1 /****************************************************************************
2 * Copyright 2018-2020,2021 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
28 ****************************************************************************/
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 ****************************************************************************/
37 * tput.c -- shellscript access to terminal capabilities
39 * by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
40 * Ross Ridge's mytinfo package.
43 #include <tparm_type.h>
44 #include <clear_cmd.h>
45 #include <reset_cmd.h>
50 #include <transform.h>
51 #include <tty_settings.h>
53 MODULE_ID("$Id: tput.c,v 1.88 2021/04/17 15:34:16 tom Exp $")
55 #define PUTS(s) fputs(s, stdout)
57 const char *_nc_progname = "tput";
59 static char *prg_name;
60 static bool is_init = FALSE;
61 static bool is_reset = FALSE;
62 static bool is_clear = FALSE;
64 static GCC_NORETURN void
65 quit(int status, const char *fmt, ...)
70 fprintf(stderr, "%s: ", prg_name);
71 vfprintf(stderr, fmt, argp);
72 fprintf(stderr, "\n");
77 static GCC_NORETURN void
80 #define KEEP(s) s "\n"
81 static const char msg[] =
85 KEEP(" -S << read commands from standard input")
86 KEEP(" -T TERM use this instead of $TERM")
87 KEEP(" -V print curses-version")
88 KEEP(" -x do not try to clear scrollback")
91 KEEP(" clear clear the screen")
92 KEEP(" init initialize the terminal")
93 KEEP(" reset reinitialize the terminal")
94 KEEP(" capname unlike clear/init/reset, print value for capability \"capname\"")
97 (void) fprintf(stderr, "Usage: %s [options] [command]\n", prg_name);
99 ExitProgram(ErrUsage);
103 check_aliases(char *name, bool program)
105 static char my_init[] = "init";
106 static char my_reset[] = "reset";
107 static char my_clear[] = "clear";
110 if ((is_init = same_program(name, program ? PROG_INIT : my_init)))
112 if ((is_reset = same_program(name, program ? PROG_RESET : my_reset)))
114 if ((is_clear = same_program(name, program ? PROG_CLEAR : my_clear)))
120 exit_code(int token, int value)
126 result = !value; /* TRUE=0, FALSE=1 */
129 result = 0; /* always zero */
132 result = value; /* 0=normal, 1=missing */
139 * Returns nonzero on error.
142 tput_cmd(int fd, TTY * saved_settings, bool opt_x, int argc, char *argv[])
144 NCURSES_CONST char *name;
148 bool termcap = FALSE;
151 name = check_aliases(argv[0], FALSE);
152 if (is_reset || is_init) {
155 int terasechar = -1; /* new erase character */
156 int intrchar = -1; /* new interrupt character */
157 int tkillchar = -1; /* new kill character */
160 reset_start(stdout, TRUE, FALSE);
161 reset_tty_settings(fd, saved_settings);
163 reset_start(stdout, FALSE, TRUE);
167 set_window_size(fd, &lines, &columns);
171 set_control_chars(saved_settings, terasechar, intrchar, tkillchar);
172 set_conversions(saved_settings);
173 if (send_init_strings(fd, &oldmode)) {
177 update_tty_settings(&oldmode, saved_settings);
181 if (strcmp(name, "longname") == 0) {
188 if (strcmp(name, "clear") == 0) {
189 return (clear_cmd(opt_x) == ERR) ? ErrUsage : 0;
190 } else if ((status = tigetflag(name)) != -1) {
191 return exit_code(BOOLEAN, status);
192 } else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
193 (void) printf("%d\n", status);
194 return exit_code(NUMBER, 0);
195 } else if ((s = tigetstr(name)) == CANCELLED_STRING) {
198 const struct name_table_entry *np;
201 if ((np = _nc_find_entry(name, _nc_get_hash_table(termcap))) != 0) {
202 switch (np->nte_type) {
204 name = boolnames[np->nte_index];
208 name = numnames[np->nte_index];
212 name = strnames[np->nte_index];
219 quit(ErrCapName, "unknown terminfo capability '%s'", name);
220 } else if (VALID_STRING(s)) {
224 long numbers[1 + NUM_PARM];
225 char *strings[1 + NUM_PARM];
226 char *p_is_s[NUM_PARM];
229 /* Nasty hack time. The tparm function needs to see numeric
230 * parameters as numbers, not as pointers to their string
234 for (k = 1; (k < argc) && (k <= NUM_PARM); k++) {
236 strings[k] = argv[k];
237 numbers[k] = strtol(argv[k], &tmp, 0);
238 if (tmp == 0 || *tmp != 0)
241 for (k = argc; k <= NUM_PARM; k++) {
246 paramType = tparm_type(name);
249 * If the capability is an extended one, analyze the string.
251 if (paramType == Numbers) {
252 struct name_table_entry const *entry_ptr;
253 entry_ptr = _nc_find_type_entry(name, STRING, FALSE);
254 if (entry_ptr == NULL) {
262 s = TPARM_2(s, numbers[1], strings[2]);
265 s = TPARM_3(s, numbers[1], strings[2], strings[3]);
268 #define myParam(n) numbers[n]
284 (void) _nc_tparm_analyze(s, p_is_s, &ignored);
285 #define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
301 /* use putp() in order to perform padding */
303 return exit_code(STRING, 0);
305 return exit_code(STRING, 1);
309 main(int argc, char **argv)
319 bool opt_x = FALSE; /* clear scrollback if possible */
323 prg_name = check_aliases(_nc_rootname(argv[0]), TRUE);
325 term = getenv("TERM");
327 while ((c = getopt(argc, argv, "ST:Vx")) != -1) {
338 puts(curses_version());
339 ExitProgram(EXIT_SUCCESS);
340 case 'x': /* do not try to clear scrollback */
349 is_alias = (is_clear || is_reset || is_init);
350 need_tty = ((is_reset || is_init) ||
352 (!strcmp(argv[optind], "reset") ||
353 !strcmp(argv[optind], "init"))));
356 * Modify the argument list to omit the options we processed.
359 if (optind-- < argc) {
369 if (term == 0 || *term == '\0')
370 quit(ErrUsage, "No value for $TERM and no -T specified");
372 fd = save_tty_settings(&tty_settings, need_tty);
374 if (setupterm(term, fd, &errret) != OK && errret <= 0)
375 quit(ErrTermType, "unknown terminal \"%s\"", term);
378 if ((argc <= 0) && !is_alias)
380 ExitProgram(tput_cmd(fd, &tty_settings, opt_x, argc, argv));
383 while (fgets(buf, sizeof(buf), stdin) != 0) {
384 char *argvec[16]; /* command, 9 parms, null, & slop */
388 /* crack the argument list into a dope vector */
389 for (cp = buf; *cp; cp++) {
390 if (isspace(UChar(*cp))) {
392 } else if (cp == buf || cp[-1] == 0) {
393 argvec[argnum++] = cp;
394 if (argnum >= (int) SIZEOF(argvec) - 1)
401 && tput_cmd(fd, &tty_settings, opt_x, argnum, argvec) != 0) {
403 result = ErrSystem(0); /* will return value >4 */