lib/Archive/Zip/NewFileMember.pm

   1 package Archive::Zip::NewFileMember;
   2
   3 use strict;
   4 use vars qw( $VERSION @ISA );
   5
   6 BEGIN {
   7     $VERSION = '1.28';
   8     @ISA     = qw ( Archive::Zip::FileMember );
   9 }
  10
  11 use Archive::Zip qw(
  12   :CONSTANTS
  13   :ERROR_CODES
  14   :UTILITY_METHODS
  15 );
  16
  17 # Given a file name, set up for eventual writing.
  18 sub _newFromFileNamed {
  19     my $class    = shift;
  20     my $fileName = shift;    # local FS format
  21     my $newName  = shift;
  22     $newName = _asZipDirName($fileName) unless defined($newName);
  23     return undef unless ( stat($fileName) && -r _ && !-d _ );
  24     my $self = $class->new(@_);
  25     $self->{'fileName'} = $newName;
  26     $self->{'externalFileName'}  = $fileName;
  27     $self->{'compressionMethod'} = COMPRESSION_STORED;
  28     my @stat = stat(_);
  29     $self->{'compressedSize'} = $self->{'uncompressedSize'} = $stat[7];
  30     $self->desiredCompressionMethod(
  31         ( $self->compressedSize() > 0 )
  32         ? COMPRESSION_DEFLATED
  33         : COMPRESSION_STORED
  34     );
  35     $self->unixFileAttributes( $stat[2] );
  36     $self->setLastModFileDateTimeFromUnix( $stat[9] );
  37     $self->isTextFile( -T _ );
  38     return $self;
  39 }
  40
  41 sub rewindData {
  42     my $self = shift;
  43
  44     my $status = $self->SUPER::rewindData(@_);
  45     return $status unless $status == AZ_OK;
  46
  47     return AZ_IO_ERROR unless $self->fh();
  48     $self->fh()->clearerr();
  49     $self->fh()->seek( 0, IO::Seekable::SEEK_SET )
  50       or return _ioError( "rewinding", $self->externalFileName() );
  51     return AZ_OK;
  52 }
  53
  54 # Return bytes read. Note that first parameter is a ref to a buffer.
  55 # my $data;
  56 # my ( $bytesRead, $status) = $self->readRawChunk( \$data, $chunkSize );
  57 sub _readRawChunk {
  58     my ( $self, $dataRef, $chunkSize ) = @_;
  59     return ( 0, AZ_OK ) unless $chunkSize;
  60     my $bytesRead = $self->fh()->read( $$dataRef, $chunkSize )
  61       or return ( 0, _ioError("reading data") );
  62     return ( $bytesRead, AZ_OK );
  63 }
  64
  65 # If I already exist, extraction is a no-op.
  66 sub extractToFileNamed {
  67     my $self = shift;
  68     my $name = shift;    # local FS name
  69     if ( File::Spec->rel2abs($name) eq
  70         File::Spec->rel2abs( $self->externalFileName() ) and -r $name )
  71     {
  72         return AZ_OK;
  73     }
  74     else {
  75         return $self->SUPER::extractToFileNamed( $name, @_ );
  76     }
  77 }
  78
  79 1;