;;; mm-util.el --- Utility functions for Mule and low level things
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+;; 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
+;; For Emacs <22.2 and XEmacs.
+(eval-and-compile
+ (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
+
(eval-when-compile (require 'cl))
(require 'mail-prsvr)
(require 'timer)))
(defvar mm-mime-mule-charset-alist )
-
+;; Note this is not presently used on Emacs >= 23, which is good,
+;; since it means standalone message-mode (which requires mml and
+;; hence mml-util) does not load gnus-util.
+(autoload 'gnus-completing-read "gnus-util")
+
+;; Emulate functions that are not available in every (X)Emacs version.
+;; The name of a function is prefixed with mm-, like `mm-char-int' for
+;; `char-int' that is a native XEmacs function, not available in Emacs.
+;; Gnus programs all should use mm- functions, not the original ones.
(eval-and-compile
(mapc
(lambda (elem)
(if (fboundp (car elem))
(defalias nfunc (car elem))
(defalias nfunc (cdr elem)))))
- '((coding-system-list . ignore)
+ `(;; `coding-system-list' is not available in XEmacs 21.4 built
+ ;; without the `file-coding' feature.
+ (coding-system-list . ignore)
+ ;; `char-int' is an XEmacs function, not available in Emacs.
(char-int . identity)
+ ;; `coding-system-equal' is an Emacs function, not available in XEmacs.
(coding-system-equal . equal)
+ ;; `annotationp' is an XEmacs function, not available in Emacs.
(annotationp . ignore)
+ ;; `set-buffer-file-coding-system' is not available in XEmacs 21.4
+ ;; built without the `file-coding' feature.
(set-buffer-file-coding-system . ignore)
+ ;; `read-charset' is an Emacs function, not available in XEmacs.
(read-charset
- . (lambda (prompt)
- "Return a charset."
- (intern
- (completing-read
- prompt
- (mapcar (lambda (e) (list (symbol-name (car e))))
- mm-mime-mule-charset-alist)
- nil t))))
+ . ,(lambda (prompt)
+ "Return a charset."
+ (intern
+ (gnus-completing-read
+ prompt
+ (mapcar (lambda (e) (symbol-name (car e)))
+ mm-mime-mule-charset-alist)
+ t))))
+ ;; `subst-char-in-string' is not available in XEmacs 21.4.
(subst-char-in-string
- . (lambda (from to string &optional inplace)
- ;; stolen (and renamed) from nnheader.el
- "Replace characters in STRING from FROM to TO.
+ . ,(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.
- (while (< idx len)
- (when (= (aref string idx) from)
- (aset string idx to))
- (setq idx (1+ idx)))
- string)))
+ (let ((string (if inplace string (copy-sequence string)))
+ (len (length string))
+ (idx 0))
+ ;; Replace all occurrences of FROM with TO.
+ (while (< idx len)
+ (when (= (aref string idx) from)
+ (aset string idx to))
+ (setq idx (1+ idx)))
+ string)))
+ ;; `replace-in-string' is an XEmacs function, not available in Emacs.
(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)))
+ . ,(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' is an Emacs function, not available in XEmacs.
(string-as-unibyte . identity)
+ ;; `string-make-unibyte' is an Emacs function, not available in XEmacs.
(string-make-unibyte . identity)
;; string-as-multibyte often doesn't really do what you think it does.
;; Example:
;; (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' is an Emacs function, not available in XEmacs.
(string-as-multibyte . identity)
+ ;; `multibyte-string-p' is an Emacs function, not available in XEmacs.
(multibyte-string-p . ignore)
+ ;; `insert-byte' is available only in Emacs 23.1 or greater.
(insert-byte . insert-char)
+ ;; `multibyte-char-to-unibyte' is an Emacs function, not available
+ ;; in XEmacs.
(multibyte-char-to-unibyte . identity)
+ ;; `set-buffer-multibyte' is an Emacs function, not available in XEmacs.
+ (set-buffer-multibyte . ignore)
+ ;; `special-display-p' is an Emacs function, not available in XEmacs.
(special-display-p
- . (lambda (buffer-name)
- "Returns non-nil if a buffer named BUFFER-NAME gets a special frame."
- (and special-display-function
- (or (and (member buffer-name special-display-buffer-names) t)
- (cdr (assoc buffer-name special-display-buffer-names))
- (catch 'return
- (dolist (elem special-display-regexps)
- (and (stringp elem)
- (string-match elem buffer-name)
- (throw 'return t))
- (and (consp elem)
- (stringp (car elem))
- (string-match (car elem) buffer-name)
- (throw 'return (cdr elem))))))))))))
-
+ . ,(lambda (buffer-name)
+ "Returns non-nil if a buffer named BUFFER-NAME gets a special frame."
+ (and special-display-function
+ (or (and (member buffer-name special-display-buffer-names) t)
+ (cdr (assoc buffer-name special-display-buffer-names))
+ (catch 'return
+ (dolist (elem special-display-regexps)
+ (and (stringp elem)
+ (string-match elem buffer-name)
+ (throw 'return t))
+ (and (consp elem)
+ (stringp (car elem))
+ (string-match (car elem) buffer-name)
+ (throw 'return (cdr elem)))))))))
+ ;; `substring-no-properties' is available only in Emacs 22.1 or greater.
+ (substring-no-properties
+ . ,(lambda (string &optional from to)
+ "Return a substring of STRING, without text properties.
+It starts at index FROM and ending before TO.
+TO may be nil or omitted; then the substring runs to the end of STRING.
+If FROM is nil or omitted, the substring starts at the beginning of STRING.
+If FROM or TO is negative, it counts from the end.
+
+With one argument, just copy STRING without its properties."
+ (setq string (substring string (or from 0) to))
+ (set-text-properties 0 (length string) nil string)
+ string))
+ ;; `line-number-at-pos' is available only in Emacs 22.1 or greater
+ ;; and XEmacs 21.5.
+ (line-number-at-pos
+ . ,(lambda (&optional pos)
+ "Return (narrowed) buffer line number at position POS.
+If POS is nil, use current buffer location.
+Counting starts at (point-min), so the value refers
+to the contents of the accessible portion of the buffer."
+ (let ((opoint (or pos (point))) start)
+ (save-excursion
+ (goto-char (point-min))
+ (setq start (point))
+ (goto-char opoint)
+ (forward-line 0)
+ (1+ (count-lines start (point))))))))))
+
+;; `decode-coding-string', `encode-coding-string', `decode-coding-region'
+;; and `encode-coding-region' are available in Emacs and XEmacs built with
+;; the `file-coding' feature, but the XEmacs versions treat nil, that is
+;; given as the `coding-system' argument, as the `binary' coding system.
(eval-and-compile
(if (featurep 'xemacs)
(if (featurep 'file-coding)
- ;; Don't modify string if CODING-SYSTEM is nil.
(progn
(defun mm-decode-coding-string (str coding-system)
(if coding-system
(defalias 'mm-decode-coding-region 'decode-coding-region)
(defalias 'mm-encode-coding-region 'encode-coding-region)))
-(defalias 'mm-string-to-multibyte
- (cond
- ((featurep 'xemacs)
- 'identity)
- ((fboundp 'string-to-multibyte)
- 'string-to-multibyte)
- (t
- (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 "")))))
+;; `string-to-multibyte' is available only in Emacs.
+(defalias 'mm-string-to-multibyte (if (featurep 'xemacs)
+ 'identity
+ 'string-to-multibyte))
+;; `char-or-char-int-p' is an XEmacs function, not available in Emacs.
(eval-and-compile
(defalias 'mm-char-or-char-int-p
(cond
((fboundp 'char-valid-p) 'char-valid-p)
(t 'identity))))
+;; `ucs-to-char' is a function that Mule-UCS provides.
+(eval-and-compile
+ (if (featurep 'xemacs)
+ (cond ((and (fboundp 'unicode-to-char) ;; XEmacs 21.5.
+ (subrp (symbol-function 'unicode-to-char)))
+ (if (featurep 'mule)
+ (defalias 'mm-ucs-to-char 'unicode-to-char)
+ (defun mm-ucs-to-char (codepoint)
+ "Convert Unicode codepoint to character."
+ (or (unicode-to-char codepoint) ?#))))
+ ((featurep 'mule)
+ (defun mm-ucs-to-char (codepoint)
+ "Convert Unicode codepoint to character."
+ (if (fboundp 'ucs-to-char) ;; Mule-UCS is loaded.
+ (progn
+ (defalias 'mm-ucs-to-char
+ (lambda (codepoint)
+ "Convert Unicode codepoint to character."
+ (condition-case nil
+ (or (ucs-to-char codepoint) ?#)
+ (error ?#))))
+ (mm-ucs-to-char codepoint))
+ (condition-case nil
+ (or (int-to-char codepoint) ?#)
+ (error ?#)))))
+ (t
+ (defun mm-ucs-to-char (codepoint)
+ "Convert Unicode codepoint to character."
+ (condition-case nil
+ (or (int-to-char codepoint) ?#)
+ (error ?#)))))
+ (if (let ((char (make-char 'japanese-jisx0208 36 34)))
+ (eq char (decode-char 'ucs char)))
+ ;; Emacs 23.
+ (defalias 'mm-ucs-to-char 'identity)
+ (defun mm-ucs-to-char (codepoint)
+ "Convert Unicode codepoint to character."
+ (or (decode-char 'ucs codepoint) ?#)))))
+
;; 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
;; Actually, there should be an `mm-coding-system-mime-charset'.
(eval-and-compile
(defalias 'mm-read-coding-system
- (cond
- ((fboundp 'read-coding-system)
- (if (and (featurep 'xemacs)
- (<= (string-to-number emacs-version) 21.1))
- (lambda (prompt &optional default-coding-system)
- (read-coding-system prompt))
- 'read-coding-system))
- (t (lambda (prompt &optional default-coding-system)
- "Prompt the user for a coding system."
- (completing-read
- prompt (mapcar (lambda (s) (list (symbol-name (car s))))
- mm-mime-mule-charset-alist)))))))
+ (if (featurep 'emacs) 'read-coding-system
+ (cond
+ ((fboundp 'read-coding-system)
+ (if (and (featurep 'xemacs)
+ (<= (string-to-number emacs-version) 21.1))
+ (lambda (prompt &optional default-coding-system)
+ (read-coding-system prompt))
+ 'read-coding-system))
+ (t (lambda (prompt &optional default-coding-system)
+ "Prompt the user for a coding system."
+ (gnus-completing-read
+ prompt (mapcar (lambda (s) (symbol-name (car s)))
+ mm-mime-mule-charset-alist))))))))
(defvar mm-coding-system-list nil)
(defun mm-get-coding-system-list ()
the alias. Else windows-NUMBER is used."
(interactive
(let ((completion-ignore-case t)
- (candidates (cp-supported-codepages)))
- (list (completing-read "Setup DOS Codepage: (default 437) " candidates
- nil t nil nil "437"))))
+ (candidates (if (fboundp 'cp-supported-codepages)
+ (cp-supported-codepages)
+ ;; Removed in Emacs 23 (unicode), so signal an error:
+ (error "`codepage-setup' not present in this Emacs version"))))
+ (list (gnus-completing-read "Setup DOS Codepage" candidates
+ t nil nil "437"))))
(when alias
(setq alias (if (stringp alias)
(intern alias)
(intern (format "windows-%s" number)))))
(let* ((cp (intern (format "cp%s" number))))
(unless (mm-coding-system-p cp)
- (codepage-setup number))
+ (if (fboundp 'codepage-setup) ; silence compiler
+ (codepage-setup number)
+ (error "`codepage-setup' not present in this Emacs version")))
(when (and alias
;; Don't add alias if setup of cp failed.
(mm-coding-system-p cp))
,@(when (and (not (mm-coding-system-p 'gbk))
(mm-coding-system-p 'cp936))
'((gbk . cp936)))
+ ;; UTF8 is a bogus name for UTF-8
+ ,@(when (and (not (mm-coding-system-p 'utf8))
+ (mm-coding-system-p 'utf-8))
+ '((utf8 . utf-8)))
;; ISO8859-1 is a bogus name for ISO-8859-1
,@(when (and (not (mm-coding-system-p 'iso8859-1))
(mm-coding-system-p 'iso-8859-1))
'((iso8859-1 . iso-8859-1)))
+ ;; ISO_8859-1 is a bogus name for ISO-8859-1
+ ,@(when (and (not (mm-coding-system-p 'iso_8859-1))
+ (mm-coding-system-p 'iso-8859-1))
+ '((iso_8859-1 . iso-8859-1)))
)
"A mapping from unknown or invalid charset names to the real charset names.
(defcustom mm-codepage-iso-8859-list
(list 1250 ;; Windows-1250 is a variant of Latin-2 heavily used by Microsoft
;; Outlook users in Czech republic. Use this to allow reading of
- ;; their e-mails. cp1250 should be defined by M-x codepage-setup
- ;; (Emacs 21).
+ ;; their e-mails.
'(1252 . 1) ;; Windows-1252 is a superset of iso-8859-1 (West
;; Europe). See also `gnus-article-dumbquotes-map'.
'(1254 . 9) ;; Windows-1254 is a superset of iso-8859-9 (Turkish).
(mm-setup-codepage-iso-8859)
(mm-setup-codepage-ibm)
-(defcustom mm-charset-override-alist
- '((iso-8859-1 . windows-1252)
- (iso-8859-8 . windows-1255)
- (iso-8859-9 . windows-1254))
- "A mapping from undesired charset names to their replacement.
-
-You may add pairs like (iso-8859-1 . windows-1252) here,
-i.e. treat iso-8859-1 as windows-1252. windows-1252 is a
-superset of iso-8859-1."
- :type '(list (set :inline t
- (const (iso-8859-1 . windows-1252))
- (const (iso-8859-8 . windows-1255))
- (const (iso-8859-9 . windows-1254))
- (const (undecided . windows-1252)))
- (repeat :inline t
- :tag "Other options"
- (cons (symbol :tag "From charset")
- (symbol :tag "To charset"))))
- :version "22.1" ;; Gnus 5.10.9
- :group 'mime)
-
+;; Note: this has to be defined before `mm-charset-to-coding-system'.
(defcustom mm-charset-eval-alist
(if (featurep 'xemacs)
nil ;; I don't know what would be useful for XEmacs.
- '(;; Emacs 21 offers 1250 1251 1253 1257. Emacs 22 provides autoloads for
- ;; 1250-1258 (i.e. `mm-codepage-setup' does nothing).
+ '(;; Emacs 22 provides autoloads for 1250-1258
+ ;; (i.e. `mm-codepage-setup' does nothing).
(windows-1250 . (mm-codepage-setup 1250 t))
(windows-1251 . (mm-codepage-setup 1251 t))
(windows-1253 . (mm-codepage-setup 1253 t))
:group 'mime)
(put 'mm-charset-eval-alist 'risky-local-variable t)
+(defvar mm-charset-override-alist)
+
+;; Note: this function has to be defined before `mm-charset-override-alist'
+;; since it will use this function in order to determine its default value
+;; when loading mm-util.elc.
+(defun mm-charset-to-coding-system (charset &optional lbt
+ allow-override silent)
+ "Return coding-system corresponding to CHARSET.
+CHARSET is a symbol naming a MIME charset.
+If optional argument LBT (`unix', `dos' or `mac') is specified, it is
+used as the line break code type of the coding system.
+
+If ALLOW-OVERRIDE is given, use `mm-charset-override-alist' to
+map undesired charset names to their replacement. This should
+only be used for decoding, not for encoding.
+
+A non-nil value of SILENT means don't issue a warning even if CHARSET
+is not available."
+ ;; OVERRIDE is used (only) in `mm-decode-body' and `mm-decode-string'.
+ (when (stringp charset)
+ (setq charset (intern (downcase charset))))
+ (when lbt
+ (setq charset (intern (format "%s-%s" charset lbt))))
+ (cond
+ ((null charset)
+ charset)
+ ;; Running in a non-MULE environment.
+ ((or (null (mm-get-coding-system-list))
+ (not (fboundp 'coding-system-get)))
+ charset)
+ ;; Check override list quite early. Should only used for decoding, not for
+ ;; encoding!
+ ((and allow-override
+ (let ((cs (cdr (assq charset mm-charset-override-alist))))
+ (and cs (mm-coding-system-p cs) cs))))
+ ;; ascii
+ ((eq charset 'us-ascii)
+ 'ascii)
+ ;; Check to see whether we can handle this charset. (This depends
+ ;; on there being some coding system matching each `mime-charset'
+ ;; property defined, as there should be.)
+ ((and (mm-coding-system-p charset)
+;;; Doing this would potentially weed out incorrect charsets.
+;;; charset
+;;; (eq charset (coding-system-get charset 'mime-charset))
+ )
+ charset)
+ ;; Use coding system Emacs knows.
+ ((and (fboundp 'coding-system-from-name)
+ (coding-system-from-name charset)))
+ ;; Eval expressions from `mm-charset-eval-alist'
+ ((let* ((el (assq charset mm-charset-eval-alist))
+ (cs (car el))
+ (form (cdr el)))
+ (and cs
+ form
+ (prog2
+ ;; Avoid errors...
+ (condition-case nil (eval form) (error nil))
+ ;; (message "Failed to eval `%s'" form))
+ (mm-coding-system-p cs)
+ (message "Added charset `%s' via `mm-charset-eval-alist'" cs))
+ cs)))
+ ;; Translate invalid charsets.
+ ((let ((cs (cdr (assq charset mm-charset-synonym-alist))))
+ (and cs
+ (mm-coding-system-p cs)
+ ;; (message
+ ;; "Using synonym `%s' from `mm-charset-synonym-alist' for `%s'"
+ ;; cs charset)
+ cs)))
+ ;; Last resort: search the coding system list for entries which
+ ;; have the right mime-charset in case the canonical name isn't
+ ;; defined (though it should be).
+ ((let (cs)
+ ;; mm-get-coding-system-list returns a list of cs without lbt.
+ ;; Do we need -lbt?
+ (dolist (c (mm-get-coding-system-list))
+ (if (and (null cs)
+ (eq charset (or (coding-system-get c :mime-charset)
+ (coding-system-get c 'mime-charset))))
+ (setq cs c)))
+ (unless (or silent cs)
+ ;; Warn the user about unknown charset:
+ (if (fboundp 'gnus-message)
+ (gnus-message 7 "Unknown charset: %s" charset)
+ (message "Unknown charset: %s" charset)))
+ cs))))
+
+;; Note: `mm-charset-to-coding-system' has to be defined before this.
+(defcustom mm-charset-override-alist
+ ;; Note: pairs that cannot be used in the Emacs version currently running
+ ;; will be removed.
+ '((gb2312 . gbk)
+ (iso-8859-1 . windows-1252)
+ (iso-8859-8 . windows-1255)
+ (iso-8859-9 . windows-1254))
+ "A mapping from undesired charset names to their replacement.
+
+You may add pairs like (iso-8859-1 . windows-1252) here,
+i.e. treat iso-8859-1 as windows-1252. windows-1252 is a
+superset of iso-8859-1."
+ :type
+ '(list
+ :convert-widget
+ (lambda (widget)
+ (let ((defaults
+ (delq nil
+ (mapcar (lambda (pair)
+ (if (mm-charset-to-coding-system (cdr pair)
+ nil nil t)
+ pair))
+ '((gb2312 . gbk)
+ (iso-8859-1 . windows-1252)
+ (iso-8859-8 . windows-1255)
+ (iso-8859-9 . windows-1254)
+ (undecided . windows-1252)))))
+ (val (copy-sequence (default-value 'mm-charset-override-alist)))
+ pair rest)
+ (while val
+ (push (if (and (prog1
+ (setq pair (assq (caar val) defaults))
+ (setq defaults (delq pair defaults)))
+ (equal (car val) pair))
+ `(const ,pair)
+ `(cons :format "%v"
+ (const :format "(%v" ,(caar val))
+ (symbol :size 3 :format " . %v)\n" ,(cdar val))))
+ rest)
+ (setq val (cdr val)))
+ (while defaults
+ (push `(const ,(pop defaults)) rest))
+ (widget-convert
+ 'list
+ `(set :inline t :format "%v" ,@(nreverse rest))
+ `(repeat :inline t :tag "Other options"
+ (cons :format "%v"
+ (symbol :size 3 :format "(%v")
+ (symbol :size 3 :format " . %v)\n")))))))
+ ;; Remove pairs that cannot be used in the Emacs version currently
+ ;; running. Note that this section will be evaluated when loading
+ ;; mm-util.elc.
+ :set (lambda (symbol value)
+ (custom-set-default
+ symbol (delq nil
+ (mapcar (lambda (pair)
+ (if (mm-charset-to-coding-system (cdr pair)
+ nil nil t)
+ pair))
+ value))))
+ :version "22.1" ;; Gnus 5.10.9
+ :group 'mime)
+
(defvar mm-binary-coding-system
(cond
((mm-coding-system-p 'binary) 'binary)
"100% binary coding system.")
(defvar mm-text-coding-system
- (or (if (memq system-type '(windows-nt ms-dos ms-windows))
+ (or (if (memq system-type '(windows-nt ms-dos))
(and (mm-coding-system-p 'raw-text-dos) 'raw-text-dos)
(and (mm-coding-system-p 'raw-text) 'raw-text))
mm-binary-coding-system)
(defvar mm-auto-save-coding-system
(cond
((mm-coding-system-p 'utf-8-emacs) ; Mule 7
- (if (memq system-type '(windows-nt ms-dos ms-windows))
+ (if (memq system-type '(windows-nt ms-dos))
(if (mm-coding-system-p 'utf-8-emacs-dos)
'utf-8-emacs-dos mm-binary-coding-system)
'utf-8-emacs))
((mm-coding-system-p 'emacs-mule)
- (if (memq system-type '(windows-nt ms-dos ms-windows))
+ (if (memq system-type '(windows-nt ms-dos))
(if (mm-coding-system-p 'emacs-mule-dos)
'emacs-mule-dos mm-binary-coding-system)
'emacs-mule))
(iso-2022-jp latin-jisx0201 japanese-jisx0208 japanese-jisx0208-1978)
(euc-kr korean-ksc5601)
(gb2312 chinese-gb2312)
+ (gbk chinese-gbk)
+ (gb18030 gb18030-2-byte
+ gb18030-4-byte-bmp gb18030-4-byte-smp
+ gb18030-4-byte-ext-1 gb18030-4-byte-ext-2)
(big5 chinese-big5-1 chinese-big5-2)
(tibetan tibetan)
(thai-tis620 thai-tis620)
cs mime mule alist)
(while css
(setq cs (pop css)
- mime (or (coding-system-get cs :mime-charset) ; Emacs 23 (unicode)
+ mime (or (coding-system-get cs :mime-charset); Emacs 23 (unicode)
(coding-system-get cs 'mime-charset)))
(when (and mime
(not (eq t (setq mule
"A table of the difference character between ISO-8859-X and ISO-8859-15.")
(defcustom mm-coding-system-priorities
- (if (boundp 'current-language-environment)
- (let ((lang (symbol-value 'current-language-environment)))
- (cond ((string= lang "Japanese")
- ;; 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)))))
+ (let ((lang (if (boundp 'current-language-environment)
+ (symbol-value 'current-language-environment))))
+ (cond (;; XEmacs without Mule but with `file-coding'.
+ (not lang) nil)
+ ;; In XEmacs 21.5 it may be the one like "Japanese (UTF-8)".
+ ((string-match "\\`Japanese" lang)
+ ;; 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.
Setting it to nil is useful on Emacsen supporting Unicode if sending
mail with multiple parts is preferred to sending a Unicode one.")
+(defvar mm-extra-numeric-entities
+ (mapcar
+ (lambda (item)
+ (cons (car item) (mm-ucs-to-char (cdr item))))
+ '((#x80 . #x20AC) (#x82 . #x201A) (#x83 . #x0192) (#x84 . #x201E)
+ (#x85 . #x2026) (#x86 . #x2020) (#x87 . #x2021) (#x88 . #x02C6)
+ (#x89 . #x2030) (#x8A . #x0160) (#x8B . #x2039) (#x8C . #x0152)
+ (#x8E . #x017D) (#x91 . #x2018) (#x92 . #x2019) (#x93 . #x201C)
+ (#x94 . #x201D) (#x95 . #x2022) (#x96 . #x2013) (#x97 . #x2014)
+ (#x98 . #x02DC) (#x99 . #x2122) (#x9A . #x0161) (#x9B . #x203A)
+ (#x9C . #x0153) (#x9E . #x017E) (#x9F . #x0178)))
+ "*Alist of extra numeric entities and characters other than ISO 10646.
+This table is used for decoding extra numeric entities to characters,
+like \"€\" to the euro sign, mainly in html messages.")
+
;;; Internal variables:
;;; Functions:
(pop alist))
out)))
-(defun mm-charset-to-coding-system (charset &optional lbt
- allow-override)
- "Return coding-system corresponding to CHARSET.
-CHARSET is a symbol naming a MIME charset.
-If optional argument LBT (`unix', `dos' or `mac') is specified, it is
-used as the line break code type of the coding system.
-
-If ALLOW-OVERRIDE is given, use `mm-charset-override-alist' to
-map undesired charset names to their replacement. This should
-only be used for decoding, not for encoding."
- ;; OVERRIDE is used (only) in `mm-decode-body' and `mm-decode-string'.
- (when (stringp charset)
- (setq charset (intern (downcase charset))))
- (when lbt
- (setq charset (intern (format "%s-%s" charset lbt))))
- (cond
- ((null charset)
- charset)
- ;; Running in a non-MULE environment.
- ((or (null (mm-get-coding-system-list))
- (not (fboundp 'coding-system-get)))
- charset)
- ;; Check override list quite early. Should only used for decoding, not for
- ;; encoding!
- ((and allow-override
- (let ((cs (cdr (assq charset mm-charset-override-alist))))
- (and cs (mm-coding-system-p cs) cs))))
- ;; ascii
- ((eq charset 'us-ascii)
- 'ascii)
- ;; Check to see whether we can handle this charset. (This depends
- ;; on there being some coding system matching each `mime-charset'
- ;; property defined, as there should be.)
- ((and (mm-coding-system-p charset)
-;;; Doing this would potentially weed out incorrect charsets.
-;;; charset
-;;; (eq charset (coding-system-get charset 'mime-charset))
- )
- charset)
- ;; Eval expressions from `mm-charset-eval-alist'
- ((let* ((el (assq charset mm-charset-eval-alist))
- (cs (car el))
- (form (cdr el)))
- (and cs
- form
- (prog2
- ;; Avoid errors...
- (condition-case nil (eval form) (error nil))
- ;; (message "Failed to eval `%s'" form))
- (mm-coding-system-p cs)
- (message "Added charset `%s' via `mm-charset-eval-alist'" cs))
- cs)))
- ;; Translate invalid charsets.
- ((let ((cs (cdr (assq charset mm-charset-synonym-alist))))
- (and cs
- (mm-coding-system-p cs)
- ;; (message
- ;; "Using synonym `%s' from `mm-charset-synonym-alist' for `%s'"
- ;; cs charset)
- cs)))
- ;; Last resort: search the coding system list for entries which
- ;; have the right mime-charset in case the canonical name isn't
- ;; defined (though it should be).
- ((let (cs)
- ;; mm-get-coding-system-list returns a list of cs without lbt.
- ;; Do we need -lbt?
- (dolist (c (mm-get-coding-system-list))
- (if (and (null cs)
- (eq charset (or (coding-system-get c :mime-charset)
- (coding-system-get c 'mime-charset))))
- (setq cs c)))
- (unless cs
- ;; Warn the user about unknown charset:
- (if (fboundp 'gnus-message)
- (gnus-message 7 "Unknown charset: %s" charset)
- (message "Unknown charset: %s" charset)))
- cs))))
-
(eval-and-compile
- (defvar mm-emacs-mule (and (not (featurep 'xemacs))
- (boundp 'default-enable-multibyte-characters)
- default-enable-multibyte-characters
- (fboundp 'set-buffer-multibyte))
- "True in Emacs with Mule.")
-
- (if mm-emacs-mule
- (defun mm-enable-multibyte ()
- "Set the multibyte flag of the current buffer.
+ (if (featurep 'xemacs)
+ (defalias 'mm-enable-multibyte 'ignore)
+ (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 'to))
- (defalias 'mm-enable-multibyte 'ignore))
+ (set-buffer-multibyte 'to)))
- (if mm-emacs-mule
- (defun mm-disable-multibyte ()
- "Unset the multibyte flag of in the current buffer.
+ (if (featurep 'xemacs)
+ (defalias 'mm-disable-multibyte 'ignore)
+ (defun mm-disable-multibyte ()
+ "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)))
+ (set-buffer-multibyte nil))))
(defun mm-preferred-coding-system (charset)
;; A typo in some Emacs versions.
(if (eq charset 'unknown)
(error "The message contains non-printable characters, please use attachment"))
(if (and (fboundp 'coding-system-get) (fboundp 'get-charset-property))
- ;; This exists in Emacs 20.
(or
(and (mm-preferred-coding-system charset)
(or (coding-system-get
;; This is for XEmacs.
(mm-mule-charset-to-mime-charset charset)))
+;; `delete-dups' is not available in XEmacs 21.4.
(if (fboundp 'delete-dups)
(defalias 'mm-delete-duplicates 'delete-dups)
(defun mm-delete-duplicates (list)
"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
+ (if (boundp 'enable-multibyte-characters)
+ (default-value 'enable-multibyte-characters)
t)))
(defun mm-iso-8859-x-to-15-region (&optional b e)
(when (featurep 'xemacs)
`(and (featurep 'mule) (mm-xemacs-find-mime-charset-1 ,begin ,end))))
+(declare-function mm-delete-duplicates "mm-util" (list))
+
(defun mm-find-mime-charset-region (b e &optional hack-charsets)
"Return the MIME charsets needed to encode the region between B and E.
nil means ASCII, a single-element list represents an appropriate MIME
;; Otherwise, we'll get nil, and the next setq will get invoked.
(setq charsets (mm-xemacs-find-mime-charset b e))
+ ;; Fixme: won't work for unibyte Emacs 23:
+
;; We're not multibyte, or a single coding system won't cover it.
(setq charsets
(mm-delete-duplicates
(defmacro mm-with-unibyte-buffer (&rest forms)
"Create a temporary buffer, and evaluate FORMS there like `progn'.
Use unibyte mode for this."
- `(let (default-enable-multibyte-characters)
- (with-temp-buffer ,@forms)))
+ `(with-temp-buffer
+ (mm-disable-multibyte)
+ ,@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)))
+ `(with-temp-buffer
+ (mm-enable-multibyte)
+ ,@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.
-Equivalent to `progn' in XEmacs
-
-NOTE: Use this macro with caution in multibyte buffers (it is not
-worth using this macro in unibyte buffers of course). Use of
-`(set-buffer-multibyte t)', which is run finally, is generally
-harmful since it is likely to modify existing data in the buffer.
-For instance, it converts \"\\300\\255\" into \"\\255\" in
-Emacs 23 (unicode)."
- (let ((multibyte (make-symbol "multibyte"))
- (buffer (make-symbol "buffer")))
- `(if mm-emacs-mule
- (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))))
+Equivalent to `progn' in XEmacs.
+
+Note: We recommend not using this macro any more; there should be
+better ways to do a similar thing. The previous version of this macro
+bound the default value of `enable-multibyte-characters' to nil while
+evaluating FORMS but it is no longer done. So, some programs assuming
+it if any may malfunction."
+ (if (featurep 'xemacs)
+ `(progn ,@forms)
+ (let ((multibyte (make-symbol "multibyte")))
+ `(let ((,multibyte enable-multibyte-characters))
+ (when ,multibyte
+ (set-buffer-multibyte nil))
+ (prog1
+ (progn ,@forms)
+ (when ,multibyte
+ (set-buffer-multibyte t)))))))
(put 'mm-with-unibyte-current-buffer 'lisp-indent-function 0)
(put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
-(defmacro mm-with-unibyte (&rest forms)
- "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
`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)
- (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)))
+ (letf* ((format-alist nil)
+ (auto-mode-alist (if inhibit nil (mm-auto-mode-alist)))
+ ((default-value '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)
inhibit-file-name-handlers)))
(write-region start end filename append visit lockname)))
+(autoload 'gmm-write-region "gmm-utils")
+
;; It is not a MIME function, but some MIME functions use it.
(if (and (fboundp 'make-temp-file)
(ignore-errors
;; Reset the umask.
(set-default-file-modes umask)))))
+(defvar mm-image-load-path-cache nil)
+
(defun mm-image-load-path (&optional package)
- (let (dir result)
- (dolist (path load-path (nreverse 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))))
+ (if (and mm-image-load-path-cache
+ (equal load-path (car mm-image-load-path-cache)))
+ (cdr mm-image-load-path-cache)
+ (let (dir result)
+ (dolist (path load-path)
+ (when (and path
+ (file-directory-p
+ (setq dir (concat (file-name-directory
+ (directory-file-name path))
+ "etc/images/" (or package "gnus/")))))
+ (push dir result)))
+ (setq result (nreverse result)
+ mm-image-load-path-cache (cons load-path result))
+ result)))
;; Fixme: This doesn't look useful where it's used.
(if (fboundp 'detect-coding-region)
(if (eq (point) end) 'ascii (mm-guess-charset))
(goto-char point)))))
+(declare-function mm-detect-coding-region "mm-util" (start end))
+
(if (fboundp 'coding-system-get)
(defun mm-detect-mime-charset-region (start end)
"Detect MIME charset of the text in the region between START and END."
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))))
- " ")
+ (insert (mapconcat 'identity
+ (split-string
+ (prog2
+ (insert-file-contents err-file)
+ (buffer-string)
+ (erase-buffer)) t)
+ " ")
"\n")
(setq err-msg
(format "Error while executing \"%s %s < %s\""
(error
(setq err-msg (error-message-string err)))))
(when (file-exists-p err-file)
- (ignore-errors (jka-compr-delete-temp-file err-file)))
+ (ignore-errors (delete-file err-file)))
(when inplace
(unless err-msg
(delete-region (point-min) (point-max))
filename))
(mm-decompress-buffer filename nil t))))
(when decomp
- (set-buffer (let (default-enable-multibyte-characters)
- (generate-new-buffer " *temp*")))
+ (set-buffer (generate-new-buffer " *temp*"))
+ (mm-disable-multibyte)
(insert decomp)
(setq filename (file-name-sans-extension filename)))
(goto-char (point-min))
(provide 'mm-util)
-;; arch-tag: 94dc5388-825d-4fd1-bfa5-2100aa351238
;;; mm-util.el ends here
projects / gnus / blobdiff