I've written some clumsy code to copy a file to stdout (to a web page), and line-wrap it. Some lines in the file are purposefully very long. But we don't want to word-wrap (ala Text::wrap). No, I definitely want to line-wrap at column 80. There must be a more elegant way to do this that this: 

sub display_email
{
    my ($fn) = @_;

    print "<center>file <i>$fn</i></center>\n";
    if ( open( EMAIL, $fn ) ) {

        print "<hr width=600><br>\n<pre>";
        while( $_ =  <EMAIL> ) {
            if (        /^Message-Id:/
                 ||     /^Content-Type:/
                 ||     /^Content-Disposition:/
                 ||     /^Content-Transfer/
                 ||     /^X-[-\w]*:/
                 ||     /^Status: RO/
                 ||     /^Mime-Version:/ ) {
                next;
            }
            if (        /^\s/ && $rcvdflag ) {
                next;
            }
            if (        /^Received:/ ) {
                $rcvdflag = 1;
                next;
            }
            if (        /^[^ ]/ ) {
                $rcvdflag = 0;
            }
            if ( length($_) > 80 ) {
                chop;
                do {
                    print substr( $_, 0, 80 ) . "\n";
                    if (length($_) > 80) {
                        $_ = substr( $_, 80, length($_) - 80 );
                    }
                    else {
                        $_ = "";
                    }
                } while length($_);
            }
            else {
                print $_;
            }
        }
        print "</pre>\n";
        close( EMAIL );
    }
}

[download]
Also, in this sub, the code to not copy all the email header noise lines is also somewhat inelegant. Any sugestions? Criticisms?
Regards,
-allan

In reply to how do I line-wrap while copying to stdout? by ams

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