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<?php |
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namespace phootwork\file; |
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use \DateTime; |
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use phootwork\file\exception\FileException; |
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use phootwork\lang\Text; |
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trait FileOperationTrait { |
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protected $pathname; |
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/** |
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* Static instantiator |
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* |
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* @param string $pathname |
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* @return static |
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*/ |
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public static function create($pathname) { |
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return new static($pathname); |
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} |
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protected function init($pathname) { |
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$this->pathname = ''.$pathname; // "cast" to string |
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} |
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/** |
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* Returns the file extensions |
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* |
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* @return string the file extension |
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*/ |
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public function getExtension() { |
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return pathinfo($this->pathname, PATHINFO_EXTENSION); |
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} |
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/** |
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* Returns the filename |
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* |
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* @return string the filename |
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*/ |
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public function getFilename() { |
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return basename($this->pathname); |
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} |
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/** |
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* Gets the path without filename |
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* |
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* @return string |
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*/ |
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public function getDirname() { |
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return dirname($this->pathname); |
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} |
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/** |
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* Gets the path to the file |
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* |
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* @return Text |
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*/ |
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public function getPathname() { |
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return $this->pathname; |
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} |
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/** |
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* Converts the path into a path object |
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* |
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* @return Path |
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*/ |
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public function toPath() { |
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return new Path($this->pathname); |
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} |
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/** |
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* Gets last access time. |
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* |
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* @return DateTime |
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*/ |
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public function getLastAccessedAt() { |
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$timestamp = fileatime($this->pathname); |
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$time = new DateTime(); |
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$time->setTimestamp($timestamp); |
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return $time; |
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} |
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/** |
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* Gets the created time. |
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* |
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* @return DateTime |
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*/ |
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public function getCreatedAt() { |
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$timestamp = filemtime($this->pathname); |
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$time = new DateTime(); |
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$time->setTimestamp($timestamp); |
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return $time; |
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} |
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/** |
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* Gets last modified time. |
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* |
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* @return DateTime |
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*/ |
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public function getModifiedAt() { |
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$timestamp = filemtime($this->pathname); |
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$time = new DateTime(); |
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$time->setTimestamp($timestamp); |
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return $time; |
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} |
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/** |
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* Gets file inode |
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* |
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* @return int Returns the inode number of the file, or FALSE on failure. |
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*/ |
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public function getInode() { |
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return fileinode($this->pathname); |
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} |
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/** |
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* Gets file group |
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* |
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* @return int Returns the group ID, or FALSE if an error occurs. |
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*/ |
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public function getGroup() { |
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return filegroup($this->pathname); |
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} |
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/** |
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* Gets file owner |
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* |
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* @return int Returns the user ID of the owner, or FALSE on failure. |
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*/ |
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public function getOwner() { |
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return fileowner($this->pathname); |
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} |
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/** |
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* Gets file permissions |
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* |
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* @return int Returns the file's permissions as a numeric mode. Lower bits of this |
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* mode are the same as the permissions expected by chmod(), however on most platforms |
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* the return value will also include information on the type of file given as filename. |
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* The examples below demonstrate how to test the return value for specific permissions |
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* and file types on POSIX systems, including Linux and Mac OS X. |
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*/ |
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public function getPermissions() { |
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return fileperms($this->pathname); |
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} |
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/** |
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* Checks its existance |
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* |
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* @return boolean Returns TRUE if exists; FALSE otherwise. Will return FALSE for symlinks |
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* pointing to non-existing files. |
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*/ |
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public function exists() { |
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return file_exists($this->pathname); |
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} |
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/** |
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* Tells whether is executable |
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* |
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* @return boolean Returns TRUE if exists and is executable. |
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*/ |
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public function isExecutable() { |
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return is_executable($this->pathname); |
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} |
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/** |
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* Tells whether is readable |
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* |
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* @return boolean Returns TRUE if exists and is readable. |
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*/ |
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public function isReadable() { |
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return is_readable($this->pathname); |
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} |
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/** |
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* Tells whether is writable |
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* |
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* @return boolean Returns TRUE if exists and is writable. |
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*/ |
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public function isWritable() { |
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return is_writable($this->pathname); |
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} |
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/** |
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* Tells whether the filename is a symbolic link |
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* |
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* @return boolean Returns TRUE if the filename exists and is a symbolic link, FALSE otherwise. |
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*/ |
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public function isLink() { |
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return is_link($this->pathname); |
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} |
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/** |
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* Returns the target if this is a symbolic link |
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* |
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* @see #isLink |
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* @return Path|null The target path or null if this isn't a link |
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*/ |
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public function getLinkTarget() { |
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if ($this->isLink()) { |
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return new Path(readlink($this->pathname)); |
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} |
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return null; |
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} |
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/** |
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* Attempts to change the group. |
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* |
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* Only the superuser may change the group arbitrarily; other users may |
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* change the group of a file to any group of which that user is a member. |
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* |
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* @param mixed $group A group name or number. |
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* @return boolean Returns TRUE on success or FALSE on failure. |
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*/ |
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public function setGroup($group) { |
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if ($this->isLink()) { |
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return lchgrp($this->pathname, $group); |
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} else { |
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return chgrp($this->pathname, $group); |
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} |
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} |
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/** |
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* Attempts to change the mode. |
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* |
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* @see #setGroup |
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* @see #setOwner |
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* |
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* @param int $mode |
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* Note that mode is not automatically assumed to be an octal value, so strings |
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* (such as "g+w") will not work properly. To ensure the expected operation, you |
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* need to prefix mode with a zero (0). |
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* |
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* @return boolean Returns TRUE on success or FALSE on failure. |
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*/ |
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public function setMode($mode) { |
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if ($this->isLink()) { |
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return lchmod($this->pathname, $mode); |
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} else { |
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return chmod($this->pathname, $mode); |
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} |
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} |
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/** |
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* Changes file owner |
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* |
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* Attempts to change the owner. Only the superuser may change the owner of a file. |
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* |
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* @param mixed $user A user name or number. |
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* @return boolean Returns TRUE on success or FALSE on failure. |
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*/ |
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public function setOwner($user) { |
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if ($this->isLink()) { |
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return lchown($this->pathname, $user); |
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} else { |
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return chown($this->pathname, $user); |
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} |
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} |
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/** |
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* Copies the file |
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* |
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* If the destination file already exists, it will be overwritten. |
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* |
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* @throws FileException When an error appeared. |
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* @param string|Path $destination The destination path. |
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*/ |
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public function copy($destination) { |
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$destination = $this->getDestination($destination); |
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if (!@copy($this->getPathname(), $destination)) { |
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throw new FileException(sprintf('Failed to copy %s to %s', $this->pathname, $destination)); |
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} |
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} |
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/** |
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* Moves the file |
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* |
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* @throws FileException When an error appeared. |
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* @param string|Path $destination |
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*/ |
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public function move($destination) { |
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$destination = $this->getDestination($destination); |
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if (@rename($this->getPathname(), $destination)) { |
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$this->pathname = $destination; |
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} else { |
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throw new FileException(sprintf('Failed to move %s to %s', $this->pathname, $destination)); |
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} |
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} |
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/** |
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* Transforms destination into path and ensures, parent directory exists |
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* |
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* @param string $destination |
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* @return Path |
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*/ |
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private function getDestination($destination) { |
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$destination = $destination instanceof Path ? $destination : new Path($destination); |
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$targetDir = new Directory($destination->getDirname()); |
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$targetDir->make(); |
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return $destination; |
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} |
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/** |
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* Creates a symlink to the given destination |
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* |
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* @param string|Path $destination |
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*/ |
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public function linkTo($destination) { |
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$target = new FileDescriptor($destination); |
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$targetDir = new Directory($target->getDirname()); |
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$targetDir->make(); |
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$ok = false; |
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if ($target->isLink()) { |
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if (!$target->getLinkTarget()->equals($this->pathname)) { |
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$target->delete(); |
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} else { |
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$ok = true; |
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} |
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} |
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if (!$ok && @symlink($this->pathname, $target->getPathname()) !== true) { |
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$report = error_get_last(); |
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if (is_array($report) && DIRECTORY_SEPARATOR === '\\' && strpos($report['message'], 'error code(1314)') !== false) { |
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throw new FileException('Unable to create symlink due to error code 1314: \'A required privilege is not held by the client\'. Do you have the required Administrator-rights?'); |
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} |
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throw new FileException(sprintf('Failed to create symbolic link from %s to %s', $this->pathname, $targetDir)); |
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} |
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} |
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public abstract function delete(); |
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} |
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.