OS-RENAME statement

Executes an operating system file rename or directory rename command from within ABL.

Syntax 

 

OS-RENAME { source-filename | VALUE ( expression ) } { target-filename | VALUE ( expression ) }

source-filename

The name of the file or directory to rename.

VALUE ( expression )

An expression that returns the name of the file or directory to rename. expression can contain constants, field names, and variable names.

target-filename

The new name of the file or directory.

VALUE ( expression )

An expression that returns the new name of the file or directory. expression can contain constants, field names, and variable names.

Example 

This procedure opens a dialog box that prompts the user to choose a file to rename. It then prompts for a new name. Finally, the procedure uses the OS-RENAME statement to rename the file.

 

r-os-nam.p

DEFINE VARIABLE sourcefile AS CHARACTER NO-UNDO. DEFINE VARIABLE targetfile AS CHARACTER NO-UNDO FORMAT "x(20)"   VIEW-AS FILL-IN. DEFINE VARIABLE OKpressed  AS LOGICAL   NO-UNDO INITIAL TRUE.   Main: REPEAT: SYSTEM-DIALOG GET-FILE sourcefile TITLE "Choose a File or Directory to Rename" MUST-EXIST USE-FILENAME UPDATE OKpressed. IF OKpressed = FALSE THEN LEAVE Main. UPDATE targetfile WITH FRAME newnameframe. OS-RENAME VALUE(sourcefile) VALUE(targetfile). END.

Notes 

The filenames or directory names must conform to the naming conventions of the underlying operating system.

If source-filename and target-filename specify different directories, this statement both renames the file and moves it to the new directory.

Although an error can occur during execution of this statement, the statement does not generate an error message, raise an error condition, or affect the program’s flow in any way. Check for an execution error by using the OS-ERROR function and evaluating the return.

See also 

OS-ERROR function