Use index based string access for substr with length of 1

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

3 files changed, 8 insertions, 12 deletions

diff --git a/lib/private/Files/Filesystem.php b/lib/private/Files/Filesystem.php
index caf23afba11..95703eab925 100644
--- a/lib/private/Files/Filesystem.php
+++ b/lib/private/Files/Filesystem.php
@@ -839,8 +839,8 @@ class Filesystem {
 		$path = preg_replace('#/{2,}#', '/', $path);
 
 		//remove trailing slash
-		if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
-			$path = substr($path, 0, -1);
+		if ($stripTrailingSlash and strlen($path) > 1) {
+			$path = rtrim($path, '/');
 		}
 
 		// remove trailing '/.'
diff --git a/lib/private/Files/Storage/DAV.php b/lib/private/Files/Storage/DAV.php
index 43347aa0b8f..f9c6175308c 100644
--- a/lib/private/Files/Storage/DAV.php
+++ b/lib/private/Files/Storage/DAV.php
@@ -118,13 +118,9 @@ class DAV extends Common {
 					$this->certPath = $certPath;
 				}
 			}
-			$this->root = isset($params['root']) ? $params['root'] : '/';
-			if (!$this->root || $this->root[0] != '/') {
-				$this->root = '/' . $this->root;
-			}
-			if (substr($this->root, -1, 1) != '/') {
-				$this->root .= '/';
-			}
+			$this->root = $params['root'] ?? '/';
+			$this->root = '/' . ltrim($this->root, '/');
+			$this->root = rtrim($this->root, '/') . '/';
 		} else {
 			throw new \Exception('Invalid webdav storage configuration');
 		}
diff --git a/lib/private/Files/View.php b/lib/private/Files/View.php
index fb0b116666e..1553444e05d 100644
--- a/lib/private/Files/View.php
+++ b/lib/private/Files/View.php
@@ -698,7 +698,7 @@ class View {
 			// do not allow deleting the root
 			return false;
 		}
-		$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
+		$postFix = (substr($path, -1) === '/') ? '/' : '';
 		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
 		$mount = Filesystem::getMountManager()->find($absolutePath . $postFix);
 		if ($mount and $mount->getInternalPath($absolutePath) === '') {
@@ -1067,7 +1067,7 @@ class View {
 	 * @return bool|null|string
 	 */
 	public function hash($type, $path, $raw = false) {
-		$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
+		$postFix = (substr($path, -1) === '/') ? '/' : '';
 		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
 		if (Filesystem::isValidPath($path)) {
 			$path = $this->getRelativePath($absolutePath);
@@ -1119,7 +1119,7 @@ class View {
 	 * \OC\Files\Storage\Storage for delegation to a storage backend for execution
 	 */
 	private function basicOperation($operation, $path, $hooks = [], $extraParam = null) {
-		$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
+		$postFix = (substr($path, -1) === '/') ? '/' : '';
 		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
 		if (Filesystem::isValidPath($path)
 			and !Filesystem::isFileBlacklisted($path)