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[PATCH] RFC4731 for lisp/net/imap.el
From: |
Vitaly Mayatskikh |
Subject: |
[PATCH] RFC4731 for lisp/net/imap.el |
Date: |
Thu, 14 Aug 2008 11:10:17 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
Hi!
I've added support for "IMAP4 Extension to SEARCH Command for Controlling
What Kind of Information Is Returned". It allows Gnus to uses some nice
features like very fast searching of minuid/maxuid or retrieving results
for SEARCH command in sequence-set. Also patch automatically routes query
from imap-search routine to the new imap-esearch when possible, as it
significantly reduces amount of consumed traffic.
Patch was tested with Zimbra server and it works well so far.
diff -puw lisp/net/imap.el.orig lisp/net/imap.el
--- lisp/net/imap.el.orig 2008-05-06 09:31:46.000000000 +0200
+++ lisp/net/imap.el 2008-08-14 10:40:31.000000000 +0200
@@ -1721,6 +1721,8 @@ is non-nil return these properties."
(imap-message-get ,uid 'BODY)))
(defun imap-search (predicate &optional buffer)
+ (if (imap-capability 'ESEARCH)
+ (car (imap-esearch (concat "UID SEARCH RETURN (ALL) " predicate) '(ALL)))
(with-current-buffer (or buffer (current-buffer))
(imap-mailbox-put 'search 'dummy)
(when (imap-ok-p (imap-send-command-wait (concat "UID SEARCH " predicate)))
@@ -1728,7 +1730,39 @@ is non-nil return these properties."
(progn
(message "Missing SEARCH response to a SEARCH command (server not
RFC compliant)...")
nil)
- (imap-mailbox-get-1 'search imap-current-mailbox)))))
+ (imap-mailbox-get-1 'search imap-current-mailbox))))))
+
+(defun imap-esearch (query tags &optional buffer)
+ (with-current-buffer (or buffer (current-buffer))
+ (imap-mailbox-put 'esearch 'dummy)
+ (when (imap-ok-p (imap-send-command-wait query))
+ (if (eq (imap-mailbox-get-1 'esearch imap-current-mailbox) 'dummy)
+ (progn
+ (message "Missing ESEARCH response to a SEARCH command (server not
RFC compliant)...")
+ nil)
+ (let ((answer (imap-mailbox-get-1 'esearch imap-current-mailbox))
+ tag result)
+ (while answer
+ (setq tag (intern (upcase (car answer))))
+ (cond ((eq tag 'UID)
+ nil)
+ ((memq tag tags)
+ (setq result
+ (append result
+ (list
+ (if (eq tag 'ALL)
+ (gnus-uncompress-range
+ (mapcar #'(lambda (x)
+ (let ((y (split-string x
":")))
+ (if (null (cdr y))
+ (string-to-number (car
y))
+ (cons (string-to-number
(car y))
+ (string-to-number
(cadr y))))))
+ (split-string (cadr answer)
"\,")))
+ (string-to-number (cadr answer)))))))
+ (t nil))
+ (setq answer (cdr answer)))
+ result)))))
(defun imap-message-flag-permanent-p (flag &optional mailbox buffer)
"Return t if FLAG can be permanently (between IMAP sessions) saved on
articles, in MAILBOX on server in BUFFER."
@@ -2265,6 +2299,9 @@ Return nil if no complete line has arriv
(SEARCH (imap-mailbox-put
'search
(read (concat "(" (buffer-substring (point)
(point-max)) ")"))))
+ (ESEARCH (imap-mailbox-put
+ 'esearch
+ (cddr (split-string (buffer-substring (point)
(point-max)) " " "\,"))))
(STATUS (imap-parse-status))
(CAPABILITY (setq imap-capability
(read (concat "(" (upcase (buffer-substring
Thanks!
--
wbr, Vitaly
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