fListFile (Function)

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Handling errors
Listing the subdirectories of a directory

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fListFile (Function)

In french: fListeFichier

Lists the files found in a directory and returns the list of files. The listed files are sought from the given directory.

Other use: For each file found, the fListFile function can automatically call a specific procedure written in WLanguage.. This procedure is used to handle the current file. In this case, fListFile returns the number of listed files.

Note: Under 64-bit Windows, access to a system directory from a 32-bit executable may be performed in a directory other than the expected one.. For more details, see Native 64-bit and native 32-bit.

Example

See additional examples

UnFichier, ResListeFichier are strings
// Liste les fichiers de type ".BMP" présents dans "C:\MesDocuments".
// Le parcours se fait également dans les sous-répertoires et est interruptible. 
ResListeFichier = fListFile("C:\MesDocuments\*.BMP", frRecursive + fdInterruptible)
// Pour chaque fichier trouvé
FOR EACH STRING UnFichier OF ResListeFichier SEPARATED BY CR
	// Ajout du fichier dans la table TABLE_TableFic
	TableAdd(TABLE_TableFic, UnFichier)
END

// Liste les fichiers de type ".BMP" présents dans "C:\MesDocuments".
// La procédure AttributFichier retourne le nombre de fichiers en lecture seule.
ResListeFichier = fListFile("C:\MesDocuments\*.BMP", "AttributFichier")

Syntax

Listing the files found in a directory Hide the details

<Result> = fListFile(<Path and generic name of files> , <Options>)

<Result>: Character string

Full name of listed files, separated by CR characters (Carriage Return).

Attention: The function returns files whose short or long name matches the filter.

<Path and generic name of files>: Character string

Path and generic name of files to list. Generic characters (* and?) are allowed. Special cases:
if directory and drive not specified: the search path is built up from the current drive and the current directory for that drive.
if the drive is not specified but the directory is: the search path is formed from the current drive and the directory passed as a parameter.
if the drive is specified while the directory is not specified, the search path is built from the specified drive and from the current directory for this drive.
This parameter can be in Ansi or Unicode format.

<Options>: Combination of Integer constants

Option used to define the information returned as well as the type of iteration performed for the directory files:
fdFullInformation Each line (separated by carriage return - CR) contains the following information:
<Nom du fichier complet> + TAB + <Taille en octets> + TAB +
<Date de dernière modification> + TAB + <Attributs du fichier>
The date is in YYYYMMDDHHmmSS format. The attributes are identical to the ones returned by fAttribute.
fdInterruptible The iteration can be interrupted by pressing ESC. The function will return the name of the listed files until the interruption.
frNoHiddenDirectory If the frFullInformation constant is used, the hidden directories are not listed (attribute = "H").
frNoHiddenFile If the frFullInformation constant is used, the hidden files are not listed (attribute = "H").
frNotRecursive The iteration is non-recursive. Subdirectories are ignored.
frRecursive
(Default value) The iteration is recursive. Subdirectories are automatically taken into account.
fUnicodePath <Result> will be a string in Unicode format.

Listing the files found in a directory by calling a procedure for each file Hide the details

<Result> = fListFile(<Path and generic name of files> , <WLanguage procedure> [, <Pointer> [, <Options>]])

<Result>: Integer

Number of listed files.

<Path and generic name of files>: Character string

Path and generic name of files to list. Generic characters (* and?) are allowed. Special cases:
if directory and drive not specified: the search path is built up from the current drive and the current directory for that drive.
if the drive is not specified but the directory is: the search path is formed from the current drive and the directory passed as a parameter.
if the drive is specified while the directory is not specified, the search path is built from the specified drive and from the current directory for this drive.

<WLanguage procedure>: Procedure name

Name of the WLanguage procedure ("callback") called for each listed file. This procedure is used to handle the current file. For more details on this procedure, see Parameters of the procedure used by fListFile.

<Pointer>: Optional integer

Pointer passed to <WLanguage procedure>.

<Options>: Optional Integer constant (or combination of constants)

Type of iteration performed for the directory files:
fdInterruptible The iteration can be interrupted by pressing ESC.
This constant has no effect.
frNotRecursive The iteration is non-recursive. Subdirectories are ignored.
frRecursive
(Default value) The iteration is recursive. Subdirectories are automatically taken into account.
fUnicodePath <Result> will be a string in Unicode format.

Remarks

Handling errors

Caution: fListFile does not return an error code.. To determine if this function has generated an error, use ErrorInfo with the errMessage constant.

Listing the subdirectories of a directory

To list the subdirectories of a directory, use fListDirectory.

Tip: It's also possible to list directories within a directory with the function fListFile.
Example:

fListFile("c:\temp\anim\.", proc) 
// Ne pas oublier le '.' à la fin de la chaîne pour identifier les répertoires

PROCEDURE proc(Rep, fichier, nChange, ptr) 
Trace(Rep)

Related Examples:

Unit examples (WINDEV): The fListFile function

[ + ] Using fListFile and its syntax that directly returns the list of files/directories found in string format.

Component: wd300std.dll