+ cease(1, @_);
+}
+
+# determine the colour of the line
+sub setattr
+{
+ if ($has_colors) {
+ foreach my $ref (@colors) {
+ if ($_[0] =~ m{$$ref[0]}) {
+ $top->attrset($$ref[1]);
+ last;
+ }
+ }
+ }
+}
+
+# display the top screen
+sub show_screen
+{
+ if ($spos == @shistory - 1) {
+
+ # if we really are scrolling thru at the end of the history
+ my $line = $shistory[-1];
+ $top->addstr("\n") if $spos > 0;
+ setattr($line);
+ $top->addstr($line);
+ $top->attrset(COLOR_PAIR(0)) if $has_colors;
+ $spos = @shistory;
+
+ } else {
+
+ # anywhere else
+ my $p = $spos - $pages;
+ my $i;
+ $p = 0 if $p < 0;
+
+ $top->move(0, 0);
+ $top->attrset(COLOR_PAIR(0)) if $has_colors;
+ $top->clrtobot();
+ for ($i = 0; $i < $pages && $p < @shistory; $i++, $p++) {
+ my $line = $shistory[$p];
+ $line = substr($line, 0, COLS()) if length $line > COLS();
+ $top->move($i, 0);
+ setattr($line);
+ $top->addstr($line);
+ $top->attrset(COLOR_PAIR(0)) if $has_colors;
+ }
+ $spos = $p;
+ }
+ $top->refresh();
+}
+
+# add a line to the end of the top screen
+sub addtotop
+{
+ my $inbuf = shift;
+ push @shistory, $inbuf;
+ shift @shistory if @shistory > $maxshist;
+ show_screen();