(defvar nnheader-max-head-length 4096
"*Max length of the head of articles.")
+(defvar nnheader-head-chop-length 2048
+ "*Length of each read operation when trying to fetch HEAD headers.")
+
(defvar nnheader-file-name-translation-alist nil
"*Alist that says how to translate characters in file names.
For instance, if \":\" is illegal as a file character in file names
(let ((case-fold-search t)
(cur (current-buffer))
(buffer-read-only nil)
- end ref in-reply-to lines p)
+ in-reply-to lines p)
(goto-char (point-min))
(when naked
(insert "\n"))
- ;; Search to the beginning of the next header. Error messages
+ ;; Search to the beginning of the next header. Error messages
;; do not begin with 2 or 3.
(prog1
(when (or naked (re-search-forward "^[23][0-9]+ " nil t))
(goto-char (point-min))
(delete-char 1)))))
+(defmacro nnheader-nov-skip-field ()
+ '(search-forward "\t" eol 'move))
+
+(defmacro nnheader-nov-field ()
+ '(buffer-substring (point) (if (nnheader-nov-skip-field) (1- (point)) eol)))
+
+(defmacro nnheader-nov-read-integer ()
+ '(prog1
+ (if (= (following-char) ?\t)
+ 0
+ (let ((num (condition-case nil (read (current-buffer)) (error nil))))
+ (if (numberp num) num 0)))
+ (or (eobp) (forward-char 1))))
+
+(defvar nnheader-none-counter 0)
+
+(defun nnheader-parse-nov ()
+ (let ((eol (gnus-point-at-eol)))
+ (vector
+ (nnheader-nov-read-integer) ; number
+ (nnheader-nov-field) ; subject
+ (nnheader-nov-field) ; from
+ (nnheader-nov-field) ; date
+ (or (nnheader-nov-field)
+ (concat "none+"
+ (int-to-string
+ (incf nnheader-none-counter)))) ; id
+ (nnheader-nov-field) ; refs
+ (nnheader-nov-read-integer) ; chars
+ (nnheader-nov-read-integer) ; lines
+ (if (= (following-char) ?\n)
+ nil
+ (nnheader-nov-field)) ; misc
+ )))
+
(defun nnheader-insert-nov (header)
(princ (mail-header-number header) (current-buffer))
(insert
(forward-char -1)
(insert "."))
+(defun nnheader-nov-delete-outside-range (beg end)
+ "Delete all NOV lines that lie outside the BEG to END range."
+ ;; First we find the first wanted line.
+ (nnheader-find-nov-line beg)
+ (delete-region (point-min) (point))
+ ;; Then we find the last wanted line.
+ (when (nnheader-find-nov-line end)
+ (forward-line 1))
+ (delete-region (point) (point-max)))
+
+(defun nnheader-find-nov-line (article)
+ "Put point at the NOV line that start with ARTICLE.
+If ARTICLE doesn't exist, put point where that line
+would have been. The function will return non-nil if
+the line could be found."
+ ;; This function basically does a binary search.
+ (let ((max (point-max))
+ (min (goto-char (point-min)))
+ (cur (current-buffer))
+ (prev (point-min))
+ num found)
+ (while (not found)
+ (goto-char (/ (+ max min) 2))
+ (beginning-of-line)
+ (if (or (= (point) prev)
+ (eobp))
+ (setq found t)
+ (setq prev (point))
+ (cond ((> (setq num (read cur)) article)
+ (setq max (point)))
+ ((< num article)
+ (setq min (point)))
+ (t
+ (setq found 'yes)))))
+ ;; Now we may have found the article we're looking for, or we
+ ;; may be somewhere near it.
+ (when (and (not (eq found 'yes))
+ (not (eq num article)))
+ (setq found (point))
+ (while (and (< (point) max)
+ (or (not (numberp num))
+ (< num article)))
+ (forward-line 1)
+ (setq found (point))
+ (or (eobp)
+ (= (setq num (read cur)) article)))
+ (unless (eq num article)
+ (goto-char found)))
+ (beginning-of-line)
+ (eq num article)))
+
;; Various cruft the backends and Gnus need to communicate.
(defvar nntp-server-buffer nil)
(nnheader-insert-file-contents-literally file)
;; Read 1K blocks until we find a separator.
(let ((beg 0)
- format-alist
- (chop 1024))
- (while (and (eq chop (nth 1 (insert-file-contents
- file nil beg (incf beg chop))))
+ format-alist)
+ (while (and (eq nnheader-head-chop-length
+ (nth 1 (nnheader-insert-file-contents-literally
+ file nil beg
+ (incf beg nnheader-head-chop-length))))
(prog1 (not (search-forward "\n\n" nil t))
(goto-char (point-max)))
(or (null nnheader-max-head-length)
(defun nnheader-insert-references (references message-id)
"Insert a References header based on REFERENCES and MESSAGE-ID."
(if (and (not references) (not message-id))
- () ; This is illegal, but not all articles have Message-IDs.
+ () ; This is illegal, but not all articles have Message-IDs.
(mail-position-on-field "References")
(let ((begin (save-excursion (beginning-of-line) (point)))
(fill-column 78)
(error (message ""))))
(defun nnheader-insert (format &rest args)
- "Clear the communicaton buffer and insert FORMAT and ARGS into the buffer.
+ "Clear the communication buffer and insert FORMAT and ARGS into the buffer.
If FORMAT isn't a format string, it and all ARGS will be inserted
without formatting."
(save-excursion
(or (and (symbolp form) (fboundp form))
(and (listp form) (eq (car form) 'lambda))))
-(defun nnheader-concat (dir file)
+(defun nnheader-concat (dir &rest files)
"Concat DIR as directory to FILE."
- (concat (file-name-as-directory dir) file))
+ (apply 'concat (file-name-as-directory dir) files))
(defun nnheader-ms-strip-cr ()
"Strip ^M from the end of all lines."
"Return the file size of FILE or 0."
(or (nth 7 (file-attributes file)) 0))
-(defun nnheader-find-etc-directory (package)
- "Go through the path and find the \".../etc/PACKAGE\" directory."
+(defun nnheader-find-etc-directory (package &optional file)
+ "Go through the path and find the \".../etc/PACKAGE\" directory.
+If FILE, find the \".../etc/PACKAGE\" file instead."
(let ((path load-path)
dir result)
;; We try to find the dir by looking at the load path,
(setq dir (concat
(file-name-directory
(directory-file-name (car path)))
- "etc/" package "/")))
- (file-directory-p dir))
+ "etc/" package
+ (if file "" "/"))))
+ (or file (file-directory-p dir)))
(setq result dir
path nil)
(setq path (cdr path))))
(defvar efs-path-regexp)
(defun nnheader-re-read-dir (path)
"Re-read directory PATH if PATH is on a remote system."
- (if (and (fboundp 'efs-re-read-dir) (boundp 'efs-path-regexp))
- (when (string-match efs-path-regexp path)
- (efs-re-read-dir path))
- (if (and (fboundp 'ange-ftp-re-read-dir) (boundp 'ange-ftp-path-format))
- (when (string-match (car ange-ftp-path-format) path)
- (ange-ftp-re-read-dir path)))))
+ (if (and (fboundp 'efs-re-read-dir) (boundp 'efs-path-regexp))
+ (when (string-match efs-path-regexp path)
+ (efs-re-read-dir path))
+ (if (and (fboundp 'ange-ftp-re-read-dir) (boundp 'ange-ftp-path-format))
+ (when (string-match (car ange-ftp-path-format) path)
+ (ange-ftp-re-read-dir path)))))
+
+(defun nnheader-insert-file-contents-literally (filename &optional visit beg end replace)
+ "Like `insert-file-contents', q.v., but only reads in the file.
+A buffer may be modified in several ways after reading into the buffer due
+to advanced Emacs features, such as file-name-handlers, format decoding,
+find-file-hooks, etc.
+ This function ensures that none of these modifications will take place."
+ (let ((format-alist nil)
+ (after-insert-file-functions nil))
+ (insert-file-contents filename visit beg end replace)))
(fset 'nnheader-run-at-time 'run-at-time)
(fset 'nnheader-cancel-timer 'cancel-timer)
(fset 'nnheader-cancel-function-timers 'cancel-function-timers)
(fset 'nnheader-find-file-noselect 'find-file-noselect)
-(fset 'nnheader-insert-file-contents-literally
- 'insert-file-contents-literally)
(when (string-match "XEmacs\\|Lucid" emacs-version)
(require 'nnheaderxm))
projects / gnus / blobdiff