lisp/erc/erc-imenu.el

   1 ;;; erc-imenu.el -- Imenu support for ERC
   2
   3 ;; Copyright (C) 2001-2002, 2004, 2006-2012 Free Software Foundation, Inc.
   4
   5 ;; Author: Mario Lang <mlang@delysid.org>
   6 ;; Keywords: comm
   7 ;; URL: http://www.emacswiki.org/cgi-bin/wiki.pl?ErcImenu
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; This file contains code related to Ibuffer and ERC.  Totally alpha,
  27 ;; needs work.  Usage:  Type / C-e C-h when in Ibuffer-mode to see new
  28 ;; limiting commands
  29
  30 ;;; Code:
  31
  32 ;;; Commentary:
  33
  34 ;; This package defines the function `erc-create-imenu-index'.  ERC
  35 ;; uses this for `imenu-create-index-function', and autoloads it.
  36 ;; Therefore, nothing needs to be done to use this package.
  37
  38 ;;; Code:
  39
  40 (require 'erc)
  41 (require 'imenu)
  42
  43 (defun erc-unfill-notice ()
  44   "Return text from point to a computed end as a string unfilled.
  45 Don't rely on this function, read it first!"
  46   (let ((str (buffer-substring
  47               (save-excursion
  48                 (re-search-forward (regexp-quote erc-notice-prefix)))
  49               (progn
  50                 (while (save-excursion
  51                          (forward-line 1)
  52                          (looking-at "    "))
  53                   (forward-line 1))
  54                 (end-of-line) (point)))))
  55     (with-temp-buffer
  56       (insert str)
  57       (goto-char (point-min))
  58       (while (re-search-forward "\n +" nil t)
  59         (replace-match " "))
  60       (buffer-substring (point-min) (point-max)))))
  61
  62 ;;;###autoload
  63 (defun erc-create-imenu-index ()
  64   (let ((index-alist '())
  65         (notice-alist '())
  66         (join-alist '())
  67         (left-alist '())
  68         (quit-alist '())
  69         (message-alist '())
  70         (mode-change-alist '())
  71         (topic-change-alist '())
  72         prev-pos)
  73     (goto-char (point-max))
  74     (imenu-progress-message prev-pos 0)
  75     (while (if (bolp)
  76                (> (forward-line -1)
  77                   -1)
  78              (progn (forward-line 0)
  79                     t))
  80       (imenu-progress-message prev-pos nil t)
  81       (save-match-data
  82         (when (looking-at (concat (regexp-quote erc-notice-prefix)
  83                                   "\\(.+\\)$"))
  84           (let ((notice-text  ;; Ugly hack, but seems to work.
  85                  (save-excursion (erc-unfill-notice)))
  86                 (pos (point)))
  87             (push (cons notice-text pos) notice-alist)
  88             (or
  89              (when (string-match "^\\(.*\\) has joined channel" notice-text)
  90                (push (cons (match-string 1 notice-text) pos) join-alist))
  91              (when (string-match "^\\(.+\\) has left channel" notice-text)
  92                (push (cons (match-string 1 notice-text) pos) left-alist))
  93              (when (string-match "^\\(.+\\) has quit\\(.*\\)$" notice-text)
  94                (push (cons (concat (match-string 1 notice-text)
  95                                    (match-string 2 notice-text))
  96                            (point))
  97                      quit-alist))
  98              (when (string-match
  99                     "^\\(\\S-+\\) (.+) has changed mode for \\S-+ to \\(.*\\)$"
 100                     notice-text)
 101                (push (cons (concat (match-string 1 notice-text) ": "
 102                                    (match-string 2 notice-text))
 103                            (point))
 104                      mode-change-alist))
 105              (when (string-match
 106                     "^\\(\\S-+\\) (.+) has set the topic for \\S-+: \\(.*\\)$"
 107                     notice-text)
 108                (push (cons (concat (match-string 1 notice-text) ": "
 109                                    (match-string 2 notice-text)) pos)
 110                      topic-change-alist)))))
 111         (when (looking-at "<\\(\\S-+\\)> \\(.+\\)$")
 112           (let ((from (match-string 1))
 113                 (message-text (match-string 2)))
 114             (push (cons (concat from ": " message-text) (point))
 115                   message-alist)))))
 116     (and notice-alist (push (cons "notices" notice-alist) index-alist))
 117     (and join-alist (push (cons "joined" join-alist) index-alist))
 118     (and left-alist (push (cons "parted" left-alist) index-alist))
 119     (and quit-alist (push (cons "quit" quit-alist) index-alist))
 120     (and mode-change-alist (push (cons "mode-change" mode-change-alist)
 121                                  index-alist))
 122     (and message-alist (push (cons "messages" message-alist) index-alist))
 123     (and topic-change-alist (push (cons "topic-change" topic-change-alist)
 124                                   index-alist))
 125     index-alist))
 126
 127 (provide 'erc-imenu)
 128
 129 ;;; erc-imenu.el ends here
 130 ;;
 131 ;; Local Variables:
 132 ;; indent-tabs-mode: t
 133 ;; tab-width: 8
 134 ;; End:
 135