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72 lines
1.9 KiB
PHTML
72 lines
1.9 KiB
PHTML
3 years ago
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<?php
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/**
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* Created by PhpStorm.
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* User: yp-tc-7176
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* Date: 17/7/16
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* Time: 20:28
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*/
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require_once("StringBuilder.php");
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abstract class HttpUtils
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{
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/**
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* Normalize a string for use in url path. The algorithm is:
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* <p>
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* <p>
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* <ol>
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* <li>Normalize the string</li>
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* <li>replace all "%2F" with "/"</li>
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* <li>replace all "//" with "/%2F"</li>
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* </ol>
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* <p>
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* <p>
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* object key can contain arbitrary characters, which may result double slash in the url path. Apache http
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* client will replace "//" in the path with a single '/', which makes the object key incorrect. Thus we replace
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* "//" with "/%2F" here.
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*
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* @param path the path string to normalize.
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* @return the normalized path string.
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* @see #normalize(String)
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*/
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public static function normalizePath($path)
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{
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return str_replace("%2F", "/",HttpUtils::normalize($path));
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}
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/**
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* @param $value
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* @return string
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*/
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public static function normalize($value)
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{
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return rawurlencode($value);
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}
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public static function startsWith($haystack, $needle) {
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// search backwards starting from haystack length characters from the end
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return $needle === "" || strrpos($haystack, $needle, -strlen($haystack)) !== FALSE;
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}
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public static function endsWith($haystack, $needle) {
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// search forward starting from end minus needle length characters
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return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== FALSE);
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}
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/**
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* @param $path
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* @return string
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*/
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public static function getCanonicalURIPath($path)
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{
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if ($path == null) {
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return "/";
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} else if (HttpUtils::startsWith($path,'/')) {
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return HttpUtils::normalizePath($path);
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} else {
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return "/" + HttpUtils::normalizePath($path);
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}
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}
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}
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