exists_return_file_existence_.htm
| Navigation: Language Reference > 13 - Built-in Functions >====== EXISTS (return file or folder existence) ====== |    |
EXISTS( file )
| EXISTS | Returns TRUE if the file is available on disk. |
| file | An expression containing the DOS filename. |
The EXISTS procedure returns true (1) if the file is available on disk. If the file is not available, EXISTS returns false (0). You can also use EXISTS to check for the existence of any folder.
| Return Data Type: | LONG |
Example:
SomeFile CSTRING(FILE:MaxFilePath),STATIC
Customer FILE,DRIVER('ASCII','/CLIP = on'),CREATE,NAME(SomeFile)
Record RECORD
_Line STRING(1024)
END
END
CODE
SomeFile = 'customer.tps'
IF EXISTS(SomeFile) !or EXISTS(NAME(Customer)) is also valid
OPEN(Customer)
ELSE
CREATE(Customer)
END
IF EXISTS('C:\Clarion\BIN\') !Is there a Clarion BIN folder
DO InstallCheck
END
See Also:
exists_return_file_existence_.htm.txt · Last modified: 2021/04/15 15:57 by 127.0.0.1