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;;; helm-man.el --- Man and woman UI
;; Copyright (C) 2012 Thierry Volpiatto <thierry.volpiatto@gmail.com>
;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(eval-when-compile (require 'cl))
(require 'helm)
(declare-function woman-file-name-all-completions "woman.el" (topic))
(declare-function Man-getpage-in-background "man.el" (topic))
(defvar helm-c-man-pages nil
"All man pages on system.
Will be calculated the first time you invoke helm with this
source.")
(defun helm-c-man-default-action (candidate)
"Default action for jumping to a woman or man page from helm."
(let ((wfiles (mapcar 'car (woman-file-name-all-completions candidate))))
(condition-case err
(if (> (length wfiles) 1)
(woman-find-file
(helm-comp-read
"ManFile: " wfiles :must-match t))
(woman candidate))
;; If woman is unable to format correctly
;; use man instead.
(error (kill-buffer) ; Kill woman buffer.
(Man-getpage-in-background candidate)))))
(defvar helm-c-source-man-pages
`((name . "Manual Pages")
(init . (lambda ()
(require 'woman)
(unless helm-c-man-pages
(setq helm-c-man-pages
(ignore-errors
(woman-file-name "" t)
(sort (mapcar 'car woman-topic-all-completions)
'string-lessp))))))
(candidates . helm-c-man-pages)
(action . (("Show with Woman" . helm-c-man-default-action)))
;; Woman does not work OS X
;; http://xahlee.org/emacs/modernization_man_page.html
(action-transformer . (lambda (actions candidate)
(if (eq system-type 'darwin)
'(("Show with Man" . man))
actions)))
(requires-pattern . 2)))
;;;###autoload
(defun helm-man-woman (arg)
"Preconfigured `helm' for Man and Woman pages.
With a prefix arg reinitialize the cache."
(interactive "P")
(when arg (setq helm-c-man-pages nil))
(helm-other-buffer 'helm-c-source-man-pages "*Helm man woman*"))
(provide 'helm-man)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-man.el ends here
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