+
+ if (defined $opts{anchor}) {
+ $bestlink.="#".$opts{anchor};
+ }
+
+ my @attrs;
+ if (defined $opts{rel}) {
+ push @attrs, ' rel="'.$opts{rel}.'"';
+ }
+ if (defined $opts{class}) {
+ push @attrs, ' class="'.$opts{class}.'"';
+ }
+
+ return "<a href=\"$bestlink\"@attrs>$linktext</a>";
+} #}}}
+
+sub openiduser ($) { #{{{
+ my $user=shift;
+
+ if ($user =~ m!^https?://! &&
+ eval q{use Net::OpenID::VerifiedIdentity; 1} && !$@) {
+ my $oid=Net::OpenID::VerifiedIdentity->new(identity => $user);
+ my $display=$oid->display;
+ # Convert "user.somehost.com" to "user [somehost.com]".
+ if ($display !~ /\[/) {
+ $display=~s/^(.*?)\.([^.]+\.[a-z]+)$/$1 [$2]/;
+ }
+ # Convert "http://somehost.com/user" to "user [somehost.com]".
+ if ($display !~ /\[/) {
+ $display=~s/^https?:\/\/(.+)\/([^\/]+)$/$2 [$1]/;
+ }
+ $display=~s!^https?://!!; # make sure this is removed
+ eval q{use CGI 'escapeHTML'};
+ error($@) if $@;
+ return escapeHTML($display);
+ }
+ return;
+}
+
+sub userlink ($) { #{{{
+ my $user=shift;
+
+ my $oiduser=openiduser($user);
+ if (defined $oiduser) {
+ return "<a href=\"$user\">$oiduser</a>";
+ }
+ else {
+ return htmllink("", "", escapeHTML(
+ length $config{userdir} ? $config{userdir}."/".$user : $user
+ ), noimageinline => 1);
+ }
+} #}}}
+
+sub htmlize ($$$) { #{{{
+ my $page=shift;
+ my $type=shift;
+ my $content=shift;
+
+ my $oneline = $content !~ /\n/;
+
+ if (exists $hooks{htmlize}{$type}) {
+ $content=$hooks{htmlize}{$type}{call}->(
+ page => $page,
+ content => $content,
+ );
+ }
+ else {
+ error("htmlization of $type not supported");
+ }
+
+ run_hooks(sanitize => sub {
+ $content=shift->(
+ page => $page,
+ content => $content,
+ );
+ });
+
+ if ($oneline) {
+ # hack to get rid of enclosing junk added by markdown
+ # and other htmlizers
+ $content=~s/^<p>//i;
+ $content=~s/<\/p>$//i;
+ chomp $content;
+ }
+
+ return $content;
+} #}}}
+
+sub linkify ($$$) { #{{{
+ my $lpage=shift; # the page containing the links
+ my $page=shift; # the page the link will end up on (different for inline)
+ my $content=shift;
+
+ $content =~ s{(\\?)$config{wiki_link_regexp}}{
+ defined $2
+ ? ( $1
+ ? "[[$2|$3".($4 ? "#$4" : "")."]]"
+ : htmllink($lpage, $page, linkpage($3),
+ anchor => $4, linktext => pagetitle($2)))
+ : ( $1
+ ? "[[$3".($4 ? "#$4" : "")."]]"
+ : htmllink($lpage, $page, linkpage($3),
+ anchor => $4))
+ }eg;
+
+ return $content;
+} #}}}
+
+my %preprocessing;
+our $preprocess_preview=0;
+sub preprocess ($$$;$$) { #{{{
+ my $page=shift; # the page the data comes from
+ my $destpage=shift; # the page the data will appear in (different for inline)
+ my $content=shift;
+ my $scan=shift;
+ my $preview=shift;
+
+ # Using local because it needs to be set within any nested calls
+ # of this function.
+ local $preprocess_preview=$preview if defined $preview;
+
+ my $handle=sub {
+ my $escape=shift;
+ my $command=shift;
+ my $params=shift;
+ if (length $escape) {
+ return "[[$command $params]]";
+ }
+ elsif (exists $hooks{preprocess}{$command}) {
+ return "" if $scan && ! $hooks{preprocess}{$command}{scan};
+ # Note: preserve order of params, some plugins may
+ # consider it significant.
+ my @params;
+ while ($params =~ m{
+ (?:([-\w]+)=)? # 1: named parameter key?
+ (?:
+ """(.*?)""" # 2: triple-quoted value
+ |
+ "([^"]+)" # 3: single-quoted value
+ |
+ (\S+) # 4: unquoted value
+ )
+ (?:\s+|$) # delimiter to next param
+ }sgx) {
+ my $key=$1;
+ my $val;
+ if (defined $2) {
+ $val=$2;
+ $val=~s/\r\n/\n/mg;
+ $val=~s/^\n+//g;
+ $val=~s/\n+$//g;
+ }
+ elsif (defined $3) {
+ $val=$3;
+ }
+ elsif (defined $4) {
+ $val=$4;
+ }
+
+ if (defined $key) {
+ push @params, $key, $val;
+ }
+ else {
+ push @params, $val, '';
+ }
+ }
+ if ($preprocessing{$page}++ > 3) {
+ # Avoid loops of preprocessed pages preprocessing
+ # other pages that preprocess them, etc.
+ #translators: The first parameter is a
+ #translators: preprocessor directive name,
+ #translators: the second a page name, the
+ #translators: third a number.
+ return "[[".sprintf(gettext("%s preprocessing loop detected on %s at depth %i"),
+ $command, $page, $preprocessing{$page}).
+ "]]";
+ }
+ my $ret;
+ if (! $scan) {
+ $ret=$hooks{preprocess}{$command}{call}->(
+ @params,
+ page => $page,
+ destpage => $destpage,
+ preview => $preprocess_preview,
+ );
+ }
+ else {
+ # use void context during scan pass
+ $hooks{preprocess}{$command}{call}->(
+ @params,
+ page => $page,
+ destpage => $destpage,
+ preview => $preprocess_preview,
+ );
+ $ret="";
+ }
+ $preprocessing{$page}--;
+ return $ret;
+ }
+ else {
+ return "[[$command $params]]";
+ }
+ };
+
+ $content =~ s{
+ (\\?) # 1: escape?
+ \[\[ # directive open
+ ([-\w]+) # 2: command
+ \s+
+ ( # 3: the parameters..
+ (?:
+ (?:[-\w]+=)? # named parameter key?
+ (?:
+ """.*?""" # triple-quoted value
+ |
+ "[^"]+" # single-quoted value
+ |
+ [^\s\]]+ # unquoted value
+ )
+ \s* # whitespace or end
+ # of directive
+ )
+ *) # 0 or more parameters
+ \]\] # directive closed
+ }{$handle->($1, $2, $3)}sexg;
+ return $content;
+} #}}}
+
+sub filter ($$$) { #{{{
+ my $page=shift;
+ my $destpage=shift;
+ my $content=shift;
+
+ run_hooks(filter => sub {
+ $content=shift->(page => $page, destpage => $destpage,
+ content => $content);
+ });
+
+ return $content;