-/* Win32 Selection processing for emacs
+/* Selection processing for Emacs on the Microsoft W32 API.
Copyright (C) 1993, 1994 Free Software Foundation.
- 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+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. */
/* Written by Kevin Gallo */
#include <config.h>
#include "lisp.h"
-#include "w32term.h" /* for all of the win32 includes */
+#include "w32term.h" /* for all of the w32 includes */
#include "dispextern.h" /* frame.h seems to want this */
#include "frame.h" /* Need this to get the X window of selected_frame */
#include "blockinput.h"
+Lisp_Object QCLIPBOARD;
+
#if 0
-DEFUN ("win32-open-clipboard", Fwin32_open_clipboard, Swin32_open_clipboard, 0, 1, 0,
+DEFUN ("w32-open-clipboard", Fw32_open_clipboard, Sw32_open_clipboard, 0, 1, 0,
"This opens the clipboard with the given frame pointer.")
(frame)
Lisp_Object frame;
BLOCK_INPUT;
- ok = OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL);
+ ok = OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL);
UNBLOCK_INPUT;
return (ok ? frame : Qnil);
}
-DEFUN ("win32-empty-clipboard", Fwin32_empty_clipboard, Swin32_empty_clipboard, 0, 0, 0,
+DEFUN ("w32-empty-clipboard", Fw32_empty_clipboard, Sw32_empty_clipboard, 0, 0, 0,
"This empties the clipboard and assigns ownership to the window which opened the clipboard.")
()
{
return (ok ? Qt : Qnil);
}
-DEFUN ("win32-close-clipboard", Fwin32_close_clipboard, Swin32_close_clipboard, 0, 0, 0,
+DEFUN ("w32-close-clipboard", Fw32_close_clipboard, Sw32_close_clipboard, 0, 0, 0,
"This closes the clipboard.")
()
{
#endif
-DEFUN ("win32-set-clipboard-data", Fwin32_set_clipboard_data, Swin32_set_clipboard_data, 1, 2, 0,
+DEFUN ("w32-set-clipboard-data", Fw32_set_clipboard_data, Sw32_set_clipboard_data, 1, 2, 0,
"This sets the clipboard data to the given text.")
(string, frame)
Lisp_Object string, frame;
{
BOOL ok = TRUE;
HANDLE htext;
+ int nbytes;
+ int truelen;
+ unsigned char *src;
+ unsigned char *dst;
CHECK_STRING (string, 0);
CHECK_LIVE_FRAME (frame, 0);
BLOCK_INPUT;
-
- /* Allocate twice the amount so we can convert lf to cr-lf */
-
- if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, (2 * XSTRING (string)->size) + 1)) == NULL)
+
+ nbytes = XSTRING (string)->size + 1;
+ src = XSTRING (string)->data;
+
+ /* need to know final size after '\r' chars are inserted (the
+ standard CF_TEXT clipboard format uses CRLF line endings,
+ while Emacs uses just LF internally) */
+
+ truelen = nbytes;
+ dst = src;
+ /* avoid using strchr because it recomputes the length everytime */
+ while ((dst = memchr (dst, '\n', nbytes - (dst - src))) != NULL)
+ {
+ truelen++;
+ dst++;
+ }
+
+ if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, truelen)) == NULL)
+ goto error;
+
+ if ((dst = (unsigned char *) GlobalLock (htext)) == NULL)
goto error;
-
- {
- unsigned char *lptext;
- if ((lptext = (unsigned char *)GlobalLock (htext)) == NULL)
- goto error;
-
+ /* convert to CRLF line endings expected by clipboard */
+ while (1)
{
- int i = XSTRING (string)->size;
- int newsize = XSTRING (string)->size;
- register char *p1 = XSTRING (string)->data;
- register char *p2 = lptext;
-
- while (i--)
+ unsigned char *next;
+ /* copy next line or remaining bytes including '\0' */
+ next = _memccpy (dst, src, '\n', nbytes);
+ if (next)
{
- if (*p1 == '\n')
- {
- newsize++;
- *p2++ = '\r';
- }
-
- *p2++ = *p1++;
- }
-
- *p2 = 0;
+ /* copied one line ending with '\n' */
+ int copied = next - dst;
+ nbytes -= copied;
+ src += copied;
+ /* insert '\r' before '\n' */
+ next[-1] = '\r';
+ next[0] = '\n';
+ dst = next + 1;
+ }
+ else
+ /* copied remaining partial line -> now finished */
+ break;
}
- GlobalUnlock (htext);
- }
+ GlobalUnlock (htext);
- if (!OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL))
+ if (!OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL))
goto error;
ok = EmptyClipboard () && SetClipboardData (CF_TEXT, htext);
return (ok ? string : Qnil);
}
-DEFUN ("win32-get-clipboard-data", Fwin32_get_clipboard_data, Swin32_get_clipboard_data, 0, 1, 0,
+DEFUN ("w32-get-clipboard-data", Fw32_get_clipboard_data, Sw32_get_clipboard_data, 0, 1, 0,
"This gets the clipboard data in text format.")
(frame)
Lisp_Object frame;
BLOCK_INPUT;
- if (!OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL))
+ if (!OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL))
goto done;
if ((htext = GetClipboardData (CF_TEXT)) == NULL)
goto closeclip;
-
{
- unsigned char *lptext;
+ unsigned char *src;
+ unsigned char *dst;
int nbytes;
+ int truelen;
- if ((lptext = (unsigned char *)GlobalLock (htext)) == NULL)
+ if ((src = (unsigned char *) GlobalLock (htext)) == NULL)
goto closeclip;
- nbytes = strlen (lptext);
-
- {
- char *buf = (char *) xmalloc (nbytes);
- register char *p1 = lptext;
- register char *p2 = buf;
- int i = nbytes;
-
- if (buf == NULL) goto closeclip;
-
- while (i--)
- {
- if (p1[0] == '\r' && i && p1[1] == '\n')
- {
- p1++;
- i--;
- nbytes--;
- }
-
- *p2++ = *p1++;
- }
-
- ret = make_string (buf, nbytes);
-
- xfree (buf);
- }
-
+ nbytes = strlen (src);
+
+ /* need to know final size after '\r' chars are removed because
+ we can't change the string size manually, and doing an extra
+ copy is silly */
+
+ truelen = nbytes;
+ dst = src;
+ /* avoid using strchr because it recomputes the length everytime */
+ while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL)
+ {
+ truelen--;
+ dst++;
+ }
+
+ ret = make_uninit_string (truelen);
+
+ /* convert CRLF line endings (the standard CF_TEXT clipboard
+ format) to LF endings as used internally by Emacs */
+
+ dst = XSTRING (ret)->data;
+ while (1)
+ {
+ unsigned char *next;
+ /* copy next line or remaining bytes excluding '\0' */
+ next = _memccpy (dst, src, '\r', nbytes);
+ if (next)
+ {
+ /* copied one line ending with '\r' */
+ int copied = next - dst;
+ nbytes -= copied;
+ dst += copied - 1; /* overwrite '\r' */
+ src += copied;
+ }
+ else
+ /* copied remaining partial line -> now finished */
+ break;
+ }
+
GlobalUnlock (htext);
}
return (ret);
}
+/* Support checking for a clipboard selection. */
+
+DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
+ 0, 1, 0,
+ "Whether there is an owner for the given X Selection.\n\
+The arg should be the name of the selection in question, typically one of\n\
+the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\
+\(Those are literal upper-case symbol names, since that's what X expects.)\n\
+For convenience, the symbol nil is the same as `PRIMARY',\n\
+and t is the same as `SECONDARY'.")
+ (selection)
+ Lisp_Object selection;
+{
+ CHECK_SYMBOL (selection, 0);
+
+ /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check
+ if the clipboard currently has valid text format contents. */
+
+ if (EQ (selection, QCLIPBOARD))
+ {
+ Lisp_Object val = Qnil;
+
+ if (OpenClipboard (NULL))
+ {
+ int format = 0;
+ while (format = EnumClipboardFormats (format))
+ if (format == CF_TEXT)
+ {
+ val = Qt;
+ break;
+ }
+ CloseClipboard ();
+ }
+ return val;
+ }
+ return Qnil;
+}
+
void
-syms_of_win32select ()
+syms_of_w32select ()
{
#if 0
- defsubr (&Swin32_open_clipboard);
- defsubr (&Swin32_empty_clipboard);
- defsubr (&Swin32_close_clipboard);
+ defsubr (&Sw32_open_clipboard);
+ defsubr (&Sw32_empty_clipboard);
+ defsubr (&Sw32_close_clipboard);
#endif
- defsubr (&Swin32_set_clipboard_data);
- defsubr (&Swin32_get_clipboard_data);
+ defsubr (&Sw32_set_clipboard_data);
+ defsubr (&Sw32_get_clipboard_data);
+ defsubr (&Sx_selection_exists_p);
+
+ QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD);
}