;;; mm-util.el --- Utility functions for Mule and low level things
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
-;; Free Software Foundation, Inc.
+
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+;; 2005 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
(coding-system-equal . equal)
(annotationp . ignore)
(set-buffer-file-coding-system . ignore)
- (make-char
- . (lambda (charset int)
- (int-to-char int)))
(read-charset
. (lambda (prompt)
"Return a charset."
mm-mime-mule-charset-alist)
nil t))))
(subst-char-in-string
- . (lambda (from to string) ;; stolen (and renamed) from nnheader.el
- "Replace characters in STRING from FROM to TO."
- (let ((string (substring string 0)) ;Copy string.
+ . (lambda (from to string &optional inplace)
+ ;; stolen (and renamed) from nnheader.el
+ "Replace characters in STRING from FROM to TO.
+ Unless optional argument INPLACE is non-nil, return a new string."
+ (let ((string (if inplace string (copy-sequence string)))
(len (length string))
(idx 0))
;; Replace all occurrences of FROM with TO.
(aset string idx to))
(setq idx (1+ idx)))
string)))
+ (replace-in-string
+ . (lambda (string regexp rep &optional literal)
+ "See `replace-regexp-in-string', only the order of args differs."
+ (replace-regexp-in-string regexp rep string nil literal)))
(string-as-unibyte . identity)
(string-make-unibyte . identity)
+ ;; string-as-multibyte often doesn't really do what you think it does.
+ ;; Example:
+ ;; (aref (string-as-multibyte "\201") 0) -> 129 (aka ?\201)
+ ;; (aref (string-as-multibyte "\300") 0) -> 192 (aka ?\300)
+ ;; (aref (string-as-multibyte "\300\201") 0) -> 192 (aka ?\300)
+ ;; (aref (string-as-multibyte "\300\201") 1) -> 129 (aka ?\201)
+ ;; but
+ ;; (aref (string-as-multibyte "\201\300") 0) -> 2240
+ ;; (aref (string-as-multibyte "\201\300") 1) -> <error>
+ ;; Better use string-to-multibyte or encode-coding-string.
+ ;; If you really need string-as-multibyte somewhere it's usually
+ ;; because you're using the internal emacs-mule representation (maybe
+ ;; because you're using string-as-unibyte somewhere), which is
+ ;; generally a problem in itself.
+ ;; Here is an approximate equivalence table to help think about it:
+ ;; (string-as-multibyte s) ~= (decode-coding-string s 'emacs-mule)
+ ;; (string-to-multibyte s) ~= (decode-coding-string s 'binary)
+ ;; (string-make-multibyte s) ~= (decode-coding-string s locale-coding-system)
(string-as-multibyte . identity)
+ (string-to-multibyte
+ . (lambda (string)
+ "Return a multibyte string with the same individual chars as string."
+ (mapconcat
+ (lambda (ch) (mm-string-as-multibyte (char-to-string ch)))
+ string "")))
(multibyte-string-p . ignore)
+ ;; It is not a MIME function, but some MIME functions use it.
+ (make-temp-file . (lambda (prefix &optional dir-flag)
+ (let ((file (expand-file-name
+ (make-temp-name prefix)
+ (if (fboundp 'temp-directory)
+ (temp-directory)
+ temporary-file-directory))))
+ (if dir-flag
+ (make-directory file))
+ file)))
(insert-byte . insert-char)
(multibyte-char-to-unibyte . identity))))
((fboundp 'char-valid-p) 'char-valid-p)
(t 'identity))))
+;; Fixme: This seems always to be used to read a MIME charset, so it
+;; should be re-named and fixed (in Emacs) to offer completion only on
+;; proper charset names (base coding systems which have a
+;; mime-charset defined). XEmacs doesn't believe in mime-charset;
+;; test with
+;; `(or (coding-system-get 'iso-8859-1 'mime-charset)
+;; (coding-system-get 'iso-8859-1 :mime-charset))'
+;; Actually, there should be an `mm-coding-system-mime-charset'.
(eval-and-compile
(defalias 'mm-read-coding-system
(cond
(or mm-coding-system-list
(setq mm-coding-system-list (mm-coding-system-list))))
-(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))))
+(defun mm-coding-system-p (cs)
+ "Return non-nil if CS is a symbol naming a coding system.
+In XEmacs, also return non-nil if CS is a coding system object.
+If CS is available, return CS itself in Emacs, and return a coding
+system object in XEmacs."
+ (if (fboundp 'find-coding-system)
+ (and cs (find-coding-system cs))
+ (if (fboundp 'coding-system-p)
+ (when (coding-system-p cs)
+ cs)
+ ;; Is this branch ever actually useful?
+ (car (memq cs (mm-get-coding-system-list))))))
(defvar mm-charset-synonym-alist
`(
- ;; Perfectly fine? A valid MIME name, anyhow.
- ,@(unless (mm-coding-system-p 'big5)
- '((big5 . cn-big5)))
;; Not in XEmacs, but it's not a proper MIME charset anyhow.
,@(unless (mm-coding-system-p 'x-ctext)
'((x-ctext . ctext)))
- ;; Apparently not defined in Emacs 20, but is a valid MIME name.
- ,@(unless (mm-coding-system-p 'gb2312)
- '((gb2312 . cn-gb-2312)))
- ;; ISO-8859-15 is very similar to ISO-8859-1.
- ,@(unless (mm-coding-system-p 'iso-8859-15) ; Emacs 21 defines it.
+ ;; ISO-8859-15 is very similar to ISO-8859-1. But it's _different_!
+ ,@(unless (mm-coding-system-p 'iso-8859-15)
'((iso-8859-15 . iso-8859-1)))
+ ;; BIG-5HKSCS is similar to, but different than, BIG-5.
+ ,@(unless (mm-coding-system-p 'big5-hkscs)
+ '((big5-hkscs . big5)))
;; Windows-1252 is actually a superset of Latin-1. See also
;; `gnus-article-dumbquotes-map'.
,@(unless (mm-coding-system-p 'windows-1252)
,@(if (and (not (mm-coding-system-p 'windows-1250))
(mm-coding-system-p 'cp1250))
'((windows-1250 . cp1250)))
+ ;; A Microsoft misunderstanding.
+ ,@(if (and (not (mm-coding-system-p 'unicode))
+ (mm-coding-system-p 'utf-16-le))
+ '((unicode . utf-16-le)))
+ ;; A Microsoft misunderstanding.
+ ,@(unless (mm-coding-system-p 'ks_c_5601-1987)
+ (if (mm-coding-system-p 'cp949)
+ '((ks_c_5601-1987 . cp949))
+ '((ks_c_5601-1987 . euc-kr))))
)
"A mapping from invalid charset names to the real charset names.")
(big5 chinese-big5-1 chinese-big5-2)
(tibetan tibetan)
(thai-tis620 thai-tis620)
+ (windows-1251 cyrillic-iso8859-5)
(iso-2022-7bit ethiopic arabic-1-column arabic-2-column)
(iso-2022-jp-2 latin-iso8859-1 greek-iso8859-7
latin-jisx0201 japanese-jisx0208-1978
chinese-gb2312 japanese-jisx0208
- korean-ksc5601 japanese-jisx0212
- katakana-jisx0201)
+ korean-ksc5601 japanese-jisx0212)
(iso-2022-int-1 latin-iso8859-1 greek-iso8859-7
latin-jisx0201 japanese-jisx0208-1978
chinese-gb2312 japanese-jisx0208
chinese-cns11643-3 chinese-cns11643-4
chinese-cns11643-5 chinese-cns11643-6
chinese-cns11643-7)
+ (iso-2022-jp-3 latin-jisx0201 japanese-jisx0208-1978 japanese-jisx0208
+ japanese-jisx0213-1 japanese-jisx0213-2)
+ (shift_jis latin-jisx0201 katakana-jisx0201 japanese-jisx0208)
,(if (or (not (fboundp 'charsetp)) ;; non-Mule case
(charsetp 'unicode-a)
(not (mm-coding-system-p 'mule-utf-8)))
(coding-system-get 'mule-utf-8 'safe-charsets)))))
"Alist of MIME-charset/MULE-charsets.")
-;; Correct by construction, but should be unnecessary:
-;; XEmacs hates it.
-(when (and (not (featurep 'xemacs))
- (fboundp 'coding-system-list)
- (fboundp 'sort-coding-systems))
- (setq mm-mime-mule-charset-alist
- (apply
- 'nconc
- (mapcar
- (lambda (cs)
- (when (and (or (coding-system-get cs :mime-charset) ; Emacs 22
- (coding-system-get cs 'mime-charset))
- (not (eq t (coding-system-get cs 'safe-charsets))))
- (list (cons (or (coding-system-get cs :mime-charset)
- (coding-system-get cs 'mime-charset))
- (delq 'ascii
- (coding-system-get cs 'safe-charsets))))))
- (sort-coding-systems (coding-system-list 'base-only))))))
+(defun mm-enrich-utf-8-by-mule-ucs ()
+ "Make the `utf-8' MIME charset usable by the Mule-UCS package.
+This function will run when the `un-define' module is loaded under
+XEmacs, and fill the `utf-8' entry in `mm-mime-mule-charset-alist'
+with Mule charsets. It is completely useless for Emacs."
+ (unless (cdr (delete '(mm-enrich-utf-8-by-mule-ucs)
+ (assoc "un-define" after-load-alist)))
+ (setq after-load-alist
+ (delete '("un-define") after-load-alist)))
+ (when (boundp 'unicode-basic-translation-charset-order-list)
+ (condition-case nil
+ (let ((val (delq
+ 'ascii
+ (copy-sequence
+ (symbol-value
+ 'unicode-basic-translation-charset-order-list))))
+ (elem (assq 'utf-8 mm-mime-mule-charset-alist)))
+ (if elem
+ (setcdr elem val)
+ (setq mm-mime-mule-charset-alist
+ (nconc mm-mime-mule-charset-alist
+ (list (cons 'utf-8 val))))))
+ (error))))
+
+;; Correct by construction, but should be unnecessary for Emacs:
+(if (featurep 'xemacs)
+ (eval-after-load "un-define" '(mm-enrich-utf-8-by-mule-ucs))
+ (when (and (fboundp 'coding-system-list)
+ (fboundp 'sort-coding-systems))
+ (let ((css (sort-coding-systems (coding-system-list 'base-only)))
+ cs mime mule alist)
+ (while css
+ (setq cs (pop css)
+ mime (or (coding-system-get cs :mime-charset) ; Emacs 22
+ (coding-system-get cs 'mime-charset)))
+ (when (and mime
+ (not (eq t (setq mule
+ (coding-system-get cs 'safe-charsets))))
+ (not (assq mime alist)))
+ (push (cons mime (delq 'ascii mule)) alist)))
+ (setq mm-mime-mule-charset-alist (nreverse alist)))))
(defvar mm-hack-charsets '(iso-8859-15 iso-2022-jp-2)
"A list of special charsets.
(if (boundp 'current-language-environment)
(let ((lang (symbol-value 'current-language-environment)))
(cond ((string= lang "Japanese")
- ;; Japanese users may prefer iso-2022-jp to shift-jis.
- '(iso-2022-jp iso-2022-jp-2 japanese-shift-jis
- iso-latin-1 utf-8)))))
- "Preferred coding systems for encoding outgoing mails.
-
-More than one suitable coding system may be found for some text. By
-default, the coding system with the highest priority is used to encode
-outgoing mails (see `sort-coding-systems'). If this variable is set,
-it overrides the default priority."
+ ;; Japanese users prefer iso-2022-jp to euc-japan or
+ ;; shift_jis, however iso-8859-1 should be used when
+ ;; there are only ASCII text and Latin-1 characters.
+ '(iso-8859-1 iso-2022-jp iso-2022-jp-2 shift_jis utf-8)))))
+ "Preferred coding systems for encoding outgoing messages.
+
+More than one suitable coding system may be found for some text.
+By default, the coding system with the highest priority is used
+to encode outgoing messages (see `sort-coding-systems'). If this
+variable is set, it overrides the default priority."
+ :version "21.2"
:type '(repeat (symbol :tag "Coding system"))
:group 'mime)
"Return the MIME charset corresponding to the given Mule CHARSET."
(if (and (fboundp 'find-coding-systems-for-charsets)
(fboundp 'sort-coding-systems))
- (let (mime)
- (dolist (cs (sort-coding-systems
- (copy-sequence
- (find-coding-systems-for-charsets (list charset)))))
- (unless mime
- (when cs
- (setq mime (or (coding-system-get cs :mime-charset)
- (coding-system-get cs 'mime-charset))))))
+ (let ((css (sort (sort-coding-systems
+ (find-coding-systems-for-charsets (list charset)))
+ 'mm-sort-coding-systems-predicate))
+ cs mime)
+ (while (and (not mime)
+ css)
+ (when (setq cs (pop css))
+ (setq mime (or (coding-system-get cs :mime-charset)
+ (coding-system-get cs 'mime-charset)))))
mime)
- (let ((alist mm-mime-mule-charset-alist)
+ (let ((alist (mapcar (lambda (cs)
+ (assq cs mm-mime-mule-charset-alist))
+ (sort (mapcar 'car mm-mime-mule-charset-alist)
+ 'mm-sort-coding-systems-predicate)))
out)
(while alist
(when (memq charset (cdar alist))
(setq cs c)))
cs))))
-(defsubst mm-replace-chars-in-string (string from to)
- (mm-subst-char-in-string from to string))
-
(eval-and-compile
(defvar mm-emacs-mule (and (not (featurep 'xemacs))
(boundp 'default-enable-multibyte-characters)
default-enable-multibyte-characters
(fboundp 'set-buffer-multibyte))
- "Emacs mule.")
-
- (defvar mm-mule4-p (and mm-emacs-mule
- (fboundp 'charsetp)
- (not (charsetp 'eight-bit-control)))
- "Mule version 4.")
+ "True in Emacs with Mule.")
(if mm-emacs-mule
(defun mm-enable-multibyte ()
"Set the multibyte flag of the current buffer.
Only do this if the default value of `enable-multibyte-characters' is
non-nil. This is a no-op in XEmacs."
- (set-buffer-multibyte t))
+ (set-buffer-multibyte 'to))
(defalias 'mm-enable-multibyte 'ignore))
(if mm-emacs-mule
"Unset the multibyte flag of in the current buffer.
This is a no-op in XEmacs."
(set-buffer-multibyte nil))
- (defalias 'mm-disable-multibyte 'ignore))
-
- (if mm-mule4-p
- (defun mm-enable-multibyte-mule4 ()
- "Enable multibyte in the current buffer.
-Only used in Emacs Mule 4."
- (set-buffer-multibyte t))
- (defalias 'mm-enable-multibyte-mule4 'ignore))
-
- (if mm-mule4-p
- (defun mm-disable-multibyte-mule4 ()
- "Disable multibyte in the current buffer.
-Only used in Emacs Mule 4."
- (set-buffer-multibyte nil))
- (defalias 'mm-disable-multibyte-mule4 'ignore)))
+ (defalias 'mm-disable-multibyte 'ignore)))
(defun mm-preferred-coding-system (charset)
;; A typo in some Emacs versions.
(or (get-charset-property charset 'preferred-coding-system)
(get-charset-property charset 'prefered-coding-system)))
+;; Mule charsets shouldn't be used.
(defsubst mm-guess-charset ()
"Guess Mule charset from the language environment."
(or
(setq charset 'ascii)
;; charset-after is fake in some Emacsen.
(setq charset (and (fboundp 'char-charset) (char-charset char)))
- (if (eq charset 'composition)
+ (if (eq charset 'composition) ; Mule 4
(let ((p (or pos (point))))
(cadr (find-charset-region p (1+ p))))
(if (and charset (not (memq charset '(ascii eight-bit-control
(setq result (cons head result)))
(nreverse result)))
-(if (and (not (featurep 'xemacs))
- (boundp 'enable-multibyte-characters))
- (defalias 'mm-multibyte-p
- (lambda ()
- "Say whether multibyte is enabled in the current buffer."
- enable-multibyte-characters))
- (defalias 'mm-multibyte-p (lambda () (featurep 'mule))))
+;; Fixme: This is used in places when it should be testing the
+;; default multibyteness. See mm-default-multibyte-p.
+(eval-and-compile
+ (if (and (not (featurep 'xemacs))
+ (boundp 'enable-multibyte-characters))
+ (defun mm-multibyte-p ()
+ "Non-nil if multibyte is enabled in the current buffer."
+ enable-multibyte-characters)
+ (defun mm-multibyte-p () (featurep 'mule))))
+
+(defun mm-default-multibyte-p ()
+ "Return non-nil if the session is multibyte.
+This affects whether coding conversion should be attempted generally."
+ (if (featurep 'mule)
+ (if (boundp 'default-enable-multibyte-characters)
+ default-enable-multibyte-characters
+ t)))
(defun mm-iso-8859-x-to-15-region (&optional b e)
(if (fboundp 'char-charset)
(let ((priorities
(mapcar (lambda (cs)
;; Note: invalid entries are dropped silently
- (and (coding-system-p cs)
+ (and (setq cs (mm-coding-system-p cs))
(coding-system-base cs)))
mm-coding-system-priorities)))
- (> (length (memq a priorities))
- (length (memq b priorities)))))
+ (and (setq a (mm-coding-system-p a))
+ (if (setq b (mm-coding-system-p b))
+ (> (length (memq (coding-system-base a) priorities))
+ (length (memq (coding-system-base b) priorities)))
+ t))))
+
+(eval-when-compile
+ (autoload 'latin-unity-massage-name "latin-unity")
+ (autoload 'latin-unity-maybe-remap "latin-unity")
+ (autoload 'latin-unity-representations-feasible-region "latin-unity")
+ (autoload 'latin-unity-representations-present-region "latin-unity")
+ (defvar latin-unity-coding-systems)
+ (defvar latin-unity-ucs-list))
+
+(defun mm-xemacs-find-mime-charset-1 (begin end)
+ "Determine which MIME charset to use to send region as message.
+This uses the XEmacs-specific latin-unity package to better handle the
+case where identical characters from diverse ISO-8859-? character sets
+can be encoded using a single one of the corresponding coding systems.
+
+It treats `mm-coding-system-priorities' as the list of preferred
+coding systems; a useful example setting for this list in Western
+Europe would be '(iso-8859-1 iso-8859-15 utf-8), which would default
+to the very standard Latin 1 coding system, and only move to coding
+systems that are less supported as is necessary to encode the
+characters that exist in the buffer.
+
+Latin Unity doesn't know about those non-ASCII Roman characters that
+are available in various East Asian character sets. As such, its
+behavior if you have a JIS 0212 LATIN SMALL LETTER A WITH ACUTE in a
+buffer and it can otherwise be encoded as Latin 1, won't be ideal.
+But this is very much a corner case, so don't worry about it."
+ (let ((systems mm-coding-system-priorities) csets psets curset)
+
+ ;; Load the Latin Unity library, if available.
+ (when (and (not (featurep 'latin-unity)) (locate-library "latin-unity"))
+ (require 'latin-unity))
+
+ ;; Now, can we use it?
+ (if (featurep 'latin-unity)
+ (progn
+ (setq csets (latin-unity-representations-feasible-region begin end)
+ psets (latin-unity-representations-present-region begin end))
+
+ (catch 'done
+
+ ;; Pass back the first coding system in the preferred list
+ ;; that can encode the whole region.
+ (dolist (curset systems)
+ (setq curset (latin-unity-massage-name 'buffer-default curset))
+
+ ;; If the coding system is a universal coding system, then
+ ;; it can certainly encode all the characters in the region.
+ (if (memq curset latin-unity-ucs-list)
+ (throw 'done (list curset)))
+
+ ;; If a coding system isn't universal, and isn't in
+ ;; the list that latin unity knows about, we can't
+ ;; decide whether to use it here. Leave that until later
+ ;; in `mm-find-mime-charset-region' function, whence we
+ ;; have been called.
+ (unless (memq curset latin-unity-coding-systems)
+ (throw 'done nil))
+
+ ;; Right, we know about this coding system, and it may
+ ;; conceivably be able to encode all the characters in
+ ;; the region.
+ (if (latin-unity-maybe-remap begin end curset csets psets t)
+ (throw 'done (list curset))))
+
+ ;; Can't encode using anything from the
+ ;; `mm-coding-system-priorities' list.
+ ;; Leave `mm-find-mime-charset' to do most of the work.
+ nil))
+
+ ;; Right, latin unity isn't available; let `mm-find-charset-region'
+ ;; take its default action, which equally applies to GNU Emacs.
+ nil)))
+
+(defmacro mm-xemacs-find-mime-charset (begin end)
+ (when (featurep 'xemacs)
+ `(and (featurep 'mule) (mm-xemacs-find-mime-charset-1 ,begin ,end))))
(defun mm-find-mime-charset-region (b e &optional hack-charsets)
"Return the MIME charsets needed to encode the region between B and E.
;; `compound-text' is not in the IANA list. We
;; shouldn't normally use anything here with a
;; mime-charset having an `x-' prefix.
- ;; Fixme: allow this to be overridden, since
+ ;; Fixme: Allow this to be overridden, since
;; there is existing use of x-ctext.
;; Also people apparently need the coding system
- ;; `iso-2022-jp-3', which Mule-UCS defines.
+ ;; `iso-2022-jp-3' (which Mule-UCS defines with
+ ;; mime-charset, though it's not valid).
(if (and cs
- (not (string-match "^[Xx]-" (symbol-name cs))))
+ (not (string-match "^[Xx]-" (symbol-name cs)))
+ ;; UTF-16 of any variety is invalid for
+ ;; text parts and, unfortunately, has
+ ;; mime-charset defined both in Mule-UCS
+ ;; and versions of Emacs. (The name
+ ;; might be `mule-utf-16...' or
+ ;; `utf-16...'.)
+ (not (string-match "utf-16" (symbol-name cs))))
(setq systems nil
charsets (list cs))))))
charsets))
- ;; Otherwise we're not multibyte, we're XEmacs or a single
- ;; coding system won't cover it.
+ ;; If we're XEmacs, and some coding system is appropriate,
+ ;; mm-xemacs-find-mime-charset will return an appropriate list.
+ ;; Otherwise, we'll get nil, and the next setq will get invoked.
+ (setq charsets (mm-xemacs-find-mime-charset b e))
+
+ ;; We're not multibyte, or a single coding system won't cover it.
(setq charsets
(mm-delete-duplicates
(mapcar 'mm-mime-charset
(if (and (memq 'iso-2022-jp-2 charsets)
(memq 'iso-2022-jp-2 hack-charsets))
(setq charsets (delq 'iso-2022-jp charsets)))
+ ;; Attempt to reduce the number of charsets if utf-8 is available.
+ (if (and (featurep 'xemacs)
+ (> (length charsets) 1)
+ (mm-coding-system-p 'utf-8))
+ (let ((mm-coding-system-priorities
+ (cons 'utf-8 mm-coding-system-priorities)))
+ (setq charsets
+ (mm-delete-duplicates
+ (mapcar 'mm-mime-charset
+ (delq 'ascii
+ (mm-find-charset-region b e)))))))
charsets))
(defmacro mm-with-unibyte-buffer (&rest forms)
(put 'mm-with-unibyte-buffer 'lisp-indent-function 0)
(put 'mm-with-unibyte-buffer 'edebug-form-spec '(body))
+(defmacro mm-with-multibyte-buffer (&rest forms)
+ "Create a temporary buffer, and evaluate FORMS there like `progn'.
+Use multibyte mode for this."
+ `(let ((default-enable-multibyte-characters t))
+ (with-temp-buffer ,@forms)))
+(put 'mm-with-multibyte-buffer 'lisp-indent-function 0)
+(put 'mm-with-multibyte-buffer 'edebug-form-spec '(body))
+
(defmacro mm-with-unibyte-current-buffer (&rest forms)
"Evaluate FORMS with current buffer temporarily made unibyte.
Also bind `default-enable-multibyte-characters' to nil.
(let ((multibyte (make-symbol "multibyte"))
(buffer (make-symbol "buffer")))
`(if mm-emacs-mule
- (let ((,multibyte enable-multibyte-characters)
+ (let ((,multibyte enable-multibyte-characters)
(,buffer (current-buffer)))
(unwind-protect
(let (default-enable-multibyte-characters)
(put 'mm-with-unibyte-current-buffer 'lisp-indent-function 0)
(put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
-(defmacro mm-with-unibyte-current-buffer-mule4 (&rest forms)
- "Evaluate FORMS there like `progn' in current buffer.
-Mule4 only."
- (let ((multibyte (make-symbol "multibyte"))
- (buffer (make-symbol "buffer")))
- `(if mm-mule4-p
- (let ((,multibyte enable-multibyte-characters)
- (,buffer (current-buffer)))
- (unwind-protect
- (let (default-enable-multibyte-characters)
- (set-buffer-multibyte nil)
- ,@forms)
- (set-buffer ,buffer)
- (set-buffer-multibyte ,multibyte)))
- (let (default-enable-multibyte-characters)
- ,@forms))))
-(put 'mm-with-unibyte-current-buffer-mule4 'lisp-indent-function 0)
-(put 'mm-with-unibyte-current-buffer-mule4 'edebug-form-spec '(body))
-
(defmacro mm-with-unibyte (&rest forms)
- "Eval the FORMS with the default value of `enable-multibyte-characters' nil, ."
+ "Eval the FORMS with the default value of `enable-multibyte-characters' nil."
`(let (default-enable-multibyte-characters)
,@forms))
(put 'mm-with-unibyte 'lisp-indent-function 0)
(put 'mm-with-unibyte 'edebug-form-spec '(body))
+(defmacro mm-with-multibyte (&rest forms)
+ "Eval the FORMS with the default value of `enable-multibyte-characters' t."
+ `(let ((default-enable-multibyte-characters t))
+ ,@forms))
+(put 'mm-with-multibyte 'lisp-indent-function 0)
+(put 'mm-with-multibyte 'edebug-form-spec '(body))
+
(defun mm-find-charset-region (b e)
"Return a list of Emacs charsets in the region B to E."
(cond
mm-mime-mule-charset-alist)))))
(list 'ascii (or charset 'latin-iso8859-1)))))))))
-(if (fboundp 'shell-quote-argument)
- (defalias 'mm-quote-arg 'shell-quote-argument)
- (defun mm-quote-arg (arg)
- "Return a version of ARG that is safe to evaluate in a shell."
- (let ((pos 0) new-pos accum)
- ;; *** bug: we don't handle newline characters properly
- (while (setq new-pos (string-match "[]*[;!'`\"$\\& \t{} |()<>]" arg pos))
- (push (substring arg pos new-pos) accum)
- (push "\\" accum)
- (push (list (aref arg new-pos)) accum)
- (setq pos (1+ new-pos)))
- (if (= pos 0)
- arg
- (apply 'concat (nconc (nreverse accum) (list (substring arg pos))))))))
-
(defun mm-auto-mode-alist ()
"Return an `auto-mode-alist' with only the .gz (etc) thingies."
(let ((alist auto-mode-alist)
(defun mm-insert-file-contents (filename &optional visit beg end replace
inhibit)
- "Like `insert-file-contents', q.v., but only reads in the file.
+ "Like `insert-file-contents', 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.
+`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 (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)
- (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)))
+ (let* ((format-alist nil)
+ (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)
+ (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))
+ (ffh (if (boundp 'find-file-hook)
+ 'find-file-hook
+ 'find-file-hooks))
+ (val (symbol-value ffh)))
+ (set ffh nil)
+ (unwind-protect
+ (insert-file-contents filename visit beg end replace)
+ (set ffh val))))
(defun mm-append-to-file (start end filename &optional codesys inhibit)
"Append the contents of the region to the end of file FILENAME.
(append mm-inhibit-file-name-handlers
inhibit-file-name-handlers)
inhibit-file-name-handlers)))
- (append-to-file start end filename)))
+ (write-region start end filename t 'no-message)
+ (message "Appended to %s" filename)))
(defun mm-write-region (start end filename &optional append visit lockname
coding-system inhibit)
(defun mm-image-load-path (&optional package)
(let (dir result)
(dolist (path load-path (nreverse result))
- (if (file-directory-p
- (setq dir (concat (file-name-directory
- (directory-file-name path))
- "etc/" (or package "gnus/"))))
- (push dir result))
+ (when (and path
+ (file-directory-p
+ (setq dir (concat (file-name-directory
+ (directory-file-name path))
+ "etc/images/" (or package "gnus/")))))
+ (push dir result))
(push path result))))
+;; Fixme: This doesn't look useful where it's used.
(if (fboundp 'detect-coding-region)
(defun mm-detect-coding-region (start end)
"Like `detect-coding-region' except returning the best one."
(let ((coding-systems
- (detect-coding-region (point) (point-max))))
+ (detect-coding-region start end)))
(or (car-safe coding-systems)
coding-systems)))
(defun mm-detect-coding-region (start end)
(defun mm-detect-mime-charset-region (start end)
"Detect MIME charset of the text in the region between START and END."
(let ((cs (mm-detect-coding-region start end)))
- (coding-system-get cs 'mime-charset)))
+ (or (coding-system-get cs :mime-charset)
+ (coding-system-get cs 'mime-charset))))
(defun mm-detect-mime-charset-region (start end)
"Detect MIME charset of the text in the region between START and END."
(let ((cs (mm-detect-coding-region start end)))
cs)))
-(defun mm-guess-mime-charset ()
- "Guess the default MIME charset from the language environment."
- (let ((language-info
- (and (boundp 'current-language-environment)
- (assoc current-language-environment
- language-info-alist)))
- item)
- (cond
- ((null language-info)
- 'iso-8859-1)
- ((setq item
- (cadr
- (or (assq 'coding-priority language-info)
- (assq 'coding-system language-info))))
- (if (fboundp 'coding-system-get)
- (or (coding-system-get item 'mime-charset)
- item)
- item))
- ((setq item (car (last (assq 'charset language-info))))
- (if (eq item 'ascii)
- 'iso-8859-1
- (mm-mime-charset item)))
- (t
- 'iso-8859-1))))
-
-;; It is not a MIME function, but some MIME functions use it.
-(defalias 'mm-make-temp-file
- (if (fboundp 'make-temp-file)
- 'make-temp-file
- (lambda (prefix &optional dir-flag)
- (let ((file (expand-file-name
- (make-temp-name prefix)
- (if (fboundp 'temp-directory)
- (temp-directory)
- temporary-file-directory))))
- (if dir-flag
- (make-directory file))
- file))))
+(eval-when-compile
+ (unless (fboundp 'coding-system-to-mime-charset)
+ (defalias 'coding-system-to-mime-charset 'ignore)))
+
+(defun mm-coding-system-to-mime-charset (coding-system)
+ "Return the MIME charset corresponding to CODING-SYSTEM.
+To make this function work with XEmacs, the APEL package is required."
+ (when coding-system
+ (or (and (fboundp 'coding-system-get)
+ (or (coding-system-get coding-system :mime-charset)
+ (coding-system-get coding-system 'mime-charset)))
+ (and (featurep 'xemacs)
+ (or (and (fboundp 'coding-system-to-mime-charset)
+ (not (eq (symbol-function 'coding-system-to-mime-charset)
+ 'ignore)))
+ (and (condition-case nil
+ (require 'mcharset)
+ (error nil))
+ (fboundp 'coding-system-to-mime-charset)))
+ (coding-system-to-mime-charset coding-system)))))
+
+(eval-when-compile
+ (require 'jka-compr))
+
+(defun mm-decompress-buffer (filename &optional inplace force)
+ "Decompress buffer's contents, depending on jka-compr.
+Only when FORCE is t or `auto-compression-mode' is enabled and FILENAME
+agrees with `jka-compr-compression-info-list', decompression is done.
+Signal an error if FORCE is neither nil nor t and compressed data are
+not decompressed because `auto-compression-mode' is disabled.
+If INPLACE is nil, return decompressed data or nil without modifying
+the buffer. Otherwise, replace the buffer's contents with the
+decompressed data. The buffer's multibyteness must be turned off."
+ (when (and filename
+ (if force
+ (prog1 t (require 'jka-compr))
+ (and (fboundp 'jka-compr-installed-p)
+ (jka-compr-installed-p))))
+ (let ((info (jka-compr-get-compression-info filename)))
+ (when info
+ (unless (or (memq force (list nil t))
+ (jka-compr-installed-p))
+ (error ""))
+ (let ((prog (jka-compr-info-uncompress-program info))
+ (args (jka-compr-info-uncompress-args info))
+ (msg (format "%s %s..."
+ (jka-compr-info-uncompress-message info)
+ filename))
+ (err-file (jka-compr-make-temp-name))
+ (cur (current-buffer))
+ (coding-system-for-read mm-binary-coding-system)
+ (coding-system-for-write mm-binary-coding-system)
+ retval err-msg)
+ (message "%s" msg)
+ (with-temp-buffer
+ (insert-buffer-substring cur)
+ (condition-case err
+ (progn
+ (unless (memq (apply 'call-process-region
+ (point-min) (point-max)
+ prog t (list t err-file) nil args)
+ jka-compr-acceptable-retval-list)
+ (erase-buffer)
+ (insert (mapconcat
+ 'identity
+ (delete "" (split-string
+ (prog2
+ (insert-file-contents err-file)
+ (buffer-string)
+ (erase-buffer))))
+ " ")
+ "\n")
+ (setq err-msg
+ (format "Error while executing \"%s %s < %s\""
+ prog (mapconcat 'identity args " ")
+ filename)))
+ (setq retval (buffer-string)))
+ (error
+ (setq err-msg (error-message-string err)))))
+ (when (file-exists-p err-file)
+ (ignore-errors (jka-compr-delete-temp-file err-file)))
+ (when inplace
+ (unless err-msg
+ (delete-region (point-min) (point-max))
+ (insert retval))
+ (setq retval nil))
+ (message "%s" (or err-msg (concat msg "done")))
+ retval)))))
+
+(eval-when-compile
+ (unless (fboundp 'coding-system-name)
+ (defalias 'coding-system-name 'ignore))
+ (unless (fboundp 'find-file-coding-system-for-read-from-filename)
+ (defalias 'find-file-coding-system-for-read-from-filename 'ignore))
+ (unless (fboundp 'find-operation-coding-system)
+ (defalias 'find-operation-coding-system 'ignore)))
+
+(defun mm-find-buffer-file-coding-system (&optional filename)
+ "Find coding system used to decode the contents of the current buffer.
+This function looks for the coding system magic cookie or examines the
+coding system specified by `file-coding-system-alist' being associated
+with FILENAME which defaults to `buffer-file-name'. Data compressed by
+gzip, bzip2, etc. are allowed."
+ (unless filename
+ (setq filename buffer-file-name))
+ (save-excursion
+ (let ((decomp (unless ;; No worth to examine charset of tar files.
+ (and filename
+ (string-match
+ "\\.\\(?:tar\\.[^.]+\\|tbz\\|tgz\\)\\'"
+ filename))
+ (mm-decompress-buffer filename nil t))))
+ (when decomp
+ (set-buffer (let (default-enable-multibyte-characters)
+ (generate-new-buffer " *temp*")))
+ (insert decomp)
+ (setq filename (file-name-sans-extension filename)))
+ (goto-char (point-min))
+ (prog1
+ (cond
+ ((boundp 'set-auto-coding-function) ;; Emacs
+ (if filename
+ (or (funcall (symbol-value 'set-auto-coding-function)
+ filename (- (point-max) (point-min)))
+ (car (find-operation-coding-system 'insert-file-contents
+ filename)))
+ (let (auto-coding-alist)
+ (condition-case nil
+ (funcall (symbol-value 'set-auto-coding-function)
+ nil (- (point-max) (point-min)))
+ (error nil)))))
+ ((featurep 'file-coding) ;; XEmacs
+ (let ((case-fold-search t)
+ (end (point-at-eol))
+ codesys start)
+ (or
+ (and (re-search-forward "-\\*-+[\t ]*" end t)
+ (progn
+ (setq start (match-end 0))
+ (re-search-forward "[\t ]*-+\\*-" end t))
+ (progn
+ (setq end (match-beginning 0))
+ (goto-char start)
+ (or (looking-at "coding:[\t ]*\\([^\t ;]+\\)")
+ (re-search-forward
+ "[\t ;]+coding:[\t ]*\\([^\t ;]+\\)"
+ end t)))
+ (find-coding-system (setq codesys
+ (intern (match-string 1))))
+ codesys)
+ (and (re-search-forward "^[\t ]*;+[\t ]*Local[\t ]+Variables:"
+ nil t)
+ (progn
+ (setq start (match-end 0))
+ (re-search-forward "^[\t ]*;+[\t ]*End:" nil t))
+ (progn
+ (setq end (match-beginning 0))
+ (goto-char start)
+ (re-search-forward
+ "^[\t ]*;+[\t ]*coding:[\t ]*\\([^\t\n\r ]+\\)"
+ end t))
+ (find-coding-system (setq codesys
+ (intern (match-string 1))))
+ codesys)
+ (and (progn
+ (goto-char (point-min))
+ (setq case-fold-search nil)
+ (re-search-forward "^;;;coding system: "
+ ;;(+ (point-min) 3000) t))
+ nil t))
+ (looking-at "[^\t\n\r ]+")
+ (find-coding-system
+ (setq codesys (intern (match-string 0))))
+ codesys)
+ (and filename
+ (setq codesys
+ (find-file-coding-system-for-read-from-filename
+ filename))
+ (coding-system-name (coding-system-base codesys)))))))
+ (when decomp
+ (kill-buffer (current-buffer)))))))
(provide 'mm-util)
+;; arch-tag: 94dc5388-825d-4fd1-bfa5-2100aa351238
;;; mm-util.el ends here