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;;; w3m-perldoc.el --- The add-on program to view Perl documents.
;; Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007
;; TSUCHIYA Masatoshi <tsuchiya@namazu.org>
;; Author: TSUCHIYA Masatoshi <tsuchiya@namazu.org>
;; Keywords: w3m, perldoc
;; This file is a part of emacs-w3m.
;; 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
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; 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-perldoc.el is the add-on program of emacs-w3m to view Perl
;; documents. For more detail about emacs-w3m, see:
;;
;; http://emacs-w3m.namazu.org/
;;; Code:
(require 'w3m)
(defgroup w3m-perldoc nil
"Perldoc front-end for emacs-w3m."
:group 'w3m
:prefix "w3m-perldoc-")
(defcustom w3m-perldoc-command "perldoc"
"*Name of the executable file of perldoc."
:group 'w3m-perldoc
:type '(string :size 0))
(defcustom w3m-perldoc-pod2html-command "pod2html"
"*Name of the executable file of pod2html."
:group 'w3m-perldoc
:type '(string :size 0))
(defcustom w3m-perldoc-pod2html-arguments
'("--noindex")
"*Arguments of pod2html."
:group 'w3m-perldoc
:type '(repeat (string :format "Argument: %v\n" :size 0))
:get (lambda (symbol)
(delq nil (delete "" (mapcar (lambda (x) (if (stringp x) x))
(default-value symbol)))))
:set (lambda (symbol value)
(custom-set-default
symbol
(delq nil (delete "" (mapcar (lambda (x) (if (stringp x) x))
value))))))
(defcustom w3m-perldoc-input-coding-system
(if (string= "Japanese" w3m-language)
'euc-japan
(if (w3m-find-coding-system 'utf-8)
'utf-8
'iso-latin-1))
"*Coding system used when writing to `w3m-perldoc-command'."
:group 'w3m-perldoc
:type '(coding-system :size 0))
(defcustom w3m-perldoc-output-coding-system
'undecided
"*Coding system used when reading from `w3m-perldoc-command'."
:group 'w3m-perldoc
:type '(coding-system :size 0))
;;;###autoload
(defun w3m-about-perldoc (url &optional no-decode no-cache &rest args)
(when (string-match "\\`about://perldoc/" url)
(let ((docname (if (= (length url) (match-end 0))
"perl"
(w3m-url-decode-string (substring url (match-end 0)))))
(default-directory w3m-profile-directory)
(process-environment (copy-sequence process-environment)))
;; To specify the place in which pod2html generates its cache files.
(setenv "HOME" (expand-file-name w3m-profile-directory))
(and (let ((coding-system-for-read w3m-perldoc-output-coding-system))
(zerop (call-process w3m-perldoc-command
nil t nil "-u" docname)))
(let ((coding-system-for-write w3m-perldoc-input-coding-system)
(coding-system-for-read w3m-perldoc-input-coding-system))
(zerop (apply (function call-process-region)
(point-min) (point-max)
w3m-perldoc-pod2html-command
t '(t nil) nil
(append w3m-perldoc-pod2html-arguments
'("--htmlroot=about://perldoc")))))
(let ((case-fold-search t))
(goto-char (point-min))
(while (re-search-forward
"<a href=\"about://perldoc/\\([^\"]*\\)\\(\\.html\\)\">" nil t)
(delete-region (match-beginning 2) (match-end 2))
(save-restriction
(narrow-to-region (match-beginning 1) (match-end 1))
(while (search-backward "/" nil t)
(delete-char 1)
(insert "::"))
(goto-char (point-max))))
"text/html")))))
;;;###autoload
(defun w3m-perldoc (docname)
"View Perl documents."
(interactive "sDocument: ")
(w3m-goto-url (concat "about://perldoc/" (w3m-url-encode-string docname))))
(provide 'w3m-perldoc)
;;; w3m-perldoc.el ends here.
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