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1 ;;; gnus-topic.el --- a folding minor mode for Gnus group buffers
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2 ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
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3
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4 ;; Author: Ilja Weis <kult@uni-paderborn.de>
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5 ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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6 ;; Keywords: news
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7
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8 ;; This file is part of GNU Emacs.
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9
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10 ;; GNU Emacs is free software; you can redistribute it and/or modify
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11 ;; it under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; GNU Emacs is distributed in the hope that it will be useful,
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16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ;; GNU General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25 ;;; Commentary:
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26
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27 ;;; Code:
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28
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29 (require 'gnus)
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30 (require 'gnus-group)
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31 (require 'gnus-start)
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32
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33 (defgroup gnus-topic nil
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34 "Group topics."
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35 :group 'gnus-group)
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36
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37 (defvar gnus-topic-mode nil
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38 "Minor mode for Gnus group buffers.")
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39
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40 (defcustom gnus-topic-mode-hook nil
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41 "Hook run in topic mode buffers."
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42 :type 'hook
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43 :group 'gnus-topic)
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44
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45 (defcustom gnus-topic-line-format "%i[ %(%{%n%}%) -- %A ]%v\n"
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46 "Format of topic lines.
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47 It works along the same lines as a normal formatting string,
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48 with some simple extensions.
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49
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50 %i Indentation based on topic level.
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51 %n Topic name.
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52 %v Nothing if the topic is visible, \"...\" otherwise.
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53 %g Number of groups in the topic.
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54 %a Number of unread articles in the groups in the topic.
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55 %A Number of unread articles in the groups in the topic and its subtopics.
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56 "
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57 :type 'string
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58 :group 'gnus-topic)
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59
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60 (defcustom gnus-topic-indent-level 2
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61 "*How much each subtopic should be indented."
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62 :type 'integer
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63 :group 'gnus-topic)
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64
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65 (defcustom gnus-topic-display-empty-topics t
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66 "*If non-nil, display the topic lines even of topics that have no unread articles."
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67 :type 'boolean
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68 :group 'gnus-topic)
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69
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70 ;; Internal variables.
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71
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72 (defvar gnus-topic-active-topology nil)
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73 (defvar gnus-topic-active-alist nil)
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74
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75 (defvar gnus-topology-checked-p nil
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76 "Whether the topology has been checked in this session.")
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77
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78 (defvar gnus-topic-killed-topics nil)
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79 (defvar gnus-topic-inhibit-change-level nil)
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80
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81 (defconst gnus-topic-line-format-alist
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82 `((?n name ?s)
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83 (?v visible ?s)
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84 (?i indentation ?s)
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85 (?g number-of-groups ?d)
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86 (?a (gnus-topic-articles-in-topic entries) ?d)
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87 (?A total-number-of-articles ?d)
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88 (?l level ?d)))
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89
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90 (defvar gnus-topic-line-format-spec nil)
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91
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92 ;;; Utility functions
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93
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94 (defun gnus-group-topic-name ()
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95 "The name of the topic on the current line."
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96 (let ((topic (get-text-property (gnus-point-at-bol) 'gnus-topic)))
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97 (and topic (symbol-name topic))))
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98
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99 (defun gnus-group-topic-level ()
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100 "The level of the topic on the current line."
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101 (get-text-property (gnus-point-at-bol) 'gnus-topic-level))
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102
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103 (defun gnus-group-topic-unread ()
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104 "The number of unread articles in topic on the current line."
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105 (get-text-property (gnus-point-at-bol) 'gnus-topic-unread))
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106
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107 (defun gnus-topic-unread (topic)
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108 "Return the number of unread articles in TOPIC."
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109 (or (save-excursion
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110 (and (gnus-topic-goto-topic topic)
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111 (gnus-group-topic-unread)))
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112 0))
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113
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114 (defun gnus-group-topic-p ()
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115 "Return non-nil if the current line is a topic."
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116 (gnus-group-topic-name))
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117
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118 (defun gnus-topic-visible-p ()
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119 "Return non-nil if the current topic is visible."
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120 (get-text-property (gnus-point-at-bol) 'gnus-topic-visible))
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121
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122 (defun gnus-topic-articles-in-topic (entries)
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123 (let ((total 0)
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124 number)
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125 (while entries
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126 (when (numberp (setq number (car (pop entries))))
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127 (incf total number)))
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128 total))
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129
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130 (defun gnus-group-topic (group)
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131 "Return the topic GROUP is a member of."
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132 (let ((alist gnus-topic-alist)
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133 out)
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134 (while alist
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135 (when (member group (cdar alist))
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136 (setq out (caar alist)
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137 alist nil))
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138 (setq alist (cdr alist)))
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139 out))
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140
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141 (defun gnus-group-parent-topic (group)
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142 "Return the topic GROUP is member of by looking at the group buffer."
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143 (save-excursion
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144 (set-buffer gnus-group-buffer)
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145 (if (gnus-group-goto-group group)
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146 (gnus-current-topic)
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147 (gnus-group-topic group))))
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148
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149 (defun gnus-topic-goto-topic (topic)
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150 "Go to TOPIC."
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151 (when topic
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152 (gnus-goto-char (text-property-any (point-min) (point-max)
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153 'gnus-topic (intern topic)))))
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154
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155 (defun gnus-current-topic ()
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156 "Return the name of the current topic."
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157 (let ((result
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158 (or (get-text-property (point) 'gnus-topic)
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159 (save-excursion
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160 (and (gnus-goto-char (previous-single-property-change
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161 (point) 'gnus-topic))
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162 (get-text-property (max (1- (point)) (point-min))
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163 'gnus-topic))))))
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164 (when result
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165 (symbol-name result))))
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166
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167 (defun gnus-current-topics ()
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168 "Return a list of all current topics, lowest in hierarchy first."
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169 (let ((topic (gnus-current-topic))
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170 topics)
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171 (while topic
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172 (push topic topics)
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173 (setq topic (gnus-topic-parent-topic topic)))
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174 (nreverse topics)))
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175
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176 (defun gnus-group-active-topic-p ()
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177 "Say whether the current topic comes from the active topics."
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178 (save-excursion
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179 (beginning-of-line)
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180 (get-text-property (point) 'gnus-active)))
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181
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182 (defun gnus-topic-find-groups (topic &optional level all)
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183 "Return entries for all visible groups in TOPIC."
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184 (let ((groups (cdr (assoc topic gnus-topic-alist)))
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185 info clevel unread group lowest params visible-groups entry active)
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186 (setq lowest (or lowest 1))
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187 (setq level (or level 7))
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188 ;; We go through the newsrc to look for matches.
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189 (while groups
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190 (when (setq group (pop groups))
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191 (setq entry (gnus-gethash group gnus-newsrc-hashtb)
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192 info (nth 2 entry)
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193 params (gnus-info-params info)
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194 active (gnus-active group)
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195 unread (or (car entry)
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196 (and (not (equal group "dummy.group"))
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197 active
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198 (- (1+ (cdr active)) (car active))))
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199 clevel (or (gnus-info-level info)
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200 (if (member group gnus-zombie-list) 8 9))))
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108
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201 (and
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202 unread ; nil means that the group is dead.
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203 (<= clevel level)
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204 (>= clevel lowest) ; Is inside the level we want.
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205 (or all
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206 (if (eq unread t)
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207 gnus-group-list-inactive-groups
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208 (> unread 0))
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209 (and gnus-list-groups-with-ticked-articles
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210 (cdr (assq 'tick (gnus-info-marks info))))
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211 ; Has right readedness.
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212 ;; Check for permanent visibility.
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213 (and gnus-permanently-visible-groups
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214 (string-match gnus-permanently-visible-groups group))
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215 (memq 'visible params)
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216 (cdr (assq 'visible params)))
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217 ;; Add this group to the list of visible groups.
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218 (push (or entry group) visible-groups)))
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219 (nreverse visible-groups)))
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220
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221 (defun gnus-topic-previous-topic (topic)
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222 "Return the previous topic on the same level as TOPIC."
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223 (let ((top (cddr (gnus-topic-find-topology
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224 (gnus-topic-parent-topic topic)))))
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225 (unless (equal topic (caaar top))
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226 (while (and top (not (equal (caaadr top) topic)))
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227 (setq top (cdr top)))
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228 (caaar top))))
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229
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230 (defun gnus-topic-parent-topic (topic &optional topology)
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231 "Return the parent of TOPIC."
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232 (unless topology
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233 (setq topology gnus-topic-topology))
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234 (let ((parent (car (pop topology)))
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235 result found)
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236 (while (and topology
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237 (not (setq found (equal (caaar topology) topic)))
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110
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238 (not (setq result (gnus-topic-parent-topic
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239 topic (car topology)))))
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240 (setq topology (cdr topology)))
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241 (or result (and found parent))))
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242
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243 (defun gnus-topic-next-topic (topic &optional previous)
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244 "Return the next sibling of TOPIC."
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108
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245 (let ((parentt (cddr (gnus-topic-find-topology
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246 (gnus-topic-parent-topic topic))))
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247 prev)
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248 (while (and parentt
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249 (not (equal (caaar parentt) topic)))
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250 (setq prev (caaar parentt)
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251 parentt (cdr parentt)))
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252 (if previous
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253 prev
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254 (caaadr parentt))))
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255
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118
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256 (defun gnus-topic-forward-topic (num)
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257 "Go to the next topic on the same level as the current one."
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258 (let* ((topic (gnus-current-topic))
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259 (way (if (< num 0) 'gnus-topic-previous-topic
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260 'gnus-topic-next-topic))
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261 (num (abs num)))
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262 (while (and (not (zerop num))
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263 (setq topic (funcall way topic)))
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264 (when (gnus-topic-goto-topic topic)
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265 (decf num)))
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266 (unless (zerop num)
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267 (goto-char (point-max)))
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268 num))
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269
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270 (defun gnus-topic-find-topology (topic &optional topology level remove)
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271 "Return the topology of TOPIC."
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272 (unless topology
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273 (setq topology gnus-topic-topology)
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274 (setq level 0))
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275 (let ((top topology)
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276 result)
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277 (if (equal (caar topology) topic)
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278 (progn
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279 (when remove
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280 (delq topology remove))
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281 (cons level topology))
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282 (setq topology (cdr topology))
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283 (while (and topology
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284 (not (setq result (gnus-topic-find-topology
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285 topic (car topology) (1+ level)
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286 (and remove top)))))
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287 (setq topology (cdr topology)))
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288 result)))
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289
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290 (defvar gnus-tmp-topics nil)
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291 (defun gnus-topic-list (&optional topology)
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292 "Return a list of all topics in the topology."
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293 (unless topology
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294 (setq topology gnus-topic-topology
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295 gnus-tmp-topics nil))
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296 (push (caar topology) gnus-tmp-topics)
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297 (mapcar 'gnus-topic-list (cdr topology))
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298 gnus-tmp-topics)
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299
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300 ;;; Topic parameter jazz
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301
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302 (defun gnus-topic-parameters (topic)
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303 "Return the parameters for TOPIC."
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304 (let ((top (gnus-topic-find-topology topic)))
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305 (when top
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306 (nth 3 (cadr top)))))
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307
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308 (defun gnus-topic-set-parameters (topic parameters)
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309 "Set the topic parameters of TOPIC to PARAMETERS."
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310 (let ((top (gnus-topic-find-topology topic)))
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311 (unless top
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312 (error "No such topic: %s" topic))
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313 ;; We may have to extend if there is no parameters here
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314 ;; to begin with.
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315 (unless (nthcdr 2 (cadr top))
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316 (nconc (cadr top) (list nil)))
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317 (unless (nthcdr 3 (cadr top))
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318 (nconc (cadr top) (list nil)))
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319 (setcar (nthcdr 3 (cadr top)) parameters)
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320 (gnus-dribble-enter
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321 (format "(gnus-topic-set-parameters %S '%S)" topic parameters))))
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322
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323 (defun gnus-group-topic-parameters (group)
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324 "Compute the group parameters for GROUP taking into account inheritance from topics."
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325 (let ((params-list (list (gnus-group-get-parameter group)))
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326 topics params param out)
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327 (save-excursion
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328 (gnus-group-goto-group group)
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329 (setq topics (gnus-current-topics))
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330 (while topics
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331 (push (gnus-topic-parameters (pop topics)) params-list))
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332 ;; We probably have lots of nil elements here, so
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333 ;; we remove them. Probably faster than doing this "properly".
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334 (setq params-list (delq nil params-list))
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335 ;; Now we have all the parameters, so we go through them
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336 ;; and do inheritance in the obvious way.
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337 (while (setq params (pop params-list))
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338 (while (setq param (pop params))
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339 (when (atom param)
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340 (setq param (cons param t)))
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341 ;; Override any old versions of this param.
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342 (setq out (delq (assq (car param) out) out))
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343 (push param out)))
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344 ;; Return the resulting parameter list.
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345 out)))
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346
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347 ;;; General utility functions
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348
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349 (defun gnus-topic-enter-dribble ()
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350 (gnus-dribble-enter
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351 (format "(setq gnus-topic-topology '%S)" gnus-topic-topology)))
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352
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353 ;;; Generating group buffers
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354
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355 (defun gnus-group-prepare-topics (level &optional all lowest regexp list-topic topic-level)
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356 "List all newsgroups with unread articles of level LEVEL or lower, and
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357 use the `gnus-group-topics' to sort the groups.
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358 If ALL is non-nil, list groups that have no unread articles.
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359 If LOWEST is non-nil, list all newsgroups of level LOWEST or higher."
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360 (set-buffer gnus-group-buffer)
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361 (let ((buffer-read-only nil)
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362 (lowest (or lowest 1)))
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363
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364 (when (or (not gnus-topic-alist)
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365 (not gnus-topology-checked-p))
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366 (gnus-topic-check-topology))
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70
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367
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108
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368 (unless list-topic
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369 (erase-buffer))
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108
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370
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371 ;; List dead groups?
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372 (when (and (>= level gnus-level-zombie) (<= lowest gnus-level-zombie))
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108
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373 (gnus-group-prepare-flat-list-dead
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374 (setq gnus-zombie-list (sort gnus-zombie-list 'string<))
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375 gnus-level-zombie ?Z
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376 regexp))
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108
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377
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378 (when (and (>= level gnus-level-killed) (<= lowest gnus-level-killed))
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108
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379 (gnus-group-prepare-flat-list-dead
|
|
98
|
380 (setq gnus-killed-list (sort gnus-killed-list 'string<))
|
|
|
381 gnus-level-killed ?K
|
|
|
382 regexp))
|
|
|
383
|
|
|
384 ;; Use topics.
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|
385 (prog1
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386 (when (< lowest gnus-level-zombie)
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|
|
387 (if list-topic
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|
|
388 (let ((top (gnus-topic-find-topology list-topic)))
|
|
|
389 (gnus-topic-prepare-topic (cdr top) (car top)
|
|
|
390 (or topic-level level) all))
|
|
|
391 (gnus-topic-prepare-topic gnus-topic-topology 0
|
|
|
392 (or topic-level level) all)))
|
|
108
|
393
|
|
98
|
394 (gnus-group-set-mode-line)
|
|
|
395 (setq gnus-group-list-mode (cons level all))
|
|
|
396 (run-hooks 'gnus-group-prepare-hook))))
|
|
70
|
397
|
|
98
|
398 (defun gnus-topic-prepare-topic (topicl level &optional list-level all silent)
|
|
|
399 "Insert TOPIC into the group buffer.
|
|
|
400 If SILENT, don't insert anything. Return the number of unread
|
|
|
401 articles in the topic and its subtopics."
|
|
|
402 (let* ((type (pop topicl))
|
|
|
403 (entries (gnus-topic-find-groups (car type) list-level all))
|
|
|
404 (visiblep (and (eq (nth 1 type) 'visible) (not silent)))
|
|
108
|
405 (gnus-group-indentation
|
|
98
|
406 (make-string (* gnus-topic-indent-level level) ? ))
|
|
|
407 (beg (progn (beginning-of-line) (point)))
|
|
|
408 (topicl (reverse topicl))
|
|
|
409 (all-entries entries)
|
|
|
410 (point-max (point-max))
|
|
|
411 (unread 0)
|
|
|
412 (topic (car type))
|
|
|
413 info entry end active tick)
|
|
|
414 ;; Insert any sub-topics.
|
|
|
415 (while topicl
|
|
|
416 (incf unread
|
|
108
|
417 (gnus-topic-prepare-topic
|
|
98
|
418 (pop topicl) (1+ level) list-level all
|
|
|
419 (not visiblep))))
|
|
|
420 (setq end (point))
|
|
|
421 (goto-char beg)
|
|
|
422 ;; Insert all the groups that belong in this topic.
|
|
|
423 (while (setq entry (pop entries))
|
|
108
|
424 (when visiblep
|
|
98
|
425 (if (stringp entry)
|
|
|
426 ;; Dead groups.
|
|
|
427 (gnus-group-insert-group-line
|
|
|
428 entry (if (member entry gnus-zombie-list) 8 9)
|
|
|
429 nil (- (1+ (cdr (setq active (gnus-active entry))))
|
|
|
430 (car active))
|
|
|
431 nil)
|
|
|
432 ;; Living groups.
|
|
|
433 (when (setq info (nth 2 entry))
|
|
108
|
434 (gnus-group-insert-group-line
|
|
98
|
435 (gnus-info-group info)
|
|
|
436 (gnus-info-level info) (gnus-info-marks info)
|
|
|
437 (car entry) (gnus-info-method info)))))
|
|
|
438 (when (and (listp entry)
|
|
151
|
439 (numberp (car entry)))
|
|
98
|
440 (incf unread (car entry)))
|
|
100
|
441 (when (listp entry)
|
|
98
|
442 (setq tick t)))
|
|
|
443 (goto-char beg)
|
|
|
444 ;; Insert the topic line.
|
|
|
445 (when (and (not silent)
|
|
|
446 (or gnus-topic-display-empty-topics ;We want empty topics
|
|
|
447 (not (zerop unread)) ;Non-empty
|
|
108
|
448 tick ;Ticked articles
|
|
98
|
449 (/= point-max (point-max)))) ;Unactivated groups
|
|
|
450 (gnus-extent-start-open (point))
|
|
108
|
451 (gnus-topic-insert-topic-line
|
|
98
|
452 (car type) visiblep
|
|
|
453 (not (eq (nth 2 type) 'hidden))
|
|
|
454 level all-entries unread))
|
|
|
455 (goto-char end)
|
|
|
456 unread))
|
|
0
|
457
|
|
98
|
458 (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level)
|
|
|
459 "Remove the current topic."
|
|
|
460 (let ((topic (gnus-group-topic-name))
|
|
|
461 (level (gnus-group-topic-level))
|
|
|
462 (beg (progn (beginning-of-line) (point)))
|
|
|
463 buffer-read-only)
|
|
|
464 (when topic
|
|
|
465 (while (and (zerop (forward-line 1))
|
|
|
466 (> (or (gnus-group-topic-level) (1+ level)) level)))
|
|
|
467 (delete-region beg (point))
|
|
|
468 ;; Do the change in this rather odd manner because it has been
|
|
|
469 ;; reported that some topics share parts of some lists, for some
|
|
|
470 ;; reason. I have been unable to determine why this is the
|
|
|
471 ;; case, but this hack seems to take care of things.
|
|
|
472 (let ((data (cadr (gnus-topic-find-topology topic))))
|
|
|
473 (setcdr data
|
|
|
474 (list (if insert 'visible 'invisible)
|
|
|
475 (if hide 'hide nil)
|
|
|
476 (cadddr data))))
|
|
|
477 (if total-remove
|
|
|
478 (setq gnus-topic-alist
|
|
|
479 (delq (assoc topic gnus-topic-alist) gnus-topic-alist))
|
|
|
480 (gnus-topic-insert-topic topic in-level)))))
|
|
|
481
|
|
|
482 (defun gnus-topic-insert-topic (topic &optional level)
|
|
|
483 "Insert TOPIC."
|
|
108
|
484 (gnus-group-prepare-topics
|
|
98
|
485 (car gnus-group-list-mode) (cdr gnus-group-list-mode)
|
|
|
486 nil nil topic level))
|
|
108
|
487
|
|
98
|
488 (defun gnus-topic-fold (&optional insert)
|
|
|
489 "Remove/insert the current topic."
|
|
|
490 (let ((topic (gnus-group-topic-name)))
|
|
|
491 (when topic
|
|
|
492 (save-excursion
|
|
|
493 (if (not (gnus-group-active-topic-p))
|
|
|
494 (gnus-topic-remove-topic
|
|
|
495 (or insert (not (gnus-topic-visible-p))))
|
|
|
496 (let ((gnus-topic-topology gnus-topic-active-topology)
|
|
|
497 (gnus-topic-alist gnus-topic-active-alist)
|
|
|
498 (gnus-group-list-mode (cons 5 t)))
|
|
|
499 (gnus-topic-remove-topic
|
|
100
|
500 (or insert (not (gnus-topic-visible-p))) nil nil 9)
|
|
|
501 (gnus-topic-enter-dribble)))))))
|
|
98
|
502
|
|
108
|
503 (defun gnus-topic-insert-topic-line (name visiblep shownp level entries
|
|
98
|
504 &optional unread)
|
|
|
505 (let* ((visible (if visiblep "" "..."))
|
|
|
506 (indentation (make-string (* gnus-topic-indent-level level) ? ))
|
|
|
507 (total-number-of-articles unread)
|
|
|
508 (number-of-groups (length entries))
|
|
|
509 (active-topic (eq gnus-topic-alist gnus-topic-active-alist)))
|
|
|
510 (beginning-of-line)
|
|
|
511 ;; Insert the text.
|
|
108
|
512 (gnus-add-text-properties
|
|
98
|
513 (point)
|
|
|
514 (prog1 (1+ (point))
|
|
|
515 (eval gnus-topic-line-format-spec)
|
|
|
516 (gnus-topic-remove-excess-properties)1)
|
|
|
517 (list 'gnus-topic (intern name)
|
|
|
518 'gnus-topic-level level
|
|
|
519 'gnus-topic-unread unread
|
|
|
520 'gnus-active active-topic
|
|
|
521 'gnus-topic-visible visiblep))))
|
|
|
522
|
|
|
523 (defun gnus-topic-update-topics-containing-group (group)
|
|
|
524 "Update all topics that have GROUP as a member."
|
|
|
525 (when (and (eq major-mode 'gnus-group-mode)
|
|
|
526 gnus-topic-mode)
|
|
|
527 (save-excursion
|
|
|
528 (let ((alist gnus-topic-alist))
|
|
|
529 ;; This is probably not entirely correct. If a topic
|
|
|
530 ;; isn't shown, then it's not updated. But the updating
|
|
|
531 ;; should be performed in any case, since the topic's
|
|
|
532 ;; parent should be updated. Pfft.
|
|
|
533 (while alist
|
|
|
534 (when (and (member group (cdar alist))
|
|
|
535 (gnus-topic-goto-topic (caar alist)))
|
|
|
536 (gnus-topic-update-topic-line (caar alist)))
|
|
|
537 (pop alist))))))
|
|
|
538
|
|
70
|
539 (defun gnus-topic-update-topic ()
|
|
|
540 "Update all parent topics to the current group."
|
|
|
541 (when (and (eq major-mode 'gnus-group-mode)
|
|
|
542 gnus-topic-mode)
|
|
|
543 (let ((group (gnus-group-group-name))
|
|
140
|
544 (m (point-marker))
|
|
70
|
545 (buffer-read-only nil))
|
|
108
|
546 (when (and group
|
|
98
|
547 (gnus-get-info group)
|
|
|
548 (gnus-topic-goto-topic (gnus-current-topic)))
|
|
70
|
549 (gnus-topic-update-topic-line (gnus-group-topic-name))
|
|
140
|
550 (goto-char m)
|
|
|
551 (set-marker m nil)
|
|
70
|
552 (gnus-group-position-point)))))
|
|
0
|
553
|
|
98
|
554 (defun gnus-topic-goto-missing-group (group)
|
|
70
|
555 "Place point where GROUP is supposed to be inserted."
|
|
|
556 (let* ((topic (gnus-group-topic group))
|
|
|
557 (groups (cdr (assoc topic gnus-topic-alist)))
|
|
|
558 (g (cdr (member group groups)))
|
|
|
559 (unfound t))
|
|
98
|
560 ;; Try to jump to a visible group.
|
|
|
561 (while (and g (not (gnus-group-goto-group (car g) t)))
|
|
|
562 (pop g))
|
|
|
563 ;; It wasn't visible, so we try to see where to insert it.
|
|
|
564 (when (not g)
|
|
70
|
565 (setq g (cdr (member group (reverse groups))))
|
|
|
566 (while (and g unfound)
|
|
98
|
567 (when (gnus-group-goto-group (pop g) t)
|
|
70
|
568 (forward-line 1)
|
|
|
569 (setq unfound nil)))
|
|
118
|
570 (when (and unfound
|
|
120
|
571 topic
|
|
118
|
572 (not (gnus-topic-goto-missing-topic topic)))
|
|
|
573 (gnus-topic-insert-topic-line
|
|
|
574 topic t t (car (gnus-topic-find-topology topic)) nil 0)))))
|
|
|
575
|
|
|
576 (defun gnus-topic-goto-missing-topic (topic)
|
|
|
577 (if (gnus-topic-goto-topic topic)
|
|
|
578 (forward-line 1)
|
|
|
579 ;; Topic not displayed.
|
|
|
580 (let* ((top (gnus-topic-find-topology
|
|
|
581 (gnus-topic-parent-topic topic)))
|
|
|
582 (tp (reverse (cddr top))))
|
|
|
583 (while (not (equal (caaar tp) topic))
|
|
|
584 (setq tp (cdr tp)))
|
|
|
585 (pop tp)
|
|
|
586 (while (and tp
|
|
|
587 (not (gnus-topic-goto-topic (caaar tp))))
|
|
|
588 (pop tp))
|
|
|
589 (if tp
|
|
|
590 (gnus-topic-forward-topic 1)
|
|
|
591 (gnus-topic-goto-missing-topic (caadr top))))
|
|
|
592 nil))
|
|
0
|
593
|
|
70
|
594 (defun gnus-topic-update-topic-line (topic-name &optional reads)
|
|
|
595 (let* ((top (gnus-topic-find-topology topic-name))
|
|
|
596 (type (cadr top))
|
|
|
597 (children (cddr top))
|
|
108
|
598 (entries (gnus-topic-find-groups
|
|
70
|
599 (car type) (car gnus-group-list-mode)
|
|
|
600 (cdr gnus-group-list-mode)))
|
|
|
601 (parent (gnus-topic-parent-topic topic-name))
|
|
|
602 (all-entries entries)
|
|
|
603 (unread 0)
|
|
|
604 old-unread entry)
|
|
|
605 (when (gnus-topic-goto-topic (car type))
|
|
|
606 ;; Tally all the groups that belong in this topic.
|
|
|
607 (if reads
|
|
|
608 (setq unread (- (gnus-group-topic-unread) reads))
|
|
|
609 (while children
|
|
|
610 (incf unread (gnus-topic-unread (caar (pop children)))))
|
|
|
611 (while (setq entry (pop entries))
|
|
|
612 (when (numberp (car entry))
|
|
|
613 (incf unread (car entry)))))
|
|
|
614 (setq old-unread (gnus-group-topic-unread))
|
|
|
615 ;; Insert the topic line.
|
|
108
|
616 (gnus-topic-insert-topic-line
|
|
70
|
617 (car type) (gnus-topic-visible-p)
|
|
|
618 (not (eq (nth 2 type) 'hidden))
|
|
|
619 (gnus-group-topic-level) all-entries unread)
|
|
|
620 (gnus-delete-line))
|
|
|
621 (when parent
|
|
|
622 (forward-line -1)
|
|
|
623 (gnus-topic-update-topic-line
|
|
|
624 parent (- old-unread (gnus-group-topic-unread))))
|
|
|
625 unread))
|
|
0
|
626
|
|
98
|
627 (defun gnus-topic-group-indentation ()
|
|
108
|
628 (make-string
|
|
98
|
629 (* gnus-topic-indent-level
|
|
|
630 (or (save-excursion
|
|
|
631 (forward-line -1)
|
|
|
632 (gnus-topic-goto-topic (gnus-current-topic))
|
|
|
633 (gnus-group-topic-level))
|
|
|
634 0))
|
|
|
635 ? ))
|
|
|
636
|
|
|
637 ;;; Initialization
|
|
|
638
|
|
|
639 (gnus-add-shutdown 'gnus-topic-close 'gnus)
|
|
|
640
|
|
|
641 (defun gnus-topic-close ()
|
|
|
642 (setq gnus-topic-active-topology nil
|
|
|
643 gnus-topic-active-alist nil
|
|
|
644 gnus-topic-killed-topics nil
|
|
|
645 gnus-topology-checked-p nil))
|
|
|
646
|
|
|
647 (defun gnus-topic-check-topology ()
|
|
|
648 ;; The first time we set the topology to whatever we have
|
|
|
649 ;; gotten here, which can be rather random.
|
|
|
650 (unless gnus-topic-alist
|
|
|
651 (gnus-topic-init-alist))
|
|
|
652
|
|
|
653 (setq gnus-topology-checked-p t)
|
|
|
654 ;; Go through the topic alist and make sure that all topics
|
|
|
655 ;; are in the topic topology.
|
|
|
656 (let ((topics (gnus-topic-list))
|
|
|
657 (alist gnus-topic-alist)
|
|
|
658 changed)
|
|
|
659 (while alist
|
|
|
660 (unless (member (caar alist) topics)
|
|
|
661 (nconc gnus-topic-topology
|
|
|
662 (list (list (list (caar alist) 'visible))))
|
|
|
663 (setq changed t))
|
|
|
664 (setq alist (cdr alist)))
|
|
|
665 (when changed
|
|
|
666 (gnus-topic-enter-dribble))
|
|
|
667 ;; Conversely, go through the topology and make sure that all
|
|
|
668 ;; topologies have alists.
|
|
|
669 (while topics
|
|
|
670 (unless (assoc (car topics) gnus-topic-alist)
|
|
|
671 (push (list (car topics)) gnus-topic-alist))
|
|
|
672 (pop topics)))
|
|
|
673 ;; Go through all living groups and make sure that
|
|
|
674 ;; they belong to some topic.
|
|
|
675 (let* ((tgroups (apply 'append (mapcar (lambda (entry) (cdr entry))
|
|
|
676 gnus-topic-alist)))
|
|
|
677 (entry (assoc (caar gnus-topic-topology) gnus-topic-alist))
|
|
|
678 (newsrc (cdr gnus-newsrc-alist))
|
|
|
679 group)
|
|
|
680 (while newsrc
|
|
|
681 (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups)
|
|
|
682 (setcdr entry (cons group (cdr entry))))))
|
|
|
683 ;; Go through all topics and make sure they contain only living groups.
|
|
|
684 (let ((alist gnus-topic-alist)
|
|
|
685 topic)
|
|
|
686 (while (setq topic (pop alist))
|
|
|
687 (while (cdr topic)
|
|
|
688 (if (gnus-gethash (cadr topic) gnus-newsrc-hashtb)
|
|
|
689 (setq topic (cdr topic))
|
|
|
690 (setcdr topic (cddr topic)))))))
|
|
|
691
|
|
|
692 (defun gnus-topic-init-alist ()
|
|
|
693 "Initialize the topic structures."
|
|
|
694 (setq gnus-topic-topology
|
|
|
695 (cons (list "Gnus" 'visible)
|
|
|
696 (mapcar (lambda (topic)
|
|
|
697 (list (list (car topic) 'visible)))
|
|
|
698 '(("misc")))))
|
|
|
699 (setq gnus-topic-alist
|
|
|
700 (list (cons "misc"
|
|
|
701 (mapcar (lambda (info) (gnus-info-group info))
|
|
|
702 (cdr gnus-newsrc-alist)))
|
|
|
703 (list "Gnus")))
|
|
|
704 (gnus-topic-enter-dribble))
|
|
|
705
|
|
|
706 ;;; Maintenance
|
|
|
707
|
|
|
708 (defun gnus-topic-clean-alist ()
|
|
|
709 "Remove bogus groups from the topic alist."
|
|
|
710 (let ((topic-alist gnus-topic-alist)
|
|
|
711 result topic)
|
|
|
712 (unless gnus-killed-hashtb
|
|
|
713 (gnus-make-hashtable-from-killed))
|
|
|
714 (while (setq topic (pop topic-alist))
|
|
|
715 (let ((topic-name (pop topic))
|
|
|
716 group filtered-topic)
|
|
|
717 (while (setq group (pop topic))
|
|
|
718 (when (and (or (gnus-gethash group gnus-active-hashtb)
|
|
|
719 (gnus-info-method (gnus-get-info group)))
|
|
|
720 (not (gnus-gethash group gnus-killed-hashtb)))
|
|
|
721 (push group filtered-topic)))
|
|
|
722 (push (cons topic-name (nreverse filtered-topic)) result)))
|
|
|
723 (setq gnus-topic-alist (nreverse result))))
|
|
|
724
|
|
|
725 (defun gnus-topic-change-level (group level oldlevel)
|
|
|
726 "Run when changing levels to enter/remove groups from topics."
|
|
|
727 (save-excursion
|
|
|
728 (set-buffer gnus-group-buffer)
|
|
108
|
729 (when (and gnus-topic-mode
|
|
98
|
730 gnus-topic-alist
|
|
|
731 (not gnus-topic-inhibit-change-level))
|
|
|
732 ;; Remove the group from the topics.
|
|
|
733 (when (and (< oldlevel gnus-level-zombie)
|
|
|
734 (>= level gnus-level-zombie))
|
|
|
735 (let (alist)
|
|
|
736 (forward-line -1)
|
|
|
737 (when (setq alist (assoc (gnus-current-topic) gnus-topic-alist))
|
|
|
738 (setcdr alist (gnus-delete-first group (cdr alist))))))
|
|
|
739 ;; If the group is subscribed we enter it into the topics.
|
|
|
740 (when (and (< level gnus-level-zombie)
|
|
|
741 (>= oldlevel gnus-level-zombie))
|
|
|
742 (let* ((prev (gnus-group-group-name))
|
|
|
743 (gnus-topic-inhibit-change-level t)
|
|
|
744 (gnus-group-indentation
|
|
108
|
745 (make-string
|
|
98
|
746 (* gnus-topic-indent-level
|
|
|
747 (or (save-excursion
|
|
|
748 (gnus-topic-goto-topic (gnus-current-topic))
|
|
|
749 (gnus-group-topic-level))
|
|
|
750 0))
|
|
|
751 ? ))
|
|
|
752 (yanked (list group))
|
|
|
753 alist talist end)
|
|
|
754 ;; Then we enter the yanked groups into the topics they belong
|
|
108
|
755 ;; to.
|
|
98
|
756 (when (setq alist (assoc (save-excursion
|
|
|
757 (forward-line -1)
|
|
|
758 (or
|
|
|
759 (gnus-current-topic)
|
|
|
760 (caar gnus-topic-topology)))
|
|
|
761 gnus-topic-alist))
|
|
|
762 (setq talist alist)
|
|
|
763 (when (stringp yanked)
|
|
|
764 (setq yanked (list yanked)))
|
|
|
765 (if (not prev)
|
|
|
766 (nconc alist yanked)
|
|
|
767 (if (not (cdr alist))
|
|
|
768 (setcdr alist (nconc yanked (cdr alist)))
|
|
|
769 (while (and (not end) (cdr alist))
|
|
|
770 (when (equal (cadr alist) prev)
|
|
|
771 (setcdr alist (nconc yanked (cdr alist)))
|
|
|
772 (setq end t))
|
|
|
773 (setq alist (cdr alist)))
|
|
|
774 (unless end
|
|
|
775 (nconc talist yanked))))))
|
|
|
776 (gnus-topic-update-topic)))))
|
|
|
777
|
|
|
778 (defun gnus-topic-goto-next-group (group props)
|
|
|
779 "Go to group or the next group after group."
|
|
|
780 (if (not group)
|
|
|
781 (if (not (memq 'gnus-topic props))
|
|
|
782 (goto-char (point-max))
|
|
|
783 (gnus-topic-goto-topic (symbol-name (cadr (memq 'gnus-topic props)))))
|
|
|
784 (if (gnus-group-goto-group group)
|
|
|
785 t
|
|
|
786 ;; The group is no longer visible.
|
|
|
787 (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist))
|
|
|
788 (after (cdr (member group (cdr list)))))
|
|
|
789 ;; First try to put point on a group after the current one.
|
|
|
790 (while (and after
|
|
|
791 (not (gnus-group-goto-group (car after))))
|
|
|
792 (setq after (cdr after)))
|
|
|
793 ;; Then try to put point on a group before point.
|
|
|
794 (unless after
|
|
|
795 (setq after (cdr (member group (reverse (cdr list)))))
|
|
108
|
796 (while (and after
|
|
98
|
797 (not (gnus-group-goto-group (car after))))
|
|
|
798 (setq after (cdr after))))
|
|
|
799 ;; Finally, just put point on the topic.
|
|
|
800 (if (not (car list))
|
|
|
801 (goto-char (point-min))
|
|
|
802 (unless after
|
|
|
803 (gnus-topic-goto-topic (car list))
|
|
|
804 (setq after nil)))
|
|
|
805 t))))
|
|
|
806
|
|
|
807 ;;; Topic-active functions
|
|
|
808
|
|
0
|
809 (defun gnus-topic-grok-active (&optional force)
|
|
|
810 "Parse all active groups and create topic structures for them."
|
|
108
|
811 ;; First we make sure that we have really read the active file.
|
|
0
|
812 (when (or force
|
|
|
813 (not gnus-topic-active-alist))
|
|
|
814 (let (groups)
|
|
|
815 ;; Get a list of all groups available.
|
|
|
816 (mapatoms (lambda (g) (when (symbol-value g)
|
|
|
817 (push (symbol-name g) groups)))
|
|
|
818 gnus-active-hashtb)
|
|
|
819 (setq groups (sort groups 'string<))
|
|
|
820 ;; Init the variables.
|
|
|
821 (setq gnus-topic-active-topology (list (list "" 'visible)))
|
|
|
822 (setq gnus-topic-active-alist nil)
|
|
|
823 ;; Descend the top-level hierarchy.
|
|
|
824 (gnus-topic-grok-active-1 gnus-topic-active-topology groups)
|
|
|
825 ;; Set the top-level topic names to something nice.
|
|
|
826 (setcar (car gnus-topic-active-topology) "Gnus active")
|
|
|
827 (setcar (car gnus-topic-active-alist) "Gnus active"))))
|
|
|
828
|
|
|
829 (defun gnus-topic-grok-active-1 (topology groups)
|
|
|
830 (let* ((name (caar topology))
|
|
|
831 (prefix (concat "^" (regexp-quote name)))
|
|
|
832 tgroups ntopology group)
|
|
|
833 (while (and groups
|
|
|
834 (string-match prefix (setq group (car groups))))
|
|
|
835 (if (not (string-match "\\." group (match-end 0)))
|
|
|
836 ;; There are no further hierarchies here, so we just
|
|
|
837 ;; enter this group into the list belonging to this
|
|
|
838 ;; topic.
|
|
|
839 (push (pop groups) tgroups)
|
|
|
840 ;; New sub-hierarchy, so we add it to the topology.
|
|
108
|
841 (nconc topology (list (setq ntopology
|
|
|
842 (list (list (substring
|
|
0
|
843 group 0 (match-end 0))
|
|
|
844 'invisible)))))
|
|
|
845 ;; Descend the hierarchy.
|
|
|
846 (setq groups (gnus-topic-grok-active-1 ntopology groups))))
|
|
|
847 ;; We remove the trailing "." from the topic name.
|
|
|
848 (setq name
|
|
|
849 (if (string-match "\\.$" name)
|
|
|
850 (substring name 0 (match-beginning 0))
|
|
|
851 name))
|
|
|
852 ;; Add this topic and its groups to the topic alist.
|
|
|
853 (push (cons name (nreverse tgroups)) gnus-topic-active-alist)
|
|
|
854 (setcar (car topology) name)
|
|
|
855 ;; We return the rest of the groups that didn't belong
|
|
|
856 ;; to this topic.
|
|
|
857 groups))
|
|
|
858
|
|
|
859 ;;; Topic mode, commands and keymap.
|
|
|
860
|
|
|
861 (defvar gnus-topic-mode-map nil)
|
|
|
862 (defvar gnus-group-topic-map nil)
|
|
|
863
|
|
|
864 (unless gnus-topic-mode-map
|
|
|
865 (setq gnus-topic-mode-map (make-sparse-keymap))
|
|
|
866
|
|
|
867 ;; Override certain group mode keys.
|
|
98
|
868 (gnus-define-keys gnus-topic-mode-map
|
|
|
869 "=" gnus-topic-select-group
|
|
|
870 "\r" gnus-topic-select-group
|
|
|
871 " " gnus-topic-read-group
|
|
|
872 "\C-k" gnus-topic-kill-group
|
|
|
873 "\C-y" gnus-topic-yank-group
|
|
|
874 "\M-g" gnus-topic-get-new-news-this-topic
|
|
|
875 "AT" gnus-topic-list-active
|
|
|
876 "Gp" gnus-topic-edit-parameters
|
|
|
877 "#" gnus-topic-mark-topic
|
|
|
878 "\M-#" gnus-topic-unmark-topic
|
|
|
879 gnus-mouse-2 gnus-mouse-pick-topic)
|
|
0
|
880
|
|
|
881 ;; Define a new submap.
|
|
98
|
882 (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map)
|
|
|
883 "#" gnus-topic-mark-topic
|
|
|
884 "\M-#" gnus-topic-unmark-topic
|
|
|
885 "n" gnus-topic-create-topic
|
|
|
886 "m" gnus-topic-move-group
|
|
|
887 "D" gnus-topic-remove-group
|
|
|
888 "c" gnus-topic-copy-group
|
|
|
889 "h" gnus-topic-hide-topic
|
|
|
890 "s" gnus-topic-show-topic
|
|
|
891 "M" gnus-topic-move-matching
|
|
|
892 "C" gnus-topic-copy-matching
|
|
|
893 "\C-i" gnus-topic-indent
|
|
|
894 [tab] gnus-topic-indent
|
|
|
895 "r" gnus-topic-rename
|
|
151
|
896 "\177" gnus-topic-delete
|
|
|
897 "h" gnus-topic-toggle-display-empty-topics)
|
|
98
|
898
|
|
|
899 (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map)
|
|
|
900 "s" gnus-topic-sort-groups
|
|
|
901 "a" gnus-topic-sort-groups-by-alphabet
|
|
|
902 "u" gnus-topic-sort-groups-by-unread
|
|
|
903 "l" gnus-topic-sort-groups-by-level
|
|
|
904 "v" gnus-topic-sort-groups-by-score
|
|
|
905 "r" gnus-topic-sort-groups-by-rank
|
|
|
906 "m" gnus-topic-sort-groups-by-method))
|
|
0
|
907
|
|
|
908 (defun gnus-topic-make-menu-bar ()
|
|
|
909 (unless (boundp 'gnus-topic-menu)
|
|
|
910 (easy-menu-define
|
|
|
911 gnus-topic-menu gnus-topic-mode-map ""
|
|
|
912 '("Topics"
|
|
|
913 ["Toggle topics" gnus-topic-mode t]
|
|
|
914 ("Groups"
|
|
|
915 ["Copy" gnus-topic-copy-group t]
|
|
|
916 ["Move" gnus-topic-move-group t]
|
|
|
917 ["Remove" gnus-topic-remove-group t]
|
|
|
918 ["Copy matching" gnus-topic-copy-matching t]
|
|
|
919 ["Move matching" gnus-topic-move-matching t])
|
|
|
920 ("Topics"
|
|
|
921 ["Show" gnus-topic-show-topic t]
|
|
|
922 ["Hide" gnus-topic-hide-topic t]
|
|
|
923 ["Delete" gnus-topic-delete t]
|
|
|
924 ["Rename" gnus-topic-rename t]
|
|
|
925 ["Create" gnus-topic-create-topic t]
|
|
|
926 ["Mark" gnus-topic-mark-topic t]
|
|
151
|
927 ["Indent" gnus-topic-indent t]
|
|
|
928 ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t])
|
|
0
|
929 ["List active" gnus-topic-list-active t]))))
|
|
|
930
|
|
|
931 (defun gnus-topic-mode (&optional arg redisplay)
|
|
|
932 "Minor mode for topicsifying Gnus group buffers."
|
|
|
933 (interactive (list current-prefix-arg t))
|
|
|
934 (when (eq major-mode 'gnus-group-mode)
|
|
|
935 (make-local-variable 'gnus-topic-mode)
|
|
108
|
936 (setq gnus-topic-mode
|
|
0
|
937 (if (null arg) (not gnus-topic-mode)
|
|
|
938 (> (prefix-numeric-value arg) 0)))
|
|
|
939 ;; Infest Gnus with topics.
|
|
155
|
940 (if (not gnus-topic-mode)
|
|
|
941 (setq gnus-goto-missing-group-function nil)
|
|
98
|
942 (when (gnus-visual-p 'topic-menu 'menu)
|
|
0
|
943 (gnus-topic-make-menu-bar))
|
|
108
|
944 (setq gnus-topic-line-format-spec
|
|
|
945 (gnus-parse-format gnus-topic-line-format
|
|
0
|
946 gnus-topic-line-format-alist t))
|
|
|
947 (unless (assq 'gnus-topic-mode minor-mode-alist)
|
|
|
948 (push '(gnus-topic-mode " Topic") minor-mode-alist))
|
|
|
949 (unless (assq 'gnus-topic-mode minor-mode-map-alist)
|
|
|
950 (push (cons 'gnus-topic-mode gnus-topic-mode-map)
|
|
|
951 minor-mode-map-alist))
|
|
|
952 (add-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic)
|
|
|
953 (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic)
|
|
98
|
954 (set (make-local-variable 'gnus-group-prepare-function)
|
|
|
955 'gnus-group-prepare-topics)
|
|
|
956 (set (make-local-variable 'gnus-group-get-parameter-function)
|
|
|
957 'gnus-group-topic-parameters)
|
|
|
958 (set (make-local-variable 'gnus-group-goto-next-group-function)
|
|
|
959 'gnus-topic-goto-next-group)
|
|
|
960 (set (make-local-variable 'gnus-group-indentation-function)
|
|
|
961 'gnus-topic-group-indentation)
|
|
|
962 (set (make-local-variable 'gnus-group-update-group-function)
|
|
|
963 'gnus-topic-update-topics-containing-group)
|
|
|
964 (set (make-local-variable 'gnus-group-sort-alist-function)
|
|
|
965 'gnus-group-sort-topic)
|
|
0
|
966 (setq gnus-group-change-level-function 'gnus-topic-change-level)
|
|
|
967 (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group)
|
|
98
|
968 (make-local-hook 'gnus-check-bogus-groups-hook)
|
|
2
|
969 (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist)
|
|
0
|
970 (setq gnus-topology-checked-p nil)
|
|
|
971 ;; We check the topology.
|
|
|
972 (when gnus-newsrc-alist
|
|
|
973 (gnus-topic-check-topology))
|
|
|
974 (run-hooks 'gnus-topic-mode-hook))
|
|
|
975 ;; Remove topic infestation.
|
|
|
976 (unless gnus-topic-mode
|
|
|
977 (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic)
|
|
108
|
978 (remove-hook 'gnus-group-change-level-function
|
|
0
|
979 'gnus-topic-change-level)
|
|
2
|
980 (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist)
|
|
98
|
981 (setq gnus-group-prepare-function 'gnus-group-prepare-flat)
|
|
|
982 (setq gnus-group-sort-alist-function 'gnus-group-sort-flat))
|
|
0
|
983 (when redisplay
|
|
|
984 (gnus-group-list-groups))))
|
|
108
|
985
|
|
0
|
986 (defun gnus-topic-select-group (&optional all)
|
|
|
987 "Select this newsgroup.
|
|
|
988 No article is selected automatically.
|
|
|
989 If ALL is non-nil, already read articles become readable.
|
|
2
|
990 If ALL is a number, fetch this number of articles.
|
|
|
991
|
|
|
992 If performed over a topic line, toggle folding the topic."
|
|
0
|
993 (interactive "P")
|
|
|
994 (if (gnus-group-topic-p)
|
|
108
|
995 (let ((gnus-group-list-mode
|
|
0
|
996 (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode)))
|
|
|
997 (gnus-topic-fold all))
|
|
|
998 (gnus-group-select-group all)))
|
|
|
999
|
|
|
1000 (defun gnus-mouse-pick-topic (e)
|
|
|
1001 "Select the group or topic under the mouse pointer."
|
|
|
1002 (interactive "e")
|
|
|
1003 (mouse-set-point e)
|
|
|
1004 (gnus-topic-read-group nil))
|
|
|
1005
|
|
|
1006 (defun gnus-topic-read-group (&optional all no-article group)
|
|
|
1007 "Read news in this newsgroup.
|
|
|
1008 If the prefix argument ALL is non-nil, already read articles become
|
|
|
1009 readable. IF ALL is a number, fetch this number of articles. If the
|
|
|
1010 optional argument NO-ARTICLE is non-nil, no article will be
|
|
|
1011 auto-selected upon group entry. If GROUP is non-nil, fetch that
|
|
2
|
1012 group.
|
|
|
1013
|
|
|
1014 If performed over a topic line, toggle folding the topic."
|
|
0
|
1015 (interactive "P")
|
|
|
1016 (if (gnus-group-topic-p)
|
|
108
|
1017 (let ((gnus-group-list-mode
|
|
0
|
1018 (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode)))
|
|
|
1019 (gnus-topic-fold all))
|
|
|
1020 (gnus-group-read-group all no-article group)))
|
|
|
1021
|
|
|
1022 (defun gnus-topic-create-topic (topic parent &optional previous full-topic)
|
|
144
|
1023 "Create a new TOPIC under PARENT.
|
|
|
1024 When used interactively, PARENT will be the topic under point."
|
|
108
|
1025 (interactive
|
|
0
|
1026 (list
|
|
|
1027 (read-string "New topic: ")
|
|
98
|
1028 (gnus-current-topic)))
|
|
0
|
1029 ;; Check whether this topic already exists.
|
|
|
1030 (when (gnus-topic-find-topology topic)
|
|
98
|
1031 (error "Topic already exists"))
|
|
0
|
1032 (unless parent
|
|
|
1033 (setq parent (caar gnus-topic-topology)))
|
|
|
1034 (let ((top (cdr (gnus-topic-find-topology parent)))
|
|
|
1035 (full-topic (or full-topic `((,topic visible)))))
|
|
|
1036 (unless top
|
|
|
1037 (error "No such parent topic: %s" parent))
|
|
|
1038 (if previous
|
|
|
1039 (progn
|
|
|
1040 (while (and (cdr top)
|
|
|
1041 (not (equal (caaadr top) previous)))
|
|
|
1042 (setq top (cdr top)))
|
|
|
1043 (setcdr top (cons full-topic (cdr top))))
|
|
|
1044 (nconc top (list full-topic)))
|
|
|
1045 (unless (assoc topic gnus-topic-alist)
|
|
|
1046 (push (list topic) gnus-topic-alist)))
|
|
|
1047 (gnus-topic-enter-dribble)
|
|
|
1048 (gnus-group-list-groups)
|
|
|
1049 (gnus-topic-goto-topic topic))
|
|
|
1050
|
|
|
1051 (defun gnus-topic-move-group (n topic &optional copyp)
|
|
|
1052 "Move the next N groups to TOPIC.
|
|
|
1053 If COPYP, copy the groups instead."
|
|
|
1054 (interactive
|
|
|
1055 (list current-prefix-arg
|
|
|
1056 (completing-read "Move to topic: " gnus-topic-alist nil t)))
|
|
|
1057 (let ((groups (gnus-group-process-prefix n))
|
|
|
1058 (topicl (assoc topic gnus-topic-alist))
|
|
98
|
1059 (start-group (progn (forward-line 1) (gnus-group-group-name)))
|
|
|
1060 (start-topic (gnus-group-topic-name))
|
|
0
|
1061 entry)
|
|
108
|
1062 (mapcar
|
|
98
|
1063 (lambda (g)
|
|
|
1064 (gnus-group-remove-mark g)
|
|
|
1065 (when (and
|
|
|
1066 (setq entry (assoc (gnus-current-topic) gnus-topic-alist))
|
|
|
1067 (not copyp))
|
|
|
1068 (setcdr entry (gnus-delete-first g (cdr entry))))
|
|
|
1069 (nconc topicl (list g)))
|
|
|
1070 groups)
|
|
|
1071 (gnus-topic-enter-dribble)
|
|
|
1072 (if start-group
|
|
|
1073 (gnus-group-goto-group start-group)
|
|
|
1074 (gnus-topic-goto-topic start-topic))
|
|
|
1075 (gnus-group-list-groups)))
|
|
0
|
1076
|
|
98
|
1077 (defun gnus-topic-remove-group (&optional arg)
|
|
0
|
1078 "Remove the current group from the topic."
|
|
98
|
1079 (interactive "P")
|
|
108
|
1080 (gnus-group-iterate arg
|
|
98
|
1081 (lambda (group)
|
|
|
1082 (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist))
|
|
|
1083 (buffer-read-only nil))
|
|
|
1084 (when (and topicl group)
|
|
|
1085 (gnus-delete-line)
|
|
|
1086 (gnus-delete-first group topicl))
|
|
|
1087 (gnus-topic-update-topic)
|
|
|
1088 (gnus-group-position-point)))))
|
|
0
|
1089
|
|
|
1090 (defun gnus-topic-copy-group (n topic)
|
|
|
1091 "Copy the current group to a topic."
|
|
|
1092 (interactive
|
|
|
1093 (list current-prefix-arg
|
|
|
1094 (completing-read "Copy to topic: " gnus-topic-alist nil t)))
|
|
|
1095 (gnus-topic-move-group n topic t))
|
|
|
1096
|
|
|
1097 (defun gnus-topic-kill-group (&optional n discard)
|
|
|
1098 "Kill the next N groups."
|
|
|
1099 (interactive "P")
|
|
|
1100 (if (gnus-group-topic-p)
|
|
|
1101 (let ((topic (gnus-group-topic-name)))
|
|
108
|
1102 (push (cons
|
|
98
|
1103 (gnus-topic-find-topology topic)
|
|
|
1104 (assoc topic gnus-topic-alist))
|
|
|
1105 gnus-topic-killed-topics)
|
|
0
|
1106 (gnus-topic-remove-topic nil t)
|
|
98
|
1107 (gnus-topic-find-topology topic nil nil gnus-topic-topology)
|
|
|
1108 (gnus-topic-enter-dribble))
|
|
0
|
1109 (gnus-group-kill-group n discard)
|
|
|
1110 (gnus-topic-update-topic)))
|
|
108
|
1111
|
|
0
|
1112 (defun gnus-topic-yank-group (&optional arg)
|
|
|
1113 "Yank the last topic."
|
|
|
1114 (interactive "p")
|
|
|
1115 (if gnus-topic-killed-topics
|
|
108
|
1116 (let* ((previous
|
|
98
|
1117 (or (gnus-group-topic-name)
|
|
|
1118 (gnus-topic-next-topic (gnus-current-topic))))
|
|
|
1119 (data (pop gnus-topic-killed-topics))
|
|
|
1120 (alist (cdr data))
|
|
|
1121 (item (cdar data)))
|
|
|
1122 (push alist gnus-topic-alist)
|
|
0
|
1123 (gnus-topic-create-topic
|
|
|
1124 (caar item) (gnus-topic-parent-topic previous) previous
|
|
|
1125 item)
|
|
98
|
1126 (gnus-topic-enter-dribble)
|
|
0
|
1127 (gnus-topic-goto-topic (caar item)))
|
|
|
1128 (let* ((prev (gnus-group-group-name))
|
|
|
1129 (gnus-topic-inhibit-change-level t)
|
|
|
1130 (gnus-group-indentation
|
|
108
|
1131 (make-string
|
|
0
|
1132 (* gnus-topic-indent-level
|
|
|
1133 (or (save-excursion
|
|
98
|
1134 (gnus-topic-goto-topic (gnus-current-topic))
|
|
|
1135 (gnus-group-topic-level))
|
|
|
1136 0))
|
|
|
1137 ? ))
|
|
0
|
1138 yanked alist)
|
|
|
1139 ;; We first yank the groups the normal way...
|
|
|
1140 (setq yanked (gnus-group-yank-group arg))
|
|
|
1141 ;; Then we enter the yanked groups into the topics they belong
|
|
108
|
1142 ;; to.
|
|
0
|
1143 (setq alist (assoc (save-excursion
|
|
|
1144 (forward-line -1)
|
|
98
|
1145 (gnus-current-topic))
|
|
0
|
1146 gnus-topic-alist))
|
|
|
1147 (when (stringp yanked)
|
|
|
1148 (setq yanked (list yanked)))
|
|
|
1149 (if (not prev)
|
|
|
1150 (nconc alist yanked)
|
|
|
1151 (if (not (cdr alist))
|
|
|
1152 (setcdr alist (nconc yanked (cdr alist)))
|
|
|
1153 (while (cdr alist)
|
|
|
1154 (when (equal (cadr alist) prev)
|
|
|
1155 (setcdr alist (nconc yanked (cdr alist)))
|
|
|
1156 (setq alist nil))
|
|
|
1157 (setq alist (cdr alist))))))
|
|
|
1158 (gnus-topic-update-topic)))
|
|
|
1159
|
|
|
1160 (defun gnus-topic-hide-topic ()
|
|
2
|
1161 "Hide the current topic."
|
|
0
|
1162 (interactive)
|
|
98
|
1163 (when (gnus-current-topic)
|
|
|
1164 (gnus-topic-goto-topic (gnus-current-topic))
|
|
0
|
1165 (gnus-topic-remove-topic nil nil 'hidden)))
|
|
|
1166
|
|
|
1167 (defun gnus-topic-show-topic ()
|
|
|
1168 "Show the hidden topic."
|
|
|
1169 (interactive)
|
|
|
1170 (when (gnus-group-topic-p)
|
|
|
1171 (gnus-topic-remove-topic t nil 'shown)))
|
|
|
1172
|
|
|
1173 (defun gnus-topic-mark-topic (topic &optional unmark)
|
|
|
1174 "Mark all groups in the topic with the process mark."
|
|
98
|
1175 (interactive (list (gnus-group-topic-name)))
|
|
|
1176 (if (not topic)
|
|
|
1177 (call-interactively 'gnus-group-mark-group)
|
|
|
1178 (save-excursion
|
|
|
1179 (let ((groups (gnus-topic-find-groups topic 9 t)))
|
|
|
1180 (while groups
|
|
|
1181 (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark)
|
|
|
1182 (gnus-info-group (nth 2 (pop groups)))))))))
|
|
0
|
1183
|
|
|
1184 (defun gnus-topic-unmark-topic (topic &optional unmark)
|
|
|
1185 "Remove the process mark from all groups in the topic."
|
|
98
|
1186 (interactive (list (gnus-group-topic-name)))
|
|
|
1187 (if (not topic)
|
|
|
1188 (call-interactively 'gnus-group-unmark-group)
|
|
|
1189 (gnus-topic-mark-topic topic t)))
|
|
0
|
1190
|
|
|
1191 (defun gnus-topic-get-new-news-this-topic (&optional n)
|
|
|
1192 "Check for new news in the current topic."
|
|
|
1193 (interactive "P")
|
|
|
1194 (if (not (gnus-group-topic-p))
|
|
|
1195 (gnus-group-get-new-news-this-group n)
|
|
|
1196 (gnus-topic-mark-topic (gnus-group-topic-name))
|
|
|
1197 (gnus-group-get-new-news-this-group)))
|
|
|
1198
|
|
|
1199 (defun gnus-topic-move-matching (regexp topic &optional copyp)
|
|
|
1200 "Move all groups that match REGEXP to some topic."
|
|
|
1201 (interactive
|
|
|
1202 (let (topic)
|
|
|
1203 (nreverse
|
|
|
1204 (list
|
|
|
1205 (setq topic (completing-read "Move to topic: " gnus-topic-alist nil t))
|
|
|
1206 (read-string (format "Move to %s (regexp): " topic))))))
|
|
|
1207 (gnus-group-mark-regexp regexp)
|
|
|
1208 (gnus-topic-move-group nil topic copyp))
|
|
|
1209
|
|
|
1210 (defun gnus-topic-copy-matching (regexp topic &optional copyp)
|
|
|
1211 "Copy all groups that match REGEXP to some topic."
|
|
|
1212 (interactive
|
|
|
1213 (let (topic)
|
|
|
1214 (nreverse
|
|
|
1215 (list
|
|
|
1216 (setq topic (completing-read "Copy to topic: " gnus-topic-alist nil t))
|
|
|
1217 (read-string (format "Copy to %s (regexp): " topic))))))
|
|
|
1218 (gnus-topic-move-matching regexp topic t))
|
|
|
1219
|
|
|
1220 (defun gnus-topic-delete (topic)
|
|
|
1221 "Delete a topic."
|
|
|
1222 (interactive (list (gnus-group-topic-name)))
|
|
|
1223 (unless topic
|
|
|
1224 (error "No topic to be deleted"))
|
|
|
1225 (let ((entry (assoc topic gnus-topic-alist))
|
|
|
1226 (buffer-read-only nil))
|
|
|
1227 (when (cdr entry)
|
|
|
1228 (error "Topic not empty"))
|
|
|
1229 ;; Delete if visible.
|
|
|
1230 (when (gnus-topic-goto-topic topic)
|
|
|
1231 (gnus-delete-line))
|
|
|
1232 ;; Remove from alist.
|
|
|
1233 (setq gnus-topic-alist (delq entry gnus-topic-alist))
|
|
|
1234 ;; Remove from topology.
|
|
|
1235 (gnus-topic-find-topology topic nil nil 'delete)))
|
|
|
1236
|
|
|
1237 (defun gnus-topic-rename (old-name new-name)
|
|
|
1238 "Rename a topic."
|
|
|
1239 (interactive
|
|
98
|
1240 (let ((topic (gnus-current-topic)))
|
|
0
|
1241 (list topic
|
|
|
1242 (read-string (format "Rename %s to: " topic)))))
|
|
|
1243 (let ((top (gnus-topic-find-topology old-name))
|
|
|
1244 (entry (assoc old-name gnus-topic-alist)))
|
|
|
1245 (when top
|
|
|
1246 (setcar (cadr top) new-name))
|
|
108
|
1247 (when entry
|
|
0
|
1248 (setcar entry new-name))
|
|
2
|
1249 (forward-line -1)
|
|
98
|
1250 (gnus-dribble-touch)
|
|
0
|
1251 (gnus-group-list-groups)))
|
|
|
1252
|
|
|
1253 (defun gnus-topic-indent (&optional unindent)
|
|
|
1254 "Indent a topic -- make it a sub-topic of the previous topic.
|
|
|
1255 If UNINDENT, remove an indentation."
|
|
|
1256 (interactive "P")
|
|
|
1257 (if unindent
|
|
|
1258 (gnus-topic-unindent)
|
|
98
|
1259 (let* ((topic (gnus-current-topic))
|
|
|
1260 (parent (gnus-topic-previous-topic topic))
|
|
|
1261 (buffer-read-only nil))
|
|
0
|
1262 (unless parent
|
|
|
1263 (error "Nothing to indent %s into" topic))
|
|
|
1264 (when topic
|
|
|
1265 (gnus-topic-goto-topic topic)
|
|
|
1266 (gnus-topic-kill-group)
|
|
98
|
1267 (push (cdar gnus-topic-killed-topics) gnus-topic-alist)
|
|
0
|
1268 (gnus-topic-create-topic
|
|
98
|
1269 topic parent nil (cdaar gnus-topic-killed-topics))
|
|
|
1270 (pop gnus-topic-killed-topics)
|
|
0
|
1271 (or (gnus-topic-goto-topic topic)
|
|
|
1272 (gnus-topic-goto-topic parent))))))
|
|
|
1273
|
|
|
1274 (defun gnus-topic-unindent ()
|
|
|
1275 "Unindent a topic."
|
|
|
1276 (interactive)
|
|
98
|
1277 (let* ((topic (gnus-current-topic))
|
|
0
|
1278 (parent (gnus-topic-parent-topic topic))
|
|
|
1279 (grandparent (gnus-topic-parent-topic parent)))
|
|
|
1280 (unless grandparent
|
|
|
1281 (error "Nothing to indent %s into" topic))
|
|
|
1282 (when topic
|
|
|
1283 (gnus-topic-goto-topic topic)
|
|
|
1284 (gnus-topic-kill-group)
|
|
98
|
1285 (push (cdar gnus-topic-killed-topics) gnus-topic-alist)
|
|
0
|
1286 (gnus-topic-create-topic
|
|
|
1287 topic grandparent (gnus-topic-next-topic parent)
|
|
98
|
1288 (cdaar gnus-topic-killed-topics))
|
|
|
1289 (pop gnus-topic-killed-topics)
|
|
0
|
1290 (gnus-topic-goto-topic topic))))
|
|
|
1291
|
|
|
1292 (defun gnus-topic-list-active (&optional force)
|
|
|
1293 "List all groups that Gnus knows about in a topicsified fashion.
|
|
|
1294 If FORCE, always re-read the active file."
|
|
|
1295 (interactive "P")
|
|
|
1296 (when force
|
|
|
1297 (gnus-get-killed-groups))
|
|
|
1298 (gnus-topic-grok-active force)
|
|
|
1299 (let ((gnus-topic-topology gnus-topic-active-topology)
|
|
|
1300 (gnus-topic-alist gnus-topic-active-alist)
|
|
|
1301 gnus-killed-list gnus-zombie-list)
|
|
|
1302 (gnus-group-list-groups 9 nil 1)))
|
|
|
1303
|
|
151
|
1304 (defun gnus-topic-toggle-display-empty-topics ()
|
|
|
1305 "Show/hide topics that have no unread articles."
|
|
|
1306 (interactive)
|
|
|
1307 (setq gnus-topic-display-empty-topics
|
|
|
1308 (not gnus-topic-display-empty-topics))
|
|
|
1309 (message "%s empty topics"
|
|
|
1310 (if gnus-topic-display-empty-topics
|
|
|
1311 "Showing" "Hiding")))
|
|
|
1312
|
|
98
|
1313 ;;; Topic sorting functions
|
|
|
1314
|
|
|
1315 (defun gnus-topic-edit-parameters (group)
|
|
|
1316 "Edit the group parameters of GROUP.
|
|
|
1317 If performed on a topic, edit the topic parameters instead."
|
|
|
1318 (interactive (list (gnus-group-group-name)))
|
|
|
1319 (if group
|
|
|
1320 (gnus-group-edit-group-parameters group)
|
|
|
1321 (if (not (gnus-group-topic-p))
|
|
|
1322 (error "Nothing to edit on the current line.")
|
|
|
1323 (let ((topic (gnus-group-topic-name)))
|
|
|
1324 (gnus-edit-form
|
|
|
1325 (gnus-topic-parameters topic)
|
|
100
|
1326 (format "Editing the topic parameters for `%s'."
|
|
|
1327 (or group topic))
|
|
98
|
1328 `(lambda (form)
|
|
|
1329 (gnus-topic-set-parameters ,topic form)))))))
|
|
|
1330
|
|
|
1331 (defun gnus-group-sort-topic (func reverse)
|
|
|
1332 "Sort groups in the topics according to FUNC and REVERSE."
|
|
|
1333 (let ((alist gnus-topic-alist))
|
|
|
1334 (while alist
|
|
|
1335 ;; !!!Sometimes nil elements sneak into the alist,
|
|
|
1336 ;; for some reason or other.
|
|
|
1337 (setcar alist (delq nil (car alist)))
|
|
|
1338 (setcar alist (delete "dummy.group" (car alist)))
|
|
|
1339 (gnus-topic-sort-topic (pop alist) func reverse))))
|
|
|
1340
|
|
|
1341 (defun gnus-topic-sort-topic (topic func reverse)
|
|
|
1342 ;; Each topic only lists the name of the group, while
|
|
|
1343 ;; the sort predicates expect group infos as inputs.
|
|
|
1344 ;; So we first transform the group names into infos,
|
|
|
1345 ;; then sort, and then transform back into group names.
|
|
|
1346 (setcdr
|
|
|
1347 topic
|
|
|
1348 (mapcar
|
|
|
1349 (lambda (info) (gnus-info-group info))
|
|
|
1350 (sort
|
|
|
1351 (mapcar
|
|
|
1352 (lambda (group) (gnus-get-info group))
|
|
|
1353 (cdr topic))
|
|
|
1354 func)))
|
|
|
1355 ;; Do the reversal, if necessary.
|
|
|
1356 (when reverse
|
|
|
1357 (setcdr topic (nreverse (cdr topic)))))
|
|
|
1358
|
|
|
1359 (defun gnus-topic-sort-groups (func &optional reverse)
|
|
|
1360 "Sort the current topic according to FUNC.
|
|
|
1361 If REVERSE, reverse the sorting order."
|
|
|
1362 (interactive (list gnus-group-sort-function current-prefix-arg))
|
|
|
1363 (let ((topic (assoc (gnus-current-topic) gnus-topic-alist)))
|
|
|
1364 (gnus-topic-sort-topic
|
|
|
1365 topic (gnus-make-sort-function func) reverse)
|
|
|
1366 (gnus-group-list-groups)))
|
|
|
1367
|
|
|
1368 (defun gnus-topic-sort-groups-by-alphabet (&optional reverse)
|
|
|
1369 "Sort the current topic alphabetically by group name.
|
|
|
1370 If REVERSE, sort in reverse order."
|
|
|
1371 (interactive "P")
|
|
|
1372 (gnus-topic-sort-groups 'gnus-group-sort-by-alphabet reverse))
|
|
|
1373
|
|
|
1374 (defun gnus-topic-sort-groups-by-unread (&optional reverse)
|
|
|
1375 "Sort the current topic by number of unread articles.
|
|
|
1376 If REVERSE, sort in reverse order."
|
|
|
1377 (interactive "P")
|
|
|
1378 (gnus-topic-sort-groups 'gnus-group-sort-by-unread reverse))
|
|
|
1379
|
|
|
1380 (defun gnus-topic-sort-groups-by-level (&optional reverse)
|
|
|
1381 "Sort the current topic by group level.
|
|
|
1382 If REVERSE, sort in reverse order."
|
|
|
1383 (interactive "P")
|
|
|
1384 (gnus-topic-sort-groups 'gnus-group-sort-by-level reverse))
|
|
|
1385
|
|
|
1386 (defun gnus-topic-sort-groups-by-score (&optional reverse)
|
|
|
1387 "Sort the current topic by group score.
|
|
|
1388 If REVERSE, sort in reverse order."
|
|
|
1389 (interactive "P")
|
|
|
1390 (gnus-topic-sort-groups 'gnus-group-sort-by-score reverse))
|
|
|
1391
|
|
|
1392 (defun gnus-topic-sort-groups-by-rank (&optional reverse)
|
|
|
1393 "Sort the current topic by group rank.
|
|
|
1394 If REVERSE, sort in reverse order."
|
|
|
1395 (interactive "P")
|
|
|
1396 (gnus-topic-sort-groups 'gnus-group-sort-by-rank reverse))
|
|
|
1397
|
|
|
1398 (defun gnus-topic-sort-groups-by-method (&optional reverse)
|
|
|
1399 "Sort the current topic alphabetically by backend name.
|
|
|
1400 If REVERSE, sort in reverse order."
|
|
|
1401 (interactive "P")
|
|
|
1402 (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse))
|
|
|
1403
|
|
0
|
1404 (provide 'gnus-topic)
|
|
|
1405
|
|
|
1406 ;;; gnus-topic.el ends here
|
