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;;; w3m-dtree.el --- The add-on program to display local directory tree.
;; Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2009, 2017
;; TSUCHIYA Masatoshi <>
;; Author: Hideyuki SHIRAI <>,
;; TSUCHIYA Masatoshi <>
;; Keywords: w3m, WWW, hypermedia, directory, tree
;; This program 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.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; w3m-dtree.el is the add-on program of emacs-w3m to display local
;; directory tree. For more detail about emacs-w3m, see:
;;; Code:
(require 'w3m)
(defcustom w3m-dtree-default-allfiles nil
"*If non-nil, set 'allfiles' to default."
:group 'w3m
:type 'boolean)
(defcustom w3m-dtree-directory-depth 8
"*Interger of a depth of the viewing directory."
:group 'w3m
:type '(choice
(const :tag "No limit" nil)
(integer :format "%t: %v\n" :tag "depth" 10)))
(defcustom w3m-dtree-indent-strings ["|-" "+-" "| " " "]
"*Vector of strings to be used for indentation with w3m-dtree.
If use default value or choice 'ASCII', display like this,
| +-CVS/
If you care for another style, set manually and try it :-).
:group 'w3m
:type '(radio
(const :format "ASCII: " ["|-" "+-" "| " " "])
:convert-widget w3m-widget-type-convert-widget
(let ((defaults (if (equal w3m-language "Japanese")
(lambda (s)
(decode-coding-string s 'iso-2022-7bit))
'("\e$B('\e(B" "\e$B(&\e(B"
"\e$B(\"\e(B" "\e$B!!\e(B")))
["|-" "+-" "| " " "])))
`(:format "Others:\n%v" :indent 4
(string :format "%{|-%} %v\n"
:sample-face widget-field-face
:value ,(aref defaults 0))
(string :format "%{+-%} %v\n"
:sample-face widget-field-face
:value ,(aref defaults 1))
(string :format "%{| %} %v\n"
:sample-face widget-field-face
:value ,(aref defaults 2))
(string :format "%{ %} %v"
:sample-face widget-field-face
:value ,(aref defaults 3)))))))
(defcustom w3m-dtree-stop-strings ["|=" "+="]
"*Vector of strings to be used for indentation when a depth of directory
over the 'w3m-dtree-directory-depth'."
:group 'w3m
:type '(radio
(const :format "ASCII: " ["|=" "+="])
(const :format "ASCII Bold: " ["<b>|-</b>" "<b>+-</b>"])
:convert-widget w3m-widget-type-convert-widget
(let ((defaults (if (equal w3m-language "Japanese")
(lambda (s)
(decode-coding-string s 'iso-2022-7bit))
'("\e$B(<\e(B" "\e$B(1\e(B")))
["|=" "+="])))
`(:format "Others:\n%v" :indent 4
(string :format "|= %{|=%} %v\n"
:sample-face bold
:value ,(aref defaults 0))
(string :format "+= %{+=%} %v\n"
:sample-face bold
:value ,(aref defaults 1)))))))
(defun w3m-dtree-expand-file-name (path)
(if (string-match "^\\(.\\):\\(.*\\)" path)
(if w3m-use-cygdrive
(concat "/cygdrive/"
(match-string 1 path) (match-string 2 path))
(concat "/" (match-string 1 path) "|" (match-string 2 path)))
(defun w3m-dtree-directory-name (path)
(when (and w3m-treat-drive-letter
(setq path (concat
(or (match-string 1 path)
(match-string 2 path))
(substring path (match-end 0)))))
(defmacro w3m-dtree-has-child (path)
`(let ((w32-get-true-file-link-count t)) ;; true link count for Meadow
(and (nth 1 (file-attributes ,path))
(/= (nth 1 (file-attributes ,path)) 2))))
(defun w3m-dtree-create-sub (path allfiles dirprefix fileprefix indent depth)
(let* ((files (directory-files path t))
(limit (and (integerp w3m-dtree-directory-depth)
(>= depth w3m-dtree-directory-depth)))
(indent-sub1 (if limit
(aref w3m-dtree-stop-strings 0)
(aref w3m-dtree-indent-strings 0)))
(indent-sub2 (aref w3m-dtree-indent-strings 2))
file fullpath tmp)
(setq files (delete (concat (file-name-as-directory path) ".")
(delete (concat (file-name-as-directory path) "..")
(unless allfiles
(setq tmp files)
(while (setq file (car tmp))
(unless (file-directory-p file)
(setq files (delete file files)))
(setq tmp (cdr tmp))))
(while (setq fullpath (car files))
(when (= (length files) 1)
(if limit
(setq indent-sub1 (aref w3m-dtree-stop-strings 1))
(setq indent-sub1 (aref w3m-dtree-indent-strings 1)))
(setq indent-sub2 (aref w3m-dtree-indent-strings 3)))
(setq file (file-name-nondirectory fullpath))
((or (not allfiles) (file-directory-p fullpath))
(insert (format "%s%s%s<A HREF=\"%s%s\">%s</A>\n"
indent indent-sub1
(if allfiles "<B>[d]</B>" "")
(w3m-dtree-expand-file-name (file-name-as-directory fullpath))
(concat file "/")))
(when (and (null limit)
(or allfiles (w3m-dtree-has-child fullpath)))
(w3m-dtree-create-sub fullpath allfiles dirprefix fileprefix
(concat indent indent-sub2) (1+ depth))))
((and allfiles (file-exists-p fullpath))
(insert (format "%s%s%s<A HREF=\"%s%s\">%s</A>\n"
indent indent-sub1
(if allfiles "(f)" "")
fileprefix (w3m-dtree-expand-file-name fullpath)
(setq files (cdr files)))))
(defun w3m-dtree-create (path allfiles dirprefix fileprefix)
(let ((charset (or (car (rassq w3m-file-name-coding-system
(insert "<!doctype html public \"-//W3C//DTD HTML 3.2//EN\">\n"
"<meta http-equiv=\"CONTENT-TYPE\" "
"content=\"text/html; charset="
(symbol-name charset)
(insert (format "<A HREF=\"%s%s\">%s</A>%s\n"
dirprefix (w3m-dtree-expand-file-name path) path
(if allfiles " (allfiles)" "")))
(if (file-directory-p path)
(w3m-dtree-create-sub path allfiles dirprefix fileprefix " " 0)
(insert (format "\n<h3>Warning: Directory not found.</h3>\n")))
(insert "</pre>\n</body>\n</html>\n")))
(defun w3m-about-dtree (url &optional nodecode allfiles &rest args)
(let ((prelen (length "about://dtree"))
(dirprefix "about://dtree")
(fileprefix "file://")
(if (string-match "\\?allfiles=\\(?:\\(true\\)\\|false\\)$" url)
(setq path (substring url prelen (match-beginning 0)))
(if (match-beginning 1) (setq allfiles t)))
(if w3m-dtree-default-allfiles
(setq allfiles (not allfiles)))
(setq path (substring url prelen)))
;; counter drive letter
(setq path (file-name-as-directory (w3m-dtree-directory-name path)))
(setq default-directory path)
(w3m-message "Dtree (%s)..." path)
(w3m-dtree-create path allfiles dirprefix fileprefix)
(w3m-message "Dtree...done")
(defun w3m-dtree (allfiles path)
"Display directory tree on local file system.
If called with 'prefix argument', display all directorys and files."
(interactive "P\nDDtree directory: ")
(if w3m-dtree-default-allfiles
(setq allfiles (not allfiles)))
(w3m-goto-url (format "about://dtree%s%s"
(expand-file-name path)))
(if allfiles "?allfiles=true" ""))))
(provide 'w3m-dtree)
;;; w3m-dtree.el ends here