;;; nnheader.el --- header access macros for Gnus and its backends
;; Copyright (C) 1987, 1988, 1989, 1990, 1993, 1994, 1995, 1996,
-;; 1997, 1998, 2000, 2001
+;; 1997, 1998, 2000, 2001, 2002, 2003
;; Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
-;; Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;; Requiring `gnus-util' at compile time creates a circular
;; dependency between nnheader.el and gnus-util.el.
- ;(eval-when-compile (require 'gnus-util))
+;;(eval-when-compile (require 'gnus-util))
(require 'mail-utils)
(require 'mm-util)
(eval-and-compile
(autoload 'gnus-sorted-intersection "gnus-range")
(autoload 'gnus-intersection "gnus-range")
- (autoload 'gnus-sorted-complement "gnus-range"))
+ (autoload 'gnus-sorted-complement "gnus-range")
+ (autoload 'gnus-sorted-difference "gnus-range"))
(defcustom gnus-verbose-backends 7
"Integer that says how verbose the Gnus backends should be.
(defvar nnheader-head-chop-length 2048
"*Length of each read operation when trying to fetch HEAD headers.")
-(defvar nnheader-file-name-translation-alist nil
+(defvar nnheader-file-name-translation-alist
+ (let ((case-fold-search t))
+ (cond
+ ((string-match "windows-nt\\|os/2\\|emx\\|cygwin"
+ (symbol-name system-type))
+ (append (mapcar (lambda (c) (cons c ?_))
+ '(?: ?* ?\" ?< ?> ??))
+ (if (string-match "windows-nt\\|cygwin"
+ (symbol-name system-type))
+ nil
+ '((?+ . ?-)))))
+ (t nil)))
"*Alist that says how to translate characters in file names.
For instance, if \":\" is invalid as a file character in file names
on your system, you could say something like:
\(setq nnheader-file-name-translation-alist '((?: . ?_)))")
+(defvar nnheader-directory-separator-character
+ (string-to-char (substring (file-name-as-directory ".") -1))
+ "*A character used to a directory separator.")
+
(eval-and-compile
(autoload 'nnmail-message-id "nnmail")
(autoload 'mail-position-on-field "sendmail")
;; Parsing headers and NOV lines.
+(defsubst nnheader-remove-cr-followed-by-lf ()
+ (goto-char (point-max))
+ (while (search-backward "\r\n" nil t)
+ (delete-char 1)))
+
(defsubst nnheader-header-value ()
(skip-chars-forward " \t")
(buffer-substring (point) (gnus-point-at-eol)))
-(defun nnheader-parse-head (&optional naked)
+(defun nnheader-parse-naked-head (&optional number)
+ ;; This function unfolds continuation lines in this buffer
+ ;; destructively. When this side effect is unwanted, use
+ ;; `nnheader-parse-head' instead of this function.
(let ((case-fold-search t)
- (cur (current-buffer))
(buffer-read-only nil)
- in-reply-to lines p ref)
- (goto-char (point-min))
- (when naked
- (insert "\n"))
- ;; Search to the beginning of the next header. Error messages
- ;; do not begin with 2 or 3.
+ (cur (current-buffer))
+ (p (point-min))
+ in-reply-to lines ref)
+ (nnheader-remove-cr-followed-by-lf)
+ (ietf-drums-unfold-fws)
+ (subst-char-in-region (point-min) (point-max) ?\t ? )
+ (goto-char p)
+ (insert "\n")
(prog1
- (when (or naked (re-search-forward "^[23][0-9]+ " nil t))
- ;; This implementation of this function, with nine
- ;; search-forwards instead of the one re-search-forward and
- ;; a case (which basically was the old function) is actually
- ;; about twice as fast, even though it looks messier. You
- ;; can't have everything, I guess. Speed and elegance
- ;; don't always go hand in hand.
- (vector
- ;; Number.
- (if naked
- (progn
- (setq p (point-min))
- 0)
- (prog1
- (read cur)
- (end-of-line)
- (setq p (point))
- (narrow-to-region (point)
- (or (and (search-forward "\n.\n" nil t)
- (- (point) 2))
- (point)))))
- ;; Subject.
- (progn
- (goto-char p)
- (if (search-forward "\nsubject:" nil t)
- (nnheader-header-value) "(none)"))
- ;; From.
- (progn
- (goto-char p)
- (if (search-forward "\nfrom:" nil t)
- (nnheader-header-value) "(nobody)"))
- ;; Date.
- (progn
- (goto-char p)
- (if (search-forward "\ndate:" nil t)
- (nnheader-header-value) ""))
- ;; Message-ID.
- (progn
- (goto-char p)
- (if (search-forward "\nmessage-id:" nil t)
- (buffer-substring
- (1- (or (search-forward "<" (gnus-point-at-eol) t)
- (point)))
- (or (search-forward ">" (gnus-point-at-eol) t) (point)))
- ;; If there was no message-id, we just fake one to make
- ;; subsequent routines simpler.
- (nnheader-generate-fake-message-id)))
- ;; References.
- (progn
- (goto-char p)
- (if (search-forward "\nreferences:" nil t)
- (nnheader-header-value)
- ;; Get the references from the in-reply-to header if there
- ;; were no references and the in-reply-to header looks
- ;; promising.
- (if (and (search-forward "\nin-reply-to:" nil t)
- (setq in-reply-to (nnheader-header-value))
- (string-match "<[^\n>]+>" in-reply-to))
- (let (ref2)
- (setq ref (substring in-reply-to (match-beginning 0)
- (match-end 0)))
- (while (string-match "<[^\n>]+>"
- in-reply-to (match-end 0))
- (setq ref2 (substring in-reply-to (match-beginning 0)
- (match-end 0)))
- (when (> (length ref2) (length ref))
- (setq ref ref2)))
- ref)
- nil)))
- ;; Chars.
- 0
- ;; Lines.
- (progn
- (goto-char p)
- (if (search-forward "\nlines: " nil t)
- (if (numberp (setq lines (read cur)))
- lines 0)
- 0))
- ;; Xref.
- (progn
- (goto-char p)
- (and (search-forward "\nxref:" nil t)
- (nnheader-header-value)))
-
- ;; Extra.
- (when nnmail-extra-headers
- (let ((extra nnmail-extra-headers)
- out)
- (while extra
- (goto-char p)
- (when (search-forward
- (concat "\n" (symbol-name (car extra)) ":") nil t)
- (push (cons (car extra) (nnheader-header-value))
- out))
- (pop extra))
- out))))
- (when naked
- (goto-char (point-min))
- (delete-char 1)))))
+ ;; This implementation of this function, with nine
+ ;; search-forwards instead of the one re-search-forward and a
+ ;; case (which basically was the old function) is actually
+ ;; about twice as fast, even though it looks messier. You
+ ;; can't have everything, I guess. Speed and elegance don't
+ ;; always go hand in hand.
+ (vector
+ ;; Number.
+ (or number 0)
+ ;; Subject.
+ (progn
+ (goto-char p)
+ (if (search-forward "\nsubject:" nil t)
+ (nnheader-header-value) "(none)"))
+ ;; From.
+ (progn
+ (goto-char p)
+ (if (search-forward "\nfrom:" nil t)
+ (nnheader-header-value) "(nobody)"))
+ ;; Date.
+ (progn
+ (goto-char p)
+ (if (search-forward "\ndate:" nil t)
+ (nnheader-header-value) ""))
+ ;; Message-ID.
+ (progn
+ (goto-char p)
+ (if (search-forward "\nmessage-id:" nil t)
+ (buffer-substring
+ (1- (or (search-forward "<" (gnus-point-at-eol) t)
+ (point)))
+ (or (search-forward ">" (gnus-point-at-eol) t) (point)))
+ ;; If there was no message-id, we just fake one to make
+ ;; subsequent routines simpler.
+ (nnheader-generate-fake-message-id)))
+ ;; References.
+ (progn
+ (goto-char p)
+ (if (search-forward "\nreferences:" nil t)
+ (nnheader-header-value)
+ ;; Get the references from the in-reply-to header if
+ ;; there were no references and the in-reply-to header
+ ;; looks promising.
+ (if (and (search-forward "\nin-reply-to:" nil t)
+ (setq in-reply-to (nnheader-header-value))
+ (string-match "<[^\n>]+>" in-reply-to))
+ (let (ref2)
+ (setq ref (substring in-reply-to (match-beginning 0)
+ (match-end 0)))
+ (while (string-match "<[^\n>]+>"
+ in-reply-to (match-end 0))
+ (setq ref2 (substring in-reply-to (match-beginning 0)
+ (match-end 0)))
+ (when (> (length ref2) (length ref))
+ (setq ref ref2)))
+ ref)
+ nil)))
+ ;; Chars.
+ 0
+ ;; Lines.
+ (progn
+ (goto-char p)
+ (if (search-forward "\nlines: " nil t)
+ (if (numberp (setq lines (read cur)))
+ lines 0)
+ 0))
+ ;; Xref.
+ (progn
+ (goto-char p)
+ (and (search-forward "\nxref:" nil t)
+ (nnheader-header-value)))
+ ;; Extra.
+ (when nnmail-extra-headers
+ (let ((extra nnmail-extra-headers)
+ out)
+ (while extra
+ (goto-char p)
+ (when (search-forward
+ (concat "\n" (symbol-name (car extra)) ":") nil t)
+ (push (cons (car extra) (nnheader-header-value))
+ out))
+ (pop extra))
+ out)))
+ (goto-char p)
+ (delete-char 1))))
+
+(defun nnheader-parse-head (&optional naked)
+ (let ((cur (current-buffer)) num beg end)
+ (when (if naked
+ (setq num 0
+ beg (point-min)
+ end (point-max))
+ (goto-char (point-min))
+ ;; Search to the beginning of the next header. Error
+ ;; messages do not begin with 2 or 3.
+ (when (re-search-forward "^[23][0-9]+ " nil t)
+ (end-of-line)
+ (setq num (read cur)
+ beg (point)
+ end (if (search-forward "\n.\n" nil t)
+ (- (point) 2)
+ (point)))))
+ (with-temp-buffer
+ (insert-buffer-substring cur beg end)
+ (nnheader-parse-naked-head num)))))
(defmacro nnheader-nov-skip-field ()
'(search-forward "\t" eol 'move))
(prev (point-min))
num found)
(while (not found)
- (goto-char (/ (+ max min) 2))
+ (goto-char (+ min (/ (- max min) 2)))
(beginning-of-line)
(if (or (= (point) prev)
(eobp))
(setq prev (point))
(while (and (not (numberp (setq num (read cur))))
(not (eobp)))
- (delete-region (progn (beginning-of-line) (point))
- (progn (forward-line 1) (point))))
+ (gnus-delete-line))
(cond ((> num article)
(setq max (point)))
((< num article)
;; This is invalid, but not all articles have Message-IDs.
()
(mail-position-on-field "References")
- (let ((begin (save-excursion (beginning-of-line) (point)))
+ (let ((begin (gnus-point-at-bol))
(fill-column 78)
(fill-prefix "\t"))
(when references
(point-max)))
(goto-char (point-min)))
+(defun nnheader-remove-body ()
+ "Remove the body from an article in this current buffer."
+ (goto-char (point-min))
+ (when (re-search-forward "\n\r?\n" nil t)
+ (delete-region (point) (point-max))))
+
(defun nnheader-set-temp-buffer (name &optional noerase)
"Set-buffer to an empty (possibly new) buffer called NAME with undo disabled."
(set-buffer (get-buffer-create name))
"Regexp that matches numerical file names.")
(defvar nnheader-numerical-full-files (concat "/" nnheader-numerical-files)
- "Regexp that matches numerical full file paths.")
+ "Regexp that matches numerical full file names.")
(defsubst nnheader-file-to-number (file)
"Take a FILE name and return the article number."
;; We translate -- but only the file name. We leave the directory
;; alone.
(if (and (featurep 'xemacs)
- (memq system-type '(cygwin32 win32 w32 mswindows windows-nt)))
+ (memq system-type '(cygwin32 win32 w32 mswindows windows-nt
+ cygwin)))
;; This is needed on NT and stuff, because
;; file-name-nondirectory is not enough to split
;; file names, containing ':', e.g.
(expand-file-name
(file-name-as-directory top))))
(error "")))
- ?/ ?.))
+ nnheader-directory-separator-character ?.))
(defun nnheader-message (level &rest args)
"Message if the Gnus backends are talkative."
(<= level gnus-verbose-backends)))
(defvar nnheader-pathname-coding-system 'iso-8859-1
- "*Coding system for pathname.")
+ "*Coding system for file name.")
(defun nnheader-group-pathname (group dir &optional file)
- "Make pathname for GROUP."
+ "Make file name for GROUP."
(concat
(let ((dir (file-name-as-directory (expand-file-name dir))))
;; If this directory exists, we use it directly.
(defun nnheader-ms-strip-cr ()
"Strip ^M from the end of all lines."
(save-excursion
- (goto-char (point-min))
- (while (re-search-forward "\r$" nil t)
- (delete-backward-char 1))))
+ (nnheader-remove-cr-followed-by-lf)))
(defun nnheader-file-size (file)
"Return the file size of FILE or 0."
(defun nnheader-insert-nov-file (file first)
(let ((size (nth 7 (file-attributes file)))
(cutoff (* 32 1024)))
- (if (< size cutoff)
- ;; If the file is small, we just load it.
- (nnheader-insert-file-contents file)
- ;; We start on the assumption that FIRST is pretty recent. If
- ;; not, we just insert the rest of the file as well.
- (let (current)
- (nnheader-insert-file-contents file nil (- size cutoff) size)
- (goto-char (point-min))
- (delete-region (point) (or (search-forward "\n" nil 'move) (point)))
- (setq current (ignore-errors (read (current-buffer))))
- (if (and (numberp current)
- (< current first))
- t
- (delete-region (point-min) (point-max))
- (nnheader-insert-file-contents file))))))
+ (when size
+ (if (< size cutoff)
+ ;; If the file is small, we just load it.
+ (nnheader-insert-file-contents file)
+ ;; We start on the assumption that FIRST is pretty recent. If
+ ;; not, we just insert the rest of the file as well.
+ (let (current)
+ (nnheader-insert-file-contents file nil (- size cutoff) size)
+ (goto-char (point-min))
+ (delete-region (point) (or (search-forward "\n" nil 'move) (point)))
+ (setq current (ignore-errors (read (current-buffer))))
+ (if (and (numberp current)
+ (< current first))
+ t
+ (delete-region (point-min) (point-max))
+ (nnheader-insert-file-contents file)))))))
(defun nnheader-find-file-noselect (&rest args)
(let ((format-alist nil)
projects / gnus / blobdiff