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 */ |
24 | #define MAGIC_undef 2 /* the special value undef */ |
18 | #define MAGIC_undef 2 /* the special value undef */ |
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) */ |
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21 | #define MAGIC_CR_deref 5 /* storable (NO reference, freeze), compressed */ |
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22 | #define MAGIC_R_deref 6 /* storable (NO reference, freeze) */ |
27 | #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 */ |
28 | |
25 | |
29 | #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)) |
30 | |
27 | |
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28 | static SV *serializer_package, *serializer_mstore, *serializer_mretrieve; |
31 | static CV *storable_mstore, *storable_mretrieve; |
29 | static CV *storable_mstore, *storable_mretrieve; |
32 | |
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 | |
33 | static SV * |
37 | static SV * |
34 | compress_sv (SV *data, char cprepend, char uprepend) |
38 | compress_sv (SV *data, char cprepend, int uprepend, int best) |
35 | { |
39 | { |
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40 | void *state; |
36 | STRLEN usize, csize; |
41 | STRLEN usize, csize; |
37 | char *src = (char *)SvPV (data, usize); |
42 | char *src = (char *)SvPVbyte (data, usize); |
38 | |
43 | |
39 | if (usize) |
44 | if (usize) |
40 | { |
45 | { |
41 | SV *ret = NEWSV (0, usize + 1); |
46 | SV *ret = NEWSV (0, usize + 1); |
42 | unsigned char *dst; |
47 | unsigned char *dst; |
… | |
… | |
46 | dst = (unsigned char *)SvPVX (ret); |
51 | dst = (unsigned char *)SvPVX (ret); |
47 | |
52 | |
48 | if (cprepend) |
53 | if (cprepend) |
49 | dst[skip++] = cprepend; |
54 | dst[skip++] = cprepend; |
50 | |
55 | |
51 | if (usize < 0x80) |
56 | if (usize <= 0x7f) |
52 | { |
57 | { |
53 | dst[skip++] = usize; |
58 | dst[skip++] = usize; |
54 | } |
59 | } |
55 | else if (usize < 0x800) |
60 | else if (usize <= 0x7ff) |
56 | { |
61 | { |
57 | dst[skip++] = (( usize >> 6) | 0xc0); |
62 | dst[skip++] = (( usize >> 6) | 0xc0); |
58 | dst[skip++] = (( usize & 0x3f) | 0x80); |
63 | dst[skip++] = (( usize & 0x3f) | 0x80); |
59 | } |
64 | } |
60 | else if (usize < 0x10000) |
65 | else if (usize <= 0xffff) |
61 | { |
66 | { |
62 | dst[skip++] = (( usize >> 12) | 0xe0); |
67 | dst[skip++] = (( usize >> 12) | 0xe0); |
63 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
68 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
64 | dst[skip++] = (( usize & 0x3f) | 0x80); |
69 | dst[skip++] = (( usize & 0x3f) | 0x80); |
65 | } |
70 | } |
66 | else if (usize < 0x200000) |
71 | else if (usize <= 0x1fffff) |
67 | { |
72 | { |
68 | dst[skip++] = (( usize >> 18) | 0xf0); |
73 | dst[skip++] = (( usize >> 18) | 0xf0); |
69 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
74 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
70 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
75 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
71 | dst[skip++] = (( usize & 0x3f) | 0x80); |
76 | dst[skip++] = (( usize & 0x3f) | 0x80); |
72 | } |
77 | } |
73 | else if (usize < 0x4000000) |
78 | else if (usize <= 0x3ffffff) |
74 | { |
79 | { |
75 | dst[skip++] = (( usize >> 24) | 0xf8); |
80 | dst[skip++] = (( usize >> 24) | 0xf8); |
76 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
81 | dst[skip++] = (((usize >> 18) & 0x3f) | 0x80); |
77 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
82 | dst[skip++] = (((usize >> 12) & 0x3f) | 0x80); |
78 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
83 | dst[skip++] = (((usize >> 6) & 0x3f) | 0x80); |
79 | dst[skip++] = (( usize & 0x3f) | 0x80); |
84 | dst[skip++] = (( usize & 0x3f) | 0x80); |
80 | } |
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 | } |
81 | else |
95 | else |
82 | 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 | } |
83 | |
106 | |
84 | /* 11 bytes is the smallest compressible string */ |
107 | /* 11 bytes is the smallest compressible string */ |
85 | csize = usize < 11 ? 0 : |
108 | csize = usize < 11 ? 0 : |
86 | lzf_compress (src, usize, |
109 | (best ? lzf_compress_best (src, usize, dst + skip, usize - skip, *(LZF_STATE_BEST *)state) |
87 | dst + skip, |
110 | : lzf_compress (src, usize, dst + skip, usize - skip, *(LZF_STATE *)state)); |
88 | 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 (); |
89 | |
115 | |
90 | if (csize) |
116 | if (csize) |
91 | { |
117 | { |
92 | SvCUR_set (ret, csize + skip); |
118 | SvCUR_set (ret, csize + skip); |
93 | } |
119 | } |
94 | else if (!uprepend) |
120 | else if (uprepend < 0) |
95 | { |
121 | { |
96 | SvREFCNT_dec (ret); |
122 | SvREFCNT_dec (ret); |
97 | ret = SvREFCNT_inc (data); |
123 | ret = SvREFCNT_inc (data); |
98 | } |
124 | } |
99 | else |
125 | else |
100 | { |
126 | { |
101 | *dst++ = 0; |
127 | *dst++ = uprepend; |
102 | |
128 | |
103 | Move ((void *)src, (void *)dst, usize, unsigned char); |
129 | Move ((void *)src, (void *)dst, usize, unsigned char); |
104 | |
130 | |
105 | SvCUR_set (ret, usize + 1); |
131 | SvCUR_set (ret, usize + 1); |
106 | } |
132 | } |
… | |
… | |
113 | |
139 | |
114 | static SV * |
140 | static SV * |
115 | decompress_sv (SV *data, int skip) |
141 | decompress_sv (SV *data, int skip) |
116 | { |
142 | { |
117 | STRLEN usize, csize; |
143 | STRLEN usize, csize; |
118 | unsigned char *src = (unsigned char *)SvPV (data, csize) + skip; |
144 | unsigned char *src = (unsigned char *)SvPVbyte (data, csize) + skip; |
119 | |
145 | |
120 | if (csize) |
146 | if (csize) |
121 | { |
147 | { |
122 | void *dst; |
148 | void *dst; |
123 | SV *ret; |
149 | SV *ret; |
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150 | int res; |
124 | |
151 | |
125 | csize -= skip; |
152 | csize -= skip; |
126 | |
153 | |
127 | if (src[0]) |
154 | if (src[0]) |
128 | { |
155 | { |
129 | if (!(src[0] & 0x80)) |
156 | if (!(src[0] & 0x80) && csize >= 1) |
130 | { |
157 | { |
131 | csize -= 1; |
158 | csize -= 1; |
132 | usize = *src++ & 0xff; |
159 | usize = *src++ & 0xff; |
133 | } |
160 | } |
134 | else if (!(src[0] & 0x20)) |
161 | else if (!(src[0] & 0x20) && csize >= 2) |
135 | { |
162 | { |
136 | csize -= 2; |
163 | csize -= 2; |
137 | usize = *src++ & 0x1f; |
164 | usize = *src++ & 0x1f; |
138 | usize = (usize << 6) | (*src++ & 0x3f); |
165 | usize = (usize << 6) | (*src++ & 0x3f); |
139 | } |
166 | } |
140 | else if (!(src[0] & 0x10)) |
167 | else if (!(src[0] & 0x10) && csize >= 3) |
141 | { |
168 | { |
142 | csize -= 3; |
169 | csize -= 3; |
143 | usize = *src++ & 0x0f; |
170 | usize = *src++ & 0x0f; |
144 | usize = (usize << 6) | (*src++ & 0x3f); |
171 | usize = (usize << 6) | (*src++ & 0x3f); |
145 | usize = (usize << 6) | (*src++ & 0x3f); |
172 | usize = (usize << 6) | (*src++ & 0x3f); |
146 | } |
173 | } |
147 | else if (!(src[0] & 0x08)) |
174 | else if (!(src[0] & 0x08) && csize >= 4) |
148 | { |
175 | { |
149 | csize -= 4; |
176 | csize -= 4; |
150 | usize = *src++ & 0x07; |
177 | usize = *src++ & 0x07; |
151 | usize = (usize << 6) | (*src++ & 0x3f); |
178 | usize = (usize << 6) | (*src++ & 0x3f); |
152 | usize = (usize << 6) | (*src++ & 0x3f); |
179 | usize = (usize << 6) | (*src++ & 0x3f); |
153 | usize = (usize << 6) | (*src++ & 0x3f); |
180 | usize = (usize << 6) | (*src++ & 0x3f); |
154 | } |
181 | } |
155 | else if (!(src[0] & 0x04)) |
182 | else if (!(src[0] & 0x04) && csize >= 5) |
156 | { |
183 | { |
157 | csize -= 5; |
184 | csize -= 5; |
158 | usize = *src++ & 0x03; |
185 | usize = *src++ & 0x03; |
159 | usize = (usize << 6) | (*src++ & 0x3f); |
186 | usize = (usize << 6) | (*src++ & 0x3f); |
160 | usize = (usize << 6) | (*src++ & 0x3f); |
187 | usize = (usize << 6) | (*src++ & 0x3f); |
161 | usize = (usize << 6) | (*src++ & 0x3f); |
188 | usize = (usize << 6) | (*src++ & 0x3f); |
162 | usize = (usize << 6) | (*src++ & 0x3f); |
189 | usize = (usize << 6) | (*src++ & 0x3f); |
163 | } |
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 | } |
164 | else |
201 | else |
165 | croak ("compressed data corrupted"); |
202 | croak ("compressed data corrupted (invalid length)"); |
166 | |
203 | |
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204 | if (!usize) |
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205 | croak ("compressed data corrupted (invalid length)"); |
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206 | |
167 | ret = NEWSV (0, usize); |
207 | ret = NEWSV (0, usize); |
168 | SvPOK_only (ret); |
208 | SvPOK_only (ret); |
169 | dst = SvPVX (ret); |
209 | dst = SvPVX (ret); |
170 | |
210 | |
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211 | if (usize > 4000) perlinterp_release (); |
171 | 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); |
172 | croak ("compressed data corrupted", csize, skip, usize); |
218 | croak ("compressed data corrupted (size mismatch)", csize, skip, usize); |
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219 | } |
173 | } |
220 | } |
174 | else |
221 | else |
175 | { |
222 | { |
176 | usize = csize - 1; |
223 | usize = csize - 1; |
177 | ret = NEWSV (0, usize); |
224 | ret = NEWSV (0, usize | 1); |
178 | SvPOK_only (ret); |
225 | SvPOK_only (ret); |
179 | |
226 | |
180 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
227 | Move ((void *)(src + 1), (void *)SvPVX (ret), usize, unsigned char); |
181 | } |
228 | } |
182 | |
229 | |
… | |
… | |
187 | else |
234 | else |
188 | return newSVpvn ("", 0); |
235 | return newSVpvn ("", 0); |
189 | } |
236 | } |
190 | |
237 | |
191 | static void |
238 | static void |
192 | need_storable(void) |
239 | need_storable (void) |
193 | { |
240 | { |
194 | #if PATCHLEVEL < 6 |
241 | eval_sv (sv_2mortal (newSVpvf ("require %s", SvPVbyte_nolen (serializer_package))), G_VOID | G_DISCARD); |
195 | perl_eval_pv ("require Storable;", 1); |
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196 | #else |
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197 | load_module (PERL_LOADMOD_NOIMPORT, newSVpv ("Storable", 0), Nullsv); |
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198 | #endif |
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199 | |
242 | |
200 | storable_mstore = GvCV (gv_fetchpv ("Storable::mstore" , TRUE, SVt_PVCV)); |
243 | storable_mstore = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mstore ), TRUE, SVt_PVCV))); |
201 | storable_mretrieve = GvCV (gv_fetchpv ("Storable::mretrieve", TRUE, SVt_PVCV)); |
244 | storable_mretrieve = (CV *)SvREFCNT_inc (GvCV (gv_fetchpv (SvPVbyte_nolen (serializer_mretrieve), TRUE, SVt_PVCV))); |
202 | } |
245 | } |
203 | |
246 | |
204 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
247 | MODULE = Compress::LZF PACKAGE = Compress::LZF |
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248 | |
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249 | BOOT: |
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250 | serializer_package = newSVpv ("Storable", 0); |
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251 | serializer_mstore = newSVpv ("Storable::net_mstore", 0); |
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252 | serializer_mretrieve = newSVpv ("Storable::mretrieve", 0); |
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253 | |
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254 | void |
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255 | set_serializer(package, mstore, mretrieve) |
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256 | SV * package |
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257 | SV * mstore |
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258 | SV * mretrieve |
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259 | PROTOTYPE: $$$ |
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260 | PPCODE: |
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261 | SvSetSV (serializer_package , package ); |
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262 | SvSetSV (serializer_mstore , mstore ); |
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263 | SvSetSV (serializer_mretrieve, mretrieve); |
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264 | SvREFCNT_dec (storable_mstore ); storable_mstore = 0; |
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265 | SvREFCNT_dec (storable_mretrieve); storable_mretrieve = 0; |
205 | |
266 | |
206 | void |
267 | void |
207 | compress(data) |
268 | compress(data) |
208 | SV * data |
269 | SV * data |
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270 | ALIAS: |
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271 | compress_best = 1 |
209 | PROTOTYPE: $ |
272 | PROTOTYPE: $ |
210 | PPCODE: |
273 | PPCODE: |
211 | XPUSHs (sv_2mortal (compress_sv (data, 0, 1))); |
274 | XPUSHs (sv_2mortal (compress_sv (data, 0, MAGIC_U, ix))); |
212 | |
275 | |
213 | void |
276 | void |
214 | decompress(data) |
277 | decompress(data) |
215 | SV * data |
278 | SV * data |
216 | PROTOTYPE: $ |
279 | PROTOTYPE: $ |
… | |
… | |
219 | |
282 | |
220 | void |
283 | void |
221 | sfreeze(sv) |
284 | sfreeze(sv) |
222 | SV * sv |
285 | SV * sv |
223 | ALIAS: |
286 | ALIAS: |
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287 | sfreeze = 0 |
224 | sfreeze_cr = 1 |
288 | sfreeze_cr = 1 |
225 | 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 |
226 | PROTOTYPE: $ |
293 | PROTOTYPE: $ |
227 | PPCODE: |
294 | PPCODE: |
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295 | { |
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296 | int best = ix & 4; |
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297 | ix &= 3; |
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298 | |
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299 | SvGETMAGIC (sv); |
228 | |
300 | |
229 | if (!SvOK (sv)) |
301 | if (!SvOK (sv)) |
230 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
302 | XPUSHs (sv_2mortal (newSVpvn ("\02", 1))); /* 02 == MAGIC_undef */ |
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303 | else if (SvROK (sv) |
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304 | || SvUTF8 (sv) |
231 | else if (SvTYPE(sv) != SVt_IV |
305 | || (SvTYPE(sv) != SVt_IV |
232 | && SvTYPE(sv) != SVt_NV |
306 | && SvTYPE(sv) != SVt_NV |
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307 | && SvTYPE(sv) != SVt_PV |
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308 | && SvTYPE(sv) != SVt_PVIV |
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309 | && SvTYPE(sv) != SVt_PVNV |
233 | && SvTYPE(sv) != SVt_PV) /* mstore */ |
310 | && SvTYPE(sv) != SVt_PVMG)) /* mstore */ |
234 | { |
311 | { |
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312 | int deref = !SvROK (sv); |
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313 | char *pv; |
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314 | |
235 | if (!storable_mstore) |
315 | if (!storable_mstore) |
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316 | { |
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317 | PUTBACK; |
236 | need_storable (); |
318 | need_storable (); |
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319 | SPAGAIN; |
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320 | } |
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321 | |
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322 | if (deref) |
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323 | sv = newRV_noinc (sv); |
237 | |
324 | |
238 | PUSHMARK (SP); |
325 | PUSHMARK (SP); |
239 | XPUSHs (sv); |
326 | XPUSHs (sv); |
240 | PUTBACK; |
327 | PUTBACK; |
241 | |
328 | |
242 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
329 | if (1 != call_sv ((SV *)storable_mstore, G_SCALAR)) |
243 | croak ("Storable::mstore didn't return a single scalar"); |
330 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mstore)); |
244 | |
331 | |
245 | SPAGAIN; |
332 | SPAGAIN; |
246 | |
333 | |
247 | sv = POPs; |
334 | sv = POPs; |
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335 | pv = SvPV_nolen (sv); |
248 | |
336 | |
249 | if (SvPVX (sv)[0] != MAGIC_R) |
337 | if (*pv == MAGIC_R) |
250 | croak ("Storable format changed, need newer version of Compress::LZF"); |
338 | { |
|
|
339 | if (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; |
|
|
348 | |
|
|
349 | sv_insert (sv, 0, 0, pfx, 2); |
|
|
350 | } |
251 | |
351 | |
252 | if (ix) /* compress */ |
352 | if (ix) /* compress */ |
253 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_CR, 0))); |
353 | sv = sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, -1, best)); |
254 | else |
354 | |
255 | XPUSHs (sv); |
355 | XPUSHs (sv); |
256 | } |
356 | } |
257 | else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
357 | else if (SvPOKp (sv) && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI)) |
258 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 1))); /* need to prefix only */ |
358 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U, best))); /* need to prefix only */ |
259 | else if (ix == 2) /* compress always */ |
359 | else if (ix == 2) /* compress always */ |
260 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 0))); |
360 | XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1, best))); |
|
|
361 | else if (SvNIOK (sv)) /* don't compress */ |
|
|
362 | { |
|
|
363 | STRLEN len; |
|
|
364 | char *s = SvPV (sv, len); |
|
|
365 | XPUSHs (sv_2mortal (newSVpvn (s, len))); |
|
|
366 | } |
261 | else /* don't compress */ |
367 | else /* don't compress */ |
262 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
368 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
369 | } |
263 | |
370 | |
264 | void |
371 | void |
265 | sthaw(sv) |
372 | sthaw(sv) |
266 | SV * sv |
373 | SV * sv |
267 | PROTOTYPE: $ |
374 | PROTOTYPE: $ |
268 | PPCODE: |
375 | PPCODE: |
|
|
376 | { |
|
|
377 | STRLEN svlen; |
|
|
378 | int deref = 0; |
269 | |
379 | |
|
|
380 | SvGETMAGIC (sv); |
270 | 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)) |
271 | { |
382 | { |
|
|
383 | redo: |
|
|
384 | |
272 | switch (SvPVX (sv)[0]) |
385 | switch (SvPVX (sv)[0]) |
273 | { |
386 | { |
274 | case MAGIC_undef: |
387 | case MAGIC_undef: |
|
|
388 | if (svlen <= 1) |
275 | 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 | } |
276 | break; |
420 | break; |
277 | |
421 | |
278 | case MAGIC_U: |
422 | case MAGIC_U: |
279 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
423 | XPUSHs (sv_2mortal (decompress_sv (sv, 0))); |
280 | break; |
424 | break; |
281 | |
425 | |
282 | case MAGIC_C: |
426 | case MAGIC_C: |
283 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
427 | XPUSHs (sv_2mortal (decompress_sv (sv, 1))); |
284 | break; |
428 | break; |
285 | |
429 | |
|
|
430 | case MAGIC_R_deref: |
|
|
431 | deref = 1; |
|
|
432 | SvPVX (sv)[0] = MAGIC_R; |
|
|
433 | goto handle_MAGIC_R; |
|
|
434 | |
|
|
435 | case MAGIC_CR_deref: |
|
|
436 | deref = 1; |
286 | case MAGIC_CR: |
437 | case MAGIC_CR: |
287 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
438 | sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */ |
|
|
439 | if (deref) |
|
|
440 | if (SvPVX (sv)[0] == MAGIC_R_deref) |
|
|
441 | SvPVX (sv)[0] = MAGIC_R; |
|
|
442 | |
|
|
443 | goto redo; |
|
|
444 | |
288 | case MAGIC_R: |
445 | case MAGIC_R: |
|
|
446 | handle_MAGIC_R: |
289 | if (!storable_mstore) |
447 | if (!storable_mstore) |
|
|
448 | { |
|
|
449 | PUTBACK; |
290 | need_storable (); |
450 | need_storable (); |
|
|
451 | SPAGAIN; |
|
|
452 | } |
291 | |
453 | |
292 | PUSHMARK (SP); |
454 | PUSHMARK (SP); |
293 | XPUSHs (sv); |
455 | XPUSHs (sv); |
294 | PUTBACK; |
456 | PUTBACK; |
295 | |
457 | |
296 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
458 | if (1 != call_sv ((SV *)storable_mretrieve, G_SCALAR)) |
297 | croak ("Storable::mstore didn't return a single scalar"); |
459 | croak ("%s didn't return a single scalar", SvPVbyte_nolen (serializer_mretrieve)); |
298 | |
460 | |
299 | SPAGAIN; |
461 | SPAGAIN; |
300 | |
462 | |
301 | /*XPUSHs (POPs); this is a nop, hopefully */ |
463 | if (deref) |
|
|
464 | { |
|
|
465 | SETs (sv_2mortal (SvREFCNT_inc (SvRV (TOPs)))); |
302 | |
466 | |
|
|
467 | if (SvPVX (sv)[0] == MAGIC_R) |
|
|
468 | SvPVX (sv)[0] = MAGIC_R_deref; |
|
|
469 | } |
|
|
470 | else |
|
|
471 | SETs (sv_2mortal (newSVsv (TOPs))); |
|
|
472 | |
303 | break; |
473 | break; |
304 | |
474 | |
305 | default: |
475 | default: |
306 | 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?"); |
307 | } |
477 | } |
308 | } |
478 | } |
309 | else |
479 | else |
310 | XPUSHs (sv_2mortal (SvREFCNT_inc (sv))); |
480 | XPUSHs (sv_2mortal (newSVsv (sv))); |
|
|
481 | } |
|
|
482 | |