Editing Template:Bots/doc (section)

===Example implementations===
====PHP====
<syntaxhighlight lang="php">
function allowBots( $text, $user ) {
    if (preg_match('/\{\{(nobots|bots\|allow=none|bots\|deny=all|bots\|optout=all|bots\|deny=.*?'.preg_quote($user,'/').'.*?)}}/iS',$text))
        return false;
    if (preg_match('/\{\{(bots\|allow=all|bots\|allow=.*?'.preg_quote($user,'/').'.*?)}}/iS', $text))
        return true;
    if (preg_match('/\{\{(bots\|allow=.*?)}}/iS', $text))
        return false;
    return true;
}
</syntaxhighlight>

====Perl====
<syntaxhighlight lang="perl">
sub allow_bots {
    my($text, $user, $opt) = @_;
    return 0 if $text =~ /{{[nN]obots}}/;
    return 1 if $text =~ /{{[bB]ots}}/;
    if($text =~ /\{\{[bB]ots\s*\|\s*allow\s*=\s*(.*?)\s*}}/s){
        return 1 if $1 eq 'all';
        return 0 if $1 eq 'none';
        my @bots = split(/\s*,\s*/, $1);
        return (grep $_ eq $user, @bots) ? 1 : 0;
    }
    if($text =~ /\{\{[bB]ots\s*\|\s*deny\s*=\s*(.*?)\s*}}/s){
        return 0 if $1 eq 'all';
        return 1 if $1 eq 'none';
        my @bots = split(/\s*,\s*/, $1);
        return (grep $_ eq $user, @bots) ? 0 : 1;
    }
    if(defined($opt) && $text =~ /\{\{[bB]ots\s*\|\s*optout\s*=\s*(.*?)\s*}}/s){
        return 0 if $1 eq 'all';
        my @opt = split(/\s*,\s*/, $1);
        return (grep $_ eq $opt, @opt) ? 0 : 1;
    }
    return 1;
}
</syntaxhighlight>

====VB.NET====
<syntaxhighlight lang="vbnet">
Public Shared Function AllowBots(ByVal text As String, ByVal user As String) As Boolean
    Return Not Regex.IsMatch(text, "\{\{(nobots|bots\|(allow=none|deny=(?!none).*(" & user.Normalize() & "|all)|optout=all))\}\}", RegexOptions.IgnoreCase)
End Function
</syntaxhighlight>

====C#====
<syntaxhighlight lang="csharp">
public static bool AllowBots(string text, string user)
{
    return !Regex.IsMatch(text, @"\{\{(nobots|bots\|(allow=none|deny=(?!none).*(" + user.Normalize() + @".*|all)|optout=all))\}\}", RegexOptions.IgnoreCase);
}
</syntaxhighlight>

====Java====
<syntaxhighlight lang="java">
public static boolean allowBots(String text, String user)
{
      return !text.matches("(?si).*\\{\\{(nobots|bots\\|(allow=none|deny=([^\\}]*?" + user + "[^\\}]*?|all)|optout=all))\\}\\}.*");
}
</syntaxhighlight>

====JavaScript====
<syntaxhighlight lang="javascript">
function allowBots(text, user){
  if (!new RegExp("\\{\\{\\s*(nobots|bots[^}]*)\\s*\\}\\}", "i").test(text)) return true;
  return (new RegExp("\\{\\{\\s*bots\\s*\\|\\s*deny\\s*=\\s*([^}]*,\\s*)*" + user.replace(/([\(\)\*\+\?\.\-\:\!\=\/\^\$])/g, "\\$1") + "\\s*(?=[,\\}])[^}]*\\s*\\}\\}", "i").test(text)) ? false : new RegExp("\\{\\{\\s*((?!nobots)|bots(\\s*\\|\\s*allow\\s*=\\s*((?!none)|([^}]*,\\s*)*" + user.replace(/([\(\)\*\+\?\.\-\:\!\=\/\^\$])/g, "\\$1") + "\\s*(?=[,\\}])[^}]*|all))?|bots\\s*\\|\\s*deny\\s*=\\s*(?!all)[^}]*|bots\\s*\\|\\s*optout=(?!all)[^}]*)\\s*\\}\\}", "i").test(text);
}
</syntaxhighlight>

====Python====
This code assumes that the [http://pypi.python.org/pypi/mwparserfromhell/ mwparserfromhell] library was installed and imported in the current script.
<syntaxhighlight lang="python">
def allow_bots(text, user):
	user = user.lower().strip()
	text = mwparserfromhell.parse(text)
	for tl in text.filter_templates():
		if tl.name.matches(['bots', 'nobots']):
			break
	else:
		return True
	for param in tl.params:
		bots = [x.lower().strip() for x in param.value.split(",")]
		if param.name == 'allow':
			if ''.join(bots) == 'none': return False
			for bot in bots:
				if bot in (user, 'all'):
					return True
		elif param.name == 'deny':
			if ''.join(bots) == 'none': return True
			for bot in bots:
				if bot in (user, 'all'):
					return False
	if (tl.name.matches('nobots') and len(tl.params) == 0):
		return False
	return True
</syntaxhighlight>