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|
# DB_File.pm -- Perl 5 interface to Berkeley DB
#
# written by Paul Marquess (pmarquess@bfsec.bt.co.uk)
# last modified 23rd June 1994
# version 0.1
package DB_File::HASHINFO ;
use Carp;
sub TIEHASH
{
bless {} ;
}
%elements = ( 'bsize' => 0,
'ffactor' => 0,
'nelem' => 0,
'cachesize' => 0,
'hash' => 0,
'lorder' => 0
) ;
sub FETCH
{
return $_[0]{$_[1]} if defined $elements{$_[1]} ;
croak "DB_File::HASHINFO::FETCH - Unknown element '$_[1]'" ;
}
sub STORE
{
if ( defined $elements{$_[1]} )
{
$_[0]{$_[1]} = $_[2] ;
return ;
}
croak "DB_File::HASHINFO::STORE - Unknown element '$_[1]'" ;
}
sub DELETE
{
if ( defined $elements{$_[1]} )
{
delete ${$_[0]}{$_[1]} ;
return ;
}
croak "DB_File::HASHINFO::DELETE - Unknown element '$_[1]'" ;
}
sub DESTROY {undef %{$_[0]} }
sub FIRSTKEY { croak "DB_File::HASHINFO::FIRSTKEY is not implemented" }
sub NEXTKEY { croak "DB_File::HASHINFO::NEXTKEY is not implemented" }
sub EXISTS { croak "DB_File::HASHINFO::EXISTS is not implemented" }
sub CLEAR { croak "DB_File::HASHINFO::CLEAR is not implemented" }
package DB_File::BTREEINFO ;
use Carp;
sub TIEHASH
{
bless {} ;
}
%elements = ( 'flags' => 0,
'cachesize' => 0,
'maxkeypage' => 0,
'minkeypage' => 0,
'psize' => 0,
'compare' => 0,
'prefix' => 0,
'lorder' => 0
) ;
sub FETCH
{
return $_[0]{$_[1]} if defined $elements{$_[1]} ;
croak "DB_File::BTREEINFO::FETCH - Unknown element '$_[1]'" ;
}
sub STORE
{
if ( defined $elements{$_[1]} )
{
$_[0]{$_[1]} = $_[2] ;
return ;
}
croak "DB_File::BTREEINFO::STORE - Unknown element '$_[1]'" ;
}
sub DELETE
{
if ( defined $elements{$_[1]} )
{
delete ${$_[0]}{$_[1]} ;
return ;
}
croak "DB_File::BTREEINFO::DELETE - Unknown element '$_[1]'" ;
}
sub DESTROY {undef %{$_[0]} }
sub FIRSTKEY { croak "DB_File::BTREEINFO::FIRSTKEY is not implemented" }
sub NEXTKEY { croak "DB_File::BTREEINFO::NEXTKEY is not implemented" }
sub EXISTS { croak "DB_File::BTREEINFO::EXISTS is not implemented" }
sub CLEAR { croak "DB_File::BTREEINFO::CLEAR is not implemented" }
package DB_File::RECNOINFO ;
use Carp;
sub TIEHASH
{
bless {} ;
}
%elements = ( 'bval' => 0,
'cachesize' => 0,
'psize' => 0,
'flags' => 0,
'lorder' => 0,
'reclen' => 0,
'bfname' => 0
) ;
sub FETCH
{
return $_[0]{$_[1]} if defined $elements{$_[1]} ;
croak "DB_File::RECNOINFO::FETCH - Unknown element '$_[1]'" ;
}
sub STORE
{
if ( defined $elements{$_[1]} )
{
$_[0]{$_[1]} = $_[2] ;
return ;
}
croak "DB_File::RECNOINFO::STORE - Unknown element '$_[1]'" ;
}
sub DELETE
{
if ( defined $elements{$_[1]} )
{
delete ${$_[0]}{$_[1]} ;
return ;
}
croak "DB_File::RECNOINFO::DELETE - Unknown element '$_[1]'" ;
}
sub DESTROY {undef %{$_[0]} }
sub FIRSTKEY { croak "DB_File::RECNOINFO::FIRSTKEY is not implemented" }
sub NEXTKEY { croak "DB_File::RECNOINFO::NEXTKEY is not implemented" }
sub EXISTS { croak "DB_File::BTREEINFO::EXISTS is not implemented" }
sub CLEAR { croak "DB_File::BTREEINFO::CLEAR is not implemented" }
package DB_File ;
use Carp;
#typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
$DB_BTREE = TIEHASH DB_File::BTREEINFO ;
$DB_HASH = TIEHASH DB_File::HASHINFO ;
$DB_RECNO = TIEHASH DB_File::RECNOINFO ;
require TieHash;
require Exporter;
require AutoLoader;
require DynaLoader;
@ISA = qw(TieHash Exporter DynaLoader);
@EXPORT = qw(
$DB_BTREE $DB_HASH $DB_RECNO
BTREEMAGIC
BTREEVERSION
DB_LOCK
DB_SHMEM
DB_TXN
HASHMAGIC
HASHVERSION
MAX_PAGE_NUMBER
MAX_PAGE_OFFSET
MAX_REC_NUMBER
RET_ERROR
RET_SPECIAL
RET_SUCCESS
R_CURSOR
R_DUP
R_FIRST
R_FIXEDLEN
R_IAFTER
R_IBEFORE
R_LAST
R_NEXT
R_NOKEY
R_NOOVERWRITE
R_PREV
R_RECNOSYNC
R_SETCURSOR
R_SNAPSHOT
__R_UNUSED
);
sub AUTOLOAD {
if (@_ > 1) {
$AutoLoader::AUTOLOAD = $AUTOLOAD;
goto &AutoLoader::AUTOLOAD;
}
local($constname);
($constname = $AUTOLOAD) =~ s/.*:://;
$val = constant($constname, @_ ? $_[0] : 0);
if ($! != 0) {
if ($! =~ /Invalid/) {
$AutoLoader::AUTOLOAD = $AUTOLOAD;
goto &AutoLoader::AUTOLOAD;
}
else {
($pack,$file,$line) = caller;
croak "Your vendor has not defined DB macro $constname, used at $file line $line.
";
}
}
eval "sub $AUTOLOAD { $val }";
goto &$AUTOLOAD;
}
@liblist = ();
@liblist = split ' ', $Config::Config{"DB_File_loadlibs"}
if defined $Config::Config{"DB_File_loadlibs"};
bootstrap DB_File @liblist;
# Preloaded methods go here. Autoload methods go after __END__, and are
# processed by the autosplit program.
1;
__END__
|
