function _encode_html($node, $map = null)
{
static $d = 0;
static $mapper;
if ($mapper === null && $map !== null) {
$mapper = $map;
}
if (!isset($d) || $map !== null) {
$d = -1;
return _encode_html(array('html' => array('body' => $node)));
}
$indent = str_repeat("\t", $d);
// indent for pretty printing
if (is_string($node)) {
return print "\n{$indent}{$node}";
} elseif (is_array($node)) {
// descend into child nodes
$d++;
foreach ($node as $k => &$v) {
$a = '';
if (empty($k) || is_numeric($k)) {
$k = 'li';
}
// assume lists are LIs
if (is_callable($mapper)) {
$k = $mapper($k, $v, $a, $d);
}
// print node
print "\n{$indent}<{$k}{$a}>";
_encode_html($v);
// recurse
print "\n{$indent}</{$k}>";
}
$d--;
}
}
private function register_default_type_handlers()
{
// JSON
self::add_type_handler('application/json', function ($dom) {
$json = json_encode($dom);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new Exception('JSON encoding error #' . json_last_error(), 400);
}
print $json;
});
// JSONP
self::add_type_handler('application/js', function ($dom, $ctx, $map) {
if ($ctx === null || !array_key_exists('callback', $ctx->options)) {
throw new Exception('JSONP missing callback option', 400);
}
$callback = $ctx->options['callback'];
if (strlen($callback) === 0 || !preg_match('/^[a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*$/', $callback)) {
throw new Exception("Invalid JSONP callback name: {$callback}", 400);
}
$json = json_encode($dom);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new Exception('JSON encoding error in JSONP request - #' . json_last_error(), 400);
}
print "{$callback}({$json});";
});
// Built in HTML
self::add_type_handler('.*\\/htm.*', function ($dom) {
_encode_html($dom);
});
// Build in text (debug only)
if (PRESTO_DEBUG) {
self::add_type_handler('text/plain', function ($dom) {
print_r($dom);
});
}
}
