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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 ; |
20 | |
21 | #define ckFilter(arg,type,name) \ |
22 | if (db->type) { \ |
23 | SV * save_defsv ; \ |
24 | /* printf("filtering %s\n", name) ;*/ \ |
25 | if (db->filtering) \ |
26 | croak("recursion detected in %s", name) ; \ |
27 | db->filtering = TRUE ; \ |
28 | save_defsv = newSVsv(DEFSV) ; \ |
29 | sv_setsv(DEFSV, arg) ; \ |
30 | PUSHMARK(sp) ; \ |
31 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ |
32 | sv_setsv(arg, DEFSV) ; \ |
33 | sv_setsv(DEFSV, save_defsv) ; \ |
34 | SvREFCNT_dec(save_defsv) ; \ |
35 | db->filtering = FALSE ; \ |
36 | /*printf("end of filtering %s\n", name) ;*/ \ |
37 | } |
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38 | |
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39 | |
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40 | |
41 | #define GDBM_BLOCKSIZE 0 /* gdbm defaults to stat blocksize */ |
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42 | |
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43 | typedef void (*FATALFUNC)(); |
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44 | |
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45 | #ifndef GDBM_FAST |
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46 | static int |
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47 | not_here(char *s) |
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48 | { |
49 | croak("GDBM_File::%s not implemented on this architecture", s); |
50 | return -1; |
51 | } |
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52 | #endif |
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53 | |
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54 | /* GDBM allocates the datum with system malloc() and expects the user |
55 | * to free() it. So we either have to free() it immediately, or have |
56 | * perl free() it when it deallocates the SV, depending on whether |
57 | * perl uses malloc()/free() or not. */ |
58 | static void |
caa0600b |
59 | output_datum(pTHX_ SV *arg, char *str, int size) |
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60 | { |
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61 | #if (!defined(MYMALLOC) || (defined(MYMALLOC) && defined(PERL_POLLUTE_MALLOC))) && !defined(LEAKTEST) |
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62 | sv_usepvn(arg, str, size); |
63 | #else |
64 | sv_setpvn(arg, str, size); |
65 | safesysfree(str); |
66 | #endif |
67 | } |
68 | |
e50aee73 |
69 | /* Versions of gdbm prior to 1.7x might not have the gdbm_sync, |
70 | gdbm_exists, and gdbm_setopt functions. Apparently Slackware |
71 | (Linux) 2.1 contains gdbm-1.5 (which dates back to 1991). |
72 | */ |
73 | #ifndef GDBM_FAST |
74 | #define gdbm_exists(db,key) not_here("gdbm_exists") |
75 | #define gdbm_sync(db) (void) not_here("gdbm_sync") |
76 | #define gdbm_setopt(db,optflag,optval,optlen) not_here("gdbm_setopt") |
77 | #endif |
78 | |
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79 | static double |
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80 | constant(char *name, int arg) |
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81 | { |
82 | errno = 0; |
83 | switch (*name) { |
84 | case 'A': |
85 | break; |
86 | case 'B': |
87 | break; |
88 | case 'C': |
89 | break; |
90 | case 'D': |
91 | break; |
92 | case 'E': |
93 | break; |
94 | case 'F': |
95 | break; |
96 | case 'G': |
97 | if (strEQ(name, "GDBM_CACHESIZE")) |
98 | #ifdef GDBM_CACHESIZE |
99 | return GDBM_CACHESIZE; |
100 | #else |
101 | goto not_there; |
102 | #endif |
103 | if (strEQ(name, "GDBM_FAST")) |
104 | #ifdef GDBM_FAST |
105 | return GDBM_FAST; |
106 | #else |
107 | goto not_there; |
108 | #endif |
109 | if (strEQ(name, "GDBM_FASTMODE")) |
110 | #ifdef GDBM_FASTMODE |
111 | return GDBM_FASTMODE; |
112 | #else |
113 | goto not_there; |
114 | #endif |
115 | if (strEQ(name, "GDBM_INSERT")) |
116 | #ifdef GDBM_INSERT |
117 | return GDBM_INSERT; |
118 | #else |
119 | goto not_there; |
120 | #endif |
121 | if (strEQ(name, "GDBM_NEWDB")) |
122 | #ifdef GDBM_NEWDB |
123 | return GDBM_NEWDB; |
124 | #else |
125 | goto not_there; |
126 | #endif |
127 | if (strEQ(name, "GDBM_READER")) |
128 | #ifdef GDBM_READER |
129 | return GDBM_READER; |
130 | #else |
131 | goto not_there; |
132 | #endif |
133 | if (strEQ(name, "GDBM_REPLACE")) |
134 | #ifdef GDBM_REPLACE |
135 | return GDBM_REPLACE; |
136 | #else |
137 | goto not_there; |
138 | #endif |
139 | if (strEQ(name, "GDBM_WRCREAT")) |
140 | #ifdef GDBM_WRCREAT |
141 | return GDBM_WRCREAT; |
142 | #else |
143 | goto not_there; |
144 | #endif |
145 | if (strEQ(name, "GDBM_WRITER")) |
146 | #ifdef GDBM_WRITER |
147 | return GDBM_WRITER; |
148 | #else |
149 | goto not_there; |
150 | #endif |
151 | break; |
152 | case 'H': |
153 | break; |
154 | case 'I': |
155 | break; |
156 | case 'J': |
157 | break; |
158 | case 'K': |
159 | break; |
160 | case 'L': |
161 | break; |
162 | case 'M': |
163 | break; |
164 | case 'N': |
165 | break; |
166 | case 'O': |
167 | break; |
168 | case 'P': |
169 | break; |
170 | case 'Q': |
171 | break; |
172 | case 'R': |
173 | break; |
174 | case 'S': |
175 | break; |
176 | case 'T': |
177 | break; |
178 | case 'U': |
179 | break; |
180 | case 'V': |
181 | break; |
182 | case 'W': |
183 | break; |
184 | case 'X': |
185 | break; |
186 | case 'Y': |
187 | break; |
188 | case 'Z': |
189 | break; |
190 | } |
191 | errno = EINVAL; |
192 | return 0; |
193 | |
194 | not_there: |
195 | errno = ENOENT; |
196 | return 0; |
197 | } |
198 | |
199 | MODULE = GDBM_File PACKAGE = GDBM_File PREFIX = gdbm_ |
200 | |
201 | double |
202 | constant(name,arg) |
203 | char * name |
204 | int arg |
205 | |
206 | |
207 | GDBM_File |
208 | gdbm_TIEHASH(dbtype, name, read_write, mode, fatal_func = (FATALFUNC)croak) |
209 | char * dbtype |
210 | char * name |
211 | int read_write |
212 | int mode |
213 | FATALFUNC fatal_func |
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214 | CODE: |
215 | { |
216 | GDBM_FILE dbp ; |
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217 | |
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218 | RETVAL = NULL ; |
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219 | if ((dbp = gdbm_open(name, GDBM_BLOCKSIZE, read_write, mode, fatal_func))) { |
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220 | RETVAL = (GDBM_File)safemalloc(sizeof(GDBM_File_type)) ; |
221 | Zero(RETVAL, 1, GDBM_File_type) ; |
222 | RETVAL->dbp = dbp ; |
223 | } |
224 | |
225 | } |
226 | OUTPUT: |
227 | RETVAL |
228 | |
229 | |
230 | #define gdbm_close(db) gdbm_close(db->dbp) |
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231 | void |
232 | gdbm_close(db) |
233 | GDBM_File db |
234 | CLEANUP: |
235 | |
236 | void |
237 | gdbm_DESTROY(db) |
238 | GDBM_File db |
239 | CODE: |
240 | gdbm_close(db); |
eb99164f |
241 | safefree(db); |
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242 | |
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243 | #define gdbm_FETCH(db,key) gdbm_fetch(db->dbp,key) |
244 | datum_value |
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245 | gdbm_FETCH(db, key) |
246 | GDBM_File db |
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247 | datum_key key |
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248 | |
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249 | #define gdbm_STORE(db,key,value,flags) gdbm_store(db->dbp,key,value,flags) |
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250 | int |
251 | gdbm_STORE(db, key, value, flags = GDBM_REPLACE) |
252 | GDBM_File db |
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253 | datum_key key |
254 | datum_value value |
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255 | int flags |
256 | CLEANUP: |
257 | if (RETVAL) { |
258 | if (RETVAL < 0 && errno == EPERM) |
259 | croak("No write permission to gdbm file"); |
748a9306 |
260 | croak("gdbm store returned %d, errno %d, key \"%.*s\"", |
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261 | RETVAL,errno,key.dsize,key.dptr); |
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262 | } |
263 | |
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264 | #define gdbm_DELETE(db,key) gdbm_delete(db->dbp,key) |
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265 | int |
266 | gdbm_DELETE(db, key) |
267 | GDBM_File db |
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268 | datum_key key |
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269 | |
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270 | #define gdbm_FIRSTKEY(db) gdbm_firstkey(db->dbp) |
271 | datum_key |
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272 | gdbm_FIRSTKEY(db) |
273 | GDBM_File db |
274 | |
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275 | #define gdbm_NEXTKEY(db,key) gdbm_nextkey(db->dbp,key) |
276 | datum_key |
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277 | gdbm_NEXTKEY(db, key) |
278 | GDBM_File db |
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279 | datum_key key |
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280 | |
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281 | #define gdbm_reorganize(db) gdbm_reorganize(db->dbp) |
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282 | int |
283 | gdbm_reorganize(db) |
284 | GDBM_File db |
285 | |
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286 | |
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287 | #define gdbm_sync(db) gdbm_sync(db->dbp) |
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288 | void |
289 | gdbm_sync(db) |
290 | GDBM_File db |
291 | |
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292 | #define gdbm_EXISTS(db,key) gdbm_exists(db->dbp,key) |
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293 | int |
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294 | gdbm_EXISTS(db, key) |
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295 | GDBM_File db |
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296 | datum_key key |
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297 | |
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298 | #define gdbm_setopt(db,optflag, optval, optlen) gdbm_setopt(db->dbp,optflag, optval, optlen) |
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299 | int |
300 | gdbm_setopt (db, optflag, optval, optlen) |
301 | GDBM_File db |
302 | int optflag |
303 | int &optval |
304 | int optlen |
305 | |
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306 | |
307 | #define setFilter(type) \ |
308 | { \ |
309 | if (db->type) \ |
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310 | RETVAL = sv_mortalcopy(db->type) ; \ |
311 | ST(0) = RETVAL ; \ |
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312 | if (db->type && (code == &PL_sv_undef)) { \ |
313 | SvREFCNT_dec(db->type) ; \ |
314 | db->type = NULL ; \ |
315 | } \ |
316 | else if (code) { \ |
317 | if (db->type) \ |
318 | sv_setsv(db->type, code) ; \ |
319 | else \ |
320 | db->type = newSVsv(code) ; \ |
321 | } \ |
322 | } |
323 | |
324 | |
325 | |
326 | SV * |
327 | filter_fetch_key(db, code) |
328 | GDBM_File db |
329 | SV * code |
330 | SV * RETVAL = &PL_sv_undef ; |
331 | CODE: |
332 | setFilter(filter_fetch_key) ; |
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333 | |
334 | SV * |
335 | filter_store_key(db, code) |
336 | GDBM_File db |
337 | SV * code |
338 | SV * RETVAL = &PL_sv_undef ; |
339 | CODE: |
340 | setFilter(filter_store_key) ; |
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341 | |
342 | SV * |
343 | filter_fetch_value(db, code) |
344 | GDBM_File db |
345 | SV * code |
346 | SV * RETVAL = &PL_sv_undef ; |
347 | CODE: |
348 | setFilter(filter_fetch_value) ; |
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349 | |
350 | SV * |
351 | filter_store_value(db, code) |
352 | GDBM_File db |
353 | SV * code |
354 | SV * RETVAL = &PL_sv_undef ; |
355 | CODE: |
356 | setFilter(filter_store_value) ; |
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357 | |