diff options
Diffstat (limited to 'lisp')
| -rw-r--r-- | lisp/gnus/ChangeLog | 15 | ||||
| -rw-r--r-- | lisp/gnus/mm-bodies.el | 13 | ||||
| -rw-r--r-- | lisp/gnus/mm-util.el | 121 |
3 files changed, 142 insertions, 7 deletions
diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog index 50a7262e1a3..09dbe9e0027 100644 --- a/lisp/gnus/ChangeLog +++ b/lisp/gnus/ChangeLog @@ -1,5 +1,20 @@ 2006-04-17 Reiner Steib <Reiner.Steib@gmx.de> + [ Merge from Gnus trunk. ] + + * mm-util.el (mm-charset-synonym-alist): Improve doc string. + (mm-charset-override-alist): New variable. + (mm-charset-to-coding-system): Use it. + (mm-codepage-setup): New helper function. + (mm-charset-eval-alist): New variable. + (mm-charset-to-coding-system): Use mm-charset-eval-alist. Warn + about unknown charsets. Add allow-override. Use + `mm-charset-override-alist' only when decoding. + (mm-detect-mime-charset-region): Use :mime-charset. + + * mm-bodies.el (mm-decode-body, mm-decode-string): Call + `mm-charset-to-coding-system' with allow-override argument. + * message.el (message-tool-bar-zap-list, message-tool-bar) (message-tool-bar-gnome, message-tool-bar-retro): New variables. (message-tool-bar-local-item-from-menu): Remove. diff --git a/lisp/gnus/mm-bodies.el b/lisp/gnus/mm-bodies.el index c58eb6bd41d..a10b8b28399 100644 --- a/lisp/gnus/mm-bodies.el +++ b/lisp/gnus/mm-bodies.el @@ -56,6 +56,8 @@ ;; known to break servers. ;; Note: UTF-16 variants are invalid for text parts [RFC 2781], ;; so this can't happen :-/. + ;; PPS: Yes, it can happen if the user specifies UTF-16 in the MML + ;; markup. - jh. (utf-16 . base64) (utf-16be . base64) (utf-16le . base64)) @@ -251,7 +253,10 @@ decoding. If it is nil, default to `mail-parse-charset'." (mm-decode-content-transfer-encoding encoding type)) (when (and (featurep 'mule) ;; Fixme: Wrong test for unibyte session. (not (eq charset 'gnus-decoded))) - (let ((coding-system (mm-charset-to-coding-system charset))) + (let ((coding-system (mm-charset-to-coding-system + ;; Allow overwrite using + ;; `mm-charset-override-alist'. + charset nil t))) (if (and (not coding-system) (listp mail-parse-ignored-charsets) (memq 'gnus-unknown mail-parse-ignored-charsets)) @@ -282,7 +287,11 @@ decoding. If it is nil, default to `mail-parse-charset'." (setq charset mail-parse-charset)) (or (when (featurep 'mule) - (let ((coding-system (mm-charset-to-coding-system charset))) + (let ((coding-system (mm-charset-to-coding-system + charset + ;; Allow overwrite using + ;; `mm-charset-override-alist'. + nil t))) (if (and (not coding-system) (listp mail-parse-ignored-charsets) (memq 'gnus-unknown mail-parse-ignored-charsets)) diff --git a/lisp/gnus/mm-util.el b/lisp/gnus/mm-util.el index a8c1f3a87a1..e16750cfcf6 100644 --- a/lisp/gnus/mm-util.el +++ b/lisp/gnus/mm-util.el @@ -177,6 +177,29 @@ system object in XEmacs." ;; no-MULE XEmacs: (car (memq cs (mm-get-coding-system-list)))))) +(defun mm-codepage-setup (number &optional alias) + "Create a coding system cpNUMBER. +The coding system is created using `codepage-setup'. If ALIAS is +non-nil, an alias is created and added to +`mm-charset-synonym-alist'. If ALIAS is a string, it's used as +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")))) + (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)) + (when (and alias + ;; Don't add alias if setup of cp failed. + (mm-coding-system-p cp)) + (add-to-list 'mm-charset-synonym-alist (cons alias cp))))) + (defvar mm-charset-synonym-alist `( ;; Not in XEmacs, but it's not a proper MIME charset anyhow. @@ -200,8 +223,61 @@ system object in XEmacs." ,@(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.") + "A mapping from unknown or invalid charset names to the real charset names.") + +(defcustom mm-charset-override-alist + `((iso-8859-1 . windows-1252)) + "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 (undecided . windows-1252))) + (repeat :inline t + :tag "Other options" + (cons (symbol :tag "From charset") + (symbol :tag "To charset")))) + :version "23.0" ;; No Gnus + :group 'mime) + +(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). + (windows-1250 . (mm-codepage-setup 1250 t)) + (windows-1251 . (mm-codepage-setup 1251 t)) + (windows-1253 . (mm-codepage-setup 1253 t)) + (windows-1257 . (mm-codepage-setup 1257 t)))) + "An alist of (CHARSET . FORM) pairs. +If an article is encoded in an unknown CHARSET, FORM is +evaluated. This allows to load additional libraries providing +charsets on demand. If supported by your Emacs version, you +could use `autoload-coding-system' here." + :version "23.0" ;; No Gnus + :type '(list (set :inline t + (const (windows-1250 . (mm-codepage-setup 1250 t))) + (const (windows-1251 . (mm-codepage-setup 1251 t))) + (const (windows-1253 . (mm-codepage-setup 1253 t))) + (const (windows-1257 . (mm-codepage-setup 1257 t))) + (const (cp850 . (mm-codepage-setup 850 nil)))) + (repeat :inline t + :tag "Other options" + (cons (symbol :tag "charset") + (symbol :tag "form")))) + :group 'mime) (defvar mm-binary-coding-system (cond @@ -426,11 +502,17 @@ mail with multiple parts is preferred to sending a Unicode one.") (pop alist)) out))) -(defun mm-charset-to-coding-system (charset &optional lbt) +(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." +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 @@ -442,6 +524,11 @@ used as the line break code type of the coding system." ((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) @@ -454,9 +541,27 @@ used as the line break code type of the coding system." ;;; (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) cs))) + (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). @@ -468,6 +573,11 @@ used as the line break code type of the coding system." (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)))) (defsubst mm-replace-chars-in-string (string from to) @@ -1070,7 +1180,8 @@ If SUFFIX is non-nil, add that at the end of the file name." (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))) |