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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | |
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5 | #ifdef I_DBM |
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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 |
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11 | # include <dbm.h> |
12 | #else |
13 | # ifdef I_RPCSVC_DBM |
14 | # include <rpcsvc/dbm.h> |
15 | # endif |
16 | #endif |
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17 | |
2ef53570 |
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 | |
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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 | |
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43 | #include <fcntl.h> |
44 | |
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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 ; |
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57 | typedef datum datum_value ; |
58 | |
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59 | #define odbm_FETCH(db,key) fetch(key) |
60 | #define odbm_STORE(db,key,value,flags) store(key,value) |
61 | #define odbm_DELETE(db,key) delete(key) |
62 | #define odbm_FIRSTKEY(db) firstkey() |
63 | #define odbm_NEXTKEY(db,key) nextkey(key) |
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64 | |
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65 | #define MY_CXT_KEY "ODBM_File::_guts" XS_VERSION |
66 | |
67 | typedef struct { |
68 | int x_dbmrefcnt; |
69 | } my_cxt_t; |
70 | |
71 | START_MY_CXT |
72 | |
73 | #define dbmrefcnt (MY_CXT.x_dbmrefcnt) |
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74 | |
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75 | #ifndef DBM_REPLACE |
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76 | #define DBM_REPLACE 0 |
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77 | #endif |
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78 | |
79 | MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_ |
80 | |
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81 | BOOT: |
82 | { |
83 | MY_CXT_INIT; |
84 | } |
85 | |
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86 | ODBM_File |
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87 | odbm_TIEHASH(dbtype, filename, flags, mode) |
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88 | char * dbtype |
89 | char * filename |
90 | int flags |
91 | int mode |
92 | CODE: |
93 | { |
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94 | char *tmpbuf; |
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95 | void * dbp ; |
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96 | dMY_CXT; |
97 | |
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98 | if (dbmrefcnt++) |
99 | croak("Old dbm can only open one database"); |
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100 | New(0, tmpbuf, strlen(filename) + 5, char); |
101 | SAVEFREEPV(tmpbuf); |
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102 | sprintf(tmpbuf,"%s.dir",filename); |
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103 | if (stat(tmpbuf, &PL_statbuf) < 0) { |
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104 | if (flags & O_CREAT) { |
105 | if (mode < 0 || close(creat(tmpbuf,mode)) < 0) |
106 | croak("ODBM_File: Can't create %s", filename); |
107 | sprintf(tmpbuf,"%s.pag",filename); |
108 | if (close(creat(tmpbuf,mode)) < 0) |
109 | croak("ODBM_File: Can't create %s", filename); |
110 | } |
111 | else |
112 | croak("ODBM_FILE: Can't open %s", filename); |
113 | } |
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114 | dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0); |
115 | RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ; |
116 | Zero(RETVAL, 1, ODBM_File_type) ; |
117 | RETVAL->dbp = dbp ; |
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118 | ST(0) = sv_mortalcopy(&PL_sv_undef); |
56431972 |
119 | sv_setptrobj(ST(0), RETVAL, dbtype); |
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120 | } |
121 | |
122 | void |
123 | DESTROY(db) |
124 | ODBM_File db |
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125 | PREINIT: |
126 | dMY_CXT; |
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127 | CODE: |
128 | dbmrefcnt--; |
129 | dbmclose(); |
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130 | safefree(db); |
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131 | |
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132 | datum_value |
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133 | odbm_FETCH(db, key) |
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134 | ODBM_File db |
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135 | datum_key_copy key |
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136 | |
137 | int |
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138 | odbm_STORE(db, key, value, flags = DBM_REPLACE) |
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139 | ODBM_File db |
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140 | datum_key key |
141 | datum_value value |
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142 | int flags |
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143 | CLEANUP: |
144 | if (RETVAL) { |
145 | if (RETVAL < 0 && errno == EPERM) |
146 | croak("No write permission to odbm file"); |
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147 | croak("odbm store returned %d, errno %d, key \"%s\"", |
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148 | RETVAL,errno,key.dptr); |
149 | } |
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150 | |
151 | int |
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152 | odbm_DELETE(db, key) |
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153 | ODBM_File db |
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154 | datum_key key |
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155 | |
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156 | datum_key |
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157 | odbm_FIRSTKEY(db) |
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158 | ODBM_File db |
159 | |
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160 | datum_key |
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161 | odbm_NEXTKEY(db, key) |
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162 | ODBM_File db |
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163 | datum_key key |
164 | |
165 | |
166 | #define setFilter(type) \ |
167 | { \ |
168 | if (db->type) \ |
cad2e5aa |
169 | RETVAL = sv_mortalcopy(db->type) ; \ |
170 | ST(0) = RETVAL ; \ |
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171 | if (db->type && (code == &PL_sv_undef)) { \ |
172 | SvREFCNT_dec(db->type) ; \ |
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173 | db->type = Nullsv ; \ |
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174 | } \ |
175 | else if (code) { \ |
176 | if (db->type) \ |
177 | sv_setsv(db->type, code) ; \ |
178 | else \ |
179 | db->type = newSVsv(code) ; \ |
180 | } \ |
181 | } |
182 | |
183 | |
184 | |
185 | SV * |
186 | filter_fetch_key(db, code) |
187 | ODBM_File db |
188 | SV * code |
189 | SV * RETVAL = &PL_sv_undef ; |
190 | CODE: |
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191 | DBM_setFilter(db->filter_fetch_key, code) ; |
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192 | |
193 | SV * |
194 | filter_store_key(db, code) |
195 | ODBM_File db |
196 | SV * code |
197 | SV * RETVAL = &PL_sv_undef ; |
198 | CODE: |
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199 | DBM_setFilter(db->filter_store_key, code) ; |
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200 | |
201 | SV * |
202 | filter_fetch_value(db, code) |
203 | ODBM_File db |
204 | SV * code |
205 | SV * RETVAL = &PL_sv_undef ; |
206 | CODE: |
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207 | DBM_setFilter(db->filter_fetch_value, code) ; |
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208 | |
209 | SV * |
210 | filter_store_value(db, code) |
211 | ODBM_File db |
212 | SV * code |
213 | SV * RETVAL = &PL_sv_undef ; |
214 | CODE: |
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215 | DBM_setFilter(db->filter_store_value, code) ; |
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216 | |