;;;; miscellaneous tests of pathname-related stuff

;;;; This file is naturally impure because we mess with
;;;; LOGICAL-PATHNAME-TRANSLATIONS.

;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; While most of SBCL is derived from the CMU CL system, the test
;;;; files (like this one) were written from scratch after the fork
;;;; from CMU CL.
;;;; 
;;;; This software is in the public domain and is provided with
;;;; absolutely no warranty. See the COPYING and CREDITS files for
;;;; more information.

(in-package "CL-USER")

(load "assertoid.lisp")

(setf (logical-pathname-translations "demo0")
      '(("**;*.*.*" "/tmp/")))

;;; In case of a parse error we want to get a condition of type
;;; CL:PARSE-ERROR (or more specifically, of type
;;; SB-KERNEL:NAMESTRING-PARSE-ERROR).
(assert
  (typep (grab-condition (translate-logical-pathname "demo0::bla;file.lisp"))
         'parse-error))

;;; some things SBCL-0.6.9 used not to parse correctly:
;;;
;;; SBCL used to throw an error saying there's no translation.
(assert (equal (namestring (translate-logical-pathname "demo0:file.lisp"))
               "/tmp/file.lisp"))
;;; We do not match a null directory to every wild path:
(assert (not (pathname-match-p "demo0:file.lisp"
                               (logical-pathname "demo0:tmp;**;*.*.*"))))
;;; Remove "**" from our resulting pathname when the source-dir is NIL:
(setf (logical-pathname-translations "demo1")
      '(("**;*.*.*" "/tmp/**/*.*") (";**;*.*.*" "/tmp/rel/**/*.*")))
(assert (not (equal (namestring (translate-logical-pathname "demo1:foo.lisp"))
                    "/tmp/**/foo.lisp")))
;;; That should be correct:
(assert (equal (namestring (translate-logical-pathname "demo1:foo.lisp"))
               "/tmp/foo.lisp"))
;;; Check for absolute/relative path confusion:
(assert (not (equal (namestring (translate-logical-pathname "demo1:;foo.lisp"))
                     "tmp/rel/foo.lisp")))
(assert (equal (namestring (translate-logical-pathname "demo1:;foo.lisp"))
               "/tmp/rel/foo.lisp"))
                     
;;; Under SBCL: new function #'UNPARSE-ENOUGH-NAMESTRING, to
;;; handle the following case exactly (otherwise we get an error:
;;; "#'IDENTITY CALLED WITH 2 ARGS."
(setf (logical-pathname-translations "demo2")
        '(("test;**;*.*" "/tmp/demo2/test")))
(enough-namestring "demo2:test;foo.lisp")

;;; When a pathname comes from a logical host, it should be in upper
;;; case. (This doesn't seem to be specifically required in the ANSI
;;; spec, but it's left up to the implementors, and the arguments made
;;; in the cleanup issue PATHNAME-LOGICAL:ADD seem to be a pretty
;;; compelling reason for the implementors to choose case
;;; insensitivity and a canonical case.)
(setf (logical-pathname-translations "FOO") 
      '(("**;*.*.*" "/full/path/to/foo/**/*.*.*")))
(let* ((pn1 (make-pathname :host "FOO" :directory "etc" :name "INETD" 
                           :type "conf"))
       (pn2 (make-pathname :host "foo" :directory "ETC" :name "inetd" 
                           :type "CONF"))
       (pn3 (read-from-string (prin1-to-string pn1))))
  (assert (equal pn1 pn2))
  (assert (equal pn1 pn3)))

;;; In addition to the upper-case constraint above, if the logical-pathname
;;; contains a string component in e.g. the directory, name and type slot,
;;; these should be valid "WORDS", according to CLHS 19.3.1.
;;; FIXME: currently SBCL throws NAMESTRING-PARSE-ERROR: should this be
;;; a TYPE-ERROR?

;; error: directory-component not valid
(assert (not (ignore-errors
               (make-pathname :host "FOO" :directory "!bla" :name "bar"))))

;; error: name-component not valid
(assert (not (ignore-errors
               (make-pathname :host "FOO" :directory "bla" :name "!bar"))))

;; error: type-component not valid.
(assert (not (ignore-errors
               (make-pathname :host "FOO" :directory "bla" :name "bar"
                              :type "&baz"))))

;;; We may need to parse the host as a LOGICAL-NAMESTRING HOST. The
;;; HOST in PARSE-NAMESTRING can be either a string or :UNSPECIFIC
;;; without actually requiring the system to signal an error (apart
;;; from host mismatches).
(assert (equal (namestring (parse-namestring "" "FOO")) "FOO:"))
(assert (equal (namestring (parse-namestring "" :unspecific)) ""))

;;; The third would work if the call were (and it should continue to
;;; work ...)
(parse-namestring ""
                  (pathname-host
                   (translate-logical-pathname
                    "FOO:")))

;;; ANSI says PARSE-NAMESTRING returns TYPE-ERROR on host mismatch.
(let ((cond (grab-condition (parse-namestring "foo:jeamland" "demo2"))))
  (assert (typep cond 'type-error)))

;;; turning one logical pathname into another:
(setf (logical-pathname-translations "foo")
       '(("tohome;*.*.*" "home:*.*.*")))
(assert (equal (namestring (translate-logical-pathname "foo:tohome;x.y"))
               "home:x.y"))    

;;; ANSI, in its wisdom, specifies that it's an error (specifically a
;;; TYPE-ERROR) to query the system about the translations of a string
;;; which doesn't have any translations. It's not clear why we don't
;;; just return NIL in that case, but they make the rules..
(let ((cond (grab-condition (logical-pathname-translations "unregistered-host"))))
  (assert (typep cond 'type-error)))

;;; FIXME: A comment on this section up to sbcl-0.6.11.30 or so said
;;;   examples from CLHS: Section 19.4, LOGICAL-PATHNAME-TRANSLATIONS
;;;   (sometimes converted to the Un*x way of things)
;;; but when I looked it up I didn't see the connection. Presumably
;;; there's some code in this section which should be attributed
;;; to something in the ANSI spec, but I don't know what code it is
;;; or what section of the specification has the related code.
(setf (logical-pathname-translations "test0")
        '(("**;*.*.*"              "/library/foo/**/")))
(assert (equal (namestring (translate-logical-pathname
                            "test0:foo;bar;baz;mum.quux"))
               "/library/foo/foo/bar/baz/mum.quux"))
(setf (logical-pathname-translations "prog")
        '(("RELEASED;*.*.*"        "MY-UNIX:/sys/bin/my-prog/")
          ("RELEASED;*;*.*.*"      "MY-UNIX:/sys/bin/my-prog/*/")
          ("EXPERIMENTAL;*.*.*"    "MY-UNIX:/usr/Joe/development/prog/")
          ("EXPERIMENTAL;*;*.*.*"  "MY-UNIX:/usr/Joe/development/prog/*/")))
(setf (logical-pathname-translations "prog")
        '(("CODE;*.*.*"             "/lib/prog/")))
(assert (equal (namestring (translate-logical-pathname
                            "prog:code;documentation.lisp"))
               "/lib/prog/documentation.lisp"))
(setf (logical-pathname-translations "prog")
        '(("CODE;DOCUMENTATION.*.*" "/lib/prog/docum.*")
          ("CODE;*.*.*"             "/lib/prog/")))
(assert (equal (namestring (translate-logical-pathname
                            "prog:code;documentation.lisp"))
               "/lib/prog/docum.lisp"))

;;; ANSI section 19.3.1.1.5 specifies that translation to a filesystem
;;; which doesn't have versions should ignore the version slot. CMU CL
;;; didn't ignore this as it should, but we do.
(assert (equal (namestring (translate-logical-pathname
                            "test0:foo;bar;baz;mum.quux.3"))
               "/library/foo/foo/bar/baz/mum.quux"))

;;;; MERGE-PATHNAME tests
;;;;
;;;; There are some things we don't bother testing, just because they're
;;;; not meaningful on the underlying filesystem anyway.
;;;;
;;;; Mostly that means that we don't do devices, we don't do versions
;;;; except minimally in LPNs (they get lost in the translation to
;;;; physical hosts, so it's not much of an issue), and we don't do
;;;; hosts except for LPN hosts
;;;;
;;;; Although these tests could conceivably be useful in principle for
;;;; other implementations, they depend quite heavily on the rules for
;;;; namestring parsing, which are implementation-specific. So, success
;;;; or failure in these tests doesn't tell you anything about
;;;; ANSI-compliance unless your PARSE-NAMESTRING works like ours.

(setf (logical-pathname-translations "scratch")
      '(("**;*.*.*" "/usr/local/doc/**/*")))

(loop for (expected-result . params) in
      `(;; trivial merge
        (#P"/usr/local/doc/foo" #p"foo" #p"/usr/local/doc/")
        ;; If pathname does not specify a host, device, directory,
        ;; name, or type, each such component is copied from
        ;; default-pathname.
        ;; 1) no name, no type
        (#p"/supplied-dir/name.type" #p"/supplied-dir/" #p"/dir/name.type")
        ;; 2) no directory, no type
        (#p"/dir/supplied-name.type" #p"supplied-name" #p"/dir/name.type")
        ;; 3) no name, no dir (must use make-pathname as ".foo" is parsed
        ;; as a name)
        (#p"/dir/name.supplied-type"
         ,(make-pathname :type "supplied-type")
	 #p"/dir/name.type")
        ;; If (pathname-directory pathname) is a list whose car is
        ;; :relative, and (pathname-directory default-pathname) is a
        ;; list, then the merged directory is [...]
        (#p"/aaa/bbb/ccc/ddd/qqq/www" #p"qqq/www" #p"/aaa/bbb/ccc/ddd/eee")
        ;; except that if the resulting list contains a string or
        ;; :wild immediately followed by :back, both of them are
        ;; removed.
        (#P"/aaa/bbb/ccc/blah/eee"
         ;; "../" in a namestring is parsed as :up not :back, so make-pathname
         ,(make-pathname :directory '(:relative :back "blah"))
	 #p"/aaa/bbb/ccc/ddd/eee")
        ;; If (pathname-directory default-pathname) is not a list or
        ;; (pathname-directory pathname) is not a list whose car is
        ;; :relative, the merged directory is (or (pathname-directory
        ;; pathname) (pathname-directory default-pathname))
        (#P"/absolute/path/name.type"
         #p"/absolute/path/name"
	 #p"/dir/default-name.type")
        ;; === logical pathnames ===
        ;; recognizes a logical pathname namestring when
        ;; default-pathname is a logical pathname
	;; FIXME: 0.6.12.23 fails this one.
        #+nil (#P"scratch:foo;name1" #p"name1" #p"scratch:foo;")
        ;; or when the namestring begins with the name of a defined
        ;; logical host followed by a colon [I assume that refers to pathname
        ;; rather than default-pathname]
        (#p"SCRATCH:FOO;NAME2" #p"scratch:;name2" #p"scratch:foo;")
        ;; conduct the previous set of tests again, with a lpn first argument
        (#P"SCRATCH:USR;LOCAL;DOC;FOO" #p"scratch:;foo" #p"/usr/local/doc/")
        (#p"SCRATCH:SUPPLIED-DIR;NAME.TYPE"
	 #p"scratch:supplied-dir;"
	 #p"/dir/name.type")
        (#p"SCRATCH:DIR;SUPPLIED-NAME.TYPE"
	 #p"scratch:;supplied-name"
	 #p"/dir/name.type")
        (#p"SCRATCH:DIR;NAME.SUPPLIED-TYPE"
         ,(make-pathname :host "scratch" :type "supplied-type")
	 #p"/dir/name.type")
        (#p"SCRATCH:AAA;BBB;CCC;DDD;FOO;BAR"
         ,(make-pathname :host "scratch"
			 :directory '(:relative "foo")
			 :name "bar")
         #p"/aaa/bbb/ccc/ddd/eee")
        (#p"SCRATCH:AAA;BBB;CCC;FOO;BAR"
         ,(make-pathname :host "scratch"
			 :directory '(:relative :back "foo")
			 :name "bar")
         #p"/aaa/bbb/ccc/ddd/eee")
        (#p"SCRATCH:ABSOLUTE;PATH;NAME.TYPE"
         #p"scratch:absolute;path;name" #p"/dir/default-name.type")

        ;; FIXME: test version handling in LPNs
        )
      do (assert (string= (namestring (apply #'merge-pathnames params))
                          (namestring expected-result))))

;;;; success
(quit :unix-status 104)