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docbook-style-dsssl-doc-1.79-16.mga7.noarch.rpm

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>directory-depth</H1
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>Name</H2
>directory-depth&nbsp;--&nbsp;Count the directory depth of a path name</DIV
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>Synopsis</H2
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>(directory-depth pathname)</PRE
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>Description</H2
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>Returns the number of directory levels in <TT
CLASS="LITERAL"
>pathname</TT
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>The pathname must end in a filename.
Further, this function assumes that directories in a pathname are 
separated by forward slashes ("/").</P
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>Example</H2
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>"filename" =&#62; 0, 
"foo/filename" =&#62; 1, 
"foo/bar/filename =&#62; 2, 
"foo/bar/../filename =&#62; 1.</P
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>Author</H2
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>Norman Walsh, &lt;ndw@nwalsh.com&gt;</P
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>(define (directory-depth pathname)
  ;; Count the directory depth of a path name
  (let loop ((count 0) (pathlist (match-split pathname "/")))
    (if (null? pathlist)
	(- count 1) ;; pathname should always end in a filename
	(if (or (equal? (car pathlist) "/") (equal? (car pathlist) "."))
	    (loop count (cdr pathlist))
	    (if (equal? (car pathlist) "..")
		(loop (- count 1) (cdr pathlist))
		(loop (+ count 1) (cdr pathlist)))))))</PRE
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