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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | #include <ndbm.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 | } NDBM_File_type; |
14 | |
15 | typedef NDBM_File_type * NDBM_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 = newSVsv(DEFSV) ; \ |
27 | sv_setsv(DEFSV, arg) ; \ |
28 | PUSHMARK(sp) ; \ |
29 | (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); \ |
30 | sv_setsv(arg, DEFSV) ; \ |
31 | sv_setsv(DEFSV, save_defsv) ; \ |
32 | SvREFCNT_dec(save_defsv) ; \ |
33 | db->filtering = FALSE ; \ |
34 | /*printf("end of filtering %s\n", name) ;*/ \ |
35 | } |
36 | |
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37 | |
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38 | MODULE = NDBM_File PACKAGE = NDBM_File PREFIX = ndbm_ |
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39 | |
40 | NDBM_File |
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41 | ndbm_TIEHASH(dbtype, filename, flags, mode) |
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42 | char * dbtype |
43 | char * filename |
44 | int flags |
45 | int mode |
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46 | CODE: |
47 | { |
48 | DBM * dbp ; |
49 | |
50 | RETVAL = NULL ; |
51 | if (dbp = dbm_open(filename, flags, mode)) { |
52 | RETVAL = (NDBM_File)safemalloc(sizeof(NDBM_File_type)) ; |
53 | Zero(RETVAL, 1, NDBM_File_type) ; |
54 | RETVAL->dbp = dbp ; |
55 | } |
56 | |
57 | } |
58 | OUTPUT: |
59 | RETVAL |
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60 | |
61 | void |
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62 | ndbm_DESTROY(db) |
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63 | NDBM_File db |
64 | CODE: |
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65 | dbm_close(db->dbp); |
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66 | |
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67 | #define ndbm_FETCH(db,key) dbm_fetch(db->dbp,key) |
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68 | datum_value |
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69 | ndbm_FETCH(db, key) |
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70 | NDBM_File db |
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71 | datum_key key |
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72 | |
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73 | #define ndbm_STORE(db,key,value,flags) dbm_store(db->dbp,key,value,flags) |
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74 | int |
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75 | ndbm_STORE(db, key, value, flags = DBM_REPLACE) |
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76 | NDBM_File db |
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77 | datum_key key |
78 | datum_value value |
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79 | int flags |
80 | CLEANUP: |
81 | if (RETVAL) { |
82 | if (RETVAL < 0 && errno == EPERM) |
83 | croak("No write permission to ndbm file"); |
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84 | croak("ndbm store returned %d, errno %d, key \"%s\"", |
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85 | RETVAL,errno,key.dptr); |
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86 | dbm_clearerr(db->dbp); |
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87 | } |
88 | |
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89 | #define ndbm_DELETE(db,key) dbm_delete(db->dbp,key) |
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90 | int |
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91 | ndbm_DELETE(db, key) |
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92 | NDBM_File db |
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93 | datum_key key |
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94 | |
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95 | #define ndbm_FIRSTKEY(db) dbm_firstkey(db->dbp) |
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96 | datum_key |
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97 | ndbm_FIRSTKEY(db) |
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98 | NDBM_File db |
99 | |
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100 | #define ndbm_NEXTKEY(db,key) dbm_nextkey(db->dbp) |
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101 | datum_key |
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102 | ndbm_NEXTKEY(db, key) |
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103 | NDBM_File db |
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104 | datum_key key |
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105 | |
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106 | #define ndbm_error(db) dbm_error(db->dbp) |
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107 | int |
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108 | ndbm_error(db) |
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109 | NDBM_File db |
110 | |
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111 | #define ndbm_clearerr(db) dbm_clearerr(db->dbp) |
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112 | void |
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113 | ndbm_clearerr(db) |
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114 | NDBM_File db |
115 | |
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116 | |
117 | #define setFilter(type) \ |
118 | { \ |
119 | if (db->type) \ |
120 | RETVAL = newSVsv(db->type) ; \ |
121 | if (db->type && (code == &PL_sv_undef)) { \ |
122 | SvREFCNT_dec(db->type) ; \ |
123 | db->type = NULL ; \ |
124 | } \ |
125 | else if (code) { \ |
126 | if (db->type) \ |
127 | sv_setsv(db->type, code) ; \ |
128 | else \ |
129 | db->type = newSVsv(code) ; \ |
130 | } \ |
131 | } |
132 | |
133 | |
134 | |
135 | SV * |
136 | filter_fetch_key(db, code) |
137 | NDBM_File db |
138 | SV * code |
139 | SV * RETVAL = &PL_sv_undef ; |
140 | CODE: |
141 | setFilter(filter_fetch_key) ; |
142 | OUTPUT: |
143 | RETVAL |
144 | |
145 | SV * |
146 | filter_store_key(db, code) |
147 | NDBM_File db |
148 | SV * code |
149 | SV * RETVAL = &PL_sv_undef ; |
150 | CODE: |
151 | setFilter(filter_store_key) ; |
152 | OUTPUT: |
153 | RETVAL |
154 | |
155 | SV * |
156 | filter_fetch_value(db, code) |
157 | NDBM_File db |
158 | SV * code |
159 | SV * RETVAL = &PL_sv_undef ; |
160 | CODE: |
161 | setFilter(filter_fetch_value) ; |
162 | OUTPUT: |
163 | RETVAL |
164 | |
165 | SV * |
166 | filter_store_value(db, code) |
167 | NDBM_File db |
168 | SV * code |
169 | SV * RETVAL = &PL_sv_undef ; |
170 | CODE: |
171 | setFilter(filter_store_value) ; |
172 | OUTPUT: |
173 | RETVAL |
174 | |