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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | |
5 | #include <gdbm.h> |
6 | #include <fcntl.h> |
7 | |
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8 | typedef struct { |
9 | GDBM_FILE dbp ; |
10 | SV * filter_fetch_key ; |
11 | SV * filter_store_key ; |
12 | SV * filter_fetch_value ; |
13 | SV * filter_store_value ; |
14 | int filtering ; |
15 | } GDBM_File_type; |
16 | |
17 | typedef GDBM_File_type * GDBM_File ; |
18 | typedef datum datum_key ; |
19 | typedef datum datum_value ; |
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20 | typedef datum datum_key_copy; |
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21 | |
22 | #define ckFilter(arg,type,name) \ |
23 | if (db->type) { \ |
24 | SV * save_defsv ; \ |
25 | /* printf("filtering %s\n", name) ;*/ \ |
26 | if (db->filtering) \ |
27 | croak("recursion detected in %s", name) ; \ |
28 | db->filtering = TRUE ; \ |
29 | save_defsv = newSVsv(DEFSV) ; \ |
30 | sv_setsv(DEFSV, arg) ; \ |
31 | PUSHMARK(sp) ; \ |
32 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ |
33 | sv_setsv(arg, DEFSV) ; \ |
34 | sv_setsv(DEFSV, save_defsv) ; \ |
35 | SvREFCNT_dec(save_defsv) ; \ |
36 | db->filtering = FALSE ; \ |
37 | /*printf("end of filtering %s\n", name) ;*/ \ |
38 | } |
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39 | |
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40 | |
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41 | |
42 | #define GDBM_BLOCKSIZE 0 /* gdbm defaults to stat blocksize */ |
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43 | |
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44 | typedef void (*FATALFUNC)(); |
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45 | |
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46 | #ifndef GDBM_FAST |
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47 | static int |
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48 | not_here(char *s) |
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49 | { |
50 | croak("GDBM_File::%s not implemented on this architecture", s); |
51 | return -1; |
52 | } |
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53 | #endif |
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54 | |
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55 | /* GDBM allocates the datum with system malloc() and expects the user |
56 | * to free() it. So we either have to free() it immediately, or have |
57 | * perl free() it when it deallocates the SV, depending on whether |
58 | * perl uses malloc()/free() or not. */ |
59 | static void |
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60 | output_datum(pTHX_ SV *arg, char *str, int size) |
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61 | { |
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62 | #if (!defined(MYMALLOC) || (defined(MYMALLOC) && defined(PERL_POLLUTE_MALLOC))) && !defined(LEAKTEST) |
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63 | sv_usepvn(arg, str, size); |
64 | #else |
65 | sv_setpvn(arg, str, size); |
66 | safesysfree(str); |
67 | #endif |
68 | } |
69 | |
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70 | /* Versions of gdbm prior to 1.7x might not have the gdbm_sync, |
71 | gdbm_exists, and gdbm_setopt functions. Apparently Slackware |
72 | (Linux) 2.1 contains gdbm-1.5 (which dates back to 1991). |
73 | */ |
74 | #ifndef GDBM_FAST |
75 | #define gdbm_exists(db,key) not_here("gdbm_exists") |
76 | #define gdbm_sync(db) (void) not_here("gdbm_sync") |
77 | #define gdbm_setopt(db,optflag,optval,optlen) not_here("gdbm_setopt") |
78 | #endif |
79 | |
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80 | #include "const-c.inc" |
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81 | |
82 | MODULE = GDBM_File PACKAGE = GDBM_File PREFIX = gdbm_ |
83 | |
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84 | INCLUDE: const-xs.inc |
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85 | |
86 | GDBM_File |
87 | gdbm_TIEHASH(dbtype, name, read_write, mode, fatal_func = (FATALFUNC)croak) |
88 | char * dbtype |
89 | char * name |
90 | int read_write |
91 | int mode |
92 | FATALFUNC fatal_func |
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93 | CODE: |
94 | { |
95 | GDBM_FILE dbp ; |
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96 | |
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97 | RETVAL = NULL ; |
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98 | if ((dbp = gdbm_open(name, GDBM_BLOCKSIZE, read_write, mode, fatal_func))) { |
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99 | RETVAL = (GDBM_File)safemalloc(sizeof(GDBM_File_type)) ; |
100 | Zero(RETVAL, 1, GDBM_File_type) ; |
101 | RETVAL->dbp = dbp ; |
102 | } |
103 | |
104 | } |
105 | OUTPUT: |
106 | RETVAL |
107 | |
108 | |
109 | #define gdbm_close(db) gdbm_close(db->dbp) |
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110 | void |
111 | gdbm_close(db) |
112 | GDBM_File db |
113 | CLEANUP: |
114 | |
115 | void |
116 | gdbm_DESTROY(db) |
117 | GDBM_File db |
118 | CODE: |
119 | gdbm_close(db); |
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120 | safefree(db); |
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121 | |
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122 | #define gdbm_FETCH(db,key) gdbm_fetch(db->dbp,key) |
123 | datum_value |
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124 | gdbm_FETCH(db, key) |
125 | GDBM_File db |
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126 | datum_key_copy key |
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127 | |
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128 | #define gdbm_STORE(db,key,value,flags) gdbm_store(db->dbp,key,value,flags) |
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129 | int |
130 | gdbm_STORE(db, key, value, flags = GDBM_REPLACE) |
131 | GDBM_File db |
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132 | datum_key key |
133 | datum_value value |
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134 | int flags |
135 | CLEANUP: |
136 | if (RETVAL) { |
137 | if (RETVAL < 0 && errno == EPERM) |
138 | croak("No write permission to gdbm file"); |
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139 | croak("gdbm store returned %d, errno %d, key \"%.*s\"", |
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140 | RETVAL,errno,key.dsize,key.dptr); |
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141 | } |
142 | |
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143 | #define gdbm_DELETE(db,key) gdbm_delete(db->dbp,key) |
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144 | int |
145 | gdbm_DELETE(db, key) |
146 | GDBM_File db |
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147 | datum_key key |
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148 | |
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149 | #define gdbm_FIRSTKEY(db) gdbm_firstkey(db->dbp) |
150 | datum_key |
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151 | gdbm_FIRSTKEY(db) |
152 | GDBM_File db |
153 | |
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154 | #define gdbm_NEXTKEY(db,key) gdbm_nextkey(db->dbp,key) |
155 | datum_key |
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156 | gdbm_NEXTKEY(db, key) |
157 | GDBM_File db |
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158 | datum_key key |
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159 | |
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160 | #define gdbm_reorganize(db) gdbm_reorganize(db->dbp) |
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161 | int |
162 | gdbm_reorganize(db) |
163 | GDBM_File db |
164 | |
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165 | |
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166 | #define gdbm_sync(db) gdbm_sync(db->dbp) |
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167 | void |
168 | gdbm_sync(db) |
169 | GDBM_File db |
170 | |
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171 | #define gdbm_EXISTS(db,key) gdbm_exists(db->dbp,key) |
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172 | int |
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173 | gdbm_EXISTS(db, key) |
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174 | GDBM_File db |
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175 | datum_key key |
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176 | |
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177 | #define gdbm_setopt(db,optflag, optval, optlen) gdbm_setopt(db->dbp,optflag, optval, optlen) |
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178 | int |
179 | gdbm_setopt (db, optflag, optval, optlen) |
180 | GDBM_File db |
181 | int optflag |
182 | int &optval |
183 | int optlen |
184 | |
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185 | |
186 | #define setFilter(type) \ |
187 | { \ |
188 | if (db->type) \ |
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189 | RETVAL = sv_mortalcopy(db->type) ; \ |
190 | ST(0) = RETVAL ; \ |
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191 | if (db->type && (code == &PL_sv_undef)) { \ |
192 | SvREFCNT_dec(db->type) ; \ |
193 | db->type = NULL ; \ |
194 | } \ |
195 | else if (code) { \ |
196 | if (db->type) \ |
197 | sv_setsv(db->type, code) ; \ |
198 | else \ |
199 | db->type = newSVsv(code) ; \ |
200 | } \ |
201 | } |
202 | |
203 | |
204 | |
205 | SV * |
206 | filter_fetch_key(db, code) |
207 | GDBM_File db |
208 | SV * code |
209 | SV * RETVAL = &PL_sv_undef ; |
210 | CODE: |
211 | setFilter(filter_fetch_key) ; |
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212 | |
213 | SV * |
214 | filter_store_key(db, code) |
215 | GDBM_File db |
216 | SV * code |
217 | SV * RETVAL = &PL_sv_undef ; |
218 | CODE: |
219 | setFilter(filter_store_key) ; |
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220 | |
221 | SV * |
222 | filter_fetch_value(db, code) |
223 | GDBM_File db |
224 | SV * code |
225 | SV * RETVAL = &PL_sv_undef ; |
226 | CODE: |
227 | setFilter(filter_fetch_value) ; |
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228 | |
229 | SV * |
230 | filter_store_value(db, code) |
231 | GDBM_File db |
232 | SV * code |
233 | SV * RETVAL = &PL_sv_undef ; |
234 | CODE: |
235 | setFilter(filter_store_value) ; |
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236 | |