Commit | Line | Data |
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463ee0b2 LW |
1 | #include "EXTERN.h" |
2 | #include "perl.h" | |
3 | #include "XSUB.h" | |
4 | ||
8e07c86e | 5 | #ifdef I_DBM |
bb636fa4 JH |
6 | /* If using the DB3 emulation, ENTER is defined both |
7 | * by DB3 and Perl. We drop the Perl definition now. | |
8 | * See also INSTALL section on DB3. | |
9 | * -- Stanislav Brabec <utx@penguin.cz> */ | |
10 | # undef ENTER | |
8e07c86e AD |
11 | # include <dbm.h> |
12 | #else | |
13 | # ifdef I_RPCSVC_DBM | |
14 | # include <rpcsvc/dbm.h> | |
15 | # endif | |
16 | #endif | |
463ee0b2 | 17 | |
2ef53570 JH |
18 | #ifndef HAS_DBMINIT_PROTO |
19 | int dbminit(char* filename); | |
20 | int dbmclose(void); | |
21 | datum fetch(datum key); | |
22 | int store(datum key, datum dat); | |
23 | int delete(datum key); | |
24 | datum firstkey(void); | |
25 | datum nextkey(datum key); | |
26 | #endif | |
27 | ||
1639c7b3 | 28 | #ifdef DBM_BUG_DUPLICATE_FREE |
29 | /* | |
30 | * DBM on at least Ultrix and HPUX call dbmclose() from dbminit(), | |
31 | * resulting in duplicate free() because dbmclose() does *not* | |
32 | * check if it has already been called for this DBM. | |
33 | * If some malloc/free calls have been done between dbmclose() and | |
34 | * the next dbminit(), the memory might be used for something else when | |
35 | * it is freed. | |
36 | * Verified to work on ultrix4.3. Probably will work on HP/UX. | |
37 | * Set DBM_BUG_DUPLICATE_FREE in the extension hint file. | |
38 | */ | |
39 | /* Close the previous dbm, and fail to open a new dbm */ | |
40 | #define dbmclose() ((void) dbminit("/tmp/x/y/z/z/y")) | |
41 | #endif | |
42 | ||
463ee0b2 LW |
43 | #include <fcntl.h> |
44 | ||
9fe6733a PM |
45 | typedef struct { |
46 | void * dbp ; | |
47 | SV * filter_fetch_key ; | |
48 | SV * filter_store_key ; | |
49 | SV * filter_fetch_value ; | |
50 | SV * filter_store_value ; | |
51 | int filtering ; | |
52 | } ODBM_File_type; | |
53 | ||
54 | typedef ODBM_File_type * ODBM_File ; | |
55 | typedef datum datum_key ; | |
0bf2e707 | 56 | typedef datum datum_key_copy ; |
9fe6733a PM |
57 | typedef datum datum_value ; |
58 | ||
59 | #define ckFilter(arg,type,name) \ | |
60 | if (db->type) { \ | |
61 | SV * save_defsv ; \ | |
62 | /* printf("filtering %s\n", name) ;*/ \ | |
63 | if (db->filtering) \ | |
64 | croak("recursion detected in %s", name) ; \ | |
65 | db->filtering = TRUE ; \ | |
66 | save_defsv = newSVsv(DEFSV) ; \ | |
67 | sv_setsv(DEFSV, arg) ; \ | |
68 | PUSHMARK(sp) ; \ | |
69 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ | |
70 | sv_setsv(arg, DEFSV) ; \ | |
71 | sv_setsv(DEFSV, save_defsv) ; \ | |
72 | SvREFCNT_dec(save_defsv) ; \ | |
73 | db->filtering = FALSE ; \ | |
74 | /*printf("end of filtering %s\n", name) ;*/ \ | |
75 | } | |
76 | ||
463ee0b2 | 77 | |
a0d0e21e LW |
78 | #define odbm_FETCH(db,key) fetch(key) |
79 | #define odbm_STORE(db,key,value,flags) store(key,value) | |
80 | #define odbm_DELETE(db,key) delete(key) | |
81 | #define odbm_FIRSTKEY(db) firstkey() | |
82 | #define odbm_NEXTKEY(db,key) nextkey(key) | |
463ee0b2 | 83 | |
df3728a2 JH |
84 | #define MY_CXT_KEY "ODBM_File::_guts" XS_VERSION |
85 | ||
86 | typedef struct { | |
87 | int x_dbmrefcnt; | |
88 | } my_cxt_t; | |
89 | ||
90 | START_MY_CXT | |
91 | ||
92 | #define dbmrefcnt (MY_CXT.x_dbmrefcnt) | |
463ee0b2 | 93 | |
85e6fe83 | 94 | #ifndef DBM_REPLACE |
463ee0b2 | 95 | #define DBM_REPLACE 0 |
85e6fe83 | 96 | #endif |
463ee0b2 LW |
97 | |
98 | MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_ | |
99 | ||
df3728a2 JH |
100 | BOOT: |
101 | { | |
102 | MY_CXT_INIT; | |
103 | } | |
104 | ||
463ee0b2 | 105 | ODBM_File |
a0d0e21e | 106 | odbm_TIEHASH(dbtype, filename, flags, mode) |
463ee0b2 LW |
107 | char * dbtype |
108 | char * filename | |
109 | int flags | |
110 | int mode | |
111 | CODE: | |
112 | { | |
46fc3d4c | 113 | char *tmpbuf; |
9fe6733a | 114 | void * dbp ; |
df3728a2 JH |
115 | dMY_CXT; |
116 | ||
463ee0b2 LW |
117 | if (dbmrefcnt++) |
118 | croak("Old dbm can only open one database"); | |
46fc3d4c | 119 | New(0, tmpbuf, strlen(filename) + 5, char); |
120 | SAVEFREEPV(tmpbuf); | |
463ee0b2 | 121 | sprintf(tmpbuf,"%s.dir",filename); |
3280af22 | 122 | if (stat(tmpbuf, &PL_statbuf) < 0) { |
463ee0b2 LW |
123 | if (flags & O_CREAT) { |
124 | if (mode < 0 || close(creat(tmpbuf,mode)) < 0) | |
125 | croak("ODBM_File: Can't create %s", filename); | |
126 | sprintf(tmpbuf,"%s.pag",filename); | |
127 | if (close(creat(tmpbuf,mode)) < 0) | |
128 | croak("ODBM_File: Can't create %s", filename); | |
129 | } | |
130 | else | |
131 | croak("ODBM_FILE: Can't open %s", filename); | |
132 | } | |
9fe6733a PM |
133 | dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0); |
134 | RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ; | |
135 | Zero(RETVAL, 1, ODBM_File_type) ; | |
136 | RETVAL->dbp = dbp ; | |
6b88bc9c | 137 | ST(0) = sv_mortalcopy(&PL_sv_undef); |
56431972 | 138 | sv_setptrobj(ST(0), RETVAL, dbtype); |
463ee0b2 LW |
139 | } |
140 | ||
141 | void | |
142 | DESTROY(db) | |
143 | ODBM_File db | |
df3728a2 JH |
144 | PREINIT: |
145 | dMY_CXT; | |
463ee0b2 LW |
146 | CODE: |
147 | dbmrefcnt--; | |
148 | dbmclose(); | |
eb99164f | 149 | safefree(db); |
463ee0b2 | 150 | |
1b882d32 | 151 | datum_value |
a0d0e21e | 152 | odbm_FETCH(db, key) |
463ee0b2 | 153 | ODBM_File db |
0bf2e707 | 154 | datum_key_copy key |
463ee0b2 LW |
155 | |
156 | int | |
a0d0e21e | 157 | odbm_STORE(db, key, value, flags = DBM_REPLACE) |
463ee0b2 | 158 | ODBM_File db |
9fe6733a PM |
159 | datum_key key |
160 | datum_value value | |
463ee0b2 | 161 | int flags |
a0d0e21e LW |
162 | CLEANUP: |
163 | if (RETVAL) { | |
164 | if (RETVAL < 0 && errno == EPERM) | |
165 | croak("No write permission to odbm file"); | |
748a9306 | 166 | croak("odbm store returned %d, errno %d, key \"%s\"", |
a0d0e21e LW |
167 | RETVAL,errno,key.dptr); |
168 | } | |
463ee0b2 LW |
169 | |
170 | int | |
a0d0e21e | 171 | odbm_DELETE(db, key) |
463ee0b2 | 172 | ODBM_File db |
9fe6733a | 173 | datum_key key |
463ee0b2 | 174 | |
9fe6733a | 175 | datum_key |
a0d0e21e | 176 | odbm_FIRSTKEY(db) |
463ee0b2 LW |
177 | ODBM_File db |
178 | ||
9fe6733a | 179 | datum_key |
a0d0e21e | 180 | odbm_NEXTKEY(db, key) |
463ee0b2 | 181 | ODBM_File db |
9fe6733a PM |
182 | datum_key key |
183 | ||
184 | ||
185 | #define setFilter(type) \ | |
186 | { \ | |
187 | if (db->type) \ | |
cad2e5aa JH |
188 | RETVAL = sv_mortalcopy(db->type) ; \ |
189 | ST(0) = RETVAL ; \ | |
9fe6733a PM |
190 | if (db->type && (code == &PL_sv_undef)) { \ |
191 | SvREFCNT_dec(db->type) ; \ | |
1b882d32 | 192 | db->type = Nullsv ; \ |
9fe6733a PM |
193 | } \ |
194 | else if (code) { \ | |
195 | if (db->type) \ | |
196 | sv_setsv(db->type, code) ; \ | |
197 | else \ | |
198 | db->type = newSVsv(code) ; \ | |
199 | } \ | |
200 | } | |
201 | ||
202 | ||
203 | ||
204 | SV * | |
205 | filter_fetch_key(db, code) | |
206 | ODBM_File db | |
207 | SV * code | |
208 | SV * RETVAL = &PL_sv_undef ; | |
209 | CODE: | |
210 | setFilter(filter_fetch_key) ; | |
9fe6733a PM |
211 | |
212 | SV * | |
213 | filter_store_key(db, code) | |
214 | ODBM_File db | |
215 | SV * code | |
216 | SV * RETVAL = &PL_sv_undef ; | |
217 | CODE: | |
218 | setFilter(filter_store_key) ; | |
9fe6733a PM |
219 | |
220 | SV * | |
221 | filter_fetch_value(db, code) | |
222 | ODBM_File db | |
223 | SV * code | |
224 | SV * RETVAL = &PL_sv_undef ; | |
225 | CODE: | |
226 | setFilter(filter_fetch_value) ; | |
9fe6733a PM |
227 | |
228 | SV * | |
229 | filter_store_value(db, code) | |
230 | ODBM_File db | |
231 | SV * code | |
232 | SV * RETVAL = &PL_sv_undef ; | |
233 | CODE: | |
234 | setFilter(filter_store_value) ; | |
463ee0b2 | 235 |