Mercurial > hg > xemacs-beta
comparison lisp/gnus/nnheaderxm.el @ 0:376386a54a3c r19-14
Import from CVS: tag r19-14
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 08:45:50 +0200 |
| parents | |
| children | 0293115a14e9 |
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| -1:000000000000 | 0:376386a54a3c |
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| 1 ;;; nnheaderxm.el --- making Gnus backends work under XEmacs | |
| 2 ;; Copyright (C) 1996 Free Software Foundation, Inc. | |
| 3 | |
| 4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no> | |
| 5 ;; Keywords: news | |
| 6 | |
| 7 ;; This file is part of GNU Emacs. | |
| 8 | |
| 9 ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 10 ;; it under the terms of the GNU General Public License as published by | |
| 11 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 12 ;; any later version. | |
| 13 | |
| 14 ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 ;; GNU General Public License for more details. | |
| 18 | |
| 19 ;; You should have received a copy of the GNU General Public License | |
| 20 ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
| 21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 22 ;; Boston, MA 02111-1307, USA. | |
| 23 | |
| 24 ;;; Commentary: | |
| 25 | |
| 26 ;;; Code: | |
| 27 | |
| 28 (defun nnheader-xmas-run-at-time (time repeat function &rest args) | |
| 29 (start-itimer | |
| 30 "nnheader-run-at-time" | |
| 31 `(lambda () | |
| 32 (,function ,@args)) | |
| 33 time repeat)) | |
| 34 | |
| 35 (defun nnheader-xmas-cancel-timer (timer) | |
| 36 (delete-itimer timer)) | |
| 37 | |
| 38 ;; Written by Erik Naggum <erik@naggum.no>. | |
| 39 ;; Saved by Steve Baur <steve@miranova.com>. | |
| 40 (defun nnheader-xmas-insert-file-contents-literally (filename &optional visit beg end replace) | |
| 41 "Like `insert-file-contents', q.v., but only reads in the file. | |
| 42 A buffer may be modified in several ways after reading into the buffer due | |
| 43 to advanced Emacs features, such as file-name-handlers, format decoding, | |
| 44 find-file-hooks, etc. | |
| 45 This function ensures that none of these modifications will take place." | |
| 46 (let ( ; (file-name-handler-alist nil) | |
| 47 (format-alist nil) | |
| 48 (after-insert-file-functions nil) | |
| 49 (find-buffer-file-type-function | |
| 50 (if (fboundp 'find-buffer-file-type) | |
| 51 (symbol-function 'find-buffer-file-type) | |
| 52 nil))) | |
| 53 (unwind-protect | |
| 54 (progn | |
| 55 (fset 'find-buffer-file-type (lambda (filename) t)) | |
| 56 (insert-file-contents filename visit beg end replace)) | |
| 57 (if find-buffer-file-type-function | |
| 58 (fset 'find-buffer-file-type find-buffer-file-type-function) | |
| 59 (fmakunbound 'find-buffer-file-type))))) | |
| 60 | |
| 61 (defun nnheader-xmas-find-file-noselect (filename &optional nowarn rawfile) | |
| 62 "Read file FILENAME into a buffer and return the buffer. | |
| 63 If a buffer exists visiting FILENAME, return that one, but | |
| 64 verify that the file has not changed since visited or saved. | |
| 65 The buffer is not selected, just returned to the caller." | |
| 66 (setq filename | |
| 67 (abbreviate-file-name | |
| 68 (expand-file-name filename))) | |
| 69 (if (file-directory-p filename) | |
| 70 (if find-file-run-dired | |
| 71 (dired-noselect filename) | |
| 72 (error "%s is a directory." filename)) | |
| 73 (let* ((buf (get-file-buffer filename)) | |
| 74 (truename (abbreviate-file-name (file-truename filename))) | |
| 75 (number (nthcdr 10 (file-attributes truename))) | |
| 76 ;; Find any buffer for a file which has same truename. | |
| 77 (other (and (not buf) | |
| 78 (get-file-buffer filename))) | |
| 79 error) | |
| 80 ;; Let user know if there is a buffer with the same truename. | |
| 81 (if other | |
| 82 (progn | |
| 83 (or nowarn | |
| 84 (string-equal filename (buffer-file-name other)) | |
| 85 (message "%s and %s are the same file" | |
| 86 filename (buffer-file-name other))) | |
| 87 ;; Optionally also find that buffer. | |
| 88 (if (or (and (boundp 'find-file-existing-other-name) | |
| 89 find-file-existing-other-name) | |
| 90 find-file-visit-truename) | |
| 91 (setq buf other)))) | |
| 92 (if buf | |
| 93 (or nowarn | |
| 94 (verify-visited-file-modtime buf) | |
| 95 (cond ((not (file-exists-p filename)) | |
| 96 (error "File %s no longer exists!" filename)) | |
| 97 ((yes-or-no-p | |
| 98 (if (string= (file-name-nondirectory filename) | |
| 99 (buffer-name buf)) | |
| 100 (format | |
| 101 (if (buffer-modified-p buf) | |
| 102 "File %s changed on disk. Discard your edits? " | |
| 103 "File %s changed on disk. Reread from disk? ") | |
| 104 (file-name-nondirectory filename)) | |
| 105 (format | |
| 106 (if (buffer-modified-p buf) | |
| 107 "File %s changed on disk. Discard your edits in %s? " | |
| 108 "File %s changed on disk. Reread from disk into %s? ") | |
| 109 (file-name-nondirectory filename) | |
| 110 (buffer-name buf)))) | |
| 111 (save-excursion | |
| 112 (set-buffer buf) | |
| 113 (revert-buffer t t))))) | |
| 114 (save-excursion | |
| 115 ;;; The truename stuff makes this obsolete. | |
| 116 ;;; (let* ((link-name (car (file-attributes filename))) | |
| 117 ;;; (linked-buf (and (stringp link-name) | |
| 118 ;;; (get-file-buffer link-name)))) | |
| 119 ;;; (if (bufferp linked-buf) | |
| 120 ;;; (message "Symbolic link to file in buffer %s" | |
| 121 ;;; (buffer-name linked-buf)))) | |
| 122 (setq buf (create-file-buffer filename)) | |
| 123 ;; (set-buffer-major-mode buf) | |
| 124 (set-buffer buf) | |
| 125 (erase-buffer) | |
| 126 (if rawfile | |
| 127 (condition-case () | |
| 128 (nnheader-insert-file-contents-literally filename t) | |
| 129 (file-error | |
| 130 ;; Unconditionally set error | |
| 131 (setq error t))) | |
| 132 (condition-case () | |
| 133 (insert-file-contents filename t) | |
| 134 (file-error | |
| 135 ;; Run find-file-not-found-hooks until one returns non-nil. | |
| 136 (or t ; (run-hook-with-args-until-success 'find-file-not-found-hooks) | |
| 137 ;; If they fail too, set error. | |
| 138 (setq error t))))) | |
| 139 ;; Find the file's truename, and maybe use that as visited name. | |
| 140 (setq buffer-file-truename truename) | |
| 141 (setq buffer-file-number number) | |
| 142 ;; On VMS, we may want to remember which directory in a search list | |
| 143 ;; the file was found in. | |
| 144 (and (eq system-type 'vax-vms) | |
| 145 (let (logical) | |
| 146 (if (string-match ":" (file-name-directory filename)) | |
| 147 (setq logical (substring (file-name-directory filename) | |
| 148 0 (match-beginning 0)))) | |
| 149 (not (member logical find-file-not-true-dirname-list))) | |
| 150 (setq buffer-file-name buffer-file-truename)) | |
| 151 (if find-file-visit-truename | |
| 152 (setq buffer-file-name | |
| 153 (setq filename | |
| 154 (expand-file-name buffer-file-truename)))) | |
| 155 ;; Set buffer's default directory to that of the file. | |
| 156 (setq default-directory (file-name-directory filename)) | |
| 157 ;; Turn off backup files for certain file names. Since | |
| 158 ;; this is a permanent local, the major mode won't eliminate it. | |
| 159 (and (not (funcall backup-enable-predicate buffer-file-name)) | |
| 160 (progn | |
| 161 (make-local-variable 'backup-inhibited) | |
| 162 (setq backup-inhibited t))) | |
| 163 (if rawfile | |
| 164 nil | |
| 165 (after-find-file error (not nowarn))))) | |
| 166 buf))) | |
| 167 | |
| 168 (fset 'nnheader-run-at-time 'nnheader-xmas-run-at-time) | |
| 169 (fset 'nnheader-cancel-timer 'nnheader-xmas-cancel-timer) | |
| 170 (fset 'nnheader-find-file-noselect 'nnheader-xmas-find-file-noselect) | |
| 171 (fset 'nnheader-insert-file-contents-literally | |
| 172 (if (fboundp 'insert-file-contents-literally) | |
| 173 'insert-file-contents-literally | |
| 174 'nnheader-xmas-insert-file-contents-literally)) | |
| 175 | |
| 176 (provide 'nnheaderxm) | |
| 177 | |
| 178 ;;; nnheaderxm.el ends here. |