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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | #include "sdbm/sdbm.h" |
5 | |
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6 | typedef struct { |
7 | DBM * dbp ; |
8 | SV * filter_fetch_key ; |
9 | SV * filter_store_key ; |
10 | SV * filter_fetch_value ; |
11 | SV * filter_store_value ; |
12 | int filtering ; |
13 | } SDBM_File_type; |
14 | |
15 | typedef SDBM_File_type * SDBM_File ; |
16 | typedef datum datum_key ; |
17 | typedef datum datum_value ; |
18 | |
19 | #define ckFilter(arg,type,name) \ |
20 | if (db->type) { \ |
21 | SV * save_defsv ; \ |
22 | /* printf("filtering %s\n", name) ;*/ \ |
23 | if (db->filtering) \ |
24 | croak("recursion detected in %s", name) ; \ |
25 | db->filtering = TRUE ; \ |
26 | /* SAVE_DEFSV ;*/ /* save $_ */ \ |
27 | save_defsv = newSVsv(DEFSV) ; \ |
28 | sv_setsv(DEFSV, arg) ; \ |
29 | PUSHMARK(sp) ; \ |
30 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ |
31 | /* SPAGAIN ; */ \ |
32 | sv_setsv(arg, DEFSV) ; \ |
33 | sv_setsv(DEFSV, save_defsv) ; \ |
34 | SvREFCNT_dec(save_defsv) ; \ |
35 | /* PUTBACK ; */ \ |
36 | db->filtering = FALSE ; \ |
37 | /*printf("end of filtering %s\n", name) ;*/ \ |
38 | } |
39 | |
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40 | #define sdbm_TIEHASH(dbtype,filename,flags,mode) sdbm_open(filename,flags,mode) |
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41 | #define sdbm_FETCH(db,key) sdbm_fetch(db->dbp,key) |
42 | #define sdbm_STORE(db,key,value,flags) sdbm_store(db->dbp,key,value,flags) |
43 | #define sdbm_DELETE(db,key) sdbm_delete(db->dbp,key) |
44 | #define sdbm_EXISTS(db,key) sdbm_exists(db->dbp,key) |
45 | #define sdbm_FIRSTKEY(db) sdbm_firstkey(db->dbp) |
46 | #define sdbm_NEXTKEY(db,key) sdbm_nextkey(db->dbp) |
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47 | |
48 | |
49 | MODULE = SDBM_File PACKAGE = SDBM_File PREFIX = sdbm_ |
50 | |
51 | SDBM_File |
52 | sdbm_TIEHASH(dbtype, filename, flags, mode) |
53 | char * dbtype |
54 | char * filename |
55 | int flags |
56 | int mode |
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57 | CODE: |
58 | { |
59 | DBM * dbp ; |
60 | |
61 | RETVAL = NULL ; |
62 | if (dbp = sdbm_open(filename,flags,mode) ) { |
63 | RETVAL = (SDBM_File)safemalloc(sizeof(SDBM_File_type)) ; |
64 | Zero(RETVAL, 1, SDBM_File_type) ; |
65 | RETVAL->dbp = dbp ; |
66 | } |
67 | |
68 | } |
69 | OUTPUT: |
70 | RETVAL |
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71 | |
72 | void |
73 | sdbm_DESTROY(db) |
74 | SDBM_File db |
75 | CODE: |
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76 | sdbm_close(db->dbp); |
77 | if (db->filter_fetch_key) |
78 | SvREFCNT_dec(db->filter_fetch_key) ; |
79 | if (db->filter_store_key) |
80 | SvREFCNT_dec(db->filter_store_key) ; |
81 | if (db->filter_fetch_value) |
82 | SvREFCNT_dec(db->filter_fetch_value) ; |
83 | if (db->filter_store_value) |
84 | SvREFCNT_dec(db->filter_store_value) ; |
85 | Safefree(db) ; |
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86 | |
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87 | datum_value |
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88 | sdbm_FETCH(db, key) |
89 | SDBM_File db |
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90 | datum_key key |
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91 | |
92 | int |
93 | sdbm_STORE(db, key, value, flags = DBM_REPLACE) |
94 | SDBM_File db |
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95 | datum_key key |
96 | datum_value value |
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97 | int flags |
98 | CLEANUP: |
99 | if (RETVAL) { |
100 | if (RETVAL < 0 && errno == EPERM) |
101 | croak("No write permission to sdbm file"); |
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102 | croak("sdbm store returned %d, errno %d, key \"%s\"", |
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103 | RETVAL,errno,key.dptr); |
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104 | sdbm_clearerr(db->dbp); |
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105 | } |
106 | |
107 | int |
108 | sdbm_DELETE(db, key) |
109 | SDBM_File db |
110 | datum key |
111 | |
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112 | int |
113 | sdbm_EXISTS(db,key) |
114 | SDBM_File db |
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115 | datum_key key |
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116 | |
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117 | datum_key |
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118 | sdbm_FIRSTKEY(db) |
119 | SDBM_File db |
120 | |
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121 | datum_key |
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122 | sdbm_NEXTKEY(db, key) |
123 | SDBM_File db |
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124 | datum_key key |
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125 | |
126 | int |
127 | sdbm_error(db) |
128 | SDBM_File db |
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129 | CODE: |
130 | RETVAL = sdbm_error(db->dbp) ; |
131 | OUTPUT: |
132 | RETVAL |
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133 | |
134 | int |
135 | sdbm_clearerr(db) |
136 | SDBM_File db |
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137 | CODE: |
138 | RETVAL = sdbm_clearerr(db->dbp) ; |
139 | OUTPUT: |
140 | RETVAL |
141 | |
142 | |
143 | #define setFilter(type) \ |
144 | { \ |
145 | if (db->type) \ |
146 | RETVAL = newSVsv(db->type) ; \ |
147 | if (db->type && (code == &PL_sv_undef)) { \ |
148 | SvREFCNT_dec(db->type) ; \ |
149 | db->type = NULL ; \ |
150 | } \ |
151 | else if (code) { \ |
152 | if (db->type) \ |
153 | sv_setsv(db->type, code) ; \ |
154 | else \ |
155 | db->type = newSVsv(code) ; \ |
156 | } \ |
157 | } |
158 | |
159 | |
160 | |
161 | SV * |
162 | filter_fetch_key(db, code) |
163 | SDBM_File db |
164 | SV * code |
165 | SV * RETVAL = &PL_sv_undef ; |
166 | CODE: |
167 | setFilter(filter_fetch_key) ; |
168 | OUTPUT: |
169 | RETVAL |
170 | |
171 | SV * |
172 | filter_store_key(db, code) |
173 | SDBM_File db |
174 | SV * code |
175 | SV * RETVAL = &PL_sv_undef ; |
176 | CODE: |
177 | setFilter(filter_store_key) ; |
178 | OUTPUT: |
179 | RETVAL |
180 | |
181 | SV * |
182 | filter_fetch_value(db, code) |
183 | SDBM_File db |
184 | SV * code |
185 | SV * RETVAL = &PL_sv_undef ; |
186 | CODE: |
187 | setFilter(filter_fetch_value) ; |
188 | OUTPUT: |
189 | RETVAL |
190 | |
191 | SV * |
192 | filter_store_value(db, code) |
193 | SDBM_File db |
194 | SV * code |
195 | SV * RETVAL = &PL_sv_undef ; |
196 | CODE: |
197 | setFilter(filter_store_value) ; |
198 | OUTPUT: |
199 | RETVAL |
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200 | |