- (if (eq nnimap-fetch-partial-articles t)
- (setq parts '(1))
- (nnimap-command "UID FETCH %d (BODYSTRUCTURE)" article)
- (goto-char (point-min))
- (when (re-search-forward "FETCH.*BODYSTRUCTURE" nil t)
- (let ((structure (ignore-errors (read (current-buffer)))))
- (setq parts (nnimap-find-wanted-parts structure))))))
- (setq result
- (nnimap-command
- (if (member "IMAP4REV1" (nnimap-capabilities nnimap-object))
- "UID FETCH %d BODY.PEEK[]"
- "UID FETCH %d RFC822.PEEK")
- article))
- ;; Check that we really got an article.
- (goto-char (point-min))
- (unless (looking-at "\\* [0-9]+ FETCH")
- (setq result nil)))
- (let ((buffer (nnimap-find-process-buffer (current-buffer))))
- (when (car result)
- (with-current-buffer (or to-buffer nntp-server-buffer)
- (insert-buffer-substring buffer)
- (goto-char (point-min))
- (let ((bytes (nnimap-get-length)))
- (delete-region (line-beginning-position)
- (progn (forward-line 1) (point)))
- (goto-char (+ (point) bytes))
- (delete-region (point) (point-max))
- (nnheader-ms-strip-cr))
- (cons group article))))))))
+ (nnimap-command "UID FETCH %d (BODYSTRUCTURE)" article)
+ (goto-char (point-min))
+ (when (re-search-forward "FETCH.*BODYSTRUCTURE" nil t)
+ (setq structure (ignore-errors
+ (let ((start (point)))
+ (forward-sexp 1)
+ (downcase-region start (point))
+ (goto-char (point))
+ (read (current-buffer))))
+ parts (nnimap-find-wanted-parts structure))))
+ (when (if parts
+ (nnimap-get-partial-article article parts structure)
+ (nnimap-get-whole-article article))
+ (let ((buffer (current-buffer)))
+ (with-current-buffer (or to-buffer nntp-server-buffer)
+ (erase-buffer)
+ (insert-buffer-substring buffer)
+ (nnheader-ms-strip-cr)
+ (cons group article)))))))))
+
+(defun nnimap-get-whole-article (article)
+ (let ((result
+ (nnimap-command
+ (if (nnimap-ver4-p)
+ "UID FETCH %d BODY.PEEK[]"
+ "UID FETCH %d RFC822.PEEK")
+ article)))
+ ;; Check that we really got an article.
+ (goto-char (point-min))
+ (unless (re-search-forward "\\* [0-9]+ FETCH" nil t)
+ (setq result nil))
+ (when result
+ ;; Remove any data that may have arrived before the FETCH data.
+ (beginning-of-line)
+ (unless (bobp)
+ (delete-region (point-min) (point)))
+ (let ((bytes (nnimap-get-length)))
+ (delete-region (line-beginning-position)
+ (progn (forward-line 1) (point)))
+ (goto-char (+ (point) bytes))
+ (delete-region (point) (point-max)))
+ t)))
+
+(defun nnimap-ver4-p ()
+ (member "IMAP4REV1" (nnimap-capabilities nnimap-object)))
+
+(defun nnimap-get-partial-article (article parts structure)
+ (let ((result
+ (nnimap-command
+ "UID FETCH %d (%s %s)"
+ article
+ (if (nnimap-ver4-p)
+ "BODY.PEEK[HEADER]"
+ "RFC822.HEADER")
+ (if (nnimap-ver4-p)
+ (mapconcat (lambda (part)
+ (format "BODY.PEEK[%s]" part))
+ parts " ")
+ (mapconcat (lambda (part)
+ (format "RFC822.PEEK[%s]" part))
+ parts " ")))))
+ (when result
+ (nnimap-convert-partial-article structure))))
+
+(defun nnimap-convert-partial-article (structure)
+ ;; First just skip past the headers.
+ (goto-char (point-min))
+ (let ((bytes (nnimap-get-length))
+ id parts)
+ ;; Delete "FETCH" line.
+ (delete-region (line-beginning-position)
+ (progn (forward-line 1) (point)))
+ (goto-char (+ (point) bytes))
+ ;; Collect all the body parts.
+ (while (looking-at ".*BODY\\[\\([.0-9]+\\)\\]")
+ (setq id (match-string 1)
+ bytes (nnimap-get-length))
+ (beginning-of-line)
+ (delete-region (point) (progn (forward-line 1) (point)))
+ (push (list id (buffer-substring (point) (+ (point) bytes)))
+ parts)
+ (delete-region (point) (+ (point) bytes)))
+ ;; Delete trailing junk.
+ (delete-region (point) (point-max))
+ ;; Now insert all the parts again where they fit in the structure.
+ (nnimap-insert-partial-structure structure parts)
+ t))
+
+(defun nnimap-insert-partial-structure (structure parts &optional subp)
+ (let (type boundary)
+ (let ((bstruc structure))
+ (while (consp (car bstruc))
+ (pop bstruc))
+ (setq type (car bstruc))
+ (setq bstruc (car (cdr bstruc)))
+ (when (and (stringp (car bstruc))
+ (string= (downcase (car bstruc)) "boundary"))
+ (setq boundary (cadr bstruc))))
+ (when subp
+ (insert (format "Content-type: multipart/%s; boundary=%S\n\n"
+ (downcase type) boundary)))
+ (while (not (stringp (car structure)))
+ (insert "\n--" boundary "\n")
+ (if (consp (caar structure))
+ (nnimap-insert-partial-structure (pop structure) parts t)
+ (let ((bit (pop structure)))
+ (insert (format "Content-type: %s/%s"
+ (downcase (nth 0 bit))
+ (downcase (nth 1 bit))))
+ (if (member "CHARSET" (nth 2 bit))
+ (insert (format
+ "; charset=%S\n" (cadr (member "CHARSET" (nth 2 bit)))))
+ (insert "\n"))
+ (insert (format "Content-transfer-encoding: %s\n"
+ (nth 5 bit)))
+ (insert "\n")
+ (when (assoc (nth 9 bit) parts)
+ (insert (cadr (assoc (nth 9 bit) parts)))))))
+ (insert "\n--" boundary "--\n")))
projects / gnus / blobdiff