Validating a file path is legal in eWAM

Question

What is the method in eWAM which will check if a path tFileName is valid? I tried CHDIR, however it is a procedure, is there not a function that returns Boolean?

Answer 1

Previous answer works, thank you for that. Here are some more options, for both validating a file and a directory.

 ;Validate the that a directory exists at that path.
 function ValidateFileDirectory(path : CString) return Boolean    
   uses wUtil

   var testPath : CString

;Given the path to a directory,it will return True if that directory exists.
;-Test if the path is valid before you write a file.
   testPath = wUtil.FGETDIR(path)
   if testPath = path
      _Result = True
   else
      _Result = False
      Alert(kw_BadPath)
      ;! it will return false if you give it a path to a file, even if the file exists.
   endIf
endFunc 

;Validate that the file exists there.
function ValidateFileExists(path : CString) return Boolean
   uses wUtil

   ;Given the path to a file, returns True if it finds the File.
   ;-test to make sure a file is there before you read,
   ;-test if a file was written.
   if wUtil.FGETNAME(path) <> ''
      _Result = True
   else
      Alert(kw_FileNotFound)
      _Result = False
   endIf
endFunc 

function TestOpenFile(path : CString) return Int4
   uses wUtil

   ;Returns 0 if it doesn't find a file, otherwise it returns a larger int4.  
   _Result = wUtil.T_OPEN(path)
   wUtil.T_CLOSE(_Result)
endFunc