396 lines
10 KiB
C
396 lines
10 KiB
C
/****************************************************************************
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* Copyright 2018-2019,2020 Thomas E. Dickey *
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* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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/*
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* tput.c -- shellscript access to terminal capabilities
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*
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* by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
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* Ross Ridge's mytinfo package.
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*/
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#include <tparm_type.h>
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#include <clear_cmd.h>
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#include <reset_cmd.h>
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#if !PURE_TERMINFO
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#include <dump_entry.h>
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#include <termsort.c>
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#endif
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#include <transform.h>
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#include <tty_settings.h>
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MODULE_ID("$Id: tput.c,v 1.84 2020/10/24 18:29:38 tom Exp $")
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#define PUTS(s) fputs(s, stdout)
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const char *_nc_progname = "tput";
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static char *prg_name;
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static bool is_init = FALSE;
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static bool is_reset = FALSE;
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static bool is_clear = FALSE;
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static void
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quit(int status, const char *fmt, ...)
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{
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va_list argp;
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va_start(argp, fmt);
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fprintf(stderr, "%s: ", prg_name);
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vfprintf(stderr, fmt, argp);
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fprintf(stderr, "\n");
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va_end(argp);
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ExitProgram(status);
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}
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static void
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usage(void)
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{
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#define KEEP(s) s "\n"
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static const char msg[] =
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{
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KEEP("")
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KEEP("Options:")
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KEEP(" -S << read commands from standard input")
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KEEP(" -T TERM use this instead of $TERM")
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KEEP(" -V print curses-version")
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KEEP(" -x do not try to clear scrollback")
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KEEP("")
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KEEP("Commands:")
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KEEP(" clear clear the screen")
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KEEP(" init initialize the terminal")
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KEEP(" reset reinitialize the terminal")
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KEEP(" capname unlike clear/init/reset, print value for capability \"capname\"")
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};
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#undef KEEP
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(void) fprintf(stderr, "Usage: %s [options] [command]\n", prg_name);
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fputs(msg, stderr);
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ExitProgram(ErrUsage);
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}
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static char *
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check_aliases(char *name, bool program)
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{
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static char my_init[] = "init";
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static char my_reset[] = "reset";
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static char my_clear[] = "clear";
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char *result = name;
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if ((is_init = same_program(name, program ? PROG_INIT : my_init)))
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result = my_init;
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if ((is_reset = same_program(name, program ? PROG_RESET : my_reset)))
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result = my_reset;
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if ((is_clear = same_program(name, program ? PROG_CLEAR : my_clear)))
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result = my_clear;
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return result;
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}
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static int
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exit_code(int token, int value)
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{
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int result = 99;
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switch (token) {
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case BOOLEAN:
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result = !value; /* TRUE=0, FALSE=1 */
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break;
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case NUMBER:
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result = 0; /* always zero */
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break;
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case STRING:
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result = value; /* 0=normal, 1=missing */
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break;
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}
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return result;
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}
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/*
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* Returns nonzero on error.
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*/
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static int
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tput_cmd(int fd, TTY * saved_settings, bool opt_x, int argc, char *argv[])
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{
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NCURSES_CONST char *name;
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char *s;
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int status;
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#if !PURE_TERMINFO
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bool termcap = FALSE;
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#endif
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name = check_aliases(argv[0], FALSE);
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if (is_reset || is_init) {
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TTY oldmode;
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int terasechar = -1; /* new erase character */
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int intrchar = -1; /* new interrupt character */
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int tkillchar = -1; /* new kill character */
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if (is_reset) {
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reset_start(stdout, TRUE, FALSE);
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reset_tty_settings(fd, saved_settings);
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} else {
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reset_start(stdout, FALSE, TRUE);
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}
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#if HAVE_SIZECHANGE
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set_window_size(fd, &lines, &columns);
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#else
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(void) fd;
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#endif
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set_control_chars(saved_settings, terasechar, intrchar, tkillchar);
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set_conversions(saved_settings);
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if (send_init_strings(fd, &oldmode)) {
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reset_flush();
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}
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update_tty_settings(&oldmode, saved_settings);
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return 0;
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}
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if (strcmp(name, "longname") == 0) {
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PUTS(longname());
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return 0;
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}
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#if !PURE_TERMINFO
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retry:
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#endif
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if (strcmp(name, "clear") == 0) {
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return (clear_cmd(opt_x) == ERR) ? ErrUsage : 0;
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} else if ((status = tigetflag(name)) != -1) {
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return exit_code(BOOLEAN, status);
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} else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
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(void) printf("%d\n", status);
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return exit_code(NUMBER, 0);
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} else if ((s = tigetstr(name)) == CANCELLED_STRING) {
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#if !PURE_TERMINFO
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if (!termcap) {
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const struct name_table_entry *np;
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termcap = TRUE;
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if ((np = _nc_find_entry(name, _nc_get_hash_table(termcap))) != 0) {
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switch (np->nte_type) {
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case BOOLEAN:
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name = boolnames[np->nte_index];
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break;
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case NUMBER:
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name = numnames[np->nte_index];
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break;
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case STRING:
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name = strnames[np->nte_index];
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break;
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}
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goto retry;
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}
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}
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#endif
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quit(ErrCapName, "unknown terminfo capability '%s'", name);
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} else if (VALID_STRING(s)) {
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if (argc > 1) {
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int k;
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int ignored;
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long numbers[1 + NUM_PARM];
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char *strings[1 + NUM_PARM];
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char *p_is_s[NUM_PARM];
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/* Nasty hack time. The tparm function needs to see numeric
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* parameters as numbers, not as pointers to their string
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* representations
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*/
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for (k = 1; (k < argc) && (k < NUM_PARM); k++) {
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char *tmp = 0;
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strings[k] = argv[k];
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numbers[k] = strtol(argv[k], &tmp, 0);
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if (tmp == 0 || *tmp != 0)
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numbers[k] = 0;
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}
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for (k = argc; k <= NUM_PARM; k++) {
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numbers[k] = 0;
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strings[k] = 0;
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}
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switch (tparm_type(name)) {
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case Num_Str:
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s = TPARM_2(s, numbers[1], strings[2]);
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break;
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case Num_Str_Str:
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s = TPARM_3(s, numbers[1], strings[2], strings[3]);
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break;
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case Numbers:
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#define myParam(n) numbers[n]
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s = TIPARM_9(s,
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myParam(1),
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myParam(2),
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myParam(3),
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myParam(4),
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myParam(5),
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myParam(6),
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myParam(7),
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myParam(8),
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myParam(9));
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#undef myParam
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break;
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case Other:
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/* FALLTHRU */
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default:
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(void) _nc_tparm_analyze(s, p_is_s, &ignored);
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#define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
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s = TPARM_9(s,
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myParam(1),
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myParam(2),
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myParam(3),
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myParam(4),
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myParam(5),
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myParam(6),
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myParam(7),
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myParam(8),
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myParam(9));
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#undef myParam
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break;
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}
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}
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/* use putp() in order to perform padding */
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putp(s);
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return exit_code(STRING, 0);
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}
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return exit_code(STRING, 1);
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}
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int
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main(int argc, char **argv)
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{
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char *term;
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int errret;
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bool cmdline = TRUE;
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int c;
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char buf[BUFSIZ];
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int result = 0;
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int fd;
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TTY tty_settings;
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bool opt_x = FALSE; /* clear scrollback if possible */
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bool is_alias;
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bool need_tty;
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prg_name = check_aliases(_nc_rootname(argv[0]), TRUE);
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term = getenv("TERM");
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while ((c = getopt(argc, argv, "ST:Vx")) != -1) {
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switch (c) {
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case 'S':
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cmdline = FALSE;
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break;
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case 'T':
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use_env(FALSE);
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use_tioctl(TRUE);
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term = optarg;
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break;
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case 'V':
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puts(curses_version());
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ExitProgram(EXIT_SUCCESS);
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case 'x': /* do not try to clear scrollback */
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opt_x = TRUE;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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}
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is_alias = (is_clear || is_reset || is_init);
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need_tty = ((is_reset || is_init) ||
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(optind < argc &&
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(!strcmp(argv[optind], "reset") ||
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!strcmp(argv[optind], "init"))));
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/*
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* Modify the argument list to omit the options we processed.
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*/
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if (is_alias) {
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if (optind-- < argc) {
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argc -= optind;
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argv += optind;
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}
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argv[0] = prg_name;
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} else {
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argc -= optind;
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argv += optind;
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}
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if (term == 0 || *term == '\0')
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quit(ErrUsage, "No value for $TERM and no -T specified");
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fd = save_tty_settings(&tty_settings, need_tty);
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if (setupterm(term, fd, &errret) != OK && errret <= 0)
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quit(ErrTermType, "unknown terminal \"%s\"", term);
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if (cmdline) {
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if ((argc <= 0) && !is_alias)
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usage();
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ExitProgram(tput_cmd(fd, &tty_settings, opt_x, argc, argv));
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}
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while (fgets(buf, sizeof(buf), stdin) != 0) {
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char *argvec[16]; /* command, 9 parms, null, & slop */
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int argnum = 0;
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char *cp;
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/* crack the argument list into a dope vector */
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for (cp = buf; *cp; cp++) {
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if (isspace(UChar(*cp))) {
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*cp = '\0';
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} else if (cp == buf || cp[-1] == 0) {
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argvec[argnum++] = cp;
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if (argnum >= (int) SIZEOF(argvec) - 1)
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break;
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}
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}
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argvec[argnum] = 0;
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if (argnum != 0
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&& tput_cmd(fd, &tty_settings, opt_x, argnum, argvec) != 0) {
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if (result == 0)
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result = ErrSystem(0); /* will return value >4 */
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++result;
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}
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}
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ExitProgram(result);
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}
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