;; Maintainer: FSF
;; Keywords: internal
-;; Copyright (c) 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
;; Based partially on earlier release by Lucid.
;; This file is part of GNU Emacs.
;; 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:
and the argument DATA-TYPE (default `STRING') says
how to convert the data.
-TYPE may be `SECONDARY' or `CLIPBOARD', in addition to `PRIMARY'.
+TYPE may be any symbol \(but nil stands for `PRIMARY'). However,
+only a few symbols are commonly used. They conventionally have
+all upper-case names. The most often used ones, in addition to
+`PRIMARY', are `SECONDARY' and `CLIPBOARD'.
+
DATA-TYPE is usually `STRING', but can also be one of the symbols
in `selection-converter-alist', which see."
(let ((data (x-get-selection-internal (or type 'PRIMARY)
(defun x-set-selection (type data)
"Make an X Windows selection of type TYPE and value DATA.
-The argument TYPE (default `PRIMARY') says which selection,
-and DATA specifies the contents. DATA may be a string,
-a symbol, an integer (or a cons of two integers or list of two integers).
+The argument TYPE (nil means `PRIMARY') says which selection, and
+DATA specifies the contents. TYPE must be a symbol. \(It can also
+be a string, which stands for the symbol with that name, but this
+is considered obsolete.) DATA may be a string, a symbol, an
+integer (or a cons of two integers or list of two integers).
The selection may also be a cons of two markers pointing to the same buffer,
or an overlay. In these cases, the selection is considered to be the text
The data may also be a vector of valid non-vector selection values.
-Interactively, the text of the region is used as the selection value
-if the prefix arg is set."
+The return value is DATA.
+
+Interactively, this command sets the primary selection. Without
+prefix argument, it reads the selection in the minibuffer. With
+prefix argument, it uses the text of the region as the selection value ."
(interactive (if (not current-prefix-arg)
(list 'PRIMARY (read-string "Set text for pasting: "))
(list 'PRIMARY (buffer-substring (region-beginning) (region-end)))))
;;; Every selection type that Emacs handles is implemented this way, except
;;; for TIMESTAMP, which is a special case.
+(eval-when-compile (require 'ccl))
+
+(define-ccl-program ccl-check-utf-8
+ '(0
+ ((r0 = 1)
+ (loop
+ (read-if (r1 < #x80) (repeat)
+ ((r0 = 0)
+ (if (r1 < #xC2) (end))
+ (read r2)
+ (if ((r2 & #xC0) != #x80) (end))
+ (if (r1 < #xE0) ((r0 = 1) (repeat)))
+ (read r2)
+ (if ((r2 & #xC0) != #x80) (end))
+ (if (r1 < #xF0) ((r0 = 1) (repeat)))
+ (read r2)
+ (if ((r2 & #xC0) != #x80) (end))
+ (if (r1 < #xF8) ((r0 = 1) (repeat)))
+ (read r2)
+ (if ((r2 & #xC0) != #x80) (end))
+ (if (r1 == #xF8) ((r0 = 1) (repeat)))
+ (end))))))
+ "Check if the input unibyte string is a valid UTF-8 sequence or not.
+If it is valid, set the register `r0' to 1, else set it to 0.")
+
+(defun string-utf-8-p (string)
+ "Return non-nil iff STRING is a unibyte string of valid UTF-8 sequence."
+ (if (or (not (stringp string))
+ (multibyte-string-p string))
+ (error "Not a unibyte string: %s" string))
+ (let ((status (make-vector 9 0)))
+ (ccl-execute-on-string ccl-check-utf-8 status string)
+ (= (aref status 0) 1)))
+
+
(defun xselect-convert-to-string (selection type value)
(let (str coding)
;; Get the actual string from VALUE.
(setq str (encode-coding-string str coding))))
((eq type 'UTF8_STRING)
- (setq str (encode-coding-string str 'utf-8)))
-
+ (if (multibyte-string-p str)
+ (setq str (encode-coding-string str 'utf-8)))
+ (if (not (string-utf-8-p str))
+ (setq str nil))) ;; Decline request as we don't have UTF-8 data.
(t
(error "Unknow selection type: %S" type))
)))