前一段时间,使用lxr 搭建了 android源码索引平台,具体搭建过程参考另一篇blog:LXR 索引Android 源码
平台在逐步完善中,界面简单可依赖,并加入了用户单点登录、用户权限设定、平台访问计数、搜索关键字高亮显示等功能。
来说说关键字在源码中高亮显示的具体实现,这部分的开发,修改了lxr 底层lib 库以及ident文件,思想是对在url 中加入关键字信息,在点击link 后,跳转到源码文件,可以在url中获得关键字,实现高亮,具体实现如下:
ident 文件的修改,有“# beaver add(update)的行”:
sub refexpand { my $templ = shift; my $ret = ''; my @refs = $index->symdeclarations($identifier, $releaseid); my $file_hits = 0; my $last_file; my $def; foreach my $def (@refs) { # my ($file, $line, $type, $rel) = @$def; my ($file, $line, $type, $rel, $i) = @$def; # beaver add $i = $identifier; # beaver add $file_hits++ if $file ne $last_file; $last_file = $file; $rel &&= "(member of " . idref($rel, "search-member", $rel) . ")"; $ret .= expandtemplate( $templ, ( file => sub { $file }, line => sub { $line }, type => sub { $type }, rel => sub { $rel }, [color=red]identifier => sub {$i},[/color] fileref => sub { fileref("$file, line $line", "search-decl", $file, $line, $i); # beaver update } ) ); # print("<span class=\"search-li1\"> $type_names{$type} in ". # fileref("$file, line $line", "search-decl", # $file, $line). # " $rel</span>\n"); } $declare_hits = "<div style='margin-left:30px'>" . scalar @refs . " declarations in $file_hits files.</div>"; return $ret; } sub usesexpand { my $templ = shift; my $ret = ''; my @uses = $index->symreferences($identifier, $releaseid); my $file_hits = 0; my $last_file; foreach my $ref (sort { $$a[0] cmp $$b[0] } @uses) { # my ($file, $line) = @$ref; my ($file, $line ,$i) = @$ref; #beaver add $i = $identifier; #beaver add $file_hits++ if $file ne $last_file; $last_file = $file; $ret .= expandtemplate( $templ, ( file => sub { $file }, line => sub { $line }, [color=red]identifier => sub {$i}, # beaver add[/color] fileref => sub { fileref("$file, line $line", "search-ref", $file, $line, $i); # beaver update } ) ); } $reference_hits = "<div style='margin-left:30px'>" . scalar @uses . " references in $file_hits files.</div>"; return $ret; } ...
修改 lxr/lib/LXR/Commom.pm文件中fileref 函数:
sub fileref { my ($desc, $css, $path, $line, $identifier, @args) = @_; # beaver update # jwz: URL-quote any special characters. $path =~ s|([^-a-zA-Z0-9.\@/_\r\n])|sprintf("%%%02X", ord($1))|ge; if ($line > 0 && length($line) < 3) { $line = ('0' x (3 - length($line))) . $line; } return ("<a class='$css' href=\"$config->{virtroot}/source$path" .(&urlargs(@args) ne '' ? &urlargs(@args)."&" : "?") . "i=$identifier" # beaver add . ($line > 0 ? "#$line" : "") . "\"\>$desc</a>"); ... }
修改以上两个文件,实现搜索的关键字在源码中高亮显示,截图如下所示,分别为输入关键字-》显示搜索结果-》点击list查看源码: