Base version of ncurses-5.7 library
diff --git a/ncurses/base/lib_bkgd.c b/ncurses/base/lib_bkgd.c
new file mode 100644
index 0000000..c99e0c5
--- /dev/null
+++ b/ncurses/base/lib_bkgd.c
@@ -0,0 +1,156 @@
+/****************************************************************************
+ * Copyright (c) 1998-2006,2008 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Juergen Pfeifer 1997 *
+ * and: Sven Verdoolaege 2000 *
+ * and: Thomas E. Dickey 1996-on *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_bkgd.c,v 1.36 2008/03/23 00:09:14 tom Exp $")
+
+/*
+ * Set the window's background information.
+ */
+#if USE_WIDEC_SUPPORT
+NCURSES_EXPORT(void)
+#else
+static NCURSES_INLINE void
+#endif
+wbkgrndset(WINDOW *win, const ARG_CH_T ch)
+{
+ T((T_CALLED("wbkgdset(%p,%s)"), win, _tracech_t(ch)));
+
+ if (win) {
+ attr_t off = AttrOf(win->_nc_bkgd);
+ attr_t on = AttrOf(CHDEREF(ch));
+
+ toggle_attr_off(WINDOW_ATTRS(win), off);
+ toggle_attr_on(WINDOW_ATTRS(win), on);
+
+#if NCURSES_EXT_COLORS
+ {
+ int pair;
+
+ if ((pair = GetPair(win->_nc_bkgd)) != 0)
+ SET_WINDOW_PAIR(win, 0);
+ if ((pair = GetPair(CHDEREF(ch))) != 0)
+ SET_WINDOW_PAIR(win, pair);
+ }
+#endif
+
+ if (CharOf(CHDEREF(ch)) == L('\0')) {
+ SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch)));
+ if_EXT_COLORS(SetPair(win->_nc_bkgd, GetPair(CHDEREF(ch))));
+ } else {
+ win->_nc_bkgd = CHDEREF(ch);
+ }
+#if USE_WIDEC_SUPPORT
+ /*
+ * If we're compiled for wide-character support, _bkgrnd is the
+ * preferred location for the background information since it stores
+ * more than _bkgd. Update _bkgd each time we modify _bkgrnd, so the
+ * macro getbkgd() will work.
+ */
+ {
+ cchar_t wch;
+ int tmp;
+
+ wgetbkgrnd(win, &wch);
+ tmp = _nc_to_char((wint_t) CharOf(wch));
+
+ win->_bkgd = (((tmp == EOF) ? ' ' : (chtype) tmp)
+ | (AttrOf(wch) & ALL_BUT_COLOR)
+ | COLOR_PAIR(GET_WINDOW_PAIR(win)));
+ }
+#endif
+ }
+ returnVoid;
+}
+
+NCURSES_EXPORT(void)
+wbkgdset(WINDOW *win, chtype ch)
+{
+ NCURSES_CH_T wch;
+ SetChar2(wch, ch);
+ wbkgrndset(win, CHREF(wch));
+}
+
+/*
+ * Set the window's background information and apply it to each cell.
+ */
+#if USE_WIDEC_SUPPORT
+NCURSES_EXPORT(int)
+#else
+static NCURSES_INLINE int
+#undef wbkgrnd
+#endif
+wbkgrnd(WINDOW *win, const ARG_CH_T ch)
+{
+ int code = ERR;
+ int x, y;
+ NCURSES_CH_T new_bkgd = CHDEREF(ch);
+
+ T((T_CALLED("wbkgd(%p,%s)"), win, _tracech_t(ch)));
+
+ if (win) {
+ NCURSES_CH_T old_bkgrnd;
+ wgetbkgrnd(win, &old_bkgrnd);
+
+ wbkgrndset(win, CHREF(new_bkgd));
+ wattrset(win, AttrOf(win->_nc_bkgd));
+
+ for (y = 0; y <= win->_maxy; y++) {
+ for (x = 0; x <= win->_maxx; x++) {
+ if (CharEq(win->_line[y].text[x], old_bkgrnd)) {
+ win->_line[y].text[x] = win->_nc_bkgd;
+ } else {
+ NCURSES_CH_T wch = win->_line[y].text[x];
+ RemAttr(wch, (~(A_ALTCHARSET | A_CHARTEXT)));
+ win->_line[y].text[x] = _nc_render(win, wch);
+ }
+ }
+ }
+ touchwin(win);
+ _nc_synchook(win);
+ code = OK;
+ }
+ returnCode(code);
+}
+
+NCURSES_EXPORT(int)
+wbkgd(WINDOW *win, chtype ch)
+{
+ NCURSES_CH_T wch;
+ SetChar2(wch, ch);
+ return wbkgrnd(win, CHREF(wch));
+}