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Developer Documentation
- Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
- Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
- PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
/lib/filestorage/ -> stored_file.php (source)
Differences Between: [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]
Definition of a class stored_file.
| Copyright: | 2008 Petr Skoda {@link http://skodak.org} |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 1197 lines (41 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 1 class
stored_file:: (71 methods):
__construct()
__sleep()
__wakeup()
is_external_file()
is_controlled_link()
update()
rename()
replace_content_with()
replace_file_with()
delete_reference()
is_directory()
delete()
add_to_curl_request()
get_content_file_handle()
readfile()
get_content()
copy_content_to()
copy_content_to_temp()
list_files()
get_total_content_size()
extract_to_pathname()
extract_to_storage()
archive_file()
get_imageinfo()
is_valid_image()
get_parent_directory()
set_synchronised_content_from_file()
set_synchronised_content_from_string()
sync_external_file()
get_contextid()
get_component()
get_filearea()
get_itemid()
get_filepath()
get_filename()
get_userid()
get_filesize()
set_filesize()
get_mimetype()
get_timecreated()
get_timemodified()
set_timemodified()
get_status()
get_id()
get_contenthash()
get_pathnamehash()
get_license()
set_license()
get_author()
set_author()
get_source()
set_source()
get_sortorder()
set_sortorder()
get_repository_id()
get_repository_type()
get_referencefileid()
get_referencelastsync()
get_referencelifetime()
get_reference()
get_reference_details()
set_synchronized()
set_missingsource()
send_file()
import_external_file_contents()
send_relative_file()
generate_image_thumbnail()
resize_image()
compare_to_path()
compare_to_string()
rotate_image()
Class: stored_file - X-Ref
Class representing local files stored in a sha1 file pool.Since Moodle 2.0 file contents are stored in sha1 pool and
all other file information is stored in new "files" database table.
| __construct(file_storage $fs, stdClass $file_record, $deprecated = null) X-Ref |
| Constructor, this constructor should be called ONLY from the file_storage class! param: file_storage $fs file storage instance param: stdClass $file_record description of file param: string $deprecated |
| __sleep() X-Ref |
| Magic method, called during serialization. return: array |
| __wakeup() X-Ref |
| Magic method, called during unserialization. |
| is_external_file() X-Ref |
| Whether or not this is a external resource return: bool |
| is_controlled_link() X-Ref |
| Whether or not this is a controlled link. Note that repositories cannot support FILE_REFERENCE and FILE_CONTROLLED_LINK. return: bool |
| update($dataobject) X-Ref |
| Update some file record fields NOTE: Must remain protected param: stdClass $dataobject |
| rename($filepath, $filename) X-Ref |
| Rename filename param: string $filepath file path param: string $filename file name |
| replace_content_with(stored_file $storedfile) X-Ref |
| Function stored_file::replace_content_with() is deprecated. Please use stored_file::replace_file_with() |
| replace_file_with(stored_file $newfile) X-Ref |
| Replaces the fields that might have changed when file was overriden in filepicker: reference, contenthash, filesize, userid Note that field 'source' must be updated separately because it has different format for draft and non-draft areas and this function will usually be used to replace non-draft area file with draft area file. param: stored_file $newfile |
| delete_reference() X-Ref |
| Unlink the stored file from the referenced file This methods destroys the link to the record in files_reference table. This effectively turns the stored file from being an alias to a plain copy. However, the caller has to make sure that the actual file's content has beed synced prior to calling this method. |
| is_directory() X-Ref |
| Is this a directory? Directories are only emulated, internally they are stored as empty files with a "." instead of name - this means empty directory contains exactly one empty file with name dot. return: bool true means directory, false means file |
| delete() X-Ref |
| Delete file from files table. The content of files stored in sha1 pool is reclaimed later - the occupied disk space is reclaimed much later. return: bool always true or exception if error occurred |
| add_to_curl_request(&$curlrequest, $key) X-Ref |
| adds this file path to a curl request (POST only) param: curl $curlrequest the curl request object param: string $key what key to use in the POST request return: void |
| get_content_file_handle($type = self::FILE_HANDLE_FOPEN) X-Ref |
| Returns file handle - read only mode, no writing allowed into pool files! When you want to modify a file, create a new file and delete the old one. param: int $type Type of file handle (FILE_HANDLE_xx constant) return: resource file handle |
| readfile() X-Ref |
| Dumps file content to page. |
| get_content() X-Ref |
| Returns file content as string. return: string content |
| copy_content_to($pathname) X-Ref |
| Copy content of file to given pathname. param: string $pathname real path to the new file return: bool success |
| copy_content_to_temp($dir = 'files', $fileprefix = 'tempup_') X-Ref |
| Copy content of file to temporary folder and returns file path param: string $dir name of the temporary directory param: string $fileprefix prefix of temporary file. return: string|bool path of temporary file or false. |
| list_files(file_packer $packer) X-Ref |
| List contents of archive. param: file_packer $packer file packer instance return: array of file infos |
| get_total_content_size(file_packer $packer) X-Ref |
| Returns the total size (in bytes) of the contents of an archive. param: file_packer $packer file packer instance return: int|null total size in bytes |
| extract_to_pathname(file_packer $packer, $pathname,file_progress $progress = null) X-Ref |
| Extract file to given file path (real OS filesystem), existing files are overwritten. param: file_packer $packer file packer instance param: string $pathname target directory param: file_progress $progress Progress indicator callback or null if not required return: array|bool list of processed files; false if error |
| extract_to_storage(file_packer $packer, $contextid,$component, $filearea, $itemid, $pathbase, $userid = null, file_progress $progress = null) X-Ref |
| Extract file to given file path (real OS filesystem), existing files are overwritten. param: file_packer $packer file packer instance param: int $contextid context ID param: string $component component param: string $filearea file area param: int $itemid item ID param: string $pathbase path base param: int $userid user ID param: file_progress $progress Progress indicator callback or null if not required return: array|bool list of processed files; false if error |
| archive_file(file_archive $filearch, $archivepath) X-Ref |
| Add file/directory into archive. param: file_archive $filearch file archive instance param: string $archivepath pathname in archive return: bool success |
| get_imageinfo() X-Ref |
| Returns information about image, information is determined from the file content return: mixed array with width, height and mimetype; false if not an image |
| is_valid_image() X-Ref |
| Verifies the file is a valid web image - gif, png and jpeg only. It should be ok to serve this image from server without any other security workarounds. return: bool true if file ok |
| get_parent_directory() X-Ref |
| Returns parent directory, creates missing parents if needed. return: stored_file |
| set_synchronised_content_from_file($path) X-Ref |
| Set synchronised content from file. param: string $path Path to the file. |
| set_synchronised_content_from_string($content) X-Ref |
| Set synchronised content from content. param: string $content File content. |
| sync_external_file() X-Ref |
| Synchronize file if it is a reference and needs synchronizing Updates contenthash and filesize |
| get_contextid() X-Ref |
| Returns context id of the file return: int context id |
| get_component() X-Ref |
| Returns component name - this is the owner of the areas, nothing else is allowed to read or modify the files directly!! return: string |
| get_filearea() X-Ref |
| Returns file area name, this divides files of one component into groups with different access control. All files in one area have the same access control. return: string |
| get_itemid() X-Ref |
| Returns returns item id of file. return: int |
| get_filepath() X-Ref |
| Returns file path - starts and ends with /, \ are not allowed. return: string |
| get_filename() X-Ref |
| Returns file name or '.' in case of directories. return: string |
| get_userid() X-Ref |
| Returns id of user who created the file. return: int |
| get_filesize() X-Ref |
| Returns the size of file in bytes. return: int bytes |
| set_filesize($filesize) X-Ref |
| Function stored_file::set_filesize() is deprecated. Please use stored_file::replace_file_with |
| get_mimetype() X-Ref |
| Returns mime type of file. return: string |
| get_timecreated() X-Ref |
| Returns unix timestamp of file creation date. return: int |
| get_timemodified() X-Ref |
| Returns unix timestamp of last file modification. return: int |
| set_timemodified($timemodified) X-Ref |
| set timemodified param: int $timemodified |
| get_status() X-Ref |
| Returns file status flag. return: int 0 means file OK, anything else is a problem and file can not be used |
| get_id() X-Ref |
| Returns file id. return: int |
| get_contenthash() X-Ref |
| Returns sha1 hash of file content. return: string |
| get_pathnamehash() X-Ref |
| Returns sha1 hash of all file path components sha1("contextid/component/filearea/itemid/dir/dir/filename.ext"). return: string |
| get_license() X-Ref |
| Returns the license type of the file, it is a short name referred from license table. return: string |
| set_license($license) X-Ref |
| Set license param: string $license license |
| get_author() X-Ref |
| Returns the author name of the file. return: string |
| set_author($author) X-Ref |
| Set author param: string $author |
| get_source() X-Ref |
| Returns the source of the file, usually it is a url. return: string |
| set_source($source) X-Ref |
| Set license param: string $license license |
| get_sortorder() X-Ref |
| Returns the sort order of file return: int |
| set_sortorder($sortorder) X-Ref |
| Set file sort order param: int $sortorder return: int |
| get_repository_id() X-Ref |
| Returns repository id return: int|null |
| get_repository_type() X-Ref |
| Returns repository type. return: mixed str|null the repository type or null if is not an external file |
| get_referencefileid() X-Ref |
| get reference file id return: int |
| get_referencelastsync() X-Ref |
| Get reference last sync time return: int |
| get_referencelifetime() X-Ref |
| Function stored_file::get_referencelifetime() is deprecated as reference life time is no longer stored in DB or returned by repository. Each repository should decide by itself when to synchronise the references. |
| get_reference() X-Ref |
| Returns file reference return: string |
| get_reference_details() X-Ref |
| Get human readable file reference information return: string |
| set_synchronized($contenthash, $filesize, $status = 0, $timemodified = null) X-Ref |
| Called after reference-file has been synchronized with the repository We update contenthash, filesize and status in files table if changed and we always update lastsync in files_reference table param: null|string $contenthash if set to null contenthash is not changed param: int $filesize new size of the file param: int $status new status of the file (0 means OK, 666 - source missing) param: int $timemodified last time modified of the source, if known |
| set_missingsource() X-Ref |
| Sets the error status for a file that could not be synchronised |
| send_file($lifetime, $filter, $forcedownload, $options) X-Ref |
| Send file references param: int $lifetime Number of seconds before the file should expire from caches (default 24 hours) param: int $filter 0 (default)=no filtering, 1=all files, 2=html files only param: bool $forcedownload If true (default false), forces download of file rather than view in browser/plugin param: array $options additional options affecting the file serving |
| import_external_file_contents($maxbytes = 0) X-Ref |
| Imports the contents of an external file into moodle filepool. param: int $maxbytes throw an exception if file size is bigger than $maxbytes (0 means no limit) |
| send_relative_file($relativepath) X-Ref |
| Gets a file relative to this file in the repository and sends it to the browser. Checks the function repository::supports_relative_file() to make sure it can be used. param: string $relativepath the relative path to the file we are trying to access |
| generate_image_thumbnail($width, $height) X-Ref |
| Generates a thumbnail for this stored_file. If the GD library has at least version 2 and PNG support is available, the returned data is the content of a transparent PNG file containing the thumbnail. Otherwise, the function returns contents of a JPEG file with black background containing the thumbnail. param: int $width the width of the requested thumbnail param: int $height the height of the requested thumbnail return: string|bool false if a problem occurs, the thumbnail image data otherwise |
| resize_image($width, $height) X-Ref |
| Generate a resized image for this stored_file. param: int|null $width The desired width, or null to only use the height. param: int|null $height The desired height, or null to only use the width. return: string|false False when a problem occurs, else the image data. |
| compare_to_path($path) X-Ref |
| Check whether the supplied file is the same as this file. param: string $path The path to the file on disk return: boolean |
| compare_to_string($content) X-Ref |
| Check whether the supplied content is the same as this file. param: string $content The file content return: boolean |
| rotate_image() X-Ref |
| Generate a rotated image for this stored_file based on exif information. return: array|false False when a problem occurs, else the image data and image size. |
