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;;; mh-pick --- make a search pattern and search for a message in mh-e
;; Time-stamp: <95/08/19 16:45:16 gildea>
;; Copyright (C) 1993, 1995 Free Software Foundation, Inc.
;; This file is part of mh-e, part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Internal support for mh-e package.
;;; Change Log:
;; $Id: mh-pick.el,v 1.4 1995/11/03 02:30:09 kwzh Exp erik $
;;; Code:
(provide 'mh-pick)
(require 'mh-e)
(defvar mh-pick-mode-hook nil
"Invoked in `mh-pick-mode' on a new pattern.")
;;; Internal variables:
(defvar mh-pick-mode-map (make-sparse-keymap)
"Keymap for searching folder.")
(defvar mh-searching-folder nil) ;Folder this pick is searching.
(defun mh-search-folder (folder)
"Search FOLDER for messages matching a pattern.
Add the messages found to the sequence named `search'."
(interactive (list (mh-prompt-for-folder "Search"
mh-current-folder
t)))
(switch-to-buffer-other-window "pick-pattern")
(if (or (zerop (buffer-size))
(not (y-or-n-p "Reuse pattern? ")))
(mh-make-pick-template)
(message ""))
(setq mh-searching-folder folder))
(defun mh-make-pick-template ()
;; Initialize the current buffer with a template for a pick pattern.
(erase-buffer)
(insert "From: \n"
"To: \n"
"Cc: \n"
"Date: \n"
"Subject: \n"
"---------\n")
(mh-pick-mode)
(goto-char (point-min))
(end-of-line))
(put 'mh-pick-mode 'mode-class 'special)
(defun mh-pick-mode ()
"Mode for creating search templates in mh-e.\\<mh-pick-mode-map>
After each field name, enter the pattern to search for. If a field's
value does not matter for the search, leave it empty. To search the
entire message, supply the pattern in the \"body\" of the template.
Each non-empty field must be matched for a message to be selected.
To effect a logical \"or\", use \\[mh-search-folder] multiple times.
When you have finished, type \\[mh-do-pick-search] to do the search.
\\{mh-pick-mode-map}
Turning on mh-pick-mode calls the value of the variable mh-pick-mode-hook
if that value is non-nil."
(interactive)
(kill-all-local-variables)
(make-local-variable 'mh-searching-folder)
(use-local-map mh-pick-mode-map)
(setq major-mode 'mh-pick-mode)
(mh-set-mode-name "MH-Pick")
(run-hooks 'mh-pick-mode-hook))
(defun mh-do-pick-search ()
"Find messages that match the qualifications in the current pattern buffer.
Messages are searched for in the folder named in mh-searching-folder.
Add the messages found to the sequence named `search'."
(interactive)
(let ((pattern-buffer (buffer-name))
(searching-buffer mh-searching-folder)
range
msgs
(finding-messages t)
(pattern nil)
(new-buffer nil))
(save-excursion
(cond ((get-buffer searching-buffer)
(set-buffer searching-buffer)
(setq range (list (format "%d-%d"
mh-first-msg-num mh-last-msg-num))))
(t
(mh-make-folder searching-buffer)
(setq range '("all"))
(setq new-buffer t))))
(message "Searching...")
(goto-char (point-min))
(while (and range
(setq pattern (mh-next-pick-field pattern-buffer)))
(setq msgs (mh-seq-from-command searching-buffer
'search
(mh-list-to-string
(list "pick" pattern searching-buffer
"-list"
(mh-coalesce-msg-list range)))))
(setq range msgs)) ;restrict the pick range for next pass
(message "Searching...done")
(if new-buffer
(mh-scan-folder searching-buffer msgs)
(switch-to-buffer searching-buffer))
(mh-add-msgs-to-seq msgs 'search)
(delete-other-windows)))
(defun mh-seq-from-command (folder seq seq-command)
;; In FOLDER, make a sequence named SEQ by executing COMMAND.
;; COMMAND is a list. The first element is a program name
;; and the subsequent elements are its arguments, all strings.
(let ((msg)
(msgs ())
(case-fold-search t))
(save-excursion
(save-window-excursion
(if (eq 0 (apply 'mh-exec-cmd-quiet nil seq-command))
;; "pick" outputs one number per line
(while (setq msg (car (mh-read-msg-list)))
(setq msgs (cons msg msgs))
(forward-line 1))))
(set-buffer folder)
(setq msgs (nreverse msgs)) ;put in ascending order
msgs)))
(defun mh-next-pick-field (buffer)
;; Return the next piece of a pick argument that can be extracted from the
;; BUFFER.
;; Return a list like ("--fieldname" "pattern") or ("-search" "bodypat")
;; or NIL if no pieces remain.
(set-buffer buffer)
(let ((case-fold-search t))
(cond ((eobp)
nil)
((re-search-forward "^\\([a-z][^: \t\n]*\\):[ \t]*\\([a-z0-9].*\\)$" nil t)
(let* ((component
(format "--%s"
(downcase (buffer-substring (match-beginning 1)
(match-end 1)))))
(pat (buffer-substring (match-beginning 2) (match-end 2))))
(forward-line 1)
(list component pat)))
((re-search-forward "^-*$" nil t)
(forward-char 1)
(let ((body (buffer-substring (point) (point-max))))
(if (and (> (length body) 0) (not (equal body "\n")))
(list "-search" body)
nil)))
(t
nil))))
;;; Build the pick-mode keymap:
(define-key mh-pick-mode-map "\C-c\C-c" 'mh-do-pick-search)
(define-key mh-pick-mode-map "\C-c\C-f\C-b" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-c" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-d" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-f" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-r" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-s" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-f\C-t" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-fb" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-fc" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-fd" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-ff" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-fr" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-fs" 'mh-to-field)
(define-key mh-pick-mode-map "\C-c\C-ft" 'mh-to-field)
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