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/* $OpenBSD: tput.c,v 1.22 2015/11/16 03:03:28 deraadt Exp $ */ |
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/* |
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* Copyright (c) 1999 Todd C. Miller <Todd.Miller@courtesan.com> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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/*- |
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* Copyright (c) 1980, 1988, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <ctype.h> |
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#include <err.h> |
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#include <curses.h> |
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#include <term.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <termios.h> |
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#include <unistd.h> |
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#include <limits.h> |
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#include <string.h> |
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#define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b)) |
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#include <sys/wait.h> |
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static void init(void); |
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static char **process(char *, char *, char **); |
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static void reset(void); |
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static void set_margins(void); |
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static void usage(void); |
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extern char *__progname; |
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int |
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main(int argc, char *argv[]) |
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{ |
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int ch, exitval, n, Sflag; |
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size_t len; |
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char *p, *term, *str; |
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char **oargv; |
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if (pledge("stdio rpath wpath tty cpath", NULL) == -1) |
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err(1, "pledge"); |
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oargv = argv; |
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term = NULL; |
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Sflag = exitval = 0; |
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while ((ch = getopt(argc, argv, "ST:")) != -1) |
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switch(ch) { |
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case 'T': |
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term = optarg; |
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break; |
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case 'S': |
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Sflag = 1; |
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break; |
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case '?': |
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default: |
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usage(); |
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} |
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argc -= optind; |
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argv += optind; |
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if (Sflag && argc > 0) |
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usage(); |
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if (!term && !(term = getenv("TERM"))) |
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errx(2, "No value for $TERM and no -T specified"); |
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/* |
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* NOTE: tgetent() will call setupterm() and set ospeed for us |
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* (this is ncurses-specific behavior) |
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*/ |
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if (tgetent(NULL, term) != 1) |
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errx(3, "Unknown terminal type `%s'", term); |
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if (strcmp(__progname, "clear") == 0) { |
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if (Sflag) |
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usage(); |
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argv = oargv; |
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*argv = __progname; |
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*(argv+1) = NULL; |
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} |
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if (Sflag) { |
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char **av; |
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/* Build new argv based on stdin */ |
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argc = n = 0; |
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av = NULL; |
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while ((str = fgetln(stdin, &len)) != NULL) { |
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if (str[len-1] != '\n') |
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errx(1, "premature EOF"); |
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str[len-1] = '\0'; |
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while ((p = strsep(&str, " \t")) != NULL) { |
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/* grow av as needed */ |
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if (argc + 1 >= n) { |
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n += 64; |
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av = reallocarray(av, n, |
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sizeof(char *)); |
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if (av == NULL) |
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errx(1, "out of memory"); |
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} |
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if (*p != '\0' && |
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(av[argc++] = strdup(p)) == NULL) |
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errx(1, "out of memory"); |
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} |
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} |
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if (argc > 0) { |
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av[argc] = NULL; |
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argv = av; |
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} |
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} |
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while ((p = *argv++)) { |
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switch (*p) { |
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case 'i': |
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if (!strcmp(p, "init")) { |
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init(); |
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continue; |
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} |
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break; |
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case 'l': |
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if (!strcmp(p, "longname")) { |
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puts(longname()); |
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continue; |
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} |
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break; |
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case 'r': |
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if (!strcmp(p, "reset")) { |
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reset(); |
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continue; |
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} |
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break; |
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} |
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/* First try as terminfo */ |
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if ((str = tigetstr(p)) && str != (char *)-1) |
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argv = process(p, str, argv); |
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else if ((n = tigetnum(p)) != -2) |
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(void)printf("%d\n", n); |
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else if ((n = tigetflag(p)) != -1) |
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exitval = !n; |
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/* Then fall back on termcap */ |
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else if ((str = tgetstr(p, NULL))) |
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argv = process(p, str, argv); |
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else if ((n = tgetnum(p)) != -1) |
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(void)printf("%d\n", n); |
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else if ((exitval = tgetflag(p)) != 0) |
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exitval = !exitval; |
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else { |
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warnx("Unknown terminfo capability `%s'", p); |
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exitval = 4; |
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} |
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} |
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exit(exitval); |
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} |
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static char ** |
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process(char *cap, char *str, char **argv) |
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{ |
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char *cp, *s, *nargv[9]; |
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int arg_need, popcount, i; |
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/* Count how many values we need for this capability. */ |
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for (cp = str, arg_need = popcount = 0; *cp != '\0'; cp++) { |
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if (*cp == '%') { |
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switch (*++cp) { |
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case '%': |
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cp++; |
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break; |
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case 'i': |
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if (popcount < 2) |
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popcount = 2; |
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break; |
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case 'p': |
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cp++; |
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if (isdigit((unsigned char)cp[1]) && |
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popcount < cp[1] - '0') |
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popcount = cp[1] - '0'; |
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break; |
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case 'd': |
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case 's': |
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case '0': |
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case '1': |
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case '2': |
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case '3': |
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case '4': |
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case '5': |
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case '6': |
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case '7': |
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case '8': |
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case '9': |
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case '.': |
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case '+': |
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arg_need++; |
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break; |
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default: |
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break; |
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} |
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} |
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} |
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arg_need = MAXIMUM(arg_need, popcount); |
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if (arg_need > 9) |
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errx(2, "too many arguments (%d) for capability `%s'", |
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arg_need, cap); |
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for (i = 0; i < arg_need; i++) { |
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long l; |
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if (argv[i] == NULL) |
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errx(2, "not enough arguments (%d) for capability `%s'", |
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arg_need, cap); |
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/* convert ascii representation of numbers to longs */ |
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if (isdigit((unsigned char)argv[i][0]) |
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&& (l = strtol(argv[i], &cp, 10)) >= 0 |
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&& l < LONG_MAX && *cp == '\0') |
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nargv[i] = (char *)l; |
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else |
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nargv[i] = argv[i]; |
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} |
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s = tparm(str, nargv[0], nargv[1], nargv[2], nargv[3], |
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nargv[4], nargv[5], nargv[6], nargv[7], nargv[8]); |
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putp(s); |
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fflush(stdout); |
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return (argv + arg_need); |
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} |
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static void |
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init(void) |
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{ |
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FILE *ifile; |
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size_t len; |
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char *buf; |
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int wstatus; |
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if (init_prog && !issetugid()) { |
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switch (vfork()) { |
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case -1: |
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err(4, "vfork"); |
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break; |
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case 0: |
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/* child */ |
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execl(init_prog, init_prog, (char *)NULL); |
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_exit(127); |
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break; |
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default: |
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wait(&wstatus); |
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/* parent */ |
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break; |
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} |
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} |
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if (init_1string) |
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putp(init_1string); |
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if (init_2string) |
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putp(init_2string); |
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set_margins(); |
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/* always use 8 space tabs */ |
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if (init_tabs != 8 && clear_all_tabs && set_tab) { |
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int i; |
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putp(clear_all_tabs); |
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for (i = 0; i < (columns - 1) / 8; i++) { |
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if (parm_right_cursor) |
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putp(tparm(parm_right_cursor, 8)); |
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else |
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fputs(" ", stdout); |
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putp(set_tab); |
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} |
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} |
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if (init_file && !issetugid() && (ifile = fopen(init_file, "r"))) { |
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while ((buf = fgetln(ifile, &len)) != NULL) { |
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if (buf[len-1] != '\n') |
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errx(1, "premature EOF reading %s", init_file); |
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buf[len-1] = '\0'; |
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putp(buf); |
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} |
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fclose(ifile); |
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} |
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if (init_3string) |
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putp(init_3string); |
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fflush(stdout); |
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} |
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321 |
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static void |
322 |
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reset(void) |
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{ |
324 |
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FILE *rfile; |
325 |
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size_t len; |
326 |
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char *buf; |
327 |
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328 |
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if (reset_1string) |
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putp(reset_1string); |
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if (reset_2string) |
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putp(reset_2string); |
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set_margins(); |
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if (reset_file && !issetugid() && (rfile = fopen(reset_file, "r"))) { |
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while ((buf = fgetln(rfile, &len)) != NULL) { |
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if (buf[len-1] != '\n') |
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errx(1, "premature EOF reading %s", reset_file); |
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buf[len-1] = '\0'; |
338 |
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putp(buf); |
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} |
340 |
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fclose(rfile); |
341 |
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} |
342 |
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if (reset_3string) |
343 |
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putp(reset_3string); |
344 |
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fflush(stdout); |
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} |
346 |
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347 |
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static void |
348 |
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set_margins(void) |
349 |
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{ |
350 |
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|
351 |
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/* |
352 |
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* Four possibilities: |
353 |
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* 1) we have set_lr_margin and can set things with one call |
354 |
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* 2) we have set_{left,right}_margin_parm, use two calls |
355 |
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* 3) we have set_{left,right}_margin, set based on position |
356 |
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* 4) none of the above, leave things the way they are |
357 |
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*/ |
358 |
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if (set_lr_margin) { |
359 |
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putp(tparm(set_lr_margin, 0, columns - 1)); |
360 |
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} else if (set_left_margin_parm && set_right_margin_parm) { |
361 |
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putp(tparm(set_left_margin_parm, 0)); |
362 |
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putp(tparm(set_right_margin_parm, columns - 1)); |
363 |
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} else if (set_left_margin && set_right_margin && clear_margins) { |
364 |
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putp(clear_margins); |
365 |
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|
366 |
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/* go to column 0 and set the left margin */ |
367 |
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putp(carriage_return ? carriage_return : "\r"); |
368 |
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putp(set_left_margin); |
369 |
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|
370 |
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/* go to last column and set the right margin */ |
371 |
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if (parm_right_cursor) |
372 |
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putp(tparm(parm_right_cursor, columns - 1)); |
373 |
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else |
374 |
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printf("%*s", columns - 1, " "); |
375 |
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putp(set_right_margin); |
376 |
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putp(carriage_return ? carriage_return : "\r"); |
377 |
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} |
378 |
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fflush(stdout); |
379 |
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} |
380 |
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|
381 |
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static void |
382 |
|
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usage(void) |
383 |
|
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{ |
384 |
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|
385 |
|
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if (strcmp(__progname, "clear") == 0) |
386 |
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(void)fprintf(stderr, "usage: %s [-T term]\n", __progname); |
387 |
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else |
388 |
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(void)fprintf(stderr, |
389 |
|
|
"usage: %s [-T term] attribute [attribute-args] ...\n" |
390 |
|
|
" %s [-T term] -S\n", __progname, __progname); |
391 |
|
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exit(1); |
392 |
|
|
} |