(let* ((pathname-directory (%pathname-directory pathname))
(defaults-directory (%pathname-directory defaults))
(prefix-len (length defaults-directory))
- (result-dir
+ (result-directory
(cond ((and (> prefix-len 1)
(>= (length pathname-directory) prefix-len)
(compare-component (subseq pathname-directory
(t
;; We are a relative directory. So we lose.
(lose)))))
- (strings (unparse-unix-directory-list result-dir)))
+ (strings (unparse-unix-directory-list result-directory)))
(let* ((pathname-version (%pathname-version pathname))
(version-needed (and pathname-version
(not (eq pathname-version :newest))))
\f
;;;; wildcard matching stuff
+;;; Return a list of all the Lispy filenames (not including e.g. the
+;;; Unix magic "." and "..") in the directory named by DIRECTORY-NAME.
+(defun directory-lispy-filenames (directory-name)
+ (with-alien ((adlf (* c-string)
+ (alien-funcall (extern-alien
+ "alloc_directory_lispy_filenames"
+ (function (* c-string) c-string))
+ directory-name)))
+ (if (null-alien adlf)
+ (error 'simple-file-error
+ :pathname directory-name
+ :format-control "~@<couldn't read directory ~S: ~2I~_~A~:>"
+ :format-arguments (list directory-name (strerror)))
+ (unwind-protect
+ (c-strings->string-list adlf)
+ (alien-funcall (extern-alien "free_directory_lispy_filenames"
+ (function void (* c-string)))
+ adlf)))))
+
(/show0 "filesys.lisp 498")
;;; FIXME: could maybe be EVAL-WHEN (COMPILE EVAL)
&key (verify-existence t)
(follow-links t))
&body body)
- (let ((body-name (gensym)))
+ (let ((body-name (gensym "ENUMERATE-MATCHES-BODY-FUN-")))
`(block nil
(flet ((,body-name (,var)
,@body))
+ (declare (dynamic-extent ,body-name))
(%enumerate-matches (pathname ,pathname)
,verify-existence
,follow-links
(/show0 "filesys.lisp 500")
+;;; Call FUNCTION on matches.
(defun %enumerate-matches (pathname verify-existence follow-links function)
(/show0 "entering %ENUMERATE-MATCHES")
(when (pathname-type pathname)
nil function)))
(%enumerate-files "" pathname verify-existence function))))
+;;; Call FUNCTION on directories.
(defun %enumerate-directories (head tail pathname verify-existence
follow-links nodes function)
(declare (simple-string head))
(when (and res (eql (logand mode sb!unix:s-ifmt)
sb!unix:s-ifdir))
(let ((nodes (cons (cons dev ino) nodes)))
- ,@body))))
- (do-directory-entries ((name directory) &body body)
- `(let ((dir (sb!unix:open-dir ,directory)))
- (when dir
- (unwind-protect
- (loop
- (let ((,name (sb!unix:read-dir dir)))
- (cond ((null ,name)
- (return))
- ((string= ,name "."))
- ((string= ,name ".."))
- (t
- ,@body))))
- (sb!unix:close-dir dir))))))
+ ,@body)))))
(if tail
(let ((piece (car tail)))
(etypecase piece
(%enumerate-directories head (rest tail) pathname
verify-existence follow-links
nodes function)
- (do-directory-entries (name head)
+ (dolist (name (ignore-errors (directory-lispy-filenames head)))
(let ((subdir (concatenate 'string head name)))
(multiple-value-bind (res dev ino mode)
(unix-xstat subdir)
verify-existence follow-links
nodes function))))))))
((or pattern (member :wild))
- (do-directory-entries (name head)
+ (dolist (name (directory-lispy-filenames head))
(when (or (eq piece :wild) (pattern-matches piece name))
(let ((subdir (concatenate 'string head name)))
(multiple-value-bind (res dev ino mode)
nodes function))))))
(%enumerate-files head pathname verify-existence function))))
+;;; Call FUNCTION on files.
(defun %enumerate-files (directory pathname verify-existence function)
(declare (simple-string directory))
(/show0 "entering %ENUMERATE-FILES")
(eq name :wild)
(eq type :wild))
(/show0 "WILD, more or less")
- (let ((dir (sb!unix:open-dir directory)))
- (when dir
- (unwind-protect
- (loop
- (/show0 "at head of LOOP")
- (let ((file (sb!unix:read-dir dir)))
- (if file
- (unless (or (string= file ".")
- (string= file ".."))
- (multiple-value-bind
- (file-name file-type file-version)
- (let ((*ignore-wildcards* t))
- (extract-name-type-and-version
- file 0 (length file)))
- (when (and (components-match file-name name)
- (components-match file-type type)
- (components-match file-version
- version))
- (funcall function
- (concatenate 'string
- directory
- file)))))
- (return))))
- (sb!unix:close-dir dir)))))
+ ;; I IGNORE-ERRORS here just because the original CMU CL
+ ;; code did. I think the intent is that it's not an error
+ ;; to request matches to a wild pattern when no matches
+ ;; exist, but I haven't tried to figure out whether
+ ;; everything is kosher. (E.g. what if we try to match a
+ ;; wildcard but we don't have permission to read one of the
+ ;; relevant directories?) -- WHN 2001-04-17
+ (dolist (complete-filename (ignore-errors
+ (directory-lispy-filenames directory)))
+ (multiple-value-bind
+ (file-name file-type file-version)
+ (let ((*ignore-wildcards* t))
+ (extract-name-type-and-version
+ complete-filename 0 (length complete-filename)))
+ (when (and (components-match file-name name)
+ (components-match file-type type)
+ (components-match file-version version))
+ (funcall function
+ (concatenate 'string
+ directory
+ complete-filename))))))
(t
(/show0 "default case")
(let ((file (concatenate 'string directory name)))
\f
;;;; UNIX-NAMESTRING
-(defun unix-namestring (pathname &optional (for-input t) executable-only)
- #!+sb-doc
- "Convert PATHNAME into a string that can be used with UNIX system calls.
- Search-lists and wild-cards are expanded."
- ;; toy@rtp.ericsson.se: Let unix-namestring also handle logical
- ;; pathnames too.
- ;; FIXME: What does this ^ mean? A bug? A remark on a change already made?
- (let ((path (let ((lpn (pathname pathname)))
- (if (typep lpn 'logical-pathname)
- (namestring (translate-logical-pathname lpn))
- pathname))))
- (enumerate-search-list
- (pathname path)
- (collect ((names))
- (enumerate-matches (name pathname nil :verify-existence for-input)
- (when (or (not executable-only)
- (and (eq (sb!unix:unix-file-kind name)
- :file)
- (sb!unix:unix-access name
- sb!unix:x_ok)))
- (names name)))
- (let ((names (names)))
- (when names
- (when (cdr names)
- (error 'simple-file-error
- :format-control "~S is ambiguous:~{~% ~A~}"
- :format-arguments (list pathname names)))
- (return (car names))))))))
+(defun empty-relative-pathname-spec-p (x)
+ (or (equal x "")
+ (and (pathnamep x)
+ (or (equal (pathname-directory x) '(:relative))
+ ;; KLUDGE: I'm not sure this second check should really
+ ;; have to be here. But on sbcl-0.6.12.7,
+ ;; (PATHNAME-DIRECTORY (PATHNAME "")) is NIL, and
+ ;; (PATHNAME "") seems to act like an empty relative
+ ;; pathname, so in order to work with that, I test
+ ;; for NIL here. -- WHN 2001-05-18
+ (null (pathname-directory x)))
+ (null (pathname-name x))
+ (null (pathname-type x)))
+ ;; (The ANSI definition of "pathname specifier" has
+ ;; other cases, but none of them seem to admit the possibility
+ ;; of being empty and relative.)
+ ))
+
+;;; Convert PATHNAME into a string that can be used with UNIX system
+;;; calls, or return NIL if no match is found. Search-lists and
+;;; wild-cards are expanded.
+(defun unix-namestring (pathname-spec &optional (for-input t))
+ ;; The ordinary rules of converting Lispy paths to Unix paths break
+ ;; down for the current working directory, which Lisp thinks of as
+ ;; "" (more or less, and modulo ANSI's *DEFAULT-PATHNAME-DEFAULTS*,
+ ;; which unfortunately SBCL, as of sbcl-0.6.12.8, basically ignores)
+ ;; and Unix thinks of as ".". Since we're at the interface between
+ ;; Unix system calls and things like ENSURE-DIRECTORIES-EXIST which
+ ;; think the Lisp way, we perform the conversion.
+ ;;
+ ;; (FIXME: The *right* way to deal with this special case is to
+ ;; merge PATHNAME-SPEC with *DEFAULT-PATHNAME-DEFAULTS* here, after
+ ;; which it's not a relative pathname any more so the special case
+ ;; is no longer an issue. But until *DEFAULT-PATHNAME-DEFAULTS*
+ ;; works, we use this hack.)
+ (if (empty-relative-pathname-spec-p pathname-spec)
+ "."
+ ;; Otherwise, the ordinary rules apply.
+ (let* ((possibly-logical-pathname (pathname pathname-spec))
+ (physical-pathname (if (typep possibly-logical-pathname
+ 'logical-pathname)
+ (namestring (translate-logical-pathname
+ possibly-logical-pathname))
+ possibly-logical-pathname))
+ (matches nil)) ; an accumulator for actual matches
+ (enumerate-matches (match physical-pathname nil
+ :verify-existence for-input)
+ (push match matches))
+ (case (length matches)
+ (0 nil)
+ (1 (first matches))
+ (t (error 'simple-file-error
+ :format-control "~S is ambiguous:~{~% ~A~}"
+ :format-arguments (list pathname-spec matches)))))))
\f
;;;; TRUENAME and PROBE-FILE
-;;; Another silly file function trivially different from another function.
+;;; This is only trivially different from PROBE-FILE, which is silly
+;;; but ANSI.
(defun truename (pathname)
#!+sb-doc
- "Return the pathname for the actual file described by the pathname
- An error of type file-error is signalled if no such file exists,
+ "Return the pathname for the actual file described by PATHNAME.
+ An error of type FILE-ERROR is signalled if no such file exists,
or the pathname is wild."
(if (wild-pathname-p pathname)
(error 'simple-file-error
- :format-control "bad place for a wild pathname"
+ :format-control "can't use a wild pathname here"
:pathname pathname)
(let ((result (probe-file pathname)))
(unless result
;;; If PATHNAME exists, return its truename, otherwise NIL.
(defun probe-file (pathname)
#!+sb-doc
- "Return a pathname which is the truename of the file if it exists, NIL
+ "Return a pathname which is the truename of the file if it exists, or NIL
otherwise. An error of type FILE-ERROR is signaled if pathname is wild."
- (if (wild-pathname-p pathname)
- (error 'simple-file-error
- :pathname pathname
- :format-control "bad place for a wild pathname")
- (let ((namestring (unix-namestring pathname t)))
- (when (and namestring (sb!unix:unix-file-kind namestring))
- (let ((truename (sb!unix:unix-resolve-links
- (sb!unix:unix-maybe-prepend-current-directory
- namestring))))
- (when truename
- (let ((*ignore-wildcards* t))
- (pathname (sb!unix:unix-simplify-pathname truename)))))))))
+ (when (wild-pathname-p pathname)
+ (error 'simple-file-error
+ :pathname pathname
+ :format-control "can't use a wild pathname here"))
+ (let ((namestring (unix-namestring pathname t)))
+ (when (and namestring (sb!unix:unix-file-kind namestring))
+ (let ((truename (sb!unix:unix-resolve-links
+ (sb!unix:unix-maybe-prepend-current-directory
+ namestring))))
+ (when truename
+ (let ((*ignore-wildcards* t))
+ (pathname (sb!unix:unix-simplify-pathname truename))))))))
\f
;;;; miscellaneous other operations
(defun rename-file (file new-name)
#!+sb-doc
- "Rename File to have the specified New-Name. If file is a stream open to a
+ "Rename FILE to have the specified NEW-NAME. If FILE is a stream open to a
file, then the associated file is renamed."
(let* ((original (truename file))
(original-namestring (unix-namestring original t))
(unless res
(error 'simple-file-error
:pathname new-name
- :format-control "failed to rename ~A to ~A: ~A"
- :format-arguments (list original new-name
- (sb!unix:get-unix-error-msg error))))
+ :format-control "~@<couldn't rename ~2I~_~A ~I~_to ~2I~_~A: ~
+ ~I~_~A~:>"
+ :format-arguments (list original new-name (strerror error))))
(when (streamp file)
(file-name file new-namestring))
(values new-name original (truename new-name)))))
(defun delete-file (file)
#!+sb-doc
- "Delete the specified file."
+ "Delete the specified FILE."
(let ((namestring (unix-namestring file t)))
(when (streamp file)
(close file :abort t))
:pathname file
:format-control "~S doesn't exist."
:format-arguments (list file)))
-
(multiple-value-bind (res err) (sb!unix:unix-unlink namestring)
(unless res
- (error 'simple-file-error
- :pathname namestring
- :format-control "could not delete ~A: ~A"
- :format-arguments (list namestring
- (sb!unix:get-unix-error-msg err))))))
+ (simple-file-perror "couldn't delete ~A" namestring err))))
t)
\f
-;;; Return Home:, which is set up for us at initialization time.
+;;; (This is an ANSI Common Lisp function.)
+;;;
+;;; This is obtained from the logical name \"home:\", which is set
+;;; up for us at initialization time.
(defun user-homedir-pathname (&optional host)
- #!+sb-doc
- "Returns the home directory of the logged in user as a pathname.
- This is obtained from the logical name \"home:\"."
+ "Return the home directory of the user as a pathname."
(declare (ignore host))
;; Note: CMU CL did #P"home:" here instead of using a call to
;; PATHNAME. Delaying construction of the pathname until we're
(t t)))
xn)))
\f
+;;;; DEFAULT-DIRECTORY stuff
+;;;;
+;;;; FIXME: *DEFAULT-DIRECTORY-DEFAULTS* seems to be the ANSI way to
+;;;; deal with this, so we should beef up *DEFAULT-DIRECTORY-DEFAULTS*
+;;;; and make all the old DEFAULT-DIRECTORY stuff go away. (At that
+;;;; time the need for UNIX-CHDIR will go away too, I think.)
+
(defun default-directory ()
#!+sb-doc
- "Returns the pathname for the default directory. This is the place where
+ "Return the pathname for the default directory. This is the place where
a file will be written if no directory is specified. This may be changed
- with setf."
+ with SETF."
(multiple-value-bind (gr dir-or-error) (sb!unix:unix-current-directory)
(if gr
(let ((*ignore-wildcards* t))
(multiple-value-bind (gr error) (sb!unix:unix-chdir namestring)
(if gr
(setf (search-list "default:") (default-directory))
- (error (sb!unix:get-unix-error-msg error))))
+ (simple-file-perror "couldn't set default directory to ~S"
+ new-val
+ error)))
new-val))
(/show0 "filesys.lisp 934")
\f
(defun ensure-directories-exist (pathspec &key verbose (mode #o777))
#!+sb-doc
- "Tests whether the directories containing the specified file
- actually exist, and attempts to create them if they do not.
- Portable programs should avoid using the :MODE argument."
+ "Test whether the directories containing the specified file
+ actually exist, and attempt to create them if they do not.
+ The MODE argument is a CMUCL/SBCL-specific extension to control
+ the Unix permission bits."
(let* ((pathname (pathname pathspec))
(pathname (if (typep pathname 'logical-pathname)
(translate-logical-pathname pathname)