Return to tput.c CVS log

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Update ncurses and associated libraries (form, panel, menu) to
6.4-20230826 (from 5.7-20081102).

Based on result from Thomas Dickey's ncu2openbsd script and then
modified. Switches to the upstream tput. Major bump for the ncurses
libraries and for libedit and libreadline.

Help from tb, millert.

ok deraadt sthen

/*	$OpenBSD: tput.c,v 1.30 2023/10/17 09:52:11 nicm Exp $	*/

/****************************************************************************
 * Copyright 2018-2022,2023 Thomas E. Dickey                                *
 * Copyright 1998-2016,2017 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                        1996-on                 *
 ****************************************************************************/

/*
 * tput.c -- shellscript access to terminal capabilities
 *
 * by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
 * Ross Ridge's mytinfo package.
 */

#include <tparm_type.h>
#include <clear_cmd.h>
#include <reset_cmd.h>

#include <transform.h>
#include <tty_settings.h>



#define PUTS(s)		fputs(s, stdout)

const char *_nc_progname = "tput";

static bool opt_v = FALSE;	/* quiet, do not show warnings */
static bool opt_x = FALSE;	/* clear scrollback if possible */

static bool is_init = FALSE;
static bool is_reset = FALSE;
static bool is_clear = FALSE;

static GCC_NORETURN void
quit(int status, const char *fmt, ...)
{
    va_list argp;

    va_start(argp, fmt);
    fprintf(stderr, "%s: ", _nc_progname);
    vfprintf(stderr, fmt, argp);
    fprintf(stderr, "\n");
    va_end(argp);
    ExitProgram(status);
}

static GCC_NORETURN void
usage(const char *optstring)
{
#define KEEP(s) s "\n"
    static const char msg[] =
    {
	KEEP("")
	KEEP("Options:")
	KEEP("  -S <<       read commands from standard input")
	KEEP("  -T TERM     use this instead of $TERM")
	KEEP("  -V          print curses-version")
	KEEP("  -v          verbose, show warnings")
	KEEP("  -x          do not try to clear scrollback")
	KEEP("")
	KEEP("Commands:")
	KEEP("  clear       clear the screen")
	KEEP("  init        initialize the terminal")
	KEEP("  reset       reinitialize the terminal")
	KEEP("  capname     unlike clear/init/reset, print value for capability \"capname\"")
    };
#undef KEEP
    (void) fprintf(stderr, "Usage: %s [options] [command]\n", _nc_progname);
    if (optstring != NULL) {
	const char *s = msg;
	while (*s != '\0') {
	    fputc(UChar(*s), stderr);
	    if (!strncmp(s, "  -", 3)) {
		if (strchr(optstring, s[3]) == NULL)
		    s = strchr(s, '\n') + 1;
	    } else if (!strncmp(s, "\n\nC", 3))
		break;
	    ++s;
	}
    } else {
	fputs(msg, stderr);
    }
    ExitProgram(ErrUsage);
}

static char *
check_aliases(char *name, bool program)
{
    static char my_init[] = "init";
    static char my_reset[] = "reset";
    static char my_clear[] = "clear";

    char *result = name;
    if ((is_init = same_program(name, program ? PROG_INIT : my_init)))
	result = my_init;
    if ((is_reset = same_program(name, program ? PROG_RESET : my_reset)))
	result = my_reset;
    if ((is_clear = same_program(name, program ? PROG_CLEAR : my_clear)))
	result = my_clear;
    return result;
}

static int
exit_code(int token, int value)
{
    int result = 99;

    switch (token) {
    case BOOLEAN:
	result = !value;	/* TRUE=0, FALSE=1 */
	break;
    case NUMBER:
	result = 0;		/* always zero */
	break;
    case STRING:
	result = value;		/* 0=normal, 1=missing */
	break;
    }
    return result;
}

/*
 * Returns nonzero on error.
 */
static int
tput_cmd(int fd, TTY * settings, int argc, char **argv, int *used)
{
    NCURSES_CONST char *name;
    char *s;
    int status;
#if !PURE_TERMINFO
    bool termcap = FALSE;
#endif

    name = check_aliases(argv[0], FALSE);
    *used = 1;
    if (is_reset || is_init) {
	TTY oldmode = *settings;

	int terasechar = -1;	/* new erase character */
	int intrchar = -1;	/* new interrupt character */
	int tkillchar = -1;	/* new kill character */

	if (is_reset) {
	    reset_start(stdout, TRUE, FALSE);
	    reset_tty_settings(fd, settings, FALSE);
	} else {
	    reset_start(stdout, FALSE, TRUE);
	}

#if HAVE_SIZECHANGE
	set_window_size(fd, &lines, &columns);
#else
	(void) fd;
#endif
	set_control_chars(settings, terasechar, intrchar, tkillchar);
	set_conversions(settings);

	if (send_init_strings(fd, &oldmode)) {
	    reset_flush();
	}

	update_tty_settings(&oldmode, settings);
	return 0;
    }

    if (strcmp(name, "longname") == 0) {
	PUTS(longname());
	return 0;
    }
#if !PURE_TERMINFO
  retry:
#endif
    if (strcmp(name, "clear") == 0) {
	return (clear_cmd(opt_x) == ERR) ? ErrUsage : 0;
    } else if ((status = tigetflag(name)) != -1) {
	return exit_code(BOOLEAN, status);
    } else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
	(void) printf("%d\n", status);
	return exit_code(NUMBER, 0);
    } else if ((s = tigetstr(name)) == CANCELLED_STRING) {
#if !PURE_TERMINFO
	if (!termcap) {
	    const struct name_table_entry *np;

	    termcap = TRUE;
	    if ((np = _nc_find_entry(name, _nc_get_hash_table(termcap))) != 0) {
		switch (np->nte_type) {
		case BOOLEAN:
		    name = boolnames[np->nte_index];
		    break;

		case NUMBER:
		    name = numnames[np->nte_index];
		    break;

		case STRING:
		    name = strnames[np->nte_index];
		    break;
		}
		goto retry;
	    }
	}
#endif
	quit(ErrCapName, "unknown terminfo capability '%s'", name);
    } else if (VALID_STRING(s)) {
	if (argc > 1) {
	    int k;
	    int narg;
	    int analyzed;
	    int provided;
	    int popcount;
	    long numbers[1 + NUM_PARM];
	    char *strings[1 + NUM_PARM];
	    char *p_is_s[NUM_PARM];
	    TParams paramType;

	    /* Nasty hack time. The tparm function needs to see numeric
	     * parameters as numbers, not as pointers to their string
	     * representations
	     */

	    for (k = 1; (k < argc) && (k <= NUM_PARM); k++) {
		char *tmp = 0;
		strings[k] = argv[k];
		numbers[k] = strtol(argv[k], &tmp, 0);
		if (tmp == 0 || *tmp != 0)
		    numbers[k] = 0;
	    }
	    for (k = argc; k <= NUM_PARM; k++) {
		numbers[k] = 0;
		strings[k] = 0;
	    }

	    paramType = tparm_type(name);
#if NCURSES_XNAMES
	    /*
	     * If the capability is an extended one, analyze the string.
	     */
	    if (paramType == Numbers) {
		struct name_table_entry const *entry_ptr;
		entry_ptr = _nc_find_type_entry(name, STRING, FALSE);
		if (entry_ptr == NULL) {
		    paramType = Other;
		}
	    }
#endif

	    popcount = 0;
	    _nc_reset_tparm(NULL);
	    /*
	     * Count the number of numeric parameters which are provided.
	     */
	    provided = 0;
	    for (narg = 1; narg < argc; ++narg) {
		char *ending = NULL;
		long check = strtol(argv[narg], &ending, 10);
		if (check < 0 || ending == argv[narg] || *ending != '\0')
		    break;
		provided = narg;
	    }
	    switch (paramType) {
	    case Str:
		s = TPARM_1(s, strings[1]);
		analyzed = 1;
		if (provided == 0 && argc >= 1)
		    provided++;
		break;
	    case Str_Str:
		s = TPARM_2(s, strings[1], strings[2]);
		analyzed = 2;
		if (provided == 0 && argc >= 1)
		    provided++;
		if (provided == 1 && argc >= 2)
		    provided++;
		break;
	    case Num_Str:
		s = TPARM_2(s, numbers[1], strings[2]);
		analyzed = 2;
		if (provided == 1 && argc >= 2)
		    provided++;
		break;
	    case Num_Str_Str:
		s = TPARM_3(s, numbers[1], strings[2], strings[3]);
		analyzed = 3;
		if (provided == 1 && argc >= 2)
		    provided++;
		if (provided == 2 && argc >= 3)
		    provided++;
		break;
	    case Numbers:
		analyzed = _nc_tparm_analyze(NULL, s, p_is_s, &popcount);
#define myParam(n) numbers[n]
		s = TIPARM_9(s,
			     myParam(1),
			     myParam(2),
			     myParam(3),
			     myParam(4),
			     myParam(5),
			     myParam(6),
			     myParam(7),
			     myParam(8),
			     myParam(9));
#undef myParam
		break;
	    case Other:
		/* FALLTHRU */
	    default:
		analyzed = _nc_tparm_analyze(NULL, s, p_is_s, &popcount);
#define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
		s = TPARM_9(s,
			    myParam(1),
			    myParam(2),
			    myParam(3),
			    myParam(4),
			    myParam(5),
			    myParam(6),
			    myParam(7),
			    myParam(8),
			    myParam(9));
#undef myParam
		break;
	    }
	    if (analyzed < popcount) {
		analyzed = popcount;
	    }
	    if (opt_v && (analyzed != provided)) {
		fprintf(stderr, "%s: %s parameters for \"%s\"\n",
			_nc_progname,
			(analyzed < provided ? "extra" : "missing"),
			argv[0]);
	    }
	    *used += provided;
	}

	/* use putp() in order to perform padding */
	putp(s);
	return exit_code(STRING, 0);
    }
    return exit_code(STRING, 1);
}

int
main(int argc, char **argv)
{
    char *term;
    int errret;
    bool cmdline = TRUE;
    int c;
    char buf[BUFSIZ];
    int result = 0;
    int fd;
    int used;
    TTY old_settings;
    TTY tty_settings;
    bool is_alias;
    bool need_tty;

    if (pledge("stdio rpath wpath tty", NULL) == -1) {
        perror("pledge");
        exit(1);
    }

    _nc_progname = check_aliases(_nc_rootname(argv[0]), TRUE);
    is_alias = (is_clear || is_reset || is_init);

    term = getenv("TERM");

    while ((c = getopt(argc, argv, is_alias ? "T:Vvx" : "ST:Vvx")) != -1) {
	switch (c) {
	case 'S':
	    cmdline = FALSE;
	    break;
	case 'T':
	    use_env(FALSE);
	    use_tioctl(TRUE);
	    term = optarg;
	    break;
	case 'V':
	    puts(curses_version());
	    ExitProgram(EXIT_SUCCESS);
	case 'v':		/* verbose */
	    opt_v = TRUE;
	    break;
	case 'x':		/* do not try to clear scrollback */
	    opt_x = TRUE;
	    break;
	default:
	    usage(is_alias ? "TVx" : NULL);
	    /* NOTREACHED */
	}
    }

    need_tty = ((is_reset || is_init) ||
		(optind < argc &&
		 (!strcmp(argv[optind], "reset") ||
		  !strcmp(argv[optind], "init"))));

    /*
     * Modify the argument list to omit the options we processed.
     */
    if (is_alias) {
	if (optind-- < argc) {
	    argc -= optind;
	    argv += optind;
	}
	argv[0] = strdup(_nc_progname);
    } else {
	argc -= optind;
	argv += optind;
    }

    if (term == 0 || *term == '\0')
	quit(ErrUsage, "No value for $TERM and no -T specified");

    fd = save_tty_settings(&tty_settings, need_tty);
    old_settings = tty_settings;

    if (setupterm(term, fd, &errret) != OK && errret <= 0)
	quit(ErrTermType, "unknown terminal \"%s\"", term);

    if (cmdline) {
	int code = 0;
	if ((argc <= 0) && !is_alias)
	    usage(NULL);
	while (argc > 0) {
	    tty_settings = old_settings;
	    code = tput_cmd(fd, &tty_settings, argc, argv, &used);
	    if (code != 0)
		break;
	    argc -= used;
	    argv += used;
	}
	ExitProgram(code);
    }

    while (fgets(buf, sizeof(buf), stdin) != 0) {
	size_t need = strlen(buf);
	char **argvec = typeCalloc(char *, need + 1);
	char **argnow;
	int argnum = 0;
	char *cp;

	if (argvec == NULL) {
	    quit(ErrSystem(1), strerror(errno));
	}

	/* split the buffer into tokens */
	for (cp = buf; *cp; cp++) {
	    if (isspace(UChar(*cp))) {
		*cp = '\0';
	    } else if (cp == buf || cp[-1] == '\0') {
		argvec[argnum++] = cp;
		if (argnum >= (int) need)
		    break;
	    }
	}

	argnow = argvec;
	while (argnum > 0) {
	    int code;
	    tty_settings = old_settings;
	    code = tput_cmd(fd, &tty_settings, argnum, argnow, &used);
	    if (code != 0) {
		if (result == 0)
		    result = ErrSystem(0);	/* will return value >4 */
		++result;
	    }
	    argnum -= used;
	    argnow += used;
	}
	free(argvec);
    }

    ExitProgram(result);
}