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comparison lisp/gnus/nnheaderxm.el @ 153:25f70ba0133c r20-3b3

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Import from CVS: tag r20-3b3
author cvs
date Mon, 13 Aug 2007 09:38:25 +0200
parents 360340f9fd5f
children
comparison
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152:4c132ee2d62b 153:25f70ba0133c
23 23
24 ;;; Commentary: 24 ;;; Commentary:
25 25
26 ;;; Code: 26 ;;; Code:
27 27
28 (eval-and-compile
29 (autoload 'nnheader-insert-file-contents "nnheader"))
30
31 (defun nnheader-xmas-run-at-time (time repeat function &rest args) 28 (defun nnheader-xmas-run-at-time (time repeat function &rest args)
32 (start-itimer 29 (start-itimer
33 "nnheader-run-at-time" 30 "nnheader-run-at-time"
34 `(lambda () 31 `(lambda ()
35 (,function ,@args)) 32 (,function ,@args))
36 time repeat)) 33 time repeat))
37 34
38 (defun nnheader-xmas-cancel-timer (timer)
39 (delete-itimer timer))
40
41 (defun nnheader-xmas-cancel-function-timers (function)
42 )
43
44 (defun nnheader-xmas-find-file-noselect (filename &optional nowarn rawfile)
45 "Read file FILENAME into a buffer and return the buffer.
46 If a buffer exists visiting FILENAME, return that one, but
47 verify that the file has not changed since visited or saved.
48 The buffer is not selected, just returned to the caller."
49 (setq filename
50 (abbreviate-file-name
51 (expand-file-name filename)))
52 (if (file-directory-p filename)
53 (if find-file-run-dired
54 (dired-noselect filename)
55 (error "%s is a directory." filename))
56 (let* ((buf (get-file-buffer filename))
57 (truename (abbreviate-file-name (file-truename filename)))
58 (number (nthcdr 10 (file-attributes truename)))
59 ;; Find any buffer for a file which has same truename.
60 (other (and (not buf)
61 (get-file-buffer filename)))
62 error)
63 ;; Let user know if there is a buffer with the same truename.
64 (when other
65 (or nowarn
66 (string-equal filename (buffer-file-name other))
67 (message "%s and %s are the same file"
68 filename (buffer-file-name other)))
69 ;; Optionally also find that buffer.
70 (when (or (and (boundp 'find-file-existing-other-name)
71 find-file-existing-other-name)
72 find-file-visit-truename)
73 (setq buf other)))
74 (if buf
75 (or nowarn
76 (verify-visited-file-modtime buf)
77 (cond ((not (file-exists-p filename))
78 (error "File %s no longer exists!" filename))
79 ((yes-or-no-p
80 (if (string= (file-name-nondirectory filename)
81 (buffer-name buf))
82 (format
83 (if (buffer-modified-p buf)
84 "File %s changed on disk. Discard your edits? "
85 "File %s changed on disk. Reread from disk? ")
86 (file-name-nondirectory filename))
87 (format
88 (if (buffer-modified-p buf)
89 "File %s changed on disk. Discard your edits in %s? "
90 "File %s changed on disk. Reread from disk into %s? ")
91 (file-name-nondirectory filename)
92 (buffer-name buf))))
93 (save-excursion
94 (set-buffer buf)
95 (revert-buffer t t)))))
96 (save-excursion
97 ;;; The truename stuff makes this obsolete.
98 ;;; (let* ((link-name (car (file-attributes filename)))
99 ;;; (linked-buf (and (stringp link-name)
100 ;;; (get-file-buffer link-name))))
101 ;;; (if (bufferp linked-buf)
102 ;;; (message "Symbolic link to file in buffer %s"
103 ;;; (buffer-name linked-buf))))
104 (setq buf (create-file-buffer filename))
105 ;; (set-buffer-major-mode buf)
106 (set-buffer buf)
107 (erase-buffer)
108 (if rawfile
109 (condition-case ()
110 (nnheader-insert-file-contents filename t)
111 (file-error
112 ;; Unconditionally set error
113 (setq error t)))
114 (condition-case ()
115 (insert-file-contents filename t)
116 (file-error
117 ;; Run find-file-not-found-hooks until one returns non-nil.
118 (or t ; (run-hook-with-args-until-success 'find-file-not-found-hooks)
119 ;; If they fail too, set error.
120 (setq error t)))))
121 ;; Find the file's truename, and maybe use that as visited name.
122 (setq buffer-file-truename truename)
123 (setq buffer-file-number number)
124 ;; On VMS, we may want to remember which directory in a search list
125 ;; the file was found in.
126 (and (eq system-type 'vax-vms)
127 (let (logical)
128 (when (string-match ":" (file-name-directory filename))
129 (setq logical (substring (file-name-directory filename)
130 0 (match-beginning 0))))
131 (not (member logical find-file-not-true-dirname-list)))
132 (setq buffer-file-name buffer-file-truename))
133 (when find-file-visit-truename
134 (setq buffer-file-name
135 (setq filename
136 (expand-file-name buffer-file-truename))))
137 ;; Set buffer's default directory to that of the file.
138 (setq default-directory (file-name-directory filename))
139 ;; Turn off backup files for certain file names. Since
140 ;; this is a permanent local, the major mode won't eliminate it.
141 (when (not (funcall backup-enable-predicate buffer-file-name))
142 (make-local-variable 'backup-inhibited)
143 (setq backup-inhibited t))
144 (if rawfile
145 nil
146 (after-find-file error (not nowarn)))))
147 buf)))
148
149 (fset 'nnheader-run-at-time 'nnheader-xmas-run-at-time) 35 (fset 'nnheader-run-at-time 'nnheader-xmas-run-at-time)
150 (fset 'nnheader-cancel-timer 'nnheader-xmas-cancel-timer) 36 (fset 'nnheader-cancel-timer 'delete-itimer)
151 (fset 'nnheader-cancel-function-timers 'nnheader-xmas-cancel-function-timers) 37 (fset 'nnheader-cancel-function-timers 'ignore)
152 (fset 'nnheader-find-file-noselect 'nnheader-xmas-find-file-noselect)
153 38
154 (provide 'nnheaderxm) 39 (provide 'nnheaderxm)
155 40
156 ;;; nnheaderxm.el ends here. 41 ;;; nnheaderxm.el ends here.