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902 lines
29 KiB
EmacsLisp
902 lines
29 KiB
EmacsLisp
;;; em-ls.el --- implementation of ls in Lisp
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;; Copyright (C) 1999, 2000 Free Software Foundation
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;; Author: John Wiegley <johnw@gnu.org>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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(provide 'em-ls)
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(eval-when-compile (require 'esh-maint))
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(defgroup eshell-ls nil
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"This module implements the \"ls\" utility fully in Lisp. If it is
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passed any unrecognized command switches, it will revert to the
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operating system's version. This version of \"ls\" uses text
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properties to colorize its output based on the setting of
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`eshell-ls-use-colors'."
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:tag "Implementation of `ls' in Lisp"
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:group 'eshell-module)
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;;; Commentary:
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;; Most of the command switches recognized by GNU's ls utility are
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;; supported ([(fileutils)ls invocation]).
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(require 'esh-util)
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(require 'esh-opt)
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;;; User Variables:
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(defvar eshell-ls-orig-insert-directory
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(symbol-function 'insert-directory)
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"Preserve the original definition of `insert-directory'.")
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(defcustom eshell-ls-unload-hook
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(list
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(function
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(lambda ()
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(fset 'insert-directory eshell-ls-orig-insert-directory))))
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"*When unloading `eshell-ls', restore the definition of `insert-directory'."
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:type 'hook
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:group 'eshell-ls)
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(defcustom eshell-ls-initial-args nil
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"*If non-nil, this list of args is included before any call to `ls'.
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This is useful for enabling human-readable format (-h), for example."
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:type '(repeat :tag "Arguments" string)
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:group 'eshell-ls)
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(defcustom eshell-ls-dired-initial-args nil
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"*If non-nil, args is included before any call to `ls' in dired.
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This is useful for enabling human-readable format (-h), for example."
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:type '(repeat :tag "Arguments" string)
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:group 'eshell-ls)
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(defcustom eshell-ls-use-in-dired nil
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"*If non-nil, use `eshell-ls' to read directories in dired."
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:set (lambda (symbol value)
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(if value
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(unless (and (boundp 'eshell-ls-use-in-dired)
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eshell-ls-use-in-dired)
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(fset 'insert-directory 'eshell-ls-insert-directory))
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(when (and (boundp 'eshell-ls-insert-directory)
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eshell-ls-use-in-dired)
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(fset 'insert-directory eshell-ls-orig-insert-directory)))
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(setq eshell-ls-use-in-dired value))
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:type 'boolean
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:require 'em-ls
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:group 'eshell-ls)
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(defcustom eshell-ls-default-blocksize 1024
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"*The default blocksize to use when display file sizes with -s."
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:type 'integer
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:group 'eshell-ls)
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(defcustom eshell-ls-exclude-regexp nil
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"*Unless -a is specified, files matching this regexp will not be shown."
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:type '(choice regexp (const nil))
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:group 'eshell-ls)
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(defcustom eshell-ls-exclude-hidden t
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"*Unless -a is specified, files beginning with . will not be shown.
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Using this boolean, instead of `eshell-ls-exclude-regexp', is both
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faster and conserves more memory."
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:type 'boolean
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:group 'eshell-ls)
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(defcustom eshell-ls-use-colors t
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"*If non-nil, use colors in file listings."
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:type 'boolean
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:group 'eshell-ls)
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(defface eshell-ls-directory-face
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'((((class color) (background light)) (:foreground "Blue" :weight bold))
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(((class color) (background dark)) (:foreground "SkyBlue" :weight bold))
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(t (:weight bold)))
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"*The face used for highlight directories."
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:group 'eshell-ls)
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(defface eshell-ls-symlink-face
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'((((class color) (background light)) (:foreground "Dark Cyan" :weight bold))
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(((class color) (background dark)) (:foreground "Cyan" :weight bold)))
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"*The face used for highlight symbolic links."
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:group 'eshell-ls)
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(defface eshell-ls-executable-face
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'((((class color) (background light)) (:foreground "ForestGreen" :weight bold))
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(((class color) (background dark)) (:foreground "Green" :weight bold)))
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"*The face used for highlighting executables (not directories, though)."
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:group 'eshell-ls)
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(defface eshell-ls-readonly-face
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'((((class color) (background light)) (:foreground "Brown"))
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(((class color) (background dark)) (:foreground "Pink")))
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"*The face used for highlighting read-only files."
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:group 'eshell-ls)
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(defface eshell-ls-unreadable-face
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'((((class color) (background light)) (:foreground "Grey30"))
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(((class color) (background dark)) (:foreground "DarkGrey")))
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"*The face used for highlighting unreadable files."
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:group 'eshell-ls)
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(defface eshell-ls-special-face
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'((((class color) (background light)) (:foreground "Magenta" :weight bold))
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(((class color) (background dark)) (:foreground "Magenta" :weight bold)))
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"*The face used for highlighting non-regular files."
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:group 'eshell-ls)
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(defface eshell-ls-missing-face
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'((((class color) (background light)) (:foreground "Red" :weight bold))
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(((class color) (background dark)) (:foreground "Red" :weight bold)))
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"*The face used for highlighting non-existant file names."
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:group 'eshell-ls)
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(defcustom eshell-ls-archive-regexp
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(concat "\\.\\(t\\(a[rz]\\|gz\\)\\|arj\\|lzh\\|"
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"zip\\|[zZ]\\|gz\\|bz2\\|deb\\|rpm\\)\\'")
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"*A regular expression that matches names of file archives.
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This typically includes both traditional archives and compressed
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files."
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:type 'regexp
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:group 'eshell-ls)
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(defface eshell-ls-archive-face
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'((((class color) (background light)) (:foreground "Orchid" :weight bold))
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(((class color) (background dark)) (:foreground "Orchid" :weight bold)))
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"*The face used for highlighting archived and compressed file names."
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:group 'eshell-ls)
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(defcustom eshell-ls-backup-regexp
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"\\(\\`\\.?#\\|\\(\\.bak\\|~\\)\\'\\)"
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"*A regular expression that matches names of backup files."
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:type 'regexp
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:group 'eshell-ls)
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(defface eshell-ls-backup-face
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'((((class color) (background light)) (:foreground "OrangeRed"))
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(((class color) (background dark)) (:foreground "LightSalmon")))
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"*The face used for highlighting backup file names."
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:group 'eshell-ls)
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(defcustom eshell-ls-product-regexp
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"\\.\\(elc\\|o\\(bj\\)?\\|a\\||lib\\|res\\)\\'"
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"*A regular expression that matches names of product files.
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Products are files that get generated from a source file, and hence
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ought to be recreatable if they are deleted."
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:type 'regexp
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:group 'eshell-ls)
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(defface eshell-ls-product-face
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'((((class color) (background light)) (:foreground "OrangeRed"))
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(((class color) (background dark)) (:foreground "LightSalmon")))
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"*The face used for highlighting files that are build products."
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:group 'eshell-ls)
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(defcustom eshell-ls-clutter-regexp
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"\\(^texput\\.log\\|^core\\)\\'"
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"*A regular expression that matches names of junk files.
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These are mainly files that get created for various reasons, but don't
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really need to stick around for very long."
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:type 'regexp
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:group 'eshell-ls)
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(defface eshell-ls-clutter-face
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'((((class color) (background light)) (:foreground "OrangeRed" :weight bold))
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(((class color) (background dark)) (:foreground "OrangeRed" :weight bold)))
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"*The face used for highlighting junk file names."
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:group 'eshell-ls)
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(defsubst eshell-ls-filetype-p (attrs type)
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"Test whether ATTRS specifies a directory."
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(if (nth 8 attrs)
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(eq (aref (nth 8 attrs) 0) type)))
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(defmacro eshell-ls-applicable (attrs index func file)
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"Test whether, for ATTRS, the user UID can do what corresponds to INDEX.
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This is really just for efficiency, to avoid having to stat the file
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yet again."
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`(if (numberp (nth 2 ,attrs))
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(if (= (user-uid) (nth 2 ,attrs))
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(not (eq (aref (nth 8 ,attrs) ,index) ?-))
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(,(eval func) ,file))
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(not (eq (aref (nth 8 ,attrs)
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(+ ,index (if (member (nth 2 ,attrs)
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(eshell-current-ange-uids))
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0 6)))
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?-))))
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(defcustom eshell-ls-highlight-alist nil
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"*This alist correlates test functions to color.
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The format of the members of this alist is
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(TEST-SEXP . FACE)
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If TEST-SEXP evals to non-nil, that face will be used to highlight the
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name of the file. The first match wins. `file' and `attrs' are in
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scope during the evaluation of TEST-SEXP."
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:type '(repeat (cons function face))
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:group 'eshell-ls)
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;;; Functions:
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(defun eshell-ls-insert-directory
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(file switches &optional wildcard full-directory-p)
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"Insert directory listing for FILE, formatted according to SWITCHES.
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Leaves point after the inserted text.
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SWITCHES may be a string of options, or a list of strings.
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Optional third arg WILDCARD means treat FILE as shell wildcard.
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Optional fourth arg FULL-DIRECTORY-P means file is a directory and
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switches do not contain `d', so that a full listing is expected.
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This version of the function uses `eshell/ls'. If any of the switches
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passed are not recognized, the operating system's version will be used
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instead."
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(let ((handler (find-file-name-handler file 'insert-directory)))
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(if handler
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(funcall handler 'insert-directory file switches
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wildcard full-directory-p)
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(if (stringp switches)
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(setq switches (split-string switches)))
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(let (eshell-current-handles
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eshell-current-subjob-p)
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;; use the fancy highlighting in `eshell-ls' rather than font-lock
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(when (and eshell-ls-use-colors
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(featurep 'font-lock))
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(font-lock-mode -1)
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(setq font-lock-defaults nil)
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(if (boundp 'font-lock-buffers)
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(set 'font-lock-buffers
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(delq (current-buffer)
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(symbol-value 'font-lock-buffers)))))
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(let ((insert-func 'insert)
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(error-func 'insert)
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(flush-func 'ignore)
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eshell-ls-dired-initial-args)
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(eshell-do-ls (append switches (list file))))))))
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(defsubst eshell/ls (&rest args)
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"An alias version of `eshell-do-ls'."
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(let ((insert-func 'eshell-buffered-print)
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(error-func 'eshell-error)
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(flush-func 'eshell-flush))
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(eshell-do-ls args)))
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(put 'eshell/ls 'eshell-no-numeric-conversions t)
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(eval-when-compile
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(defvar block-size)
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(defvar dereference-links)
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(defvar dir-literal)
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(defvar error-func)
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(defvar flush-func)
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(defvar human-readable)
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(defvar ignore-pattern)
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(defvar insert-func)
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(defvar listing-style)
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(defvar numeric-uid-gid)
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(defvar reverse-list)
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(defvar show-all)
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(defvar show-recursive)
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(defvar show-size)
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(defvar sort-method)
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(defvar ange-cache))
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(defun eshell-do-ls (&rest args)
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"Implementation of \"ls\" in Lisp, passing ARGS."
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(funcall flush-func -1)
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;; process the command arguments, and begin listing files
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(eshell-eval-using-options
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"ls" (if eshell-ls-initial-args
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(list eshell-ls-initial-args args)
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args)
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`((?a "all" nil show-all
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"show all files in directory")
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(?c nil by-ctime sort-method
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"sort by modification time")
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(?d "directory" nil dir-literal
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"list directory entries instead of contents")
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(?k "kilobytes" 1024 block-size
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"using 1024 as the block size")
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(?h "human-readable" 1024 human-readable
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"print sizes in human readable format")
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(?H "si" 1000 human-readable
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"likewise, but use powers of 1000 not 1024")
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(?I "ignore" t ignore-pattern
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"do not list implied entries matching pattern")
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(?l nil long-listing listing-style
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"use a long listing format")
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(?n "numeric-uid-gid" nil numeric-uid-gid
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"list numeric UIDs and GIDs instead of names")
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(?r "reverse" nil reverse-list
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"reverse order while sorting")
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(?s "size" nil show-size
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"print size of each file, in blocks")
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(?t nil by-mtime sort-method
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"sort by modification time")
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(?u nil by-atime sort-method
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"sort by last access time")
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(?x nil by-lines listing-style
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"list entries by lines instead of by columns")
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(?C nil by-columns listing-style
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"list entries by columns")
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(?L "deference" nil dereference-links
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"list entries pointed to by symbolic links")
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(?R "recursive" nil show-recursive
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"list subdirectories recursively")
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(?S nil by-size sort-method
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"sort by file size")
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(?U nil unsorted sort-method
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"do not sort; list entries in directory order")
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(?X nil by-extension sort-method
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"sort alphabetically by entry extension")
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(?1 nil single-column listing-style
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"list one file per line")
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(nil "help" nil nil
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"show this usage display")
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:external "ls"
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:usage "[OPTION]... [FILE]...
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List information about the FILEs (the current directory by default).
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Sort entries alphabetically across.")
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;; setup some defaults, based on what the user selected
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(unless block-size
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(setq block-size eshell-ls-default-blocksize))
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(unless listing-style
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(setq listing-style 'by-columns))
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(unless args
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(setq args (list ".")))
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(let ((eshell-ls-exclude-regexp eshell-ls-exclude-regexp) ange-cache)
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(when ignore-pattern
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(unless (eshell-using-module 'eshell-glob)
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(error (concat "-I option requires that `eshell-glob'"
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" be a member of `eshell-modules-list'")))
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(set-text-properties 0 (length ignore-pattern) nil ignore-pattern)
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(setq eshell-ls-exclude-regexp
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(if eshell-ls-exclude-regexp
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(concat "\\(" eshell-ls-exclude-regexp "\\|"
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(eshell-glob-regexp ignore-pattern) "\\)")
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(eshell-glob-regexp ignore-pattern))))
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;; list the files!
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(eshell-ls-entries
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(mapcar (function
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(lambda (arg)
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(cons (if (and (eshell-under-windows-p)
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(file-name-absolute-p arg))
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(expand-file-name arg)
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arg)
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(eshell-file-attributes arg))))
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args)
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t (expand-file-name default-directory)))
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(funcall flush-func)))
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(defsubst eshell-ls-printable-size (filesize &optional by-blocksize)
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"Return a printable FILESIZE."
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(eshell-printable-size filesize human-readable
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(and by-blocksize block-size)
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eshell-ls-use-colors))
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(defsubst eshell-ls-size-string (attrs size-width)
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"Return the size string for ATTRS length, using SIZE-WIDTH."
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(let* ((str (eshell-ls-printable-size (nth 7 attrs) t))
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(len (length str)))
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(if (< len size-width)
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(concat (make-string (- size-width len) ? ) str)
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str)))
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(defun eshell-ls-annotate (fileinfo)
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"Given a FILEINFO object, return a resolved, decorated FILEINFO.
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This means resolving any symbolic links, determining what face the
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name should be displayed as, etc. Think of it as cooking a FILEINFO."
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(if (not (and (stringp (cadr fileinfo))
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(or dereference-links
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(eq listing-style 'long-listing))))
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(setcar fileinfo (eshell-ls-decorated-name fileinfo))
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(let (dir attr)
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(unless (file-name-absolute-p (cadr fileinfo))
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(setq dir (file-truename
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(file-name-directory
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(expand-file-name (car fileinfo))))))
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(setq attr
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(eshell-file-attributes
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(let ((target (if dir
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(expand-file-name (cadr fileinfo) dir)
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(cadr fileinfo))))
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(if dereference-links
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(file-truename target)
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target))))
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(if (or dereference-links
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(string-match "^\\.\\.?$" (car fileinfo)))
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(progn
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(setcdr fileinfo attr)
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(setcar fileinfo (eshell-ls-decorated-name fileinfo)))
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(assert (eq listing-style 'long-listing))
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(setcar fileinfo
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(concat (eshell-ls-decorated-name fileinfo) " -> "
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(eshell-ls-decorated-name
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(cons (cadr fileinfo) attr)))))))
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fileinfo)
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(defun eshell-ls-file (fileinfo &optional size-width copy-fileinfo)
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"Output FILE in long format.
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FILE may be a string, or a cons cell whose car is the filename and
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whose cdr is the list of file attributes."
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(if (not (cdr fileinfo))
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(funcall error-func (format "%s: No such file or directory\n"
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(car fileinfo)))
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(setq fileinfo
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(eshell-ls-annotate (if copy-fileinfo
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(cons (car fileinfo)
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(cdr fileinfo))
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fileinfo)))
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(let ((file (car fileinfo))
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(attrs (cdr fileinfo)))
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(if (not (eq listing-style 'long-listing))
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(if show-size
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(funcall insert-func (eshell-ls-size-string attrs size-width)
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" " file "\n")
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(funcall insert-func file "\n"))
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(let ((line
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(concat
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(if show-size
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(concat (eshell-ls-size-string attrs size-width) " "))
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(format
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"%s%4d %-8s %-8s "
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(or (nth 8 attrs) "??????????")
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(or (nth 1 attrs) 0)
|
|
(or (let ((user (nth 2 attrs)))
|
|
(and (not numeric-uid-gid)
|
|
user
|
|
(eshell-substring
|
|
(if (numberp user)
|
|
(user-login-name user)
|
|
user) 8)))
|
|
(nth 2 attrs)
|
|
"")
|
|
(or (let ((group (nth 3 attrs)))
|
|
(and (not numeric-uid-gid)
|
|
group
|
|
(eshell-substring
|
|
(if (numberp group)
|
|
(eshell-group-name group)
|
|
group) 8)))
|
|
(nth 3 attrs)
|
|
""))
|
|
(let* ((str (eshell-ls-printable-size (nth 7 attrs)))
|
|
(len (length str)))
|
|
(if (< len 8)
|
|
(concat (make-string (- 8 len) ? ) str)
|
|
str))
|
|
" " (format-time-string
|
|
(concat
|
|
"%b %e "
|
|
(if (= (nth 5 (decode-time (current-time)))
|
|
(nth 5 (decode-time
|
|
(nth (cond
|
|
((eq sort-method 'by-atime) 4)
|
|
((eq sort-method 'by-ctime) 6)
|
|
(t 5)) attrs))))
|
|
"%H:%M"
|
|
" %Y")) (nth (cond
|
|
((eq sort-method 'by-atime) 4)
|
|
((eq sort-method 'by-ctime) 6)
|
|
(t 5)) attrs)) " ")))
|
|
(funcall insert-func line file "\n"))))))
|
|
|
|
(defun eshell-ls-dir (dirinfo &optional insert-name root-dir size-width)
|
|
"Output the entries in DIRINFO.
|
|
If INSERT-NAME is non-nil, the name of DIRINFO will be output. If
|
|
ROOT-DIR is also non-nil, and a directory name, DIRINFO will be output
|
|
relative to that directory."
|
|
(let ((dir (car dirinfo)))
|
|
(if (not (cdr dirinfo))
|
|
(funcall error-func (format "%s: No such file or directory\n" dir))
|
|
(if dir-literal
|
|
(eshell-ls-file dirinfo size-width)
|
|
(if insert-name
|
|
(funcall insert-func
|
|
(eshell-ls-decorated-name
|
|
(cons (concat
|
|
(if root-dir
|
|
(file-relative-name dir root-dir)
|
|
(expand-file-name dir)))
|
|
(cdr dirinfo))) ":\n"))
|
|
(let ((entries (eshell-directory-files-and-attributes
|
|
dir nil (and (not show-all)
|
|
eshell-ls-exclude-hidden
|
|
"\\`[^.]") t)))
|
|
(when (and (not show-all) eshell-ls-exclude-regexp)
|
|
(while (and entries (string-match eshell-ls-exclude-regexp
|
|
(caar entries)))
|
|
(setq entries (cdr entries)))
|
|
(let ((e entries))
|
|
(while (cdr e)
|
|
(if (string-match eshell-ls-exclude-regexp (car (cadr e)))
|
|
(setcdr e (cddr e))
|
|
(setq e (cdr e))))))
|
|
(when (or (eq listing-style 'long-listing) show-size)
|
|
(let ((total 0.0))
|
|
(setq size-width 0)
|
|
(eshell-for e entries
|
|
(if (nth 7 (cdr e))
|
|
(setq total (+ total (nth 7 (cdr e)))
|
|
size-width
|
|
(max size-width
|
|
(length (eshell-ls-printable-size
|
|
(nth 7 (cdr e)) t))))))
|
|
(funcall insert-func "total "
|
|
(eshell-ls-printable-size total t) "\n")))
|
|
(let ((default-directory (expand-file-name dir)))
|
|
(if show-recursive
|
|
(eshell-ls-entries
|
|
(let ((e entries) (good-entries (list t)))
|
|
(while e
|
|
(unless (let ((len (length (caar e))))
|
|
(and (eq (aref (caar e) 0) ?.)
|
|
(or (= len 1)
|
|
(and (= len 2)
|
|
(eq (aref (caar e) 1) ?.)))))
|
|
(nconc good-entries (list (car e))))
|
|
(setq e (cdr e)))
|
|
(cdr good-entries))
|
|
nil root-dir)
|
|
(eshell-ls-files (eshell-ls-sort-entries entries)
|
|
size-width))))))))
|
|
|
|
(defsubst eshell-ls-compare-entries (l r inx func)
|
|
"Compare the time of two files, L and R, the attribute indexed by INX."
|
|
(let ((lt (nth inx (cdr l)))
|
|
(rt (nth inx (cdr r))))
|
|
(if (equal lt rt)
|
|
(string-lessp (directory-file-name (car l))
|
|
(directory-file-name (car r)))
|
|
(funcall func rt lt))))
|
|
|
|
(defun eshell-ls-sort-entries (entries)
|
|
"Sort the given ENTRIES, which may be files, directories or both.
|
|
In Eshell's implementation of ls, ENTRIES is always reversed."
|
|
(if (eq sort-method 'unsorted)
|
|
(nreverse entries)
|
|
(sort entries
|
|
(function
|
|
(lambda (l r)
|
|
(let ((result
|
|
(cond
|
|
((eq sort-method 'by-atime)
|
|
(eshell-ls-compare-entries l r 4 'eshell-time-less-p))
|
|
((eq sort-method 'by-mtime)
|
|
(eshell-ls-compare-entries l r 5 'eshell-time-less-p))
|
|
((eq sort-method 'by-ctime)
|
|
(eshell-ls-compare-entries l r 6 'eshell-time-less-p))
|
|
((eq sort-method 'by-size)
|
|
(eshell-ls-compare-entries l r 7 '<))
|
|
((eq sort-method 'by-extension)
|
|
(let ((lx (file-name-extension
|
|
(directory-file-name (car l))))
|
|
(rx (file-name-extension
|
|
(directory-file-name (car r)))))
|
|
(cond
|
|
((or (and (not lx) (not rx))
|
|
(equal lx rx))
|
|
(string-lessp (directory-file-name (car l))
|
|
(directory-file-name (car r))))
|
|
((not lx) t)
|
|
((not rx) nil)
|
|
(t
|
|
(string-lessp lx rx)))))
|
|
(t
|
|
(string-lessp (directory-file-name (car l))
|
|
(directory-file-name (car r)))))))
|
|
(if reverse-list
|
|
(not result)
|
|
result)))))))
|
|
|
|
(defun eshell-ls-files (files &optional size-width copy-fileinfo)
|
|
"Output a list of FILES.
|
|
Each member of FILES is either a string or a cons cell of the form
|
|
\(FILE . ATTRS)."
|
|
(if (memq listing-style '(long-listing single-column))
|
|
(eshell-for file files
|
|
(if file
|
|
(eshell-ls-file file size-width copy-fileinfo)))
|
|
(let ((f files)
|
|
last-f
|
|
display-files
|
|
ignore)
|
|
(while f
|
|
(if (cdar f)
|
|
(setq last-f f
|
|
f (cdr f))
|
|
(unless ignore
|
|
(funcall error-func
|
|
(format "%s: No such file or directory\n" (caar f))))
|
|
(if (eq f files)
|
|
(setq files (cdr files)
|
|
f files)
|
|
(if (not (cdr f))
|
|
(progn
|
|
(setcdr last-f nil)
|
|
(setq f nil))
|
|
(setcar f (cadr f))
|
|
(setcdr f (cddr f))))))
|
|
(if (not show-size)
|
|
(setq display-files (mapcar 'eshell-ls-annotate files))
|
|
(eshell-for file files
|
|
(let* ((str (eshell-ls-printable-size (nth 7 (cdr file)) t))
|
|
(len (length str)))
|
|
(if (< len size-width)
|
|
(setq str (concat (make-string (- size-width len) ? ) str)))
|
|
(setq file (eshell-ls-annotate file)
|
|
display-files (cons (cons (concat str " " (car file))
|
|
(cdr file))
|
|
display-files))))
|
|
(setq display-files (nreverse display-files)))
|
|
(let* ((col-vals
|
|
(if (eq listing-style 'by-columns)
|
|
(eshell-ls-find-column-lengths display-files)
|
|
(assert (eq listing-style 'by-lines))
|
|
(eshell-ls-find-column-widths display-files)))
|
|
(col-widths (car col-vals))
|
|
(display-files (cdr col-vals))
|
|
(columns (length col-widths))
|
|
(col-index 1)
|
|
need-return)
|
|
(eshell-for file display-files
|
|
(let ((name
|
|
(if (car file)
|
|
(if show-size
|
|
(concat (substring (car file) 0 size-width)
|
|
(eshell-ls-decorated-name
|
|
(cons (substring (car file) size-width)
|
|
(cdr file))))
|
|
(eshell-ls-decorated-name file))
|
|
"")))
|
|
(if (< col-index columns)
|
|
(setq need-return
|
|
(concat need-return name
|
|
(make-string
|
|
(max 0 (- (aref col-widths
|
|
(1- col-index))
|
|
(length name))) ? ))
|
|
col-index (1+ col-index))
|
|
(funcall insert-func need-return name "\n")
|
|
(setq col-index 1 need-return nil))))
|
|
(if need-return
|
|
(funcall insert-func need-return "\n"))))))
|
|
|
|
(defun eshell-ls-entries (entries &optional separate root-dir)
|
|
"Output PATH's directory ENTRIES, formatted according to OPTIONS.
|
|
Each member of ENTRIES may either be a string or a cons cell, the car
|
|
of which is the file name, and the cdr of which is the list of
|
|
attributes.
|
|
If SEPARATE is non-nil, directories name will be entirely separated
|
|
from the filenames. This is the normal behavior, except when doing a
|
|
recursive listing.
|
|
ROOT-DIR, if non-nil, specifies the root directory of the listing, to
|
|
which non-absolute directory names will be made relative if ever they
|
|
need to be printed."
|
|
(let (dirs files show-names need-return (size-width 0))
|
|
(eshell-for entry entries
|
|
(if (and (not dir-literal)
|
|
(or (eshell-ls-filetype-p (cdr entry) ?d)
|
|
(and (eshell-ls-filetype-p (cdr entry) ?l)
|
|
(file-directory-p (car entry)))))
|
|
(progn
|
|
(unless separate
|
|
(setq files (cons entry files)
|
|
size-width
|
|
(if show-size
|
|
(max size-width
|
|
(length (eshell-ls-printable-size
|
|
(nth 7 (cdr entry)) t))))))
|
|
(setq dirs (cons entry dirs)))
|
|
(setq files (cons entry files)
|
|
size-width
|
|
(if show-size
|
|
(max size-width
|
|
(length (eshell-ls-printable-size
|
|
(nth 7 (cdr entry)) t)))))))
|
|
(when files
|
|
(eshell-ls-files (eshell-ls-sort-entries files)
|
|
size-width show-recursive)
|
|
(setq need-return t))
|
|
(setq show-names (or show-recursive
|
|
(> (+ (length files) (length dirs)) 1)))
|
|
(eshell-for dir (eshell-ls-sort-entries dirs)
|
|
(if (and need-return (not dir-literal))
|
|
(funcall insert-func "\n"))
|
|
(eshell-ls-dir dir show-names
|
|
(unless (file-name-absolute-p (car dir)) root-dir)
|
|
size-width)
|
|
(setq need-return t))))
|
|
|
|
(defun eshell-ls-find-column-widths (files)
|
|
"Find the best fitting column widths for FILES.
|
|
It will be returned as a vector, whose length is the number of columns
|
|
to use, and each member of which is the width of that column
|
|
\(including spacing)."
|
|
(let* ((numcols 0)
|
|
(width 0)
|
|
(widths
|
|
(mapcar
|
|
(function
|
|
(lambda (file)
|
|
(+ 2 (length (car file)))))
|
|
files))
|
|
;; must account for the added space...
|
|
(max-width (+ (window-width) 2))
|
|
(best-width 0)
|
|
col-widths)
|
|
|
|
;; determine the largest number of columns in the first row
|
|
(let ((w widths))
|
|
(while (and w (< width max-width))
|
|
(setq width (+ width (car w))
|
|
numcols (1+ numcols)
|
|
w (cdr w))))
|
|
|
|
;; refine it based on the following rows
|
|
(while (> numcols 0)
|
|
(let ((i 0)
|
|
(colw (make-vector numcols 0))
|
|
(w widths))
|
|
(while w
|
|
(if (= i numcols)
|
|
(setq i 0))
|
|
(aset colw i (max (aref colw i) (car w)))
|
|
(setq w (cdr w) i (1+ i)))
|
|
(setq i 0 width 0)
|
|
(while (< i numcols)
|
|
(setq width (+ width (aref colw i))
|
|
i (1+ i)))
|
|
(if (and (< width max-width)
|
|
(> width best-width))
|
|
(setq col-widths colw
|
|
best-width width)))
|
|
(setq numcols (1- numcols)))
|
|
|
|
(cons (or col-widths (vector max-width)) files)))
|
|
|
|
(defun eshell-ls-find-column-lengths (files)
|
|
"Find the best fitting column lengths for FILES.
|
|
It will be returned as a vector, whose length is the number of columns
|
|
to use, and each member of which is the width of that column
|
|
\(including spacing)."
|
|
(let* ((numcols 1)
|
|
(width 0)
|
|
(widths
|
|
(mapcar
|
|
(function
|
|
(lambda (file)
|
|
(+ 2 (length (car file)))))
|
|
files))
|
|
(max-width (+ (window-width) 2))
|
|
col-widths
|
|
colw)
|
|
|
|
;; refine it based on the following rows
|
|
(while numcols
|
|
(let* ((rows (ceiling (/ (length widths)
|
|
(float numcols))))
|
|
(w widths)
|
|
(len (* rows numcols))
|
|
(index 0)
|
|
(i 0))
|
|
(setq width 0)
|
|
(unless (or (= rows 0)
|
|
(<= (/ (length widths) (float rows))
|
|
(float (1- numcols))))
|
|
(setq colw (make-vector numcols 0))
|
|
(while (> len 0)
|
|
(if (= i numcols)
|
|
(setq i 0 index (1+ index)))
|
|
(aset colw i
|
|
(max (aref colw i)
|
|
(or (nth (+ (* i rows) index) w) 0)))
|
|
(setq len (1- len) i (1+ i)))
|
|
(setq i 0)
|
|
(while (< i numcols)
|
|
(setq width (+ width (aref colw i))
|
|
i (1+ i))))
|
|
(if (>= width max-width)
|
|
(setq numcols nil)
|
|
(if colw
|
|
(setq col-widths colw))
|
|
(if (>= numcols (length widths))
|
|
(setq numcols nil)
|
|
(setq numcols (1+ numcols))))))
|
|
|
|
(if (not col-widths)
|
|
(cons (vector max-width) files)
|
|
(setq numcols (length col-widths))
|
|
(let* ((rows (ceiling (/ (length widths)
|
|
(float numcols))))
|
|
(len (* rows numcols))
|
|
(newfiles (make-list len nil))
|
|
(index 0)
|
|
(i 0)
|
|
(j 0))
|
|
(while (< j len)
|
|
(if (= i numcols)
|
|
(setq i 0 index (1+ index)))
|
|
(setcar (nthcdr j newfiles)
|
|
(nth (+ (* i rows) index) files))
|
|
(setq j (1+ j) i (1+ i)))
|
|
(cons col-widths newfiles)))))
|
|
|
|
(defun eshell-ls-decorated-name (file)
|
|
"Return FILE, possibly decorated.
|
|
Use TRUENAME for predicate tests, if passed."
|
|
(if eshell-ls-use-colors
|
|
(let ((face
|
|
(cond
|
|
((not (cdr file))
|
|
'eshell-ls-missing-face)
|
|
|
|
((stringp (cadr file))
|
|
'eshell-ls-symlink-face)
|
|
|
|
((eq (cadr file) t)
|
|
'eshell-ls-directory-face)
|
|
|
|
((not (eshell-ls-filetype-p (cdr file) ?-))
|
|
'eshell-ls-special-face)
|
|
|
|
((and (/= (user-uid) 0) ; root can execute anything
|
|
(eshell-ls-applicable (cdr file) 3
|
|
'file-executable-p (car file)))
|
|
'eshell-ls-executable-face)
|
|
|
|
((not (eshell-ls-applicable (cdr file) 1
|
|
'file-readable-p (car file)))
|
|
'eshell-ls-unreadable-face)
|
|
|
|
((string-match eshell-ls-archive-regexp (car file))
|
|
'eshell-ls-archive-face)
|
|
|
|
((string-match eshell-ls-backup-regexp (car file))
|
|
'eshell-ls-backup-face)
|
|
|
|
((string-match eshell-ls-product-regexp (car file))
|
|
'eshell-ls-product-face)
|
|
|
|
((string-match eshell-ls-clutter-regexp (car file))
|
|
'eshell-ls-clutter-face)
|
|
|
|
((not (eshell-ls-applicable (cdr file) 2
|
|
'file-writable-p (car file)))
|
|
'eshell-ls-readonly-face)
|
|
(eshell-ls-highlight-alist
|
|
(let ((tests eshell-ls-highlight-alist)
|
|
value)
|
|
(while tests
|
|
(if (funcall (caar tests) (car file) (cdr file))
|
|
(setq value (cdar tests) tests nil)
|
|
(setq tests (cdr tests))))
|
|
value)))))
|
|
(if face
|
|
(add-text-properties 0 (length (car file))
|
|
(list 'face face)
|
|
(car file)))))
|
|
(car file))
|
|
|
|
;;; Code:
|
|
|
|
;;; em-ls.el ends here
|