Add ncurses 6.4

third_party/ncurses/lib_kernel.c

@@ -0,0 +1,195 @@
+/****************************************************************************
+ * Copyright 2020,2022 Thomas E. Dickey                                     *
+ * Copyright 1998-2009,2010 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: Thomas E. Dickey                        2002                    *
+ *     and: Juergen Pfeifer                         2009                    *
+ ****************************************************************************/
+
+/*
+ *	lib_kernel.c
+ *
+ *	Misc. low-level routines:
+ *		erasechar()
+ *		killchar()
+ *		flushinp()
+ *
+ * The baudrate() and delay_output() functions could logically live here,
+ * but are in other modules to reduce the static-link size of programs
+ * that use only these facilities.
+ */
+
+#include "curses.priv.h"
+
+MODULE_ID("$Id: lib_kernel.c,v 1.35 2022/07/28 20:14:51 tom Exp $")
+
+#ifdef TERMIOS
+static int
+_nc_vdisable(void)
+{
+    int value = -1;
+#if defined(_POSIX_VDISABLE) && HAVE_UNISTD_H
+    value = _POSIX_VDISABLE;
+#endif
+#if defined(_PC_VDISABLE) && HAVE_FPATHCONF
+    if (value == -1) {
+	value = (int) fpathconf(0, _PC_VDISABLE);
+	if (value == -1) {
+	    value = 0377;
+	}
+    }
+#elif defined(VDISABLE)
+    if (value == -1)
+	value = VDISABLE;
+#endif
+    return value;
+}
+#endif /* TERMIOS */
+
+/*
+ *	erasechar()
+ *
+ *	Return erase character as given in cur_term->Ottyb.
+ *
+ */
+
+NCURSES_EXPORT(char)
+NCURSES_SP_NAME(erasechar) (NCURSES_SP_DCL0)
+{
+    int result = ERR;
+    TERMINAL *termp = TerminalOf(SP_PARM);
+
+    T((T_CALLED("erasechar(%p)"), (void *) SP_PARM));
+
+    if (termp != 0) {
+#ifdef TERMIOS
+	result = termp->Ottyb.c_cc[VERASE];
+	if (result == _nc_vdisable())
+	    result = ERR;
+#elif defined(EXP_WIN32_DRIVER)
+	result = ERR;
+#else
+	result = termp->Ottyb.sg_erase;
+#endif
+    }
+    returnChar((char) result);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(char)
+erasechar(void)
+{
+    return NCURSES_SP_NAME(erasechar) (CURRENT_SCREEN);
+}
+#endif
+
+/*
+ *	killchar()
+ *
+ *	Return kill character as given in cur_term->Ottyb.
+ *
+ */
+
+NCURSES_EXPORT(char)
+NCURSES_SP_NAME(killchar) (NCURSES_SP_DCL0)
+{
+    int result = ERR;
+    TERMINAL *termp = TerminalOf(SP_PARM);
+
+    T((T_CALLED("killchar(%p)"), (void *) SP_PARM));
+
+    if (termp != 0) {
+#ifdef TERMIOS
+	result = termp->Ottyb.c_cc[VKILL];
+	if (result == _nc_vdisable())
+	    result = ERR;
+#elif defined(EXP_WIN32_DRIVER)
+	result = ERR;
+#else
+	result = termp->Ottyb.sg_kill;
+#endif
+    }
+    returnChar((char) result);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(char)
+killchar(void)
+{
+    return NCURSES_SP_NAME(killchar) (CURRENT_SCREEN);
+}
+#endif
+
+/*
+ *	flushinp()
+ *
+ *	Flush any input on cur_term->Filedes
+ *
+ */
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(flushinp) (NCURSES_SP_DCL0)
+{
+    TERMINAL *termp = TerminalOf(SP_PARM);
+
+    T((T_CALLED("flushinp(%p)"), (void *) SP_PARM));
+
+    if (termp != 0) {
+#ifdef TERMIOS
+	tcflush(termp->Filedes, TCIFLUSH);
+#else
+	errno = 0;
+	do {
+#if defined(EXP_WIN32_DRIVER)
+	    _nc_console_flush(_nc_console_fd2handle(termp->Filedes));
+#else
+	    ioctl(termp->Filedes, TIOCFLUSH, 0);
+#endif
+	} while
+	    (errno == EINTR);
+#endif
+	if (SP_PARM) {
+	    SP_PARM->_fifohead = -1;
+	    SP_PARM->_fifotail = 0;
+	    SP_PARM->_fifopeek = 0;
+	}
+	returnCode(OK);
+    }
+    returnCode(ERR);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+flushinp(void)
+{
+    return NCURSES_SP_NAME(flushinp) (CURRENT_SCREEN);
+}
+#endif