;;; nnheader.el --- header access macros for Gnus and its backends
-;; Copyright (C) 1987,88,89,90,93,94,95,96 Free Software Foundation, Inc.
+
+;; Copyright (C) 1987, 1988, 1989, 1990, 1993, 1994, 1995, 1996,
+;; 1997, 1998, 2000
+;; Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
-;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;;; Commentary:
-;; These macros may look very much like the ones in GNUS 4.1. They
-;; are, in a way, but you should note that the indices they use have
-;; been changed from the internal GNUS format to the NOV format. The
-;; makes it possible to read headers from XOVER much faster.
-;;
-;; The format of a header is now:
-;; [number subject from date id references chars lines xref]
-;;
-;; (That last entry is defined as "misc" in the NOV format, but Gnus
-;; uses it for xrefs.)
-
;;; Code:
-(require 'mail-utils)
(eval-when-compile (require 'cl))
+(require 'mail-utils)
+(require 'mm-util)
+
(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
+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 '((?: . ?_)))")
+(eval-and-compile
+ (autoload 'nnmail-message-id "nnmail")
+ (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.
+;; These macros may look very much like the ones in GNUS 4.1. They
+;; are, in a way, but you should note that the indices they use have
+;; been changed from the internal GNUS format to the NOV format. The
+;; makes it possible to read headers from XOVER much faster.
+;;
+;; The format of a header is now:
+;; [number subject from date id references chars lines xref extra]
+;;
+;; (That next-to-last entry is defined as "misc" in the NOV format,
+;; but Gnus uses it for xrefs.)
+
(defmacro mail-header-number (header)
"Return article number in HEADER."
`(aref ,header 0))
"Set article xref of HEADER to xref."
`(aset ,header 8 ,xref))
-(defun make-mail-header (&optional init)
+(defmacro mail-header-extra (header)
+ "Return the extra headers in HEADER."
+ `(aref ,header 9))
+
+(defmacro mail-header-set-extra (header extra)
+ "Set the extra headers in HEADER to EXTRA."
+ `(aset ,header 9 ',extra))
+
+(defsubst make-mail-header (&optional init)
"Create a new mail header structure initialized with INIT."
- (make-vector 9 init))
+ (make-vector 10 init))
+
+(defsubst make-full-mail-header (&optional number subject from date id
+ references chars lines xref
+ extra)
+ "Create a new mail header structure initialized with the parameters given."
+ (vector number subject from date id references chars lines xref extra))
+
+;; fake message-ids: generation and detection
+
+(defvar nnheader-fake-message-id 1)
+
+(defsubst nnheader-generate-fake-message-id ()
+ (concat "fake+none+" (int-to-string (incf nnheader-fake-message-id))))
+
+(defsubst nnheader-fake-message-id-p (id)
+ (save-match-data ; regular message-id's are <.*>
+ (string-match "\\`fake\\+none\\+[0-9]+\\'" id)))
;; Parsing headers and NOV lines.
(defsubst nnheader-header-value ()
(buffer-substring (match-end 0) (gnus-point-at-eol)))
-(defvar nnheader-newsgroup-none-id 1)
-
(defun nnheader-parse-head (&optional naked)
(let ((case-fold-search t)
(cur (current-buffer))
(buffer-read-only nil)
- end ref in-reply-to lines p)
+ in-reply-to lines p ref)
(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))
;; 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
- ;; doesn't always go hand in hand.
+ ;; don't always go hand in hand.
(vector
;; Number.
(if naked
;; Message-ID.
(progn
(goto-char p)
- (if (search-forward "\nmessage-id: " nil t)
- (nnheader-header-value)
+ (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.
- (concat "none+"
- (int-to-string
- (incf nnheader-newsgroup-none-id)))))
+ (nnheader-generate-fake-message-id)))
;; References.
(progn
(goto-char p)
;; promising.
(if (and (search-forward "\nin-reply-to: " nil t)
(setq in-reply-to (nnheader-header-value))
- (string-match "<[^>]+>" in-reply-to))
- (substring in-reply-to (match-beginning 0)
- (match-end 0))
- "")))
+ (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)
(and (search-forward "\nxref: " nil t)
- (nnheader-header-value)))))
+ (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)))))
+(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 (eq (char-after) ?\t)
+ 0
+ (let ((num (condition-case nil
+ (read (current-buffer))
+ (error nil))))
+ (if (numberp num) num 0)))
+ (or (eobp) (forward-char 1))))
+
+(defmacro nnheader-nov-parse-extra ()
+ '(let (out string)
+ (while (not (memq (char-after) '(?\n nil)))
+ (setq string (nnheader-nov-field))
+ (when (string-match "^\\([^ :]+\\): " string)
+ (push (cons (intern (match-string 1 string))
+ (substring string (match-end 0)))
+ out)))
+ out))
+
+(defmacro nnheader-nov-read-message-id ()
+ '(let ((id (nnheader-nov-field)))
+ (if (string-match "^<[^>]+>$" id)
+ id
+ (nnheader-generate-fake-message-id))))
+
+(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
+ (nnheader-nov-read-message-id) ; id
+ (nnheader-nov-field) ; refs
+ (nnheader-nov-read-integer) ; chars
+ (nnheader-nov-read-integer) ; lines
+ (if (eq (char-after) ?\n)
+ nil
+ (nnheader-nov-field)) ; misc
+ (nnheader-nov-parse-extra)))) ; extra
+
(defun nnheader-insert-nov (header)
(princ (mail-header-number header) (current-buffer))
- (insert
+ (insert
"\t"
(or (mail-header-subject header) "(none)") "\t"
(or (mail-header-from header) "(nobody)") "\t"
(or (mail-header-date header) "") "\t"
- (or (mail-header-id header)
- (nnmail-message-id)) "\t"
+ (or (mail-header-id header)
+ (nnmail-message-id))
+ "\t"
(or (mail-header-references header) "") "\t")
(princ (or (mail-header-chars header) 0) (current-buffer))
(insert "\t")
(princ (or (mail-header-lines header) 0) (current-buffer))
(insert "\t")
- (when (mail-header-xref header)
- (insert "Xref: " (mail-header-xref header) "\t"))
+ (when (mail-header-xref header)
+ (insert "Xref: " (mail-header-xref header)))
+ (when (or (mail-header-xref header)
+ (mail-header-extra header))
+ (insert "\t"))
+ (when (mail-header-extra header)
+ (let ((extra (mail-header-extra header)))
+ (while extra
+ (insert (symbol-name (caar extra))
+ ": " (cdar extra) "\t")
+ (pop extra))))
(insert "\n"))
+(defun nnheader-insert-header (header)
+ (insert
+ "Subject: " (or (mail-header-subject header) "(none)") "\n"
+ "From: " (or (mail-header-from header) "(nobody)") "\n"
+ "Date: " (or (mail-header-date header) "") "\n"
+ "Message-ID: " (or (mail-header-id header) (nnmail-message-id)) "\n"
+ "References: " (or (mail-header-references header) "") "\n"
+ "Lines: ")
+ (princ (or (mail-header-lines header) 0) (current-buffer))
+ (insert "\n\n"))
+
(defun nnheader-insert-article-line (article)
(goto-char (point-min))
(insert "220 ")
(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))
+ (while (and (not (numberp (setq num (read cur))))
+ (not (eobp)))
+ (gnus-delete-line))
+ (cond ((> num article)
+ (setq max (point)))
+ ((< num article)
+ (setq min (point)))
+ (t
+ (setq found 'yes)))))
+ ;; We may be at the first line.
+ (when (and (not num)
+ (not (eobp)))
+ (setq num (read cur)))
+ ;; 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)
(defun nnheader-init-server-buffer ()
"Initialize the Gnus-backend communication buffer."
(save-excursion
- (setq nntp-server-buffer (get-buffer-create " *nntpd*"))
+ (unless (gnus-buffer-live-p nntp-server-buffer)
+ (setq nntp-server-buffer (get-buffer-create " *nntpd*")))
+ (mm-enable-multibyte)
(set-buffer nntp-server-buffer)
- (buffer-disable-undo (current-buffer))
(erase-buffer)
(kill-all-local-variables)
(setq case-fold-search t) ;Should ignore case.
t))
-
;;; Various functions the backends use.
(defun nnheader-file-error (file)
(when (file-exists-p file)
(if (eq nnheader-max-head-length t)
;; Just read the entire file.
- (nnheader-insert-file-contents-literally file)
+ (nnheader-insert-file-contents 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))))
- (prog1 (not (search-forward "\n\n" nil t))
+ format-alist)
+ (while (and (eq nnheader-head-chop-length
+ (nth 1 (nnheader-insert-file-contents
+ 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)
(< beg nnheader-max-head-length))))))
nil
(narrow-to-region (point-min) (1- (point)))
(goto-char (point-min))
- (while (looking-at "[A-Z][^ \t]+:.*\n\\([ \t].*\n\\)*\\|From .*\n")
+ (while (looking-at "[a-zA-Z][^ \t]+:.*\n\\([ \t].*\n\\)*\\|From .*\n")
(goto-char (match-end 0)))
(prog1
(eobp)
- (widen))))
+ (widen))))
(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.
+ (if (and (not references) (not message-id))
+ ;; This is invalid, but not all articles have Message-IDs.
+ ()
(mail-position-on-field "References")
(let ((begin (save-excursion (beginning-of-line) (point)))
(fill-column 78)
(fill-prefix "\t"))
- (if references (insert references))
- (if (and references message-id) (insert " "))
- (if message-id (insert message-id))
+ (when references
+ (insert references))
+ (when (and references message-id)
+ (insert " "))
+ (when message-id
+ (insert message-id))
;; Fold long References lines to conform to RFC1036 (sort of).
;; The region must end with a newline to fill the region
;; without inserting extra newline.
(point-max)))
(goto-char (point-min)))
-(defun nnheader-set-temp-buffer (name)
+(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))
- (buffer-disable-undo (current-buffer))
- (erase-buffer)
+ (buffer-disable-undo)
+ (unless noerase
+ (erase-buffer))
(current-buffer))
-(defmacro nnheader-temp-write (file &rest forms)
- "Create a new buffer, evaluate FORM there, and write the buffer to FILE."
- `(save-excursion
- (let ((nnheader-temp-file ,file)
- (nnheader-temp-cur-buffer
- (nnheader-set-temp-buffer
- (generate-new-buffer-name " *nnheader temp*"))))
- (when (and nnheader-temp-file
- (not (file-directory-p (file-name-directory
- nnheader-temp-file))))
- (make-directory (file-name-directory nnheader-temp-file) t))
- (unwind-protect
- (prog1
- (progn
- ,@forms)
- (when nnheader-temp-file
- (set-buffer nnheader-temp-cur-buffer)
- (write-region (point-min) (point-max)
- nnheader-temp-file nil 'nomesg)))
- (when (buffer-name nnheader-temp-cur-buffer)
- (kill-buffer nnheader-temp-cur-buffer))))))
-
-(put 'nnheader-temp-write 'lisp-indent-function 1)
-(put 'nnheader-temp-write 'lisp-indent-hook 1)
-(put 'nnheader-temp-write 'edebug-form-spec '(form body))
-
-(defvar jka-compr-compression-info-list)
+(eval-when-compile (defvar jka-compr-compression-info-list))
(defvar nnheader-numerical-files
(if (boundp 'jka-compr-compression-info-list)
- (concat "\\([0-9]+\\)\\("
+ (concat "\\([0-9]+\\)\\("
(mapconcat (lambda (i) (aref i 0))
jka-compr-compression-info-list "\\|")
"\\)?")
(defsubst nnheader-file-to-number (file)
"Take a file name and return the article number."
- (if (not (boundp 'jka-compr-compression-info-list))
+ (if (string= nnheader-numerical-short-files "^[0-9]+$")
(string-to-int file)
(string-match nnheader-numerical-short-files file)
(string-to-int (match-string 0 file))))
(defun nnheader-directory-files-safe (&rest args)
;; It has been reported numerous times that `directory-files'
;; fails with an alarming frequency on NFS mounted file systems.
- ;; This function executes that function twice and returns
+ ;; This function executes that function twice and returns
;; the longest result.
(let ((first (apply 'directory-files args))
(second (apply 'directory-files args)))
(defun nnheader-fold-continuation-lines ()
"Fold continuation lines in the current buffer."
- (goto-char (point-min))
- (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
- (replace-match " " t t)))
+ (nnheader-replace-regexp "\\(\r?\n[ \t]+\\)+" " "))
-(defun nnheader-translate-file-chars (file)
+(defun nnheader-translate-file-chars (file &optional full)
+ "Translate FILE into something that can be a file name.
+If FULL, translate everything."
(if (null nnheader-file-name-translation-alist)
;; No translation is necessary.
- file
- ;; We translate -- but only the file name. We leave the directory
- ;; alone.
+ file
(let* ((i 0)
trans leaf path len)
- (if (string-match "/[^/]+\\'" file)
- ;; This is needed on NT's and stuff.
- (setq leaf (substring file (1+ (match-beginning 0)))
- path (substring file 0 (1+ (match-beginning 0))))
- ;; Fall back on this.
- (setq leaf (file-name-nondirectory file)
- path (file-name-directory file)))
+ (if full
+ ;; Do complete translation.
+ (setq leaf (copy-sequence file)
+ path ""
+ i (if (and (< 1 (length leaf)) (eq ?: (aref leaf 1)))
+ 2 0))
+ ;; We translate -- but only the file name. We leave the directory
+ ;; alone.
+ (if (string-match "/[^/]+\\'" file)
+ ;; This is needed on NT's and stuff.
+ (setq leaf (substring file (1+ (match-beginning 0)))
+ path (substring file 0 (1+ (match-beginning 0))))
+ ;; Fall back on this.
+ (setq leaf (file-name-nondirectory file)
+ path (file-name-directory file))))
(setq len (length leaf))
(while (< i len)
(when (setq trans (cdr (assq (aref leaf i)
nil)
(defun nnheader-get-report (backend)
- (message "%s" (symbol-value (intern (format "%s-status-string" backend)))))
+ "Get the most recent report from BACKEND."
+ (condition-case ()
+ (nnheader-message 5 "%s" (symbol-value (intern (format "%s-status-string"
+ backend))))
+ (error (nnheader-message 5 ""))))
(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
(apply 'insert format args))
t))
-(defun nnheader-mail-file-mbox-p (file)
- "Say whether FILE looks like an Unix mbox file."
- (when (and (file-exists-p file)
- (file-readable-p file)
- (file-regular-p file))
- (save-excursion
- (nnheader-set-temp-buffer " *mail-file-mbox-p*")
- (nnheader-insert-file-contents-literally file)
- (goto-char (point-min))
- (prog1
- (looking-at message-unix-mail-delimiter)
- (kill-buffer (current-buffer))))))
-
(defun nnheader-replace-chars-in-string (string from to)
"Replace characters in STRING from FROM to TO."
(let ((string (substring string 0)) ;Copy string.
(idx 0))
;; Replace all occurrences of FROM with TO.
(while (< idx len)
- (if (= (aref string idx) from)
- (aset string idx to))
+ (when (= (aref string idx) from)
+ (aset string idx to))
+ (setq idx (1+ idx)))
+ string))
+
+(defun nnheader-replace-duplicate-chars-in-string (string from to)
+ "Replace characters in STRING from FROM to TO."
+ (let ((string (substring string 0)) ;Copy string.
+ (len (length string))
+ (idx 0) prev i)
+ ;; Replace all occurrences of FROM with TO.
+ (while (< idx len)
+ (setq i (aref string idx))
+ (when (and (eq prev from) (= i from))
+ (aset string (1- idx) to)
+ (aset string idx to))
+ (setq prev i)
(setq idx (1+ idx)))
string))
(defun nnheader-file-to-group (file &optional top)
"Return a group name based on FILE and TOP."
- (nnheader-replace-chars-in-string
+ (nnheader-replace-chars-in-string
(if (not top)
file
(condition-case ()
(substring (expand-file-name file)
- (length
+ (length
(expand-file-name
(file-name-as-directory top))))
(error "")))
(or (not (numberp gnus-verbose-backends))
(<= level gnus-verbose-backends)))
+(defvar nnheader-pathname-coding-system 'binary
+ "*Coding system for pathname.")
+
(defun nnheader-group-pathname (group dir &optional file)
"Make pathname for GROUP."
(concat
(let ((dir (file-name-as-directory (expand-file-name dir))))
;; If this directory exists, we use it directly.
- (if (file-directory-p (concat dir group))
- (concat dir group "/")
- ;; If not, we translate dots into slashes.
- (concat dir (nnheader-replace-chars-in-string group ?. ?/) "/")))
+ (file-name-as-directory
+ (if (file-directory-p (concat dir group))
+ (expand-file-name group dir)
+ ;; If not, we translate dots into slashes.
+ (expand-file-name (mm-encode-coding-string
+ (nnheader-replace-chars-in-string group ?. ?/)
+ nnheader-pathname-coding-system)
+ dir))))
(cond ((null file) "")
((numberp file) (int-to-string file))
(t file))))
(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 (boundp 'ange-ftp-path-format)
+ (if (and (fboundp 'efs-re-read-dir) (boundp 'efs-path-regexp))
+ (when (string-match efs-path-regexp path)
+ (efs-re-read-dir path))
+ (when (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 (boundp 'efs-path-regexp)
- (when (string-match efs-path-regexp path)
- (efs-re-read-dir path)))))
-
-(fset 'nnheader-run-at-time 'run-at-time)
-(fset 'nnheader-cancel-timer 'cancel-timer)
-(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)
+ (ange-ftp-re-read-dir path)))))
+
+(defvar nnheader-file-coding-system 'raw-text
+ "Coding system used in file backends of Gnus.")
+
+(defun nnheader-insert-file-contents (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 ((coding-system-for-read nnheader-file-coding-system))
+ (mm-insert-file-contents filename visit beg end replace)))
+
+(defun nnheader-find-file-noselect (&rest args)
+ (let ((format-alist nil)
+ (auto-mode-alist (mm-auto-mode-alist))
+ (default-major-mode 'fundamental-mode)
+ (enable-local-variables nil)
+ (after-insert-file-functions nil)
+ (enable-local-eval nil)
+ (find-file-hooks nil)
+ (coding-system-for-read nnheader-file-coding-system))
+ (apply 'find-file-noselect args)))
+
+(defun nnheader-directory-regular-files (dir)
+ "Return a list of all regular files in DIR."
+ (let ((files (directory-files dir t))
+ out)
+ (while files
+ (when (file-regular-p (car files))
+ (push (car files) out))
+ (pop files))
+ (nreverse out)))
+
+(defun nnheader-directory-files (&rest args)
+ "Same as `directory-files', but prune \".\" and \"..\"."
+ (let ((files (apply 'directory-files args))
+ out)
+ (while files
+ (unless (member (file-name-nondirectory (car files)) '("." ".."))
+ (push (car files) out))
+ (pop files))
+ (nreverse out)))
+
+(defmacro nnheader-skeleton-replace (from &optional to regexp)
+ `(let ((new (generate-new-buffer " *nnheader replace*"))
+ (cur (current-buffer))
+ (start (point-min)))
+ (set-buffer cur)
+ (goto-char (point-min))
+ (while (,(if regexp 're-search-forward 'search-forward)
+ ,from nil t)
+ (insert-buffer-substring
+ cur start (prog1 (match-beginning 0) (set-buffer new)))
+ (goto-char (point-max))
+ ,(when to `(insert ,to))
+ (set-buffer cur)
+ (setq start (point)))
+ (insert-buffer-substring
+ cur start (prog1 (point-max) (set-buffer new)))
+ (copy-to-buffer cur (point-min) (point-max))
+ (kill-buffer (current-buffer))
+ (set-buffer cur)))
+
+(defun nnheader-replace-string (from to)
+ "Do a fast replacement of FROM to TO from point to point-max."
+ (nnheader-skeleton-replace from to))
+
+(defun nnheader-replace-regexp (from to)
+ "Do a fast regexp replacement of FROM to TO from point to point-max."
+ (nnheader-skeleton-replace from to t))
+
+(defun nnheader-strip-cr ()
+ "Strip all \r's from the current buffer."
+ (nnheader-skeleton-replace "\r"))
+
+(defalias 'nnheader-run-at-time 'run-at-time)
+(defalias 'nnheader-cancel-timer 'cancel-timer)
+(defalias 'nnheader-cancel-function-timers 'cancel-function-timers)
+
+(when (string-match "XEmacs" emacs-version)
(require 'nnheaderxm))
(run-hooks 'nnheader-load-hook)