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ANSI Common Lisp  20 Files 20.2 Dictionary of Files
| 20.2.2 probe-file |
Function |
- Syntax:
-
probe-file
pathspec
 truename
- Arguments and Values:
-
pathspec - a pathname designator.
truename - a physical pathname or nil.
- Description:
-
probe-file tests whether a file exists.
probe-file returns false if there is no file named pathspec,
and otherwise returns the truename of pathspec.
If the pathspec designator is an open stream,
then probe-file produces the truename of its associated file.
If pathspec is a stream, whether open or closed,
it is coerced to a pathname as if by the function pathname.
- Affected By:
-
The host computer's file system.
- Exceptional Situations:
-
An error of type file-error is signaled if pathspec is wild.
An error of type file-error is signaled
if the file system cannot perform the requested operation.
- See Also:
-
truename,
open,
ensure-directories-exist,
pathname,
logical-pathname,
Section 20.1 File System Concepts,
Section 21.1.1.1.2 Open and Closed Streams,
Section 19.1.2 Pathnames as Filenames
- Allegro CL Implementation Details:
-
None.
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