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[Emacs-diffs] Changes to emacs/lisp/select.el [gnus-5_10-branch]
From: |
Miles Bader |
Subject: |
[Emacs-diffs] Changes to emacs/lisp/select.el [gnus-5_10-branch] |
Date: |
Sat, 04 Sep 2004 08:27:05 -0400 |
Index: emacs/lisp/select.el
diff -c /dev/null emacs/lisp/select.el:1.23.2.1
*** /dev/null Sat Sep 4 12:02:19 2004
--- emacs/lisp/select.el Sat Sep 4 12:01:08 2004
***************
*** 0 ****
--- 1,403 ----
+ ;;; select.el --- lisp portion of standard selection support
+
+ ;; Maintainer: FSF
+ ;; Keywords: internal
+
+ ;; Copyright (c) 1993, 1994, 2004 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
+ ;; 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.
+
+ ;; 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
+ ;; 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., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+
+ ;;; Commentary:
+
+ ;;; Code:
+
+ ;; This is for temporary compatibility with pre-release Emacs 19.
+ (defalias 'x-selection 'x-get-selection)
+ (defun x-get-selection (&optional type data-type)
+ "Return the value of an X Windows selection.
+ The argument TYPE (default `PRIMARY') says which selection,
+ and the argument DATA-TYPE (default `STRING') says
+ how to convert the data.
+
+ 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)
+ (or data-type 'STRING)))
+ 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))
+ (put-text-property 0 (length data) 'foreign-selection data-type data))
+ data))
+
+ (defun x-get-clipboard ()
+ "Return text pasted to the clipboard."
+ (x-get-selection-internal 'CLIPBOARD 'STRING))
+
+ (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
+ 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
+ between the markers *at whatever time the selection is examined*.
+ Thus, editing done in the buffer after you specify the selection
+ can alter the effective value of the selection.
+
+ The data may also be a vector of valid non-vector selection values.
+
+ 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)))))
+ ;; This is for temporary compatibility with pre-release Emacs 19.
+ (if (stringp type)
+ (setq type (intern type)))
+ (or (x-valid-simple-selection-p data)
+ (and (vectorp data)
+ (let ((valid t)
+ (i (1- (length data))))
+ (while (>= i 0)
+ (or (x-valid-simple-selection-p (aref data i))
+ (setq valid nil))
+ (setq i (1- i)))
+ valid))
+ (signal 'error (list "invalid selection" data)))
+ (or type (setq type 'PRIMARY))
+ (if data
+ (x-own-selection-internal type data)
+ (x-disown-selection-internal type))
+ data)
+
+ (defun x-valid-simple-selection-p (data)
+ (or (stringp data)
+ (symbolp data)
+ (integerp data)
+ (and (consp data)
+ (integerp (car data))
+ (or (integerp (cdr data))
+ (and (consp (cdr data))
+ (integerp (car (cdr data))))))
+ (overlayp data)
+ (and (consp data)
+ (markerp (car data))
+ (markerp (cdr data))
+ (marker-buffer (car data))
+ (marker-buffer (cdr data))
+ (eq (marker-buffer (car data))
+ (marker-buffer (cdr data)))
+ (buffer-name (marker-buffer (car data)))
+ (buffer-name (marker-buffer (cdr data))))))
+
+ ;;; Cut Buffer support
+
+ (defun x-get-cut-buffer (&optional which-one)
+ "Returns 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
+ (if which-one
+ (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
+ CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
+ which-one)
+ 'CUT_BUFFER0)))
+
+ (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)))
+ (if push
+ (x-rotate-cut-buffers-internal 1))
+ (x-store-cut-buffer-internal 'CUT_BUFFER0 string))
+
+
+ ;;; 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)
+ ;; Get the actual string from VALUE.
+ (cond ((stringp value)
+ (setq str value))
+
+ ((overlayp value)
+ (save-excursion
+ (or (buffer-name (overlay-buffer value))
+ (error "selection is in a killed buffer"))
+ (set-buffer (overlay-buffer value))
+ (setq str (buffer-substring (overlay-start value)
+ (overlay-end value)))))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (or (eq (marker-buffer (car value)) (marker-buffer (cdr value)))
+ (signal 'error
+ (list "markers must be in the same buffer"
+ (car value) (cdr value))))
+ (save-excursion
+ (set-buffer (or (marker-buffer (car value))
+ (error "selection is in a killed buffer")))
+ (setq str (buffer-substring (car value) (cdr value))))))
+
+ (when str
+ ;; If TYPE is nil, this is a local request, thus return STR as
+ ;; is. Otherwise, encode STR.
+ (if (not type)
+ str
+ (setq coding (or next-selection-coding-system selection-coding-system))
+ (if coding
+ (setq coding (coding-system-base coding))
+ (setq coding 'raw-text))
+ (let ((inhibit-read-only t))
+ ;; Suppress producing escape sequences for compositions.
+ (remove-text-properties 0 (length str) '(composition nil) str)
+ (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 'COMPOUND_TEXT)
+ (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 'UTF8_STRING)
+ (setq str (encode-coding-string str 'utf-8)))
+
+ (t
+ (error "Unknow selection type: %S" type))
+ )))
+
+ (setq next-selection-coding-system nil)
+ (cons type str))))
+
+
+ (defun xselect-convert-to-length (selection type value)
+ (let ((value
+ (cond ((stringp value)
+ (length value))
+ ((overlayp value)
+ (abs (- (overlay-end value) (overlay-start value))))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (or (eq (marker-buffer (car value))
+ (marker-buffer (cdr value)))
+ (signal 'error
+ (list "markers must be in the same buffer"
+ (car value) (cdr value))))
+ (abs (- (car value) (cdr value)))))))
+ (if value ; force it to be in 32-bit format.
+ (cons (ash value -16) (logand value 65535))
+ nil)))
+
+ (defun xselect-convert-to-targets (selection type value)
+ ;; return a vector of atoms, but remove duplicates first.
+ (let* ((all (cons 'TIMESTAMP (mapcar 'car selection-converter-alist)))
+ (rest all))
+ (while rest
+ (cond ((memq (car rest) (cdr rest))
+ (setcdr rest (delq (car rest) (cdr rest))))
+ ((eq (car (cdr rest)) '_EMACS_INTERNAL) ; shh, it's a secret
+ (setcdr rest (cdr (cdr rest))))
+ (t
+ (setq rest (cdr rest)))))
+ (apply 'vector all)))
+
+ (defun xselect-convert-to-delete (selection type value)
+ (x-disown-selection-internal selection)
+ ;; A return value of nil means that we do not know how to do this
conversion,
+ ;; and replies with an "error". A return value of NULL means that we have
+ ;; done the conversion (and any side-effects) but have no value to return.
+ 'NULL)
+
+ (defun xselect-convert-to-filename (selection type value)
+ (cond ((overlayp value)
+ (buffer-file-name (or (overlay-buffer value)
+ (error "selection is in a killed buffer"))))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (buffer-file-name (or (marker-buffer (car value))
+ (error "selection is in a killed buffer"))))
+ (t nil)))
+
+ (defun xselect-convert-to-charpos (selection type value)
+ (let (a b tmp)
+ (cond ((cond ((overlayp value)
+ (setq a (overlay-start value)
+ b (overlay-end value)))
+ ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (car value)
+ b (cdr value))))
+ (setq a (1- a) b (1- b)) ; zero-based
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+ (defun xselect-convert-to-lineno (selection type value)
+ (let (a b buf tmp)
+ (cond ((cond ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (marker-position (car value))
+ b (marker-position (cdr value))
+ buf (marker-buffer (car value))))
+ ((overlayp value)
+ (setq buf (overlay-buffer value)
+ a (overlay-start value)
+ b (overlay-end value)))
+ )
+ (save-excursion
+ (set-buffer buf)
+ (setq a (count-lines 1 a)
+ b (count-lines 1 b)))
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+ (defun xselect-convert-to-colno (selection type value)
+ (let (a b buf tmp)
+ (cond ((cond ((and (consp value)
+ (markerp (car value))
+ (markerp (cdr value)))
+ (setq a (car value)
+ b (cdr value)
+ buf (marker-buffer a)))
+ ((overlayp value)
+ (setq buf (overlay-buffer value)
+ a (overlay-start value)
+ b (overlay-end value)))
+ )
+ (save-excursion
+ (set-buffer buf)
+ (goto-char a)
+ (setq a (current-column))
+ (goto-char b)
+ (setq b (current-column)))
+ (if (< b a) (setq tmp a a b b tmp))
+ (cons 'SPAN
+ (vector (cons (ash a -16) (logand a 65535))
+ (cons (ash b -16) (logand b 65535))))))))
+
+ (defun xselect-convert-to-os (selection type size)
+ (symbol-name system-type))
+
+ (defun xselect-convert-to-host (selection type size)
+ (system-name))
+
+ (defun xselect-convert-to-user (selection type size)
+ (user-full-name))
+
+ (defun xselect-convert-to-class (selection type size)
+ "Convert selection to class.
+ This function returns the string \"Emacs\"."
+ "Emacs")
+
+ ;; We do not try to determine the name Emacs was invoked with,
+ ;; because it is not clean for a program's behavior to depend on that.
+ (defun xselect-convert-to-name (selection type size)
+ "Convert selection to name.
+ This function returns the string \"emacs\"."
+ "emacs")
+
+ (defun xselect-convert-to-integer (selection type value)
+ (and (integerp value)
+ (cons (ash value -16) (logand value 65535))))
+
+ (defun xselect-convert-to-atom (selection type value)
+ (and (symbolp value) value))
+
+ (defun xselect-convert-to-identity (selection type value) ; used internally
+ (vector value))
+
+ (setq selection-converter-alist
+ '((TEXT . xselect-convert-to-string)
+ (COMPOUND_TEXT . xselect-convert-to-string)
+ (STRING . xselect-convert-to-string)
+ (UTF8_STRING . xselect-convert-to-string)
+ (TARGETS . xselect-convert-to-targets)
+ (LENGTH . xselect-convert-to-length)
+ (DELETE . xselect-convert-to-delete)
+ (FILE_NAME . xselect-convert-to-filename)
+ (CHARACTER_POSITION . xselect-convert-to-charpos)
+ (LINE_NUMBER . xselect-convert-to-lineno)
+ (COLUMN_NUMBER . xselect-convert-to-colno)
+ (OWNER_OS . xselect-convert-to-os)
+ (HOST_NAME . xselect-convert-to-host)
+ (USER . xselect-convert-to-user)
+ (CLASS . xselect-convert-to-class)
+ (NAME . xselect-convert-to-name)
+ (ATOM . xselect-convert-to-atom)
+ (INTEGER . xselect-convert-to-integer)
+ (_EMACS_INTERNAL . xselect-convert-to-identity)
+ ))
+
+ (provide 'select)
+
+ ;;; arch-tag: bb634f97-8a3b-4b0a-b940-f6e09982328c
+ ;;; select.el ends here
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