"{{ to }}",
{% endfor %}
);
$rewrites = array(
{% for from, to in rewrites.items() %}
"{{ from }}" => "{{ to }}",
{% endfor %}
);
$gone = array(
{% for gone in gones %}
"{{ gone }}" => true,
{% endfor %}
);
$gone_re = array(
{% for gone in gone_re %}
"{{ gone }}",
{% endfor %}
);
function redirect_to($uri) {
header('HTTP/1.1 301 Moved Permanently');
if (preg_match("/^https?/", $uri))
$target = $uri;
else
$target = '{{ site.url }}/'. trim($uri, '/') . '/';
header("Location: ". $target);
exit;
}
function gone($uri) {
header('HTTP/1.1 410 Gone');
die('
Gone
This content was deleted.
'.$uri.'
');
}
function notfound($uri) {
header('HTTP/1.0 404 Not Found');
die('
Not found
This was not found.
Please search for it instead.
'.$uri.'
');
}
function maybe_redirect($uri) {
if (file_exists("./$uri/index.html")) {
redirect_to($uri);
}
}
$uri = filter_var($_SERVER['REQUEST_URI'], FILTER_SANITIZE_URL);
$uri = str_replace('../', '', $uri);
$uri = str_replace('/feed/', '', $uri);
$uri = str_replace('/atom/', '', $uri);
$uri = trim($uri, '/');
foreach ($gone_re as $pattern) {
if (preg_match(sprintf('/%s/', $pattern), $uri)) {
gone($uri);
}
}
foreach ($rewrites as $pattern => $target) {
$maybe = preg_match(sprintf('/%s/i', $pattern), $uri, $matches);
if ($maybe) {
$target = str_replace('$1', $matches[1], $target);
redirect_to($target);
}
}
if (isset($gone[$uri])) {
gone($uri);
}
elseif (isset($redirects[$uri])) {
redirect_to($redirects[$uri]);
}
elseif (strstr($uri, '_')) {
maybe_redirect(str_replace('_', '-', $uri));
}
else {
notfound($uri);
}