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1 ;;; Delete and expunge commands for VM.
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2 ;;; Copyright (C) 1989, 1990, 1991, 1993, 1994, 1995 Kyle E. Jones
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3 ;;;
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4 ;;; This program is free software; you can redistribute it and/or modify
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5 ;;; it under the terms of the GNU General Public License as published by
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6 ;;; the Free Software Foundation; either version 1, or (at your option)
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7 ;;; any later version.
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8 ;;;
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9 ;;; This program is distributed in the hope that it will be useful,
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10 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ;;; GNU General Public License for more details.
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13 ;;;
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14 ;;; You should have received a copy of the GNU General Public License
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15 ;;; along with this program; if not, write to the Free Software
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16 ;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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17
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18 (provide 'vm-delete)
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19
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20 (defun vm-delete-message (count)
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21 "Add the `deleted' attribute to the current message.
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22
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23 The message will be physically deleted from the current folder the next
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24 time the current folder is expunged.
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25
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26 With a prefix argument COUNT, the current message and the next
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27 COUNT - 1 messages are deleted. A negative argument means the
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28 the current message and the previous |COUNT| - 1 messages are
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29 deleted.
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30
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31 When invoked on marked messages (via vm-next-command-uses-marks),
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32 only marked messages are deleted, other messages are ignored."
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33 (interactive "p")
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34 (if (interactive-p)
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35 (vm-follow-summary-cursor))
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36 (vm-select-folder-buffer)
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37 (vm-check-for-killed-summary)
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38 (vm-error-if-folder-read-only)
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39 (vm-error-if-folder-empty)
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40 (let ((used-marks (eq last-command 'vm-next-command-uses-marks))
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41 (mlist (vm-select-marked-or-prefixed-messages count))
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42 (del-count 0))
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43 (while mlist
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44 (if (not (vm-deleted-flag (car mlist)))
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45 (progn
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46 (vm-set-deleted-flag (car mlist) t)
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47 (vm-increment del-count)))
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48 (setq mlist (cdr mlist)))
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49 (vm-display nil nil '(vm-delete-message vm-delete-message-backward)
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50 (list this-command))
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51 (if (and used-marks (interactive-p))
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52 (if (zerop del-count)
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53 (message "No messages deleted")
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54 (message "%d message%s deleted"
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55 del-count
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56 (if (= 1 del-count) "" "s"))))
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57 (vm-update-summary-and-mode-line)
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58 (if (and vm-move-after-deleting (not used-marks))
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59 (let ((vm-circular-folders (and vm-circular-folders
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60 (eq vm-move-after-deleting t))))
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61 (vm-next-message count t executing-kbd-macro)))))
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62
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63 (defun vm-delete-message-backward (count)
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64 "Like vm-delete-message, except the deletion direction is reversed."
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65 (interactive "p")
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66 (if (interactive-p)
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67 (vm-follow-summary-cursor))
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68 (vm-delete-message (- count)))
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69
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70 (defun vm-undelete-message (count)
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71 "Remove the `deleted' attribute from the current message.
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72
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73 With a prefix argument COUNT, the current message and the next
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74 COUNT - 1 messages are undeleted. A negative argument means the
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75 the current message and the previous |COUNT| - 1 messages are
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76 deleted.
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77
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78 When invoked on marked messages (via vm-next-command-uses-marks),
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79 only marked messages are undeleted, other messages are ignored."
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80 (interactive "p")
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81 (if (interactive-p)
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82 (vm-follow-summary-cursor))
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83 (vm-select-folder-buffer)
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84 (vm-check-for-killed-summary)
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85 (vm-error-if-folder-read-only)
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86 (vm-error-if-folder-empty)
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87 (let ((used-marks (eq last-command 'vm-next-command-uses-marks))
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88 (mlist (vm-select-marked-or-prefixed-messages count))
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89 (undel-count 0))
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90 (while mlist
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91 (if (vm-deleted-flag (car mlist))
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92 (progn
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93 (vm-set-deleted-flag (car mlist) nil)
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94 (vm-increment undel-count)))
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95 (setq mlist (cdr mlist)))
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96 (if (and used-marks (interactive-p))
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97 (if (zerop undel-count)
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98 (message "No messages undeleted")
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99 (message "%d message%s undeleted"
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100 undel-count
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101 (if (= 1 undel-count)
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102 "" "s"))))
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103 (vm-display nil nil '(vm-undelete-message) '(vm-undelete-message))
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104 (vm-update-summary-and-mode-line)
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105 (if (and vm-move-after-undeleting (not used-marks))
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106 (let ((vm-circular-folders (and vm-circular-folders
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107 (eq vm-move-after-undeleting t))))
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108 (vm-next-message count t executing-kbd-macro)))))
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109
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110 (defun vm-kill-subject ()
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111 "Delete all messages with the same subject as the current message.
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112 Message subjects are compared after ignoring parts matched by
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113 the variables vm-subject-ignored-prefix and vm-subject-ignored-suffix."
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114 (interactive)
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115 (vm-follow-summary-cursor)
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116 (vm-select-folder-buffer)
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117 (vm-check-for-killed-summary)
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118 (vm-error-if-folder-read-only)
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119 (vm-error-if-folder-empty)
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120 (let ((subject (vm-so-sortable-subject (car vm-message-pointer)))
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121 (mp vm-message-list)
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122 (n 0)
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123 (case-fold-search t))
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124 (while mp
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125 (if (and (not (vm-deleted-flag (car mp)))
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126 (string-equal subject (vm-so-sortable-subject (car mp))))
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127 (progn
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128 (vm-set-deleted-flag (car mp) t)
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129 (vm-increment n)))
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130 (setq mp (cdr mp)))
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131 (and (interactive-p)
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132 (if (zerop n)
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133 (message "No messages deleted.")
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134 (message "%d message%s deleted" n (if (= n 1) "" "s")))))
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135 (vm-display nil nil '(vm-kill-subject) '(vm-kill-subject))
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136 (vm-update-summary-and-mode-line))
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137
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138 (defun vm-expunge-folder (&optional shaddap)
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139 "Expunge messages with the `deleted' attribute.
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140 For normal folders this means that the deleted messages are
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141 removed from the message list and the message contents are
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142 removed from the folder buffer.
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143
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144 For virtual folders, messages are removed from the virtual
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145 message list. If virtual mirroring is in effect for the virtual
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146 folder, the corresponding real messages are also removed from real
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147 message lists and the message contents are removed from real folders.
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148
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149 When invoked on marked messages (via vm-next-command-uses-marks),
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150 only messages both marked and deleted are expunged, other messages are
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151 ignored."
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152 (interactive)
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153 (vm-select-folder-buffer)
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154 (vm-check-for-killed-summary)
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155 (vm-error-if-folder-read-only)
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156 ;; do this so we have a clean slate. code below depends on the
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157 ;; fact that the numbering redo start point begins as nil in
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158 ;; all folder buffers.
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159 (vm-update-summary-and-mode-line)
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160 (if (not shaddap)
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161 (vm-unsaved-message "Expunging..."))
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162 (let ((use-marks (eq last-command 'vm-next-command-uses-marks))
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163 (mp vm-message-list)
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164 (virtual (eq major-mode 'vm-virtual-mode))
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165 (buffers-altered (make-vector 29 0))
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166 prev virtual-messages)
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167 (while mp
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168 (cond
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169 ((and (vm-deleted-flag (car mp))
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170 (or (not use-marks)
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171 (vm-mark-of (car mp))))
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172 ;; remove the message from the thread tree.
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173 (if vm-thread-obarray
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174 (vm-unthread-message (vm-real-message-of (car mp))))
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175 ;; expunge from the virtual side first, removing all
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176 ;; references to this message before actually removing
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177 ;; the message itself.
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178 (cond
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179 ((setq virtual-messages (vm-virtual-messages-of (car mp)))
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180 (let (vms prev curr)
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181 (if virtual
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182 (setq vms (cons (vm-real-message-of (car mp))
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183 (vm-virtual-messages-of (car mp))))
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184 (setq vms (vm-virtual-messages-of (car mp))))
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185 (while vms
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186 (save-excursion
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187 (set-buffer (vm-buffer-of (car vms)))
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188 (setq prev (vm-reverse-link-of (car vms))
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189 curr (or (cdr prev) vm-message-list))
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190 (intern (buffer-name) buffers-altered)
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191 (vm-set-numbering-redo-start-point (or prev t))
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192 (vm-set-summary-redo-start-point (or prev t))
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193 (if (eq vm-message-pointer curr)
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194 (setq vm-system-state nil
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195 vm-message-pointer (or prev (cdr curr))))
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196 (if (eq vm-last-message-pointer curr)
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197 (setq vm-last-message-pointer nil))
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198 ;; lock out interrupts to preserve message-list integrity
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199 (let ((inhibit-quit t))
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200 ;; vm-clear-expunge-invalidated-undos uses
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201 ;; this to recognize expunged messages.
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202 ;; If this stuff is mirrored we'll be
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203 ;; setting this value multiple times if there
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204 ;; are multiple virtual messages referencing
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205 ;; the underlying real message. Harmless.
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206 (vm-set-deleted-flag-of (car curr) 'expunged)
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207 ;; disable summary any summary update that may have
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208 ;; already been scheduled.
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209 (vm-set-su-start-of (car curr) nil)
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210 (vm-increment vm-modification-counter)
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211 (if (null prev)
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212 (progn
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213 (setq vm-message-list (cdr vm-message-list))
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214 (and (cdr curr)
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215 (vm-set-reverse-link-of (car (cdr curr)) nil)))
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216 (setcdr prev (cdr curr))
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217 (and (cdr curr)
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218 (vm-set-reverse-link-of (car (cdr curr)) prev)))
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219 (vm-set-virtual-messages-of (car mp) (cdr vms))
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220 (vm-set-buffer-modified-p t)))
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221 (setq vms (cdr vms))))))
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222 (cond
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223 ((or (not virtual-messages)
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224 (not virtual))
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225 (and (not virtual-messages) virtual
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226 (vm-set-virtual-messages-of
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227 (vm-real-message-of (car mp))
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228 (delq (car mp) (vm-virtual-messages-of
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229 (vm-real-message-of (car mp))))))
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230 (if (eq vm-message-pointer mp)
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231 (setq vm-system-state nil
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232 vm-message-pointer (or prev (cdr mp))))
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233 (if (eq vm-last-message-pointer mp)
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234 (setq vm-last-message-pointer nil))
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235 (intern (buffer-name) buffers-altered)
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236 (if (null vm-numbering-redo-start-point)
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237 (progn
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238 (vm-set-numbering-redo-start-point (or prev t))
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239 (vm-set-summary-redo-start-point (or prev t))))
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240 ;; lock out interrupt to preserve message list integrity
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241 (let ((inhibit-quit t))
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242 (if (null prev)
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243 (progn (setq vm-message-list (cdr vm-message-list))
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244 (and (cdr mp)
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245 (vm-set-reverse-link-of (car (cdr mp)) nil)))
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246 (setcdr prev (cdr mp))
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247 (and (cdr mp) (vm-set-reverse-link-of (car (cdr mp)) prev)))
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248 ;; vm-clear-expunge-invalidated-undos uses this to recognize
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249 ;; expunged messages.
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250 (vm-set-deleted-flag-of (car mp) 'expunged)
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251 ;; disable summary any summary update that may have
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252 ;; already been scheduled.
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253 (vm-set-su-start-of (car mp) nil)
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254 (vm-set-buffer-modified-p t)
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255 (vm-increment vm-modification-counter))))
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256 (if (eq (vm-attributes-of (car mp))
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257 (vm-attributes-of (vm-real-message-of (car mp))))
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258 (save-excursion
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259 (set-buffer (vm-buffer-of (vm-real-message-of (car mp))))
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260 (vm-save-restriction
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261 (widen)
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262 (let ((buffer-read-only nil))
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263 (delete-region (vm-start-of (vm-real-message-of (car mp)))
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264 (vm-end-of (vm-real-message-of (car mp)))))))))
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265 (t (setq prev mp)))
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266 (setq mp (cdr mp)))
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267 (vm-display nil nil '(vm-expunge-folder) '(vm-expunge-folder))
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268 (cond
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269 (buffers-altered
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270 (save-excursion
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271 (mapatoms
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272 (function
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273 (lambda (buffer)
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274 (set-buffer (symbol-name buffer))
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275 (if (null vm-system-state)
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276 (if (null vm-message-pointer)
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277 ;; folder is now empty
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278 (progn (setq vm-folder-type nil)
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279 (vm-update-summary-and-mode-line))
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280 (vm-preview-current-message))
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281 (vm-update-summary-and-mode-line))
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282 (if (not (eq major-mode 'vm-virtual-mode))
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283 (setq vm-message-order-changed
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284 (or vm-message-order-changed
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285 vm-message-order-header-present)))
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286 (vm-clear-expunge-invalidated-undos)))
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287 buffers-altered))
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288 (if (not shaddap)
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289 (message "Deleted messages expunged.")))
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290 (t (message "No messages are flagged for deletion.")))))
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