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1 ;;; mh-pick --- make a search pattern and search for a message in mh-e
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2 ;; Time-stamp: <95/08/19 16:45:16 gildea>
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3
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4 ;; Copyright (C) 1993, 1995 Free Software Foundation, Inc.
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5
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6 ;; This file is part of mh-e, part of GNU Emacs.
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7
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8 ;; GNU Emacs is free software; you can redistribute it and/or modify
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9 ;; it under the terms of the GNU General Public License as published by
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10 ;; the Free Software Foundation; either version 2, or (at your option)
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11 ;; any later version.
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12
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13 ;; GNU Emacs is distributed in the hope that it will be useful,
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14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 ;; GNU General Public License for more details.
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17
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18 ;; You should have received a copy of the GNU General Public License
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19 ;; along with GNU Emacs; see the file COPYING. If not, write to
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20 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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21
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22 ;;; Commentary:
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23
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24 ;; Internal support for mh-e package.
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25
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26 ;;; Change Log:
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27
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28 ;; $Id: mh-pick.el,v 1.1.1.1 1996/12/18 03:34:38 steve Exp $
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29
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30 ;;; Code:
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31
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32 (provide 'mh-pick)
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33 (require 'mh-e)
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34
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35 (defvar mh-pick-mode-hook nil
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36 "Invoked in `mh-pick-mode' on a new pattern.")
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37
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38 ;;; Internal variables:
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39
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40 (defvar mh-pick-mode-map (make-sparse-keymap)
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41 "Keymap for searching folder.")
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42
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43 (defvar mh-searching-folder nil) ;Folder this pick is searching.
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44
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45 (defun mh-search-folder (folder)
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46 "Search FOLDER for messages matching a pattern.
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47 Add the messages found to the sequence named `search'."
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48 (interactive (list (mh-prompt-for-folder "Search"
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49 mh-current-folder
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50 t)))
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51 (switch-to-buffer-other-window "pick-pattern")
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52 (if (or (zerop (buffer-size))
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53 (not (y-or-n-p "Reuse pattern? ")))
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54 (mh-make-pick-template)
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55 (message ""))
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56 (setq mh-searching-folder folder))
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57
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58 (defun mh-make-pick-template ()
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59 ;; Initialize the current buffer with a template for a pick pattern.
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60 (erase-buffer)
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61 (insert "From: \n"
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62 "To: \n"
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63 "Cc: \n"
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64 "Date: \n"
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65 "Subject: \n"
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66 "---------\n")
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67 (mh-pick-mode)
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68 (goto-char (point-min))
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69 (end-of-line))
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70
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71 (put 'mh-pick-mode 'mode-class 'special)
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72
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73 (defun mh-pick-mode ()
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74 "Mode for creating search templates in mh-e.\\<mh-pick-mode-map>
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75 After each field name, enter the pattern to search for. If a field's
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76 value does not matter for the search, leave it empty. To search the
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77 entire message, supply the pattern in the \"body\" of the template.
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78 Each non-empty field must be matched for a message to be selected.
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79 To effect a logical \"or\", use \\[mh-search-folder] multiple times.
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80 When you have finished, type \\[mh-do-pick-search] to do the search.
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81 \\{mh-pick-mode-map}
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82 Turning on mh-pick-mode calls the value of the variable mh-pick-mode-hook
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83 if that value is non-nil."
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84 (interactive)
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85 (kill-all-local-variables)
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86 (make-local-variable 'mh-searching-folder)
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87 (use-local-map mh-pick-mode-map)
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88 (setq major-mode 'mh-pick-mode)
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89 (mh-set-mode-name "MH-Pick")
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90 (run-hooks 'mh-pick-mode-hook))
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91
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92
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93 (defun mh-do-pick-search ()
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94 "Find messages that match the qualifications in the current pattern buffer.
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95 Messages are searched for in the folder named in mh-searching-folder.
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96 Add the messages found to the sequence named `search'."
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97 (interactive)
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98 (let ((pattern-buffer (buffer-name))
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99 (searching-buffer mh-searching-folder)
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100 range
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101 msgs
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102 (finding-messages t)
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103 (pattern nil)
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104 (new-buffer nil))
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105 (save-excursion
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106 (cond ((get-buffer searching-buffer)
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107 (set-buffer searching-buffer)
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108 (setq range (list (format "%d-%d"
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109 mh-first-msg-num mh-last-msg-num))))
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110 (t
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111 (mh-make-folder searching-buffer)
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112 (setq range '("all"))
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113 (setq new-buffer t))))
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114 (message "Searching...")
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115 (goto-char (point-min))
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116 (while (and range
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117 (setq pattern (mh-next-pick-field pattern-buffer)))
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118 (setq msgs (mh-seq-from-command searching-buffer
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119 'search
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120 (mh-list-to-string
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121 (list "pick" pattern searching-buffer
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122 "-list"
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123 (mh-coalesce-msg-list range)))))
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124 (setq range msgs)) ;restrict the pick range for next pass
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125 (message "Searching...done")
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126 (if new-buffer
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127 (mh-scan-folder searching-buffer msgs)
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128 (switch-to-buffer searching-buffer))
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129 (mh-add-msgs-to-seq msgs 'search)
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130 (delete-other-windows)))
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131
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132
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133 (defun mh-seq-from-command (folder seq seq-command)
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134 ;; In FOLDER, make a sequence named SEQ by executing COMMAND.
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135 ;; COMMAND is a list. The first element is a program name
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136 ;; and the subsequent elements are its arguments, all strings.
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137 (let ((msg)
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138 (msgs ())
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139 (case-fold-search t))
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140 (save-excursion
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141 (save-window-excursion
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142 (if (eq 0 (apply 'mh-exec-cmd-quiet nil seq-command))
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143 ;; "pick" outputs one number per line
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144 (while (setq msg (car (mh-read-msg-list)))
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145 (setq msgs (cons msg msgs))
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146 (forward-line 1))))
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147 (set-buffer folder)
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148 (setq msgs (nreverse msgs)) ;put in ascending order
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149 msgs)))
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150
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151
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152 (defun mh-next-pick-field (buffer)
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153 ;; Return the next piece of a pick argument that can be extracted from the
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154 ;; BUFFER.
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155 ;; Return a list like ("--fieldname" "pattern") or ("-search" "bodypat")
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156 ;; or NIL if no pieces remain.
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157 (set-buffer buffer)
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158 (let ((case-fold-search t))
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159 (cond ((eobp)
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160 nil)
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161 ((re-search-forward "^\\([a-z][^: \t\n]*\\):[ \t]*\\([a-z0-9].*\\)$" nil t)
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162 (let* ((component
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163 (format "--%s"
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164 (downcase (buffer-substring (match-beginning 1)
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165 (match-end 1)))))
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166 (pat (buffer-substring (match-beginning 2) (match-end 2))))
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167 (forward-line 1)
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168 (list component pat)))
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169 ((re-search-forward "^-*$" nil t)
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170 (forward-char 1)
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171 (let ((body (buffer-substring (point) (point-max))))
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172 (if (and (> (length body) 0) (not (equal body "\n")))
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173 (list "-search" body)
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174 nil)))
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175 (t
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176 nil))))
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177
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178 ;;; Build the pick-mode keymap:
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179
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180 (define-key mh-pick-mode-map "\C-c\C-c" 'mh-do-pick-search)
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181 (define-key mh-pick-mode-map "\C-c\C-f\C-b" 'mh-to-field)
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182 (define-key mh-pick-mode-map "\C-c\C-f\C-c" 'mh-to-field)
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183 (define-key mh-pick-mode-map "\C-c\C-f\C-d" 'mh-to-field)
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184 (define-key mh-pick-mode-map "\C-c\C-f\C-f" 'mh-to-field)
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185 (define-key mh-pick-mode-map "\C-c\C-f\C-r" 'mh-to-field)
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186 (define-key mh-pick-mode-map "\C-c\C-f\C-s" 'mh-to-field)
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187 (define-key mh-pick-mode-map "\C-c\C-f\C-t" 'mh-to-field)
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188 (define-key mh-pick-mode-map "\C-c\C-fb" 'mh-to-field)
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189 (define-key mh-pick-mode-map "\C-c\C-fc" 'mh-to-field)
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190 (define-key mh-pick-mode-map "\C-c\C-fd" 'mh-to-field)
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191 (define-key mh-pick-mode-map "\C-c\C-ff" 'mh-to-field)
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192 (define-key mh-pick-mode-map "\C-c\C-fr" 'mh-to-field)
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193 (define-key mh-pick-mode-map "\C-c\C-fs" 'mh-to-field)
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194 (define-key mh-pick-mode-map "\C-c\C-ft" 'mh-to-field)
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