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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class rest_Core {
const OK = "200 OK";
const CREATED = "201 Created";
const ACCEPTED = "202 Accepted";
const NO_CONTENT = "204 No Content";
const RESET_CONTENT = "205 Reset Content";
const PARTIAL_CONTENT = "206 Partial Content";
const MOVED_PERMANENTLY = "301 Moved Permanently";
const FOUND = "302 Found";
const SEE_OTHER = "303 See Other";
const NOT_MODIFIED = "304 Not Modified";
const TEMPORARY_REDIRECT = "307 Temporary Redirect";
const BAD_REQUEST = "400 Bad Request";
const UNAUTHORIZED = "401 Unauthorized";
const FORBIDDEN = "403 Forbidden";
const NOT_FOUND = "404 Not Found";
const METHOD_NOT_ALLOWED = "405 Method Not Allowed";
const NOT_ACCEPTABLE = "406 Not Acceptable";
const CONFLICT = "409 Conflict";
const GONE = "410 Gone";
const LENGTH_REQUIRED = "411 Length Required";
const PRECONDITION_FAILED = "412 Precondition Failed";
const UNSUPPORTED_MEDIA_TYPE = "415 Unsupported Media Type";
const EXPECTATION_FAILED = "417 Expectation Failed";
const INTERNAL_SERVER_ERROR = "500 Internal Server Error";
const SERVICE_UNAVAILABLE = "503 Service Unavailable";
const XML = "application/xml";
const ATOM = "application/atom+xml";
const RSS = "application/rss+xml";
const JSON = "application/json";
const HTML = "text/html";
/**
* We're expecting to run in an environment that only supports GET/POST, so expect to tunnel
* PUT and DELETE through POST.
*
* Returns the HTTP request method taking into consideration PUT/DELETE tunneling.
* @return string HTTP request method
*/
static function request_method() {
if (request::method() == "get") {
return "get";
} else {
$input = Input::instance();
switch (strtolower($input->post("_method", $input->get("_method", request::method())))) {
case "put": return "put";
case "delete": return "delete";
default: return "post";
}
}
}
/**
* Choose an output format based on what the client prefers to accept.
* @return string "html", "xml" or "json"
*/
static function output_format() {
// Pick a format, but let it be overridden.
$input = Input::instance();
$fmt = $input->get(
"_format", $input->post(
"_format", request::preferred_accept(
array("xhtml", "html", "xml", "json"))));
// Some browsers (Chrome!) prefer xhtml over html, but we'll normalize this to html for now.
if ($fmt == "xhtml") {
$fmt = "html";
}
return $fmt;
}
/**
* Set HTTP response code.
* @param string Use one of the status code constants defined in this class.
*/
static function http_status($status_code) {
header("HTTP/1.1 " . $status_code);
}
/**
* Set HTTP Location header.
* @param string URL
*/
static function http_location($url) {
header("Location: " . $url);
}
/**
* Set HTTP Content-Type header.
* @param string content type
*/
static function http_content_type($type) {
header("Content-Type: " . $type);
}
}
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