+sub mime_quote_text {
+ $main::lxdebug->enter_sub();
+
+ my ($self, $text, $chars_left) = @_;
+
+ my $q_start = "=?$self->{charset}?Q?";
+ my $l_start = length($q_start);
+
+ my $new_text = "$q_start";
+ $chars_left -= $l_start;
+
+ for (my $i = 0; $i < length($text); $i++) {
+ my $char = ord(substr($text, $i, 1));
+
+ if (($char < 32) || ($char > 127) ||
+ ($char == ord('?')) || ($char == ord('_'))) {
+ if ($chars_left < 5) {
+ $new_text .= "?=\n $q_start";
+ $chars_left = 75 - $l_start;
+ }
+
+ $new_text .= sprintf("=%02X", $char);
+ $chars_left -= 3;
+
+ } else {
+ $char = ord('_') if ($char == ord(' '));
+ if ($chars_left < 5) {
+ $new_text .= "?=\n $q_start";
+ $chars_left = 75 - $l_start;
+ }
+
+ $new_text .= chr($char);
+ $chars_left--;
+ }
+ }
+
+ $new_text .= "?=";
+
+ $main::lxdebug->leave_sub();
+
+ return $new_text;
+}
+