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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <gdbm.h>
#include <fcntl.h>
#define fetch_key 0
#define store_key 1
#define fetch_value 2
#define store_value 3
typedef struct {
GDBM_FILE dbp ;
SV * filter[4];
int filtering ;
} GDBM_File_type;
typedef GDBM_File_type * GDBM_File ;
typedef datum datum_key ;
typedef datum datum_value ;
typedef datum datum_key_copy;
#define GDBM_BLOCKSIZE 0 /* gdbm defaults to stat blocksize */
typedef void (*FATALFUNC)();
#ifndef GDBM_FAST
static int
not_here(char *s)
{
croak("GDBM_File::%s not implemented on this architecture", s);
return -1;
}
#endif
/* GDBM allocates the datum with system malloc() and expects the user
* to free() it. So we either have to free() it immediately, or have
* perl free() it when it deallocates the SV, depending on whether
* perl uses malloc()/free() or not. */
static void
output_datum(pTHX_ SV *arg, char *str, int size)
{
sv_setpvn(arg, str, size);
# undef free
free(str);
}
/* Versions of gdbm prior to 1.7x might not have the gdbm_sync,
gdbm_exists, and gdbm_setopt functions. Apparently Slackware
(Linux) 2.1 contains gdbm-1.5 (which dates back to 1991).
*/
#ifndef GDBM_FAST
#define gdbm_exists(db,key) not_here("gdbm_exists")
#define gdbm_sync(db) (void) not_here("gdbm_sync")
#define gdbm_setopt(db,optflag,optval,optlen) not_here("gdbm_setopt")
#endif
#include "const-c.inc"
MODULE = GDBM_File PACKAGE = GDBM_File PREFIX = gdbm_
INCLUDE: const-xs.inc
GDBM_File
gdbm_TIEHASH(dbtype, name, read_write, mode, fatal_func = (FATALFUNC)croak)
char * dbtype
char * name
int read_write
int mode
FATALFUNC fatal_func
CODE:
{
GDBM_FILE dbp ;
RETVAL = NULL ;
if ((dbp = gdbm_open(name, GDBM_BLOCKSIZE, read_write, mode, fatal_func))) {
RETVAL = (GDBM_File)safecalloc(1, sizeof(GDBM_File_type)) ;
RETVAL->dbp = dbp ;
}
}
OUTPUT:
RETVAL
#define gdbm_close(db) gdbm_close(db->dbp)
void
gdbm_close(db)
GDBM_File db
CLEANUP:
void
gdbm_DESTROY(db)
GDBM_File db
PREINIT:
int i = store_value;
CODE:
gdbm_close(db);
do {
if (db->filter[i])
SvREFCNT_dec(db->filter[i]);
} while (i-- > 0);
safefree(db);
#define gdbm_FETCH(db,key) gdbm_fetch(db->dbp,key)
datum_value
gdbm_FETCH(db, key)
GDBM_File db
datum_key_copy key
#define gdbm_STORE(db,key,value,flags) gdbm_store(db->dbp,key,value,flags)
int
gdbm_STORE(db, key, value, flags = GDBM_REPLACE)
GDBM_File db
datum_key key
datum_value value
int flags
CLEANUP:
if (RETVAL) {
if (RETVAL < 0 && errno == EPERM)
croak("No write permission to gdbm file");
croak("gdbm store returned %d, errno %d, key \"%.*s\"",
RETVAL,errno,key.dsize,key.dptr);
}
#define gdbm_DELETE(db,key) gdbm_delete(db->dbp,key)
int
gdbm_DELETE(db, key)
GDBM_File db
datum_key key
#define gdbm_FIRSTKEY(db) gdbm_firstkey(db->dbp)
datum_key
gdbm_FIRSTKEY(db)
GDBM_File db
#define gdbm_NEXTKEY(db,key) gdbm_nextkey(db->dbp,key)
datum_key
gdbm_NEXTKEY(db, key)
GDBM_File db
datum_key key
#define gdbm_reorganize(db) gdbm_reorganize(db->dbp)
int
gdbm_reorganize(db)
GDBM_File db
#define gdbm_sync(db) gdbm_sync(db->dbp)
void
gdbm_sync(db)
GDBM_File db
#define gdbm_EXISTS(db,key) gdbm_exists(db->dbp,key)
int
gdbm_EXISTS(db, key)
GDBM_File db
datum_key key
#define gdbm_setopt(db,optflag, optval, optlen) gdbm_setopt(db->dbp,optflag, optval, optlen)
int
gdbm_setopt (db, optflag, optval, optlen)
GDBM_File db
int optflag
int &optval
int optlen
SV *
filter_fetch_key(db, code)
GDBM_File db
SV * code
SV * RETVAL = &PL_sv_undef ;
ALIAS:
GDBM_File::filter_fetch_key = fetch_key
GDBM_File::filter_store_key = store_key
GDBM_File::filter_fetch_value = fetch_value
GDBM_File::filter_store_value = store_value
CODE:
DBM_setFilter(db->filter[ix], code);
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