X-Git-Url: http://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fnnheader.el;h=e0de0a4afd9f5b24dc269e4fd6c6eb4a8c356f03;hb=9954729d205c97242f0787c79dc23e7b051a6201;hp=32ed3e59ac3fd4aee0a94df38fc454dfe9a5fb03;hpb=bce0b1b80c134ef1e77af681aafccff4c919de5c;p=gnus diff --git a/lisp/nnheader.el b/lisp/nnheader.el index 32ed3e59a..e0de0a4af 100644 --- a/lisp/nnheader.el +++ b/lisp/nnheader.el @@ -1,8 +1,8 @@ ;;; 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) 1987,88,89,90,93,94,95,96,97,98 Free Software Foundation, Inc. ;; Author: Masanobu UMEDA -;; Lars Magne Ingebrigtsen +;; Lars Magne Ingebrigtsen ;; Keywords: news ;; This file is part of GNU Emacs. @@ -37,14 +37,16 @@ ;;; Code: -(require 'mail-utils) -(require 'sendmail) -(require 'rmail) (eval-when-compile (require 'cl)) +(require 'mail-utils) + (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 @@ -52,6 +54,16 @@ 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 'cancel-function-timers "timers") + (autoload 'gnus-point-at-eol "gnus-util") + (autoload 'gnus-delete-line "gnus-util") + (autoload 'gnus-buffer-live-p "gnus-util") + (autoload 'gnus-encode-coding-string "gnus-ems")) + ;;; Header access macros. (defmacro mail-header-number (header) @@ -132,6 +144,244 @@ on your system, you could say something like: "Create a new mail header structure initialized with INIT." (make-vector 9 init)) +(defun make-full-mail-header (&optional number subject from date id + references chars lines xref) + "Create a new mail header structure initialized with the parameters given." + (vector number subject from date id references chars lines xref)) + +;; 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))) + +(defun nnheader-parse-head (&optional naked) + (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. + (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 "<[^>]+>" in-reply-to)) + (let (ref2) + (setq ref (substring in-reply-to (match-beginning 0) + (match-end 0))) + (while (string-match "<[^>]+>" 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))))) + (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 (= (following-char) ?\t) + 0 + (let ((num (ignore-errors (read (current-buffer))))) + (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) + (nnheader-generate-fake-message-id)) ; 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 + "\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-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")) + (insert "\n")) + +(defun nnheader-insert-article-line (article) + (goto-char (point-min)) + (insert "220 ") + (princ article (current-buffer)) + (insert " Article retrieved.\n") + (search-forward "\n\n" nil 'move) + (delete-region (point) (point-max)) + (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) @@ -142,10 +392,13 @@ on your system, you could say something like: (defvar news-reply-yank-from nil) (defvar news-reply-yank-message-id nil) +(defvar nnheader-callback-function 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*"))) (set-buffer nntp-server-buffer) (buffer-disable-undo (current-buffer)) (erase-buffer) @@ -153,61 +406,38 @@ on your system, you could say something like: (setq case-fold-search t) ;Should ignore case. t)) -;;; Virtual server functions. - -(defun nnheader-set-init-variables (server defs) - (let ((s server) - val) - ;; First we set the server variables in the sequence required. We - ;; use the definitions from the `defs' list where that is - ;; possible. - (while s - (set (car (car s)) - (if (setq val (assq (car (car s)) defs)) - (nth 1 val) - (nth 1 (car s)))) - (setq s (cdr s))) - ;; The we go through the defs list and set any variables that were - ;; not set in the first sweep. - (while defs - (if (not (assq (car (car defs)) server)) - (set (car (car defs)) - (if (and (symbolp (nth 1 (car defs))) - (not (boundp (nth 1 (car defs))))) - (nth 1 (car defs)) - (eval (nth 1 (car defs)))))) - (setq defs (cdr defs))))) - -(defun nnheader-save-variables (server) - (let (out) - (while server - (setq out (cons (list (car (car server)) - (symbol-value (car (car server)))) - out)) - (setq server (cdr server))) - (nreverse out))) - -(defun nnheader-restore-variables (state) - (while state - (set (car (car state)) (nth 1 (car state))) - (setq state (cdr state)))) - ;;; Various functions the backends use. +(defun nnheader-file-error (file) + "Return a string that says what is wrong with FILE." + (format + (cond + ((not (file-exists-p file)) + "%s does not exist") + ((file-directory-p file) + "%s is a directory") + ((not (file-readable-p file)) + "%s is not readable")) + file)) + (defun nnheader-insert-head (file) "Insert the head of the article." - (if (eq nnheader-max-head-length t) - ;; Just read the entire file. - (insert-file-contents-literally file) - (let ((beg 0) - (chop 1024)) + (when (file-exists-p file) + (if (eq nnheader-max-head-length t) + ;; Just read the entire file. + (nnheader-insert-file-contents file) ;; Read 1K blocks until we find a separator. - (while (and (eq chop (nth 1 (insert-file-contents-literally - file nil beg (setq beg (+ chop beg))))) - (prog1 (not (search-backward "\n\n" nil t)) - (goto-char (point-max))) - (or (null nnheader-max-head-length) - (< beg nnheader-max-head-length))))))) + (let ((beg 0) + 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)))))) + t)) (defun nnheader-article-p () "Say whether the current buffer looks like an article." @@ -220,54 +450,34 @@ on your system, you could say something like: (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 illegal, 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. (fill-region-as-paragraph begin (1+ (point)))))) -(defun nnheader-remove-header (header &optional is-regexp first) - "Remove HEADER. -If FIRST, only remove the first instance if the header. -Return the number of headers removed." - (goto-char (point-min)) - (let ((regexp (if is-regexp header (concat "^" header ":"))) - (number 0) - (case-fold-search t) - last) - (while (and (re-search-forward regexp nil t) - (not last)) - (incf number) - (when first - (setq last t)) - (delete-region - (match-beginning 0) - ;; There might be a continuation header, so we have to search - ;; until we find a new non-continuation line. - (if (re-search-forward "^[^ \t]" nil t) - (match-beginning 0) - (point-max)))) - number)) - (defun nnheader-replace-header (header new-value) "Remove HEADER and insert the NEW-VALUE." (save-excursion (save-restriction (nnheader-narrow-to-headers) (prog1 - (nnheader-remove-header header) + (message-remove-header header) (goto-char (point-max)) (insert header ": " new-value "\n"))))) @@ -281,17 +491,64 @@ Return the number of headers removed." (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) + (unless noerase + (erase-buffer)) (current-buffer)) +(defmacro nnheader-temp-write (file &rest forms) + "Create a new buffer, evaluate FORMS there, and write the buffer to FILE. +Return the value of FORMS. +If FILE is nil, just evaluate FORMS and don't save anything. +If FILE is t, return the buffer contents as a string." + (let ((temp-file (make-symbol "temp-file")) + (temp-buffer (make-symbol "temp-buffer")) + (temp-results (make-symbol "temp-results"))) + `(save-excursion + (let* ((,temp-file ,file) + (default-major-mode 'fundamental-mode) + (,temp-buffer + (set-buffer + (get-buffer-create + (generate-new-buffer-name " *nnheader temp*")))) + ,temp-results) + (unwind-protect + (progn + (setq ,temp-results (progn ,@forms)) + (cond + ;; Don't save anything. + ((null ,temp-file) + ,temp-results) + ;; Return the buffer contents. + ((eq ,temp-file t) + (set-buffer ,temp-buffer) + (buffer-string)) + ;; Save a file. + (t + (set-buffer ,temp-buffer) + ;; Make sure the directory where this file is + ;; to be saved exists. + (when (not (file-directory-p + (file-name-directory ,temp-file))) + (make-directory (file-name-directory ,temp-file) t)) + ;; Save the file. + (write-region (point-min) (point-max) + ,temp-file nil 'nomesg) + ,temp-results))) + ;; Kill the buffer. + (when (buffer-name ,temp-buffer) + (kill-buffer ,temp-buffer))))))) + +(put 'nnheader-temp-write 'lisp-indent-function 1) +(put 'nnheader-temp-write 'edebug-form-spec '(form body)) + (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 "\\|") "\\)?") @@ -304,45 +561,68 @@ Return the number of headers removed." (defvar nnheader-numerical-full-files (concat "/" nnheader-numerical-files) "Regexp that matches numerical full file paths.") -(defun nnheader-file-to-number (file) +(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 + ;; the longest result. + (let ((first (apply 'directory-files args)) + (second (apply 'directory-files args))) + (if (> (length first) (length second)) + first + second))) + (defun nnheader-directory-articles (dir) "Return a list of all article files in a directory." (mapcar 'nnheader-file-to-number - (directory-files dir nil nnheader-numerical-short-files t))) + (nnheader-directory-files-safe + dir nil nnheader-numerical-short-files t))) (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)) - (directory-files dir nil nnheader-numerical-short-files t))) + (nnheader-directory-files-safe + dir nil nnheader-numerical-short-files t))) (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. - (let* ((new (file-name-nondirectory file)) - (len (length new)) - (i 0) - trans) + file + (let* ((i 0) + trans leaf path len) + (if full + ;; Do complete translation. + (setq leaf (copy-sequence file) + path "") + ;; 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 new i) + (when (setq trans (cdr (assq (aref leaf i) nnheader-file-name-translation-alist))) - (aset new i trans)) + (aset leaf i trans)) (incf i)) - (concat (file-name-directory file) new)))) + (concat path leaf)))) (defun nnheader-report (backend &rest args) "Report an error from the BACKEND. @@ -354,10 +634,14 @@ The first string in ARGS can be a format string." 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 @@ -368,19 +652,6 @@ without formatting." (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*") - (insert-file-contents-literally file) - (goto-char (point-min)) - (prog1 - (looking-at rmail-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. @@ -388,19 +659,19 @@ without formatting." (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-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 ""))) @@ -418,6 +689,9 @@ without formatting." (or (not (numberp gnus-verbose-backends)) (<= level gnus-verbose-backends))) +(defvar nnheader-pathname-coding-system 'iso-8859-1 + "*Coding system for pathname.") + (defun nnheader-group-pathname (group dir &optional file) "Make pathname for GROUP." (concat @@ -426,7 +700,11 @@ without formatting." (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 ?. ?/) "/"))) + (concat dir + (gnus-encode-coding-string + (nnheader-replace-chars-in-string group ?. ?/) + nnheader-pathname-coding-system) + "/"))) (cond ((null file) "") ((numberp file) (int-to-string file)) (t file)))) @@ -436,8 +714,154 @@ without formatting." (or (and (symbolp form) (fboundp form)) (and (listp form) (eq (car form) 'lambda)))) -(fset 'nnheader-find-file-noselect 'find-file-noselect) - +(defun nnheader-concat (dir &rest files) + "Concat DIR as directory to FILE." + (apply 'concat (file-name-as-directory dir) files)) + +(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)))) + +(defun nnheader-file-size (file) + "Return the file size of FILE or 0." + (or (nth 7 (file-attributes file)) 0)) + +(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, + ;; stripping away the last component and adding "etc/". + (while path + (if (and (car path) + (file-exists-p + (setq dir (concat + (file-name-directory + (directory-file-name (car path))) + "etc/" package + (if file "" "/")))) + (or file (file-directory-p dir))) + (setq result dir + path nil) + (setq path (cdr path)))) + result)) + +(defvar ange-ftp-path-format) +(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)) + (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))))) + +(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 ((format-alist nil) + (auto-mode-alist (nnheader-auto-mode-alist)) + (default-major-mode 'fundamental-mode) + (enable-local-variables nil) + (after-insert-file-functions nil) + (find-file-hooks nil) + (coding-system-for-read nnheader-file-coding-system)) + (insert-file-contents filename visit beg end replace))) + +(defun nnheader-find-file-noselect (&rest args) + (let ((format-alist nil) + (auto-mode-alist (nnheader-auto-mode-alist)) + (default-major-mode 'fundamental-mode) + (enable-local-variables nil) + (after-insert-file-functions nil) + (find-file-hooks nil) + (coding-system-for-read nnheader-file-coding-system)) + (apply 'find-file-noselect args))) + +(defun nnheader-auto-mode-alist () + "Return an `auto-mode-alist' with only the .gz (etc) thingies." + (let ((alist auto-mode-alist) + out) + (while alist + (when (listp (cdar alist)) + (push (car alist) out)) + (pop alist)) + (nreverse out))) + +(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 new) + (buffer-disable-undo (current-buffer)) + (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")) + +(fset 'nnheader-run-at-time 'run-at-time) +(fset 'nnheader-cancel-timer 'cancel-timer) +(fset 'nnheader-cancel-function-timers 'cancel-function-timers) + +(when (string-match "XEmacs\\|Lucid" emacs-version) + (require 'nnheaderxm)) + +(run-hooks 'nnheader-load-hook) + (provide 'nnheader) ;;; nnheader.el ends here