//
// back plugin
// Allow specifying back link by page name and anchor, or
// by relative or site-abusolute path
define('PLUGIN_BACK_ALLOW_PAGELINK', PKWK_SAFE_MODE); // FALSE(Compat), TRUE
// Allow JavaScript (Compat)
define('PLUGIN_BACK_ALLOW_JAVASCRIPT', TRUE); // TRUE(Compat), FALSE
// ----
define('PLUGIN_BACK_USAGE', '#back([text],[center|left|right][,0(no hr)[,Page-or-URI-to-back]])');
function plugin_back_convert()
{
global $_msg_back_word, $script;
if (func_num_args() > 4) return PLUGIN_BACK_USAGE;
list($word, $align, $hr, $href) = array_pad(func_get_args(), 4, '');
$word = trim($word);
$word = ($word == '') ? $_msg_back_word : htmlsc($word);
$align = strtolower(trim($align));
switch($align){
case '' : $align = 'center';
/*FALLTHROUGH*/
case 'center': /*FALLTHROUGH*/
case 'left' : /*FALLTHROUGH*/
case 'right' : break;
default : return PLUGIN_BACK_USAGE;
}
$hr = (trim($hr) != '0') ? '
' . "\n" : '';
$link = TRUE;
$href = trim($href);
if ($href != '') {
if (PLUGIN_BACK_ALLOW_PAGELINK) {
if (is_url($href)) {
$href = rawurlencode($href);
} else {
$array = anchor_explode($href);
$array[0] = rawurlencode($array[0]);
$array[1] = ($array[1] != '') ? '#' . rawurlencode($array[1]) : '';
$href = $script . '?' . $array[0] . $array[1];
$link = is_page($array[0]);
}
} else {
$href = rawurlencode($href);
}
} else {
if (! PLUGIN_BACK_ALLOW_JAVASCRIPT)
return PLUGIN_BACK_USAGE . ': Set a page name or an URI';
$href = 'javascript:history.go(-1)';
}
if($link){
// Normal link
return $hr . '' . "\n";
} else {
// Dangling link
return $hr . '' . "\n";
}
}