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 | #include "perlmulticore.h" |
6 | /* SvPV_nolen() macro first defined in 5.005_55 */ |
6 | |
7 | /* this is slow, not threadsafe, but works */ |
7 | #define LZF_STANDALONE 1 |
8 | #include "patchlevel.h" |
8 | #define LZF_STATE_ARG 1 |
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 | |
9 | |
17 | #include "lzf_c.c" |
10 | #include "lzf_c.c" |
18 | #include "lzf_d.c" |
11 | #include "lzf_d.c" |
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12 | #include "lzf_c_best.c" |
19 | |
13 | |
20 | /* we re-use the storable header for our purposes */ |
14 | /* we re-use the storable header for our purposes */ |
21 | #define MAGIC_LO 0 |
15 | #define MAGIC_LO 0 |
22 | #define MAGIC_U 0 /* uncompressed data follows */ |
16 | #define MAGIC_U 0 /* uncompressed data follows */ |
23 | #define MAGIC_C 1 /* compressed data follows */ |
17 | #define MAGIC_C 1 /* compressed data follows */ |
… | |
… | |
25 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
19 | #define MAGIC_CR 3 /* storable (reference, freeze), compressed */ |
26 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
20 | #define MAGIC_R 4 /* storable (reference, freeze) */ |
27 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
21 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
28 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
22 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
29 | #define MAGIC_HI 7 /* room for one higher storable major */ |
23 | #define MAGIC_HI 7 /* room for one higher storable major */ |
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24 | /* for historical reasons, MAGIC_undef + MAGIC_R and MAGIC_undef + MAGIC_R_deref are used, too */ |
30 | |
25 | |
31 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
26 | #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l)) |
32 | |
27 | |
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28 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
33 | static CV *storable_mstore, *storable_mretrieve; |
29 | static CV *storable_mstore, *storable_mretrieve; |
34 | |
30 | |
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31 | #if Size_t_size > 4 |
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32 | # define MAX_LENGTH ((Size_t)0x80000000L) |
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33 | #else |
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34 | # define MAX_LENGTH ((Size_t) 0x8000000L) |
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35 | #endif |
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36 | |
35 | static SV * |
37 | static SV * |
36 | compress_sv (SV *data, char cprepend, int uprepend) |
38 | compress_sv (SV *data, char cprepend, int uprepend, int best) |
37 | { |
39 | { |
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40 | LZF_STATE *state; |
38 | STRLEN usize, csize; |
41 | STRLEN usize, csize; |
39 | char *src = (char *)SvPV (data, usize); |
42 | char *src = (char *)SvPVbyte (data, usize); |
40 | |
43 | |
41 | if (usize) |
44 | if (usize) |
42 | { |
45 | { |
43 | SV *ret = NEWSV (0, usize + 1); |
46 | SV *ret = NEWSV (0, usize + 1); |
44 | unsigned char *dst; |
47 | unsigned char *dst; |
… | |
… | |
48 | dst = (unsigned char *)SvPVX (ret); |
51 | dst = (unsigned char *)SvPVX (ret); |
49 | |
52 | |
50 | if (cprepend) |
53 | if (cprepend) |
51 | dst[skip++] = cprepend; |
54 | dst[skip++] = cprepend; |
52 | |
55 | |
53 | if (usize < 0x80) |
56 | if (usize <= 0x7f) |
54 | { |
57 | { |
55 | dst[skip++] = usize; |
58 | dst[skip++] = usize; |
56 | } |
59 | } |
57 | else if (usize < 0x800) |
60 | else if (usize <= 0x7ff) |
58 | { |
61 | { |
59 | dst[skip++] = (( usize >> 6) | 0xc0); |
62 | dst[skip++] = (( usize >> 6) | 0xc0); |
60 | dst[skip++] = (( usize & 0x3f) | 0x80); |
63 | dst[skip++] = (( usize & 0x3f) | 0x80); |
61 | } |
64 | } |
62 | else if (usize < 0x10000) |
65 | else if (usize <= 0xffff) |
63 | { |
66 | { |
64 | dst[skip++] = (( usize >> 12) | 0xe0); |
67 | dst[skip++] = (( usize >> 12) | 0xe0); |
65 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
68 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
66 | dst[skip++] = (( usize & 0x3f) | 0x80); |
69 | dst[skip++] = (( usize & 0x3f) | 0x80); |
67 | } |
70 | } |
68 | else if (usize < 0x200000) |
71 | else if (usize <= 0x1fffff) |
69 | { |
72 | { |
70 | dst[skip++] = (( usize >> 18) | 0xf0); |
73 | dst[skip++] = (( usize >> 18) | 0xf0); |
71 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
74 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
72 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
75 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
73 | dst[skip++] = (( usize & 0x3f) | 0x80); |
76 | dst[skip++] = (( usize & 0x3f) | 0x80); |
74 | } |
77 | } |
75 | else if (usize < 0x4000000) |
78 | else if (usize <= 0x3ffffff) |
76 | { |
79 | { |
77 | dst[skip++] = (( usize >> 24) | 0xf8); |
80 | dst[skip++] = (( usize >> 24) | 0xf8); |
78 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
81 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
79 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
82 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
83 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
81 | dst[skip++] = (( usize & 0x3f) | 0x80); |
84 | dst[skip++] = (( usize & 0x3f) | 0x80); |
82 | } |
85 | } |
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86 | else if (usize <= 0x7fffffff) |
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87 | { |
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88 | dst[skip++] = (( usize >> 30) | 0xfc); |
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89 | dst[skip++] = (((usize >> 24) & 0x3f) | 0x80); |
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90 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
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91 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
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92 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
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93 | dst[skip++] = (( usize & 0x3f) | 0x80); |
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94 | } |
83 | else |
95 | else |
84 | croak ("compress can only compress up to %ld bytes", 0x4000000-1); |
96 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
85 | |
97 | |
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98 | New (0, state, 1, LZF_STATE); |
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99 | if (!state) |
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100 | croak ("Compress::LZF unable to allocate memory for compression state"); |
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101 | |
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102 | if (usize > 1000) perlinterp_release (); |
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 | (best ? lzf_compress_best (src, usize, dst + skip, usize - skip) |
89 | dst + skip, |
106 | : lzf_compress (src, usize, dst + skip, usize - skip, *state)); |
90 | usize - skip); |
107 | if (usize > 1000) perlinterp_acquire (); |
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108 | |
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109 | Safefree (state); |
91 | |
110 | |
92 | if (csize) |
111 | if (csize) |
93 | { |
112 | { |
94 | SvCUR_set (ret, csize + skip); |
113 | SvCUR_set (ret, csize + skip); |
95 | } |
114 | } |
… | |
… | |
115 | |
134 | |
116 | static SV * |
135 | static SV * |
117 | decompress_sv (SV *data, int skip) |
136 | decompress_sv (SV *data, int skip) |
118 | { |
137 | { |
119 | STRLEN usize, csize; |
138 | STRLEN usize, csize; |
120 | unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; |
139 | unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip; |
121 | |
140 | |
122 | if (csize) |
141 | if (csize) |
123 | { |
142 | { |
124 | void *dst; |
143 | void *dst; |
125 | SV *ret; |
144 | SV *ret; |
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145 | int res; |
126 | |
146 | |
127 | csize -= skip; |
147 | csize -= skip; |
128 | |
148 | |
129 | if (src[0]) |
149 | if (src[0]) |
130 | { |
150 | { |
131 | if (!(src[0] & 0x80)) |
151 | if (!(src[0] & 0x80) && csize >= 1) |
132 | { |
152 | { |
133 | csize -= 1; |
153 | csize -= 1; |
134 | usize = *src++ & 0xff; |
154 | usize = *src++ & 0xff; |
135 | } |
155 | } |
136 | else if (!(src[0] & 0x20)) |
156 | else if (!(src[0] & 0x20) && csize >= 2) |
137 | { |
157 | { |
138 | csize -= 2; |
158 | csize -= 2; |
139 | usize = *src++ & 0x1f; |
159 | usize = *src++ & 0x1f; |
140 | usize = (usize << 6) | (*src++ & 0x3f); |
160 | usize = (usize << 6) | (*src++ & 0x3f); |
141 | } |
161 | } |
142 | else if (!(src[0] & 0x10)) |
162 | else if (!(src[0] & 0x10) && csize >= 3) |
143 | { |
163 | { |
144 | csize -= 3; |
164 | csize -= 3; |
145 | usize = *src++ & 0x0f; |
165 | usize = *src++ & 0x0f; |
146 | usize = (usize << 6) | (*src++ & 0x3f); |
166 | usize = (usize << 6) | (*src++ & 0x3f); |
147 | usize = (usize << 6) | (*src++ & 0x3f); |
167 | usize = (usize << 6) | (*src++ & 0x3f); |
148 | } |
168 | } |
149 | else if (!(src[0] & 0x08)) |
169 | else if (!(src[0] & 0x08) && csize >= 4) |
150 | { |
170 | { |
151 | csize -= 4; |
171 | csize -= 4; |
152 | usize = *src++ & 0x07; |
172 | usize = *src++ & 0x07; |
153 | usize = (usize << 6) | (*src++ & 0x3f); |
173 | usize = (usize << 6) | (*src++ & 0x3f); |
154 | usize = (usize << 6) | (*src++ & 0x3f); |
174 | usize = (usize << 6) | (*src++ & 0x3f); |
155 | usize = (usize << 6) | (*src++ & 0x3f); |
175 | usize = (usize << 6) | (*src++ & 0x3f); |
156 | } |
176 | } |
157 | else if (!(src[0] & 0x04)) |
177 | else if (!(src[0] & 0x04) && csize >= 5) |
158 | { |
178 | { |
159 | csize -= 5; |
179 | csize -= 5; |
160 | usize = *src++ & 0x03; |
180 | usize = *src++ & 0x03; |
161 | usize = (usize << 6) | (*src++ & 0x3f); |
181 | usize = (usize << 6) | (*src++ & 0x3f); |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
182 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
183 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
184 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | } |
185 | } |
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186 | else if (!(src[0] & 0x02) && csize >= 6) |
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187 | { |
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188 | csize -= 6; |
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189 | usize = *src++ & 0x01; |
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190 | usize = (usize << 6) | (*src++ & 0x3f); |
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191 | usize = (usize << 6) | (*src++ & 0x3f); |
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192 | usize = (usize << 6) | (*src++ & 0x3f); |
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193 | usize = (usize << 6) | (*src++ & 0x3f); |
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194 | usize = (usize << 6) | (*src++ & 0x3f); |
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195 | } |
166 | else |
196 | else |
167 | croak ("compressed data corrupted"); |
197 | croak ("compressed data corrupted (invalid length)"); |
168 | |
198 | |
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199 | if (!usize) |
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200 | croak ("compressed data corrupted (invalid length)"); |
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201 | |
169 | ret = NEWSV (0, usize); |
202 | ret = NEWSV (0, usize); |
170 | SvPOK_only (ret); |
203 | SvPOK_only (ret); |
171 | dst = SvPVX (ret); |
204 | dst = SvPVX (ret); |
172 | |
205 | |
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206 | if (usize > 2000) perlinterp_release (); |
173 | if (lzf_decompress (src, csize, dst, usize) != usize) |
207 | res = lzf_decompress (src, csize, dst, usize) != usize; |
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208 | if (usize > 2000) perlinterp_acquire (); |
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209 | |
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210 | if (res) |
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211 | { |
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212 | SvREFCNT_dec (ret); |
174 | croak ("compressed data corrupted", csize, skip, usize); |
213 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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214 | } |
175 | } |
215 | } |
176 | else |
216 | else |
177 | { |
217 | { |
178 | usize = csize - 1; |
218 | usize = csize - 1; |
179 | ret = NEWSV (0, usize); |
219 | ret = NEWSV (0, usize | 1); |
180 | SvPOK_only (ret); |
220 | SvPOK_only (ret); |
181 | |
221 | |
182 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
222 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
183 | } |
223 | } |
184 | |
224 | |
… | |
… | |
189 | else |
229 | else |
190 | return newSVpvn ("", 0); |
230 | return newSVpvn ("", 0); |
191 | } |
231 | } |
192 | |
232 | |
193 | static void |
233 | static void |
194 | need_storable(void) |
234 | need_storable (void) |
195 | { |
235 | { |
196 | #if PATCHLEVEL < 6 |
236 | eval_sv (sv_2mortal (newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
197 | perl_eval_pv ("require Storable;", 1); |
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198 | #else |
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199 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
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200 | #endif |
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201 | |
237 | |
202 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
238 | storable_mstore = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV))); |
203 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
239 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
204 | } |
240 | } |
205 | |
241 | |
206 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
242 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
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243 | |
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244 | BOOT: |
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245 | serializer_package = newSVpv ("Storable", 0); |
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246 | serializer_mstore = newSVpv ("Storable::net_mstore", 0); |
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247 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
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248 | |
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249 | void |
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250 | set_serializer(package, mstore, mretrieve) |
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251 | SV * package |
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252 | SV * mstore |
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253 | SV * mretrieve |
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254 | PROTOTYPE: $$$ |
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255 | PPCODE: |
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256 | SvSetSV (serializer_package , package ); |
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257 | SvSetSV (serializer_mstore , mstore ); |
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258 | SvSetSV (serializer_mretrieve, mretrieve); |
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259 | SvREFCNT_dec (storable_mstore ); storable_mstore = 0; |
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260 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
207 | |
261 | |
208 | void |
262 | void |
209 | compress(data) |
263 | compress(data) |
210 | SV * data |
264 | SV * data |
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265 | ALIAS: |
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266 | compress_best = 1 |
211 | PROTOTYPE: $ |
267 | PROTOTYPE: $ |
212 | PPCODE: |
268 | PPCODE: |
213 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
269 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U, ix))); |
214 | |
270 | |
215 | void |
271 | void |
216 | decompress(data) |
272 | decompress(data) |
217 | SV * data |
273 | SV * data |
218 | PROTOTYPE: $ |
274 | PROTOTYPE: $ |
… | |
… | |
221 | |
277 | |
222 | void |
278 | void |
223 | sfreeze(sv) |
279 | sfreeze(sv) |
224 | SV * sv |
280 | SV * sv |
225 | ALIAS: |
281 | ALIAS: |
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282 | sfreeze = 0 |
226 | sfreeze_cr = 1 |
283 | sfreeze_cr = 1 |
227 | sfreeze_c = 2 |
284 | sfreeze_c = 2 |
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285 | sfreeze_best = 4 |
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286 | sfreeze_cr_best = 5 |
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287 | sfreeze_c_best = 6 |
228 | PROTOTYPE: $ |
288 | PROTOTYPE: $ |
229 | PPCODE: |
289 | PPCODE: |
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290 | { |
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291 | int best = ix & 4; |
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292 | ix &= 3; |
230 | |
293 | |
231 | SvGETMAGIC (sv); |
294 | SvGETMAGIC (sv); |
232 | |
295 | |
233 | if (!SvOK (sv)) |
296 | if (!SvOK (sv)) |
234 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
297 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
235 | else if (SvROK (sv) |
298 | else if (SvROK (sv) |
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299 | || SvUTF8 (sv) |
236 | || (SvTYPE(sv) != SVt_IV |
300 | || (SvTYPE(sv) != SVt_IV |
237 | && SvTYPE(sv) != SVt_NV |
301 | && SvTYPE(sv) != SVt_NV |
238 | && SvTYPE(sv) != SVt_PV |
302 | && SvTYPE(sv) != SVt_PV |
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303 | && SvTYPE(sv) != SVt_PVIV |
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304 | && SvTYPE(sv) != SVt_PVNV |
239 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
305 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
240 | { |
306 | { |
241 | int deref = !SvROK (sv); |
307 | int deref = !SvROK (sv); |
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308 | char *pv; |
242 | |
309 | |
243 | if (!storable_mstore) |
310 | if (!storable_mstore) |
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311 | { |
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312 | PUTBACK; |
244 | need_storable (); |
313 | need_storable (); |
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314 | SPAGAIN; |
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315 | } |
245 | |
316 | |
246 | if (deref) |
317 | if (deref) |
247 | sv = newRV_noinc (sv); |
318 | sv = newRV_noinc (sv); |
248 | |
319 | |
249 | PUSHMARK (SP); |
320 | PUSHMARK (SP); |
250 | XPUSHs (sv); |
321 | XPUSHs (sv); |
251 | PUTBACK; |
322 | PUTBACK; |
252 | |
323 | |
253 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
324 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
254 | croak ("Storable::mstore didn't return a single scalar"); |
325 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore)); |
255 | |
326 | |
256 | SPAGAIN; |
327 | SPAGAIN; |
257 | |
328 | |
258 | sv = POPs; |
329 | sv = POPs; |
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330 | pv = SvPV_nolen (sv); |
259 | |
331 | |
260 | if (SvPVX (sv)[0] != MAGIC_R) |
332 | if (*pv == MAGIC_R) |
261 | croak ("Storable format changed, need newer version of Compress::LZF"); |
333 | { |
262 | |
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263 | if (deref) |
334 | if (deref) |
264 | SvPVX (sv)[0] = MAGIC_R_deref; |
335 | *pv = MAGIC_R_deref; |
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336 | } |
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337 | else |
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338 | { |
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339 | char pfx[2]; |
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340 | |
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341 | pfx[0] = MAGIC_undef; |
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342 | pfx[1] = deref ? MAGIC_R_deref : MAGIC_R; |
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343 | |
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344 | sv_insert (sv, 0, 0, pfx, 2); |
|
|
345 | } |
265 | |
346 | |
266 | if (ix) /* compress */ |
347 | if (ix) /* compress */ |
267 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
348 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1, best)); |
268 | |
349 | |
269 | XPUSHs (sv); |
350 | XPUSHs (sv); |
270 | } |
351 | } |
271 | else if (SvTYPE (sv) == SVt_PV && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
352 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
272 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
353 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U, best))); /* need to prefix only */ |
273 | else if (ix == 2) /* compress always */ |
354 | else if (ix == 2) /* compress always */ |
274 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
355 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1, best))); |
|
|
356 | else if (SvNIOK (sv)) /* don't compress */ |
|
|
357 | { |
|
|
358 | STRLEN len; |
|
|
359 | char *s = SvPV (sv, len); |
|
|
360 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
|
|
361 | } |
275 | else /* don't compress */ |
362 | else /* don't compress */ |
276 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
363 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
364 | } |
277 | |
365 | |
278 | void |
366 | void |
279 | sthaw(sv) |
367 | sthaw(sv) |
280 | SV * sv |
368 | SV * sv |
281 | PROTOTYPE: $ |
369 | PROTOTYPE: $ |
282 | PPCODE: |
370 | PPCODE: |
283 | |
371 | { |
|
|
372 | STRLEN svlen; |
284 | int deref = 0; |
373 | int deref = 0; |
285 | |
374 | |
286 | SvGETMAGIC (sv); |
375 | SvGETMAGIC (sv); |
287 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
376 | if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
288 | { |
377 | { |
|
|
378 | redo: |
|
|
379 | |
289 | switch (SvPVX (sv)[0]) |
380 | switch (SvPVX (sv)[0]) |
290 | { |
381 | { |
291 | case MAGIC_undef: |
382 | case MAGIC_undef: |
|
|
383 | if (svlen <= 1) |
292 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
384 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
|
|
385 | else |
|
|
386 | { |
|
|
387 | if (SvPVX (sv)[1] == MAGIC_R_deref) |
|
|
388 | deref = 1; |
|
|
389 | else if (SvPVX (sv)[1] != MAGIC_R) |
|
|
390 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
|
|
391 | |
|
|
392 | sv_chop (sv, SvPVX (sv) + 2); |
|
|
393 | |
|
|
394 | if (!storable_mstore) |
|
|
395 | { |
|
|
396 | PUTBACK; |
|
|
397 | need_storable (); |
|
|
398 | SPAGAIN; |
|
|
399 | } |
|
|
400 | |
|
|
401 | PUSHMARK (SP); |
|
|
402 | XPUSHs (sv); |
|
|
403 | PUTBACK; |
|
|
404 | |
|
|
405 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
|
|
406 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
|
|
407 | |
|
|
408 | SPAGAIN; |
|
|
409 | |
|
|
410 | if (deref) |
|
|
411 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
|
|
412 | else |
|
|
413 | SETs (sv_2mortal (newSVsv (TOPs))); |
|
|
414 | } |
293 | break; |
415 | break; |
294 | |
416 | |
295 | case MAGIC_U: |
417 | case MAGIC_U: |
296 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
418 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
297 | break; |
419 | break; |
… | |
… | |
310 | case MAGIC_CR: |
432 | case MAGIC_CR: |
311 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
433 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
312 | if (deref) |
434 | if (deref) |
313 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
435 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
314 | SvPVX (sv)[0] = MAGIC_R; |
436 | SvPVX (sv)[0] = MAGIC_R; |
315 | else |
437 | |
316 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
438 | goto redo; |
317 | |
439 | |
318 | case MAGIC_R: |
440 | case MAGIC_R: |
319 | handle_MAGIC_R: |
441 | handle_MAGIC_R: |
320 | if (!storable_mstore) |
442 | if (!storable_mstore) |
|
|
443 | { |
|
|
444 | PUTBACK; |
321 | need_storable (); |
445 | need_storable (); |
|
|
446 | SPAGAIN; |
|
|
447 | } |
322 | |
448 | |
323 | PUSHMARK (SP); |
449 | PUSHMARK (SP); |
324 | XPUSHs (sv); |
450 | XPUSHs (sv); |
325 | PUTBACK; |
451 | PUTBACK; |
326 | |
452 | |
327 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
453 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
328 | croak ("Storable::mstore didn't return a single scalar"); |
454 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
329 | |
455 | |
330 | SPAGAIN; |
456 | SPAGAIN; |
331 | |
457 | |
332 | if (deref) |
458 | if (deref) |
333 | { |
459 | { |
… | |
… | |
335 | |
461 | |
336 | if (SvPVX (sv)[0] == MAGIC_R) |
462 | if (SvPVX (sv)[0] == MAGIC_R) |
337 | SvPVX (sv)[0] = MAGIC_R_deref; |
463 | SvPVX (sv)[0] = MAGIC_R_deref; |
338 | } |
464 | } |
339 | else |
465 | else |
340 | XPUSHs (POPs); /* this is a nop, hopefully */ |
466 | SETs (sv_2mortal (newSVsv (TOPs))); |
341 | |
467 | |
342 | break; |
468 | break; |
343 | |
469 | |
344 | default: |
470 | default: |
345 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
471 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
346 | } |
472 | } |
347 | } |
473 | } |
348 | else |
474 | else |
349 | XPUSHs (sv_2mortal (newSVsv (sv))); |
475 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
476 | } |
|
|
477 | |