/*      $NetBSD: tput.c,v 1.26 2013/02/05 11:31:56 roy Exp $    */

/*-
 * Copyright (c) 1980, 1988, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1988, 1993\
 The Regents of the University of California.  All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)tput.c      8.3 (Berkeley) 4/28/95";
#endif
__RCSID("$NetBSD: tput.c,v 1.26 2013/02/05 11:31:56 roy Exp $");
#endif /* not lint */

#include <termios.h>

#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <term_private.h>
#include <term.h>
#include <unistd.h>

static void   usage(void) __dead;
static char **process(const char *, const char *, char **);

int
main(int argc, char **argv)
{
        int ch, exitval, n;
        char *term;
        const char *p, *s;
        size_t pl;

        term = NULL;
        while ((ch = getopt(argc, argv, "T:")) != -1)
                switch(ch) {
                case 'T':
                        term = optarg;
                        break;
                case '?':
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;

        if (!term && !(term = getenv("TERM")))
                errx(2, "No terminal type specified and no TERM "
                    "variable set in the environment.");
        setupterm(term, 0, NULL);
        for (exitval = 0; (p = *argv) != NULL; ++argv) {
                switch (*p) {
                case 'c':
                        if (!strcmp(p, "clear"))
                                p = "clear";
                        break;
                case 'i':
                        if (!strcmp(p, "init")) {
                                s = tigetstr("is1");
                                if (s != NULL)
                                        putp(s);
                                p = "is2";
                        }
                        break;
                case 'l':
                        if (!strcmp(p, "longname")) {
                                (void)printf("%s\n", longname());
                                continue;
                        }
                        break;
                case 'r':
                        if (!strcmp(p, "reset")) {
                                s = tigetstr("rs1");
                                if (s != NULL)
                                        putp(s);
                                p = "rs2";
                        }
                        break;
                }
                pl = strlen(p);
                if (((s = tigetstr(p)) != NULL && s != (char *)-1) ||
                    (pl <= 2 && (s = tgetstr(p, NULL)) != NULL))
                        argv = process(p, s, argv);
                else if ((((n = tigetnum(p)) != -1 && n != -2 ) ||
                           (pl <= 2 && (n = tgetnum(p)) != -1)))
                        (void)printf("%d\n", n);
                else {
                        exitval = tigetflag(p);
                        if (exitval == -1) {
                                if (pl <= 2)
                                        exitval = !tgetflag(p);
                                else
                                        exitval = 1;
                        } else
                                exitval = !exitval;
                }

                if (argv == NULL)
                        break;
        }
        return argv ? exitval : 2;
}

static char **
process(const char *cap, const char *str, char **argv)
{
        static const char errfew[] =
            "Not enough arguments (%d) for capability `%s'";
        static const char erresc[] =
            "Unknown %% escape (%s) for capability `%s'";
        static const char errnum[] =
            "Expected a numeric argument [%d] (%s) for capability `%s'";
        static const char errcharlong[] = 
            "Platform does not fit a string into a long for capability '%s'";
        int i, nparams, piss[TPARM_MAX];
        long nums[TPARM_MAX];
        char *strs[TPARM_MAX], *tmp;

        /* Count how many values we need for this capability. */
        errno = 0;
        memset(&piss, 0, sizeof(piss));
        nparams = _ti_parm_analyse(str, piss, TPARM_MAX);
        if (errno == EINVAL)
                errx(2, erresc, str, cap);

        /* Create our arrays of integers and strings */
        for (i = 0; i < nparams; i++) {
                if (*++argv == NULL || *argv[0] == '\0')
                        errx(2, errfew, nparams, cap);
                if (piss[i]) {
                        if (sizeof(char *) > sizeof(long) /* CONSTCOND */)
                                errx(2, errcharlong, cap);
                        strs[i] = *argv;
                } else {
                        errno = 0;
                        nums[i] = strtol(*argv, &tmp, 0);
                        if ((errno == ERANGE && 
                            (nums[i] == LONG_MIN || nums[i] == LONG_MAX)) ||
                            (errno != 0 && nums[i] == 0) ||
                            tmp == str ||
                            *tmp != '\0')
                                errx(2, errnum, i + 1, *argv, cap);
                }
        }

        /* And output */
#define p(i)    (i <= nparams ? \
                    (piss[i - 1] ? (long)strs[i - 1] : nums[i - 1]) : 0)
        putp(tparm(str, p(1), p(2), p(3), p(4), p(5), p(6), p(7), p(8), p(9)));

        return argv;
}

static void
usage(void)
{
        (void)fprintf(stderr,
            "Usage: %s [-T term] attribute [attribute-args] ...\n",
            getprogname());
        exit(2);
}