1 /****************************************************************************
2 * Copyright (c) 1998-2016,2017 Free Software Foundation, Inc. *
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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, *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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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 1.78 2017/10/14 20:46:43 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(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];
228 /* Nasty hack time. The tparm function needs to see numeric
229 * parameters as numbers, not as pointers to their string
233 for (k = 1; k < argc; k++) {
235 strings[k] = argv[k];
236 numbers[k] = strtol(argv[k], &tmp, 0);
237 if (tmp == 0 || *tmp != 0)
240 for (k = argc; k <= NUM_PARM; k++) {
245 switch (tparm_type(name)) {
247 s = TPARM_2(s, numbers[1], strings[2]);
250 s = TPARM_3(s, numbers[1], strings[2], strings[3]);
254 (void) _nc_tparm_analyze(s, p_is_s, &ignored);
255 #define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
270 /* use putp() in order to perform padding */
272 return exit_code(STRING, 0);
274 return exit_code(STRING, 1);
278 main(int argc, char **argv)
288 bool opt_x = FALSE; /* clear scrollback if possible */
292 prg_name = check_aliases(_nc_rootname(argv[0]), TRUE);
294 term = getenv("TERM");
296 while ((c = getopt(argc, argv, "ST:V")) != -1) {
307 puts(curses_version());
308 ExitProgram(EXIT_SUCCESS);
309 case 'x': /* do not try to clear scrollback */
318 is_alias = (is_clear || is_reset || is_init);
319 need_tty = ((is_reset || is_init) ||
321 (!strcmp(argv[optind], "reset") ||
322 !strcmp(argv[optind], "init"))));
325 * Modify the argument list to omit the options we processed.
328 if (optind-- < argc) {
338 if (term == 0 || *term == '\0')
339 quit(ErrUsage, "No value for $TERM and no -T specified");
341 fd = save_tty_settings(&tty_settings, need_tty);
343 if (setupterm(term, fd, &errret) != OK && errret <= 0)
344 quit(ErrTermType, "unknown terminal \"%s\"", term);
347 if ((argc <= 0) && !is_alias)
349 ExitProgram(tput_cmd(fd, &tty_settings, opt_x, argc, argv));
352 while (fgets(buf, sizeof(buf), stdin) != 0) {
353 char *argvec[16]; /* command, 9 parms, null, & slop */
357 /* crack the argument list into a dope vector */
358 for (cp = buf; *cp; cp++) {
359 if (isspace(UChar(*cp))) {
361 } else if (cp == buf || cp[-1] == 0) {
362 argvec[argnum++] = cp;
363 if (argnum >= (int) SIZEOF(argvec) - 1)
370 && tput_cmd(fd, &tty_settings, opt_x, argnum, argvec) != 0) {
372 result = ErrSystem(0); /* will return value >4 */