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files >> //proc/self/root/usr/share/perl5/vendor_perl/Archive/Zip/BufferedFileHandle.pm
package Archive::Zip::BufferedFileHandle; # File handle that uses a string internally and can seek # This is given as a demo for getting a zip file written # to a string. # I probably should just use IO::Scalar instead. # Ned Konz, March 2000 use strict; use IO::File; use Carp; use vars qw{$VERSION}; BEGIN { $VERSION = '1.60'; $VERSION = eval $VERSION; } sub new { my $class = shift || __PACKAGE__; $class = ref($class) || $class; my $self = bless( { content => '', position => 0, size => 0 }, $class ); return $self; } # Utility method to read entire file sub readFromFile { my $self = shift; my $fileName = shift; my $fh = IO::File->new($fileName, "r"); CORE::binmode($fh); if (!$fh) { Carp::carp("Can't open $fileName: $!\n"); return undef; } local $/ = undef; $self->{content} = <$fh>; $self->{size} = length($self->{content}); return $self; } sub contents { my $self = shift; if (@_) { $self->{content} = shift; $self->{size} = length($self->{content}); } return $self->{content}; } sub binmode { 1 } sub close { 1 } sub opened { 1 } sub eof { my $self = shift; return $self->{position} >= $self->{size}; } sub seek { my $self = shift; my $pos = shift; my $whence = shift; # SEEK_SET if ($whence == 0) { $self->{position} = $pos; } # SEEK_CUR elsif ($whence == 1) { $self->{position} += $pos; } # SEEK_END elsif ($whence == 2) { $self->{position} = $self->{size} + $pos; } else { return 0; } return 1; } sub tell { return shift->{position}; } # Copy my data to given buffer sub read { my $self = shift; my $buf = \($_[0]); shift; my $len = shift; my $offset = shift || 0; $$buf = '' if not defined($$buf); my $bytesRead = ($self->{position} + $len > $self->{size}) ? ($self->{size} - $self->{position}) : $len; substr($$buf, $offset, $bytesRead) = substr($self->{content}, $self->{position}, $bytesRead); $self->{position} += $bytesRead; return $bytesRead; } # Copy given buffer to me sub write { my $self = shift; my $buf = \($_[0]); shift; my $len = shift; my $offset = shift || 0; $$buf = '' if not defined($$buf); my $bufLen = length($$buf); my $bytesWritten = ($offset + $len > $bufLen) ? $bufLen - $offset : $len; substr($self->{content}, $self->{position}, $bytesWritten) = substr($$buf, $offset, $bytesWritten); $self->{size} = length($self->{content}); return $bytesWritten; } sub clearerr() { 1 } 1;
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