package Tie::StdHandle; use strict; use Tie::Handle; our @ISA = 'Tie::Handle'; our $VERSION = '4.5'; =head1 NAME Tie::StdHandle - base class definitions for tied handles =head1 SYNOPSIS package NewHandle; require Tie::Handle; @ISA = qw(Tie::Handle); sub READ { ... } # Provide a needed method sub TIEHANDLE { ... } # Overrides inherited method package main; tie *FH, 'NewHandle'; =head1 DESCRIPTION The B package provide most methods for file handles described in L (the exceptions are C and C). It causes tied file handles to behave exactly like standard file handles and allow for selective overwriting of methods. =cut sub TIEHANDLE { my $class = shift; my $fh = \do { local *HANDLE}; bless $fh,$class; $fh->OPEN(@_) if (@_); return $fh; } sub EOF { eof($_[0]) } sub TELL { tell($_[0]) } sub FILENO { fileno($_[0]) } sub SEEK { seek($_[0],$_[1],$_[2]) } sub CLOSE { close($_[0]) } sub BINMODE { binmode($_[0]) } sub OPEN { $_[0]->CLOSE if defined($_[0]->FILENO); @_ == 2 ? open($_[0], $_[1]) : open($_[0], $_[1], $_[2]); } sub READ { &CORE::read(shift, \shift, @_) } sub READLINE { my $fh = $_[0]; <$fh> } sub GETC { getc($_[0]) } sub WRITE { my $fh = $_[0]; local $\; # don't print any line terminator print $fh substr($_[1], $_[3], $_[2]); } 1;