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C:/Perl/site/lib/Archive/Zip/_[ Writable ]

File:C:/Perl/site/lib/Archive/Zip/MockFileHandle.pm

# Output file handle that calls a custom write routine
# Ned Konz, March 2000
# This is provided to help with writing zip files
# when you have to process them a chunk at a time.
#
# See the examples.
#
# $Revision: 1.4 $

use strict;
package Archive::Zip::MockFileHandle;

sub new
{
	my $class = shift || __PACKAGE__;
	$class = ref($class) || $class;
	my $self = bless( { 
		'position' => 0, 
		'size' => 0
	}, $class );
	return $self;
}

sub eof
{
	my $self = shift;
	return $self->{'position'} >= $self->{'size'};
}

# Copy given buffer to me
sub print
{
	my $self = shift;
	my $bytes = join('', @_);
	my $bytesWritten = $self->writeHook($bytes);
	if ($self->{'position'} + $bytesWritten > $self->{'size'})
	{
		$self->{'size'} = $self->{'position'} + $bytesWritten
	}
	$self->{'position'} += $bytesWritten;
	return $bytesWritten;
}

# Called on each write.
# Override in subclasses.
# Return number of bytes written (0 on error).
sub writeHook
{
	my $self = shift;
	my $bytes = shift;
	return length($bytes);
}

sub binmode { 1 } 

sub close { 1 } 

sub clearerr { 1 } 

# I'm write-only!
sub read { 0 } 

sub tell { return shift->{'position'} }

sub opened { 1 }

# vim: ts=4 sw=4
1;

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