spacemacs/layers/+completion/helm/local/helm-spacemacs-help/helm-spacemacs-faq.el

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;;; helm-spacemacs-help.el --- Spacemacs layer exploration with `helm'.
;; Author: Sylvain Benner <sylvain.benner@gmail.com>
;; Keywords: helm, spacemacs
;; Version: 0.1
;; Package-Requires: ((helm "1.5"))
;; This file 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, or (at your option)
;; any later version.
;; This file 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 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.
;;; Commentary:
;; This package adds a convenient way to discover Spacemacs FAQs in a
;; a helm buffer.
;; These sources are not part of `helm-spacemacs-help' feature because
;; of its `org' dependency which triggers lots of `require'.
;;; Code:
(require 'helm-spacemacs-help)
(require 'helm-org)
(defvar helm-spacemacs-help--faq-filename
(concat spacemacs-docs-directory "FAQ.org")
"Location of the FAQ file.")
;;;###autoload
(defun helm-spacemacs-help-faq ()
"Helm session to search for the FAQ."
(interactive)
(helm-spacemacs-help-mode)
(helm :buffer "*helm: spacemacs*"
:sources `(,(helm-spacemacs-help//faq-source))))
(defun helm-spacemacs-help//faq-source ()
"Construct the helm source for the FAQ."
`((name . "FAQ")
(candidates . ,(helm-spacemacs-help//faq-candidates))
(candidate-number-limit)
(action . (("Go to question" . helm-spacemacs-help//faq-goto-marker)))))
(defun helm-spacemacs-help//faq-candidate (cand)
(let ((str (substring-no-properties (car cand))))
(when (string-match "\\`.*/\\([^/]*\\)/\\(.*\\)\\'" str)
(cons (concat (propertize
(match-string 1 str)
'face 'font-lock-type-face)
": " (match-string 2 str))
(cdr cand)))))
(defun helm-spacemacs-help//faq-candidates ()
(let* ((helm-org-format-outline-path nil)
(cands (helm-org-get-candidates (list helm-spacemacs-help--faq-filename)))
section result)
(dolist (c cands)
(let ((str (substring-no-properties (car c))))
(when (string-match "\\`\\* \\(.*\\)\\'" str)
(setq section (match-string 1 str)))
(when (string-match "\\`\\*\\* \\(.*\\)\\'" str)
(push (cons (concat (propertize section 'face 'font-lock-type-face)
": " (match-string 1 str))
(cdr c))
result))))
result))
(defun helm-spacemacs-help//faq-goto-marker (marker)
(find-file helm-spacemacs-help--faq-filename)
(goto-char marker)
(org-show-context)
(org-show-entry))
(provide 'helm-spacemacs-faq)
;;; helm-spacemacs-faq.el ends here