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freebsd-skq/contrib/ncurses/progs/tset.c
Xin LI 73f0a83d68 MFV r262639: ncurses 5.9 20140222 snapshot. 
Requested by:	bapt
2014-03-02 08:58:21 +00:00

1371 lines
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/****************************************************************************
* Copyright (c) 1998-2012,2013 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996-on *
****************************************************************************/
/*
* Notes:
* The initial adaptation from 4.4BSD Lite sources in September 1995 used 686
* lines from that version, and made changes/additions for 150 lines. There
* was no reformatting, so with/without ignoring whitespace, the amount of
* change is the same.
*
* Comparing with current (2009) source, excluding this comment:
* a) 209 lines match identically to the 4.4BSD Lite sources, with 771 lines
* changed/added.
* a) Ignoring whitespace, the current version still uses 516 lines from the
* 4.4BSD Lite sources, with 402 lines changed/added.
*
* Raymond's original comment on this follows...
*/
/*
* tset.c - terminal initialization utility
*
* This code was mostly swiped from 4.4BSD tset, with some obsolescent
* cruft removed and substantial portions rewritten. A Regents of the
* University of California copyright applies to some portions of the
* code, and is reproduced below:
*/
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define USE_LIBTINFO
#define __INTERNAL_CAPS_VISIBLE /* we need to see has_hardware_tabs */
#include <progs.priv.h>
#include <errno.h>
#include <stdio.h>
#include <termcap.h>
#include <fcntl.h>
#if HAVE_GETTTYNAM && HAVE_TTYENT_H
#include <ttyent.h>
#endif
#ifdef NeXT
char *ttyname(int fd);
#endif
#if HAVE_SIZECHANGE
# if !defined(sun) || !TERMIOS
# if HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
# endif
# endif
#endif
#if NEED_PTEM_H
/* they neglected to define struct winsize in termios.h -- it's only
in termio.h */
#include <sys/stream.h>
#include <sys/ptem.h>
#endif
#include <dump_entry.h>
#include <transform.h>
MODULE_ID("$Id: tset.c,v 1.93 2013/12/15 01:05:56 tom Exp $")
/*
* SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
* Solaris, IRIX) define TIOCGWINSZ and struct winsize.
*/
#ifdef TIOCGSIZE
# define IOCTL_GET_WINSIZE TIOCGSIZE
# define IOCTL_SET_WINSIZE TIOCSSIZE
# define STRUCT_WINSIZE struct ttysize
# define WINSIZE_ROWS(n) n.ts_lines
# define WINSIZE_COLS(n) n.ts_cols
#else
# ifdef TIOCGWINSZ
# define IOCTL_GET_WINSIZE TIOCGWINSZ
# define IOCTL_SET_WINSIZE TIOCSWINSZ
# define STRUCT_WINSIZE struct winsize
# define WINSIZE_ROWS(n) n.ws_row
# define WINSIZE_COLS(n) n.ws_col
# endif
#endif
#ifndef environ
extern char **environ;
#endif
#undef CTRL
#define CTRL(x) ((x) & 0x1f)
static void failed(const char *) GCC_NORETURN;
static void exit_error(void) GCC_NORETURN;
static void err(const char *,...) GCC_NORETURN;
const char *_nc_progname = "tset";
static TTY mode, oldmode, original;
static bool opt_c; /* set control-chars */
static bool opt_w; /* set window-size */
static bool can_restore = FALSE;
static bool isreset = FALSE; /* invoked as reset */
static int terasechar = -1; /* new erase character */
static int intrchar = -1; /* new interrupt character */
static int tkillchar = -1; /* new kill character */
#if HAVE_SIZECHANGE
static int tlines, tcolumns; /* window size */
#endif
#define LOWERCASE(c) ((isalpha(UChar(c)) && isupper(UChar(c))) ? tolower(UChar(c)) : (c))
static int
CaselessCmp(const char *a, const char *b)
{ /* strcasecmp isn't portable */
while (*a && *b) {
int cmp = LOWERCASE(*a) - LOWERCASE(*b);
if (cmp != 0)
break;
a++, b++;
}
return LOWERCASE(*a) - LOWERCASE(*b);
}
static void
exit_error(void)
{
if (can_restore)
SET_TTY(STDERR_FILENO, &original);
(void) fprintf(stderr, "\n");
fflush(stderr);
ExitProgram(EXIT_FAILURE);
/* NOTREACHED */
}
static void
err(const char *fmt,...)
{
va_list ap;
va_start(ap, fmt);
(void) fprintf(stderr, "%s: ", _nc_progname);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
exit_error();
/* NOTREACHED */
}
static void
failed(const char *msg)
{
char temp[BUFSIZ];
size_t len = strlen(_nc_progname) + 2;
if ((int) len < (int) sizeof(temp) - 12) {
_nc_STRCPY(temp, _nc_progname, sizeof(temp));
_nc_STRCAT(temp, ": ", sizeof(temp));
} else {
_nc_STRCPY(temp, "tset: ", sizeof(temp));
}
perror(strncat(temp, msg, sizeof(temp) - strlen(temp) - 2));
exit_error();
/* NOTREACHED */
}
static void
cat(char *file)
{
FILE *fp;
size_t nr;
char buf[BUFSIZ];
if ((fp = fopen(file, "r")) == 0)
failed(file);
while ((nr = fread(buf, sizeof(char), sizeof(buf), fp)) != 0)
if (fwrite(buf, sizeof(char), nr, stderr) != nr)
failed("write to stderr");
fclose(fp);
}
static int
outc(int c)
{
return putc(c, stderr);
}
/* Prompt the user for a terminal type. */
static const char *
askuser(const char *dflt)
{
static char answer[256];
char *p;
/* We can get recalled; if so, don't continue uselessly. */
clearerr(stdin);
if (feof(stdin) || ferror(stdin)) {
(void) fprintf(stderr, "\n");
exit_error();
/* NOTREACHED */
}
for (;;) {
if (dflt)
(void) fprintf(stderr, "Terminal type? [%s] ", dflt);
else
(void) fprintf(stderr, "Terminal type? ");
(void) fflush(stderr);
if (fgets(answer, sizeof(answer), stdin) == 0) {
if (dflt == 0) {
exit_error();
/* NOTREACHED */
}
return (dflt);
}
if ((p = strchr(answer, '\n')) != 0)
*p = '\0';
if (answer[0])
return (answer);
if (dflt != 0)
return (dflt);
}
}
/**************************************************************************
*
* Mapping logic begins here
*
**************************************************************************/
/* Baud rate conditionals for mapping. */
#define GT 0x01
#define EQ 0x02
#define LT 0x04
#define NOT 0x08
#define GE (GT | EQ)
#define LE (LT | EQ)
typedef struct map {
struct map *next; /* Linked list of maps. */
const char *porttype; /* Port type, or "" for any. */
const char *type; /* Terminal type to select. */
int conditional; /* Baud rate conditionals bitmask. */
int speed; /* Baud rate to compare against. */
} MAP;
static MAP *cur, *maplist;
typedef struct speeds {
const char *string;
int speed;
} SPEEDS;
static const SPEEDS speeds[] =
{
{"0", B0},
{"50", B50},
{"75", B75},
{"110", B110},
{"134", B134},
{"134.5", B134},
{"150", B150},
{"200", B200},
{"300", B300},
{"600", B600},
{"1200", B1200},
{"1800", B1800},
{"2400", B2400},
{"4800", B4800},
{"9600", B9600},
/* sgttyb may define up to this point */
#ifdef B19200
{"19200", B19200},
#endif
#ifdef B38400
{"38400", B38400},
#endif
#ifdef B19200
{"19200", B19200},
#endif
#ifdef B38400
{"38400", B38400},
#endif
#ifdef B19200
{"19200", B19200},
#else
#ifdef EXTA
{"19200", EXTA},
#endif
#endif
#ifdef B38400
{"38400", B38400},
#else
#ifdef EXTB
{"38400", EXTB},
#endif
#endif
#ifdef B57600
{"57600", B57600},
#endif
#ifdef B115200
{"115200", B115200},
#endif
#ifdef B230400
{"230400", B230400},
#endif
#ifdef B460800
{"460800", B460800},
#endif
{(char *) 0, 0}
};
static int
tbaudrate(char *rate)
{
const SPEEDS *sp;
int found = FALSE;
/* The baudrate number can be preceded by a 'B', which is ignored. */
if (*rate == 'B')
++rate;
for (sp = speeds; sp->string; ++sp) {
if (!CaselessCmp(rate, sp->string)) {
found = TRUE;
break;
}
}
if (!found)
err("unknown baud rate %s", rate);
return (sp->speed);
}
/*
* Syntax for -m:
* [port-type][test baudrate]:terminal-type
* The baud rate tests are: >, <, @, =, !
*/
static void
add_mapping(const char *port, char *arg)
{
MAP *mapp;
char *copy, *p;
const char *termp;
char *base = 0;
copy = strdup(arg);
mapp = typeMalloc(MAP, 1);
if (copy == 0 || mapp == 0)
failed("malloc");
assert(copy != 0);
assert(mapp != 0);
mapp->next = 0;
if (maplist == 0)
cur = maplist = mapp;
else {
cur->next = mapp;
cur = mapp;
}
mapp->porttype = arg;
mapp->conditional = 0;
arg = strpbrk(arg, "><@=!:");
if (arg == 0) { /* [?]term */
mapp->type = mapp->porttype;
mapp->porttype = 0;
goto done;
}
if (arg == mapp->porttype) /* [><@=! baud]:term */
termp = mapp->porttype = 0;
else
termp = base = arg;
for (;; ++arg) { /* Optional conditionals. */
switch (*arg) {
case '<':
if (mapp->conditional & GT)
goto badmopt;
mapp->conditional |= LT;
break;
case '>':
if (mapp->conditional & LT)
goto badmopt;
mapp->conditional |= GT;
break;
case '@':
case '=': /* Not documented. */
mapp->conditional |= EQ;
break;
case '!':
mapp->conditional |= NOT;
break;
default:
goto next;
}
}
next:
if (*arg == ':') {
if (mapp->conditional)
goto badmopt;
++arg;
} else { /* Optional baudrate. */
arg = strchr(p = arg, ':');
if (arg == 0)
goto badmopt;
*arg++ = '\0';
mapp->speed = tbaudrate(p);
}
mapp->type = arg;
/* Terminate porttype, if specified. */
if (termp != 0)
*base = '\0';
/* If a NOT conditional, reverse the test. */
if (mapp->conditional & NOT)
mapp->conditional = ~mapp->conditional & (EQ | GT | LT);
/* If user specified a port with an option flag, set it. */
done:
if (port) {
if (mapp->porttype) {
badmopt:
err("illegal -m option format: %s", copy);
}
mapp->porttype = port;
}
free(copy);
#ifdef MAPDEBUG
(void) printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY");
(void) printf("type: %s\n", mapp->type);
(void) printf("conditional: ");
p = "";
if (mapp->conditional & GT) {
(void) printf("GT");
p = "/";
}
if (mapp->conditional & EQ) {
(void) printf("%sEQ", p);
p = "/";
}
if (mapp->conditional & LT)
(void) printf("%sLT", p);
(void) printf("\nspeed: %d\n", mapp->speed);
#endif
}
/*
* Return the type of terminal to use for a port of type 'type', as specified
* by the first applicable mapping in 'map'. If no mappings apply, return
* 'type'.
*/
static const char *
mapped(const char *type)
{
MAP *mapp;
int match;
for (mapp = maplist; mapp; mapp = mapp->next)
if (mapp->porttype == 0 || !strcmp(mapp->porttype, type)) {
switch (mapp->conditional) {
case 0: /* No test specified. */
match = TRUE;
break;
case EQ:
match = ((int) ospeed == mapp->speed);
break;
case GE:
match = ((int) ospeed >= mapp->speed);
break;
case GT:
match = ((int) ospeed > mapp->speed);
break;
case LE:
match = ((int) ospeed <= mapp->speed);
break;
case LT:
match = ((int) ospeed < mapp->speed);
break;
default:
match = FALSE;
}
if (match)
return (mapp->type);
}
/* No match found; return given type. */
return (type);
}
/**************************************************************************
*
* Entry fetching
*
**************************************************************************/
/*
* Figure out what kind of terminal we're dealing with, and then read in
* its termcap entry.
*/
static const char *
get_termcap_entry(char *userarg)
{
int errret;
char *p;
const char *ttype;
#if HAVE_GETTTYNAM
struct ttyent *t;
#else
FILE *fp;
#endif
char *ttypath;
if (userarg) {
ttype = userarg;
goto found;
}
/* Try the environment. */
if ((ttype = getenv("TERM")) != 0)
goto map;
if ((ttypath = ttyname(STDERR_FILENO)) != 0) {
p = _nc_basename(ttypath);
#if HAVE_GETTTYNAM
/*
* We have the 4.3BSD library call getttynam(3); that means
* there's an /etc/ttys to look up device-to-type mappings in.
* Try ttyname(3); check for dialup or other mapping.
*/
if ((t = getttynam(p))) {
ttype = t->ty_type;
goto map;
}
#else
if ((fp = fopen("/etc/ttytype", "r")) != 0
|| (fp = fopen("/etc/ttys", "r")) != 0) {
char buffer[BUFSIZ];
char *s, *t, *d;
while (fgets(buffer, sizeof(buffer) - 1, fp) != 0) {
for (s = buffer, t = d = 0; *s; s++) {
if (isspace(UChar(*s)))
*s = '\0';
else if (t == 0)
t = s;
else if (d == 0 && s != buffer && s[-1] == '\0')
d = s;
}
if (t != 0 && d != 0 && !strcmp(d, p)) {
ttype = strdup(t);
fclose(fp);
goto map;
}
}
fclose(fp);
}
#endif /* HAVE_GETTTYNAM */
}
/* If still undefined, use "unknown". */
ttype = "unknown";
map:ttype = mapped(ttype);
/*
* If not a path, remove TERMCAP from the environment so we get a
* real entry from /etc/termcap. This prevents us from being fooled
* by out of date stuff in the environment.
*/
found:
if ((p = getenv("TERMCAP")) != 0 && !_nc_is_abs_path(p)) {
/* 'unsetenv("TERMCAP")' is not portable.
* The 'environ' array is better.
*/
int n;
for (n = 0; environ[n] != 0; n++) {
if (!strncmp("TERMCAP=", environ[n], (size_t) 8)) {
while ((environ[n] = environ[n + 1]) != 0) {
n++;
}
break;
}
}
}
/*
* ttype now contains a pointer to the type of the terminal.
* If the first character is '?', ask the user.
*/
if (ttype[0] == '?') {
if (ttype[1] != '\0')
ttype = askuser(ttype + 1);
else
ttype = askuser(0);
}
/* Find the terminfo entry. If it doesn't exist, ask the user. */
while (setupterm((NCURSES_CONST char *) ttype, STDOUT_FILENO, &errret)
!= OK) {
if (errret == 0) {
(void) fprintf(stderr, "%s: unknown terminal type %s\n",
_nc_progname, ttype);
ttype = 0;
} else {
(void) fprintf(stderr,
"%s: can't initialize terminal type %s (error %d)\n",
_nc_progname, ttype, errret);
ttype = 0;
}
ttype = askuser(ttype);
}
#if BROKEN_LINKER
tgetflag("am"); /* force lib_termcap.o to be linked for 'ospeed' */
#endif
return (ttype);
}
/**************************************************************************
*
* Mode-setting logic
*
**************************************************************************/
/* some BSD systems have these built in, some systems are missing
* one or more definitions. The safest solution is to override unless the
* commonly-altered ones are defined.
*/
#if !(defined(CERASE) && defined(CINTR) && defined(CKILL) && defined(CQUIT))
#undef CEOF
#undef CERASE
#undef CINTR
#undef CKILL
#undef CLNEXT
#undef CRPRNT
#undef CQUIT
#undef CSTART
#undef CSTOP
#undef CSUSP
#endif
/* control-character defaults */
#ifndef CEOF
#define CEOF CTRL('D')
#endif
#ifndef CERASE
#define CERASE CTRL('H')
#endif
#ifndef CINTR
#define CINTR 127 /* ^? */
#endif
#ifndef CKILL
#define CKILL CTRL('U')
#endif
#ifndef CLNEXT
#define CLNEXT CTRL('v')
#endif
#ifndef CRPRNT
#define CRPRNT CTRL('r')
#endif
#ifndef CQUIT
#define CQUIT CTRL('\\')
#endif
#ifndef CSTART
#define CSTART CTRL('Q')
#endif
#ifndef CSTOP
#define CSTOP CTRL('S')
#endif
#ifndef CSUSP
#define CSUSP CTRL('Z')
#endif
#if defined(_POSIX_VDISABLE)
#define DISABLED(val) (((_POSIX_VDISABLE != -1) \
&& ((val) == _POSIX_VDISABLE)) \
|| ((val) <= 0))
#else
#define DISABLED(val) ((int)(val) <= 0)
#endif
#define CHK(val, dft) (DISABLED(val) ? dft : val)
static bool set_tabs(void);
/*
* Reset the terminal mode bits to a sensible state. Very useful after
* a child program dies in raw mode.
*/
static void
reset_mode(void)
{
#ifdef TERMIOS
tcgetattr(STDERR_FILENO, &mode);
#else
stty(STDERR_FILENO, &mode);
#endif
#ifdef TERMIOS
#if defined(VDISCARD) && defined(CDISCARD)
mode.c_cc[VDISCARD] = CHK(mode.c_cc[VDISCARD], CDISCARD);
#endif
mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CEOF);
mode.c_cc[VERASE] = CHK(mode.c_cc[VERASE], CERASE);
#if defined(VFLUSH) && defined(CFLUSH)
mode.c_cc[VFLUSH] = CHK(mode.c_cc[VFLUSH], CFLUSH);
#endif
mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CINTR);
mode.c_cc[VKILL] = CHK(mode.c_cc[VKILL], CKILL);
#if defined(VLNEXT) && defined(CLNEXT)
mode.c_cc[VLNEXT] = CHK(mode.c_cc[VLNEXT], CLNEXT);
#endif
mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CQUIT);
#if defined(VREPRINT) && defined(CRPRNT)
mode.c_cc[VREPRINT] = CHK(mode.c_cc[VREPRINT], CRPRNT);
#endif
#if defined(VSTART) && defined(CSTART)
mode.c_cc[VSTART] = CHK(mode.c_cc[VSTART], CSTART);
#endif
#if defined(VSTOP) && defined(CSTOP)
mode.c_cc[VSTOP] = CHK(mode.c_cc[VSTOP], CSTOP);
#endif
#if defined(VSUSP) && defined(CSUSP)
mode.c_cc[VSUSP] = CHK(mode.c_cc[VSUSP], CSUSP);
#endif
#if defined(VWERASE) && defined(CWERASE)
mode.c_cc[VWERASE] = CHK(mode.c_cc[VWERASE], CWERASE);
#endif
mode.c_iflag &= ~((unsigned) (IGNBRK | PARMRK | INPCK | ISTRIP | INLCR | IGNCR
#ifdef IUCLC
| IUCLC
#endif
#ifdef IXANY
| IXANY
#endif
| IXOFF));
mode.c_iflag |= (BRKINT | IGNPAR | ICRNL | IXON
#ifdef IMAXBEL
| IMAXBEL
#endif
);
mode.c_oflag &= ~((unsigned) (0
#ifdef OLCUC
| OLCUC
#endif
#ifdef OCRNL
| OCRNL
#endif
#ifdef ONOCR
| ONOCR
#endif
#ifdef ONLRET
| ONLRET
#endif
#ifdef OFILL
| OFILL
#endif
#ifdef OFDEL
| OFDEL
#endif
#ifdef NLDLY
| NLDLY
#endif
#ifdef CRDLY
| CRDLY
#endif
#ifdef TABDLY
| TABDLY
#endif
#ifdef BSDLY
| BSDLY
#endif
#ifdef VTDLY
| VTDLY
#endif
#ifdef FFDLY
| FFDLY
#endif
));
mode.c_oflag |= (OPOST
#ifdef ONLCR
| ONLCR
#endif
);
mode.c_cflag &= ~((unsigned) (CSIZE | CSTOPB | PARENB | PARODD | CLOCAL));
mode.c_cflag |= (CS8 | CREAD);
mode.c_lflag &= ~((unsigned) (ECHONL | NOFLSH
#ifdef TOSTOP
| TOSTOP
#endif
#ifdef ECHOPTR
| ECHOPRT
#endif
#ifdef XCASE
| XCASE
#endif
));
mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOE | ECHOK
#ifdef ECHOCTL
| ECHOCTL
#endif
#ifdef ECHOKE
| ECHOKE
#endif
);
#endif
SET_TTY(STDERR_FILENO, &mode);
}
/*
* Returns a "good" value for the erase character. This is loosely based on
* the BSD4.4 logic.
*/
#ifdef TERMIOS
static int
default_erase(void)
{
int result;
if (over_strike
&& key_backspace != 0
&& strlen(key_backspace) == 1)
result = key_backspace[0];
else
result = CERASE;
return result;
}
#endif
/*
* Update the values of the erase, interrupt, and kill characters in 'mode'.
*
* SVr4 tset (e.g., Solaris 2.5) only modifies the intr, quit or erase
* characters if they're unset, or if we specify them as options. This differs
* from BSD 4.4 tset, which always sets erase.
*/
static void
set_control_chars(void)
{
#ifdef TERMIOS
if (DISABLED(mode.c_cc[VERASE]) || terasechar >= 0) {
mode.c_cc[VERASE] = UChar((terasechar >= 0)
? terasechar
: default_erase());
}
if (DISABLED(mode.c_cc[VINTR]) || intrchar >= 0) {
mode.c_cc[VINTR] = UChar((intrchar >= 0)
? intrchar
: CINTR);
}
if (DISABLED(mode.c_cc[VKILL]) || tkillchar >= 0) {
mode.c_cc[VKILL] = UChar((tkillchar >= 0)
? tkillchar
: CKILL);
}
#endif
}
/*
* Set up various conversions in 'mode', including parity, tabs, returns,
* echo, and case, according to the termcap entry. If the program we're
* running was named with a leading upper-case character, map external
* uppercase to internal lowercase.
*/
static void
set_conversions(void)
{
#ifdef __OBSOLETE__
/*
* Conversion logic for some *really* ancient terminal glitches,
* not supported in terminfo. Left here for succeeding generations
* to marvel at.
*/
if (tgetflag("UC")) {
#ifdef IUCLC
mode.c_iflag |= IUCLC;
mode.c_oflag |= OLCUC;
#endif
} else if (tgetflag("LC")) {
#ifdef IUCLC
mode.c_iflag &= ~IUCLC;
mode.c_oflag &= ~OLCUC;
#endif
}
mode.c_iflag &= ~(PARMRK | INPCK);
mode.c_lflag |= ICANON;
if (tgetflag("EP")) {
mode.c_cflag |= PARENB;
mode.c_cflag &= ~PARODD;
}
if (tgetflag("OP")) {
mode.c_cflag |= PARENB;
mode.c_cflag |= PARODD;
}
#endif /* __OBSOLETE__ */
#ifdef TERMIOS
#ifdef ONLCR
mode.c_oflag |= ONLCR;
#endif
mode.c_iflag |= ICRNL;
mode.c_lflag |= ECHO;
#ifdef OXTABS
mode.c_oflag |= OXTABS;
#endif /* OXTABS */
/* test used to be tgetflag("NL") */
if (newline != (char *) 0 && newline[0] == '\n' && !newline[1]) {
/* Newline, not linefeed. */
#ifdef ONLCR
mode.c_oflag &= ~((unsigned) ONLCR);
#endif
mode.c_iflag &= ~((unsigned) ICRNL);
}
#ifdef __OBSOLETE__
if (tgetflag("HD")) /* Half duplex. */
mode.c_lflag &= ~ECHO;
#endif /* __OBSOLETE__ */
#ifdef OXTABS
/* test used to be tgetflag("pt") */
if (has_hardware_tabs) /* Print tabs. */
mode.c_oflag &= ~OXTABS;
#endif /* OXTABS */
mode.c_lflag |= (ECHOE | ECHOK);
#endif
}
/* Output startup string. */
static void
set_init(void)
{
char *p;
bool settle;
#ifdef __OBSOLETE__
if (pad_char != (char *) 0) /* Get/set pad character. */
PC = pad_char[0];
#endif /* OBSOLETE */
#ifdef TAB3
if (oldmode.c_oflag & (TAB3 | ONLCR | OCRNL | ONLRET)) {
oldmode.c_oflag &= (TAB3 | ONLCR | OCRNL | ONLRET);
SET_TTY(STDERR_FILENO, &oldmode);
}
#endif
settle = set_tabs();
if (isreset) {
if ((p = reset_1string) != 0) {
tputs(p, 0, outc);
settle = TRUE;
}
if ((p = reset_2string) != 0) {
tputs(p, 0, outc);
settle = TRUE;
}
/* What about rf, rs3, as per terminfo man page? */
/* also might be nice to send rmacs, rmul, rmm */
if ((p = reset_file) != 0
|| (p = init_file) != 0) {
cat(p);
settle = TRUE;
}
}
if (settle) {
(void) putc('\r', stderr);
(void) fflush(stderr);
(void) napms(1000); /* Settle the terminal. */
}
}
/*
* Set the hardware tabs on the terminal, using the ct (clear all tabs),
* st (set one tab) and ch (horizontal cursor addressing) capabilities.
* This is done before if and is, so they can patch in case we blow this.
* Return TRUE if we set any tab stops, FALSE if not.
*/
static bool
set_tabs(void)
{
if (set_tab && clear_all_tabs) {
int c;
int lim =
#if HAVE_SIZECHANGE
tcolumns
#else
columns
#endif
;
(void) putc('\r', stderr); /* Force to left margin. */
tputs(clear_all_tabs, 0, outc);
for (c = 8; c < lim; c += 8) {
/* Get to the right column. In BSD tset, this
* used to try a bunch of half-clever things
* with cup and hpa, for an average saving of
* somewhat less than two character times per
* tab stop, less than .01 sec at 2400cps. We
* lost all this cruft because it seemed to be
* introducing some odd bugs.
* -----------12345678----------- */
(void) fputs(" ", stderr);
tputs(set_tab, 0, outc);
}
putc('\r', stderr);
return (TRUE);
}
return (FALSE);
}
/**************************************************************************
*
* Main sequence
*
**************************************************************************/
/*
* Tell the user if a control key has been changed from the default value.
*/
#ifdef TERMIOS
static void
report(const char *name, int which, unsigned def)
{
unsigned older, newer;
char *p;
newer = mode.c_cc[which];
older = oldmode.c_cc[which];
if (older == newer && older == def)
return;
(void) fprintf(stderr, "%s %s ", name, older == newer ? "is" : "set to");
if (DISABLED(newer))
(void) fprintf(stderr, "undef.\n");
/*
* Check 'delete' before 'backspace', since the key_backspace value
* is ambiguous.
*/
else if (newer == 0177)
(void) fprintf(stderr, "delete.\n");
else if ((p = key_backspace) != 0
&& newer == (unsigned char) p[0]
&& p[1] == '\0')
(void) fprintf(stderr, "backspace.\n");
else if (newer < 040) {
newer ^= 0100;
(void) fprintf(stderr, "control-%c (^%c).\n", UChar(newer), UChar(newer));
} else
(void) fprintf(stderr, "%c.\n", UChar(newer));
}
#endif
/*
* Convert the obsolete argument forms into something that getopt can handle.
* This means that -e, -i and -k get default arguments supplied for them.
*/
static void
obsolete(char **argv)
{
for (; *argv; ++argv) {
char *parm = argv[0];
if (parm[0] == '-' && parm[1] == '\0') {
argv[0] = strdup("-q");
continue;
}
if ((parm[0] != '-')
|| (argv[1] && argv[1][0] != '-')
|| (parm[1] != 'e' && parm[1] != 'i' && parm[1] != 'k')
|| (parm[2] != '\0'))
continue;
switch (argv[0][1]) {
case 'e':
argv[0] = strdup("-e^H");
break;
case 'i':
argv[0] = strdup("-i^C");
break;
case 'k':
argv[0] = strdup("-k^U");
break;
}
}
}
static void
usage(void)
{
static const char *tbl[] =
{
""
,"Options:"
," -c set control characters"
," -e ch erase character"
," -I no initialization strings"
," -i ch interrupt character"
," -k ch kill character"
," -m mapping map identifier to type"
," -Q do not output control key settings"
," -r display term on stderr"
," -s output TERM set command"
," -V print curses-version"
," -w set window-size"
};
unsigned n;
(void) fprintf(stderr, "Usage: %s [options] [terminal]\n", _nc_progname);
for (n = 0; n < sizeof(tbl) / sizeof(tbl[0]); ++n)
fprintf(stderr, "%s\n", tbl[n]);
exit_error();
/* NOTREACHED */
}
static char
arg_to_char(void)
{
return (char) ((optarg[0] == '^' && optarg[1] != '\0')
? ((optarg[1] == '?') ? '\177' : CTRL(optarg[1]))
: optarg[0]);
}
int
main(int argc, char **argv)
{
int ch, noinit, noset, quiet, Sflag, sflag, showterm;
const char *p;
const char *ttype;
obsolete(argv);
noinit = noset = quiet = Sflag = sflag = showterm = 0;
while ((ch = getopt(argc, argv, "a:cd:e:Ii:k:m:np:qQSrsVw")) != -1) {
switch (ch) {
case 'c': /* set control-chars */
opt_c = TRUE;
break;
case 'a': /* OBSOLETE: map identifier to type */
add_mapping("arpanet", optarg);
break;
case 'd': /* OBSOLETE: map identifier to type */
add_mapping("dialup", optarg);
break;
case 'e': /* erase character */
terasechar = arg_to_char();
break;
case 'I': /* no initialization strings */
noinit = 1;
break;
case 'i': /* interrupt character */
intrchar = arg_to_char();
break;
case 'k': /* kill character */
tkillchar = arg_to_char();
break;
case 'm': /* map identifier to type */
add_mapping(0, optarg);
break;
case 'n': /* OBSOLETE: set new tty driver */
break;
case 'p': /* OBSOLETE: map identifier to type */
add_mapping("plugboard", optarg);
break;
case 'Q': /* don't output control key settings */
quiet = 1;
break;
case 'q': /* display term only */
noset = 1;
break;
case 'r': /* display term on stderr */
showterm = 1;
break;
case 'S': /* OBSOLETE: output TERM & TERMCAP */
Sflag = 1;
break;
case 's': /* output TERM set command */
sflag = 1;
break;
case 'V': /* print curses-version */
puts(curses_version());
ExitProgram(EXIT_SUCCESS);
case 'w': /* set window-size */
opt_w = TRUE;
break;
case '?':
default:
usage();
}
}
_nc_progname = _nc_rootname(*argv);
argc -= optind;
argv += optind;
if (argc > 1)
usage();
if (!opt_c && !opt_w)
opt_c = opt_w = TRUE;
if (GET_TTY(STDERR_FILENO, &mode) < 0)
failed("standard error");
can_restore = TRUE;
original = oldmode = mode;
#ifdef TERMIOS
ospeed = (NCURSES_OSPEED) cfgetospeed(&mode);
#else
ospeed = (NCURSES_OSPEED) mode.sg_ospeed;
#endif
if (same_program(_nc_progname, PROG_RESET)) {
isreset = TRUE;
reset_mode();
}
(void) get_termcap_entry(*argv);
if (!noset) {
#if HAVE_SIZECHANGE
tcolumns = columns;
tlines = lines;
if (opt_w) {
STRUCT_WINSIZE win;
/* Set window size if not set already */
(void) ioctl(STDERR_FILENO, IOCTL_GET_WINSIZE, &win);
if (WINSIZE_ROWS(win) == 0 &&
WINSIZE_COLS(win) == 0 &&
tlines > 0 && tcolumns > 0) {
WINSIZE_ROWS(win) = tlines;
WINSIZE_COLS(win) = tcolumns;
(void) ioctl(STDERR_FILENO, IOCTL_SET_WINSIZE, &win);
}
}
#endif
if (opt_c) {
set_control_chars();
set_conversions();
if (!noinit)
set_init();
/* Set the modes if they've changed. */
if (memcmp(&mode, &oldmode, sizeof(mode))) {
SET_TTY(STDERR_FILENO, &mode);
}
}
}
/* Get the terminal name from the entry. */
ttype = _nc_first_name(cur_term->type.term_names);
if (noset)
(void) printf("%s\n", ttype);
else {
if (showterm)
(void) fprintf(stderr, "Terminal type is %s.\n", ttype);
/*
* If erase, kill and interrupt characters could have been
* modified and not -Q, display the changes.
*/
#ifdef TERMIOS
if (!quiet) {
report("Erase", VERASE, CERASE);
report("Kill", VKILL, CKILL);
report("Interrupt", VINTR, CINTR);
}
#endif
}
if (Sflag)
err("The -S option is not supported under terminfo.");
if (sflag) {
int len;
char *var;
char *leaf;
/*
* Figure out what shell we're using. A hack, we look for an
* environmental variable SHELL ending in "csh".
*/
if ((var = getenv("SHELL")) != 0
&& ((len = (int) strlen(leaf = _nc_basename(var))) >= 3)
&& !strcmp(leaf + len - 3, "csh"))
p = "set noglob;\nsetenv TERM %s;\nunset noglob;\n";
else
p = "TERM=%s;\n";
(void) printf(p, ttype);
}
ExitProgram(EXIT_SUCCESS);
}
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