XEmacs 21.2-b1

[chise/xemacs-chise.git.1] / src / select-msw.c

diff --git a/src/select-msw.c b/src/select-msw.c
new file mode 100644 (file)
index 0000000..3096d54
--- /dev/null
+++ b/src/select-msw.c
@@ -0,0 +1,180 @@
+/* mswindows selection processing for XEmacs
+   Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs 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.
+
+XEmacs 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 XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not synched with FSF. */
+
+/* Authorship:
+
+   Written by Kevin Gallo for FSF Emacs.
+   Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0.
+ */
+
+
+#include <config.h>
+#include "lisp.h"
+
+#include "console-msw.h"
+
+DEFUN ("mswindows-set-clipboard", Fmswindows_set_clipboard, 1, 1, 0, /*
+Copy STRING to the mswindows clipboard.
+*/
+       (string))
+{
+  int rawsize, size, i;
+  unsigned char *src, *dst, *next;
+  HGLOBAL h = NULL;
+
+  CHECK_STRING (string);
+
+  /* Calculate size with LFs converted to CRLFs because
+   * CF_TEXT format uses CRLF delimited ASCIIZ */
+  src = XSTRING_DATA (string);
+  size = rawsize = XSTRING_LENGTH (string) + 1;
+  for (i=0; i<rawsize; i++)
+    if (src[i] == '\n')
+      size++;
+
+  if (!OpenClipboard (NULL))
+    return Qnil;
+
+  if (!EmptyClipboard () ||
+      (h = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, size)) == NULL ||
+      (dst = (unsigned char *) GlobalLock (h)) == NULL)
+    {
+      if (h != NULL) GlobalFree (h);
+      CloseClipboard ();
+      return Qnil;
+    }
+    
+  /* Convert LFs to CRLFs */
+  do
+    {
+      /* copy next line or remaining bytes including '\0' */
+      next = memccpy (dst, src, '\n', rawsize);
+      if (next)
+       {
+         /* copied one line ending with '\n' */
+         int copied = next - dst;
+         rawsize -= copied;
+         src += copied;
+         /* insert '\r' before '\n' */
+         next[-1] = '\r';
+         next[0] = '\n';
+         dst = next+1;
+       }           
+    }
+  while (next);
+    
+  GlobalUnlock (h);
+  
+  i = (SetClipboardData (CF_TEXT, h) != NULL);
+  
+  CloseClipboard ();
+  GlobalFree (h);
+  
+  return i ? Qt : Qnil;
+}
+
+DEFUN ("mswindows-get-clipboard", Fmswindows_get_clipboard, 0, 0, 0, /*
+Return the contents of the mswindows clipboard.
+*/
+       ())
+{
+  HANDLE h;
+  unsigned char *src, *dst, *next;
+  Lisp_Object ret = Qnil;
+
+  if (!OpenClipboard (NULL))
+    return Qnil;
+
+  if ((h = GetClipboardData (CF_TEXT)) != NULL &&
+      (src = (unsigned char *) GlobalLock (h)) != NULL)
+    {
+      int i;
+      int size, rawsize;
+      size = rawsize = strlen (src);
+
+      for (i=0; i<rawsize; i++)
+       if (src[i] == '\r' && src[i+1] == '\n')
+         size--;
+
+      /* Convert CRLFs to LFs */
+      ret = make_uninit_string (size);
+      dst = XSTRING_DATA (ret);
+      do
+       {
+         /* copy next line or remaining bytes excluding '\0' */
+         next = memccpy (dst, src, '\r', rawsize);
+         if (next)
+           {
+             /* copied one line ending with '\r' */
+             int copied = next - dst;
+             rawsize -= copied;
+             src += copied;
+             if (*src == '\n')
+               dst += copied - 1;              /* overwrite '\r' */
+             else
+               dst += copied;
+           }       
+       }
+      while (next);
+
+      GlobalUnlock (h);
+    }
+
+  CloseClipboard ();
+
+  return ret;
+}
+
+DEFUN ("mswindows-selection-exists-p", Fmswindows_selection_exists_p, 0, 0, 0, /*
+Whether there is an MS-Windows selection.
+*/
+       ())
+{
+  return IsClipboardFormatAvailable (CF_TEXT) ? Qt : Qnil;
+}
+
+DEFUN ("mswindows-delete-selection", Fmswindows_delete_selection, 0, 0, 0, /*
+Remove the current MS-Windows selection from the clipboard.
+*/
+       ())
+{
+  return EmptyClipboard () ? Qt : Qnil;
+}
+
+\f
+/************************************************************************/
+/*                            initialization                            */
+/************************************************************************/
+
+void
+syms_of_select_mswindows (void)
+{
+  DEFSUBR (Fmswindows_set_clipboard);
+  DEFSUBR (Fmswindows_get_clipboard);
+  DEFSUBR (Fmswindows_selection_exists_p);
+  DEFSUBR (Fmswindows_delete_selection);
+}
+
+void
+vars_of_select_mswindows (void)
+{
+}