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interface FileSystemInterface in Drupal 8

Same name and namespace in other branches
  1. 9 core/lib/Drupal/Core/File/FileSystemInterface.php \Drupal\Core\File\FileSystemInterface

Provides an interface for helpers that operate on files and stream wrappers.

Hierarchy

Expanded class hierarchy of FileSystemInterface

All classes that implement FileSystemInterface

78 files declare their use of FileSystemInterface
ArchiverManager.php in core/lib/Drupal/Core/Archiver/ArchiverManager.php
AssetDumper.php in core/lib/Drupal/Core/Asset/AssetDumper.php
color.module in core/modules/color/color.module
Allows users to change the color scheme of themes.
ConfigController.php in core/modules/config/src/Controller/ConfigController.php
ConfigExportUITest.php in core/modules/config/tests/src/Functional/ConfigExportUITest.php

... See full list

File

core/lib/Drupal/Core/File/FileSystemInterface.php, line 8

Namespace

Drupal\Core\File
View source
interface FileSystemInterface {

  /**
   * Flag for dealing with existing files: Appends number until name is unique.
   */
  const EXISTS_RENAME = 0;

  /**
   * Flag for dealing with existing files: Replace the existing file.
   */
  const EXISTS_REPLACE = 1;

  /**
   * Flag for dealing with existing files: Do nothing and return FALSE.
   */
  const EXISTS_ERROR = 2;

  /**
   * Flag used by ::prepareDirectory() -- create directory if not present.
   */
  const CREATE_DIRECTORY = 1;

  /**
   * Flag used by ::prepareDirectory() -- file permissions may be changed.
   */
  const MODIFY_PERMISSIONS = 2;

  /**
   * Moves an uploaded file to a new location.
   *
   * PHP's move_uploaded_file() does not properly support streams if
   * open_basedir is enabled, so this function fills that gap.
   *
   * Compatibility: normal paths and stream wrappers.
   *
   * @param string $filename
   *   The filename of the uploaded file.
   * @param string $uri
   *   A string containing the destination URI of the file.
   *
   * @return bool
   *   TRUE on success, or FALSE on failure.
   *
   * @see move_uploaded_file()
   * @see https://www.drupal.org/node/515192
   * @ingroup php_wrappers
   */
  public function moveUploadedFile($filename, $uri);

  /**
   * Sets the permissions on a file or directory.
   *
   * This function will use the file_chmod_directory and
   * file_chmod_file settings for the default modes for directories
   * and uploaded/generated files. By default these will give everyone read
   * access so that users accessing the files with a user account without the
   * webserver group (e.g. via FTP) can read these files, and give group write
   * permissions so webserver group members (e.g. a vhost account) can alter
   * files uploaded and owned by the webserver.
   *
   * PHP's chmod does not support stream wrappers so we use our wrapper
   * implementation which interfaces with chmod() by default. Contrib wrappers
   * may override this behavior in their implementations as needed.
   *
   * @param string $uri
   *   A string containing a URI file, or directory path.
   * @param int $mode
   *   Integer value for the permissions. Consult PHP chmod() documentation for
   *   more information.
   *
   * @return bool
   *   TRUE for success, FALSE in the event of an error.
   *
   * @ingroup php_wrappers
   */
  public function chmod($uri, $mode = NULL);

  /**
   * Deletes a file.
   *
   * PHP's unlink() is broken on Windows, as it can fail to remove a file when
   * it has a read-only flag set.
   *
   * @param string $uri
   *   A URI or pathname.
   * @param resource $context
   *   Refer to http://php.net/manual/ref.stream.php
   *
   * @return bool
   *   Boolean TRUE on success, or FALSE on failure.
   *
   * @see unlink()
   * @ingroup php_wrappers
   */
  public function unlink($uri, $context = NULL);

  /**
   * Resolves the absolute filepath of a local URI or filepath.
   *
   * The use of this method is discouraged, because it does not work for
   * remote URIs. Except in rare cases, URIs should not be manually resolved.
   *
   * Only use this function if you know that the stream wrapper in the URI uses
   * the local file system, and you need to pass an absolute path to a function
   * that is incompatible with stream URIs.
   *
   * @param string $uri
   *   A stream wrapper URI or a filepath, possibly including one or more
   *   symbolic links.
   *
   * @return string|false
   *   The absolute local filepath (with no symbolic links) or FALSE on failure.
   *
   * @see \Drupal\Core\StreamWrapper\StreamWrapperInterface::realpath()
   * @see http://php.net/manual/function.realpath.php
   * @ingroup php_wrappers
   */
  public function realpath($uri);

  /**
   * Gets the name of the directory from a given path.
   *
   * PHP's dirname() does not properly pass streams, so this function fills that
   * gap. It is backwards compatible with normal paths and will use PHP's
   * dirname() as a fallback.
   *
   * Compatibility: normal paths and stream wrappers.
   *
   * @param string $uri
   *   A URI or path.
   *
   * @return string
   *   A string containing the directory name.
   *
   * @see dirname()
   * @see https://www.drupal.org/node/515192
   * @ingroup php_wrappers
   */
  public function dirname($uri);

  /**
   * Gets the filename from a given path.
   *
   * PHP's basename() does not properly support streams or filenames beginning
   * with a non-US-ASCII character.
   *
   * @see http://bugs.php.net/bug.php?id=37738
   * @see basename()
   *
   * @ingroup php_wrappers
   */
  public function basename($uri, $suffix = NULL);

  /**
   * Creates a directory, optionally creating missing components in the path to
   * the directory.
   *
   * When PHP's mkdir() creates a directory, the requested mode is affected by
   * the process's umask. This function overrides the umask and sets the mode
   * explicitly for all directory components created.
   *
   * @param string $uri
   *   A URI or pathname.
   * @param int $mode
   *   Mode given to created directories. Defaults to the directory mode
   *   configured in the Drupal installation. It must have a leading zero.
   * @param bool $recursive
   *   Create directories recursively, defaults to FALSE. Cannot work with a
   *   mode which denies writing or execution to the owner of the process.
   * @param resource $context
   *   Refer to http://php.net/manual/ref.stream.php
   *
   * @return bool
   *   Boolean TRUE on success, or FALSE on failure.
   *
   * @see mkdir()
   * @see https://www.drupal.org/node/515192
   * @ingroup php_wrappers
   *
   * @todo Update with open_basedir compatible recursion logic from
   *   \Drupal\Component\PhpStorage\FileStorage::ensureDirectory().
   */
  public function mkdir($uri, $mode = NULL, $recursive = FALSE, $context = NULL);

  /**
   * Removes a directory.
   *
   * PHP's rmdir() is broken on Windows, as it can fail to remove a directory
   * when it has a read-only flag set.
   *
   * @param string $uri
   *   A URI or pathname.
   * @param resource $context
   *   Refer to http://php.net/manual/ref.stream.php
   *
   * @return bool
   *   Boolean TRUE on success, or FALSE on failure.
   *
   * @see rmdir()
   * @ingroup php_wrappers
   */
  public function rmdir($uri, $context = NULL);

  /**
   * Creates a file with a unique filename in the specified directory.
   *
   * PHP's tempnam() does not return a URI like we want. This function will
   * return a URI if given a URI, or it will return a filepath if given a
   * filepath.
   *
   * Compatibility: normal paths and stream wrappers.
   *
   * @param string $directory
   *   The directory where the temporary filename will be created.
   * @param string $prefix
   *   The prefix of the generated temporary filename.
   *   Note: Windows uses only the first three characters of prefix.
   *
   * @return string|bool
   *   The new temporary filename, or FALSE on failure.
   *
   * @see tempnam()
   * @see https://www.drupal.org/node/515192
   * @ingroup php_wrappers
   */
  public function tempnam($directory, $prefix);

  /**
   * Returns the scheme of a URI (e.g. a stream).
   *
   * @param string $uri
   *   A stream, referenced as "scheme://target" or "data:target".
   *
   * @return string|bool
   *   A string containing the name of the scheme, or FALSE if none. For
   *   example, the URI "public://example.txt" would return "public".
   *
   * @deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. Use
   *   Drupal\Core\StreamWrapper\StreamWrapperManagerInterface::getScheme()
   *   instead.
   *
   * @see https://www.drupal.org/node/3035273
   */
  public function uriScheme($uri);

  /**
   * Checks that the scheme of a stream URI is valid.
   *
   * Confirms that there is a registered stream handler for the provided scheme
   * and that it is callable. This is useful if you want to confirm a valid
   * scheme without creating a new instance of the registered handler.
   *
   * @param string $scheme
   *   A URI scheme, a stream is referenced as "scheme://target".
   *
   * @return bool
   *   Returns TRUE if the string is the name of a validated stream, or FALSE if
   *   the scheme does not have a registered handler.
   *
   * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use
   *   Drupal\Core\StreamWrapper\StreamWrapperManagerInterface::isValidScheme()
   *   instead.
   *
   * @see https://www.drupal.org/node/3035273
   */
  public function validScheme($scheme);

  /**
   * Copies a file to a new location without invoking the file API.
   *
   * This is a powerful function that in many ways performs like an advanced
   * version of copy().
   * - Checks if $source and $destination are valid and readable/writable.
   * - If file already exists in $destination either the call will error out,
   *   replace the file or rename the file based on the $replace parameter.
   * - If the $source and $destination are equal, the behavior depends on the
   *   $replace parameter. FileSystemInterface::EXISTS_REPLACE will replace the
   *   existing file. FileSystemInterface::EXISTS_ERROR will error out.
   *   FileSystemInterface::EXISTS_RENAME will rename the file until the
   *   $destination is unique.
   * - Provides a fallback using realpaths if the move fails using stream
   *   wrappers. This can occur because PHP's copy() function does not properly
   *   support streams if open_basedir is enabled. See
   *   https://bugs.php.net/bug.php?id=60456
   *
   * @param string $source
   *   A string specifying the filepath or URI of the source file.
   * @param string $destination
   *   A URI containing the destination that $source should be copied to. The
   *   URI may be a bare filepath (without a scheme).
   * @param int $replace
   *   Replace behavior when the destination file already exists:
   *   - FileSystemInterface::EXISTS_REPLACE - Replace the existing file.
   *   - FileSystemInterface::EXISTS_RENAME - Append _{incrementing number}
   *     until the filename is unique.
   *   - FileSystemInterface::EXISTS_ERROR - Throw an exception.
   *
   * @return string
   *   The path to the new file.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   */
  public function copy($source, $destination, $replace = self::EXISTS_RENAME);

  /**
   * Deletes a file without database changes or hook invocations.
   *
   * This function should be used when the file to be deleted does not have an
   * entry recorded in the files table.
   *
   * @param string $path
   *   A string containing a file path or (streamwrapper) URI.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   */
  public function delete($path);

  /**
   * Deletes all files and directories in the specified filepath recursively.
   *
   * If the specified path is a directory then the function is called
   * recursively to process the contents. Once the contents have been removed
   * the directory is also removed.
   *
   * If the specified path is a file then it will be processed with delete()
   * method.
   *
   * Note that this only deletes visible files with write permission.
   *
   * @param string $path
   *   A string containing either an URI or a file or directory path.
   * @param callable|null $callback
   *   Callback function to run on each file prior to deleting it and on each
   *   directory prior to traversing it. For example, can be used to modify
   *   permissions.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   */
  public function deleteRecursive($path, callable $callback = NULL);

  /**
   * Moves a file to a new location without database changes or hook invocation.
   *
   * This is a powerful function that in many ways performs like an advanced
   * version of rename().
   * - Checks if $source and $destination are valid and readable/writable.
   * - Checks that $source is not equal to $destination; if they are an error
   *   is reported.
   * - If file already exists in $destination either the call will error out,
   *   replace the file or rename the file based on the $replace parameter.
   * - Works around a PHP bug where rename() does not properly support streams
   *   if safe_mode or open_basedir are enabled.
   *
   * @param string $source
   *   A string specifying the filepath or URI of the source file.
   * @param string $destination
   *   A URI containing the destination that $source should be moved to. The
   *   URI may be a bare filepath (without a scheme) and in that case the
   *   default scheme (public://) will be used.
   * @param int $replace
   *   Replace behavior when the destination file already exists:
   *   - FileSystemInterface::EXISTS_REPLACE - Replace the existing file.
   *   - FileSystemInterface::EXISTS_RENAME - Append _{incrementing number}
   *     until the filename is unique.
   *   - FileSystemInterface::EXISTS_ERROR - Do nothing and return FALSE.
   *
   * @return string
   *   The path to the new file.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   *
   * @see https://bugs.php.net/bug.php?id=60456
   */
  public function move($source, $destination, $replace = self::EXISTS_RENAME);

  /**
   * Saves a file to the specified destination without invoking file API.
   *
   * This function is identical to file_save_data() except the file will not be
   * saved to the {file_managed} table and none of the file_* hooks will be
   * called.
   *
   * @param string $data
   *   A string containing the contents of the file.
   * @param string $destination
   *   A string containing the destination location. This must be a stream
   *   wrapper URI.
   * @param int $replace
   *   Replace behavior when the destination file already exists:
   *   - FileSystemInterface::EXISTS_REPLACE - Replace the existing file.
   *   - FileSystemInterface::EXISTS_RENAME - Append _{incrementing number}
   *     until the filename is unique.
   *   - FileSystemInterface::EXISTS_ERROR - Do nothing and return FALSE.
   *
   * @return string
   *   A string with the path of the resulting file, or FALSE on error.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   *
   * @see file_save_data()
   */
  public function saveData($data, $destination, $replace = self::EXISTS_RENAME);

  /**
   * Checks that the directory exists and is writable.
   *
   * Directories need to have execute permissions to be considered a directory
   * by FTP servers, etc.
   *
   * @param string $directory
   *   A string reference containing the name of a directory path or URI. A
   *   trailing slash will be trimmed from a path.
   * @param int $options
   *   A bitmask to indicate if the directory should be created if it does
   *   not exist (FileSystemInterface::CREATE_DIRECTORY) or made writable if it
   *   is read-only (FileSystemInterface::MODIFY_PERMISSIONS).
   *
   * @return bool
   *   TRUE if the directory exists (or was created) and is writable. FALSE
   *   otherwise.
   */
  public function prepareDirectory(&$directory, $options = self::MODIFY_PERMISSIONS);

  /**
   * Creates a full file path from a directory and filename.
   *
   * If a file with the specified name already exists, an alternative will be
   * used.
   *
   * @param string $basename
   *   The filename.
   * @param string $directory
   *   The directory or parent URI.
   *
   * @return string
   *   File path consisting of $directory and a unique filename based off
   *   of $basename.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   */
  public function createFilename($basename, $directory);

  /**
   * Determines the destination path for a file.
   *
   * @param string $destination
   *   The desired final URI or filepath.
   * @param int $replace
   *   Replace behavior when the destination file already exists.
   *   - FileSystemInterface::EXISTS_REPLACE - Replace the existing file.
   *   - FileSystemInterface::EXISTS_RENAME - Append _{incrementing number}
   *     until the filename is unique.
   *   - FileSystemInterface::EXISTS_ERROR - Do nothing and return FALSE.
   *
   * @return string|bool
   *   The destination filepath, or FALSE if the file already exists
   *   and FileSystemInterface::EXISTS_ERROR is specified.
   *
   * @throws \Drupal\Core\File\Exception\FileException
   *   Implementation may throw FileException or its subtype on failure.
   */
  public function getDestinationFilename($destination, $replace);

  /**
   * Gets the path of the configured temporary directory.
   *
   * If the path is not set, it will fall back to the OS-specific default if
   * set, otherwise a directory under the public files directory. It will then
   * set this as the configured directory.
   *
   * @return string
   *   A string containing the path to the temporary directory.
   */
  public function getTempDirectory();

  /**
   * Finds all files that match a given mask in a given directory.
   *
   * Directories and files beginning with a dot are excluded; this prevents
   * hidden files and directories (such as SVN working directories) from being
   * scanned. Use the umask option to skip configuration directories to
   * eliminate the possibility of accidentally exposing configuration
   * information. Also, you can use the base directory, recurse, and min_depth
   * options to improve performance by limiting how much of the filesystem has
   * to be traversed.
   *
   * @param string $dir
   *   The base directory or URI to scan, without trailing slash.
   * @param string $mask
   *   The preg_match() regular expression for files to be included.
   * @param array $options
   *   An associative array of additional options, with the following elements:
   *   - 'nomask': The preg_match() regular expression for files to be excluded.
   *     Defaults to the 'file_scan_ignore_directories' setting.
   *   - 'callback': The callback function to call for each match. There is no
   *     default callback.
   *   - 'recurse': When TRUE, the directory scan will recurse the entire tree
   *     starting at the provided directory. Defaults to TRUE.
   *   - 'key': The key to be used for the returned associative array of files.
   *     Possible values are 'uri', for the file's URI; 'filename', for the
   *     basename of the file; and 'name' for the name of the file without the
   *     extension. Defaults to 'uri'.
   *   - 'min_depth': Minimum depth of directories to return files from.
   *     Defaults to 0.
   *
   * @return array
   *   An associative array (keyed on the chosen key) of objects with 'uri',
   *   'filename', and 'name' properties corresponding to the matched files.
   *
   * @throws \Drupal\Core\File\Exception\NotRegularDirectoryException
   *   If the directory does not exist.
   */
  public function scanDirectory($dir, $mask, array $options = []);

}

Members

Namesort descending Modifiers Type Description Overrides
FileSystemInterface::basename public function Gets the filename from a given path. 1
FileSystemInterface::chmod public function Sets the permissions on a file or directory. 1
FileSystemInterface::copy public function Copies a file to a new location without invoking the file API. 1
FileSystemInterface::createFilename public function Creates a full file path from a directory and filename. 1
FileSystemInterface::CREATE_DIRECTORY constant Flag used by ::prepareDirectory() -- create directory if not present.
FileSystemInterface::delete public function Deletes a file without database changes or hook invocations. 1
FileSystemInterface::deleteRecursive public function Deletes all files and directories in the specified filepath recursively. 1
FileSystemInterface::dirname public function Gets the name of the directory from a given path. 1
FileSystemInterface::EXISTS_ERROR constant Flag for dealing with existing files: Do nothing and return FALSE.
FileSystemInterface::EXISTS_RENAME constant Flag for dealing with existing files: Appends number until name is unique.
FileSystemInterface::EXISTS_REPLACE constant Flag for dealing with existing files: Replace the existing file.
FileSystemInterface::getDestinationFilename public function Determines the destination path for a file. 1
FileSystemInterface::getTempDirectory public function Gets the path of the configured temporary directory. 1
FileSystemInterface::mkdir public function Creates a directory, optionally creating missing components in the path to the directory. 1
FileSystemInterface::MODIFY_PERMISSIONS constant Flag used by ::prepareDirectory() -- file permissions may be changed.
FileSystemInterface::move public function Moves a file to a new location without database changes or hook invocation. 1
FileSystemInterface::moveUploadedFile public function Moves an uploaded file to a new location. 1
FileSystemInterface::prepareDirectory public function Checks that the directory exists and is writable. 1
FileSystemInterface::realpath public function Resolves the absolute filepath of a local URI or filepath. 1
FileSystemInterface::rmdir public function Removes a directory. 1
FileSystemInterface::saveData public function Saves a file to the specified destination without invoking file API. 1
FileSystemInterface::scanDirectory public function Finds all files that match a given mask in a given directory. 1
FileSystemInterface::tempnam public function Creates a file with a unique filename in the specified directory. 1
FileSystemInterface::unlink public function Deletes a file. 1
FileSystemInterface::uriScheme Deprecated public function Returns the scheme of a URI (e.g. a stream). 1
FileSystemInterface::validScheme Deprecated public function Checks that the scheme of a stream URI is valid. 1