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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
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4 | /* If using the DB3 emulation, ENTER is defined both |
5 | * by DB3 and Perl. We drop the Perl definition now. |
6 | * See also INSTALL section on DB3. |
7 | * -- Stanislav Brabec <utx@penguin.cz> */ |
8 | #undef ENTER |
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9 | #include <ndbm.h> |
10 | |
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11 | typedef struct { |
12 | DBM * dbp ; |
13 | SV * filter_fetch_key ; |
14 | SV * filter_store_key ; |
15 | SV * filter_fetch_value ; |
16 | SV * filter_store_value ; |
17 | int filtering ; |
18 | } NDBM_File_type; |
19 | |
20 | typedef NDBM_File_type * NDBM_File ; |
21 | typedef datum datum_key ; |
22 | typedef datum datum_value ; |
23 | |
24 | #define ckFilter(arg,type,name) \ |
25 | if (db->type) { \ |
26 | SV * save_defsv ; \ |
27 | /* printf("filtering %s\n", name) ;*/ \ |
28 | if (db->filtering) \ |
29 | croak("recursion detected in %s", name) ; \ |
30 | db->filtering = TRUE ; \ |
31 | save_defsv = newSVsv(DEFSV) ; \ |
32 | sv_setsv(DEFSV, arg) ; \ |
33 | PUSHMARK(sp) ; \ |
34 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ |
35 | sv_setsv(arg, DEFSV) ; \ |
36 | sv_setsv(DEFSV, save_defsv) ; \ |
37 | SvREFCNT_dec(save_defsv) ; \ |
38 | db->filtering = FALSE ; \ |
39 | /*printf("end of filtering %s\n", name) ;*/ \ |
40 | } |
41 | |
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42 | |
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43 | MODULE = NDBM_File PACKAGE = NDBM_File PREFIX = ndbm_ |
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44 | |
45 | NDBM_File |
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46 | ndbm_TIEHASH(dbtype, filename, flags, mode) |
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47 | char * dbtype |
48 | char * filename |
49 | int flags |
50 | int mode |
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51 | CODE: |
52 | { |
53 | DBM * dbp ; |
54 | |
55 | RETVAL = NULL ; |
56 | if (dbp = dbm_open(filename, flags, mode)) { |
57 | RETVAL = (NDBM_File)safemalloc(sizeof(NDBM_File_type)) ; |
58 | Zero(RETVAL, 1, NDBM_File_type) ; |
59 | RETVAL->dbp = dbp ; |
60 | } |
61 | |
62 | } |
63 | OUTPUT: |
64 | RETVAL |
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65 | |
66 | void |
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67 | ndbm_DESTROY(db) |
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68 | NDBM_File db |
69 | CODE: |
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70 | dbm_close(db->dbp); |
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71 | safefree(db); |
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72 | |
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73 | #define ndbm_FETCH(db,key) dbm_fetch(db->dbp,key) |
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74 | datum_value |
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75 | ndbm_FETCH(db, key) |
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76 | NDBM_File db |
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77 | datum_key key |
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78 | |
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79 | #define ndbm_STORE(db,key,value,flags) dbm_store(db->dbp,key,value,flags) |
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80 | int |
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81 | ndbm_STORE(db, key, value, flags = DBM_REPLACE) |
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82 | NDBM_File db |
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83 | datum_key key |
84 | datum_value value |
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85 | int flags |
86 | CLEANUP: |
87 | if (RETVAL) { |
88 | if (RETVAL < 0 && errno == EPERM) |
89 | croak("No write permission to ndbm file"); |
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90 | croak("ndbm store returned %d, errno %d, key \"%s\"", |
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91 | RETVAL,errno,key.dptr); |
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92 | dbm_clearerr(db->dbp); |
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93 | } |
94 | |
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95 | #define ndbm_DELETE(db,key) dbm_delete(db->dbp,key) |
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96 | int |
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97 | ndbm_DELETE(db, key) |
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98 | NDBM_File db |
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99 | datum_key key |
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100 | |
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101 | #define ndbm_FIRSTKEY(db) dbm_firstkey(db->dbp) |
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102 | datum_key |
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103 | ndbm_FIRSTKEY(db) |
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104 | NDBM_File db |
105 | |
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106 | #define ndbm_NEXTKEY(db,key) dbm_nextkey(db->dbp) |
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107 | datum_key |
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108 | ndbm_NEXTKEY(db, key) |
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109 | NDBM_File db |
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110 | datum_key key |
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111 | |
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112 | #define ndbm_error(db) dbm_error(db->dbp) |
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113 | int |
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114 | ndbm_error(db) |
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115 | NDBM_File db |
116 | |
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117 | #define ndbm_clearerr(db) dbm_clearerr(db->dbp) |
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118 | void |
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119 | ndbm_clearerr(db) |
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120 | NDBM_File db |
121 | |
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122 | |
123 | #define setFilter(type) \ |
124 | { \ |
125 | if (db->type) \ |
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126 | RETVAL = sv_mortalcopy(db->type) ; \ |
127 | ST(0) = RETVAL ; \ |
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128 | if (db->type && (code == &PL_sv_undef)) { \ |
129 | SvREFCNT_dec(db->type) ; \ |
130 | db->type = NULL ; \ |
131 | } \ |
132 | else if (code) { \ |
133 | if (db->type) \ |
134 | sv_setsv(db->type, code) ; \ |
135 | else \ |
136 | db->type = newSVsv(code) ; \ |
137 | } \ |
138 | } |
139 | |
140 | |
141 | |
142 | SV * |
143 | filter_fetch_key(db, code) |
144 | NDBM_File db |
145 | SV * code |
146 | SV * RETVAL = &PL_sv_undef ; |
147 | CODE: |
148 | setFilter(filter_fetch_key) ; |
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149 | |
150 | SV * |
151 | filter_store_key(db, code) |
152 | NDBM_File db |
153 | SV * code |
154 | SV * RETVAL = &PL_sv_undef ; |
155 | CODE: |
156 | setFilter(filter_store_key) ; |
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157 | |
158 | SV * |
159 | filter_fetch_value(db, code) |
160 | NDBM_File db |
161 | SV * code |
162 | SV * RETVAL = &PL_sv_undef ; |
163 | CODE: |
164 | setFilter(filter_fetch_value) ; |
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165 | |
166 | SV * |
167 | filter_store_value(db, code) |
168 | NDBM_File db |
169 | SV * code |
170 | SV * RETVAL = &PL_sv_undef ; |
171 | CODE: |
172 | setFilter(filter_store_value) ; |
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173 | |