ilObjFileAccess Class Reference

Access class for file objects. More...

Inheritance diagram for ilObjFileAccess:

Collaboration diagram for ilObjFileAccess:

Public Member Functions
	canBeDelivered (ilWACPath $ilWACPath)
Public Member Functions inherited from ilObjectAccess
	_checkAccess (string $cmd, string $permission, int $ref_id, int $obj_id, ?int $user_id=null)
	Checks whether a user may invoke a command or not (this method is called by ilAccessHandler::checkAccess) More...
	canBeDelivered (ilWACPath $ilWACPath)
	canBeDelivered (ilWACPath $ilWACPath)

Static Public Member Functions
static	_getCommands ()
	get commands this method returns an array of all possible commands/permission combinations example: $commands = array ( array("permission" => "read", "cmd" => "view", "lang_var" => "show"), array("permission" => "write", "cmd" => "edit", "lang_var" => "edit"), ); More...
static	_checkGoto (string $a_target)
	check whether goto script will succeed More...
static	_lookupFileSize (int $a_id, bool $by_reference=true)
static	_getFileExtension (string $a_file_name)
	Gets the file extension of the specified file name. More...
static	_isFileHidden (string $a_file_name)
	Returns true, if a file with the specified name, is usually hidden from the user. More...
static	_appendNumberOfCopyToFilename ($a_file_name, $nth_copy=null, $a_handle_extension=false)
	Appends the text " - Copy" to a filename in the language of the current user. More...
static	_getPermanentDownloadLink (int $ref_id)
	Gets the permanent download link for the file. More...
static	_preloadData (array $obj_ids, array $ref_ids)
Static Public Member Functions inherited from ilObjectAccess
static	_getCommands ()
	get commands More...
static	_checkGoto (string $target)
	check whether goto script will succeed More...
static	_isOffline (int $obj_id)
	Type-specific implementation of general status, has to be overwritten if object type does not support centralized offline handling. More...
static	_preloadData (array $obj_ids, array $ref_ids)
	Preload data. More...

Static Protected Attributes
static array	$inline_file_extensions = []
	Contains an array of extensions separated by space. More...
static array	$preload_list_gui_data = []

Detailed Description

Access class for file objects.

Author

Alex Killing alex..nosp@m.kill.nosp@m.ing@g.nosp@m.mx.d.nosp@m.e

Stefan Born stefa.nosp@m.n.bo.nosp@m.rn@ph.nosp@m.zh.c.nosp@m.h

Version

$Id$

Definition at line 29 of file class.ilObjFileAccess.php.

Member Function Documentation

_appendNumberOfCopyToFilename()

static ilObjFileAccess::_appendNumberOfCopyToFilename (   $a_file_name,   $nth_copy = null,   $a_handle_extension = false  )

static

Appends the text " - Copy" to a filename in the language of the current user.

If the provided $nth_copy parameter is greater than 1, then is appended in round brackets. If $nth_copy parameter is null, then the function determines the copy number on its own. If this function detects, that the filename already ends with " - Copy", or with "- Copy ($nth_copy), it only appends the number of the copy to the filename. This function retains the extension of the filename. Examples: - Calling ilObjFileAccess::_appendCopyToTitle('Hello.txt', 1) returns: "Hello - Copy.txt". - Calling ilObjFileAccess::_appendCopyToTitle('Hello.txt', 2) returns: "Hello - Copy (2).txt". - Calling ilObjFileAccess::_appendCopyToTitle('Hello - Copy (3).txt', 2) returns: "Hello - Copy (2).txt". - Calling ilObjFileAccess::_appendCopyToTitle('Hello - Copy (3).txt', null) returns: "Hello - Copy (4).txt".

Definition at line 209 of file class.ilObjFileAccess.php.

                                                                                                                     : string
    {
        global $DIC;
        $lng = $DIC['lng'];
 
        $filenameWithoutExtension = $a_file_name;
 
        $extension = null;
        if ($a_handle_extension) {
            // Get the extension and the filename without the extension
            $extension = ilObjFileAccess::_getFileExtension($a_file_name);
            if (strlen($extension) > 0) {
                $extension = '.' . $extension;
                $filenameWithoutExtension = substr($a_file_name, 0, -strlen($extension));
            }
        }
 
        // create a regular expression from the language text copy_n_of_suffix, so that
        // we can match it against $filenameWithoutExtension, and retrieve the number of the copy.
        // for example, if copy_n_of_suffix is 'Copy (%1s)', this creates the regular
        // expression '/ Copy \\‍([0-9]+)\\‍)$/'.
        $nthCopyRegex = preg_replace('/([\^$.\[\]|()?*+{}])/', '\\\\${1}', ' '
            . $lng->txt('copy_n_of_suffix'));
        $nthCopyRegex = '/' . preg_replace('/%1\\\\\$s/', '([0-9]+)', $nthCopyRegex) . '$/';
 
        // Get the filename without any previously added number of copy.
        // Determine the number of copy, if it has not been specified.
        if (preg_match($nthCopyRegex, $filenameWithoutExtension, $matches)) {
            // this is going to be at least the third copy of the filename
            $filenameWithoutCopy = substr($filenameWithoutExtension, 0, -strlen($matches[0]));
            if ($nth_copy == null) {
                $nth_copy = $matches[1] + 1;
            }
        } else {
            if (substr($filenameWithoutExtension, -strlen(' ' . $lng->txt('copy_of_suffix')))
                == ' ' . $lng->txt('copy_of_suffix')
            ) {
                // this is going to be the second copy of the filename
                $filenameWithoutCopy = substr($filenameWithoutExtension, 0, -strlen(' '
                    . $lng->txt('copy_of_suffix')));
                if ($nth_copy == null) {
                    $nth_copy = 2;
                }
            } else {
                // this is going to be the first copy of the filename
                $filenameWithoutCopy = $filenameWithoutExtension;
                if ($nth_copy == null) {
                    $nth_copy = 1;
                }
            }
        }
 
        // Construct the new filename
        if ($nth_copy > 1) {
            // this is at least the second copy of the filename, append " - Copy ($nth_copy)"
            $newFilename = $filenameWithoutCopy . sprintf(' '
                    . $lng->txt('copy_n_of_suffix'), $nth_copy)
                . $extension;
        } else {
            // this is the first copy of the filename, append " - Copy"
            $newFilename = $filenameWithoutCopy . ' ' . $lng->txt('copy_of_suffix') . $extension;
        }
 
        return $newFilename;
    }

References $DIC, $lng, and _getFileExtension().

Referenced by ilContainerGUI\performPasteIntoMultipleObjectsObject().

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_checkGoto()

static ilObjFileAccess::_checkGoto ( string  $a_target )

static

check whether goto script will succeed

Reimplemented from ilObjectAccess.

Definition at line 116 of file class.ilObjFileAccess.php.

                                                       : bool
    {
        global $DIC;
        $access = $DIC['ilAccess'];
 
        $target_parts = explode("_", $a_target);
 
        // personal workspace context: do not force normal login
        if (isset($target_parts[2]) && $target_parts[2] === "wsp") {
            return ilSharedResourceGUI::hasAccess($target_parts[1]);
        }
 
        $type = $target_parts[0]??null;
        $ref_id = (int) ($target_parts[1] ?? 0);
        if ($type !== "file" || $ref_id <= 0) {
            return false;
        }
        return $access->checkAccess("visible", "", $ref_id)
            || $access->checkAccess("read", "", $ref_id);
    }

References $DIC, $ref_id, $type, ilSharedResourceGUI\hasAccess(), and ILIAS\Repository\int().

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_getCommands()

static ilObjFileAccess::_getCommands ( )

static

get commands this method returns an array of all possible commands/permission combinations example: $commands = array ( array("permission" => "read", "cmd" => "view", "lang_var" => "show"), array("permission" => "write", "cmd" => "edit", "lang_var" => "edit"), );

Returns

array<int, mixed[]>

Reimplemented from ilObjectAccess.

Definition at line 85 of file class.ilObjFileAccess.php.

                                         : array
    {
        $commands = array();
        $commands[] = array(
            "permission" => "read",
            "cmd" => "sendfile",
            "lang_var" => "download",
            "default" => true,
        );
        $commands[] = array(
            "permission" => "write",
            "cmd" => ilFileVersionsGUI::CMD_UNZIP_CURRENT_REVISION,
            "lang_var" => "unzip",
        );
        $commands[] = array(
            "permission" => "write",
            "cmd" => "versions",
            "lang_var" => "versions",
        );
        $commands[] = array(
            "permission" => "write",
            "cmd" => "edit",
            "lang_var" => "settings",
        );
 
        return $commands;
    }

References ilFileVersionsGUI\CMD_UNZIP_CURRENT_REVISION.

Referenced by ilObjFileListGUI\init().

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_getFileExtension()

static ilObjFileAccess::_getFileExtension ( string  $a_file_name )

static

Gets the file extension of the specified file name.

The file name extension is converted to lower case before it is returned. For example, for the file name "HELLO.MP3", this function returns "mp3". A file name extension can have multiple parts. For the file name "hello.tar.gz", this function returns "gz".

Definition at line 165 of file class.ilObjFileAccess.php.

                                                                 : string
    {
        if (preg_match('/\.([a-z0-9]+)\z/i', $a_file_name, $matches) == 1) {
            return strtolower($matches[1]);
        } else {
            return '';
        }
    }

Referenced by _appendNumberOfCopyToFilename(), and ilFilePreviewRenderer\supports().

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_getPermanentDownloadLink()

static ilObjFileAccess::_getPermanentDownloadLink ( int  $ref_id )

static

Gets the permanent download link for the file.

Definition at line 278 of file class.ilObjFileAccess.php.

                                                                 : string
    {
        return ilLink::_getStaticLink($ref_id, "file", true, "_download");
    }

References $ref_id, and ilLink\_getStaticLink().

Referenced by ilObjFileListGUI\getCommandLink(), and ilObjFileGUI\infoScreenForward().

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_isFileHidden()

static ilObjFileAccess::_isFileHidden ( string  $a_file_name )

static

Returns true, if a file with the specified name, is usually hidden from the user.

• Filenames starting with '.' are hidden Unix files
• Filenames ending with '~' are temporary Unix files
• Filenames starting with '~$' are temporary Windows files
• The file "Thumbs.db" is a hidden Windows file

Definition at line 182 of file class.ilObjFileAccess.php.

                                                             : bool
    {
        return substr($a_file_name, 0, 1) == '.' || substr($a_file_name, -1, 1) == '~'
            || substr($a_file_name, 0, 2) == '~$'
            || $a_file_name == 'Thumbs.db';
    }

Referenced by ilItemGroupItems\getAssignableItems(), ilObjFile\isHidden(), and ilExportSelectionTableGUI\parseContainer().

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_lookupFileSize()

static ilObjFileAccess::_lookupFileSize ( int  $a_id, bool  $by_reference = true  )

static

Parameters

int

$a_id

Deprecated:

Definition at line 141 of file class.ilObjFileAccess.php.

                                                                                : int
    {
        try {
            $info_repo = new ilObjFileInfoRepository();
            if ($by_reference) {
                $info = $info_repo->getByRefId($a_id);
            } else {
                $info = $info_repo->getByObjectId($a_id);
            }
 
            return (int) $info->getFileSize()->inBytes();
        } catch (Throwable $t) {
            return 0;
        }
    }

Referenced by ilCheckSumOfFileSizesJob\calculateRecursive(), and ilCheckSumOfWorkspaceFileSizesJob\calculateRecursive().

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_preloadData()

static ilObjFileAccess::_preloadData ( array  $obj_ids, array  $ref_ids  )

static

Parameters

int[]	$obj_ids
int[]	$ref_ids

Reimplemented from ilObjectAccess.

Definition at line 287 of file class.ilObjFileAccess.php.

                                                                       : void
    {
        $info = new ilObjFileInfoRepository();
        $info->preloadData($obj_ids);
    }

canBeDelivered()

ilObjFileAccess::canBeDelivered

(

ilWACPath

$ilWACPath

)

Reimplemented from ilObjectAccess.

Definition at line 57 of file class.ilObjFileAccess.php.

                                                        : bool
    {
        switch ($ilWACPath->getSecurePathId()) {
            case 'previews':
                preg_match('/\/previews\/[\d\/]{0,}\/preview_([\d]{0,})\//uU', $ilWACPath->getPath(), $matches);
                $obj_id = (int) $matches[1];
                break;
            default:
                $obj_id = -1;
                break;
        }
 
        return $this->checkAccessToObjectId($obj_id);
    }

References ilWACPath\getPath(), ilWACPath\getSecurePathId(), and ILIAS\Repository\int().

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Field Documentation

$inline_file_extensions

array ilObjFileAccess::$inline_file_extensions = []

staticprotected

Contains an array of extensions separated by space.

Since this array is needed for every file object displayed on a repository page, we only create it once, and cache it here.

Definition at line 36 of file class.ilObjFileAccess.php.

$preload_list_gui_data

array ilObjFileAccess::$preload_list_gui_data = []

staticprotected

Definition at line 38 of file class.ilObjFileAccess.php.

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The documentation for this class was generated from the following file:

• Modules/File/classes/class.ilObjFileAccess.php