1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | /* try to be compatible with older perls */ |
5 | #define LZF_STANDALONE 1 |
6 | /* SvPV_nolen() macro first defined in 5.005_55 */ |
6 | #define LZF_STATE_ARG 1 |
7 | /* this is slow, not threadsafe, but works */ |
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8 | #include "patchlevel.h" |
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9 | #if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55)) |
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10 | static STRLEN nolen_na; |
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11 | # define SvPV_nolen(sv) SvPV ((sv), nolen_na) |
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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 |
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16 | |
7 | |
17 | #include "lzf_c.c" |
8 | #include "lzf_c.c" |
18 | #include "lzf_d.c" |
9 | #include "lzf_d.c" |
19 | |
10 | |
20 | /* we re-use the storable header for our purposes */ |
11 | /* we re-use the storable header for our purposes */ |
… | |
… | |
25 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
16 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
26 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
17 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
27 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
18 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
28 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
19 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
20 | #define MAGIC_HI 7 /* room for one higher storable major */ |
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21 | /* for historical reasons, MAGIC_undef + MAGIC_R and MAGIC_undef + MAGIC_R_deref are used, too */ |
30 | |
22 | |
31 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
23 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
32 | |
24 | |
33 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
25 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
34 | static CV *storable_mstore, *storable_mretrieve; |
26 | static CV *storable_mstore, *storable_mretrieve; |
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27 | |
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28 | #if Size_t_size > 4 |
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29 | # define MAX_LENGTH ((Size_t)0x80000000L) |
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30 | #else |
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31 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
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32 | #endif |
35 | |
33 | |
36 | static SV * |
34 | static SV * |
37 | compress_sv (SV *data, char cprepend, int uprepend) |
35 | compress_sv (SV *data, char cprepend, int uprepend) |
38 | { |
36 | { |
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37 | LZF_STATE *state; |
39 | STRLEN usize, csize; |
38 | STRLEN usize, csize; |
40 | char *src = (char *)SvPV (data, usize); |
39 | char *src = (char *)SvPVbyte (data, usize); |
41 | |
40 | |
42 | if (usize) |
41 | if (usize) |
43 | { |
42 | { |
44 | SV *ret = NEWSV (0, usize + 1); |
43 | SV *ret = NEWSV (0, usize + 1); |
45 | unsigned char *dst; |
44 | unsigned char *dst; |
… | |
… | |
49 | dst = (unsigned char *)SvPVX (ret); |
48 | dst = (unsigned char *)SvPVX (ret); |
50 | |
49 | |
51 | if (cprepend) |
50 | if (cprepend) |
52 | dst[skip++] = cprepend; |
51 | dst[skip++] = cprepend; |
53 | |
52 | |
54 | if (usize < 0x80) |
53 | if (usize <= 0x7f) |
55 | { |
54 | { |
56 | dst[skip++] = usize; |
55 | dst[skip++] = usize; |
57 | } |
56 | } |
58 | else if (usize < 0x800) |
57 | else if (usize <= 0x7ff) |
59 | { |
58 | { |
60 | dst[skip++] = (( usize >> 6) | 0xc0); |
59 | dst[skip++] = (( usize >> 6) | 0xc0); |
61 | dst[skip++] = (( usize & 0x3f) | 0x80); |
60 | dst[skip++] = (( usize & 0x3f) | 0x80); |
62 | } |
61 | } |
63 | else if (usize < 0x10000) |
62 | else if (usize <= 0xffff) |
64 | { |
63 | { |
65 | dst[skip++] = (( usize >> 12) | 0xe0); |
64 | dst[skip++] = (( usize >> 12) | 0xe0); |
66 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
65 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
67 | dst[skip++] = (( usize & 0x3f) | 0x80); |
66 | dst[skip++] = (( usize & 0x3f) | 0x80); |
68 | } |
67 | } |
69 | else if (usize < 0x200000) |
68 | else if (usize <= 0x1fffff) |
70 | { |
69 | { |
71 | dst[skip++] = (( usize >> 18) | 0xf0); |
70 | dst[skip++] = (( usize >> 18) | 0xf0); |
72 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
71 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
73 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
72 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
74 | dst[skip++] = (( usize & 0x3f) | 0x80); |
73 | dst[skip++] = (( usize & 0x3f) | 0x80); |
75 | } |
74 | } |
76 | else if (usize < 0x4000000) |
75 | else if (usize <= 0x3ffffff) |
77 | { |
76 | { |
78 | dst[skip++] = (( usize >> 24) | 0xf8); |
77 | dst[skip++] = (( usize >> 24) | 0xf8); |
79 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
78 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
79 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
81 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
82 | dst[skip++] = (( usize & 0x3f) | 0x80); |
81 | dst[skip++] = (( usize & 0x3f) | 0x80); |
83 | } |
82 | } |
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83 | else if (usize <= 0x7fffffff) |
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84 | { |
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85 | dst[skip++] = (( usize >> 30) | 0xfc); |
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86 | dst[skip++] = (((usize >> 24) & 0x3f) | 0x80); |
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87 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
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88 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
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89 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
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90 | dst[skip++] = (( usize & 0x3f) | 0x80); |
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91 | } |
84 | else |
92 | else |
85 | croak ("compress can only compress up to %ld bytes", 0x4000000-1); |
93 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
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94 | |
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95 | New (0, state, 1, LZF_STATE); |
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96 | if (!state) |
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97 | croak ("Compress::LZF unable to allocate memory for compression state"); |
86 | |
98 | |
87 | /* 11 bytes is the smallest compressible string */ |
99 | /* 11 bytes is the smallest compressible string */ |
88 | csize = usize < 11 ? 0 : |
100 | csize = usize < 11 ? 0 : |
89 | lzf_compress (src, usize, |
101 | lzf_compress (src, usize, dst + skip, usize - skip, *state); |
90 | dst + skip, |
102 | |
91 | usize - skip); |
103 | Safefree (state); |
92 | |
104 | |
93 | if (csize) |
105 | if (csize) |
94 | { |
106 | { |
95 | SvCUR_set (ret, csize + skip); |
107 | SvCUR_set (ret, csize + skip); |
96 | } |
108 | } |
… | |
… | |
116 | |
128 | |
117 | static SV * |
129 | static SV * |
118 | decompress_sv (SV *data, int skip) |
130 | decompress_sv (SV *data, int skip) |
119 | { |
131 | { |
120 | STRLEN usize, csize; |
132 | STRLEN usize, csize; |
121 | unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; |
133 | unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip; |
122 | |
134 | |
123 | if (csize) |
135 | if (csize) |
124 | { |
136 | { |
125 | void *dst; |
137 | void *dst; |
126 | SV *ret; |
138 | SV *ret; |
127 | |
139 | |
128 | csize -= skip; |
140 | csize -= skip; |
129 | |
141 | |
130 | if (src[0]) |
142 | if (src[0]) |
131 | { |
143 | { |
132 | if (!(src[0] & 0x80)) |
144 | if (!(src[0] & 0x80) && csize >= 1) |
133 | { |
145 | { |
134 | csize -= 1; |
146 | csize -= 1; |
135 | usize = *src++ & 0xff; |
147 | usize = *src++ & 0xff; |
136 | } |
148 | } |
137 | else if (!(src[0] & 0x20)) |
149 | else if (!(src[0] & 0x20) && csize >= 2) |
138 | { |
150 | { |
139 | csize -= 2; |
151 | csize -= 2; |
140 | usize = *src++ & 0x1f; |
152 | usize = *src++ & 0x1f; |
141 | usize = (usize << 6) | (*src++ & 0x3f); |
153 | usize = (usize << 6) | (*src++ & 0x3f); |
142 | } |
154 | } |
143 | else if (!(src[0] & 0x10)) |
155 | else if (!(src[0] & 0x10) && csize >= 3) |
144 | { |
156 | { |
145 | csize -= 3; |
157 | csize -= 3; |
146 | usize = *src++ & 0x0f; |
158 | usize = *src++ & 0x0f; |
147 | usize = (usize << 6) | (*src++ & 0x3f); |
159 | usize = (usize << 6) | (*src++ & 0x3f); |
148 | usize = (usize << 6) | (*src++ & 0x3f); |
160 | usize = (usize << 6) | (*src++ & 0x3f); |
149 | } |
161 | } |
150 | else if (!(src[0] & 0x08)) |
162 | else if (!(src[0] & 0x08) && csize >= 4) |
151 | { |
163 | { |
152 | csize -= 4; |
164 | csize -= 4; |
153 | usize = *src++ & 0x07; |
165 | usize = *src++ & 0x07; |
154 | usize = (usize << 6) | (*src++ & 0x3f); |
166 | usize = (usize << 6) | (*src++ & 0x3f); |
155 | usize = (usize << 6) | (*src++ & 0x3f); |
167 | usize = (usize << 6) | (*src++ & 0x3f); |
156 | usize = (usize << 6) | (*src++ & 0x3f); |
168 | usize = (usize << 6) | (*src++ & 0x3f); |
157 | } |
169 | } |
158 | else if (!(src[0] & 0x04)) |
170 | else if (!(src[0] & 0x04) && csize >= 5) |
159 | { |
171 | { |
160 | csize -= 5; |
172 | csize -= 5; |
161 | usize = *src++ & 0x03; |
173 | usize = *src++ & 0x03; |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
174 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
175 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
176 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | usize = (usize << 6) | (*src++ & 0x3f); |
177 | usize = (usize << 6) | (*src++ & 0x3f); |
166 | } |
178 | } |
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179 | else if (!(src[0] & 0x02) && csize >= 6) |
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180 | { |
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181 | csize -= 6; |
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182 | usize = *src++ & 0x01; |
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183 | usize = (usize << 6) | (*src++ & 0x3f); |
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184 | usize = (usize << 6) | (*src++ & 0x3f); |
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185 | usize = (usize << 6) | (*src++ & 0x3f); |
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186 | usize = (usize << 6) | (*src++ & 0x3f); |
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187 | usize = (usize << 6) | (*src++ & 0x3f); |
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188 | } |
167 | else |
189 | else |
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190 | croak ("compressed data corrupted (invalid length)"); |
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191 | |
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192 | if (!usize) |
168 | croak ("compressed data corrupted (invalid length)"); |
193 | croak ("compressed data corrupted (invalid length)"); |
169 | |
194 | |
170 | ret = NEWSV (0, usize); |
195 | ret = NEWSV (0, usize); |
171 | SvPOK_only (ret); |
196 | SvPOK_only (ret); |
172 | dst = SvPVX (ret); |
197 | dst = SvPVX (ret); |
173 | |
198 | |
174 | if (lzf_decompress (src, csize, dst, usize) != usize) |
199 | if (lzf_decompress (src, csize, dst, usize) != usize) |
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200 | { |
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201 | SvREFCNT_dec (ret); |
175 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
202 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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203 | } |
176 | } |
204 | } |
177 | else |
205 | else |
178 | { |
206 | { |
179 | usize = csize - 1; |
207 | usize = csize - 1; |
180 | ret = NEWSV (0, usize); |
208 | ret = NEWSV (0, usize | 1); |
181 | SvPOK_only (ret); |
209 | SvPOK_only (ret); |
182 | |
210 | |
183 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
211 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
184 | } |
212 | } |
185 | |
213 | |
… | |
… | |
192 | } |
220 | } |
193 | |
221 | |
194 | static void |
222 | static void |
195 | need_storable(void) |
223 | need_storable(void) |
196 | { |
224 | { |
197 | #if PATCHLEVEL < 6 |
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198 | char req[8192]; |
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199 | sprintf (req, "require %s;", SvPV_nolen (serializer_package)); |
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200 | perl_eval_pv (req, 1); |
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201 | #else |
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202 | load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); |
225 | load_module (PERL_LOADMOD_NOIMPORT, serializer_package, Nullsv); |
203 | #endif |
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204 | |
226 | |
205 | storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
227 | storable_mstore = GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
206 | storable_mretrieve = GvCV (gv_fetchpv (SvPV_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); |
228 | storable_mretrieve = GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); |
207 | } |
229 | } |
208 | |
230 | |
209 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
231 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
210 | |
232 | |
211 | BOOT: |
233 | BOOT: |
212 | serializer_package = newSVpv ("Storable", 0); |
234 | serializer_package = newSVpv ("Storable", 0); |
213 | serializer_mstore = newSVpv ("Storable::mstore", 0); |
235 | serializer_mstore = newSVpv ("Storable::net_mstore", 0); |
214 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
236 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
215 | |
237 | |
216 | void |
238 | void |
217 | set_serializer(package, mstore, mretrieve) |
239 | set_serializer(package, mstore, mretrieve) |
218 | SV * package |
240 | SV * package |
… | |
… | |
252 | SvGETMAGIC (sv); |
274 | SvGETMAGIC (sv); |
253 | |
275 | |
254 | if (!SvOK (sv)) |
276 | if (!SvOK (sv)) |
255 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
277 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
256 | else if (SvROK (sv) |
278 | else if (SvROK (sv) |
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279 | || SvUTF8 (sv) |
257 | || (SvTYPE(sv) != SVt_IV |
280 | || (SvTYPE(sv) != SVt_IV |
258 | && SvTYPE(sv) != SVt_NV |
281 | && SvTYPE(sv) != SVt_NV |
259 | && SvTYPE(sv) != SVt_PV |
282 | && SvTYPE(sv) != SVt_PV |
260 | && SvTYPE(sv) != SVt_PVIV |
283 | && SvTYPE(sv) != SVt_PVIV |
261 | && SvTYPE(sv) != SVt_PVNV |
284 | && SvTYPE(sv) != SVt_PVNV |
262 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
285 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
263 | { |
286 | { |
264 | int deref = !SvROK (sv); |
287 | int deref = !SvROK (sv); |
265 | |
288 | |
266 | if (!storable_mstore) |
289 | if (!storable_mstore) |
267 | need_storable (); |
290 | need_storable (); |
… | |
… | |
278 | |
301 | |
279 | SPAGAIN; |
302 | SPAGAIN; |
280 | |
303 | |
281 | sv = POPs; |
304 | sv = POPs; |
282 | |
305 | |
283 | if (SvPVX (sv)[0] != MAGIC_R) |
306 | if (SvPVX (sv)[0] == MAGIC_R) |
284 | croak ("Storable format changed, need newer version of Compress::LZF"); |
307 | { |
285 | |
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286 | if (deref) |
308 | if (deref) |
287 | SvPVX (sv)[0] = MAGIC_R_deref; |
309 | SvPVX (sv)[0] = MAGIC_R_deref; |
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310 | } |
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311 | else |
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312 | { |
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313 | char pfx[2]; |
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314 | |
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315 | pfx[0] = MAGIC_undef; |
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316 | pfx[1] = deref ? MAGIC_R_deref : MAGIC_R; |
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317 | |
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318 | sv_insert (sv, 0, 0, pfx, 2); |
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319 | } |
288 | |
320 | |
289 | if (ix) /* compress */ |
321 | if (ix) /* compress */ |
290 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
322 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
291 | |
323 | |
292 | XPUSHs (sv); |
324 | XPUSHs (sv); |
… | |
… | |
307 | void |
339 | void |
308 | sthaw(sv) |
340 | sthaw(sv) |
309 | SV * sv |
341 | SV * sv |
310 | PROTOTYPE: $ |
342 | PROTOTYPE: $ |
311 | PPCODE: |
343 | PPCODE: |
312 | |
344 | { |
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345 | STRLEN svlen; |
313 | int deref = 0; |
346 | int deref = 0; |
314 | |
347 | |
315 | SvGETMAGIC (sv); |
348 | SvGETMAGIC (sv); |
316 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
349 | if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
317 | { |
350 | { |
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351 | redo: |
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352 | |
318 | switch (SvPVX (sv)[0]) |
353 | switch (SvPVX (sv)[0]) |
319 | { |
354 | { |
320 | case MAGIC_undef: |
355 | case MAGIC_undef: |
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356 | if (svlen <= 1) |
321 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
357 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
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358 | else |
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359 | { |
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360 | if (SvPVX (sv)[1] == MAGIC_R_deref) |
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361 | deref = 1; |
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362 | else if (SvPVX (sv)[1] != MAGIC_R) |
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363 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
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364 | |
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365 | sv_chop (sv, SvPVX (sv) + 2); |
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366 | |
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367 | if (!storable_mstore) |
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368 | need_storable (); |
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369 | |
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370 | PUSHMARK (SP); |
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371 | XPUSHs (sv); |
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372 | PUTBACK; |
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373 | |
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374 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
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375 | croak ("Storable::mstore didn't return a single scalar"); |
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376 | |
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377 | SPAGAIN; |
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378 | |
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379 | if (deref) |
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380 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
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381 | else |
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382 | SETs (sv_2mortal (newSVsv (TOPs))); |
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383 | } |
322 | break; |
384 | break; |
323 | |
385 | |
324 | case MAGIC_U: |
386 | case MAGIC_U: |
325 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
387 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
326 | break; |
388 | break; |
… | |
… | |
339 | case MAGIC_CR: |
401 | case MAGIC_CR: |
340 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
402 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
341 | if (deref) |
403 | if (deref) |
342 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
404 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
343 | SvPVX (sv)[0] = MAGIC_R; |
405 | SvPVX (sv)[0] = MAGIC_R; |
344 | else |
406 | |
345 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
407 | goto redo; |
346 | |
408 | |
347 | case MAGIC_R: |
409 | case MAGIC_R: |
348 | handle_MAGIC_R: |
410 | handle_MAGIC_R: |
349 | if (!storable_mstore) |
411 | if (!storable_mstore) |
350 | need_storable (); |
412 | need_storable (); |
… | |
… | |
364 | |
426 | |
365 | if (SvPVX (sv)[0] == MAGIC_R) |
427 | if (SvPVX (sv)[0] == MAGIC_R) |
366 | SvPVX (sv)[0] = MAGIC_R_deref; |
428 | SvPVX (sv)[0] = MAGIC_R_deref; |
367 | } |
429 | } |
368 | else |
430 | else |
369 | XPUSHs (POPs); /* this is a nop, hopefully */ |
431 | SETs (sv_2mortal (newSVsv (TOPs))); |
370 | |
432 | |
371 | break; |
433 | break; |
372 | |
434 | |
373 | default: |
435 | default: |
374 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
436 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
375 | } |
437 | } |
376 | } |
438 | } |
377 | else |
439 | else |
378 | XPUSHs (sv_2mortal (newSVsv (sv))); |
440 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
441 | } |
379 | |
442 | |