X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/380874900ca183ec2fdce91949d841328852d7a8..2b96868715a33d5c1bfbd03e961a222076398722:/lisp/ls-lisp.el diff --git a/lisp/ls-lisp.el b/lisp/ls-lisp.el index 3a18442ef1..08d07eb03a 100644 --- a/lisp/ls-lisp.el +++ b/lisp/ls-lisp.el @@ -1,7 +1,7 @@ ;;; ls-lisp.el --- emulate insert-directory completely in Emacs Lisp -;; Copyright (C) 1992, 1994, 2000, 2002, 2003, 2004, -;; 2005, 2006 Free Software Foundation, Inc. +;; Copyright (C) 1992, 1994, 2000, 2001, 2002, 2003, 2004, +;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. ;; Author: Sebastian Kremer ;; Modified by: Francis J. Wright @@ -10,10 +10,10 @@ ;; This file is part of GNU Emacs. -;; GNU Emacs is free software; you can redistribute it and/or modify +;; GNU Emacs is free software: you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation; either version 2, or (at your option) -;; any later version. +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -21,9 +21,7 @@ ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License -;; along with GNU Emacs; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -;; Boston, MA 02110-1301, USA. +;; along with GNU Emacs. If not, see . ;;; Commentary: @@ -75,7 +73,7 @@ (cond ((eq system-type 'macos) 'MacOS) ;; ((eq system-type 'windows-nt) 'MS-Windows) ((memq system-type - '(hpux dgux usg-unix-v unisoft-unix rtu irix berkeley-unix)) + '(hpux usg-unix-v unisoft-unix irix berkeley-unix)) 'UNIX)) ; very similar to GNU ;; Anything else defaults to nil, meaning GNU. "*Platform to emulate: GNU (default), MacOS, MS-Windows, UNIX. @@ -113,7 +111,7 @@ option will have no effect until you restart Emacs." (t '(links uid gid))) ; GNU ls "*A list of optional file attributes that ls-lisp should display. It should contain none or more of the symbols: links, uid, gid. -nil (or an empty list) means display none of them. +A value of nil (or an empty list) means display none of them. Concepts come from UNIX: `links' means count of names associated with the file\; `uid' means user (owner) identifier\; `gid' means group @@ -151,7 +149,10 @@ Otherwise they are treated as Emacs regexps (for backward compatibility)." '("%b %e %H:%M" "%b %e %Y") "*List of `format-time-string' specs to display file time stamps. -They are used whenever a locale is not specified to use instead. +These specs are used ONLY if a valid locale can not be determined. + +If `ls-lisp-use-localized-time-format' is non-nil, these specs are used +regardless of whether the locale can be determined. Syntax: (EARLY-TIME-FORMAT OLD-TIME-FORMAT) @@ -166,9 +167,31 @@ current year. The OLD-TIME-FORMAT is used for older files. To use ISO (string :tag "Old time format")) :group 'ls-lisp) +(defcustom ls-lisp-use-localized-time-format nil + "*Non-nil causes ls-lisp to use `ls-lisp-format-time-list' even if +a valid locale is specified. + +WARNING: Using localized date/time format might cause Dired columns +to fail to lign up, e.g. if month names are not all of the same length." + :type 'boolean + :group 'ls-lisp) + (defvar original-insert-directory nil "This holds the original function definition of `insert-directory'.") +(defvar ls-lisp-uid-d-fmt "-%d" + "Format to display integer UIDs.") +(defvar ls-lisp-uid-s-fmt "-%s" + "Format to display user names.") +(defvar ls-lisp-gid-d-fmt "-%d" + "Format to display integer GIDs.") +(defvar ls-lisp-gid-s-fmt "-%s" + "Format to display user group names.") +(defvar ls-lisp-filesize-d-fmt "%d" + "Format to display integer file sizes.") +(defvar ls-lisp-filesize-f-fmt "%.0f" + "Format to display float file sizes.") + ;; Remember the original insert-directory function (or (featurep 'ls-lisp) ; FJW: unless this file is being reloaded! (setq original-insert-directory (symbol-function 'insert-directory))) @@ -197,13 +220,14 @@ The Lisp emulation does not run any external programs or shells. It supports ordinary shell wildcards if `ls-lisp-support-shell-wildcards' is non-nil; otherwise, it interprets wildcards as regular expressions to match file names. It does not support all `ls' switches -- those -that work are: A a c i r S s t u U X g G B C R and F partly." +that work are: A a c i r S s t u U X g G B C R n and F partly." (if ls-lisp-use-insert-directory-program (funcall original-insert-directory file switches wildcard full-directory-p) ;; We need the directory in order to find the right handler. (let ((handler (find-file-name-handler (expand-file-name file) 'insert-directory)) + (orig-file file) wildcard-regexp) (if handler (funcall handler 'insert-directory file switches @@ -217,7 +241,10 @@ that work are: A a c i r S s t u U X g G B C R and F partly." ;; `ls' don't mind, we certainly do, because it makes us think ;; there is no wildcard, only a directory name. (if (and ls-lisp-support-shell-wildcards - (string-match "[[?*]" file)) + (string-match "[[?*]" file) + ;; Prefer an existing file to wildcards, like + ;; dired-noselect does. + (not (file-exists-p file))) (progn (or (not (eq (aref file (1- (length file))) ?/)) (setq file (substring file 0 (1- (length file))))) @@ -229,9 +256,21 @@ that work are: A a c i r S s t u U X g G B C R and F partly." (file-name-nondirectory file)) file (file-name-directory file)) (if (memq ?B switches) (setq wildcard-regexp "[^~]\\'"))) - (ls-lisp-insert-directory - file switches (ls-lisp-time-index switches) - wildcard-regexp full-directory-p) + (condition-case err + (ls-lisp-insert-directory + file switches (ls-lisp-time-index switches) + wildcard-regexp full-directory-p) + (invalid-regexp + ;; Maybe they wanted a literal file that just happens to + ;; use characters special to shell wildcards. + (if (equal (cadr err) "Unmatched [ or [^") + (progn + (setq wildcard-regexp (if (memq ?B switches) "[^~]\\'") + file (file-relative-name orig-file)) + (ls-lisp-insert-directory + file switches (ls-lisp-time-index switches) + nil full-directory-p)) + (signal (car err) (cdr err))))) ;; Try to insert the amount of free space. (save-excursion (goto-char (point-min)) @@ -258,11 +297,18 @@ not contain `d', so that a full listing is expected." (let* ((dir (file-name-as-directory file)) (default-directory dir) ; so that file-attributes works (file-alist - (directory-files-and-attributes dir nil wildcard-regexp t 'string)) + (directory-files-and-attributes dir nil wildcard-regexp t + (if (memq ?n switches) + 'integer + 'string))) (now (current-time)) (sum 0) + (max-uid-len 0) + (max-gid-len 0) + (max-file-size 0) ;; do all bindings here for speed - total-line files elt short file-size fil attr) + total-line files elt short file-size fil attr + fuid fgid uid-len gid-len) (cond ((memq ?A switches) (setq file-alist (ls-lisp-delete-matching "^\\.\\.?$" file-alist))) @@ -275,6 +321,40 @@ not contain `d', so that a full listing is expected." (if (memq ?C switches) ; column (-C) format (ls-lisp-column-format file-alist) (setq total-line (cons (point) (car-safe file-alist))) + ;; Find the appropriate format for displaying uid, gid, and + ;; file size, by finding the longest strings among all the + ;; files we are about to display. + (dolist (elt file-alist) + (setq attr (cdr elt) + fuid (nth 2 attr) + uid-len (if (stringp fuid) (string-width fuid) + (length (format "%d" fuid))) + fgid (nth 3 attr) + gid-len (if (stringp fgid) (string-width fgid) + (length (format "%d" fgid))) + file-size (nth 7 attr)) + (if (> uid-len max-uid-len) + (setq max-uid-len uid-len)) + (if (> gid-len max-gid-len) + (setq max-gid-len gid-len)) + (if (> file-size max-file-size) + (setq max-file-size file-size))) + (setq ls-lisp-uid-d-fmt (format " %%-%dd" max-uid-len)) + (setq ls-lisp-uid-s-fmt (format " %%-%ds" max-uid-len)) + (setq ls-lisp-gid-d-fmt (format " %%-%dd" max-gid-len)) + (setq ls-lisp-gid-s-fmt (format " %%-%ds" max-gid-len)) + (setq ls-lisp-filesize-d-fmt + (format " %%%dd" + (if (memq ?s switches) + (length (format "%.0f" + (fceiling (/ max-file-size 1024.0)))) + (length (format "%.0f" max-file-size))))) + (setq ls-lisp-filesize-f-fmt + (format " %%%d.0f" + (if (memq ?s switches) + (length (format "%.0f" + (fceiling (/ max-file-size 1024.0)))) + (length (format "%.0f" max-file-size))))) (setq files file-alist) (while files ; long (-l) format (setq elt (car files) @@ -498,13 +578,37 @@ SWITCHES, TIME-INDEX and NOW give the full switch list and time data." ;; for symbolic link, or nil. (drwxrwxrwx (nth 8 file-attr))) ; attribute string ("drwxrwxrwx") (concat (if (memq ?i switches) ; inode number - (format " %6d" (nth 10 file-attr))) + (let ((inode (nth 10 file-attr))) + (if (consp inode) + (if (consp (cdr inode)) + ;; 2^(24+16) = 1099511627776.0, but + ;; multiplying by it and then adding the + ;; other members of the cons cell in one go + ;; loses precision, since a double does not + ;; have enough significant digits to hold a + ;; full 64-bit value. So below we split + ;; 1099511627776 into high 13 and low 5 + ;; digits and compute in two parts. + (let ((p1 (* (car inode) 10995116.0)) + (p2 (+ (* (car inode) 27776.0) + (* (cadr inode) 65536.0) + (cddr inode)))) + (format " %13.0f%05.0f " + ;; Use floor to emulate integer + ;; division. + (+ p1 (floor p2 100000.0)) + (mod p2 100000.0))) + (format " %18.0f " + (+ (* (car inode) 65536.0) + (cdr inode)))) + (format " %18d " inode)))) ;; nil is treated like "" in concat (if (memq ?s switches) ; size in K - (format " %4.0f" (fceiling (/ file-size 1024.0)))) + (format ls-lisp-filesize-f-fmt + (fceiling (/ file-size 1024.0)))) drwxrwxrwx ; attribute string (if (memq 'links ls-lisp-verbosity) - (format " %3d" (nth 1 file-attr))) ; link count + (format "%3d" (nth 1 file-attr))) ; link count ;; Numeric uid/gid are more confusing than helpful; ;; Emacs should be able to make strings of them. ;; They tend to be bogus on non-UNIX platforms anyway so @@ -512,12 +616,18 @@ SWITCHES, TIME-INDEX and NOW give the full switch list and time data." (if (memq 'uid ls-lisp-verbosity) ;; uid can be a sting or an integer (let ((uid (nth 2 file-attr))) - (format (if (stringp uid) " %-8s" " %-8d") uid))) + (format (if (stringp uid) + ls-lisp-uid-s-fmt + ls-lisp-uid-d-fmt) + uid))) (if (not (memq ?G switches)) ; GNU ls -- shows group by default (if (or (memq ?g switches) ; UNIX ls -- no group by default (memq 'gid ls-lisp-verbosity)) (let ((gid (nth 3 file-attr))) - (format (if (stringp gid) " %-8s" " %-8d") gid)))) + (format (if (stringp gid) + ls-lisp-gid-s-fmt + ls-lisp-gid-d-fmt) + gid)))) (ls-lisp-format-file-size file-size (memq ?h switches)) " " (ls-lisp-format-time file-attr time-index now) @@ -567,21 +677,30 @@ All ls time options, namely c, t and u, are handled." (setq locale nil)) (format-time-string (if (and (<= past-cutoff diff) (<= diff 0)) - (if locale "%m-%d %H:%M" (nth 0 ls-lisp-format-time-list)) - (if locale "%Y-%m-%d " (nth 1 ls-lisp-format-time-list))) + (if (and locale (not ls-lisp-use-localized-time-format)) + "%m-%d %H:%M" + (nth 0 ls-lisp-format-time-list)) + (if (and locale (not ls-lisp-use-localized-time-format)) + "%Y-%m-%d " + (nth 1 ls-lisp-format-time-list))) time)) (error "Unk 0 0000")))) (defun ls-lisp-format-file-size (file-size human-readable) - (if (or (not human-readable) - (< file-size 1024)) - (format (if (floatp file-size) " %9.0f" " %9d") file-size) - (do ((file-size (/ file-size 1024.0) (/ file-size 1024.0)) - ;; kilo, mega, giga, tera, peta, exa - (post-fixes (list "k" "M" "G" "T" "P" "E") (cdr post-fixes))) - ((< file-size 1024) (format " %8.0f%s" file-size (car post-fixes)))))) + (if (not human-readable) + (format (if (floatp file-size) + ls-lisp-filesize-f-fmt + ls-lisp-filesize-d-fmt) + file-size) + (if (< file-size 1024) + (format " %4d" file-size) + (do ((file-size (/ file-size 1024.0) (/ file-size 1024.0)) + ;; kilo, mega, giga, tera, peta, exa + (post-fixes (list "k" "M" "G" "T" "P" "E") (cdr post-fixes))) + ((< file-size 1024) + (format " %3.0f%s" file-size (car post-fixes))))))) (provide 'ls-lisp) -;;; arch-tag: e55f399b-05ec-425c-a6d5-f5e349c35ab4 +;; arch-tag: e55f399b-05ec-425c-a6d5-f5e349c35ab4 ;;; ls-lisp.el ends here