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Annotation of GNUtools/emacs/lisp/rmailkwd.el, revision 1.1

1.1     ! root        1: ;; "RMAIL" mail reader for Emacs.
        !             2: ;; Copyright (C) 1985, 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is free software; you can redistribute it and/or modify
        !             7: ;; it under the terms of the GNU General Public License as published by
        !             8: ;; the Free Software Foundation; either version 1, or (at your option)
        !             9: ;; any later version.
        !            10: 
        !            11: ;; GNU Emacs is distributed in the hope that it will be useful,
        !            12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: ;; GNU General Public License for more details.
        !            15: 
        !            16: ;; You should have received a copy of the GNU General Public License
        !            17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20: 
        !            21: ;; Global to all RMAIL buffers.  It exists primarily for the sake of
        !            22: ;; completion.  It is better to use strings with the label functions
        !            23: ;; and let them worry about making the label.
        !            24: 
        !            25: (defvar rmail-label-obarray (make-vector 47 0))
        !            26: 
        !            27: ;; Named list of symbols representing valid message attributes in RMAIL.
        !            28: 
        !            29: (defconst rmail-attributes
        !            30:   (cons 'rmail-keywords
        !            31:        (mapcar '(lambda (s) (intern s rmail-label-obarray))
        !            32:                '("deleted" "answered" "filed" "forwarded" "unseen" "edited"))))
        !            33: 
        !            34: (defconst rmail-deleted-label (intern "deleted" rmail-label-obarray))
        !            35: 
        !            36: ;; Named list of symbols representing valid message keywords in RMAIL.
        !            37: 
        !            38: (defvar rmail-keywords nil)
        !            39: 
        !            40: (defun rmail-add-label (string)
        !            41:   "Add LABEL to labels associated with current RMAIL message.
        !            42: Completion is performed over known labels when reading."
        !            43:   (interactive (list (rmail-read-label "Add label")))
        !            44:   (rmail-set-label string t))
        !            45: 
        !            46: (defun rmail-kill-label (string)
        !            47:   "Remove LABEL from labels associated with current RMAIL message.
        !            48: Completion is performed over known labels when reading."
        !            49:   (interactive (list (rmail-read-label "Remove label")))
        !            50:   (rmail-set-label string nil))
        !            51: 
        !            52: (defun rmail-read-label (prompt)
        !            53:   (if (not rmail-keywords) (rmail-parse-file-keywords))
        !            54:   (let ((result
        !            55:         (completing-read (concat prompt
        !            56:                                  (if rmail-last-label
        !            57:                                      (concat " (default "
        !            58:                                              (symbol-name rmail-last-label)
        !            59:                                              "): ")
        !            60:                                    ": "))
        !            61:                          rmail-label-obarray
        !            62:                          nil
        !            63:                          nil)))
        !            64:     (if (string= result "")
        !            65:        rmail-last-label
        !            66:       (setq rmail-last-label (rmail-make-label result t)))))
        !            67: 
        !            68: (defun rmail-set-label (l state &optional n)
        !            69:   (rmail-maybe-set-message-counters)
        !            70:   (if (not n) (setq n rmail-current-message))
        !            71:   (aset rmail-summary-vector (1- n) nil)
        !            72:   (let* ((attribute (rmail-attribute-p l))
        !            73:         (keyword (and (not attribute)
        !            74:                       (or (rmail-keyword-p l)
        !            75:                           (rmail-install-keyword l))))
        !            76:         (label (or attribute keyword)))
        !            77:     (if label
        !            78:        (let ((omax (- (buffer-size) (point-max)))
        !            79:              (omin (- (buffer-size) (point-min)))
        !            80:              (buffer-read-only nil)
        !            81:              (case-fold-search t))
        !            82:          (unwind-protect
        !            83:              (save-excursion
        !            84:                (widen)
        !            85:                (goto-char (rmail-msgbeg n))
        !            86:                (forward-line 1)
        !            87:                (if (not (looking-at "[01],"))
        !            88:                    nil
        !            89:                  (let ((start (1+ (point)))
        !            90:                        (bound))
        !            91:                    (narrow-to-region (point) (progn (end-of-line) (point)))
        !            92:                    (setq bound (point-max))
        !            93:                    (search-backward ",," nil t)
        !            94:                    (if attribute
        !            95:                        (setq bound (1+ (point)))
        !            96:                      (setq start (1+ (point))))
        !            97:                    (goto-char start)
        !            98: ;                  (while (re-search-forward "[ \t]*,[ \t]*" nil t)
        !            99: ;                    (replace-match ","))
        !           100: ;                  (goto-char start)
        !           101:                    (if (re-search-forward
        !           102:                           (concat ", " (rmail-quote-label-name label) ",")
        !           103:                           bound
        !           104:                           'move)
        !           105:                        (if (not state) (replace-match ","))
        !           106:                      (if state (insert " " (symbol-name label) ",")))
        !           107:                    (if (eq label rmail-deleted-label)
        !           108:                        (rmail-set-message-deleted-p n state)))))
        !           109:            (narrow-to-region (- (buffer-size) omin) (- (buffer-size) omax))
        !           110:            (if (= n rmail-current-message) (rmail-display-labels)))))))
        !           111: 
        !           112: ;; Commented functions aren't used by RMAIL but might be nice for user
        !           113: ;; packages that do stuff with RMAIL.  Note that rmail-message-labels-p
        !           114: ;; is in rmailsum now.
        !           115: 
        !           116: ;(defun rmail-message-attribute-p (attribute &optional n)
        !           117: ;  "Returns t if ATTRIBUTE on NTH or current message."
        !           118: ;  (rmail-message-labels-p (rmail-make-label attribute t) n))
        !           119: 
        !           120: ;(defun rmail-message-keyword-p (keyword &optional n)
        !           121: ;  "Returns t if KEYWORD on NTH or current message."
        !           122: ;  (rmail-message-labels-p (rmail-make-label keyword t) n t))
        !           123: 
        !           124: ;(defun rmail-message-label-p (label &optional n)
        !           125: ;  "Returns symbol if LABEL (attribute or keyword) on NTH or current message."
        !           126: ;  (rmail-message-labels-p (rmail-make-label label t) n 'all))
        !           127: 
        !           128: ;; Not used by RMAIL but might be nice for user package.
        !           129: 
        !           130: ;(defun rmail-parse-message-labels (&optional n)
        !           131: ;  "Returns labels associated with NTH or current RMAIL message.
        !           132: ;Results is a list of two lists.  The first is the message attributes
        !           133: ;and the second is the message keywords.  Labels are represented as symbols."
        !           134: ;  (let ((omin (- (buffer-size) (point-min)))
        !           135: ;      (omax (- (buffer-size) (point-max)))
        !           136: ;      (result))       
        !           137: ;    (unwind-protect
        !           138: ;      (save-excursion
        !           139: ;        (let ((beg (rmail-msgbeg (or n rmail-current-message))))
        !           140: ;          (widen)
        !           141: ;          (goto-char beg)
        !           142: ;          (forward-line 1)
        !           143: ;          (if (looking-at "[01],")
        !           144: ;              (save-restriction
        !           145: ;                (narrow-to-region (point) (save-excursion (end-of-line) (point)))
        !           146: ;                (rmail-nuke-whitespace)
        !           147: ;                (goto-char (1+ (point-min)))
        !           148: ;                (list (mail-parse-comma-list) (mail-parse-comma-list))))))
        !           149: ;      (narrow-to-region (- (buffer-size) omin)
        !           150: ;                       (- (buffer-size) omax))
        !           151: ;      nil)))
        !           152: 
        !           153: (defun rmail-attribute-p (s)
        !           154:   (let ((symbol (rmail-make-label s)))
        !           155:     (if (memq symbol (cdr rmail-attributes)) symbol)))
        !           156: 
        !           157: (defun rmail-keyword-p (s)
        !           158:   (let ((symbol (rmail-make-label s)))
        !           159:     (if (memq symbol (cdr (rmail-keywords))) symbol)))
        !           160: 
        !           161: (defun rmail-make-label (s &optional forcep)
        !           162:   (cond ((symbolp s) s)
        !           163:        (forcep (intern (downcase s) rmail-label-obarray))
        !           164:        (t  (intern-soft (downcase s) rmail-label-obarray))))
        !           165: 
        !           166: (defun rmail-force-make-label (s)
        !           167:   (intern (downcase s) rmail-label-obarray))
        !           168: 
        !           169: (defun rmail-quote-label-name (label)
        !           170:   (regexp-quote (symbol-name (rmail-make-label label t))))
        !           171: 
        !           172: ;; Motion on messages with keywords.
        !           173: 
        !           174: (defun rmail-previous-labeled-message (n label)
        !           175:   "Show previous message with LABEL.  Defaults to last labels used.
        !           176: With prefix argument N moves backward N messages with these labels."
        !           177:   (interactive "p\nsMove to previous msg with labels: ")
        !           178:   (rmail-next-labeled-message (- n) label))
        !           179: 
        !           180: (defun rmail-next-labeled-message (n labels)
        !           181:   "Show next message with LABEL.  Defaults to last labels used.
        !           182: With prefix argument N moves forward N messages with these labels."
        !           183:   (interactive "p\nsMove to next msg with labels: ")
        !           184:   (if (string= labels "")
        !           185:       (setq labels rmail-last-multi-labels))
        !           186:   (or labels
        !           187:       (error "No labels to find have been specified previously"))
        !           188:   (setq rmail-last-multi-labels labels)
        !           189:   (rmail-maybe-set-message-counters)
        !           190:   (let ((lastwin rmail-current-message)
        !           191:        (current rmail-current-message)
        !           192:        (regexp (concat ", ?\\("
        !           193:                        (mail-comma-list-regexp labels)
        !           194:                        "\\),")))
        !           195:     (save-restriction
        !           196:       (widen)
        !           197:       (while (and (> n 0) (< current rmail-total-messages))
        !           198:        (setq current (1+ current))
        !           199:        (if (rmail-message-labels-p current regexp)
        !           200:            (setq lastwin current n (1- n))))
        !           201:       (while (and (< n 0) (> current 1))
        !           202:        (setq current (1- current))
        !           203:        (if (rmail-message-labels-p current regexp)
        !           204:            (setq lastwin current n (1+ n)))))
        !           205:     (rmail-show-message lastwin)
        !           206:     (if (< n 0)
        !           207:        (message "No previous message with labels %s" labels))
        !           208:     (if (> n 0)
        !           209:        (message "No following message with labels %s" labels))))
        !           210: 
        !           211: ;;; Manipulate the file's Labels option.
        !           212: 
        !           213: ;; Return a list of symbols for all
        !           214: ;; the keywords (labels) recorded in this file's Labels option.
        !           215: (defun rmail-keywords ()
        !           216:   (or rmail-keywords (rmail-parse-file-keywords)))
        !           217: 
        !           218: ;; Set rmail-keywords to a list of symbols for all
        !           219: ;; the keywords (labels) recorded in this file's Labels option.
        !           220: (defun rmail-parse-file-keywords ()
        !           221:   (save-restriction
        !           222:     (save-excursion
        !           223:       (widen)
        !           224:       (goto-char 1)
        !           225:       (setq rmail-keywords
        !           226:            (if (search-forward "\nLabels:" (rmail-msgbeg 1) t)
        !           227:                (progn
        !           228:                  (narrow-to-region (point) (progn (end-of-line) (point)))
        !           229:                  (goto-char (point-min))
        !           230:                  (cons 'rmail-keywords
        !           231:                        (mapcar 'rmail-force-make-label
        !           232:                                (mail-parse-comma-list)))))))))
        !           233: 
        !           234: ;; Add WORD to the list in the file's Labels option.
        !           235: ;; Any keyword used for the first time needs this done.
        !           236: (defun rmail-install-keyword (word)
        !           237:   (let ((keyword (rmail-make-label word t))
        !           238:        (keywords (rmail-keywords)))
        !           239:     (if (not (or (rmail-attribute-p keyword)
        !           240:                 (rmail-keyword-p keyword)))
        !           241:        (let ((omin (- (buffer-size) (point-min)))
        !           242:              (omax (- (buffer-size) (point-max))))
        !           243:          (unwind-protect
        !           244:              (save-excursion
        !           245:                (widen)
        !           246:                (goto-char 1)
        !           247:                (let ((case-fold-search t)
        !           248:                      (buffer-read-only nil))
        !           249:                  (or (search-forward "\nLabels:" nil t)
        !           250:                      (progn
        !           251:                        (end-of-line)
        !           252:                        (insert "\nLabels:")))
        !           253:                  (delete-region (point) (progn (end-of-line) (point)))
        !           254:                  (setcdr keywords (cons keyword (cdr keywords)))
        !           255:                  (while (setq keywords (cdr keywords))
        !           256:                    (insert (symbol-name (car keywords)) ","))
        !           257:                  (delete-char -1)))
        !           258:            (narrow-to-region (- (buffer-size) omin)
        !           259:                              (- (buffer-size) omax)))))
        !           260:     keyword))

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