Apropos

file-lengthFunction

    Syntax

    file-length stream length

    Arguments and Values

    stream — a stream associated with a file.

    length — a non-negative integer or nil.

    Description

    file-length returns the length of stream, or nil if the length cannot be determined.

    For a binary file, the length is measured in units of the element type of the stream.

    Examples
     (with-open-file (s "decimal-digits.text" 
                        :direction :output :if-exists :error) 
       (princ "0123456789" s) 
       (truename s)) 
     #P"A:>Joe>decimal-digits.text.1" 
     (with-open-file (s "decimal-digits.text") 
       (file-length s)) 
     10
    Exceptional Situations

    Should signal an error of type type-error if stream is not a stream associated with a file.

    See Also

    open