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