Vim window logic, slimv

This commit is contained in:
Ian Keane 2020-02-24 20:27:04 -05:00
parent babcc9e44b
commit 515847d07e
791 changed files with 51552 additions and 86 deletions

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Version 0.7.6
2019-07-28
Clisp has renamed ext:delete-dir to ext:delete-directory.
Fix get-default-temporary-directory on lispworks.
Version 0.7.5
2017-12-10
Fix FILE-EXISTS-P to return directory truename in CLISP (chaitanyagupta)
Added support for Common Lisp implementation CLASP. (dg1sbg)
Version 0.7.4
2016-07-10
Merge pull request #13 from vibs29/master (Hans Hübner)
Make copy-stream work for CMUCL Gray Streams (vibs29)
Version 0.7.3
2014-11-28
remove version from cl-fad-test system (Hans Huebner)
update support information (Hans Huebner)
Version 0.7.2
2013-07-03
Fix documentation glitch (inconsistent download link) (Luís Oliveira)
Version 0.7.1
2013-02-18
Fix for LispWorks (R. Wilker)
Add :description to .asd file
Version 0.7.0
2013-01-23
Tests, pathname manipulation functions (Marco Baringer)
Temporary files (merged by Marco Baringer)
Fix symlink behaviour for some platforms (Mihai Bazon and Janis Dzerins)
Version 0.6.4
2010-11-18
Adapt to newer ClozureCL version (patch from Zach Beane, thanks to Chun Tian and Ralph Moritz as well)
Version 0.6.3
2009-09-30
Removed dependency on :SB-EXECUTABLE (thanks to Attila Lendvai and Tobias Rittweiler)
Version 0.6.2
2008-03-12
Never version of OpenMCL have %RMDIR (thanks to Dmitri Hrapof)
Version 0.6.1
2007-12-29
Integrated CLISP patch for LIST-DIRECTORY sent by Dan Muller
Version 0.6.0
2007-05-28
Support for Scieneer CL (patch from Douglas Crosher)
Version 0.5.2
2007-05-15
Fix for (newer versions of) ECL (patch from Dustin Long)
Version 0.5.1
2006-08-11
Added CHECKP to COPY-STREAM
Version 0.5.0
2006-04-21
Added :BREADTH-FIRST option to WALK-DIRECTORY (thanks to Mac Chan)
Version 0.4.3
2006-03-15
For CMUCL use TRUENAME with UNIX-RMDIR to cope with search lists (reported by Pawel Ostrowski)
Version 0.4.2
2006-01-04
WALK-DIRECTORY now catches circular symbolic links (thanks to Gary King)
Version 0.4.1
2006-01-03
Be more careful in DIRECTORY-WILDCARD (thanks to Gary King)
Patches for MCL (thanks to Gary King)
Version 0.4.0
2005-12-10
Exported COPY-STREAM (suggested by Chris Dean)
Version 0.3.3
2005-11-14
Fixed %RMDIR for newer versions of OpenMCL (thanks to James Bielman)
Version 0.3.2
2005-09-11
Fixed docs (correct name DELETE-DIRECTORY-AND-FILES)
Fixed docs (OVERWRITE was missing in COPY-FILE signature)
Added Debian link
Version 0.3.1
2005-06-02
Fixed typo in fad.lisp (thanks to Jack D. Unrue)
Version 0.3.0
2005-06-01
Support for ABCL (thanks to Jack D. Unrue)
Version 0.2.0
2005-05-29
Support for ECL (thanks to Maciek Pasternacki)
Version 0.1.3
2005-04-27
Changed implementation of DIRECTORY-EXISTS-P for LispWorks
Version 0.1.2
2005-03-17
Fixed typo in cl-fad.system (tanks to Andrew Philpot)
Version 0.1.1
2005-01-22
Fixed typos and versioning
Version 0.1.0
2005-01-22
Initial release

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;;; Copyright (c) 2004, Peter Seibel. All rights reserved.
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.

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Complete documentation for CL-FAD can be found in the 'docs'
directory or at <https://edicl.github.io/cl-fad/>.
CL-FAD also supports Nikodemus Siivola's HYPERDOC, see
<http://common-lisp.net/project/hyperdoc/> and
<http://www.cliki.net/hyperdoc>.
1. Installation
1.1. Probably the easiest way is
(load "/path/to/cl-fad/load.lisp")
This should compile and load CL-FAD on most Common Lisp
implementations.
1.2. With MK:DEFSYSTEM you can make a symbolic link from
'cl-fad.system' and 'cl-fad-test.system' to your central registry
(which by default is in '/usr/local/lisp/Registry/') and then issue
the command
(mk:compile-system "cl-fad")
Note that this relies on TRUENAME returning the original file a
symbolic link is pointing to. This will only work with AllegroCL
6.2 if you've applied all patches with (SYS:UPDATE-ALLEGRO).
1.3. You can also use ASDF instead of MK:DEFSYSTEM in a similar way
(use the .asd files instead of the .system files).
1.4. Via QuickLisp:
(ql:quickload :cl-fad)
2. Test
CL-FAD comes with a small test suite. To start it just load the file
"test.lisp" and evaluate (CL-FAD-TEST:TEST).

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-USER; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/cl-fad.asd,v 1.21 2009/09/30 14:23:09 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
#+:allegro (cl:require :osi)
(asdf:defsystem #:cl-fad
:version "0.7.6"
:description "Portable pathname library"
:serial t
:license "BSD-2-Clause"
:components ((:file "packages")
#+:cormanlisp (:file "corman")
#+:openmcl (:file "openmcl")
(:file "fad")
(:file "path" :depends-on ("fad"))
(:file "temporary-files" :depends-on ("fad")))
:depends-on (#+sbcl :sb-posix :bordeaux-threads :alexandria))
(asdf:defsystem #:cl-fad-test
:serial t
:components ((:file "packages.test")
(:file "fad.test" :depends-on ("packages.test"))
(:file "temporary-files.test" :depends-on ("packages.test")))
:depends-on (:cl-fad :unit-test :cl-ppcre))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-USER; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/cl-fad.system,v 1.8 2008/03/12 00:10:43 edi Exp $
;;; Copyright (c) 2005-2008, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package #:cl-user)
(defparameter *cl-fad-base-directory*
(make-pathname :name nil :type nil :version nil
:defaults (parse-namestring *load-truename*)))
#+:allegro (require :osi)
#+:sbcl (require :sb-executable)
#+:sbcl (require :sb-posix)
(mk:defsystem #:cl-fad
:source-pathname *cl-fad-base-directory*
:source-extension "lisp"
:components ((:file "packages")
#+:cormanlisp (:file "corman" :depends-on ("packages"))
#+:openmcl (:file "openmcl" :depends-on ("packages"))
(:file "fad" :depends-on ("packages"
#+:cormanlisp "corman"
#+:openmcl "openmcl"))))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/corman.lisp,v 1.5 2009/09/30 14:23:09 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package :cl)
(defun wild-pathname-p (pathspec &optional field)
(unless (pathnamep pathspec)
(setq pathspec (pathname pathspec)))
(labels ((name-wild-p (name)
(or (eq :wild name)
(and (stringp name)
(string= "*" name))))
(dir-wild-p (dir)
(or (find :wild dir)
(find :wild-inferiors dir)
(find "*" dir :test #'string=))))
(case field
((:name)
(name-wild-p (pathname-name pathspec)))
((:type)
(name-wild-p (pathname-type pathspec)))
((:directory)
(dir-wild-p (pathname-directory pathspec)))
((nil)
(or (name-wild-p (pathname-name pathspec))
(name-wild-p (pathname-type pathspec))
(dir-wild-p (pathname-directory pathspec))))
(t nil))))
(defun file-namestring (pathspec)
(flet ((string-list-for-component (component)
(cond ((eq component :wild)
(list "*"))
(component
(list component))
(t nil))))
(let* ((pathname (pathname pathspec))
(name (pathnames::pathname-internal-name pathname))
(type (pathnames::pathname-internal-type pathname)))
(format nil "~{~A~}~{.~A~}"
(string-list-for-component name)
(string-list-for-component type)))))
(in-package :win32)
(defwinapi RemoveDirectory
((lpPathName LPCSTR))
:return-type BOOL
:library-name "Kernel32"
:entry-name "RemoveDirectoryA"
:linkage-type :pascal)
(defun delete-directory (pathspec)
"Deletes the empty directory denoted by the pathname designator
PATHSPEC. Returns true if successful, NIL otherwise."
(win:RemoveDirectory
(ct:lisp-string-to-c-string
(namestring (pathname pathspec)))))
(export 'delete-directory)

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>CL-FAD - A portable pathname library for Common Lisp</title>
<style type="text/css">
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<h2>CL-FAD - A portable pathname library for Common Lisp</h2>
<blockquote>
<br>&nbsp;<br><h3><a name=abstract class=none>Abstract</a></h3>
CL-FAD (for "<font color=red>F</font>iles <font color=red>a</font>nd
<font color=red>D</font>irectories") is a thin layer atop Common
Lisp's standard pathname functions. It is intended to provide some
unification between current CL implementations on Windows, OS X,
Linux, and Unix. Most of the code was written by Peter Seibel for his book <a href="http://www.gigamonkeys.com/book/"><em>Practical Common Lisp</em></a>.
<p>
CL-FAD comes with a <a
href="http://www.opensource.org/licenses/bsd-license.php">BSD-style
license</a> so you can basically do with it whatever you want.
<p>
<font color=red>Download shortcut:</font> <a href="http://weitz.de/files/cl-fad.tar.gz">http://weitz.de/files/cl-fad.tar.gz</a>.
</blockquote>
<br>&nbsp;<br><h3><a class=none name="contents">Contents</a></h3>
<ol>
<li><a href="#download">Download and installation</a>
<li><a href="#implementations">Supported Lisp implementations</a>
<li><a href="#dictionary">The CL-FAD dictionary</a>
<ol>
<li><a href="#querying">Querying files, directories and pathnames</a>
<ol>
<li><a href="#directory-exists-p"><code>directory-exists-p</code> [function]</a>
<li><a href="#directory-pathname-p"><code>directory-pathname-p</code> [function]</a>
<li><a href="#file-exists-p"><code>file-exists-p</code> [function]</a>
<li><a href="#pathname-absolute-p"><code>pathname-absolute-p</code> [function]</a>
<li><a href="#pathname-equal"><code>pathname-equal</code> [function]</a>
<li><a href="#pathname-relative-p"><code>pathname-relative-p</code> [function]</a>
<li><a href="#pathname-root-p"><code>pathname-root-p</code> [function]</a>
</ol> </li>
<li><a href="#manipulating">Manipulating pathnames</a>
<ol>
<li><a href="#canonical-pathname"><code>canonical-pathname</code> [function]</a>
<li><a href="#merge-pathnames-as-directory"><code>merge-pathnames-as-directory</code> [function]</a>
<li><a href="#merge-pathnames-as-file"><code>merge-pathnames-as-file</code> [function]</a>
<li><a href="#pathname-as-directory"><code>pathname-as-directory</code> [function]</a>
<li><a href="#pathname-as-file"><code>pathname-as-file</code> [function]</a>
<li><a href="#pathname-directory-pathname"><code>pathname-directory-pathname</code> [function]</a>
<li><a href="#pathname-parent-directory"><code>pathname-parent-directory</code> [function]</a>
</ol> </li>
<li><a href="#traversing">Traversing directories</a>
<ol>
<li><a href="#list-directory"><code>list-directory</code> [function]</a>
<li><a href="#walk-directory"><code>walk-directory</code> [function]</a>
</ol> </li>
<li><a href="#temporary-files">Temporary Files</a>
<ol>
<li><a href="#open-temporary"><code>open-temporary</code> [function]</a>
<li><a href="#with-output-to-temporary-file"><code>with-output-to-temporary-file</code> [macro]</a>
<li><a href="#with-open-temporary-file"><code>with-open-temporary-file</code> [macro]</a>
<li><a href="#star-default-template-star"><code>*default-template*</code> [variable]</a>
<li><a href="#cannot-create-temporary-file"><code>cannot-create-temporary-file</code> [condition]</a>
<li><a href="#invalid-temporary-pathname-template"><code>invalid-temporary-pathname-template</code> [condition]</a>
<li><a href="#missing-temp-environment-variable"><code>missing-temp-environment-variable</code> [condition]</a>
<li><a href="#lp-host-temporary-files"><code>temporary-files</code> [logical pathname host]</a>
</ol>
</li>
<li><a href="#modifying">Modifying the file system</a>
<ol>
<li><a href="#copy-file"><code>copy-file</code> [function]</a>
<li><a href="#copy-stream"><code>copy-stream</code> [function]</a>
<li><a href="#delete-directory-and-files"><code>delete-directory-and-files</code> [function]</a>
</ol> </li>
<li><a href="#package-path"><code>path</code> [package]</a>
</ol>
<li><a href="#ack">Acknowledgements</a>
</ol>
<br>&nbsp;<br><h3><a class=none name="download">Download and installation</a></h3>
CL-FAD together with this documentation can be downloaded from <a
href="https://github.com/edicl/cl-fad/releases/latest">https://github.com/edicl/cl-fad/releases/latest</a>. The
current version is 0.7.6.
<p>
CL-FAD comes with simple system definitions for <a
href="http://www.cliki.net/mk-defsystem">MK:DEFSYSTEM</a> and <a
href="http://www.cliki.net/asdf">asdf</a> so you can either adapt it
to your needs or just unpack the archive and from within the CL-FAD
directory start your Lisp image and evaluate the form
<code>(mk:compile-system&nbsp;&quot;cl-fad&quot;)</code> - or <code>(asdf:oos&nbsp;'asdf:load-op&nbsp;:cl-fad)</code> for asdf - which should compile and load the whole
system.
Installation via <a
href="http://www.cliki.net/asdf-install">asdf-install</a> should as well
be possible. Plus, there are ports
for <a href="http://www.gentoo.org/proj/en/common-lisp/index.xml">Gentoo Linux</a> thanks to Matthew Kennedy
and for <a href="http://packages.debian.org/cgi-bin/search_packages.pl?keywords=cl-fad&amp;searchon=names&amp;subword=1&amp;version=all&amp;release=all">Debian Linux</a> thanks to Ren&eacute; van Bevern.
<p>
If for some reason you can't or don't want to use MK:DEFSYSTEM or asdf you
can just <code>LOAD</code> the file <code>load.lisp</code>.
<p>
The latest version of the source code lives in the github repository <a href="https://github.com/edicl/cl-fad">edicl/cl-fad</a>.
If you want to send patches,
please <a href="http://weitz.de/patches.html">read this first</a>.
Please submit your changes
as <a href="https://github.com/edicl/cl-fad/pulls">GitHub pull
request"</a>.
<br>&nbsp;<br><h3><a class=none name="implementations">Supported Lisp implementations</a></h3>
<p>
The following Common Lisp implementations are currently supported:
<ul>
<li><a href="http://armedbear.org/abcl.html">Armed Bear Common Lisp</a>
<li><a href="http://www.cons.org/cmucl/">CMUCL</a>
<li><a href="http://www.cormanlisp.com/">Corman Common Lisp</a>
<li><a href="http://ecls.sf.net/">ECL</a>
<li><a href="http://www.franz.com/products/allegrocl/">Franz AllegroCL</a>
<li><a href="http://clisp.cons.org/">GNU CLISP</a>
<li><a href="http://www.lispworks.com/">LispWorks</a>
<li><a href="http://www.digitool.com/">Macintosh Common Lisp</a>
<li><a href="http://openmcl.clozure.com/">OpenMCL</a>
<li><a href="http://www.scieneer.com/scl/">Scieneer Common Lisp</a>
<li><a href="http://sbcl.sourceforge.net/">Steel Bank Common Lisp</a>
</ul>
I'll gladly accepts patches to make CL-FAD work on other platforms.
<br>&nbsp;<br><h3><a class=none name="dictionary">The CL-FAD dictionary</a></h3>
<h4><a class=none name="querying">Querying files, directories and pathnames</a></h4>
<p><br>[Function]
<br><a class=none name="directory-exists-p"><b>directory-exists-p</b> <i> pathspec </i> =&gt; <i> generalized-boolean</i></a>
<blockquote><br>
Checks whether the file named by the <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>pathspec</i></code>
exists and if it is a directory. Returns its <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_t.htm#truename">truename</a> if this is the
case, <code>NIL</code> otherwise. The truename is returned in <em>directory form</em> as if
by <a href="#pathname-as-directory"><code>PATHNAME-AS-DIRECTORY</code></a>.
</blockquote>
<p><br>[Function]
<br><a class=none name="directory-pathname-p"><b>directory-pathname-p</b> <i> pathspec </i> =&gt; <i> generalized-boolean</i></a>
<blockquote><br>
Returns <code>NIL</code> if <code><i>pathspec</i></code> (a <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a>) does not designate
a directory, <code><i>pathspec</i></code> otherwise. It is irrelevant whether the file or
directory designated by <code><i>pathspec</i></code> does actually exist.
</blockquote>
<p><br>[Function]
<br><a class=none name="file-exists-p"><b>file-exists-p</b> <i> pathspec </i> =&gt; <i> generalized-boolean</i></a>
<blockquote><br>
Checks whether the file named by the <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>pathspec</i></code>
exists and returns its <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_t.htm#truename">truename</a> if this is the case, <code>NIL</code> otherwise.
The truename is returned in "canonical" form, i.e. the truename of a
directory is returned in <em>directory form</em> as if by <a href="#pathname-as-directory"><code>PATHNAME-AS-DIRECTORY</code></a>.
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-absolute-p'><b>pathname-absolute-p</b> <i>a</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns true if <code><i>a</i></code> is an absolute pathname. This simply
tests if <code><i>a</i></code>&#039;s directory list starts with <code>:ABSOLUTE</code></p>
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-equal'><b>pathname-equal</b> <i>a b</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns <em>true</em> if <code><i>a</i></code> and <code><i>b</i></code>
represent the same pathname. This function does not access the
filesystem, it only looks at the components of the two pathnames to
test if they are the same (though by passing both <code><i>a</i></code>
and <code><i>b</i></code> to probe-file one can make this function test for
file &#039;sameness&#039;.</p>
<p>Equality is defined as:</p>
<ul>
<li>strings that are <code>string=</code>
<li>symbols (including <code>nil</code> and keywords) which are <code>eql</code>
<li>lists of the same length with equal (as per these rules) elements.
</ul>
<p>If any of these tree conditions is false for any of the components in
<code><i>a</i></code> and <code><i>b</i></code> then <code><i>a</i></code>
and <code><i>b</i></code> are different, otherwise they are the same.</p>
<p><em>NB:</em> This function does not convert name strings to pathnames. So
&quot;foo.txt&quot; and #P&quot;foo.txt&quot; are different pathnames.</p>
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-relative-p'><b>pathname-relative-p</b> <i>a</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns true if <code><i>a</i></code> is a relative pathname. This simply
tests if <code><i>a</i></code>&#039;s directory starts
with <code>:RELATIVE</code>.</p>
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-root-p'><b>pathname-root-p</b> <i>a</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns <em>true</em> if <code><i>pathname</i></code> is the root
directory (in other words, a directory which is its own parent).</p>
</blockquote>
<h4><a class=none name="manipulating">Manipulating pathnames</a></h4>
<p><br>[Function]<br><a class=none name='canonical-pathname'><b>canonical-pathname</b> <i>pathname</i> =&gt; <i>result</i></a>
<blockquote>
<p>Remove redundant information from PATHNAME.</p>
<p>This simply walks down <code>PATHNAME</code>&#039;s
pathname-directory and drops &quot;.&quot; directories, removes :back
and its preceding element.</p>
<p>NB: This function does not access the filesystem, it only looks at the
values in the pathname and works on their known (or assumed)
meanings.</p>
<p>NB: Since this function does not access the filesystem it will only
remove <code>:BACK</code> elements from the path (not <code>:UP</code>
elements). Since some lisps, ccl/sbcl/clisp convert &quot;..&quot; in
pathnames to <code>:UP</code>, and not <code>:BACK</code>, the actual
utility of the function is limited.</p>
</blockquote>
<p><br>[Function]<br><a class=none name='merge-pathnames-as-directory'><b>merge-pathnames-as-directory</b> <i><tt>&amp;rest</tt> pathnames</i> =&gt; <i>result</i></a>
<blockquote>
<p>Given a list of (probably relative) pathnames, this returns a single
directory pathname containing the logical concatenation of them all.</p>
<p>The returned value is the current directory if one were to cd into
each of <code><i>pathnames</i></code> in order. For this reason an
absolute pathname will, effectively, cancel the affect of any previous
relative pathnames.</p>
<p>The returned value&#039;s defaults are taken from the first element of
<code><i>pathnames</i></code> (host, version and device).</p>
<p><em>NB:</em> Since this function only looks at directory names the name and
type of the elements of <code><i>pathnames</i></code> are ignored. Make sure to properly
use either trailing #\/s, or <a href="#pathname-as-directory">pathname-as-directory</a>, to get the
expected results.</p>
<p>Examples:</p>
<pre>
(merge-pathnames-as-directory #P&quot;foo/&quot; #P&quot;bar/&quot;) == #P&quot;foo/bar/&quot;
(merge-pathnames-as-directory #P&quot;foo/&quot; #P&quot;./bar/&quot;) == #P&quot;foo/./bar/&quot;
(merge-pathnames-as-directory #P&quot;foo/&quot; #P&quot;/bar/&quot;) == #P&quot;/bar/&quot;
(merge-pathnames-as-directory #P&quot;foo/&quot; #P&quot;/bar/&quot; #P&#039;quux/file.txt) == #P&quot;/bar/quux/&quot;
</pre>
</blockquote>
<p><br>[Function]<br><a class=none name='merge-pathnames-as-file'><b>merge-pathnames-as-file</b> <i><tt>&amp;rest</tt> pathnames</i> =&gt; <i>result</i></a>
<blockquote>
<p>Given a list of, probably relative, pathnames returns a single
filename pathname containing the logical concatenation of them all.</p>
<p>The returned value&#039;s defaults are taken from the first element of
<code><i>pathnames</i></code> (host, version and device). The returned
values&#039;s name, type and version are taken from the last element
of <code><i>pathnames</i></code>. The intervening elements are used only for
their pathname-directory values.</p>
Examples:
<pre>
(merge-pathnames-as-file #P&quot;foo/&quot; #P&quot;bar.txt&quot;) == #P&quot;foo/bar.txt&quot;
(merge-pathnames-as-file #P&quot;foo/&quot; #P&quot;./bar.txt&quot;) == #P&quot;foo/./bar.txt&quot;
(merge-pathnames-as-file #P&quot;foo/&quot; #P&quot;/bar/README&quot;) == #P&quot;/bar/README&quot;
(merge-pathnames-as-file #P&quot;/foo/&quot; #P&quot;/bar/&quot; #P&#039;quux/file.txt) == #P&quot;/bar/quux/file.txt&quot;
</pre>
</blockquote>
<p><br>[Function]
<br><a class=none name="pathname-as-directory"><b>pathname-as-directory</b> <i> pathspec </i> =&gt; <i> pathname</i></a>
<blockquote><br>
Converts the <em>non-wild</em> <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>pathspec</i></code> to <em>directory form</em>, i.e. it returns a <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname">pathname</a> which would return a <em>true</em> value if fed to <a href="#directory-pathname-p"><code>DIRECTORY-PATHNAME-P</code></a>.
</blockquote>
<p><br>[Function]
<br><a class=none name="pathname-as-file"><b>pathname-as-file</b> <i> pathspec </i> =&gt; <i> pathname</i></a>
<blockquote><br>
Converts the <em>non-wild</em> <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>pathspec</i></code> to <em>file form</em>, i.e. it returns a <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname">pathname</a> which would return a <code>NIL</code> value if fed to <a href="#directory-pathname-p"><code>DIRECTORY-PATHNAME-P</code></a>.
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-directory-pathname'><b>pathname-directory-pathname</b> <i>pathname</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns a complete pathname representing the directory of
<code><i>pathname</i></code>. If <code><i>pathname</i></code> is
already a directory pathname
(<code>name</code> <code>nil</code>, <code>type</code>
<code>nil</code>) returns a pathname equal (as
per <a href="#pathname-equal">pathname-equal</a>) to it.</p>
</blockquote>
<p><br>[Function]<br><a class=none name='pathname-parent-directory'><b>pathname-parent-directory</b> <i>pathname</i> =&gt; <i>result</i></a>
<blockquote>
<p>Returns a pathname which would, by name at least,
contain <code><i>pathname</i></code> as one of its direct
children. Symlinks can make the parent/child relationship a like
opaque, but generally speaking the value returned by this function is
a directory name which contains <code><i>pathname</i></code>.</p>
<p>The root directory, #P&quot;/&quot;, is its own parent. The parent
directory of a filename is the parent of the filename&#039;s
dirname.</p>
</blockquote>
<h4><a class=none name="traversing">Traversing directories</a></h4>
<p><br>[Function]
<br><a class=none name="list-directory"><b>list-directory</b> <i> dirname <tt>&amp;key</tt> follow-symlinks</i> =&gt; <i> list</i></a>
<blockquote><br>
<p>
Returns a <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_f.htm#fresh">fresh</a> list of pathnames corresponding to
all files within the directory named by the non-wild <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>dirname</i></code>. The pathnames of sub-directories are returned in
<em>directory form</em> - see <a href="#pathname-as-directory"><code>PATHNAME-AS-DIRECTORY</code></a>.
</p>
<p>
If <code><i>follow-symlinks</i></code> is true (which is the
default), then the returned list contains truenames (symlinks will
be resolved) which essentially means that it might also return files
from <b>outside</b> the directory. This works on all platforms.
</p>
<p>
When <code><i>follow-symlinks</i></code> is <code>NIL</code>, it should return the actual directory
contents, which might include symlinks. (This is currently implemented only on SBCL and CCL.)
</p>
</blockquote>
<p><br>[Function]
<br><a class=none name="walk-directory"><b>walk-directory</b> <i> dirname fn <tt>&amp;key</tt> directories if-does-not-exist test follow-symlinks</i> =&gt; |</a>
<blockquote><br>
<p>
Recursively applies the function designated by the <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_f.htm#function_designator">function
designator</a> <code><i>fn</i></code> to all files within the directory named
by the non-wild <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname
designator</a> <code><i>dirname</i></code> and all of its sub-directories. <code><i>fn</i></code>
will only be applied to files for which the function <code><i>test</i></code>
returns a <em>true</em> value. (The default value for <code><i>test</i></code>
always returns <em>true</em>.) If <code><i>directories</i></code> is not <code>NIL</code>,
<code><i>fn</i></code> and <code><i>test</i></code> are applied to directories
as well. If <code><i>directories</i></code> is <code>:DEPTH-FIRST</code>, <code><i>fn</i></code>
will be applied to the directory's contents first. If <code><i>directories</i></code>
is <code>:BREADTH-FIRST</code> and <code><i>test</i></code> returns <code>NIL</code>, the
directory's content will be skipped. <code><i>if-does-not-exist</i></code> must
be one of <code>:ERROR</code> or <code>:IGNORE</code> where <code>:ERROR</code>
(the default) means that an error will be signaled if the directory <code><i>dirname</i></code>
does not exist.
</p>
<p>
If <code><i>follow-symlinks</i></code> is true (which is
the default), then your callback will receive truenames. Otherwise
you should get the actual directory contents, which might include
symlinks. This might not be supported on all platforms. See
<a href="#list-directory"><code>LIST-DIRECTORY</code></a>.
</p>
</blockquote>
<h4><a class=none name="temporary-files">Temporary Files</a></h4>
<h5>Synopsis</h5>
<p>
Create a temporary file and return its name:
<pre>CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-output-to-temporary-file">with-output-to-temporary-file</a></code> (foo)
(print "hello" foo))
#P"/var/folders/Yu/YuNMNBNPGoqs9G-1Wmj1dk+++TI/-Tmp-/temp-yjck024x"</pre>
</p>
<p>
Create a temporary file, read and write it, have it be deleted
automatically:
<pre>CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-open-temporary-file">with-open-temporary-file</a></code> (foo :direction :io)
(print "hello" foo)
(file-position foo 0)
(read foo))
"hello"</pre>
</p>
<h5><a class="none" name="default-temporary-directory">Default temporary file directory</a></h5>
By default, temporary files are created in a system specific
directory that defaults based on operating system conventions. On
Unix and Unix-like systems, the directory <tt>/tmp/</tt> is used
by default. It can be overridden by setting the <tt>TMPDIR</tt>
environment variable. On Windows, the value of the environment
variable <tt>TEMP</tt> is used. If it is not set, temporary file
creation will fail.
<h5><a class="none" name="defining-temporary-directory">Defining the temporary file directory</a></h5>
<p>
The Lisp application can set the default directory in which
temporary files are created by the way of the
<code xmlns=""><a href="#temporary-files">temporary-files</a></code> logical pathname host:
<pre>(setf (<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_logica.htm">logical-pathname-translations</a> "<code xmlns=""><a href="#temporary-files">temporary-files</a></code>") '(("*.*.*" "/var/tmp/")))</pre>
This would set the directory for temporary files to
<tt>/var/tmp/</tt>. For more information about logical
pathnames, please refer to <a href="http://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/html/cltl/clm/node208.html#SECTION002715000000000000000">Common
Lisp the Language, 2nd Edition</a> and the <a href="http://clhs.lisp.se/Body/19_.htm">Common Lisp
HyperSpec</a>.
</p>
<p>
Physical path names have restrictions regarding the permitted
character in file names. If these restrictions conflict with
your desired naming scheme, you can pass a physical pathname as
TEMPLATE parameter to the temporary file generation function.
</p>
<p>
Here are a few examples:
<pre>CL-USER&gt; (<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_logica.htm">logical-pathname-translations</a> "temporary-files")
(("*.*.*" #P"/var/folders/Yu/YuNMNBNPGoqs9G-1Wmj1dk+++TI/-Tmp-/"))
CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-open-temporary-file">with-open-temporary-file</a></code> (foo)
(<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_pn.htm">pathname</a> foo))
#P"/var/folders/Yu/YuNMNBNPGoqs9G-1Wmj1dk+++TI/-Tmp-/temp-6rdqdkd1"</pre>
This used the temporary directory established in the TMPDIR
environment variable, by the way of the definition of the
temporary-files logical host definition.
<pre>CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-open-temporary-file">with-open-temporary-file</a></code> (foo :template "/tmp/file.with.dots.in.name.%.txt")
(<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_pn.htm">pathname</a> foo))
#P"/tmp/file.with.dots.in.name.2EF04KUJ.txt"</pre>
Here, a physical pathname was used for the
<code xmlns=""><i>:template</i></code> keyword argument so that a
filename containing multiple dots could be generated.
<pre>CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-open-temporary-file">with-open-temporary-file</a></code> (foo :template "temporary-files:blah-%.txt")
(<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_pn.htm">pathname</a> foo))
#P"/var/folders/Yu/YuNMNBNPGoqs9G-1Wmj1dk+++TI/-Tmp-/blah-72mj450d.txt"</pre>
This used the temporary-files logical pathname host, but changed
the filename slightly.
<pre>CL-USER&gt; *default-pathname-defaults*
#P"/Users/hans/"
CL-USER&gt; (temporary-file:<code xmlns=""><a href="#with-open-temporary-file">with-open-temporary-file</a></code> (foo :template "blah-%.txt")
(<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_pn.htm">pathname</a> foo))
#P"/Users/hans/blah-5OEJELG2.txt"</pre>
Here, a relative pathname was used in the template, which
caused the file to be generated in the directory established
by <a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/v_defaul.htm">*default-pathname-defaults*</a>.
</p>
<p>
Alternatively, the <code xmlns=""><a href="#*default-template*">*default-template*</a></code>
special variable can be set to define a custom default template
for generating names.
</p>
<h5 xmlns=""><a class="none" name="security">Security</a></h5>
The TEMPORARY-FILE library does not directly address security
issues. The application that uses it needs to take additional
measures if it is important that files created by one process
cannot be accessed by other, unrelated processes. This can be
done by using the system dependent security mechanisms like
default file permissions or access control lists.
<h5>Dictionary</h5>
<p xmlns="">[Function]<br><a class="none" name="open-temporary"><b>open-temporary</b> <i><clix:lambda-list xmlns:clix="http://bknr.net/clixdoc"><tt>&amp;rest</tt> open-arguments <tt>&amp;key</tt> template generate-random-string max-tries <tt>&amp;allow-other-keys</tt></clix:lambda-list></i>
=&gt;
<i>stream</i></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
<p xmlns="http://www.w3.org/1999/xhtml">
Create a file with a randomly generated name and return the
opened stream. The resulting pathname is generated from
<code xmlns=""><i>template</i></code>, which is a string
representing a pathname template. A percent sign (%) in
that string is replaced by a randomly generated string to
make the filename unique. The default for
<code xmlns=""><i>template</i></code> places temporary files in the
<code xmlns=""><a href="#temporary-files">temporary-files</a></code> logical pathname host,
which is automatically set up in a system specific manner.
The file name generated from <code xmlns=""><i>template</i></code>
is merged with <a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/v_defaul.htm">*default-pathname-defaults*</a>,
so random pathnames relative to that directory can be
generated by not specifying a directory in
<code xmlns=""><i>template</i></code>.
</p>
<p xmlns="http://www.w3.org/1999/xhtml">
<code xmlns=""><i>generate-random-string</i></code> can be passed to
override the default function that generates the random name
component. It should return a random string consisting of
characters that are permitted in a pathname (logical or
physical, depending on <code xmlns=""><i>template</i></code>).
</p>
<p xmlns="http://www.w3.org/1999/xhtml">
The name of the temporary file can be accessed calling the
<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_pn.htm">pathname</a>
function on <code xmlns=""><i>stream</i></code>. For convenience,
the temporary file is opened on the physical pathname,
i.e. if the <code xmlns=""><i>template</i></code> designate a
logical pathname the translation to a physical pathname is
performed before opening the stream.
</p>
<p xmlns="http://www.w3.org/1999/xhtml">
In order to create a unique file name,
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> may loop internally up
to <code xmlns=""><i>max-tries</i></code> times before giving up and
signalling a
<code xmlns=""><a href="#cannot-create-temporary-file">cannot-create-temporary-file</a></code> condition.
</p>
<p xmlns="http://www.w3.org/1999/xhtml">
Any unrecognized keyword arguments are passed to the call to
<a xmlns="" href="http://www.lispworks.com/documentation/HyperSpec/Body/f_open.htm">open</a>.
</p>
</clix:description></blockquote></p>
<p xmlns="">[Macro]<br><a class="none" name="with-output-to-temporary-file"><b>with-output-to-temporary-file</b> <i><clix:lambda-list xmlns:clix="http://bknr.net/clixdoc">(stream <tt>&amp;rest</tt> args) <tt>&amp;body</tt> body</clix:lambda-list></i>
=&gt;
<i>pathname</i></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
Create a temporary file using
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> with
<code xmlns=""><i>args</i></code> and run <code xmlns=""><i>body</i></code>
with <code xmlns=""><i>stream</i></code> bound to the temporary file
stream. Returns the pathname of the file that has been
created. See <code xmlns=""><a href="#open-temporary">open-temporary</a></code> for
permitted options.
</clix:description></blockquote></p>
<p xmlns="">[Macro]<br><a class="none" name="with-open-temporary-file"><b>with-open-temporary-file</b> <i><clix:lambda-list xmlns:clix="http://bknr.net/clixdoc">(stream <tt>&amp;rest</tt> args <tt>&amp;key</tt> keep <tt>&amp;allow-other-keys</tt>) <tt>&amp;body</tt> body</clix:lambda-list></i>
=&gt;
<i>values</i></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
Create a temporary file using
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> with
<code xmlns=""><i>args</i></code> and run <code xmlns=""><i>body</i></code>
with <code xmlns=""><i>stream</i></code> bound to the temporary file
stream. Returns the values returned by
<code xmlns=""><i>body</i></code>. By default, the file is deleted
when <code xmlns=""><i>body</i></code> is exited. If a true value is
passed in <code xmlns=""><i>keep</i></code>, the file is not deleted
when the body is exited. See
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> for more permitted
options.
</clix:description></blockquote></p>
<p xmlns="">
[Special variable]<br><a class="none" name="*default-template*"><b>*default-template*</b></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
This variable can be set to a string representing the desired
default template for temporary file name generation. See
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> for a description of the
template string format.
</clix:description></blockquote></p>
<p xmlns="">
[Condition type]<br><a class="none" name="cannot-create-temporary-file"><b>cannot-create-temporary-file</b></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
Signalled when an attempt to create unique temporary file name
failed after the established number of retries.
</clix:description></blockquote></p>
<p xmlns="">
[Condition type]<br><a class="none" name="invalid-temporary-pathname-template"><b>invalid-temporary-pathname-template</b></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
Signalled when the <code xmlns=""><i>template</i></code> argument to
<code xmlns=""><a href="#open-temporary">open-temporary</a></code> does not contain a valid
template string. The template string must contain a percent
sign, which is replaced by the generated random string to
yield the filename.
</clix:description></blockquote></p>
<p xmlns="">
[Condition type]<br><a class="none" name="missing-temp-environment-variable"><b>missing-temp-environment-variable</b></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
(Windows only) Signalled when the TEMP environment variable is
not set.
</clix:description></blockquote></p>
<p xmlns="">
[Logical Pathname Host]<br><a class="none" name="lp-host-temporary-files"><b>temporary-files</b></a><blockquote><clix:description xmlns:clix="http://bknr.net/clixdoc">
This logical pathname host defines where temporary files are
stored by default. It is initialized in a suitable system
specific fashion: On Unix and Unix-like systems, the directory
specified in the TMPDIR environment variable is used. If that
variable is not set, /tmp is used as the default. On Windows,
the directory specified in the TEMP environment variable is
used. If it is not set, a
<code xmlns=""><a href="#missing-temp-environment-variable">missing-temp-environment-variable</a></code> error
is signalled.
</clix:description></blockquote></p>
<h4><a class=none name="modifying">Modifying the file system</a></h4>
<p><br>[Function]
<br><a class=none name="copy-file"><b>copy-file</b> <i> from to <tt>&amp;key</tt> overwrite</i> =&gt; |</a>
<blockquote><br>
Copies the file designated by the non-wild <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>from</i></code> to the
file designated by the non-wild <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>to</i></code>. If <code><i>overwrite</i></code> is <em>true</em> (the default is <code>NIL</code>)
overwrites the file designated by <code><i>to</i></code> if it exists.
</blockquote>
<p><br>[Function]
<br><a class=none name="copy-stream"><b>copy-stream</b> <i> from to <tt>&amp;optional</tt> checkp</i> =&gt; |</a>
<blockquote><br> Copies into <code><i>to</i></code> (a stream)
from <code><i>from</i></code> (also a stream) until the end
of <code><i>from</i></code> is reached. The streams should have the
same <a
href="http://www.lispworks.com/documentation/HyperSpec/Body/f_stm_el.htm">element
type</a> unless they are bivalent. If <code><i>checkp</i></code> is
true (which is the default), the function will signal an error if the
element types aren't the same.
</blockquote>
<p><br>[Function]
<br><a class=none name="delete-directory-and-files"><b>delete-directory-and-files</b> <i> dirname <tt>&amp;key</tt> if-does-not-exist</i> =&gt; |</a>
<blockquote><br>
<p>
Recursively deletes all files and directories within the directory
designated by the non-wild <a href="http://www.lispworks.com/documentation/HyperSpec/Body/26_glo_p.htm#pathname_designator">pathname designator</a> <code><i>dirname</i></code> including
<code><i>dirname</i></code> itself. <code><i>if-does-not-exist</i></code> must be one of <code>:ERROR</code> or <code>:IGNORE</code>
where <code>:ERROR</code> (the default) means that an error will be signaled if the directory
<code><i>dirname</i></code> does not exist.
</p>
<p>
<b>Warning:</b> this function <em>might</em> remove files from outside the
directory, if the directory that you are deleting contains links to
external files. This is currently fixed for SBCL and CCL.
</p>
</blockquote>
<h4>The <code>PATH</code> package</h4>
<p><br>[Package]
<br><a class=none name="package-path">(defpackage <b>path</b>)</a>
<blockquote>
Provides a set of short names for commonly used pathname manipulation
functions (these are all functions from the <code>cl-fad</code>
package which are being exported under different names):
<dl>
<dt><code>dirname</code></dt> <dd><a href="#pathname-as-directory">pathname-as-directory</a></dd>
<dt><code>basename</code></dt> <dd><code>cl:file-namestring</code></dd>
<dt><code>-e</code></dt> <dd><a href="#file-exists-p">file-exists-p</a></dd>
<dt><code>-d</code></dt> <dd><a href="#directory-exists-p">directory-exists-p</a></dd>
<dt><code>catfile</code></dt> <dd><a href="#merge-pathnames-as-file">merge-pathnames-as-file</a></dd>
<dt><code>catdir</code></dt> <dd><a href="#merge-pathnames-as-directory">merge-pathnames-as-directory</a></dd>
<dt><code>rm-r</code></dt> <dd><a href="#delete-directory-and-files">delete-directory-and-files</a></dd>
<dt><code>=</code></dt> <dd><a href="#pathname-equal">pathname-equal</a></dd>
<dt><code>absolute-p</code></dt> <dd><a href="#pathname-absolute-p">pathname-absolute-p</a></dd>
<dt><code>relative-p</code></dt> <dd><a href="#pathname-relative-p">pathname-relative-p</a></dd>
<dt><code>root-p</code></dt> <dd><a href="#pathname-root-p">pathname-root-p</a></dd>
</dl>
</blockquote>
<br>&nbsp;<br><h3><a class=none name="ack">Acknowledgements</a></h3>
The original code for this library was written by Peter Seibel for his
book <a href="http://www.gigamonkeys.com/book/"><em>Practical Common
Lisp</em></a>. I added some stuff and made sure it worked properly on
Windows, specifically with CCL. Thanks to James Bielman, Maciek
Pasternacki, Jack D. Unrue, Gary King, and Douglas Crosher who sent
patches for OpenMCL, ECL, ABCL, MCL, and Scieneer&nbsp;CL.
<p>
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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-FAD; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/fad.lisp,v 1.35 2009/09/30 14:23:10 edi Exp $
;;; Copyright (c) 2004, Peter Seibel. All rights reserved.
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package :cl-fad)
(defun component-present-p (value)
"Helper function for DIRECTORY-PATHNAME-P which checks whether VALUE
is neither NIL nor the keyword :UNSPECIFIC."
(and value (not (eql value :unspecific))))
(defun directory-pathname-p (pathspec)
"Returns NIL if PATHSPEC \(a pathname designator) does not designate
a directory, PATHSPEC otherwise. It is irrelevant whether file or
directory designated by PATHSPEC does actually exist."
(and
(not (component-present-p (pathname-name pathspec)))
(not (component-present-p (pathname-type pathspec)))
pathspec))
(defun pathname-as-directory (pathspec)
"Converts the non-wild pathname designator PATHSPEC to directory
form."
(let ((pathname (pathname pathspec)))
(when (wild-pathname-p pathname)
(error "Can't reliably convert wild pathnames."))
(cond ((not (directory-pathname-p pathspec))
(make-pathname :directory (append (or (pathname-directory pathname)
(list :relative))
(list (file-namestring pathname)))
:name nil
:type nil
:defaults pathname))
(t pathname))))
(defun directory-wildcard (dirname)
"Returns a wild pathname designator that designates all files within
the directory named by the non-wild pathname designator DIRNAME."
(when (wild-pathname-p dirname)
(error "Can only make wildcard directories from non-wildcard directories."))
(make-pathname :name #-:cormanlisp :wild #+:cormanlisp "*"
:type #-(or :clisp :cormanlisp) :wild
#+:clisp nil
#+:cormanlisp "*"
:defaults (pathname-as-directory dirname)))
#+:clisp
(defun clisp-subdirectories-wildcard (wildcard)
"Creates a wild pathname specifically for CLISP such that
sub-directories are returned by DIRECTORY."
(make-pathname :directory (append (pathname-directory wildcard)
(list :wild))
:name nil
:type nil
:defaults wildcard))
(defun list-directory (dirname &key (follow-symlinks t))
"Returns a fresh list of pathnames corresponding to all files within
the directory named by the non-wild pathname designator DIRNAME.
The pathnames of sub-directories are returned in directory form -
see PATHNAME-AS-DIRECTORY.
If FOLLOW-SYMLINKS is true, then the returned list contains
truenames (symlinks will be resolved) which essentially means that it
might also return files from *outside* the directory. This works on
all platforms.
When FOLLOW-SYMLINKS is NIL, it should return the actual directory
contents, which might include symlinks. Currently this works on SBCL
and CCL."
(declare (ignorable follow-symlinks))
(when (wild-pathname-p dirname)
(error "Can only list concrete directory names."))
#+(or :ecl :clasp)
(let ((dir (pathname-as-directory dirname)))
(concatenate 'list
(directory (merge-pathnames (pathname "*/") dir))
(directory (merge-pathnames (pathname "*.*") dir))))
#-(or :ecl :clasp)
(let ((wildcard (directory-wildcard dirname)))
#+:abcl (system::list-directory dirname)
#+:sbcl (directory wildcard :resolve-symlinks follow-symlinks)
#+(or :cmu :scl :lispworks) (directory wildcard)
#+(or :openmcl :digitool) (directory wildcard :directories t :follow-links follow-symlinks)
#+:allegro (directory wildcard :directories-are-files nil)
#+:clisp (nconc (directory wildcard :if-does-not-exist :keep)
(directory (clisp-subdirectories-wildcard wildcard)))
#+:cormanlisp (nconc (directory wildcard)
(cl::directory-subdirs dirname)))
#-(or :sbcl :cmu :scl :lispworks :openmcl :allegro :clisp :cormanlisp :ecl :abcl :digitool :clasp)
(error "LIST-DIRECTORY not implemented"))
(defun pathname-as-file (pathspec)
"Converts the non-wild pathname designator PATHSPEC to file form."
(let ((pathname (pathname pathspec)))
(when (wild-pathname-p pathname)
(error "Can't reliably convert wild pathnames."))
(cond ((directory-pathname-p pathspec)
(let* ((directory (pathname-directory pathname))
(name-and-type (pathname (first (last directory)))))
(make-pathname :directory (butlast directory)
:name (pathname-name name-and-type)
:type (pathname-type name-and-type)
:defaults pathname)))
(t pathname))))
(defun file-exists-p (pathspec)
"Checks whether the file named by the pathname designator PATHSPEC
exists and returns its truename if this is the case, NIL otherwise.
The truename is returned in `canonical' form, i.e. the truename of a
directory is returned as if by PATHNAME-AS-DIRECTORY."
#+(or :sbcl :lispworks :openmcl :ecl :digitool clasp) (probe-file pathspec)
#+:allegro (or (excl:probe-directory (pathname-as-directory pathspec))
(probe-file pathspec))
#+(or :cmu :scl :abcl) (or (probe-file (pathname-as-directory pathspec))
(probe-file pathspec))
#+:cormanlisp (or (and (ccl:directory-p pathspec)
(pathname-as-directory pathspec))
(probe-file pathspec))
#+:clisp (or (ignore-errors
(let ((directory-form (pathname-as-directory pathspec)))
(when (ext:probe-directory directory-form)
(truename directory-form))))
(ignore-errors
(probe-file (pathname-as-file pathspec))))
#-(or :sbcl :cmu :scl :lispworks :openmcl :allegro :clisp :cormanlisp :ecl :abcl :digitool :clasp)
(error "FILE-EXISTS-P not implemented"))
(defun directory-exists-p (pathspec)
"Checks whether the file named by the pathname designator PATHSPEC
exists and if it is a directory. Returns its truename if this is the
case, NIL otherwise. The truename is returned in directory form as if
by PATHNAME-AS-DIRECTORY."
#+:allegro
(and (excl:probe-directory pathspec)
(pathname-as-directory (truename pathspec)))
#+:lispworks
(and (lw:file-directory-p pathspec)
(pathname-as-directory (truename pathspec)))
#-(or :allegro :lispworks)
(let ((result (file-exists-p pathspec)))
(and result
(directory-pathname-p result)
result)))
(defun walk-directory (dirname fn &key directories
(if-does-not-exist :error)
(test (constantly t))
(follow-symlinks t))
"Recursively applies the function FN to all files within the
directory named by the non-wild pathname designator DIRNAME and all of
its sub-directories. FN will only be applied to files for which the
function TEST returns a true value. If DIRECTORIES is not NIL, FN and
TEST are applied to directories as well. If DIRECTORIES
is :DEPTH-FIRST, FN will be applied to the directory's contents first.
If DIRECTORIES is :BREADTH-FIRST and TEST returns NIL, the directory's
content will be skipped. IF-DOES-NOT-EXIST must be one of :ERROR
or :IGNORE where :ERROR means that an error will be signaled if the
directory DIRNAME does not exist. If FOLLOW-SYMLINKS is T, then your
callback will receive truenames. Otherwise you should get the actual
directory contents, which might include symlinks. This might not be
supported on all platforms. See LIST-DIRECTORY."
(labels ((walk (name)
(cond
((directory-pathname-p name)
;; the code is written in a slightly awkward way for
;; backward compatibility
(cond ((not directories)
(dolist (file (list-directory name :follow-symlinks follow-symlinks))
(walk file)))
((eql directories :breadth-first)
(when (funcall test name)
(funcall fn name)
(dolist (file (list-directory name :follow-symlinks follow-symlinks))
(walk file))))
;; :DEPTH-FIRST is implicit
(t (dolist (file (list-directory name :follow-symlinks follow-symlinks))
(walk file))
(when (funcall test name)
(funcall fn name)))))
((funcall test name)
(funcall fn name)))))
(let ((pathname-as-directory (pathname-as-directory dirname)))
(case if-does-not-exist
((:error)
(cond ((not (file-exists-p pathname-as-directory))
(error "File ~S does not exist."
pathname-as-directory))
(t (walk pathname-as-directory))))
((:ignore)
(when (file-exists-p pathname-as-directory)
(walk pathname-as-directory)))
(otherwise
(error "IF-DOES-NOT-EXIST must be one of :ERROR or :IGNORE."))))
(values)))
(defvar *stream-buffer-size* 8192)
(defun copy-stream (from to &optional (checkp t))
"Copies into TO \(a stream) from FROM \(also a stream) until the end
of FROM is reached, in blocks of *stream-buffer-size*. The streams
should have the same element type. If CHECKP is true, the streams are
checked for compatibility of their types."
(when checkp
(unless (subtypep (stream-element-type to) (stream-element-type from))
(error "Incompatible streams ~A and ~A." from to)))
(let ((buf (make-array *stream-buffer-size*
:element-type (stream-element-type from))))
(loop
(let ((pos #-:clisp (read-sequence buf from)
#+:clisp (ext:read-byte-sequence buf from :no-hang nil)))
(when (zerop pos) (return))
(write-sequence buf to :end pos))))
(values))
(defun copy-file (from to &key overwrite)
"Copies the file designated by the non-wild pathname designator FROM
to the file designated by the non-wild pathname designator TO. If
OVERWRITE is true overwrites the file designated by TO if it exists."
#+:allegro (excl.osi:copy-file from to :overwrite overwrite)
#-:allegro
(let ((element-type #-:cormanlisp '(unsigned-byte 8)
#+:cormanlisp 'unsigned-byte))
(with-open-file (in from :element-type element-type)
(with-open-file (out to :element-type element-type
:direction :output
:if-exists (if overwrite
:supersede
#-:cormanlisp :error
#+:cormanlisp nil))
#+:cormanlisp
(unless out
(error (make-condition 'file-error
:pathname to
:format-control "File already exists.")))
(copy-stream in out))))
(values))
(defun delete-directory-and-files (dirname &key (if-does-not-exist :error))
"Recursively deletes all files and directories within the directory
designated by the non-wild pathname designator DIRNAME including
DIRNAME itself. IF-DOES-NOT-EXIST must be one of :ERROR or :IGNORE
where :ERROR means that an error will be signaled if the directory
DIRNAME does not exist.
NOTE: this function is dangerous if the directory that you are
removing contains symlinks to files outside of it - the target files
might be removed instead! This is currently fixed for SBCL and CCL."
#+:allegro (excl.osi:delete-directory-and-files dirname
:if-does-not-exist if-does-not-exist)
#+:sbcl
(if (directory-exists-p dirname)
(sb-ext:delete-directory dirname :recursive t)
(ecase if-does-not-exist
(:error (error "~S is not a directory" dirname))
(:ignore nil)))
#+:ccl-has-delete-directory
(if (directory-exists-p dirname)
(ccl:delete-directory dirname)
(ecase if-does-not-exist
(:error (error "~S is not a directory" dirname))
(:ignore nil)))
#-(or :allegro :sbcl :ccl-has-delete-directory)
(walk-directory dirname
(lambda (file)
(cond ((directory-pathname-p file)
#+:lispworks (lw:delete-directory file)
#+:cmu (multiple-value-bind (ok err-number)
(unix:unix-rmdir (namestring (truename file)))
(unless ok
(error "Error number ~A when trying to delete ~A"
err-number file)))
#+:scl (multiple-value-bind (ok errno)
(unix:unix-rmdir (ext:unix-namestring (truename file)))
(unless ok
(error "~@<Error deleting ~S: ~A~@:>"
file (unix:get-unix-error-msg errno))))
#+:clisp (ext:delete-directory file)
#+:openmcl (cl-fad-ccl:delete-directory file)
#+:cormanlisp (win32:delete-directory file)
#+:ecl (si:rmdir file)
#+:clasp (core:rmdir file)
#+(or :abcl :digitool) (delete-file file))
(t (delete-file file))))
:follow-symlinks nil
:directories t
:if-does-not-exist if-does-not-exist)
(values))
(defun pathname-directory-pathname (pathname)
"Returns a complete pathname representing the directory of
PATHNAME. If PATHNAME is already a directory pathname (name NIL, type
NIL) returns a pathname equal (as per pathname=) to it."
(make-pathname :defaults pathname
:name nil :type nil))
(defun pathname-parent-directory (pathname)
"Returns a pathname which would, by name at least, contain PATHNAME
as one of its direct children. Symlinks can make the parent/child
relationship a like opaque, but generally speaking the value returned
by this function is a directory name which contains PATHNAME.
The root directory, #P\"/\", is its own parent. The parent directory
of a filename is the parent of the filename's dirname."
(canonical-pathname
(make-pathname :defaults pathname
:directory (if (pathname-root-p pathname)
(list :absolute)
(append (or (pathname-directory pathname)
(list :relative))
(list :back))))))
(defun canonical-pathname (pathname)
"Remove redundant information from PATHNAME.
This simply walks down PATHNAME's pathname-directory and drops \".\"
directories, removes :back and its preceding element.
NB: This function does not access the filesystem, it only looks at the
values in the pathname and works on their known (or assumed)
meanings.
NB: Since this function does not access the filesystem it will only
remove :BACK elements from the path (not :UP elements). Since some
lisps, ccl/sbcl/clisp convert \"..\" in pathnames to :UP, and
not :BACK, the actual utility of the function is limited."
(let ((pathname (pathname pathname))) ;; just make sure to get a pathname object
(loop
with full-dir = (or (pathname-directory pathname)
(list :relative))
with canon-dir = (if (member (first full-dir) '(:relative :absolute))
(list (pop full-dir))
(list :relative))
while full-dir
do (cond
((string= "." (first full-dir))
(pop full-dir))
((eql :back (second full-dir))
(pop full-dir)
(pop full-dir))
(t (push (pop full-dir) canon-dir)))
finally (return (make-pathname :defaults pathname :directory (nreverse canon-dir))))))
(defun merge-pathnames-as-directory (&rest pathnames)
"Given a list of (probably relative) pathnames, this returns a single
directory pathname containing the logical concatenation of them all.
The returned value is the current directory if one were to cd into
each of PATHNAMES in order. For this reason an absolute pathname will,
effectively, cancel the affect of any previous relative pathnames.
The returned value's defaults are taken from the first element of
PATHNAMES (host, version and device).
NB: Since this function only looks at directory names the name and
type of the elements of PATHNAMES are ignored. Make sure to properly
use either trailing #\\/s, or pathname-as-directory, to get the
expected results.
Examples:
(merge-pathnames-as-directory #P\"foo/\" #P\"bar/\") == #P\"foo/bar/\"
(merge-pathnames-as-directory #P\"foo/\" #P\"./bar/\") == #P\"foo/./bar/\"
(merge-pathnames-as-directory #P\"foo/\" #P\"/bar/\") == #P\"/bar/\"
(merge-pathnames-as-directory #P\"foo/\" #P\"/bar/\" #P\"quux/file.txt\") == #P\"/bar/quux/\"
"
(if pathnames
(let* ((pathnames (mapcar #'pathname pathnames))
(defaults (first pathnames))
(dir (pathname-directory defaults)))
(loop for pathname in (rest pathnames)
for directory = (pathname-directory pathname)
do (ecase (first directory)
;; this is equivalent to (:relative) == ".", so,
;; for this function, just do nothing.
((nil))
(:absolute
(setf dir directory))
(:relative
(setf dir (append dir (rest directory))))))
(make-pathname :defaults defaults :directory dir :name nil :type nil))
(make-pathname)))
(defun merge-pathnames-as-file (&rest pathnames)
"Given a list of, probably relative, pathnames returns a single
filename pathname containing the logical concatenation of them all.
The returned value's defaults are taken from the first element of
PATHNAMES (host, version and device). The returned values's name, type
and version are taken from the last element of PATHNAMES. The
intervening elements are used only for their pathname-directory
values.
Examples:
(merge-pathnames-as-file #P\"foo/\" #P\"bar.txt\") == #P\"foo/bar.txt\"
(merge-pathnames-as-file #P\"foo/\" #P\"./bar.txt\") == #P\"foo/./bar.txt\"
(merge-pathnames-as-file #P\"foo/\" #P\"/bar/README\") == #P\"/bar/README\"
(merge-pathnames-as-file #P\"/foo/\" #P\"/bar/\" #P\"quux/file.txt\") == #P\"/bar/quux/file.txt\"
"
(cond ((null pathnames)
(make-pathname))
((null (cdr pathnames))
(pathname-as-file (first pathnames)))
(t
(let ((file-name-part (first (last pathnames))))
(make-pathname :defaults (apply #'merge-pathnames-as-directory pathnames)
:name (pathname-name file-name-part)
:type (pathname-type file-name-part)
:version (pathname-version file-name-part))))))
(defmacro with-component-testers ((a b key) &body body)
(let ((k (gensym)))
`(let* ((,k ,key)
(,a (funcall ,k ,a))
(,b (funcall ,k ,b)))
(labels ((components-are (test)
(and (funcall test ,a) (funcall test ,b)))
(components-are-member (values)
(and (member ,a values :test #'eql)
(member ,b values :test #'eql)
(eql ,a ,b)))
(components-are-string= ()
(and (stringp ,a) (stringp ,b) (string= ,a ,b)))
(components-are-every (test)
(and (consp ,a)
(consp ,b)
(every test ,a ,b))))
(declare (ignorable #'components-are #'components-are-member
#'components-are-string= #'components-are-every))
(if (or ,@body)
(values t ,a ,b)
nil)))))
(defun pathname-host-equal (a b)
(with-component-testers (a b #'pathname-host)
(eq a b)
(components-are-member '(nil :unspecific))
(components-are-string=)
(components-are-every #'string=)))
(defun pathname-device-equal (a b)
(with-component-testers (a b #'pathname-device)
(components-are-member '(nil :unspecific))
(components-are-string=)))
(defun pathname-directory-equal (a b)
(with-component-testers (a b #'pathname-directory)
(and (null a) (null b))
(and (= (length a) (length b))
(every (lambda (a b)
(or (and (stringp a) (stringp b) (string= a b))
(and (null a) (null b))
(and (keywordp a) (keywordp b) (eql a b))))
a b))))
(defun pathname-name-equal (a b)
(with-component-testers (a b #'pathname-name)
(components-are-member '(nil :wild :unspecific))
(components-are-string=)))
(defun pathname-type-equal (a b)
(with-component-testers (a b #'pathname-type)
(components-are-member '(nil :wild :unspecific))
(components-are-string=)))
(defun pathname-version-equal (a b)
(with-component-testers (a b #'pathname-version)
(and (null a) (null b))
(components-are-member '(:wild :newest :unspecific))
(and (integerp a) (integerp b) (= a b))))
(defun pathname-equal (a b)
"Returns T if A and B represent the same pathname. This function
does not access the filesystem, it only looks at the components of the
two pathnames to test if they are the same (though by
passing both A and B to probe-file one can make this function test for file 'sameness'.
Equality is defined as:
- strings that are string equal
- symbol (including nil) or keywords which are eql
- lists of the same length with equal (as per these rules) elements.
if any of these tree conditions is false for any of the components in
A and B then A and B are different, otherwise they are the same.
NB: This function does not convert name strings to pathnames. So
\"foo.txt\" and #P\"foo.txt\" are different pathnames."
(if (and a b)
(if (and (pathname-host-equal a b)
(pathname-device-equal a b)
(pathname-directory-equal a b)
(pathname-name-equal a b)
(pathname-type-equal a b)
(pathname-version-equal a b))
(values t a b)
(values nil))
(values nil)))
(defun pathname-absolute-p (a)
"Returns true if A is an absolute pathname.
This simply tests if A's directory list starts with :ABSOLUTE"
(eql :absolute (first (pathname-directory (pathname a)))))
(defun pathname-relative-p (a)
"Returns true if A is a relative pathname.
This simply tests if A's directory starts with :RELATIVE."
(let ((dir (pathname-directory (pathname a))))
(or (null dir) (eql :relative (first dir)))))
(defun pathname-root-p (a)
(let ((dir (pathname-directory (pathname a))))
(and (eql :absolute (first dir))
(= 1 (length dir)))))
(pushnew :cl-fad *features*)
;; stuff for Nikodemus Siivola's HYPERDOC
;; see <http://common-lisp.net/project/hyperdoc/>
;; and <http://www.cliki.net/hyperdoc>
;; also used by LW-ADD-ONS
#-:abcl
(defvar *hyperdoc-base-uri* "http://weitz.de/cl-fad/")
#-:abcl
(let ((exported-symbols-alist
(loop for symbol being the external-symbols of :cl-fad
collect (cons symbol
(concatenate 'string
"#"
(string-downcase symbol))))))
(defun hyperdoc-lookup (symbol type)
(declare (ignore type))
(cdr (assoc symbol
exported-symbols-alist
:test #'eq))))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-FAD-TEST; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/test.lisp,v 1.12 2009/09/30 14:23:10 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package #:cl-fad-test)
(defparameter *tmp-dir*
#+(or :win32 :mswindows :windows) "c:\\tmp\\"
#-(or :win32 :mswindows :windows) "/tmp/")
(defvar *test-counter* 0)
(defmacro assert* (form)
`(progn
(format t "Trying to assert ~A~%" ',form)
(assert ,form)
(format t "Test ~A passed.~%" (incf *test-counter*))))
(defun test ()
(setq *test-counter* 0)
(assert* (path:= (path:catdir) #P""))
(assert* (path:= (path:catdir #P"/") #P"/"))
(assert* (path:= (path:catdir #P"a/" #P"b/") #P"a/b/"))
(assert* (path:= (path:catdir #P"/a/" #P"/b/" #P"c/" #P"./d/" #P"e" #P"f/") #P"/b/c/./d/f/"))
(assert* (path:= (path:catfile) #P""))
(assert* (path:= (path:catfile #P"R.txt") #P"R.txt"))
(assert* (path:= (path:catfile #P"a/" #P"/b/" #P"R.txt") #P"/b/R.txt"))
(let ((fad-dir (merge-pathnames (pathname-as-directory "fad-test")
*tmp-dir*)))
(delete-directory-and-files fad-dir :if-does-not-exist :ignore)
(assert* (directory-pathname-p fad-dir))
(assert* (directory-pathname-p (pathname *tmp-dir*)))
(let ((foo-file (merge-pathnames "foo.lisp"
fad-dir)))
(assert* (not (directory-pathname-p foo-file)))
(assert* (not (file-exists-p foo-file)))
(assert* (not (file-exists-p fad-dir)))
(with-open-file (out (ensure-directories-exist foo-file)
:direction :output
:if-does-not-exist :create)
(write-string "NIL" out))
(assert* (file-exists-p foo-file))
(assert* (not (directory-exists-p foo-file)))
(assert* (file-exists-p fad-dir))
(assert* (directory-exists-p fad-dir))
(assert* (equal fad-dir
(pathname-as-directory fad-dir)))
(assert* (equal foo-file
(pathname-as-file foo-file)))
(assert* (not (equal fad-dir
(pathname-as-file fad-dir))))
(assert* (not (equal foo-file
(pathname-as-directory foo-file))))
(dolist (name '("bar" "baz"))
(let ((dir (merge-pathnames (pathname-as-directory name)
fad-dir)))
(dolist (name '("foo.text" "bar.lisp"))
(let ((file (merge-pathnames name dir)))
(with-open-file (out (ensure-directories-exist file)
:direction :output
:if-does-not-exist :create)
(write-string "NIL" out))))))
;; /tmp/fad-test/foo.lisp
;; /tmp/fad-test/bar/bar.lisp
;; /tmp/fad-test/bar/foo.text
;; /tmp/fad-test/baz/bar.lisp
;; /tmp/fad-test/baz/foo.text
;; files : 5
;; dirs : 3
(let ((file-counter 0)
(file-and-dir-counter 0)
(bar-counter 0))
(walk-directory fad-dir
(lambda (file)
(declare (ignore file))
(incf file-counter)))
;; file-counter => 5
(walk-directory fad-dir
(lambda (file)
(declare (ignore file))
(incf file-and-dir-counter))
:directories t)
;; file-and-dir-counter => 5 + 3
(walk-directory fad-dir
(lambda (file)
(declare (ignore file))
(incf bar-counter))
:test (lambda (file)
(string= (pathname-name file)
"bar"))
:directories t)
;; do not traverse the baz directory
(walk-directory fad-dir
(lambda (file)
(declare (ignore file))
(incf file-and-dir-counter))
:test (lambda (file)
(not (and (directory-pathname-p file)
(string= (first (last (pathname-directory file)))
"baz"))))
:directories :breadth-first)
;; file-and-dir-counter => 5 + 3 + 2 dirs + 3 files
(assert* (= 5 file-counter))
(assert* (= 13 file-and-dir-counter))
(assert* (= 2 bar-counter)))
(let ((bar-file (merge-pathnames "bar.lisp" fad-dir)))
(copy-file foo-file bar-file)
(assert* (file-exists-p bar-file))
(with-open-file (foo-stream foo-file :element-type '(unsigned-byte 8))
(with-open-file (bar-stream bar-file :element-type '(unsigned-byte 8))
(assert* (= (file-length foo-stream)
(file-length bar-stream)))
(loop for foo-byte = (read-byte foo-stream nil nil)
for bar-byte = (read-byte bar-stream nil nil)
while (and foo-byte bar-byte)
do (assert* (eql foo-byte bar-byte))))))
(let ((baz-dir (merge-pathnames (pathname-as-directory "baz")
fad-dir))
(list (mapcar #'namestring (list-directory fad-dir))))
(assert* (find (namestring (truename foo-file)) list :test #'string=))
(assert* (find (namestring (truename baz-dir)) list :test #'string=))
(assert* (not (find (namestring (pathname-as-file baz-dir))
list
:test #'string=)))))
(delete-directory-and-files fad-dir :if-does-not-exist :error)
(assert* (not (file-exists-p fad-dir)))
(assert* (not (directory-exists-p fad-dir))))
(format t "All tests passed.~%"))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-USER; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/load.lisp,v 1.9 2009/09/30 14:23:10 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package :cl-user)
(defparameter *cl-fad-base-directory*
(make-pathname :name nil :type nil :version nil
:defaults (parse-namestring *load-truename*)))
#+:allegro (require :osi)
#+:sbcl (require :sb-executable)
#+:sbcl (require :sb-posix)
(let ((cl-fad-base-directory
(make-pathname :name nil :type nil :version nil
:defaults (parse-namestring *load-truename*))))
(let (must-compile)
#+:cormanlisp (declare (ignore must-compile))
(dolist (file '("packages"
#+:cormanlisp "corman"
#+:openmcl "openmcl"
"fad"))
(let ((pathname (make-pathname :name file :type "lisp" :version nil
:defaults cl-fad-base-directory)))
;; don't use COMPILE-FILE in Corman Lisp, it's broken - LOAD
;; will yield compiled functions anyway
#-:cormanlisp
(let ((compiled-pathname (compile-file-pathname pathname)))
(unless (and (not must-compile)
(probe-file compiled-pathname)
(< (file-write-date pathname)
(file-write-date compiled-pathname)))
(setq must-compile t)
(compile-file pathname))
(setq pathname compiled-pathname))
(load pathname)))))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CCL; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/openmcl.lisp,v 1.6 2009/09/30 14:23:10 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package :cl-fad)
(eval-when (:compile-toplevel :load-toplevel :execute)
(flet ((ccl-function-feature (symbol-name feature)
(let ((symbol (find-symbol symbol-name :ccl)))
(when (and symbol (fboundp symbol))
(pushnew feature *features*)))))
(ccl-function-feature "%RMDIR" :ccl-has-%rmdir)
(ccl-function-feature "DELETE-DIRECTORY" :ccl-has-delete-directory)))
(defpackage :cl-fad-ccl
(:use :cl)
(:export delete-directory)
(:import-from :ccl
:%realpath
:signal-file-error
:native-translated-namestring
:with-cstrs)
#+ccl-has-%rmdir
(:import-from :ccl :%rmdir)
#+ccl-has-delete-directory
(:import-from :ccl :delete-directory))
(in-package :cl-fad-ccl)
#-ccl-has-%rmdir
(defun %rmdir (name)
(with-cstrs ((n name))
(#_rmdir n)))
;;; ClozureCL 1.6 introduced ccl:delete-directory with semantics that
;;; are acceptably similar to this "legacy" definition.
;;;
;;; Except this legacy definition is not recursive, hence this function is
;;; used only if there is no :CCL-HAS-DELETE-DIRECTORY feature.
#-ccl-has-delete-directory
(defun delete-directory (path)
(let* ((namestring (native-translated-namestring path)))
(when (%realpath namestring)
(let* ((err (%rmdir namestring)))
(or (eql 0 err) (signal-file-error err path))))))

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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-USER; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-fad/packages.lisp,v 1.12 2009/09/30 14:23:10 edi Exp $
;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package #:cl-user)
(defpackage :cl-fad
(:nicknames :fad)
(:use :cl)
#+:allegro
(:shadow :copy-file
:delete-directory-and-files)
#+:abcl
(:shadow :list-directory)
(:export :copy-file
:copy-stream
:delete-directory-and-files
:directory-exists-p
:directory-pathname-p
:file-exists-p
:list-directory
:pathname-as-directory
:pathname-as-file
:pathname-directory-pathname
:pathname-equal
:pathname-parent-directory
:pathname-absolute-p
:pathname-relative-p
:pathname-root-p
:canonical-pathname
:merge-pathnames-as-directory
:merge-pathnames-as-file
:walk-directory
:open-temporary
:with-output-to-temporary-file
:with-open-temporary-file
:*default-template*
:invalid-temporary-pathname-template
:cannot-create-temporary-file
#+win32 #:missing-temp-environment-variable))
(defpackage :path
(:use)
(:documentation "Rexporting certain functions from the cl-fad package with shorter names.
This package provides no functionality, it serves only to make file
system intensive code easier to read (for unix people at least).")
(:export #:dirname
#:basename
#:-e
#:-d
#:catfile
#:catdir
#:rm-r
#:=
#:absolute-p
#:relative-p
#:root-p))

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(in-package :common-lisp-user)
(defpackage :cl-fad-test
(:use :cl :cl-fad :unit-test)
(:export :test))

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(in-package :cl-fad)
(defmacro defalias (name args realname)
`(progn
(defun ,name ,args
,(if (eql '&rest (first args))
`(apply #',realname ,(second args))
`(,realname ,@args)))
(define-compiler-macro ,name (&rest args)
(list* ',realname args))))
(defalias path:dirname (pathname) cl-fad:pathname-directory-pathname)
(defun path:basename (pathname) (pathname (file-namestring pathname)))
(defalias path:-e (pathname) cl-fad:file-exists-p)
(defalias path:-d (directory) cl-fad:directory-exists-p)
(defalias path:catfile (&rest pathnames) cl-fad:merge-pathnames-as-file)
(defalias path:catdir (&rest pathnames) cl-fad:merge-pathnames-as-directory)
(defalias path:= (a b) cl-fad:pathname-equal)
(defalias path:absolute-p (pathname) cl-fad:pathname-absolute-p)
(defalias path:relative-p (pathname) cl-fad:pathname-relative-p)
(defalias path:root-p (pathname) cl-fad:pathname-root-p)
(defalias path:rm-r (pathname) cl-fad:delete-directory-and-files)

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(in-package :cl-fad)
(defparameter *default-template* "TEMPORARY-FILES:TEMP-%")
(defparameter *max-tries* 10000)
(defvar *name-random-state* (make-random-state t))
;; from XCVB
(eval-when (:load-toplevel :execute)
(defun getenv (x)
"Query the libc runtime environment. See getenv(3)."
(declare (ignorable x))
#+(or abcl clisp xcl) (ext:getenv x)
#+allegro (sys:getenv x)
#+clozure (ccl:getenv x)
#+(or cmu scl) (cdr (assoc x ext:*environment-list* :test #'string=))
#+cormanlisp
(let* ((buffer (ct:malloc 1))
(cname (ct:lisp-string-to-c-string x))
(needed-size (win:getenvironmentvariable cname buffer 0))
(buffer1 (ct:malloc (1+ needed-size))))
(prog1 (if (zerop (win:getenvironmentvariable cname buffer1 needed-size))
nil
(ct:c-string-to-lisp-string buffer1))
(ct:free buffer)
(ct:free buffer1)))
#+ecl (si:getenv x)
#+gcl (system:getenv x)
#+lispworks (lispworks:environment-variable x)
#+mcl (ccl:with-cstrs ((name x))
(let ((value (_getenv name)))
(unless (ccl:%null-ptr-p value)
(ccl:%get-cstring value))))
#+sbcl (sb-ext:posix-getenv x)
#+clasp (ext:getenv x)
#-(or abcl allegro clisp clozure cmu cormanlisp ecl gcl lispworks mcl sbcl scl xcl clasp)
(error "~S is not supported on your implementation" 'getenv))
(defun directory-from-environment (environment-variable-name)
(let ((string (getenv environment-variable-name)))
(when (plusp (length string))
(pathname-as-directory string))))
#+win32
(define-condition missing-temp-environment-variable (error)
()
(:report (lambda (condition stream)
(declare (ignore condition))
(format stream "the TEMP environment variable has not been found, cannot continue"))))
#+win32
(defun get-default-temporary-directory ()
(or (directory-from-environment "TEMP")
(error 'missing-temp-environment-variable)))
#-win32
(defun get-default-temporary-directory ()
(or (directory-from-environment "TMPDIR")
(and #-clisp (probe-file #P"/tmp/")
#+clisp (ext:probe-directory #P"/tmp/")
#P"/tmp/")))
(handler-case
(logical-pathname-translations "TEMPORARY-FILES")
(error ()
(alexandria:if-let (default-temporary-directory (get-default-temporary-directory))
(setf (logical-pathname-translations "TEMPORARY-FILES") `(("*.*.*" ,default-temporary-directory)))
(warn "could not automatically determine a default mapping for TEMPORARY-FILES")))))
;; locking for multi-threaded operation with unsafe random function
(defvar *create-file-name-lock* (bordeaux-threads:make-lock "Temporary File Name Creation Lock"))
(defmacro with-file-name-lock-held (() &body body)
`(bordeaux-threads:with-lock-held (*create-file-name-lock*)
,@body))
(defun generate-random-string ()
(with-file-name-lock-held ()
(format nil "~:@(~36,8,'0R~)" (random (expt 36 8) *name-random-state*))))
(define-condition invalid-temporary-pathname-template (error)
((string :initarg :string))
(:report (lambda (condition stream)
(with-slots (string) condition
(format stream "invalid temporary file name template ~S, must contain a percent sign that is to be replaced by a random string" string)))))
(defun generate-random-pathname (template random-string-generator)
(let ((percent-position (or (position #\% template)
(error 'invalid-temporary-pathname-template :string template))))
(merge-pathnames (concatenate 'string
(subseq template 0 percent-position)
(funcall random-string-generator)
(subseq template (1+ percent-position))))))
(define-condition cannot-create-temporary-file (error)
((template :initarg :template)
(max-tries :initarg :max-tries))
(:report (lambda (condition stream)
(with-slots (template max-tries) condition
(format stream "cannot create temporary file with template ~A, giving up after ~D attempt~:P"
template max-tries)))))
(defun open-temporary (&rest open-arguments
&key
(template *default-template*)
(generate-random-string 'generate-random-string)
(max-tries *max-tries*)
(direction :output)
&allow-other-keys)
"Create a file with a randomly generated name and return the opened
stream. The resulting pathname is generated from TEMPLATE, which
is a string representing a pathname template. A percent sign (%)
in that string is replaced by a randomly generated string to make
the filename unique. The default for TEMPLATE places temporary
files in the TEMPORARY-FILES logical pathname host, which is
automatically set up in a system specific manner. The file name
generated from TEMPLATE is merged with *DEFAULT-PATHNAME-DEFAULTS*,
so random pathnames relative to that directory can be generated by
not specifying a directory in TEMPLATE.
GENERATE-RANDOM-STRING can be passed to override the default
function that generates the random name component. It should
return a random string consisting of characters that are permitted
in a pathname (logical or physical, depending on TEMPLATE).
The name of the temporary file can be accessed calling the PATHNAME
function on STREAM. For convenience, the temporary file is opened
on the physical pathname, i.e. if the TEMPLATE designate a logical
pathname the translation to a physical pathname is performed before
opening the stream.
In order to create a unique file name, OPEN-TEMPORARY may loop
internally up to MAX-TRIES times before giving up and signalling a
CANNOT-CREATE-TEMPORARY-FILE condition."
(loop thereis (apply #'open
(translate-logical-pathname (generate-random-pathname template generate-random-string))
:direction direction
:if-exists nil
(alexandria:remove-from-plist open-arguments :template :generate-random-string :max-tries))
repeat max-tries
finally (error 'cannot-create-temporary-file
:template template
:max-tries max-tries)))
(defmacro with-output-to-temporary-file ((stream &rest args) &body body)
"Create a temporary file using OPEN-TEMPORARY with ARGS and run BODY
with STREAM bound to the temporary file stream. Returns the
pathname of the file that has been created. See OPEN-TEMPORARY for
permitted options."
`(with-open-stream (,stream (open-temporary ,@args))
,@body
(pathname ,stream)))
(defmacro with-open-temporary-file ((stream &rest args &key keep &allow-other-keys) &body body)
"Create a temporary file using OPEN-TEMPORARY with ARGS and run BODY
with STREAM bound to the temporary file stream. Returns the values
returned by BODY. By default, the file is deleted when BODY is
exited. If a true value is passed in KEEP, the file is not deleted
when the body is exited. See OPEN-TEMPORARY for more permitted
options."
`(with-open-stream (,stream (open-temporary ,@(alexandria:remove-from-plist args :keep)))
#+sbcl
(declare (sb-ext:muffle-conditions sb-ext:code-deletion-note))
,(if (and (constantp keep)
keep)
`(progn ,@body)
`(unwind-protect
(progn ,@body)
(unless ,keep
(close ,stream)
(delete-file (pathname ,stream)))))))

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(in-package :cl-fad-test)
(deftest 'temporary-file 'with-output-to-temporary-file ()
(let ((pathname (with-output-to-temporary-file (f)
(write-string "hello" f))))
(test-assert (probe-file pathname))
(test-equal (alexandria:read-file-into-string pathname) "hello")
(delete-file pathname)))
(deftest 'temporary-file 'with-open-temporary-file-keep ()
(let ((pathname (with-open-temporary-file (f :keep nil)
(pathname f))))
(test-assert (null (probe-file pathname))))
(let ((pathname (with-open-temporary-file (f :keep t)
(pathname f))))
(test-assert (probe-file pathname))
(delete-file pathname))
(let* ((keep nil)
(pathname (with-open-temporary-file (f :keep keep)
(pathname f))))
(test-assert (null (probe-file pathname))))
(let* ((keep t)
(pathname (with-open-temporary-file (f :keep keep)
(pathname f))))
(test-assert (probe-file pathname))
(delete-file pathname)))
(deftest 'temporary-file 'template-tests ()
;; error is signalled when template does not contain a percent sign.
(let ((*default-template* "foo"))
(test-condition (with-open-temporary-file (f :keep nil))
'invalid-temporary-pathname-template))
;; file name template occurs in generated file name (for logical path name)
(let* ((*default-template* "temporary-files:bla%.txt")
(pathname (with-open-temporary-file (f :keep nil)
(pathname f))))
(test-assert (cl-ppcre:scan "(?i)bla.*\\.txt$" (namestring pathname))))
;; file name template occurs in generated file name (for pysical path name)
(let* ((*default-template* (concatenate 'string
(namestring (translate-logical-pathname "temporary-files:"))
"bla%.txt"))
(pathname (with-open-temporary-file (f :keep nil)
(pathname f))))
(test-assert (cl-ppcre:scan "(?i)bla.*\\.txt$" (namestring pathname)))))