Most functions renamed to start with ls-lisp.

(insert-directory): Renamed from dired-ls.

1 files changed, 99 insertions, 150 deletions

diff --git a/lisp/ls-lisp.el b/lisp/ls-lisp.el
index 506b706bf39..54be933b2e3 100644
--- a/lisp/ls-lisp.el
+++ b/lisp/ls-lisp.el
@@ -1,9 +1,4 @@
-;;;; dired-lisp.el - emulate Tree Dired's ls completely in Emacs Lisp
-
-;;;; READ THE WARNING BELOW BEFORE USING THIS PROGRAM!
-
-(defconst dired-lisp-version (substring "$Revision: 1.8 $" 11 -2)
-  "$Id: dired-lisp.el,v 1.8 1992/05/01 17:50:56 sk Exp sk $")
+;;;; directory.el - emulate insert-directory completely in Emacs Lisp
 
 ;; Copyright (C) 1992 by Sebastian Kremer <sk@thp.uni-koeln.de>
 
@@ -21,160 +16,114 @@
 ;; along with this program; if not, write to the Free Software
 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-;; LISPDIR ENTRY for the Elisp Archive ===============================
-;;    LCD Archive Entry:
-;;    dired-lisp|Sebastian Kremer|sk@thp.uni-koeln.de
-;;    |emulate Tree Dired's ls completely in Emacs Lisp 
-;;    |$Date: 1992/05/01 17:50:56 $|$Revision: 1.8 $|
-
 ;; INSTALLATION =======================================================
 ;; 
-;; Put this file into your load-path.  Loading it will result in
-;; redefining function dired-ls to not call ls.
-
-;; You need tree dired from ftp.cs.buffalo.edu:pub/Emacs/diredall.tar.Z,
-;; classic (e.g. 18.57) dired.el will not work.
+;; Put this file into your load-path.  To use it, load it
+;; with (load "directory").
 
 ;; OVERVIEW ===========================================================
 
-;; This file overloads tree dired so that all fileinfo is retrieved
-;; directly from Emacs lisp, without using an ls subprocess.
+;; This file overloads the function insert-directory to implement it
+;; directly from Emacs lisp, without running `ls' in a subprocess.
 
-;; Useful if you cannot afford to fork Emacs on a real memory UNIX,
+;; It is useful if you cannot afford to fork Emacs on a real memory UNIX,
 ;; under VMS, or if you don't have the ls program, or if you want
 ;; different format from what ls offers.
 
-;; Beware that if you change the output format of dired-ls, you'll
-;; have to change dired-move-to-filename and
-;; dired-move-to-end-of-filename as well.
-
-;; With this package is loaded, dired uses regexps instead of shell
-;; wildcards. If you enter regexps remember to double each $ sign.
-;; For example, to dired all elisp (*.el) files, enter `.*\.el$$',
+;; This function uses regexps instead of shell
+;; wildcards.  If you enter regexps remember to double each $ sign.
+;; For example, to include files *.el, enter `.*\.el$$',
 ;; resulting in the regexp `.*\.el$'.
 
-;; WARNING ===========================================================
-
-;; With earlier version of this program I sometimes got an internal
-;; Emacs error:
-
-;;   Signalling: (wrong-type-argument natnump #<EMACS BUG: ILLEGAL
-;;   DATATYPE (#o37777777727) Save your buffers immediately and please
-;;   report this bug>)
-
-;; The datatype differs (I also got #o67 once).
-
-;; Sometimes emacs just crashed with a fatal error.
-
-;; After I've avoided using directory-files and file-attributes
-;; together inside a mapcar, the bug didn't surface any longer.
-
 ;;  RESTRICTIONS =====================================================
 
-;; * many ls switches are ignored, see docstring of `dired-ls'.
-
-;; * In Emacs 18: cannot display date of file, displays a fake date
-;;   "Jan 00 00:00" instead (dates do work in Emacs 19)
+;; * many ls switches are ignored, see docstring of `insert-directory'.
 
 ;; * Only numeric uid/gid
 
-;; * if you load dired-lisp after ange-ftp, remote listings look
-;;   really strange: 
-;;
-;;   total 1
-;;   d?????????  -1 -1       -1             -1 Jan  1  1970 .
-;;   d?????????  -1 -1       -1             -1 Jan  1  1970 ..
-;;
-;;   This is because ange-ftp's file-attributes does not return much
-;;   useful information.
-;;
-;;   If you load dired-lisp first, there seem to be no problems.
-
 ;; TODO ==============================================================
 
 ;; Recognize some more ls switches: R F
 
-
-(require 'dired)                        ; we will redefine dired-ls:
-(or (fboundp 'dired-lisp-unix-ls)
-    (fset 'dired-lisp-unix-ls (symbol-function 'dired-ls)))
-
-(fset 'dired-ls 'dired-lisp-ls)
-
-(defun dired-lisp-ls (file &optional switches wildcard full-directory-p)
-  "dired-lisp.el's version of dired-ls.
-Known switches: A a S r i s t
-In Emacs 19, additional known switches are: c u
-Others are ignored.
-
-  Insert ls output of FILE, optionally formatted with SWITCHES.
-Optional third arg WILDCARD means treat non-directory part of FILE as
-emacs regexp (_not_ a shell wildcard).  If you enter regexps remember
-to double each $ sign.
-
+(defun insert-directory (file &optional switches wildcard full-directory-p)
+  "Insert directory listing for of FILE, formatted according to SWITCHES.
+Leaves point after the inserted text.
+Optional third arg WILDCARD means treat FILE as shell wildcard.
 Optional fourth arg FULL-DIRECTORY-P means file is a directory and
-switches do not contain `d'.
-
-SWITCHES default to dired-listing-switches."
-  (or switches (setq switches dired-listing-switches))
-  (or (consp switches)                  ; convert to list of chars
-      (setq switches (mapcar 'identity switches))) 
-  (if wildcard
-      (setq wildcard (file-name-nondirectory file) ; actually emacs regexp
-            ;; perhaps convert it from shell to emacs syntax?
-            file (file-name-directory file)))
-  (if (or wildcard
-          full-directory-p)
-      (let* ((dir (file-name-as-directory file))
-             (default-directory dir);; so that file-attributes works
-             (sum 0)
-             elt
-             short
-             (file-list (directory-files dir nil wildcard))
-             file-alist 
-             ;; do all bindings here for speed
-             fil attr)
-        (cond ((memq ?A switches)
-               (setq file-list
-                     (dired-lisp-delete-matching "^\\.\\.?$" file-list)))
-              ((not (memq ?a switches))
-               ;; if neither -A  nor -a, flush . files
-               (setq file-list
-                     (dired-lisp-delete-matching "^\\." file-list))))
-        (setq file-alist
-              (mapcar
-               (function
-                (lambda (x)
-                  ;; file-attributes("~bogus") bombs
-                  (cons x (file-attributes (expand-file-name x)))))
-               ;; inserting the call to directory-files right here
-               ;; seems to stimulate an Emacs bug
-               ;; ILLEGAL DATATYPE (#o37777777727) or #o67
-               file-list))
-        (insert "total \007\n")         ; filled in afterwards
-        (setq file-alist
-              (dired-lisp-handle-switches file-alist switches))
-        (while file-alist
-          (setq elt (car file-alist)
-                short (car elt)
-                attr  (cdr elt)
-                file-alist (cdr file-alist)
-                fil (concat dir short)
-                sum (+ sum (nth 7 attr)))
-          (insert (dired-lisp-format short attr switches)))
-        ;; Fill in total size of all files:
-        (save-excursion
-          (search-backward "total \007")
-          (goto-char (match-end 0))
-          (delete-char -1)
-          (insert (format "%d" (1+ (/ sum 1024))))))
-    ;; if not full-directory-p, FILE *must not* end in /, as
-    ;; file-attributes will not recognize a symlink to a directory
-    ;; must make it a relative filename as ls does:
-    (setq file (file-name-nondirectory file))
-    (insert (dired-lisp-format file (file-attributes file) switches))))
-
-(defun dired-lisp-delete-matching (regexp list)
+switches do not contain `d', so that a full listing is expected.
+
+This version of the function comes from `directory.el'.
+It does not support ordinary shell wildcards; instead, it allows
+regular expressions to match file names.
+
+The switches that work are: A a c i r S s t u"
+  (let (handler (handlers file-name-handler-alist))
+    (save-match-data
+     (while (and (consp handlers) (null handler))
+       (if (and (consp (car handlers))
+                (stringp (car (car handlers)))
+                (string-match (car (car handlers)) file))
+           (setq handler (cdr (car handlers))))
+       (setq handlers (cdr handlers))))
+    (if handler
+        (funcall handler 'insert-directory file switches
+                 wildcard full-directory-p)
+      (if wildcard
+          (setq wildcard (file-name-nondirectory file) ; actually emacs regexp
+                ;; perhaps convert it from shell to emacs syntax?
+                file (file-name-directory file)))
+      (if (or wildcard
+              full-directory-p)
+          (let* ((dir (file-name-as-directory file))
+                 (default-directory dir);; so that file-attributes works
+                 (sum 0)
+                 elt
+                 short
+                 (file-list (directory-files dir nil wildcard))
+                 file-alist 
+                 ;; do all bindings here for speed
+                 fil attr)
+            (cond ((memq ?A switches)
+                   (setq file-list
+                         (ls-lisp-delete-matching "^\\.\\.?$" file-list)))
+                  ((not (memq ?a switches))
+                   ;; if neither -A  nor -a, flush . files
+                   (setq file-list
+                         (ls-lisp-delete-matching "^\\." file-list))))
+            (setq file-alist
+                  (mapcar
+                   (function
+                    (lambda (x)
+                      ;; file-attributes("~bogus") bombs
+                      (cons x (file-attributes (expand-file-name x)))))
+                   ;; inserting the call to directory-files right here
+                   ;; seems to stimulate an Emacs bug
+                   ;; ILLEGAL DATATYPE (#o37777777727) or #o67
+                   file-list))
+            (insert "total \007\n")     ; filled in afterwards
+            (setq file-alist
+                  (ls-lisp-handle-switches file-alist switches))
+            (while file-alist
+              (setq elt (car file-alist)
+                    short (car elt)
+                    attr  (cdr elt)
+                    file-alist (cdr file-alist)
+                    fil (concat dir short)
+                    sum (+ sum (nth 7 attr)))
+              (insert (ls-lisp-format short attr switches)))
+            ;; Fill in total size of all files:
+            (save-excursion
+              (search-backward "total \007")
+              (goto-char (match-end 0))
+              (delete-char -1)
+              (insert (format "%d" (1+ (/ sum 1024))))))
+        ;; if not full-directory-p, FILE *must not* end in /, as
+        ;; file-attributes will not recognize a symlink to a directory
+        ;; must make it a relative filename as ls does:
+        (setq file (file-name-nondirectory file))
+        (insert (ls-lisp-format file (file-attributes file) switches))))))
+
+(defun ls-lisp-delete-matching (regexp list)
   ;; Delete all elements matching REGEXP from LIST, return new list.
   ;; Should perhaps use setcdr for efficiency.
   (let (result)
@@ -184,7 +133,7 @@ SWITCHES default to dired-listing-switches."
       (setq list (cdr list)))
     result))
 
-(defun dired-lisp-handle-switches (file-alist switches)
+(defun ls-lisp-handle-switches (file-alist switches)
   ;; FILE-ALIST's elements are (FILE . FILE-ATTRIBUTES).
   ;; Return new alist sorted according to SWITCHES which is a list of
   ;; characters.  Default sorting is alphabetically.
@@ -199,11 +148,11 @@ SWITCHES default to dired-listing-switches."
                           (< (nth 7 (cdr y))
                              (nth 7 (cdr x))))))
                       ((memq ?t switches) ; sorted on time
-                       (setq index (dired-lisp-time-index switches))
+                       (setq index (ls-lisp-time-index switches))
                        (function
                         (lambda (x y)
-                          (time-lessp (nth index (cdr y))
-                                      (nth index (cdr x))))))
+                          (ls-lisp-time-lessp (nth index (cdr y))
+                                              (nth index (cdr x))))))
                       (t                ; sorted alphabetically
                        (function
                         (lambda (x y)
@@ -214,7 +163,7 @@ SWITCHES default to dired-listing-switches."
   file-alist)
 
 ;; From Roland McGrath.  Can use this to sort on time.
-(defun time-lessp (time0 time1)
+(defun ls-lisp-time-lessp (time0 time1)
   (let ((hi0 (car time0))
         (hi1 (car time1))
         (lo0 (car (cdr time0)))
@@ -224,7 +173,7 @@ SWITCHES default to dired-listing-switches."
              (< lo0 lo1)))))
 
 
-(defun dired-lisp-format (file-name file-attr &optional switches)
+(defun ls-lisp-format (file-name file-attr &optional switches)
   (let ((file-type (nth 0 file-attr)))
     (concat (if (memq ?i switches)      ; inode number
                 (format "%6d " (nth 10 file-attr)))
@@ -242,7 +191,7 @@ SWITCHES default to dired-listing-switches."
                     (nth 3 file-attr)   ; gid
                     (nth 7 file-attr)   ; size in bytes
                     )
-            (dired-lisp-format-time file-attr switches)
+            (ls-lisp-format-time file-attr switches)
             " "
             file-name
             (if (stringp file-type)     ; is a symbolic link
@@ -251,7 +200,7 @@ SWITCHES default to dired-listing-switches."
             "\n"
             )))
 
-(defun dired-lisp-time-index (switches)
+(defun ls-lisp-time-index (switches)
   ;; Return index into file-attributes according to ls SWITCHES.
   (cond
    ((memq ?c switches) 6)               ; last mode change
@@ -259,7 +208,7 @@ SWITCHES default to dired-listing-switches."
    ;; default is last modtime
    (t 5)))
 
-(defun dired-lisp-format-time (file-attr switches)
+(defun ls-lisp-format-time (file-attr switches)
   ;; Format time string for file with attributes FILE-ATTR according
   ;; to SWITCHES (a list of ls option letters of which c and u are recognized).
   ;; file-attributes's time is in a braindead format
@@ -268,7 +217,7 @@ SWITCHES default to dired-listing-switches."
   ;; date "Jan 00 00:00 ".
   (condition-case error-data
       (let* ((time (current-time-string
-                    (nth (dired-lisp-time-index switches) file-attr)))
+                    (nth (ls-lisp-time-index switches) file-attr)))
              (date (substring time 4 11)) ; "Apr 30 "
              (clock (substring time 11 16)) ; "11:27"
              (year (substring time 19 24)) ; " 1992"
@@ -283,6 +232,6 @@ SWITCHES default to dired-listing-switches."
     (error
      "Jan 00 00:00")))
 
-(provide 'dired-lisp)
+(provide 'ls-lisp)
 
 ; eof