## ----------------------------------------------------------------------
## HTML aware string manipulation
+# Try to chop given string on a word boundary between position
+# $len and $len+$add_len. If there is no word boundary there,
+# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
+# (marking chopped part) would be longer than given string.
sub chop_str {
my $str = shift;
my $len = shift;
my $add_len = shift || 10;
+ my $where = shift || 'right'; # 'left' | 'center' | 'right'
# allow only $len chars, but don't cut a word if it would fit in $add_len
# if it doesn't fit, cut it if it's still longer than the dots we would add
- $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
- my $body = $1;
- my $tail = $2;
- if (length($tail) > 4) {
- $tail = " ...";
- $body =~ s/&[^;]*$//; # remove chopped character entities
+ # remove chopped character entities entirely
+
+ # when chopping in the middle, distribute $len into left and right part
+ # return early if chopping wouldn't make string shorter
+ if ($where eq 'center') {
+ return $str if ($len + 5 >= length($str)); # filler is length 5
+ $len = int($len/2);
+ } else {
+ return $str if ($len + 4 >= length($str)); # filler is length 4
+ }
+
+ # regexps: ending and beginning with word part up to $add_len
+ my $endre = qr/.{$len}\w{0,$add_len}/;
+ my $begre = qr/\w{0,$add_len}.{$len}/;
+
+ if ($where eq 'left') {
+ $str =~ m/^(.*?)($begre)$/;
+ my ($lead, $body) = ($1, $2);
+ if (length($lead) > 4) {
+ $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
+ $lead = " ...";
+ }
+ return "$lead$body";
+
+ } elsif ($where eq 'center') {
+ $str =~ m/^($endre)(.*)$/;
+ my ($left, $str) = ($1, $2);
+ $str =~ m/^(.*?)($begre)$/;
+ my ($mid, $right) = ($1, $2);
+ if (length($mid) > 5) {
+ $left =~ s/&[^;]*$//;
+ $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
+ $mid = " ... ";
+ }
+ return "$left$mid$right";
+
+ } else {
+ $str =~ m/^($endre)(.*)$/;
+ my $body = $1;
+ my $tail = $2;
+ if (length($tail) > 4) {
+ $body =~ s/&[^;]*$//;
+ $tail = "... ";
+ }
+ return "$body$tail";
}
- return "$body$tail";
}
# takes the same arguments as chop_str, but also wraps a <span> around the
# result with a title attribute if it does get chopped. Additionally, the
# string is HTML-escaped.
sub chop_and_escape_str {
- my $str = shift;
- my $len = shift;
- my $add_len = shift || 10;
+ my ($str) = @_;
- my $chopped = chop_str($str, $len, $add_len);
+ my $chopped = chop_str(@_);
if ($chopped eq $str) {
return esc_html($chopped);
} else {
print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
"<td><i>" . $author . "</i></td>\n" .
"<td>" .
- $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
- chop_and_escape_str($co{'title'}, 50) . "<br/>");
+ $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
+ -class => "list subject"},
+ chop_and_escape_str($co{'title'}, 50) . "<br/>");
my $comment = $co{'comment'};
foreach my $line (@$comment) {
if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
- my $lead = esc_html($1) || "";
- $lead = chop_str($lead, 30, 10);
- my $match = esc_html($2) || "";
- my $trail = esc_html($3) || "";
- $trail = chop_str($trail, 30, 10);
- my $text = "$lead<span class=\"match\">$match</span>$trail";
- print chop_str($text, 80, 5) . "<br/>\n";
+ my ($lead, $match, $trail) = ($1, $2, $3);
+ $match = chop_str($match, 70, 5, 'center');
+ my $contextlen = int((80 - length($match))/2);
+ $contextlen = 30 if ($contextlen > 30);
+ $lead = chop_str($lead, $contextlen, 10, 'left');
+ $trail = chop_str($trail, $contextlen, 10, 'right');
+
+ $lead = esc_html($lead);
+ $match = esc_html($match);
+ $trail = esc_html($trail);
+
+ print "$lead<span class=\"match\">$match</span>$trail<br />";
}
}
print "</td>\n" .