407 | case MAGIC_CR: |
304 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
408 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
305 | case MAGIC_R_deref: |
409 | if (deref) |
306 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
410 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
307 | { |
|
|
308 | deref = 1; |
|
|
309 | SvPVX (sv)[0] = MAGIC_R; |
411 | SvPVX (sv)[0] = MAGIC_R; |
310 | } |
412 | |
|
|
413 | goto redo; |
|
|
414 | |
311 | case MAGIC_R: |
415 | case MAGIC_R: |
|
|
416 | handle_MAGIC_R: |
312 | if (!storable_mstore) |
417 | if (!storable_mstore) |
313 | need_storable (); |
418 | need_storable (); |
314 | |
419 | |
315 | PUSHMARK (SP); |
420 | PUSHMARK (SP); |
316 | XPUSHs (sv); |
421 | XPUSHs (sv); |
… | |
… | |
321 | |
426 | |
322 | SPAGAIN; |
427 | SPAGAIN; |
323 | |
428 | |
324 | if (deref) |
429 | if (deref) |
325 | { |
430 | { |
326 | SV *ref = SvREFCNT_inc (SvRV (TOPs)); |
431 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
327 | |
|
|
328 | SvREFCNT_dec (TOPs); /* destroy superfluous ref */ |
|
|
329 | SETs (ref); |
|
|
330 | |
432 | |
331 | if (SvPVX (sv)[0] == MAGIC_R) |
433 | if (SvPVX (sv)[0] == MAGIC_R) |
332 | SvPVX (sv)[0] = MAGIC_R; |
434 | SvPVX (sv)[0] = MAGIC_R_deref; |
333 | } |
435 | } |
334 | |
436 | else |
335 | XPUSHs (POPs); /* this is a nop, hopefully */ |
437 | SETs (sv_2mortal (newSVsv (TOPs))); |
336 | |
438 | |
337 | break; |
439 | break; |
338 | |
440 | |
339 | default: |
441 | default: |
340 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
442 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
341 | } |
443 | } |
342 | } |
444 | } |
343 | else |
445 | else |
344 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
446 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
447 | } |
|
|
448 | |