;; Maintainer: FSF
;; Keywords: internal
-;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004,
-;; 2005, 2006 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+;; 2008, 2009 Free Software Foundation, Inc.
;; Based partially on earlier release by Lucid.
;; 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 2, 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
;; 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:
+(defcustom selection-coding-system nil
+ "Coding system for communicating with other X clients.
+
+When sending text via selection and clipboard, if the target
+data-type matches with the type of this coding system, it is used
+for encoding the text. Otherwise (including the case that this
+variable is nil), a proper coding system is used as below:
+
+data-type coding system
+--------- -------------
+UTF8_STRING utf-8
+COMPOUND_TEXT compound-text-with-extensions
+STRING iso-latin-1
+C_STRING no-conversion
+
+When receiving text, if this coding system is non-nil, it is used
+for decoding regardless of the data-type. If this is nil, a
+proper coding system is used according to the data-type as above.
+
+See also the documentation of the variable `x-select-request-type' how
+to control which data-type to request for receiving text.
+
+The default value is nil."
+ :type 'coding-system
+ :group 'mule
+ ;; Default was compound-text-with-extensions in 22.x (pre-unicode).
+ :version "23.1"
+ :set (lambda (symbol value)
+ (set-selection-coding-system value)
+ (set symbol value)))
+
+(defvar next-selection-coding-system nil
+ "Coding system for the next communication with other X clients.
+Usually, `selection-coding-system' is used for communicating with
+other X clients. But, if this variable is set, it is used for
+the next communication only. After the communication, this
+variable is set to nil.")
+
+(declare-function x-get-selection-internal "xselect.c"
+ (selection-symbol target-type &optional time-stamp))
+
;; This is for temporary compatibility with pre-release Emacs 19.
(defalias 'x-selection 'x-get-selection)
(defun x-get-selection (&optional type data-type)
coding)
(when (and (stringp data)
(setq data-type (get-text-property 0 'foreign-selection data)))
- (setq coding (if (eq data-type 'UTF8_STRING)
- 'utf-8
- (or next-selection-coding-system
- selection-coding-system))
- data (decode-coding-string data coding))
+ (setq coding (or next-selection-coding-system
+ selection-coding-system
+ (cond ((eq data-type 'UTF8_STRING)
+ 'utf-8)
+ ((eq data-type 'COMPOUND_TEXT)
+ 'compound-text-with-extensions)
+ ((eq data-type 'C_STRING)
+ nil)
+ ((eq data-type 'STRING)
+ 'iso-8859-1)
+ (t
+ (error "Unknow selection data type: %S" type))))
+ data (if coding (decode-coding-string data coding)
+ (string-to-multibyte data)))
+ (setq next-selection-coding-system nil)
(put-text-property 0 (length data) 'foreign-selection data-type data))
data))
"Return text pasted to the clipboard."
(x-get-selection-internal 'CLIPBOARD 'STRING))
+(declare-function x-own-selection-internal "xselect.c"
+ (selection-name selection-value))
+(declare-function x-disown-selection-internal "xselect.c"
+ (selection &optional time))
+
(defun x-set-selection (type data)
"Make an X Windows selection of type TYPE and value DATA.
The argument TYPE (nil means `PRIMARY') says which selection, and
\f
;;; Cut Buffer support
+(declare-function x-get-cut-buffer-internal "xselect.c")
+
(defun x-get-cut-buffer (&optional which-one)
- "Returns the value of one of the 8 X server cut-buffers.
+ "Return the value of one of the 8 X server cut-buffers.
Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
Cut buffers are considered obsolete; you should use selections instead."
(x-get-cut-buffer-internal
which-one)
'CUT_BUFFER0)))
+(declare-function x-rotate-cut-buffers-internal "xselect.c")
+(declare-function x-store-cut-buffer-internal "xselect.c")
+
(defun x-set-cut-buffer (string &optional push)
"Store STRING into the X server's primary cut buffer.
If PUSH is non-nil, also rotate the cut buffers:
this means the previous value of the primary cut buffer moves to the second
cut buffer, and the second to the third, and so on (there are 8 buffers.)
Cut buffers are considered obsolete; you should use selections instead."
- (or (stringp string) (signal 'wrong-type-argument (list 'string string)))
+ (or (stringp string) (signal 'wrong-type-argument (list 'stringp string)))
(if push
(x-rotate-cut-buffers-internal 1))
(x-store-cut-buffer-internal 'CUT_BUFFER0 string))
\f
-;;; Functions to convert the selection into various other selection types.
-;;; 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)))
-
+;; Functions to convert the selection into various other selection types.
+;; Every selection type that Emacs handles is implemented this way, except
+;; for TIMESTAMP, which is a special case.
(defun xselect-convert-to-string (selection type value)
(let (str coding)
str
(setq coding (or next-selection-coding-system selection-coding-system))
(if coding
- (setq coding (coding-system-base coding))
- (setq coding 'raw-text))
+ (setq coding (coding-system-base coding)))
(let ((inhibit-read-only t))
;; Suppress producing escape sequences for compositions.
(remove-text-properties 0 (length str) '(composition nil) str)
+ (if (eq type 'TEXT)
+ ;; TEXT is a polymorphic target. We must select the
+ ;; actual type from `UTF8_STRING', `COMPOUND_TEXT',
+ ;; `STRING', and `C_STRING'.
+ (if (not (multibyte-string-p str))
+ (setq type 'C_STRING)
+ (let (non-latin-1 non-unicode eight-bit)
+ (mapc #'(lambda (x)
+ (if (>= x #x100)
+ (if (< x #x110000)
+ (setq non-latin-1 t)
+ (if (< x #x3FFF80)
+ (setq non-unicode t)
+ (setq eight-bit t)))))
+ str)
+ (setq type (if non-unicode 'COMPOUND_TEXT
+ (if non-latin-1 'UTF8_STRING
+ (if eight-bit 'C_STRING 'STRING)))))))
(cond
- ((eq type 'TEXT)
- (if (not (multibyte-string-p str))
- ;; Don't have to encode unibyte string.
- (setq type 'STRING)
- ;; If STR contains only ASCII, Latin-1, and raw bytes,
- ;; encode STR by iso-latin-1, and return it as type
- ;; `STRING'. Otherwise, encode STR by CODING. In that
- ;; case, the returing type depends on CODING.
- (let ((charsets (find-charset-string str)))
- (setq charsets
- (delq 'ascii
- (delq 'latin-iso8859-1
- (delq 'eight-bit-control
- (delq 'eight-bit-graphic charsets)))))
- (if charsets
- (setq str (encode-coding-string str coding)
- type (if (memq coding '(compound-text
- compound-text-with-extensions))
- 'COMPOUND_TEXT
- 'STRING))
- (setq type 'STRING
- str (encode-coding-string str 'iso-latin-1))))))
+ ((eq type 'UTF8_STRING)
+ (if (or (not coding)
+ (not (eq (coding-system-type coding) 'utf-8)))
+ (setq coding 'utf-8))
+ (setq str (encode-coding-string str coding)))
+
+ ((eq type 'STRING)
+ (if (or (not coding)
+ (not (eq (coding-system-type coding) 'charset)))
+ (setq coding 'iso-8859-1))
+ (setq str (encode-coding-string str coding)))
((eq type 'COMPOUND_TEXT)
+ (if (or (not coding)
+ (not (eq (coding-system-type coding) 'iso-2022)))
+ (setq coding 'compound-text-with-extensions))
(setq str (encode-coding-string str coding)))
- ((eq type 'STRING)
- (if (memq coding '(compound-text
- compound-text-with-extensions))
- (setq str (string-make-unibyte str))
- (setq str (encode-coding-string str coding))))
+ ((eq type 'C_STRING)
+ (setq str (string-make-unibyte str)))
- ((eq type 'UTF8_STRING)
- (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))
)))
(provide 'select)
-;;; arch-tag: bb634f97-8a3b-4b0a-b940-f6e09982328c
+;; arch-tag: bb634f97-8a3b-4b0a-b940-f6e09982328c
;;; select.el ends here