;;; Unix namestrings have the following format:
;;;
;;; namestring := [ directory ] [ file [ type [ version ]]]
-;;; directory := [ "/" | search-list ] { file "/" }*
-;;; search-list := [^:/]*:
+;;; directory := [ "/" ] { file "/" }*
;;; file := [^/]*
;;; type := "." [^/.]*
;;; version := "." ([0-9]+ | "*")
;;;
-;;; FIXME: Search lists are no longer supported.
-;;;
;;; Note: this grammar is ambiguous. The string foo.bar.5 can be
;;; parsed as either just the file specified or as specifying the
;;; file, type, and version. Therefore, we use the following rules
(setf start (1+ slash))))
(values absolute (pieces)))))
-(defun maybe-extract-search-list (namestr start end)
+;;; the thing before a colon in a logical path
+(def!struct (logical-hostname (:make-load-form-fun
+ (lambda (x)
+ (values `(make-logical-hostname
+ ,(logical-hostname-name x))
+ nil)))
+ (:copier nil)
+ (:constructor make-logical-hostname (name)))
+ (name (required-argument) :type simple-string))
+
+(defun maybe-extract-logical-hostname (namestr start end)
(declare (type simple-base-string namestr)
(type index start end))
(let ((quoted nil))
(#\\
(setf quoted t))
(#\:
- (return (values (remove-backslashes namestr start index)
+ (return (values (make-logical-hostname
+ (remove-backslashes namestr start index))
(1+ index)))))))))
(defun parse-unix-namestring (namestr start end)
(declare (type simple-base-string namestr)
- (type index start end))
+ (type index start end))
(multiple-value-bind (absolute pieces) (split-at-slashes namestr start end)
- (let ((search-list (if absolute
- nil
- (let ((first (car pieces)))
- (multiple-value-bind (search-list new-start)
- (maybe-extract-search-list namestr
- (car first)
- (cdr first))
- (when search-list
- (setf absolute t)
- (setf (car first) new-start))
- search-list)))))
+ (let ((logical-hostname
+ (if absolute
+ nil
+ (let ((first (car pieces)))
+ (multiple-value-bind (logical-hostname new-start)
+ (maybe-extract-logical-hostname namestr
+ (car first)
+ (cdr first))
+ (when logical-hostname
+ (setf absolute t)
+ (setf (car first) new-start))
+ logical-hostname)))))
+ (declare (type (or null logical-hostname) logical-hostname))
(multiple-value-bind (name type version)
- (let* ((tail (car (last pieces)))
- (tail-start (car tail))
- (tail-end (cdr tail)))
- (unless (= tail-start tail-end)
- (setf pieces (butlast pieces))
- (extract-name-type-and-version namestr tail-start tail-end)))
- ;; PVE: make sure there are no illegal characters in
- ;; the name, illegal being (code-char 0) and #\/
- #!+high-security
- (when (and (stringp name)
- (find-if #'(lambda (x) (or (char= x (code-char 0))
- (char= x #\/)))
- name))
- (error 'parse-error))
-
- ;; Now we have everything we want. So return it.
- (values nil ; no host for unix namestrings.
- nil ; no devices for unix namestrings.
- (collect ((dirs))
- (when search-list
- (dirs (intern-search-list search-list)))
- (dolist (piece pieces)
- (let ((piece-start (car piece))
- (piece-end (cdr piece)))
- (unless (= piece-start piece-end)
- (cond ((string= namestr ".." :start1 piece-start
- :end1 piece-end)
- (dirs :up))
- ((string= namestr "**" :start1 piece-start
- :end1 piece-end)
- (dirs :wild-inferiors))
- (t
- (dirs (maybe-make-pattern namestr
- piece-start
- piece-end)))))))
- (cond (absolute
- (cons :absolute (dirs)))
- ((dirs)
- (cons :relative (dirs)))
- (t
- nil)))
- name
- type
- version)))))
+ (let* ((tail (car (last pieces)))
+ (tail-start (car tail))
+ (tail-end (cdr tail)))
+ (unless (= tail-start tail-end)
+ (setf pieces (butlast pieces))
+ (extract-name-type-and-version namestr tail-start tail-end)))
+
+ (when (stringp name)
+ (let ((position (position-if (lambda (char)
+ (or (char= char (code-char 0))
+ (char= char #\/)))
+ name)))
+ (when position
+ (error 'namestring-parse-error
+ :complaint "can't embed #\\Nul or #\\/ in Unix namestring"
+ :namestring namestr
+ :offset position))))
+
+ ;; Now we have everything we want. So return it.
+ (values nil ; no host for Unix namestrings
+ nil ; no device for Unix namestrings
+ (collect ((dirs))
+ (when logical-hostname
+ (dirs logical-hostname))
+ (dolist (piece pieces)
+ (let ((piece-start (car piece))
+ (piece-end (cdr piece)))
+ (unless (= piece-start piece-end)
+ (cond ((string= namestr ".."
+ :start1 piece-start
+ :end1 piece-end)
+ (dirs :up))
+ ((string= namestr "**"
+ :start1 piece-start
+ :end1 piece-end)
+ (dirs :wild-inferiors))
+ (t
+ (dirs (maybe-make-pattern namestr
+ piece-start
+ piece-end)))))))
+ (cond (absolute
+ (cons :absolute (dirs)))
+ ((dirs)
+ (cons :relative (dirs)))
+ (t
+ nil)))
+ name
+ type
+ version)))))
(/show0 "filesys.lisp 300")
(when directory
(ecase (pop directory)
(:absolute
- (cond ((search-list-p (car directory))
- (pieces (search-list-name (pop directory)))
+ (cond ((logical-hostname-p (car directory))
+ ;; FIXME: The old CMU CL "search list" extension is
+ ;; gone, but the old machinery is still being used
+ ;; clumsily here and elsewhere, to represent anything
+ ;; which belongs before a colon prefix in the ANSI
+ ;; pathname machinery. This should be cleaned up,
+ ;; using simpler machinery with more mnemonic names.
+ (pieces (logical-hostname-name (pop directory)))
(pieces ":"))
(t
(pieces "/"))))
(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))))
(t
(lose)))))
(apply #'concatenate 'simple-string (strings)))))
-
-(/show0 "filesys.lisp 471")
-
-(def!struct (unix-host
- (:make-load-form-fun make-unix-host-load-form)
- (:include host
- (parse #'parse-unix-namestring)
- (unparse #'unparse-unix-namestring)
- (unparse-host #'unparse-unix-host)
- (unparse-directory #'unparse-unix-directory)
- (unparse-file #'unparse-unix-file)
- (unparse-enough #'unparse-unix-enough)
- (customary-case :lower))))
-
-(/show0 "filesys.lisp 486")
-
-(defvar *unix-host* (make-unix-host))
-
-(/show0 "filesys.lisp 488")
-
-(defun make-unix-host-load-form (host)
- (declare (ignore host))
- '*unix-host*)
\f
;;;; wildcard matching stuff
-(/show0 "filesys.lisp 498")
+;;; 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)))))
-;;; FIXME: could maybe be EVAL-WHEN (COMPILE EVAL)
+(/show0 "filesys.lisp 498")
-(defmacro enumerate-matches ((var pathname &optional result
- &key (verify-existence t)
- (follow-links t))
- &body body)
- (let ((body-name (gensym)))
- `(block nil
- (flet ((,body-name (,var)
- ,@body))
- (%enumerate-matches (pathname ,pathname)
- ,verify-existence
- ,follow-links
- #',body-name)
- ,result))))
+(defmacro !enumerate-matches ((var pathname &optional result
+ &key (verify-existence t)
+ (follow-links t))
+ &body body)
+ `(block nil
+ (%enumerate-matches (pathname ,pathname)
+ ,verify-existence
+ ,follow-links
+ (lambda (,var) ,@body))
+ ,result))
(/show0 "filesys.lisp 500")
+;;; Call FUNCTION on matches.
(defun %enumerate-matches (pathname verify-existence follow-links function)
- (/show0 "entering %ENUMERATE-MATCHES")
+ (/noshow0 "entering %ENUMERATE-MATCHES")
(when (pathname-type pathname)
(unless (pathname-name pathname)
(error "cannot supply a type without a name:~% ~S" pathname)))
(member (pathname-type pathname) '(nil :unspecific)))
(error "cannot supply a version without a type:~% ~S" pathname))
(let ((directory (pathname-directory pathname)))
- (/show0 "computed DIRECTORY")
+ (/noshow0 "computed DIRECTORY")
(if directory
(ecase (car directory)
(:absolute
- (/show0 "absolute directory")
+ (/noshow0 "absolute directory")
(%enumerate-directories "/" (cdr directory) pathname
verify-existence follow-links
nil function))
(:relative
- (/show0 "relative directory")
+ (/noshow0 "relative directory")
(%enumerate-directories "" (cdr directory) pathname
verify-existence follow-links
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")
+ (/noshow0 "entering %ENUMERATE-FILES")
(let ((name (%pathname-name pathname))
(type (%pathname-type pathname))
(version (%pathname-version pathname)))
- (/show0 "computed NAME, TYPE, and VERSION")
+ (/noshow0 "computed NAME, TYPE, and VERSION")
(cond ((member name '(nil :unspecific))
- (/show0 "UNSPECIFIC, more or less")
+ (/noshow0 "UNSPECIFIC, more or less")
(when (or (not verify-existence)
(sb!unix:unix-file-kind directory))
(funcall function directory)))
(pattern-p type)
(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)))))
+ (/noshow0 "WILD, more or less")
+ ;; 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")
+ (/noshow0 "default case")
(let ((file (concatenate 'string directory name)))
- (/show0 "computed basic FILE=..")
+ (/noshow0 "computed basic FILE=..")
(/primitive-print file)
(unless (or (null type) (eq type :unspecific))
- (/show0 "tweaking FILE for more-or-less-:UNSPECIFIC case")
+ (/noshow0 "tweaking FILE for more-or-less-:UNSPECIFIC case")
(setf file (concatenate 'string file "." type)))
(unless (member version '(nil :newest :wild))
- (/show0 "tweaking FILE for more-or-less-:WILD case")
+ (/noshow0 "tweaking FILE for more-or-less-:WILD case")
(setf file (concatenate 'string file "."
(quick-integer-to-string version))))
- (/show0 "finished possibly tweaking FILE=..")
+ (/noshow0 "finished possibly tweaking FILE=..")
(/primitive-print file)
(when (or (not verify-existence)
(sb!unix:unix-file-kind file t))
- (/show0 "calling FUNCTION on FILE")
+ (/noshow0 "calling FUNCTION on FILE")
(funcall function file)))))))
-(/show0 "filesys.lisp 603")
+(/noshow0 "filesys.lisp 603")
;;; FIXME: Why do we need this?
(defun quick-integer-to-string (n)
\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. 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* ((namestring (physicalize-pathname (pathname pathname-spec)))
+ (matches nil)) ; an accumulator for actual matches
+ (!enumerate-matches (match namestring 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,
- or the pathname is wild."
+ "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.
+
+ Under Unix, the TRUENAME of a broken symlink is considered to be
+ the name of the broken symlink itself."
(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* ((defaulted-pathname (merge-pathnames
+ pathname
+ (sane-default-pathname-defaults)))
+ (namestring (unix-namestring defaulted-pathname t)))
+ (when (and namestring (sb!unix:unix-file-kind namestring t))
+ (let ((trueishname (sb!unix:unix-resolve-links namestring)))
+ (when trueishname
+ (let ((*ignore-wildcards* t))
+ (pathname (sb!unix:unix-simplify-pathname trueishname))))))))
\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
(defun file-author (file)
#!+sb-doc
- "Returns the file author as a string, or nil if the author cannot be
- determined. Signals an error of type file-error if file doesn't exist,
- or file is a wild pathname."
+ "Return the file author as a string, or nil if the author cannot be
+ determined. Signal an error of type FILE-ERROR if FILE doesn't exist,
+ or FILE is a wild pathname."
(if (wild-pathname-p file)
(error 'simple-file-error
:pathname file
(/show0 "filesys.lisp 800")
-(defun directory (pathname &key (all t) (check-for-subdirs t)
- (follow-links t))
+(defun directory (pathname &key)
#!+sb-doc
- "Returns a list of pathnames, one for each file that matches the given
- pathname. Supplying :ALL as NIL causes this to ignore Unix dot files. This
- never includes Unix dot and dot-dot in the result. If :FOLLOW-LINKS is NIL,
- then symbolic links in the result are not expanded. This is not the
- default because TRUENAME does follow links, and the result pathnames are
- defined to be the TRUENAME of the pathname (the truename of a link may well
- be in another directory.)"
- (let ((results nil))
- (enumerate-search-list
- (pathname (merge-pathnames pathname
- (make-pathname :name :wild
- :type :wild
- :version :wild)))
- (enumerate-matches (name pathname)
- (when (or all
- (let ((slash (position #\/ name :from-end t)))
- (or (null slash)
- (= (1+ slash) (length name))
- (char/= (schar name (1+ slash)) #\.))))
- (push name results))))
- (let ((*ignore-wildcards* t))
- (mapcar (lambda (name)
- (let ((name (if (and check-for-subdirs
- (eq (sb!unix:unix-file-kind name)
- :directory))
- (concatenate 'string name "/")
- name)))
- (if follow-links (truename name) (pathname name))))
- (sort (delete-duplicates results :test #'string=) #'string<)))))
+ "Return a list of PATHNAMEs, each the TRUENAME of a file that matched the
+ given pathname. Note that the interaction between this ANSI-specified
+ TRUENAMEing and the semantics of the Unix filesystem (symbolic links..)
+ means this function can sometimes return files which don't have the same
+ directory as PATHNAME."
+ (let (;; We create one entry in this hash table for each truename,
+ ;; as an asymptotically fast way of removing duplicates (which
+ ;; can arise when e.g. multiple symlinks map to the same
+ ;; truename).
+ (truenames (make-hash-table :test #'equal))
+ (merged-pathname (merge-pathnames pathname
+ (make-pathname :name :wild
+ :type :wild
+ :version :wild))))
+ (!enumerate-matches (match merged-pathname)
+ (let ((*ignore-wildcards* t)
+ (truename (truename (if (eq (sb!unix:unix-file-kind match)
+ :directory)
+ (concatenate 'string match "/")
+ match))))
+ (setf (gethash (namestring truename) truenames)
+ truename)))
+ (mapcar #'cdr
+ ;; Sorting isn't required by the ANSI spec, but sorting
+ ;; into some canonical order seems good just on the
+ ;; grounds that the implementation should have repeatable
+ ;; behavior when possible.
+ (sort (loop for name being each hash-key in truenames
+ using (hash-value truename)
+ collect (cons name truename))
+ #'string<
+ :key #'car))))
\f
;;;; translating Unix uid's
;;;;
;;; Then if necessary, we look in "/etc/passwds" ("/etc/groups") which
;;; is really long and has to be fetched over the net.
;;;
+;;; The result is a SIMPLE-STRING or NIL.
+;;;
;;; FIXME: Now that we no longer have lookup-group-name, we no longer need
;;; the GROUP-OR-USER argument.
(defun get-group-or-user-name (group-or-user id)
- #!+sb-doc
- "Returns the simple-string user or group name of the user whose uid or gid
- is id, or NIL if no such user or group exists. Group-or-user is either
- :group or :user."
+ (declare (type (member :group :user) group-or-user))
+ (declare (type index id))
(let ((id-string (let ((*print-base* 10)) (prin1-to-string id))))
(declare (simple-string id-string))
(multiple-value-bind (file1 file2)
(t t)))
xn)))
\f
-(defun default-directory ()
- #!+sb-doc
- "Returns 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."
- (multiple-value-bind (gr dir-or-error) (sb!unix:unix-current-directory)
- (if gr
- (let ((*ignore-wildcards* t))
- (pathname (concatenate 'simple-string dir-or-error "/")))
- (error dir-or-error))))
-
-(defun %set-default-directory (new-val)
- (let ((namestring (unix-namestring new-val t)))
- (unless namestring
- (error "~S doesn't exist." new-val))
- (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))))
- new-val))
-
-(/show0 "filesys.lisp 934")
-
-(/show0 "entering what used to be !FILESYS-COLD-INIT")
-(defvar *default-pathname-defaults*
- (%make-pathname *unix-host* nil nil nil nil :newest))
-(setf (search-list "default:") (default-directory))
-(/show0 "leaving what used to be !FILESYS-COLD-INIT")
-\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."
- (let* ((pathname (pathname pathspec))
- (pathname (if (typep pathname 'logical-pathname)
- (translate-logical-pathname pathname)
- pathname))
- (created-p nil))
+ "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 (physicalize-pathname (pathname pathspec)))
+ (created-p nil))
(when (wild-pathname-p pathname)
(error 'simple-file-error
:format-control "bad place for a wild pathname"
:pathname pathspec))
- (enumerate-search-list (pathname pathname)
- (let ((dir (pathname-directory pathname)))
- (loop for i from 1 upto (length dir)
- do (let ((newpath (make-pathname
- :host (pathname-host pathname)
- :device (pathname-device pathname)
- :directory (subseq dir 0 i))))
- (unless (probe-file newpath)
- (let ((namestring (namestring newpath)))
- (when verbose
- (format *standard-output*
- "~&creating directory: ~A~%"
- namestring))
- (sb!unix:unix-mkdir namestring mode)
- (unless (probe-file namestring)
- (error 'simple-file-error
- :pathname pathspec
- :format-control "can't create directory ~A"
- :format-arguments (list namestring)))
- (setf created-p t)))))
- ;; Only the first path in a search-list is considered.
- (return (values pathname created-p))))))
+ (let ((dir (pathname-directory pathname)))
+ (loop for i from 1 upto (length dir)
+ do (let ((newpath (make-pathname
+ :host (pathname-host pathname)
+ :device (pathname-device pathname)
+ :directory (subseq dir 0 i))))
+ (unless (probe-file newpath)
+ (let ((namestring (namestring newpath)))
+ (when verbose
+ (format *standard-output*
+ "~&creating directory: ~A~%"
+ namestring))
+ (sb!unix:unix-mkdir namestring mode)
+ (unless (probe-file namestring)
+ (error 'simple-file-error
+ :pathname pathspec
+ :format-control "can't create directory ~A"
+ :format-arguments (list namestring)))
+ (setf created-p t)))))
+ (values pathname created-p))))
(/show0 "filesys.lisp 1000")
projects / sbcl.git / blobdiff