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 | |
33 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
28 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
34 | static CV *storable_mstore, *storable_mretrieve; |
29 | static CV *storable_mstore, *storable_mretrieve; |
35 | |
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 | |
36 | static SV * |
37 | static SV * |
37 | compress_sv (SV *data, char cprepend, int uprepend) |
38 | compress_sv (SV *data, char cprepend, int uprepend, int best) |
38 | { |
39 | { |
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40 | void *state; |
39 | STRLEN usize, csize; |
41 | STRLEN usize, csize; |
40 | char *src = (char *)SvPV (data, usize); |
42 | char *src = (char *)SvPVbyte (data, usize); |
41 | |
43 | |
42 | if (usize) |
44 | if (usize) |
43 | { |
45 | { |
44 | SV *ret = NEWSV (0, usize + 1); |
46 | SV *ret = NEWSV (0, usize + 1); |
45 | unsigned char *dst; |
47 | unsigned char *dst; |
… | |
… | |
49 | dst = (unsigned char *)SvPVX (ret); |
51 | dst = (unsigned char *)SvPVX (ret); |
50 | |
52 | |
51 | if (cprepend) |
53 | if (cprepend) |
52 | dst[skip++] = cprepend; |
54 | dst[skip++] = cprepend; |
53 | |
55 | |
54 | if (usize < 0x80) |
56 | if (usize <= 0x7f) |
55 | { |
57 | { |
56 | dst[skip++] = usize; |
58 | dst[skip++] = usize; |
57 | } |
59 | } |
58 | else if (usize < 0x800) |
60 | else if (usize <= 0x7ff) |
59 | { |
61 | { |
60 | dst[skip++] = (( usize >> 6) | 0xc0); |
62 | dst[skip++] = (( usize >> 6) | 0xc0); |
61 | dst[skip++] = (( usize & 0x3f) | 0x80); |
63 | dst[skip++] = (( usize & 0x3f) | 0x80); |
62 | } |
64 | } |
63 | else if (usize < 0x10000) |
65 | else if (usize <= 0xffff) |
64 | { |
66 | { |
65 | dst[skip++] = (( usize >> 12) | 0xe0); |
67 | dst[skip++] = (( usize >> 12) | 0xe0); |
66 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
68 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
67 | dst[skip++] = (( usize & 0x3f) | 0x80); |
69 | dst[skip++] = (( usize & 0x3f) | 0x80); |
68 | } |
70 | } |
69 | else if (usize < 0x200000) |
71 | else if (usize <= 0x1fffff) |
70 | { |
72 | { |
71 | dst[skip++] = (( usize >> 18) | 0xf0); |
73 | dst[skip++] = (( usize >> 18) | 0xf0); |
72 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
74 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
73 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
75 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
74 | dst[skip++] = (( usize & 0x3f) | 0x80); |
76 | dst[skip++] = (( usize & 0x3f) | 0x80); |
75 | } |
77 | } |
76 | else if (usize < 0x4000000) |
78 | else if (usize <= 0x3ffffff) |
77 | { |
79 | { |
78 | dst[skip++] = (( usize >> 24) | 0xf8); |
80 | dst[skip++] = (( usize >> 24) | 0xf8); |
79 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
81 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
80 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
82 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
81 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
83 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
82 | dst[skip++] = (( usize & 0x3f) | 0x80); |
84 | dst[skip++] = (( usize & 0x3f) | 0x80); |
83 | } |
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 | } |
84 | else |
95 | else |
85 | croak ("compress can only compress up to %ld bytes", 0x4000000-1); |
96 | croak ("compress can only compress up to %ld bytes", 0x7fffffffL); |
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97 | |
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98 | if (usize > 2000) perlinterp_release (); |
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99 | |
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100 | state = malloc (best ? sizeof (LZF_STATE_BEST) : sizeof (LZF_STATE)); |
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101 | if (!state) |
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102 | { |
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103 | if (usize > 2000) perlinterp_acquire (); |
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104 | croak ("Compress::LZF unable to allocate memory for compression state"); |
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105 | } |
86 | |
106 | |
87 | /* 11 bytes is the smallest compressible string */ |
107 | /* 11 bytes is the smallest compressible string */ |
88 | csize = usize < 11 ? 0 : |
108 | csize = usize < 11 ? 0 : |
89 | lzf_compress (src, usize, |
109 | (best ? lzf_compress_best (src, usize, dst + skip, usize - skip, *(LZF_STATE_BEST *)state) |
90 | dst + skip, |
110 | : lzf_compress (src, usize, dst + skip, usize - skip, *(LZF_STATE *)state)); |
91 | usize - skip); |
111 | |
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112 | free (state); |
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113 | |
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114 | if (usize > 2000) perlinterp_acquire (); |
92 | |
115 | |
93 | if (csize) |
116 | if (csize) |
94 | { |
117 | { |
95 | SvCUR_set (ret, csize + skip); |
118 | SvCUR_set (ret, csize + skip); |
96 | } |
119 | } |
… | |
… | |
116 | |
139 | |
117 | static SV * |
140 | static SV * |
118 | decompress_sv (SV *data, int skip) |
141 | decompress_sv (SV *data, int skip) |
119 | { |
142 | { |
120 | STRLEN usize, csize; |
143 | STRLEN usize, csize; |
121 | unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; |
144 | unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip; |
122 | |
145 | |
123 | if (csize) |
146 | if (csize) |
124 | { |
147 | { |
125 | void *dst; |
148 | void *dst; |
126 | SV *ret; |
149 | SV *ret; |
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150 | int res; |
127 | |
151 | |
128 | csize -= skip; |
152 | csize -= skip; |
129 | |
153 | |
130 | if (src[0]) |
154 | if (src[0]) |
131 | { |
155 | { |
132 | if (!(src[0] & 0x80)) |
156 | if (!(src[0] & 0x80) && csize >= 1) |
133 | { |
157 | { |
134 | csize -= 1; |
158 | csize -= 1; |
135 | usize = *src++ & 0xff; |
159 | usize = *src++ & 0xff; |
136 | } |
160 | } |
137 | else if (!(src[0] & 0x20)) |
161 | else if (!(src[0] & 0x20) && csize >= 2) |
138 | { |
162 | { |
139 | csize -= 2; |
163 | csize -= 2; |
140 | usize = *src++ & 0x1f; |
164 | usize = *src++ & 0x1f; |
141 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | usize = (usize << 6) | (*src++ & 0x3f); |
142 | } |
166 | } |
143 | else if (!(src[0] & 0x10)) |
167 | else if (!(src[0] & 0x10) && csize >= 3) |
144 | { |
168 | { |
145 | csize -= 3; |
169 | csize -= 3; |
146 | usize = *src++ & 0x0f; |
170 | usize = *src++ & 0x0f; |
147 | usize = (usize << 6) | (*src++ & 0x3f); |
171 | usize = (usize << 6) | (*src++ & 0x3f); |
148 | usize = (usize << 6) | (*src++ & 0x3f); |
172 | usize = (usize << 6) | (*src++ & 0x3f); |
149 | } |
173 | } |
150 | else if (!(src[0] & 0x08)) |
174 | else if (!(src[0] & 0x08) && csize >= 4) |
151 | { |
175 | { |
152 | csize -= 4; |
176 | csize -= 4; |
153 | usize = *src++ & 0x07; |
177 | usize = *src++ & 0x07; |
154 | usize = (usize << 6) | (*src++ & 0x3f); |
178 | usize = (usize << 6) | (*src++ & 0x3f); |
155 | usize = (usize << 6) | (*src++ & 0x3f); |
179 | usize = (usize << 6) | (*src++ & 0x3f); |
156 | usize = (usize << 6) | (*src++ & 0x3f); |
180 | usize = (usize << 6) | (*src++ & 0x3f); |
157 | } |
181 | } |
158 | else if (!(src[0] & 0x04)) |
182 | else if (!(src[0] & 0x04) && csize >= 5) |
159 | { |
183 | { |
160 | csize -= 5; |
184 | csize -= 5; |
161 | usize = *src++ & 0x03; |
185 | usize = *src++ & 0x03; |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
186 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | usize = (usize << 6) | (*src++ & 0x3f); |
187 | usize = (usize << 6) | (*src++ & 0x3f); |
164 | usize = (usize << 6) | (*src++ & 0x3f); |
188 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | usize = (usize << 6) | (*src++ & 0x3f); |
189 | usize = (usize << 6) | (*src++ & 0x3f); |
166 | } |
190 | } |
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191 | else if (!(src[0] & 0x02) && csize >= 6) |
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192 | { |
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193 | csize -= 6; |
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194 | usize = *src++ & 0x01; |
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195 | usize = (usize << 6) | (*src++ & 0x3f); |
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196 | usize = (usize << 6) | (*src++ & 0x3f); |
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197 | usize = (usize << 6) | (*src++ & 0x3f); |
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198 | usize = (usize << 6) | (*src++ & 0x3f); |
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199 | usize = (usize << 6) | (*src++ & 0x3f); |
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200 | } |
167 | else |
201 | else |
168 | croak ("compressed data corrupted (invalid length)"); |
202 | croak ("compressed data corrupted (invalid length)"); |
169 | |
203 | |
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204 | if (!usize) |
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205 | croak ("compressed data corrupted (invalid length)"); |
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206 | |
170 | ret = NEWSV (0, usize); |
207 | ret = NEWSV (0, usize); |
171 | SvPOK_only (ret); |
208 | SvPOK_only (ret); |
172 | dst = SvPVX (ret); |
209 | dst = SvPVX (ret); |
173 | |
210 | |
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211 | if (usize > 4000) perlinterp_release (); |
174 | if (lzf_decompress (src, csize, dst, usize) != usize) |
212 | res = lzf_decompress (src, csize, dst, usize) != usize; |
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213 | if (usize > 4000) perlinterp_acquire (); |
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214 | |
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215 | if (res) |
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216 | { |
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217 | SvREFCNT_dec (ret); |
175 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
218 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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219 | } |
176 | } |
220 | } |
177 | else |
221 | else |
178 | { |
222 | { |
179 | usize = csize - 1; |
223 | usize = csize - 1; |
180 | ret = NEWSV (0, usize); |
224 | ret = NEWSV (0, usize | 1); |
181 | SvPOK_only (ret); |
225 | SvPOK_only (ret); |
182 | |
226 | |
183 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
227 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
184 | } |
228 | } |
185 | |
229 | |
… | |
… | |
190 | else |
234 | else |
191 | return newSVpvn ("", 0); |
235 | return newSVpvn ("", 0); |
192 | } |
236 | } |
193 | |
237 | |
194 | static void |
238 | static void |
195 | need_storable(void) |
239 | need_storable (void) |
196 | { |
240 | { |
197 | #if PATCHLEVEL < 6 |
241 | eval_sv (sv_2mortal (newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
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); |
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203 | #endif |
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204 | |
242 | |
205 | storable_mstore = GvCV (gv_fetchpv (SvPV_nolen (serializer_mstore ), TRUE, SVt_PVCV)); |
243 | storable_mstore = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV))); |
206 | storable_mretrieve = GvCV (gv_fetchpv (SvPV_nolen (serializer_mretrieve), TRUE, SVt_PVCV)); |
244 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
207 | } |
245 | } |
208 | |
246 | |
209 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
247 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
210 | |
248 | |
211 | BOOT: |
249 | BOOT: |
212 | serializer_package = newSVpv ("Storable", 0); |
250 | serializer_package = newSVpv ("Storable", 0); |
213 | serializer_mstore = newSVpv ("Storable::mstore", 0); |
251 | serializer_mstore = newSVpv ("Storable::net_mstore", 0); |
214 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
252 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
215 | |
253 | |
216 | void |
254 | void |
217 | set_serializer(package, mstore, mretrieve) |
255 | set_serializer(package, mstore, mretrieve) |
218 | SV * package |
256 | SV * package |
… | |
… | |
221 | PROTOTYPE: $$$ |
259 | PROTOTYPE: $$$ |
222 | PPCODE: |
260 | PPCODE: |
223 | SvSetSV (serializer_package , package ); |
261 | SvSetSV (serializer_package , package ); |
224 | SvSetSV (serializer_mstore , mstore ); |
262 | SvSetSV (serializer_mstore , mstore ); |
225 | SvSetSV (serializer_mretrieve, mretrieve); |
263 | SvSetSV (serializer_mretrieve, mretrieve); |
226 | storable_mstore = |
264 | SvREFCNT_dec (storable_mstore ); storable_mstore = 0; |
227 | storable_mretrieve = 0; |
265 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
228 | |
266 | |
229 | void |
267 | void |
230 | compress(data) |
268 | compress(data) |
231 | SV * data |
269 | SV * data |
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270 | ALIAS: |
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271 | compress_best = 1 |
232 | PROTOTYPE: $ |
272 | PROTOTYPE: $ |
233 | PPCODE: |
273 | PPCODE: |
234 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U))); |
274 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U, ix))); |
235 | |
275 | |
236 | void |
276 | void |
237 | decompress(data) |
277 | decompress(data) |
238 | SV * data |
278 | SV * data |
239 | PROTOTYPE: $ |
279 | PROTOTYPE: $ |
… | |
… | |
242 | |
282 | |
243 | void |
283 | void |
244 | sfreeze(sv) |
284 | sfreeze(sv) |
245 | SV * sv |
285 | SV * sv |
246 | ALIAS: |
286 | ALIAS: |
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287 | sfreeze = 0 |
247 | sfreeze_cr = 1 |
288 | sfreeze_cr = 1 |
248 | sfreeze_c = 2 |
289 | sfreeze_c = 2 |
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290 | sfreeze_best = 4 |
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291 | sfreeze_cr_best = 5 |
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292 | sfreeze_c_best = 6 |
249 | PROTOTYPE: $ |
293 | PROTOTYPE: $ |
250 | PPCODE: |
294 | PPCODE: |
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295 | { |
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296 | int best = ix & 4; |
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297 | ix &= 3; |
251 | |
298 | |
252 | SvGETMAGIC (sv); |
299 | SvGETMAGIC (sv); |
253 | |
300 | |
254 | if (!SvOK (sv)) |
301 | if (!SvOK (sv)) |
255 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
302 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
256 | else if (SvROK (sv) |
303 | else if (SvROK (sv) |
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304 | || SvUTF8 (sv) |
257 | || (SvTYPE(sv) != SVt_IV |
305 | || (SvTYPE(sv) != SVt_IV |
258 | && SvTYPE(sv) != SVt_NV |
306 | && SvTYPE(sv) != SVt_NV |
259 | && SvTYPE(sv) != SVt_PV |
307 | && SvTYPE(sv) != SVt_PV |
260 | && SvTYPE(sv) != SVt_PVIV |
308 | && SvTYPE(sv) != SVt_PVIV |
261 | && SvTYPE(sv) != SVt_PVNV |
309 | && SvTYPE(sv) != SVt_PVNV |
262 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
310 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
263 | { |
311 | { |
264 | int deref = !SvROK (sv); |
312 | int deref = !SvROK (sv); |
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313 | char *pv; |
265 | |
314 | |
266 | if (!storable_mstore) |
315 | if (!storable_mstore) |
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316 | { |
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317 | PUTBACK; |
267 | need_storable (); |
318 | need_storable (); |
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319 | SPAGAIN; |
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320 | } |
268 | |
321 | |
269 | if (deref) |
322 | if (deref) |
270 | sv = newRV_noinc (sv); |
323 | sv = newRV_noinc (sv); |
271 | |
324 | |
272 | PUSHMARK (SP); |
325 | PUSHMARK (SP); |
273 | XPUSHs (sv); |
326 | XPUSHs (sv); |
274 | PUTBACK; |
327 | PUTBACK; |
275 | |
328 | |
276 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
329 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
277 | croak ("Storable::mstore didn't return a single scalar"); |
330 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore)); |
278 | |
331 | |
279 | SPAGAIN; |
332 | SPAGAIN; |
280 | |
333 | |
281 | sv = POPs; |
334 | sv = POPs; |
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335 | pv = SvPV_nolen (sv); |
282 | |
336 | |
283 | if (SvPVX (sv)[0] != MAGIC_R) |
337 | if (*pv == MAGIC_R) |
284 | croak ("Storable format changed, need newer version of Compress::LZF"); |
338 | { |
285 | |
|
|
286 | if (deref) |
339 | if (deref) |
287 | SvPVX (sv)[0] = MAGIC_R_deref; |
340 | *pv = MAGIC_R_deref; |
|
|
341 | } |
|
|
342 | else |
|
|
343 | { |
|
|
344 | char pfx[2]; |
|
|
345 | |
|
|
346 | pfx[0] = MAGIC_undef; |
|
|
347 | pfx[1] = deref ? MAGIC_R_deref : MAGIC_R; |
|
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348 | |
|
|
349 | sv_insert (sv, 0, 0, pfx, 2); |
|
|
350 | } |
288 | |
351 | |
289 | if (ix) /* compress */ |
352 | if (ix) /* compress */ |
290 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1)); |
353 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1, best)); |
291 | |
354 | |
292 | XPUSHs (sv); |
355 | XPUSHs (sv); |
293 | } |
356 | } |
294 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
357 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
295 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */ |
358 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U, best))); /* need to prefix only */ |
296 | else if (ix == 2) /* compress always */ |
359 | else if (ix == 2) /* compress always */ |
297 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1))); |
360 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1, best))); |
298 | else if (SvNIOK (sv)) /* don't compress */ |
361 | else if (SvNIOK (sv)) /* don't compress */ |
299 | { |
362 | { |
300 | STRLEN len; |
363 | STRLEN len; |
301 | char *s = SvPV (sv, len); |
364 | char *s = SvPV (sv, len); |
302 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
365 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
303 | } |
366 | } |
304 | else /* don't compress */ |
367 | else /* don't compress */ |
305 | XPUSHs (sv_2mortal (newSVsv (sv))); |
368 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
369 | } |
306 | |
370 | |
307 | void |
371 | void |
308 | sthaw(sv) |
372 | sthaw(sv) |
309 | SV * sv |
373 | SV * sv |
310 | PROTOTYPE: $ |
374 | PROTOTYPE: $ |
311 | PPCODE: |
375 | PPCODE: |
312 | |
376 | { |
|
|
377 | STRLEN svlen; |
313 | int deref = 0; |
378 | int deref = 0; |
314 | |
379 | |
315 | SvGETMAGIC (sv); |
380 | SvGETMAGIC (sv); |
316 | if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI)) |
381 | if (SvPOK (sv) && IN_RANGE (SvPVbyte (sv, svlen)[0], MAGIC_LO, MAGIC_HI)) |
317 | { |
382 | { |
|
|
383 | redo: |
|
|
384 | |
318 | switch (SvPVX (sv)[0]) |
385 | switch (SvPVX (sv)[0]) |
319 | { |
386 | { |
320 | case MAGIC_undef: |
387 | case MAGIC_undef: |
|
|
388 | if (svlen <= 1) |
321 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
389 | XPUSHs (sv_2mortal (NEWSV (0, 0))); |
|
|
390 | else |
|
|
391 | { |
|
|
392 | if (SvPVX (sv)[1] == MAGIC_R_deref) |
|
|
393 | deref = 1; |
|
|
394 | else if (SvPVX (sv)[1] != MAGIC_R) |
|
|
395 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
|
|
396 | |
|
|
397 | sv_chop (sv, SvPVX (sv) + 2); |
|
|
398 | |
|
|
399 | if (!storable_mstore) |
|
|
400 | { |
|
|
401 | PUTBACK; |
|
|
402 | need_storable (); |
|
|
403 | SPAGAIN; |
|
|
404 | } |
|
|
405 | |
|
|
406 | PUSHMARK (SP); |
|
|
407 | XPUSHs (sv); |
|
|
408 | PUTBACK; |
|
|
409 | |
|
|
410 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
|
|
411 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
|
|
412 | |
|
|
413 | SPAGAIN; |
|
|
414 | |
|
|
415 | if (deref) |
|
|
416 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
|
|
417 | else |
|
|
418 | SETs (sv_2mortal (newSVsv (TOPs))); |
|
|
419 | } |
322 | break; |
420 | break; |
323 | |
421 | |
324 | case MAGIC_U: |
422 | case MAGIC_U: |
325 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
423 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
326 | break; |
424 | break; |
… | |
… | |
339 | case MAGIC_CR: |
437 | case MAGIC_CR: |
340 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
438 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
341 | if (deref) |
439 | if (deref) |
342 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
440 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
343 | SvPVX (sv)[0] = MAGIC_R; |
441 | SvPVX (sv)[0] = MAGIC_R; |
344 | else |
442 | |
345 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
443 | goto redo; |
346 | |
444 | |
347 | case MAGIC_R: |
445 | case MAGIC_R: |
348 | handle_MAGIC_R: |
446 | handle_MAGIC_R: |
349 | if (!storable_mstore) |
447 | if (!storable_mstore) |
|
|
448 | { |
|
|
449 | PUTBACK; |
350 | need_storable (); |
450 | need_storable (); |
|
|
451 | SPAGAIN; |
|
|
452 | } |
351 | |
453 | |
352 | PUSHMARK (SP); |
454 | PUSHMARK (SP); |
353 | XPUSHs (sv); |
455 | XPUSHs (sv); |
354 | PUTBACK; |
456 | PUTBACK; |
355 | |
457 | |
356 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
458 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
357 | croak ("Storable::mstore didn't return a single scalar"); |
459 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
358 | |
460 | |
359 | SPAGAIN; |
461 | SPAGAIN; |
360 | |
462 | |
361 | if (deref) |
463 | if (deref) |
362 | { |
464 | { |
… | |
… | |
366 | SvPVX (sv)[0] = MAGIC_R_deref; |
468 | SvPVX (sv)[0] = MAGIC_R_deref; |
367 | } |
469 | } |
368 | else |
470 | else |
369 | SETs (sv_2mortal (newSVsv (TOPs))); |
471 | SETs (sv_2mortal (newSVsv (TOPs))); |
370 | |
472 | |
371 | break; |
473 | break; |
372 | |
474 | |
373 | default: |
475 | default: |
374 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
476 | croak ("Compress::LZF::sthaw(): invalid data, maybe you need a newer version of Compress::LZF?"); |
375 | } |
477 | } |
376 | } |
478 | } |
377 | else |
479 | else |
378 | XPUSHs (sv_2mortal (newSVsv (sv))); |
480 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
481 | } |
379 | |
482 | |