e18651243e
While I didn't plan another upgrade, This version incorporate fixes from kevans@ so let's upgrade to it
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/****************************************************************************
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* Copyright 2020 Thomas E. Dickey *
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* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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/*
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* clear.c -- clears the terminal's screen
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*/
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#define USE_LIBTINFO
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#include <clear_cmd.h>
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#include <tty_settings.h>
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MODULE_ID("$Id: clear.c,v 1.23 2020/02/02 23:34:34 tom Exp $")
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const char *_nc_progname = "clear";
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static void
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usage(void)
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{
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#define KEEP(s) s "\n"
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static const char msg[] =
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{
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KEEP("")
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KEEP("Options:")
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KEEP(" -T TERM use this instead of $TERM")
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KEEP(" -V print curses-version")
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KEEP(" -x do not try to clear scrollback")
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};
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#undef KEEP
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(void) fprintf(stderr, "Usage: %s [options]\n", _nc_progname);
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fputs(msg, stderr);
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ExitProgram(EXIT_FAILURE);
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}
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int
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main(
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int argc GCC_UNUSED,
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char *argv[]GCC_UNUSED)
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{
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TTY tty_settings;
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int fd;
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int c;
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char *term;
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bool opt_x = FALSE; /* clear scrollback if possible */
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_nc_progname = _nc_rootname(argv[0]);
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term = getenv("TERM");
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while ((c = getopt(argc, argv, "T:Vx")) != -1) {
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switch (c) {
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case 'T':
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use_env(FALSE);
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use_tioctl(TRUE);
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term = optarg;
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break;
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case 'V':
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puts(curses_version());
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ExitProgram(EXIT_SUCCESS);
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case 'x': /* do not try to clear scrollback */
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opt_x = TRUE;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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}
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if (optind < argc)
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usage();
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fd = save_tty_settings(&tty_settings, FALSE);
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setupterm(term, fd, (int *) 0);
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ExitProgram((clear_cmd(opt_x) == ERR)
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? EXIT_FAILURE
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: EXIT_SUCCESS);
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}
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