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-\documentclass{article}
-\usepackage{axiom}
-\begin{document}
-\title{\$SPAD/src/interp fname.lisp}
-\author{Stephen M. Watt, Timothy Daly}
-\maketitle
-\begin{abstract}
-\end{abstract}
-\eject
-\tableofcontents
-\eject
-\section{License}
-<<license>>=
-;; Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
-;; All rights reserved.
-;;
-;; Redistribution and use in source and binary forms, with or without
-;; modification, are permitted provided that the following conditions are
-;; met:
-;;
-;; - Redistributions of source code must retain the above copyright
-;; notice, this list of conditions and the following disclaimer.
-;;
-;; - Redistributions in binary form must reproduce the above copyright
-;; notice, this list of conditions and the following disclaimer in
-;; the documentation and/or other materials provided with the
-;; distribution.
-;;
-;; - Neither the name of The Numerical ALgorithms Group Ltd. nor the
-;; names of its contributors may be used to endorse or promote products
-;; derived from this software without specific prior written permission.
-;;
-;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-;; IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-;; TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-;; PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-;; OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-;; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-;; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-@
-<<*>>=
-<<license>>
-
-;;
-;; Lisp support for cleaned up FileName domain.
-;;
-;; Created: June 20, 1991 (Stephen Watt)
-;;
-
-(in-package "BOOT")
-
-;; E.g. "/" "/u/smwatt" "../src"
-(defun |DirToString| (d)
- (cond
- ((equal d '(:root)) "/")
- ((null d) "")
- ('t (string-right-trim "/" (namestring (make-pathname :directory d)))) ))
-
-(defun |StringToDir| (s)
- (cond
- ((string= s "/") '(:root))
- ((string= s "") nil)
- ('t
- (let ((lastc (aref s (- (length s) 1))))
- (if (char= lastc #\/)
- (pathname-directory (concat s "name.type"))
- (pathname-directory (concat s "/name.type")) ))) ))
-
-(defun |myWritable?| (s)
- (if (not (stringp s)) (|error| "``myWritable?'' requires a string arg."))
- (if (string= s "") (setq s "."))
- (if (not (|fnameExists?| s)) (setq s (|fnameDirectory| s)))
- (if (string= s "") (setq s "."))
- (if (> (|writeablep| s) 0) 't nil) )
-
-(defun |fnameMake| (d n e)
- (if (string= e "") (setq e nil))
- (make-pathname :directory (|StringToDir| d) :name n :type e))
-
-(defun |fnameDirectory| (f)
- (|DirToString| (pathname-directory f)))
-
-(defun |fnameName| (f)
- (let ((s (pathname-name f)))
- (if s s "") ))
-
-(defun |fnameType| (f)
- (let ((s (pathname-type f)))
- (if s s "") ))
-
-(defun |fnameExists?| (f)
- (if (probe-file (namestring f)) 't nil))
-
-(defun |fnameReadable?| (f)
-#+:CCL (file-readablep f)
-#-:CCL
- (let ((s (open f :direction :input :if-does-not-exist nil)))
- (cond (s (close s) 't) ('t nil)) )
- )
-
-(defun |fnameWritable?| (f)
- (|myWritable?| (namestring f)) )
-
-(defun |fnameNew| (d n e)
- (if (not (|myWritable?| d))
- nil
- (do ((fn))
- (nil)
- (setq fn (|fnameMake| d (string (gensym n)) e))
- (if (not (probe-file (namestring fn)))
- (return-from |fnameNew| fn)) )))
-@
-\eject
-\begin{thebibliography}{99}
-\bibitem{1} nothing
-\end{thebibliography}
-\end{document}