From 39945b4f4a2b2753e76a3841872b260e37407d2b Mon Sep 17 00:00:00 2001 From: Chris Hanson Date: Thu, 15 Jun 2000 20:24:21 +0000 Subject: [PATCH] Implement mime-attachments buffer for editing message attachments. --- v7/src/edwin/sendmail.scm | 357 ++++++++++++++++++++++++++++++++++---- 1 file changed, 326 insertions(+), 31 deletions(-) diff --git a/v7/src/edwin/sendmail.scm b/v7/src/edwin/sendmail.scm index b1953a2ca..c2bab2f56 100644 --- a/v7/src/edwin/sendmail.scm +++ b/v7/src/edwin/sendmail.scm @@ -1,6 +1,6 @@ ;;; -*-Scheme-*- ;;; -;;; $Id: sendmail.scm,v 1.57 2000/06/14 02:35:09 cph Exp $ +;;; $Id: sendmail.scm,v 1.58 2000/06/15 20:24:21 cph Exp $ ;;; ;;; Copyright (c) 1991-2000 Massachusetts Institute of Technology ;;; @@ -361,6 +361,7 @@ Here are commands that move to a header field (and create it if there isn't): \\[mail-yank-original] mail-yank-original (insert current message, in Rmail). \\[mail-fill-yanked-message] mail-fill-yanked-message (fill what was yanked)." (lambda (buffer) + (add-kill-buffer-hook buffer mail-kill-buffer) (local-set-variable! paragraph-start (string-append "^" @@ -381,11 +382,17 @@ Here are commands that move to a header field (and create it if there isn't): "An event distributor that is invoked when entering Mail mode." (make-event-distributor)) +(define (mail-kill-buffer buffer) + (let ((attachments-buffer (buffer-get buffer 'MIME-ATTACHMENTS-BROWSER #f))) + (if attachments-buffer + (kill-buffer attachments-buffer)))) + (define-key 'mail '(#\C-c #\?) 'describe-mode) (define-key 'mail '(#\C-c #\C-f #\C-t) 'mail-to) (define-key 'mail '(#\C-c #\C-f #\C-b) 'mail-bcc) (define-key 'mail '(#\C-c #\C-f #\C-c) 'mail-cc) (define-key 'mail '(#\C-c #\C-f #\C-s) 'mail-subject) +(define-key 'mail '(#\C-c #\C-a) 'mail-browse-attachments) (define-key 'mail '(#\C-c #\C-w) 'mail-signature) (define-key 'mail '(#\C-c #\C-y) 'mail-yank-original) (define-key 'mail '(#\C-c #\C-q) 'mail-fill-yanked-message) @@ -881,46 +888,59 @@ the user from the mailer." (insert-mime-boundary boundary #t output-mark))) (define (insert-mime-attachment attachment m) - (let ((type (vector-ref attachment 0)) - (subtype (vector-ref attachment 1)) - (parameters (vector-ref attachment 2)) - (disposition (vector-ref attachment 3))) + (let ((type (mime-attachment-type attachment)) + (subtype (mime-attachment-subtype attachment))) (mail-insert-field-value m "Content-Type" (string-append (symbol->string type) "/" (symbol->string subtype) - (mime-parameters->string parameters))) + (mime-parameters->string + (mime-attachment-parameters attachment)))) (if (and (eq? type 'MESSAGE) (eq? subtype 'RFC822)) (if (not (ref-variable mail-abbreviate-mime m)) (mail-insert-field-value m "Content-Transfer-Encoding" "7bit")) - (mail-insert-field-value m "Content-Transfer-Encoding" "base64")) - (if disposition - (mail-insert-field-value m - "Content-Disposition" - (mime-disposition->string disposition))) + (mail-insert-field-value m "Content-Transfer-Encoding" + (if (eq? type 'TEXT) + "quoted-printable" + "base64"))) + (let ((disposition (mime-attachment-disposition attachment))) + (if disposition + (mail-insert-field-value m + "Content-Disposition" + (mime-disposition->string disposition)))) (insert-newline m) (if (and (eq? type 'MESSAGE) (eq? subtype 'RFC822)) (begin - (insert-headers (vector-ref attachment 4) m) + (insert-headers (mime-attachment-message-headers attachment) m) (insert-newline m) - (insert-string (vector-ref attachment 5) m)) + (insert-string (mime-attachment-message-body attachment) m)) (call-with-output-mark m (lambda (output-port) - (let ((context - (encode-base64:initialize output-port - (vector-ref attachment 4)))) - (call-with-input-file (vector-ref attachment 5) - (lambda (input-port) - (let ((buffer (make-string 4096))) - (let loop () - (let ((n-read (read-string! buffer input-port))) - (if (> n-read 0) - (begin - (encode-base64:update context buffer 0 n-read) - (loop)))))))) - (encode-base64:finalize context))))))) + (call-with-values + (lambda () + (if (eq? type 'TEXT) + (values encode-quoted-printable:initialize + encode-quoted-printable:update + encode-quoted-printable:finalize + #t) + (values encode-base64:initialize + encode-base64:update + encode-base64:finalize + #f))) + (lambda (initialize update finalize text?) + (let ((context (initialize output-port text?))) + (call-with-input-file (mime-attachment-pathname attachment) + (lambda (input-port) + (let ((buffer (make-string 4096))) + (let loop () + (let ((n-read (read-string! buffer input-port))) + (if (> n-read 0) + (begin + (update context buffer 0 n-read) + (loop)))))))) + (finalize context))))))))) (define (enable-buffer-mime-processing! buffer) (buffer-remove! buffer 'MAIL-DISABLE-MIME-PROCESSING)) @@ -934,11 +954,17 @@ the user from the mailer." (define (add-buffer-mime-attachment! buffer type subtype parameters disposition . rest) - (set-buffer-mime-attachments! - buffer - (cons (list->vector - (cons* type subtype parameters disposition rest)) - (buffer-mime-attachments buffer)))) + (let ((attachment + (list->vector (cons* type subtype parameters disposition rest)))) + (set-buffer-mime-attachments! buffer + (cons attachment + (buffer-mime-attachments buffer))) + attachment)) + +(define (delete-buffer-mime-attachment! buffer attachment) + (set-buffer-mime-attachments! buffer + (delq! attachment + (buffer-mime-attachments buffer)))) (define (buffer-mime-attachments buffer) (buffer-get buffer 'MAIL-MIME-ATTACHMENTS '())) @@ -956,6 +982,27 @@ the user from the mailer." ")"))) buffer) (buffer-modeline-event! buffer 'PROCESS-STATUS)) + +(define-integrable (mime-attachment-type attachment) + (vector-ref attachment 0)) + +(define-integrable (mime-attachment-subtype attachment) + (vector-ref attachment 1)) + +(define-integrable (mime-attachment-parameters attachment) + (vector-ref attachment 2)) + +(define-integrable (mime-attachment-disposition attachment) + (vector-ref attachment 3)) + +(define-integrable (mime-attachment-message-headers attachment) + (vector-ref attachment 4)) + +(define-integrable (mime-attachment-message-body attachment) + (vector-ref attachment 5)) + +(define-integrable (mime-attachment-pathname attachment) + (vector-ref attachment 4)) (define (mime-parameters->string parameters) (decorated-string-append @@ -1022,6 +1069,254 @@ the user from the mailer." (set-string-maximum-length! s n)) s))) +;;;; Attachment browser + +(define-command mail-browse-attachments + "Visit a buffer showing a list of the MIME attachments for this message. +You can add and delete attachments from that buffer." + () + (lambda () + (select-buffer (mail-mime-attachments-browser (selected-buffer))))) + +(define (mail-mime-attachments-browser mail-buffer) + (let ((buffer (get-mime-attachments-buffer mail-buffer #t))) + (rebuild-mime-attachments-buffer buffer) + buffer)) + +(define (get-mime-attachments-buffer mail-buffer intern?) + (or (let ((buffer + (buffer-get mail-buffer 'MIME-ATTACHMENTS-BROWSER #f))) + (and buffer + (if (buffer-alive? buffer) + buffer + (begin + (buffer-remove! mail-buffer 'MIME-ATTACHMENTS-BROWSER) + #f)))) + (and intern? + (let ((buffer + (new-buffer + (string-append (buffer-name mail-buffer) + "-attachments")))) + (buffer-put! mail-buffer 'MIME-ATTACHMENTS-BROWSER buffer) + (buffer-put! buffer 'MAIL-BUFFER mail-buffer) + buffer)))) + +(define (rebuild-mime-attachments-buffer buffer) + (buffer-widen! buffer) + (with-read-only-defeated (buffer-start buffer) + (lambda () + (fill-mime-attachments-buffer buffer))) + (set-buffer-major-mode! buffer (ref-mode-object mime-attachments)) + (buffer-not-modified! buffer) + (set-buffer-point! buffer (line-start (buffer-start buffer) 2 'ERROR))) + +(define (fill-mime-attachments-buffer buffer) + (let ((mail-buffer (buffer-get buffer 'MAIL-BUFFER #f))) + (if (not (and mail-buffer (buffer-alive? mail-buffer))) + (error "Missing mail buffer:" buffer)) + (region-delete! (buffer-region buffer)) + (let ((mark (mark-left-inserting-copy (buffer-start buffer)))) + (insert-string-pad-right "Type" 30 #\space mark) + (insert-char #\space mark) + (insert-string "Filename" mark) + (insert-newline mark) + (insert-chars #\- 30 mark) + (insert-char #\space mark) + (insert-chars #\- + (max 8 (- (mark-x-size mark) (+ (mark-column mark) 1))) + mark) + (insert-newline mark) + (for-each (lambda (attachment) + (write-mime-attachment-line attachment mark)) + (buffer-mime-attachments mail-buffer)) + (mark-temporary! mark)))) + +(define (write-mime-attachment-line attachment mark) + (let ((start (mark-right-inserting-copy mark)) + (type (mime-attachment-type attachment)) + (subtype (mime-attachment-subtype attachment))) + (insert-string-pad-right (string-append (symbol->string type) + "/" + (symbol->string subtype)) + 30 #\space mark) + (if (not (and (eq? type 'MESSAGE) (eq? subtype 'RFC822))) + (begin + (insert-char #\space mark) + (insert-string + (->namestring (mime-attachment-pathname attachment)) + mark))) + (insert-newline mark) + (region-put! start mark 'MIME-ATTACHMENT attachment) + (mark-temporary! start))) + +(define-major-mode mime-attachments read-only "MIME Attachments" + "Major mode for browsing MIME mail attachments. +Commands available in this mode: + +\\{mime-attachments}" + (lambda (buffer) + (buffer-put! buffer 'REVERT-BUFFER-METHOD mime-attachments-revert-buffer) + (add-kill-buffer-hook buffer mime-attachments-kill-buffer) + (local-set-variable! truncate-lines #t buffer) + (local-set-variable! mode-line-modified "--- " buffer) + (set-buffer-read-only! buffer) + (disable-group-undo! (buffer-group buffer)) + (event-distributor/invoke! (ref-variable mime-attachments-mode-hook buffer) + buffer))) + +(define-variable mime-attachments-mode-hook + "An event distributor that is invoked when entering MIME Attachments mode." + (make-event-distributor)) + +(define-key 'mime-attachments #\+ 'add-mime-file-attachment) +(define-key 'mime-attachments #\- 'kill-mime-attachment) +(define-key 'mime-attachments #\? 'describe-mode) +(define-key 'mime-attachments #\q 'mime-attachments-quit) + +(define (mime-attachments-revert-buffer buffer + dont-use-auto-save? dont-confirm?) + dont-use-auto-save? + (if (or dont-confirm? (prompt-for-yes-or-no? "Revert attachments buffer")) + (rebuild-mime-attachments-buffer buffer))) + +(define (mime-attachments-kill-buffer buffer) + (let ((mail-buffer (buffer-get buffer 'MAIL-BUFFER #f))) + (if mail-buffer + (buffer-remove! mail-buffer 'MIME-ATTACHMENTS-BROWSER)))) + +(define (selected-mail-buffer) + (let ((buffer (selected-buffer))) + (or (buffer-get buffer 'MAIL-BUFFER #f) + buffer))) + +(define-command add-mime-file-attachment + "Add a file as a MIME attachment to the current mail message." + "FFile to attach" + (lambda (pathname) + (let ((mail-buffer (selected-mail-buffer))) + (let ((attachment + (call-with-values + (lambda () (pathname->mime-type pathname mail-buffer)) + (lambda (type subtype parameters) + (add-buffer-mime-attachment! + mail-buffer type subtype parameters + `(,(if (eq? type 'TEXT) + 'INLINE + 'ATTACHMENT) + (FILENAME ,(file-namestring pathname))) + pathname))))) + (let ((buffer (get-mime-attachments-buffer mail-buffer #f))) + (if buffer + (let ((mark (mark-left-inserting-copy (buffer-end buffer)))) + (with-read-only-defeated mark + (lambda () + (write-mime-attachment-line attachment mark))) + (mark-temporary! mark)))))))) + +(define-command kill-mime-attachment + "Delete the MIME attachment that point is on." + () + (lambda () + (let ((point (current-point))) + (let ((attachment (region-get point 'MIME-ATTACHMENT #f))) + (if (not attachment) + (editor-error "No attachment on current line.")) + (if (prompt-for-yes-or-no? "Delete attachment") + (begin + (delete-buffer-mime-attachment! (selected-mail-buffer) + attachment) + (with-read-only-defeated point + (lambda () + (delete-string (line-start point 0) + (line-start point 1 'ERROR)))))))))) + +(define-command mime-attachments-quit + "Delete the MIME attachments buffer, returning to the message buffer." + () + (lambda () + (let ((buffer (selected-buffer))) + (let ((mail-buffer (buffer-get buffer 'MAIL-BUFFER #f))) + (if (not mail-buffer) + (editor-error "No mail buffer found!")) + (select-buffer mail-buffer)) + (kill-buffer-interactive buffer)))) + +(define (pathname->mime-type pathname buffer) + (let ((type (pathname-type pathname)) + (finish + (lambda (type subtype) + (values type + subtype + (if (eq? type 'TEXT) + '((CHARSET "iso-8859-1")) + '()))))) + (let ((entry + (list-search-positive (ref-variable file-type-to-mime-type buffer) + (lambda (entry) + (if type + (string-ci=? (car entry) type) + (not (car entry))))))) + (if entry + (finish (cadr entry) (caddr entry)) + (let ((ts (search-mime-types-file pathname))) + (if ts + (finish (car ts) (cadr ts)) + (let ((type + (prompt-for-alist-value "MIME type" + mime-top-level-types + #f + #t))) + (finish type + (string->symbol + (prompt-for-string "MIME subtype" #f)))))))))) + +(define (search-mime-types-file pathname) + (let ((filename (file-namestring pathname))) + (call-with-input-file (system-library-pathname "edwin/etc/mime.types") + (lambda (port) + (let loop () + (let ((line (read-line port))) + (and (not (eof-object? port)) + (let ((line (string-trim line))) + (if (or (string-null? line) + (char=? (string-ref line 0) #\#)) + (loop) + (let ((tokens + (burst-string line char-set:whitespace #t))) + (if (there-exists? (cdr tokens) + (lambda (suffix) + (string-suffix-ci? (string-append "." suffix) + filename))) + (map intern + (burst-string (car tokens) #\/ #f)) + (loop)))))))))))) + +(define-variable file-type-to-mime-type + "Specifies the MIME type/subtype for files with a given type. +This is a list, each element of which is a list of three items: +1. The file type as a string, e.g. \"jpg\". + This can also be #F for files with no type. +2. The MIME type, one of the following symbols: + TEXT IMAGE AUDIO VIDEO APPLICATION +3. The MIME subtype, also specified as a symbol." + '(("scm" TEXT X-SCHEME) + ("text" TEXT PLAIN) + ("txi" TEXT X-TEXINFO)) + (lambda (x) + (list-of-type? x + (lambda (x) + (and (list? x) + (= (length x) 3) + (or (not (car x)) (string? (car x))) + (there-exists? mime-top-level-types + (lambda (e) + (eq? (cdr e) (cadr x)))) + (symbol? (caddr x))))))) + +(define mime-top-level-types + (map (lambda (s) (cons (symbol->string s) s)) + '(TEXT IMAGE AUDIO VIDEO APPLICATION))) + ;;;; Direct SMTP (define (smtp-mail-buffer mail-buffer lookup-buffer) -- 2.25.1