OpenSolaris Launch

1 files changed, 159 insertions, 0 deletions

diff --git a/usr/src/lib/libcurses/screen/dupwin.c b/usr/src/lib/libcurses/screen/dupwin.c
new file mode 100644
index 0000000000..9c4463492c
--- /dev/null
+++ b/usr/src/lib/libcurses/screen/dupwin.c
@@ -0,0 +1,159 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved	*/
+
+/*
+ * University Copyright- Copyright (c) 1982, 1986, 1988
+ * The Regents of the University of California
+ * All Rights Reserved
+ *
+ * University Acknowledgment- Portions of this document are derived from
+ * software developed by the University of California, Berkeley, and its
+ * contributors.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*LINTLIBRARY*/
+
+#include	<stdlib.h>
+#include	<string.h>
+#include	<sys/types.h>
+#include	"curses_inc.h"
+
+/*
+ * Duplicate a window.
+ *
+ * SS:	calling makenew to allocate a new window is wastefull, since
+ *	makenew initializes all the variables, and then we re-initialize
+ *	the desired values to these variables.
+ */
+
+WINDOW	*
+dupwin(WINDOW *win)
+{
+	WINDOW		*new;
+	int		i, ncolumns = win->_maxx, nlines = win->_maxy;
+	size_t		line_size = nlines * sizeof (short);
+	chtype		**wincp, **newcp;
+	int		ncolsav = ncolumns;
+
+	/* allocate storage for new window and do block copy of */
+	/* old one into new */
+
+	if ((new = (WINDOW *) malloc(sizeof (WINDOW))) == NULL)
+		goto out0;
+
+	(void) memcpy(new, win, sizeof (WINDOW));
+
+	/* allocate storage for "malloced" fields of the new window */
+
+	if ((new->_firstch = (short *)malloc((unsigned)2 * line_size)) == NULL)
+		goto out1;
+	else
+		win->_lastch = win->_firstch + nlines;
+
+	if ((new->_y = (chtype **) malloc(nlines * sizeof (chtype *))) ==
+	    NULL) {
+	/*
+	 * We put the free's here rather than after the image call, this
+	 * is because _image free's all the rest of the malloc'ed areas.
+	 */
+		free((char *)new->_firstch);
+out1:
+		free((char *)new);
+		goto out0;
+	}
+
+	if (_image(new) == ERR) {
+out0:
+		curs_errno = CURS_BAD_MALLOC;
+#ifdef	DEBUG
+		strcpy(curs_parm_err, "dupwin");
+		curserr();
+#endif	/* DEBUG */
+		return ((WINDOW *) NULL);
+	}
+
+	/* copy information from "malloced" areas of the old window into new */
+
+	wincp = win->_y;
+	newcp = new->_y;
+	for (i = 0; i < nlines; ++i, ++wincp, ++newcp) {
+		chtype		*ws, *we, *ns, *ne, wc;
+		int		n;
+
+		ws = *wincp;
+		we = ws + ncolsav - 1;
+		/* skip partial characters */
+		for (; ws <= we; ++ws)
+			if (!ISCBIT(*ws))
+				break;
+		for (; we >= ws; --we)
+			if (!ISCBIT(*we))
+				break;
+		if (we >= ws) {
+			wc = *we;
+			n = _curs_scrwidth[TYPE(wc)];
+			if ((we + n) <= (*wincp + ncolsav))
+				we += n;
+			ns = *newcp + (ws - *wincp);
+			ne = *newcp + (we - *wincp);
+			(void) memcpy((char *)ns, (char *)ws,
+			    (ne-ns)*sizeof (chtype));
+		} else
+			ns = ne = *newcp + ncolsav;
+		/* fill the rest with background chars */
+		wc = win->_bkgd;
+		for (ws = *newcp; ws < ns; ++ws)
+			*ws = wc;
+		for (ws = *newcp+ncolsav-1; ws >= ne; --ws)
+			*ws = wc;
+	}
+
+	(void) memcpy((char *)new->_firstch, (char *)win->_firstch,
+	    2 * line_size);
+
+	new->_flags |= _WINCHANGED;
+	new->_ndescs = 0;
+	/*
+	 * Just like we don't create this window as a subwin if the one
+	 * sent is, we don't create a padwin.  Besides, if the user
+	 * calls p*refresh a padwin will be created then.
+	 */
+	new->_padwin = new->_parent = (WINDOW *) NULL;
+	new->_pary = new->_parx = -1;
+
+	new->_index = win->_index;
+	new->_nbyte = win->_nbyte;
+	new->_insmode = win->_insmode;
+	(void) memcpy((char *)new->_waitc, (char *)win->_waitc,
+	    _csmax * sizeof (char));
+
+	return (new);
+}