;;; nnheader.el --- header access macros for Semi-gnus and its backends
;; Copyright (C) 1987, 1988, 1989, 1990, 1993, 1994, 1995, 1996,
-;; 1997, 1998, 2000
+;; 1997, 1998, 2000, 2001
;; Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
-;; Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Katsumi Yamaoka <yamaoka@jpl.org>
;; Keywords: mail, news, MIME
(eval-when-compile (require 'cl))
(eval-when-compile (require 'static))
+;; Requiring `gnus-util' at compile time creates a circular
+;; dependency between nnheader.el and gnus-util.el.
+;(eval-when-compile (require 'gnus-util))
+
(require 'mail-utils)
+
+;; Reduce the required value of `recursive-load-depth-limit' for Emacs 21.
+(require 'pces)
+(require 'poem)
+(require 'std11)
+
(require 'mime)
(eval-and-compile
+ (autoload 'gnus-sorted-intersection "gnus-range")
(autoload 'gnus-intersection "gnus-range")
(autoload 'gnus-sorted-complement "gnus-range"))
+(defcustom gnus-verbose-backends 7
+ "Integer that says how verbose the Gnus backends should be.
+The higher the number, the more messages the Gnus backends will flash
+to say what it's doing. At zero, the Gnus backends will be totally
+mute; at five, they will display most important messages; and at ten,
+they will keep on jabbering all the time."
+ :group 'gnus-start
+ :type 'integer)
+
+(defcustom gnus-nov-is-evil nil
+ "If non-nil, Gnus backends will never output headers in the NOV format."
+ :group 'gnus-server
+ :type 'boolean)
+
(defvar nnheader-max-head-length 4096
- "*Max length of the head of articles.")
+ "*Max length of the head of articles.
+
+Value is an integer, nil, or t. nil means read in chunks of a file
+indefinitely until a complete head is found\; t means always read the
+entire file immediately, disregarding `nnheader-head-chop-length'.
+
+Integer values will in effect be rounded up to the nearest multiple of
+`nnheader-head-chop-length'.")
(defvar nnheader-head-chop-length 2048
"*Length of each read operation when trying to fetch HEAD headers.")
(autoload 'mail-position-on-field "sendmail")
(autoload 'message-remove-header "message")
(autoload 'gnus-point-at-eol "gnus-util")
- (autoload 'gnus-delete-line "gnus-util")
(autoload 'gnus-buffer-live-p "gnus-util"))
;;; Header access macros.
(defsubst nnheader-header-value ()
(let ((pt (point)))
- (prog1
- (buffer-substring (match-end 0) (std11-field-end))
+ (prog2
+ (skip-chars-forward " \t")
+ (buffer-substring (point) (std11-field-end))
(goto-char pt))))
(defun nnheader-parse-head (&optional naked)
;; Subject.
(progn
(goto-char p)
- (if (search-forward "\nsubject: " nil t)
+ (if (search-forward "\nsubject:" nil t)
(nnheader-header-value) "(none)"))
;; From.
(progn
(goto-char p)
- (if (or (search-forward "\nfrom: " nil t)
- (search-forward "\nfrom:" nil t))
+ (if (search-forward "\nfrom:" nil t)
(nnheader-header-value) "(nobody)"))
;; Date.
(progn
(goto-char p)
- (if (search-forward "\ndate: " nil t)
+ (if (search-forward "\ndate:" nil t)
(nnheader-header-value) ""))
;; Message-ID.
(progn
;; References.
(progn
(goto-char p)
- (if (search-forward "\nreferences: " nil t)
+ (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)
+ (if (and (search-forward "\nin-reply-to:" nil t)
(setq in-reply-to (nnheader-header-value))
(string-match "<[^\n>]+>" in-reply-to))
(let (ref2)
(match-end 0)))
(when (> (length ref2) (length ref))
(setq ref ref2)))
- ref)
+ ref)
nil)))
;; Chars.
0
;; Xref.
(progn
(goto-char p)
- (and (search-forward "\nxref: " nil t)
+ (and (search-forward "\nxref:" nil t)
(nnheader-header-value)))
;; Extra.
(while extra
(goto-char p)
(when (search-forward
- (concat "\n" (symbol-name (car extra)) ": ") nil t)
+ (concat "\n" (symbol-name (car extra)) ":") nil t)
(push (cons (car extra) (nnheader-header-value))
out))
(pop extra))
(setq prev (point))
(while (and (not (numberp (setq num (read cur))))
(not (eobp)))
- (gnus-delete-line))
+ (delete-region (progn (beginning-of-line) (point))
+ (progn (forward-line 1) (point))))
(cond ((> num article)
(setq max (point)))
((< num article)
(defvar nntp-server-buffer nil)
(defvar nntp-process-response nil)
-(defvar gnus-verbose-backends 7
- "*A number that says how talkative the Gnus backends should be.")
-(defvar gnus-nov-is-evil nil
- "If non-nil, Gnus backends will never output headers in the NOV format.")
(defvar news-reply-yank-from nil)
(defvar news-reply-yank-message-id nil)
(string-match nnheader-numerical-short-files file)
(string-to-int (match-string 0 file))))
-(defvar nnheader-directory-files-is-safe nil
+(defvar nnheader-directory-files-is-safe
+ (or (eq system-type 'windows-nt)
+ (and (not (featurep 'xemacs))
+ (> emacs-major-version 20)))
"If non-nil, Gnus believes `directory-files' is safe.
It has been reported numerous times that `directory-files' fails with
an alarming frequency on NFS mounted file systems. If it is nil,
(defun nnheader-directory-articles (dir)
"Return a list of all article files in directory DIR."
(mapcar 'nnheader-file-to-number
- (if nnheader-directory-files-is-safe
+ (if nnheader-directory-files-is-safe
(directory-files
dir nil nnheader-numerical-short-files t)
(nnheader-directory-files-safe
(defun nnheader-article-to-file-alist (dir)
"Return an alist of article/file pairs in DIR."
(mapcar (lambda (file) (cons (nnheader-file-to-number file) file))
- (if nnheader-directory-files-is-safe
+ (if nnheader-directory-files-is-safe
(directory-files
dir nil nnheader-numerical-short-files t)
(nnheader-directory-files-safe
;; We translate -- but only the file name. We leave the directory
;; alone.
(if (and (featurep 'xemacs)
- (memq system-type '(win32 w32 mswindows windows-nt)))
+ (memq system-type '(cygwin32 win32 w32 mswindows windows-nt)))
;; This is needed on NT and stuff, because
;; file-name-nondirectory is not enough to split
;; file names, containing ':', e.g.
;; "d:\\Work\\News\\nntp+news.fido7.ru:fido7.ru.gnu.SCORE"
- ;;
+ ;;
;; we are trying to correctly split such names:
;; "d:file.name" -> "a:" "file.name"
;; "aaa:bbb.ccc" -> "" "aaa:bbb.ccc"
(auto-mode-alist (nnheader-auto-mode-alist))
(default-major-mode 'fundamental-mode)
(enable-local-variables nil)
- (after-insert-file-functions nil)
+ (after-insert-file-functions nil)
(enable-local-eval nil)
(find-file-hooks nil))
(insert-file-contents-as-coding-system
(defalias 'nnheader-run-at-time 'run-at-time)
(defalias 'nnheader-cancel-timer 'cancel-timer)
(defalias 'nnheader-cancel-function-timers 'cancel-function-timers)
+(defalias 'nnheader-string-as-multibyte 'string-as-multibyte)
(defun nnheader-Y-or-n-p (prompt)
"Ask user a \"Y/n\" question. Return t if answer is neither \"n\", \"N\" nor \"C-g\"."
(message "%s(Y/n) Yes" prompt)
t)))
+;; mm- stuff.
+(unless (featurep 'mm-util)
+ (defun nnheader-image-load-path (&optional package)
+ (let (dir result)
+ (dolist (path load-path (nreverse result))
+ (if (file-directory-p
+ (setq dir (concat (file-name-directory
+ (directory-file-name path))
+ "etc/" (or package "gnus/"))))
+ (push dir result))
+ (push path result))))
+ (defalias 'mm-image-load-path 'nnheader-image-load-path)
+
+ (defalias 'mm-read-coding-system
+ (if (or (and (featurep 'xemacs)
+ (<= (string-to-number emacs-version) 21.1))
+ (boundp 'MULE))
+ (lambda (prompt &optional default-coding-system)
+ (read-coding-system prompt))
+ 'read-coding-system))
+
+ (defalias 'mm-multibyte-string-p
+ (if (fboundp 'multibyte-string-p)
+ 'multibyte-string-p
+ 'ignore))
+
+ (defun nnheader-detect-coding-region (start end)
+ "Like 'detect-coding-region' except returning the best one."
+ (let ((coding-systems
+ (static-if (boundp 'MULE)
+ (code-detect-region (point) (point-max))
+ (detect-coding-region (point) (point-max)))))
+ (or (car-safe coding-systems)
+ coding-systems)))
+ (defalias 'mm-detect-coding-region 'nnheader-detect-coding-region)
+
+ (defun nnheader-detect-mime-charset-region (start end)
+ "Detect MIME charset of the text in the region between START and END."
+ (coding-system-to-mime-charset
+ (nnheader-detect-coding-region start end)))
+ (defalias 'mm-detect-mime-charset-region 'nnheader-detect-mime-charset-region))
+
+;; mail-parse stuff.
+(unless (featurep 'mail-parse)
+ (defun-maybe std11-narrow-to-field ()
+ "Narrow the buffer to the header on the current line."
+ (forward-line 0)
+ (narrow-to-region (point)
+ (progn
+ (std11-field-end)
+ (when (eolp) (forward-line 1))
+ (point)))
+ (goto-char (point-min)))
+
+ (defalias 'mail-header-narrow-to-field 'std11-narrow-to-field)
+
+ (defun mail-narrow-to-head ()
+ "Narrow to the header section in the current buffer."
+ (narrow-to-region
+ (goto-char (point-min))
+ (if (re-search-forward "^\r?$" nil 1)
+ (match-beginning 0)
+ (point-max)))
+ (goto-char (point-min)))
+
+ (defun-maybe std11-fold-region (b e)
+ "Fold long lines in region B to E."
+ (save-restriction
+ (narrow-to-region b e)
+ (goto-char (point-min))
+ (let ((break nil)
+ (qword-break nil)
+ (first t)
+ (bol (save-restriction
+ (widen)
+ (gnus-point-at-bol))))
+ (while (not (eobp))
+ (when (and (or break qword-break)
+ (> (- (point) bol) 76))
+ (goto-char (or break qword-break))
+ (setq break nil
+ qword-break nil)
+ (if (looking-at "[ \t]")
+ (insert "\n")
+ (insert "\n "))
+ (setq bol (1- (point)))
+ ;; Don't break before the first non-LWSP characters.
+ (skip-chars-forward " \t")
+ (unless (eobp)
+ (forward-char 1)))
+ (cond
+ ((eq (char-after) ?\n)
+ (forward-char 1)
+ (setq bol (point)
+ break nil
+ qword-break nil)
+ (skip-chars-forward " \t")
+ (unless (or (eobp) (eq (char-after) ?\n))
+ (forward-char 1)))
+ ((eq (char-after) ?\r)
+ (forward-char 1))
+ ((memq (char-after) '(? ?\t))
+ (skip-chars-forward " \t")
+ (if first
+ ;; Don't break just after the header name.
+ (setq first nil)
+ (setq break (1- (point)))))
+ ((not break)
+ (if (not (looking-at "=\\?[^=]"))
+ (if (eq (char-after) ?=)
+ (forward-char 1)
+ (skip-chars-forward "^ \t\n\r="))
+ (setq qword-break (point))
+ (skip-chars-forward "^ \t\n\r")))
+ (t
+ (skip-chars-forward "^ \t\n\r"))))
+ (when (and (or break qword-break)
+ (> (- (point) bol) 76))
+ (goto-char (or break qword-break))
+ (setq break nil
+ qword-break nil)
+ (if (looking-at "[ \t]")
+ (insert "\n")
+ (insert "\n "))
+ (setq bol (1- (point)))
+ ;; Don't break before the first non-LWSP characters.
+ (skip-chars-forward " \t")
+ (unless (eobp)
+ (forward-char 1))))))
+
+ (defun-maybe std11-fold-field ()
+ "Fold the current line."
+ (save-excursion
+ (save-restriction
+ (std11-narrow-to-field)
+ (std11-fold-region (point-min) (point-max)))))
+
+ (defalias 'mail-header-fold-field 'std11-fold-field)
+
+ (defun-maybe std11-extract-addresses-components (string)
+ "Extract a list of full name and canonical address from STRING. Each
+element looks like a list of the form (FULL-NAME CANONICAL-ADDRESS).
+If no name can be extracted, FULL-NAME will be nil."
+ (when string
+ (mapcar (function
+ (lambda (structure)
+ (list (std11-full-name-string structure)
+ (std11-address-string structure))))
+ (std11-parse-addresses-string (std11-unfold-string string)))))
+
+ (defun mail-header-parse-addresses (string)
+ "Parse STRING and return a list of MAILBOX / DISPLAY-NAME pairs."
+ (mapcar (function
+ (lambda (components)
+ (cons (nth 1 components) (car components))))
+ (std11-extract-addresses-components string)))
+
+ (defun-maybe std11-field-value (&optional dont-include-last-newline)
+ "Return the value of the field at point. If the optional argument is
+given, the return value will not contain the last newline."
+ (let ((begin (point))
+ (inhibit-point-motion-hooks t)
+ start value)
+ (beginning-of-line)
+ (unless (eobp)
+ (while (and (memq (char-after) '(?\t ?\ ))
+ (zerop (forward-line -1))))
+ (when (looking-at ".+:[\t\n ]+")
+ (goto-char (setq start (match-end 0)))
+ (forward-line 1)
+ (while (and (memq (char-after) '(?\t ?\ ))
+ (zerop (forward-line 1))))
+ (when dont-include-last-newline
+ (skip-chars-backward "\t\n " start))
+ (setq value (buffer-substring start (point)))))
+ (goto-char begin)
+ value))
+
+ (defalias 'mail-header-field-value 'std11-field-value))
+
(when (featurep 'xemacs)
(require 'nnheaderxm))
projects / elisp / gnus.git- / blobdiff