diff options
Diffstat (limited to 'lisp/gnus/pop3.el')
| -rw-r--r-- | lisp/gnus/pop3.el | 163 |
1 files changed, 99 insertions, 64 deletions
diff --git a/lisp/gnus/pop3.el b/lisp/gnus/pop3.el index 20f7ba34b3..4f28dcdca4 100644 --- a/lisp/gnus/pop3.el +++ b/lisp/gnus/pop3.el @@ -33,6 +33,7 @@ ;;; Code: +(eval-when-compile (require 'cl)) (require 'mail-utils) (defvar parse-time-months) @@ -98,12 +99,6 @@ thing can fall apart and leave you with a corrupt mailbox." :type 'boolean :group 'pop3) -(defcustom pop3-display-message-size-flag t - "*If non-nil, display the size of the message that is being fetched." - :version "22.1" ;; Oort Gnus - :type 'boolean - :group 'pop3) - (defvar pop3-timestamp nil "Timestamp returned when initially connected to the POP server. Used for APOP authentication.") @@ -120,7 +115,7 @@ Used for APOP authentication.") (defalias 'pop3-accept-process-output 'nnheader-accept-process-output) ;; Borrowed from `nnheader.el': (defvar pop3-read-timeout - (if (string-match "windows-nt\\|os/2\\|emx\\|cygwin" + (if (string-match "windows-nt\\|os/2\\|cygwin" (symbol-name system-type)) 1.0 0.01) @@ -134,15 +129,92 @@ Shorter values mean quicker response, but are more CPU intensive.") (truncate pop3-read-timeout)) 1000)))))) -(defun pop3-movemail (&optional crashbox) - "Transfer contents of a maildrop to the specified CRASHBOX." - (or crashbox (setq crashbox (expand-file-name "~/.crashbox"))) +;;;###autoload +(defun pop3-movemail (file) + "Transfer contents of a maildrop to the specified FILE. +Use streaming commands." (let* ((process (pop3-open-server pop3-mailhost pop3-port)) - (crashbuf (get-buffer-create " *pop3-retr*")) - (n 1) - message-count - message-sizes - (pop3-password pop3-password)) + message-count message-total-size) + (pop3-logon process) + (with-current-buffer (process-buffer process) + (let ((size (pop3-stat process))) + (setq message-count (car size) + message-total-size (cadr size))) + (when (plusp message-count) + (pop3-send-streaming-command + process "RETR" message-count message-total-size) + (pop3-write-to-file file) + (unless pop3-leave-mail-on-server + (pop3-send-streaming-command + process "DELE" message-count nil)))) + (pop3-quit process) + t)) + +(defun pop3-send-streaming-command (process command count total-size) + (erase-buffer) + (let ((i 1)) + (while (>= count i) + (process-send-string process (format "%s %d\r\n" command i)) + ;; Only do 100 messages at a time to avoid pipe stalls. + (when (zerop (% i 100)) + (pop3-wait-for-messages process i total-size)) + (incf i))) + (pop3-wait-for-messages process count total-size)) + +(defun pop3-wait-for-messages (process count total-size) + (while (< (pop3-number-of-responses total-size) count) + (when total-size + (message "pop3 retrieved %dKB (%d%%)" + (truncate (/ (buffer-size) 1000)) + (truncate (* (/ (* (buffer-size) 1.0) + total-size) 100)))) + (nnheader-accept-process-output process))) + +(defun pop3-write-to-file (file) + (let ((pop-buffer (current-buffer)) + (start (point-min)) + beg end + temp-buffer) + (with-temp-buffer + (setq temp-buffer (current-buffer)) + (with-current-buffer pop-buffer + (goto-char (point-min)) + (while (re-search-forward "^\\+OK" nil t) + (forward-line 1) + (setq beg (point)) + (when (re-search-forward "^\\.\r?\n" nil t) + (setq start (point)) + (forward-line -1) + (setq end (point))) + (with-current-buffer temp-buffer + (goto-char (point-max)) + (let ((hstart (point))) + (insert-buffer-substring pop-buffer beg end) + (pop3-clean-region hstart (point)) + (goto-char (point-max)) + (pop3-munge-message-separator hstart (point)) + (goto-char (point-max)))))) + (let ((coding-system-for-write 'binary)) + (goto-char (point-min)) + ;; Check whether something inserted a newline at the start and + ;; delete it. + (when (eolp) + (delete-char 1)) + (write-region (point-min) (point-max) file nil 'nomesg))))) + +(defun pop3-number-of-responses (endp) + (let ((responses 0)) + (save-excursion + (goto-char (point-min)) + (while (or (and (re-search-forward "^\\+OK" nil t) + (or (not endp) + (re-search-forward "^\\.\r?\n" nil t))) + (re-search-forward "^-ERR " nil t)) + (incf responses))) + responses)) + +(defun pop3-logon (process) + (let ((pop3-password pop3-password)) ;; for debugging only (if pop3-debug (switch-to-buffer (process-buffer process))) ;; query for password @@ -154,42 +226,7 @@ Shorter values mean quicker response, but are more CPU intensive.") ((equal 'pass pop3-authentication-scheme) (pop3-user process pop3-maildrop) (pop3-pass process)) - (t (error "Invalid POP3 authentication scheme"))) - (setq message-count (car (pop3-stat process))) - (when (and pop3-display-message-size-flag - (> message-count 0)) - (setq message-sizes (pop3-list process))) - (unwind-protect - (while (<= n message-count) - (if pop3-display-message-size-flag - (message "Retrieving message %d of %d from %s... (%.1fk)" - n message-count pop3-mailhost - (/ (cdr (assoc n message-sizes)) - 1024.0)) - (message "Retrieving message %d of %d from %s..." - n message-count pop3-mailhost)) - (pop3-retr process n crashbuf) - (save-excursion - (set-buffer crashbuf) - (let ((coding-system-for-write 'binary)) - (write-region (point-min) (point-max) crashbox t 'nomesg)) - (set-buffer (process-buffer process)) - (while (> (buffer-size) 5000) - (goto-char (point-min)) - (forward-line 50) - (delete-region (point-min) (point)))) - (unless pop3-leave-mail-on-server - (pop3-dele process n)) - (setq n (+ 1 n)) - (pop3-accept-process-output process)) - (when (and pop3-leave-mail-on-server - (> n 1)) - (message "pop3.el doesn't support UIDL. Setting `pop3-leave-mail-on-server' -to %s might not give the result you'd expect." pop3-leave-mail-on-server) - (sit-for 1)) - (pop3-quit process)) - (kill-buffer crashbuf)) - t) + (t (error "Invalid POP3 authentication scheme"))))) (defun pop3-get-message-count () "Return the number of messages in the maildrop." @@ -229,6 +266,13 @@ this is nil, `ssl' is assumed for connexions to port (const :tag "SSL/TLS" ssl) (const starttls))) +(eval-and-compile + (if (fboundp 'set-process-query-on-exit-flag) + (defalias 'pop3-set-process-query-on-exit-flag + 'set-process-query-on-exit-flag) + (defalias 'pop3-set-process-query-on-exit-flag + 'process-kill-without-query))) + (defun pop3-open-server (mailhost port) "Open TCP connection to MAILHOST on PORT. Returns the process associated with the connection." @@ -283,22 +327,17 @@ Returns the process associated with the connection." (pop3-quit process) (error "POP server doesn't support starttls"))) process)) - (t + (t (open-network-stream "POP" (current-buffer) mailhost port)))) (let ((response (pop3-read-response process t))) (setq pop3-timestamp (substring response (or (string-match "<" response) 0) (+ 1 (or (string-match ">" response) -1))))) + (pop3-set-process-query-on-exit-flag process nil) process))) ;; Support functions -(defun pop3-process-filter (process output) - (save-excursion - (set-buffer (process-buffer process)) - (goto-char (point-max)) - (insert output))) - (defun pop3-send-command (process command) (set-buffer (process-buffer process)) (goto-char (point-max)) @@ -415,10 +454,7 @@ If NOW, use that time instead." nil (goto-char (point-max)) (insert "\n")) - (narrow-to-region (point) (point-max)) - (let ((size (- (point-max) (point-min)))) - (goto-char (point-min)) - (widen) + (let ((size (- (point-max) (point)))) (forward-line -1) (insert (format "Content-Length: %s\n" size))) ))))) @@ -468,7 +504,7 @@ If NOW, use that time instead." (defun pop3-list (process &optional msg) "If MSG is nil, return an alist of (MESSAGE-ID . SIZE) pairs. Otherwise, return the size of the message-id MSG" - (pop3-send-command process (if msg + (pop3-send-command process (if msg (format "LIST %d" msg) "LIST")) (let ((response (pop3-read-response process t))) @@ -643,5 +679,4 @@ and close the connection." (provide 'pop3) -;; arch-tag: 2facc142-1d74-498e-82af-4659b64cac12 ;;; pop3.el ends here |