lisp/erc/erc-imenu.el

   1 ;;; erc-imenu.el -- Imenu support for ERC
   2
   3 ;; Copyright (C) 2001-2002, 2004, 2006-2013 Free Software Foundation,
   4 ;; Inc.
   5
   6 ;; Author: Mario Lang <mlang@delysid.org>
   7 ;; Maintainer: FSF
   8 ;; Keywords: comm
   9 ;; URL: http://www.emacswiki.org/cgi-bin/wiki.pl?ErcImenu
  10
  11 ;; This file is part of GNU Emacs.
  12
  13 ;; GNU Emacs is free software: you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation, either version 3 of the License, or
  16 ;; (at your option) any later version.
  17
  18 ;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  25
  26 ;;; Commentary:
  27
  28 ;; This file contains code related to Ibuffer and ERC.  Totally alpha,
  29 ;; needs work.  Usage:  Type / C-e C-h when in Ibuffer-mode to see new
  30 ;; limiting commands
  31
  32 ;;; Code:
  33
  34 ;;; Commentary:
  35
  36 ;; This package defines the function `erc-create-imenu-index'.  ERC
  37 ;; uses this for `imenu-create-index-function', and autoloads it.
  38 ;; Therefore, nothing needs to be done to use this package.
  39
  40 ;;; Code:
  41
  42 (require 'erc)
  43 (require 'imenu)
  44
  45 (defun erc-unfill-notice ()
  46   "Return text from point to a computed end as a string unfilled.
  47 Don't rely on this function, read it first!"
  48   (let ((str (buffer-substring
  49               (save-excursion
  50                 (re-search-forward (regexp-quote erc-notice-prefix)))
  51               (progn
  52                 (while (save-excursion
  53                          (forward-line 1)
  54                          (looking-at "    "))
  55                   (forward-line 1))
  56                 (end-of-line) (point)))))
  57     (with-temp-buffer
  58       (insert str)
  59       (goto-char (point-min))
  60       (while (re-search-forward "\n +" nil t)
  61         (replace-match " "))
  62       (buffer-substring (point-min) (point-max)))))
  63
  64 ;;;###autoload
  65 (defun erc-create-imenu-index ()
  66   (let ((index-alist '())
  67         (notice-alist '())
  68         (join-alist '())
  69         (left-alist '())
  70         (quit-alist '())
  71         (message-alist '())
  72         (mode-change-alist '())
  73         (topic-change-alist '())
  74         prev-pos)
  75     (goto-char (point-max))
  76     (imenu-progress-message prev-pos 0)
  77     (while (if (bolp)
  78                (> (forward-line -1)
  79                   -1)
  80              (progn (forward-line 0)
  81                     t))
  82       (imenu-progress-message prev-pos nil t)
  83       (save-match-data
  84         (when (looking-at (concat (regexp-quote erc-notice-prefix)
  85                                   "\\(.+\\)$"))
  86           (let ((notice-text  ;; Ugly hack, but seems to work.
  87                  (save-excursion (erc-unfill-notice)))
  88                 (pos (point)))
  89             (push (cons notice-text pos) notice-alist)
  90             (or
  91              (when (string-match "^\\(.*\\) has joined channel" notice-text)
  92                (push (cons (match-string 1 notice-text) pos) join-alist))
  93              (when (string-match "^\\(.+\\) has left channel" notice-text)
  94                (push (cons (match-string 1 notice-text) pos) left-alist))
  95              (when (string-match "^\\(.+\\) has quit\\(.*\\)$" notice-text)
  96                (push (cons (concat (match-string 1 notice-text)
  97                                    (match-string 2 notice-text))
  98                            (point))
  99                      quit-alist))
 100              (when (string-match
 101                     "^\\(\\S-+\\) (.+) has changed mode for \\S-+ to \\(.*\\)$"
 102                     notice-text)
 103                (push (cons (concat (match-string 1 notice-text) ": "
 104                                    (match-string 2 notice-text))
 105                            (point))
 106                      mode-change-alist))
 107              (when (string-match
 108                     "^\\(\\S-+\\) (.+) has set the topic for \\S-+: \\(.*\\)$"
 109                     notice-text)
 110                (push (cons (concat (match-string 1 notice-text) ": "
 111                                    (match-string 2 notice-text)) pos)
 112                      topic-change-alist)))))
 113         (when (looking-at "<\\(\\S-+\\)> \\(.+\\)$")
 114           (let ((from (match-string 1))
 115                 (message-text (match-string 2)))
 116             (push (cons (concat from ": " message-text) (point))
 117                   message-alist)))))
 118     (and notice-alist (push (cons "notices" notice-alist) index-alist))
 119     (and join-alist (push (cons "joined" join-alist) index-alist))
 120     (and left-alist (push (cons "parted" left-alist) index-alist))
 121     (and quit-alist (push (cons "quit" quit-alist) index-alist))
 122     (and mode-change-alist (push (cons "mode-change" mode-change-alist)
 123                                  index-alist))
 124     (and message-alist (push (cons "messages" message-alist) index-alist))
 125     (and topic-change-alist (push (cons "topic-change" topic-change-alist)
 126                                   index-alist))
 127     index-alist))
 128
 129 (provide 'erc-imenu)
 130
 131 ;;; erc-imenu.el ends here
 132 ;;
 133 ;; Local Variables:
 134 ;; indent-tabs-mode: t
 135 ;; tab-width: 8
 136 ;; End:
 137