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#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) ;
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