1 files changed, 106 insertions, 0 deletions
diff --git a/lib/Text/Wrap.pm b/lib/Text/Wrap.pm
new file mode 100644
index 0000000..72574f6
--- /dev/null
+++ b/lib/Text/Wrap.pm
@@ -0,0 +1,106 @@
+package Text::Wrap;
+
+require Exporter;
+
+@ISA = qw(Exporter);
+@EXPORT = qw(wrap fill);
+@EXPORT_OK = qw($columns $break $huge);
+
+$VERSION = 2001.09291;
+
+use vars qw($VERSION $columns $debug $break $huge $unexpand $tabstop
+	$separator);
+use strict;
+
+BEGIN	{
+	$columns = 76;  # <= screen width
+	$debug = 0;
+	$break = '\s';
+	$huge = 'wrap'; # alternatively: 'die' or 'overflow'
+	$unexpand = 1;
+	$tabstop = 8;
+	$separator = "\n";
+}
+
+use Text::Tabs qw(expand unexpand);
+
+sub wrap
+{
+	my ($ip, $xp, @t) = @_;
+
+	local($Text::Tabs::tabstop) = $tabstop;
+	my $r = "";
+	my $tail = pop(@t);
+	my $t = expand(join("", (map { /\s+\z/ ? ( $_ ) : ($_, ' ') } @t), $tail));
+	my $lead = $ip;
+	my $ll = $columns - length(expand($ip)) - 1;
+	$ll = 0 if $ll < 0;
+	my $nll = $columns - length(expand($xp)) - 1;
+	my $nl = "";
+	my $remainder = "";
+
+	use re 'taint';
+
+	pos($t) = 0;
+	while ($t !~ /\G\s*\Z/gc) {
+		if ($t =~ /\G([^\n]{0,$ll})($break|\z)/xmgc) {
+			$r .= $unexpand 
+				? unexpand($nl . $lead . $1)
+				: $nl . $lead . $1;
+			$remainder = $2;
+		} elsif ($huge eq 'wrap' && $t =~ /\G([^\n]{$ll})/gc) {
+			$r .= $unexpand 
+				? unexpand($nl . $lead . $1)
+				: $nl . $lead . $1;
+			$remainder = $separator;
+		} elsif ($huge eq 'overflow' && $t =~ /\G([^\n]*?)($break|\z)/xmgc) {
+			$r .= $unexpand 
+				? unexpand($nl . $lead . $1)
+				: $nl . $lead . $1;
+			$remainder = $2;
+		} elsif ($huge eq 'die') {
+			die "couldn't wrap '$t'";
+		} else {
+			die "This shouldn't happen";
+		}
+			
+		$lead = $xp;
+		$ll = $nll;
+		$nl = $separator;
+	}
+	$r .= $remainder;
+
+	print "-----------$r---------\n" if $debug;
+
+	print "Finish up with '$lead'\n" if $debug;
+
+	$r .= $lead . substr($t, pos($t), length($t)-pos($t))
+		if pos($t) ne length($t);
+
+	print "-----------$r---------\n" if $debug;;
+
+	return $r;
+}
+
+sub fill 
+{
+	my ($ip, $xp, @raw) = @_;
+	my @para;
+	my $pp;
+
+	for $pp (split(/\n\s+/, join("\n",@raw))) {
+		$pp =~ s/\s+/ /g;
+		my $x = wrap($ip, $xp, $pp);
+		push(@para, $x);
+	}
+
+	# if paragraph_indent is the same as line_indent, 
+	# separate paragraphs with blank lines
+
+	my $ps = ($ip eq $xp) ? "\n\n" : "\n";
+	return join ($ps, @para);
+}
+
+1;
+__END__
+