whitespace and comment format fixes, no code changes

[oweals/busybox.git] / console-tools / reset.c

diff --git a/console-tools/reset.c b/console-tools/reset.c
index 593819baca47e508ee02e4b86233d7283b7ca144..614806ba754e8a0f8f45fe4a5d20e10004adee19 100644 (file)
--- a/console-tools/reset.c
+++ b/console-tools/reset.c
@@ -2,33 +2,64 @@
 /*
  * Mini reset implementation for busybox
  *
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  * Written by Erik Andersen and Kent Robotti <robotti@metconnect.com>
  *
- * This program 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 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config RESET
+//config:      bool "reset (275 bytes)"
+//config:      default y
+//config:      help
+//config:      This program is used to reset the terminal screen, if it
+//config:      gets messed up.
+
+//applet:IF_RESET(APPLET_NOEXEC(reset, reset, BB_DIR_USR_BIN, BB_SUID_DROP, reset))
+
+//kbuild:lib-$(CONFIG_RESET) += reset.o
+
+//usage:#define reset_trivial_usage
+//usage:       ""
+//usage:#define reset_full_usage "\n\n"
+//usage:       "Reset the screen"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include "busybox.h"
+/* "Standard" version of this tool is in ncurses package */
 
-extern int reset_main(int argc, char **argv)
+#include "libbb.h"
+
+#define ESC "\033"
+
+#if ENABLE_STTY
+int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+#endif
+
+int reset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int reset_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
-          printf("\033[?25h\033c\033[J");
-       return EXIT_SUCCESS;
-}
+       static const char *const args[] = {
+               "stty", "sane", NULL
+       };
+
+       /* no options, no getopt */
 
+       if (/*isatty(STDIN_FILENO) &&*/ isatty(STDOUT_FILENO)) {
+               /* See 'man 4 console_codes' for details:
+                * "ESC c"        -- Reset
+                * "ESC ( B"      -- Select G0 Character Set (B = US)
+                * "ESC [ m"      -- Reset all display attributes
+                * "ESC [ J"      -- Erase to the end of screen
+                * "ESC [ ? 25 h" -- Make cursor visible
+                */
+               printf(ESC"c" ESC"(B" ESC"[m" ESC"[J" ESC"[?25h");
+               /* http://bugs.busybox.net/view.php?id=1414:
+                * people want it to reset echo etc: */
+#if ENABLE_STTY
+               return stty_main(2, (char**)args);
+#else
+               /* Make sure stdout gets drained before we execvp */
+               fflush_all();
+               execvp("stty", (char**)args);
+#endif
+       }
+       return EXIT_SUCCESS;
+}