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-rw-r--r--progs/clear_cmd.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/progs/clear_cmd.c b/progs/clear_cmd.c
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+/****************************************************************************
+ * Copyright (c) 2016-2017,2018 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: Thomas E. Dickey *
+ ****************************************************************************/
+
+/*
+ * clear.c -- clears the terminal's screen
+ */
+
+#define USE_LIBTINFO
+#include <clear_cmd.h>
+
+MODULE_ID("$Id: clear_cmd.c,v 1.4 2018/08/04 18:43:22 Nicholas.Marriott Exp $")
+
+static int
+putch(int c)
+{
+ return putchar(c);
+}
+
+int
+clear_cmd(bool legacy)
+{
+ int retval = tputs(clear_screen, lines > 0 ? lines : 1, putch);
+ if (!legacy) {
+ /* Clear the scrollback buffer if possible. */
+ char *E3 = tigetstr("E3");
+ if (E3)
+ (void) tputs(E3, lines > 0 ? lines : 1, putch);
+ }
+ return retval;
+}