File Coverage

blib/lib/PerlIO/via/UnComment.pm

Criterion	Covered	Total	%
statement	12	12	100.0
branch	3	4	75.0
condition	2	2	100.0
subroutine	4	4	100.0
pod	0	2	0.0
total	21	24	87.5

package PerlIO::via::UnComment;

$VERSION= '0.05';

# be as strict as possible
use strict;

# satisfy -require-
1;

#-----------------------------------------------------------------------
#
# Standard Perl features
#
#-----------------------------------------------------------------------
#  IN: 1 class to bless with
#      2 mode string (ignored)
#      3 file handle of PerlIO layer below (ignored)
# OUT: 1 blessed object

sub PUSHED {

    # return an object
    return bless \*PUSHED, $_[0];
} #PUSHED

#-----------------------------------------------------------------------
#  IN: 1 instantiated object
#      2 handle to read from
# OUT: 1 processed string (if any)

sub FILL {

    # return first line that isn't a comment
    local( $_ );
    m/^#/ or return $_ while defined( $_= readline( $_[1] ) );

    return undef;
} #FILL

#-----------------------------------------------------------------------
#  IN: 1 instantiated object
#      2 buffer to be written
#      3 handle to write to
# OUT: 1 number of bytes written or -1 if failure

sub WRITE {

    # print all lines that don't start with #
  LINE:
    foreach ( split( m#(?<=$/)#, $_[1] ) ) {
	next LINE if m/^#/;

        return -1 if !print {$_[2]} $_;
    }

    return length( $_[1] );
} #WRITE

#-----------------------------------------------------------------------

__END__