1 /****************************************************************************
2 * Copyright (c) 1998-2016,2017 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
36 * tput.c -- shellscript access to terminal capabilities
38 * by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
39 * Ross Ridge's mytinfo package.
42 #include <tparm_type.h>
43 #include <clear_cmd.h>
44 #include <reset_cmd.h>
47 #include <dump_entry.h>
50 #include <transform.h>
51 #include <tty_settings.h>
53 MODULE_ID("$Id: tput.c,v 1.72 2017/09/02 21:03:26 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;
65 quit(int status, const char *fmt,...)
70 fprintf(stderr, "%s: ", prg_name);
71 vfprintf(stderr, fmt, argp);
72 fprintf(stderr, "\n");
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(EXIT_FAILURE);
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 tput_cmd(int fd, TTY * saved_settings, bool opt_x, int argc, char *argv[])
141 NCURSES_CONST char *name;
145 bool termcap = FALSE;
148 name = check_aliases(argv[0], FALSE);
149 if (is_reset || is_init) {
152 int terasechar = -1; /* new erase character */
153 int intrchar = -1; /* new interrupt character */
154 int tkillchar = -1; /* new kill character */
157 reset_start(stdout, TRUE, FALSE);
158 reset_tty_settings(fd, saved_settings);
160 reset_start(stdout, FALSE, TRUE);
164 set_window_size(fd, &lines, &columns);
168 set_control_chars(saved_settings, terasechar, intrchar, tkillchar);
169 set_conversions(saved_settings);
170 if (send_init_strings(fd, &oldmode)) {
174 update_tty_settings(&oldmode, saved_settings);
178 if (strcmp(name, "longname") == 0) {
185 if (strcmp(name, "clear") == 0) {
186 return clear_cmd(opt_x);
187 } else if ((status = tigetflag(name)) != -1) {
188 return exit_code(BOOLEAN, status);
189 } else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
190 (void) printf("%d\n", status);
191 return exit_code(NUMBER, 0);
192 } else if ((s = tigetstr(name)) == CANCELLED_STRING) {
195 const struct name_table_entry *np;
198 if ((np = _nc_find_entry(name, _nc_get_hash_table(termcap))) != 0) {
199 switch (np->nte_type) {
201 name = boolnames[np->nte_index];
205 name = numnames[np->nte_index];
209 name = strnames[np->nte_index];
216 quit(4, "unknown terminfo capability '%s'", name);
217 } else if (VALID_STRING(s)) {
221 long numbers[1 + NUM_PARM];
222 char *strings[1 + NUM_PARM];
223 char *p_is_s[NUM_PARM];
225 /* Nasty hack time. The tparm function needs to see numeric
226 * parameters as numbers, not as pointers to their string
230 for (k = 1; k < argc; k++) {
232 strings[k] = argv[k];
233 numbers[k] = strtol(argv[k], &tmp, 0);
234 if (tmp == 0 || *tmp != 0)
237 for (k = argc; k <= NUM_PARM; k++) {
242 switch (tparm_type(name)) {
244 s = TPARM_2(s, numbers[1], strings[2]);
247 s = TPARM_3(s, numbers[1], strings[2], strings[3]);
251 (void) _nc_tparm_analyze(s, p_is_s, &ignored);
252 #define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
267 /* use putp() in order to perform padding */
269 return exit_code(STRING, 0);
271 return exit_code(STRING, 1);
275 main(int argc, char **argv)
285 bool opt_x = FALSE; /* clear scrollback if possible */
287 prg_name = check_aliases(_nc_rootname(argv[0]), TRUE);
289 term = getenv("TERM");
291 while ((c = getopt(argc, argv, "ST:V")) != -1) {
301 puts(curses_version());
302 ExitProgram(EXIT_SUCCESS);
303 case 'x': /* do not try to clear scrollback */
313 * Modify the argument list to omit the options we processed.
315 if (is_clear || is_reset || is_init) {
316 if (optind-- < argc) {
326 if (term == 0 || *term == '\0')
327 quit(2, "No value for $TERM and no -T specified");
329 fd = save_tty_settings(&tty_settings);
331 if (setupterm(term, fd, &errret) != OK && errret <= 0)
332 quit(3, "unknown terminal \"%s\"", term);
335 if ((argc <= 0) && !(is_clear || is_reset || is_init))
337 ExitProgram(tput_cmd(fd, &tty_settings, opt_x, argc, argv));
340 while (fgets(buf, sizeof(buf), stdin) != 0) {
341 char *argvec[16]; /* command, 9 parms, null, & slop */
345 /* crack the argument list into a dope vector */
346 for (cp = buf; *cp; cp++) {
347 if (isspace(UChar(*cp))) {
349 } else if (cp == buf || cp[-1] == 0) {
350 argvec[argnum++] = cp;
351 if (argnum >= (int) SIZEOF(argvec) - 1)
358 && tput_cmd(fd, &tty_settings, opt_x, argnum, argvec) != 0) {
360 result = 4; /* will return value >4 */