;;; Code:
-(defconst mm-running-xemacs (string-match "XEmacs" emacs-version))
-
-(defconst mm-binary-coding-system
- (if mm-running-xemacs
- 'binary 'no-conversion)
- "100% binary coding system.")
-
-(defconst mm-text-coding-system
- (and (fboundp 'coding-system-list)
- (if (memq system-type '(windows-nt ms-dos ms-windows))
- 'raw-text-dos 'raw-text))
- "Text-safe coding system (For removing ^M).")
-
(defvar mm-mime-mule-charset-alist
'((us-ascii ascii)
(iso-8859-1 latin-iso8859-1)
(lambda (elem)
(let ((nfunc (intern (format "mm-%s" (car elem)))))
(if (fboundp (car elem))
- (fset nfunc (car elem))
- (fset nfunc (cdr elem)))))
+ (defalias nfunc (car elem))
+ (defalias nfunc (cdr elem)))))
'((decode-coding-string . (lambda (s a) s))
(encode-coding-string . (lambda (s a) s))
(encode-coding-region . ignore)
(x-ctext . ctext))
"A mapping from invalid charset names to the real charset names.")
-(defconst mm-auto-save-coding-system
+(defun mm-coding-system-p (sym)
+ "Return non-nil if SYM is a coding system."
+ (or (and (fboundp 'coding-system-p) (coding-system-p sym))
+ (memq sym (mm-get-coding-system-list))))
+
+(defvar mm-binary-coding-system
(cond
- ((memq 'emacs-mule (mm-get-coding-system-list))
- (if (memq system-type '(windows-nt ms-dos ms-windows))
- 'emacs-mule-dos 'emacs-mule))
- ((memq 'escape-quoted (mm-get-coding-system-list))
- 'escape-quoted)
- ((memq 'no-conversion (mm-get-coding-system-list))
- 'no-conversion)
+ ((mm-coding-system-p 'no-conversion) 'no-conversion)
+ ((mm-coding-system-p 'binary) 'binary)
(t nil))
+ "100% binary coding system.")
+
+(defvar mm-text-coding-system
+ (or (if (memq system-type '(windows-nt ms-dos ms-windows))
+ (and (mm-coding-system-p 'raw-text-dos) 'raw-text-dos)
+ (and (mm-coding-system-p 'raw-text) 'raw-text))
+ mm-binary-coding-system)
+ "Text-safe coding system (For removing ^M).")
+
+(defvar mm-text-coding-system-for-write nil
+ "Text coding system for write.")
+
+(defvar mm-auto-save-coding-system
+ (cond
+ ((mm-coding-system-p 'emacs-mule)
+ (if (memq system-type '(windows-nt ms-dos ms-windows))
+ (if (mm-coding-system-p 'emacs-mule-dos)
+ 'emacs-mule-dos mm-binary-coding-system)
+ 'emacs-mule))
+ ((mm-coding-system-p 'escape-quoted) 'escape-quoted)
+ (t mm-binary-coding-system))
"Coding system of auto save file.")
;;; Internal variables:
(pop alist))
(nreverse out)))
-(defun mm-insert-file-contents (filename &optional visit beg end replace)
+(defvar mm-inhibit-file-name-handlers
+ '(jka-compr-handler)
+ "A list of handlers doing (un)compression (etc) thingies.")
+
+(defun mm-insert-file-contents (filename &optional visit beg end replace
+ inhibit)
"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.
+If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers.
This function ensures that none of these modifications will take place."
(let ((format-alist nil)
- (auto-mode-alist (mm-auto-mode-alist))
+ (auto-mode-alist (if inhibit nil (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))
+ (find-file-hooks nil)
+ (inhibit-file-name-operation (if inhibit
+ 'insert-file-contents
+ inhibit-file-name-operation))
+ (inhibit-file-name-handlers
+ (if inhibit
+ (append mm-inhibit-file-name-handlers
+ inhibit-file-name-handlers)
+ inhibit-file-name-handlers)))
(insert-file-contents filename visit beg end replace)))
+(defun mm-append-to-file (start end filename &optional codesys inhibit)
+ "Append the contents of the region to the end of file FILENAME.
+When called from a function, expects three arguments,
+START, END and FILENAME. START and END are buffer positions
+saying what text to write.
+Optional fourth argument specifies the coding system to use when
+encoding the file.
+If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers."
+ (let ((coding-system-for-write
+ (or codesys mm-text-coding-system-for-write
+ mm-text-coding-system))
+ (inhibit-file-name-operation (if inhibit
+ 'append-to-file
+ inhibit-file-name-operation))
+ (inhibit-file-name-handlers
+ (if inhibit
+ (append mm-inhibit-file-name-handlers
+ inhibit-file-name-handlers)
+ inhibit-file-name-handlers)))
+ (append-to-file start end filename)))
+
+(defun mm-write-region (start end filename &optional append visit lockname
+ coding-system inhibit)
+
+ "Like `write-region'.
+If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers."
+ (let ((coding-system-for-write
+ (or coding-system mm-text-coding-system-for-write
+ mm-text-coding-system))
+ (inhibit-file-name-operation (if inhibit
+ 'write-region
+ inhibit-file-name-operation))
+ (inhibit-file-name-handlers
+ (if inhibit
+ (append mm-inhibit-file-name-handlers
+ inhibit-file-name-handlers)
+ inhibit-file-name-handlers)))
+ (write-region start end filename append visit lockname)))
+
(provide 'mm-util)
;;; mm-util.el ends here
projects / elisp / gnus.git- / blobdiff