#pragma prototyped
static const char usage[] =
"[-?@(#)$Id: stty (AT&T Research) 2010-04-01 $\n]"
USAGE_LICENSE
"[+NAME?stty - set or get terminal modes]"
"[+DESCRIPTION?\bstty\b sets certain terminal I/O modes for the device "
"that is the current standard input; without arguments, it writes the "
"settings of certain modes to standard output.]"
"[a:all?Writes to standard output all of the mode settings.]"
"[f|F:fd|file?Use \afd\a as the terminal fd.]#[fd:=0]"
"[g:save?Writes the current settings to standard output in a form that "
"can be used as an argument to another \bstty\b command. The \brows\b "
"and \bcolumns\b values are not included.]"
"[t:terminal-group?Print the terminal group id of the device, -1 if "
"unknown.]"
"\n"
"\n[mode ...]\n"
"\n"
"[+EXTENDED DESCRIPTION?Modes are specified either as a single name or "
"as a name followed by a value. As indicated below, many of the mode "
"names can be preceded by a \b-\b to negate its meaning. Modes are "
"listed by group corresponding to field in the \btermios\b structure "
"defined in \b<termios.h>\b. Modes in the last group are implemented "
"using options in the previous groups. Note that many combinations of "
"modes make no sense, but no sanity checking is performed. The modes are "
"selected from the following:]"
"{\fabc\f}"
"[+EXIT STATUS?]"
"{"
"[+0?All modes reported or set successfully.]"
"[+>0?Standard input not a terminaol or one or more modes "
"failed.]"
"}"
"[+SEE ALSO?\btegetattr\b(2), \btcsetattr\b(2), \bioctl\b(2)]"
;
#include <cmd.h>
#include <ccode.h>
#include <ctype.h>
#include <ast_tty.h>
#if _sys_ioctl
#include <sys/ioctl.h>
#endif
#define C(x) ERROR_catalog(x)
#ifndef _POSIX_VDISABLE
# define _POSIX_VDISABLE 0
#endif
#ifndef NCCS
# ifdef NCC
# define NCCS NCC
# else
# define NCCS elementsof(((struct termio*)0)->c_cc)
# endif
#endif
#define A_FLAG 1
#define G_FLAG 2
#define T_FLAG 4
#define C_FLAG 1
#define C_LINE 2
#define C_SPEED 3
#define I_FLAG 4
#define O_FLAG 5
#define L_FLAG 6
#define T_CHAR 7
#define W_SIZE 8
#define BIT 1
#define BITS 2
#define NUM 3
#define CHAR 4
#define SPEED 5
#define SIZE 6
#define MIXED 7
#define SANE 8
#define COOKED 9
#define CASE 10
#define TABS 11
#define WIND 12
#undef SS
#define IG 0x0001
#define NL 0x0002
#define SS 0x0004
#define US 0x0010
typedef struct tty_s
{
const char name[8];
unsigned char type;
unsigned char field;
short flags;
unsigned long mask;
unsigned long val;
const char description[76];
} Tty_t;
static const Tty_t Ttable[] =
{
#ifdef CBAUD
{ "ispeed", NUM, C_SPEED,0, CBAUD, 0, C("\an\a is the input baud rate") },
{ "ospeed", NUM, C_SPEED,0, CBAUD, 0, C("\an\a is the output baud rate") },
{ "speed", NUM, C_SPEED,IG, CBAUD },
#endif
{ "0", SPEED, C_FLAG, 0, B0 },
{ "50", SPEED, C_FLAG, 0, B50 },
{ "75", SPEED, C_FLAG, 0, B75 },
{ "110", SPEED, C_FLAG, 0, B110 },
{ "134", SPEED, C_FLAG, 0, B134 },
{ "150", SPEED, C_FLAG, 0, B150 },
{ "200", SPEED, C_FLAG, 0, B200 },
{ "300", SPEED, C_FLAG, 0, B300 },
{ "600", SPEED, C_FLAG, 0, B600 },
{ "1200", SPEED, C_FLAG, 0, B1200 },
{ "1800", SPEED, C_FLAG, 0, B1800 },
{ "2400", SPEED, C_FLAG, 0, B2400 },
{ "4800", SPEED, C_FLAG, 0, B4800 },
{ "9600", SPEED, C_FLAG, 0, B9600 },
{ "19200", SPEED, C_FLAG, 0, B19200 },
{ "38400", SPEED, C_FLAG, 0, B38400 },
#ifdef TIOCSWINSZ
{ "rows", WIND, W_SIZE, IG, 0, 24, C("\an\a is the number of lines for display") },
{ "cols", WIND, W_SIZE, IG, 1, 80, C("\an\a is the number of columns for display") },
{ "columns", WIND, W_SIZE, IG, 1, 80, C("Same as \bcols\b") },
#endif
{ "intr", CHAR, T_CHAR, SS, VINTR, 'C', C("Send an interrupt signal") },
{ "quit", CHAR, T_CHAR, SS, VQUIT, '|', C("Send a quit signal") },
{ "erase", CHAR, T_CHAR, SS, VERASE, 'H', C("Erase the last character entered") },
{ "kill", CHAR, T_CHAR, NL|SS, VKILL, 'U', C("Erase the current line") },
{ "eof", CHAR, T_CHAR, SS, VEOF, 'D', C("Send an end of file") },
#ifdef VEOL2
{ "eol2", CHAR, T_CHAR, US, VEOL2, _POSIX_VDISABLE, C("Alternate character to end the line") },
#endif
#ifdef VSWTCH
{ "swtch", CHAR, T_CHAR, US, VSWTCH, _POSIX_VDISABLE, C("Switch to a different shell layer") },
#endif
{ "eol", CHAR, T_CHAR, NL|US, VEOL, _POSIX_VDISABLE, C("End the line") },
#ifdef VSTART
{ "start", CHAR, T_CHAR, SS, VSTART, 'Q', C("Restart the output after stopping it") },
#endif
#ifdef VSTOP
{ "stop", CHAR, T_CHAR, SS, VSTOP, 'S', C("Stop the output") },
#endif
#ifdef VDSUSP
{ "dsusp", CHAR, T_CHAR, SS, VDSUSP, 'Y', C("Send a terminal stop signal after flushing the input") },
#endif
#ifdef VSUSP
{ "susp", CHAR, T_CHAR, NL|SS, VSUSP, 'Z', C("Send a terminal stop signal") },
#endif
#ifdef VREPRINT
{ "rprnt", CHAR, T_CHAR, SS, VREPRINT, 'R', C("Redraw the current line") },
#endif
#ifdef VDISCARD
{ "flush", CHAR, T_CHAR, SS, VDISCARD, 'O', C("Discard output") },
#endif
#ifdef VWERASE
{ "werase", CHAR, T_CHAR, SS, VWERASE, 'W', C("Erase the last word entered") },
#endif
#ifdef VLNEXT
{ "lnext", CHAR, T_CHAR, NL|SS, VLNEXT, 'V', C("Enter the next input character literally") },
#endif
#if _mem_c_line_termios
{ "line", NUM, C_LINE, 0, 0, 0, C("Line discipline number") },
#endif
{ "min", NUM, T_CHAR, 0, VMIN, 0, C("Mininmum number of characters to read in raw mode") },
{ "time", NUM, T_CHAR, 0, VTIME, 0, C("Number of .1 second intervals with raw mode") },
{ "parenb", BIT, C_FLAG, 0, PARENB, PARENB, C("Enable (disable) parity generation and detection") },
{ "parodd", BIT, C_FLAG, 0, PARODD, PARODD, C("Use odd (even) parity") },
#ifdef PAREXT
{ "parext", BIT, C_FLAG, 0, PAREXT, PAREXT },
#endif
#ifdef CREAD
{ "cread", BIT, C_FLAG, SS, CREAD, CREAD, C("Enable (disable) input") },
#endif
{ "cs5", SIZE, C_FLAG, 0, CSIZE, CS5 , C("Char size 5") },
{ "cs6", SIZE, C_FLAG, 0, CSIZE, CS6 , C("Char size 6") },
{ "cs7", SIZE, C_FLAG, 0, CSIZE, CS7 , C("Char size 7") },
{ "cs8", SIZE, C_FLAG, 0, CSIZE, CS8 , C("Char size 8") },
{ "hupcl", BIT, C_FLAG, 0, HUPCL, HUPCL, C("Hangup (do not hangup) connection on last close") },
{ "hup", BIT, C_FLAG, IG, HUPCL, HUPCL, C("Same as \bhupcl\b") },
{ "cstopb", BIT, C_FLAG, 0, CSTOPB, CSTOPB, C("Use two (one) stop bits") },
#ifdef CRTSCTS
{ "crtscts", BIT, C_FLAG, 0, CRTSCTS, CRTSCTS, C("Enable (disable) RTS/CTS handshaking") },
#endif
{ "clocal", BIT, C_FLAG, NL, CLOCAL, CLOCAL, C("Disable (enable) modem control signals") },
{ "ignbrk", BIT, I_FLAG, US, IGNBRK, IGNBRK, C("Ignore (do not ignore) break characters") },
{ "brkint", BIT, I_FLAG, SS, BRKINT, BRKINT, C("Generate (do not generate) INTR signal on break") },
{ "ignpar", BIT, I_FLAG, 0, IGNPAR, IGNPAR, C("Ignore (do not ignore) characters with parity errors") },
{ "parmrk", BIT, I_FLAG, 0, PARMRK, PARMRK, C("Mark (do not mark) parity errors") },
{ "inpck", BIT, I_FLAG, 0, INPCK, INPCK, C("Enable (disable) input parity checking") },
{ "istrip", BIT, I_FLAG, 0, ISTRIP, ISTRIP, C("Clear (do not clear) high bit of input characters") },
{ "inlcr", BIT, I_FLAG, US, INLCR, INLCR, C("Translate (do not translate) carriage return to newline") },
{ "igncr", BIT, I_FLAG, US, IGNCR, IGNCR, C("Ignore (do not ignore) carriage return") },
#ifdef IUCLC
{ "iuclc", BIT, I_FLAG, US, IUCLC, IUCLC, C("Map (do not map) upper-case to lower case") },
#endif
{ "ixon", BIT, I_FLAG, 0, IXON, IXON, C("Enable (disable) XON/XOFF flow control. \bstop\b character stops output") },
#ifdef IXANY
{ "ixany", BIT, I_FLAG, US, IXANY, IXANY, C("Any character (only start character) can restart output.") },
{ "decctlq", BIT, I_FLAG, IG, IXANY, 0, C("Same as \b-ixany\b") },
#endif
{ "ixoff", BIT, I_FLAG, US, IXOFF, IXOFF, C("Disable (enable) XON/XOFF flow control") },
#ifdef IMAXBEL
{ "imaxbel", BIT, I_FLAG, SS, IMAXBEL, IMAXBEL, C("Beep (do not beep) if a character arrives with full input buffer") },
#endif
{ "icrnl", BIT, I_FLAG, NL|SS, ICRNL, ICRNL, C("Translate (do not translate) carriage return to newline") },
{ "isig", BIT, L_FLAG, SS, ISIG, ISIG, C("Enable (disable) \bintr\b, \bquit\b, and \bsusp\b special characters") },
{ "icanon", BIT, L_FLAG, SS, ICANON, ICANON, C("Enable (disable) \berase\b, \bkill\b, \bwerase\b, and \brprnt\b special characters") },
{ "icannon", BIT, L_FLAG, SS, ICANON, ICANON },
#ifdef IEXTEN
{ "iexten", BIT, L_FLAG, SS, IEXTEN, IEXTEN, C("Enable (disable) non-POSIX special characters") },
#endif
{ "echo", BIT, L_FLAG, SS, ECHO|ECHONL, ECHO|ECHONL, C("Echo (do not echo) input characters") },
{ "echoe", BIT, L_FLAG, SS, ECHOE, ECHOE, C("Echo (do not echo) erase characters as backspace-space-backspace") },
{ "echok", BIT, L_FLAG, SS, ECHOK, ECHOK, C("Echo (do not echo) a newline after a kill character") },
#ifdef ECHOKE
{ "echoke", BIT, L_FLAG, SS, ECHOKE, ECHOKE, C("Echo (do not echo) a newline after a kill character") },
#endif
{ "lfkc", BIT, L_FLAG, IG, ECHOK, ECHOK, C("Same as \bechok\b (\b-echok\b); obsolete") },
{ "echonl", BIT, L_FLAG, SS, ECHONL, ECHONL,"Echo (do not echo) newline even if not echoing other character" },
#ifdef ECHOCTL
{ "echoctl", BIT, L_FLAG, SS, ECHOCTL, ECHOCTL, C("Echo (do not echo) control characters as \b^\b\ac\a") },
#else
#define ECHOCTL 0
#endif
#ifdef ECHOPRT
{ "echoprt", BIT, L_FLAG, US, ECHOPRT, ECHOPRT, C("Echo (do not echo) erased characters backward, between '\\' and '/'") },
#else
#define ECHOPRT 0
#endif
#ifdef XCASE
{ "xcase", BIT, L_FLAG, US, XCASE, XCASE, C("Enable (disable) \bicanon\b uppercase as lowercase with '\\' prefix") },
#endif
#ifdef DEFECHO
{ "defecho", BIT, L_FLAG, 0, DEFECHO, DEFECHO },
#endif
#ifdef FLUSHO
{ "flusho", BIT, L_FLAG, 0, FLUSHO, FLUSHO, C("Discard (do not discard) written data. Cleared by subsequent input") },
#endif
#ifdef PENDIN
{ "pendin", BIT, L_FLAG, 0, PENDIN, PENDIN, C("Redisplay pending input at next read and then automatically clear \bpendin\b") },
#endif
{ "noflsh", BIT, L_FLAG, US, NOFLSH, NOFLSH, C("Disable (enable) flushing after \bintr\b and \bquit\b special characters") },
#ifdef TOSTOP
{ "tostop", BIT, L_FLAG, NL|US, TOSTOP, TOSTOP, C("Stop (do not stop) background jobs that try to write to the terminal") },
#endif
#ifdef OLCUC
{ "olcuc", BIT, O_FLAG, US, OLCUC, OLCUC, C("Translate (do not translate) lowercase characters to uppercase") },
#endif
#ifdef ONLCR
{ "onlcr", BIT, O_FLAG, SS, ONLCR, ONLCR, C("Translate (do not translate) newline to carriage return-newline") },
#endif
#ifdef ONLRET
{ "onlret", BIT, O_FLAG, US, ONLRET, ONLRET, C("Newline performs (does not perform) a carriage return") },
#endif
#ifdef OCRNL
{ "ocrnl", BIT, O_FLAG, US, OCRNL, OCRNL, C("Translate (do not translate) carriage return to newline") },
#endif
#ifdef ONOCR
{ "onocr", BIT, O_FLAG, US, ONOCR, ONOCR, C("Do not (do) print carriage returns in the first column") },
#endif
#ifdef OFILL
{ "ofill", BIT, O_FLAG, US, OFILL, OFILL, C("Use fill characters (use timing) for delays") },
#endif
#ifdef OFDEL
{ "ofdel", BIT, O_FLAG, US, OFDEL, OFDEL, C("Use DEL (NUL) as fill characters for delays") },
#endif
{ "opost", BIT, O_FLAG, SS, OPOST, OPOST, C(" Postprocess (do not postprocess) output") },
#ifdef CRDLY
{ "cr0", BITS, O_FLAG, IG|SS, CRDLY, CR0 },
{ "cr1", BITS, O_FLAG, US, CRDLY, CR1 },
{ "cr2", BITS, O_FLAG, US, CRDLY, CR2 },
{ "cr3", BITS, O_FLAG, US, CRDLY, CR3 },
#endif
#ifdef NLDLY
{ "nl0", BITS, O_FLAG, IG|US, NLDLY, NL0 },
{ "nl1", BITS, O_FLAG, US, NLDLY, NL1 },
#endif
#ifdef TABDLY
{ "tabs", TABS, O_FLAG, IG, TABDLY, TAB3, C("Preserve (expand to spaces) tabs") },
#ifdef TAB0
{ "tab0", BITS, O_FLAG, IG|SS, TABDLY, TAB0 },
#endif
#ifdef TAB1
{ "tab1", BITS, O_FLAG, US, TABDLY, TAB1 },
#endif
#ifdef TAB2
{ "tab2", BITS, O_FLAG, US, TABDLY, TAB2 },
#endif
{ "tab3", BITS, O_FLAG, US, TABDLY, TAB3 },
#endif
#ifdef BSDLY
{ "bs0", BITS, O_FLAG, IG|SS, BSDLY, BS0 },
{ "bs1", BITS, O_FLAG, US, BSDLY, BS1 },
#endif
#ifdef VTDLY
{ "vt0", BITS, O_FLAG, IG|SS, VTDLY, VT0 },
{ "vt1", BITS, O_FLAG, US, VTDLY, VT1 },
#endif
#ifdef FFDLY
{ "ff0", BITS, O_FLAG, IG|SS, FFDLY, FF0 },
{ "ff1", BITS, O_FLAG, US, FFDLY, FF1 },
#endif
{ "", MIXED, O_FLAG, NL|IG },
{ "evenp", MIXED, C_FLAG, IG, PARENB, 0, C("Same as \bparenb -parodd cs7\b") },
{ "oddp", MIXED, C_FLAG, IG, PARODD, 0, C("Same as \bparenb parodd cs7\b") },
{ "parity", MIXED, C_FLAG, IG, 0, 0, C("Same as parenb \b-parodd cs7\b") },
{ "ek", MIXED, C_FLAG, IG, 0, 0, C("Reset the \berase\b and \bkill\b special characters to their default values") },
{ "sane", SANE, C_FLAG, IG, 0, 0, C("Reset all modes to some reasonable values") },
{ "cooked", COOKED, C_FLAG, IG, 0, 0, C("Disable raw input and output") },
{ "raw", COOKED, C_FLAG, IG, 0, 0, C("Enable raw input and output") },
{ "lcase", CASE, C_FLAG, IG, 0 , 0, C("Set \bxcase\b, \biuclc\b, and \bolcuc\b") },
{ "LCASE", CASE, C_FLAG, IG, 0 , 0, C("Same as \blcase\b") }
};
#if CC_NATIVE == CC_ASCII
#define cntl(x) (((x)=='?')?0177:((x)&037))
#else
#define cntl(x) (((x)=='?')?ccmapc(0177,CC_ASCII,CC_NATIVE):ccmapc(ccmapc(x,CC_NATIVE,CC_ASCII)&037,CC_ASCII,CC_NATIVE))
#endif
static void sane(register struct termios *sp)
{
register const Tty_t* tp;
for (tp = Ttable; tp < &Ttable[elementsof(Ttable)]; tp++)
if (tp->flags & (SS|US))
switch (tp->type)
{
case BIT:
case BITS:
switch (tp->field)
{
case C_FLAG:
if (tp->flags & SS)
sp->c_cflag |= tp->mask;
else
sp->c_cflag &= ~tp->mask;
break;
case I_FLAG:
if (tp->flags & SS)
sp->c_iflag |= tp->mask;
else
sp->c_iflag &= ~tp->mask;
break;
case O_FLAG:
if (tp->flags & SS)
sp->c_oflag |= tp->mask;
else
sp->c_oflag &= ~tp->mask;
break;
case L_FLAG:
if (tp->flags & SS)
sp->c_lflag |= tp->mask;
else
sp->c_lflag &= ~tp->mask;
break;
}
break;
case CHAR:
sp->c_cc[tp->mask] = cntl(tp->val);
break;
}
}
static int gin(char *arg,struct termios *sp)
{
register int i;
if(*arg++ != ':')
return(0);
sp->c_iflag = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
sp->c_oflag = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
sp->c_cflag = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
sp->c_lflag = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
for(i=0;i< NCCS; i++)
{
sp->c_cc[i] = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
}
#if _mem_c_line_termios
sp->c_line =
#endif
strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
i = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
cfsetispeed(sp, i);
i = strtol(arg,&arg,16);
if(*arg++ != ':')
return(0);
cfsetospeed(sp, i);
if(*arg)
return(0);
return(1);
}
static void gout(struct termios *sp)
{
register int i;
sfprintf(sfstdout,":%x",sp->c_iflag);
sfprintf(sfstdout,":%x",sp->c_oflag);
sfprintf(sfstdout,":%x",sp->c_cflag);
sfprintf(sfstdout,":%x",sp->c_lflag);
for(i=0;i< NCCS; i++)
sfprintf(sfstdout,":%x",sp->c_cc[i]);
#if _mem_c_line_termios
sfprintf(sfstdout,":%x", sp->c_line);
#else
sfprintf(sfstdout,":%x", 0);
#endif
sfprintf(sfstdout,":%x",cfgetispeed(sp));
sfprintf(sfstdout,":%x",cfgetospeed(sp));
sfprintf(sfstdout,":\n");
}
static void output(struct termios *sp, int flags)
{
const Tty_t *tp;
struct termios tty;
register int delim = ' ';
register int i,off,off2;
char schar[2];
unsigned int ispeed = cfgetispeed(sp);
unsigned int ospeed = cfgetospeed(sp);
if(flags&G_FLAG)
{
gout(sp);
return;
}
tty = *sp;
sane(&tty);
for(i=0; i < elementsof(Ttable); i++)
{
tp= &Ttable[i];
if(tp->flags&IG)
{
if(tp->flags&NL)
sfputc(sfstdout,'\n');
continue;
}
switch(tp->type)
{
case BIT:
case BITS:
off = off2 = 1;
switch(tp->field)
{
case C_FLAG:
if(sp->c_cflag&tp->mask)
off = 0;
if(tty.c_cflag&tp->mask)
off2 = 0;
break;
case I_FLAG:
if(sp->c_iflag&tp->mask)
off = 0;
if(tty.c_iflag&tp->mask)
off2 = 0;
break;
case O_FLAG:
if((sp->c_oflag&tp->mask)==tp->val)
off = 0;
if(tty.c_oflag&tp->mask)
off2 = 0;
break;
case L_FLAG:
if(sp->c_lflag&tp->mask)
off = 0;
if(tty.c_lflag&tp->mask)
off2 = 0;
}
if(tp->flags&NL)
delim = '\n';
if(!flags && off==off2)
continue;
if(!off)
sfprintf(sfstdout,"%s%c",tp->name,delim);
else if(tp->type==BIT)
sfprintf(sfstdout,"-%s%c",tp->name,delim);
delim = ' ';
break;
case CHAR:
off = sp->c_cc[tp->mask];
if(tp->flags&NL)
delim = '\n';
if(!flags && off==(unsigned char)tty.c_cc[tp->mask])
continue;
if(off==_POSIX_VDISABLE)
sfprintf(sfstdout,"%s = <undef>;%c",tp->name,delim);
else if(isprint(off&0xff))
sfprintf(sfstdout,"%s = %c;%c",tp->name,off,delim);
else
#if CC_NATIVE == CC_ASCII
sfprintf(sfstdout,"%s = ^%c;%c",tp->name,off==0177?'?':(off^0100),delim);
#else
{
off = ccmapc(off, CC_NATIVE, CC_ASCII);
sfprintf(sfstdout,"%s = ^%c;%c",tp->name,off==0177?'?':ccmapc(off^0100,CC_ASCII,CC_NATIVE),delim);
}
#endif
delim = ' ';
break;
case SIZE:
if((sp->c_cflag&CSIZE)!=tp->mask)
continue;
if(flags || (sp->c_cflag&CSIZE) != (tty.c_cflag&CSIZE))
sfprintf(sfstdout,"%s ",tp->name);
break;
case SPEED:
if(tp->mask==ispeed)
{
if(ispeed!=ospeed)
schar[0]='i';
else
schar[0]=0;
}
else if(tp->mask==ospeed)
schar[0]='o';
else
continue;
schar[1] = 0;
#ifdef TIOCSWINSZ
{
struct winsize win;
off = ioctl(0,TIOCGWINSZ,&win);
if(off>=0)
sfprintf(sfstdout,"%sspeed %s baud; rows %d; columns %d;\n",schar,tp->name,win.ws_row,win.ws_col);
}
if(off<0)
#endif
sfprintf(sfstdout,"%sspeed %s baud;\n",schar,tp->name);
}
}
if(delim=='\n')
sfputc(sfstdout,'\n');
}
static const Tty_t *lookup(const char *name)
{
register int i;
for(i=0; i < elementsof(Ttable); i++)
{
if(strcmp(Ttable[i].name,name)==0)
return(&Ttable[i]);
}
return(0);
}
static const Tty_t *getspeed(unsigned long val)
{
register int i;
for(i=0; i < elementsof(Ttable); i++)
{
if(Ttable[i].type==SPEED && Ttable[i].mask==val)
return(&Ttable[i]);
}
return(0);
}
static int gettchar(register const char *cp)
{
if(*cp==0)
return(-1);
if(cp[1]==0)
return((unsigned)cp[0]);
if(*cp=='^' && cp[1] && cp[2]==0)
{
switch(cp[1])
{
case '-':
return(-1);
default:
return(cntl(cp[1]));
}
}
if(streq(cp,"undef") || streq(cp,"<undef>"))
return(-1);
return(*((unsigned char*)cp));
}
static void set(char *argv[], struct termios *sp)
{
const Tty_t *tp;
register int c,off;
char *cp;
char *ep;
while(cp = *argv++)
{
off = 0;
if(*cp=='-')
{
cp++;
off=1;
}
if(!(tp=lookup(cp)) || (off && (tp->type!=BIT) && (tp->type!=TABS)))
error(ERROR_exit(1),"%s: unknown mode",cp);
switch(tp->type)
{
case CHAR:
if(off)
error(ERROR_exit(1),"%s: unknown mode",cp);
if(!*argv)
error(ERROR_exit(1),"missing argument to %s",cp);
c = gettchar(*argv++);
if(c>=0)
sp->c_cc[tp->mask] = c;
else
sp->c_cc[tp->mask] = _POSIX_VDISABLE;
break;
case BIT: case BITS:
switch(tp->field)
{
case C_FLAG:
if(off)
sp->c_cflag &= ~tp->mask;
else
sp->c_cflag |= tp->mask;
break;
case I_FLAG:
if(off)
sp->c_iflag &= ~tp->mask;
else
sp->c_iflag |= tp->mask;
break;
case O_FLAG:
sp->c_oflag &= ~tp->mask;
sp->c_oflag |= tp->val;
break;
case L_FLAG:
if(off)
sp->c_lflag &= ~tp->mask;
else
sp->c_lflag |= tp->mask;
break;
}
break;
case TABS:
sp->c_oflag &= ~tp->mask;
if(off)
sp->c_oflag |= tp->val;
break;
#ifdef TIOCSWINSZ
case WIND:
{
struct winsize win;
int n;
if(ioctl(0,TIOCGWINSZ,&win)<0)
error(ERROR_system(1),"cannot set %s",tp->name);
if(!(cp= *argv))
{
sfprintf(sfstdout,"%d\n",tp->mask?win.ws_col:win.ws_row);
break;
}
argv++;
n=strtol(cp,&cp,10);
if(*cp)
error(ERROR_system(1),"%d: invalid number of %s",argv[-1],tp->name);
if(tp->mask)
win.ws_col = n;
else
win.ws_row = n;
if(ioctl(0,TIOCSWINSZ,&win)<0)
error(ERROR_system(1),"cannot set %s",tp->name);
break;
}
#endif
case NUM:
cp = *argv;
if (!cp)
{
if (tp->field == C_SPEED)
{
if (tp = getspeed(*tp->name == 'i' ? cfgetispeed(sp) : cfgetospeed(sp)))
sfprintf(sfstdout, "%s\n", tp->name);
break;
}
error(ERROR_exit(1), "%s: missing numeric argument", tp->name);
}
argv++;
c = (int)strtol(cp, &ep, 10);
if (*ep)
error(ERROR_exit(1), "%s: %s: numeric argument expected", tp->name, cp);
switch (tp->field)
{
#if _mem_c_line_termios
case C_LINE:
sp->c_line = c;
break;
#endif
case C_SPEED:
if(getspeed(c))
{
if (*tp->name != 'o')
cfsetispeed(sp, c);
if (*tp->name != 'i')
cfsetospeed(sp, c);
}
else
error(ERROR_exit(1), "%s: %s: invalid speed", tp->name, cp);
break;
case T_CHAR:
sp->c_cc[tp->mask] = c;
break;
}
break;
case SPEED:
cfsetospeed(sp, tp->mask);
cfsetispeed(sp, tp->mask);
break;
case SIZE:
sp->c_cflag &= ~CSIZE;
sp->c_cflag |= tp->mask;
break;
case SANE:
sane(sp);
break;
#if defined(OLCUC) && defined(IUCLC)
case CASE:
if(off)
{
sp->c_iflag |= IUCLC;
sp->c_oflag |= OLCUC;
}
else
{
sp->c_iflag &= ~IUCLC;
sp->c_oflag &= ~OLCUC;
}
break;
#endif
}
}
}
static void listchars(Sfio_t *sp,int type)
{
int i,c;
c = (type==CHAR?'c':'n');
for(i=0; i < elementsof(Ttable); i++)
{
if(Ttable[i].type==type && *Ttable[i].description)
sfprintf(sp,"[+%s \a%c\a?%s.]",Ttable[i].name,c,Ttable[i].description);
}
}
static void listgroup(Sfio_t *sp,int type, const char *description)
{
int i;
sfprintf(sp,"[+");
for(i=0; i < elementsof(Ttable); i++)
{
if(Ttable[i].type==type)
sfprintf(sp,"%s ",Ttable[i].name);
}
sfprintf(sp,"?%s.]",description);
}
static void listmask(Sfio_t *sp,unsigned int mask,const char *description)
{
int i;
sfprintf(sp,"[+");
for(i=0; i < elementsof(Ttable); i++)
{
if(Ttable[i].mask==mask && Ttable[i].type==BITS)
sfprintf(sp,"%s ",Ttable[i].name);
}
sfprintf(sp,"?%s.]",description);
}
static void listfields(Sfio_t *sp,int field)
{
int i;
for(i=0; i < elementsof(Ttable); i++)
{
if(Ttable[i].field==field && Ttable[i].type==BIT && *Ttable[i].description)
sfprintf(sp,"[+%s (-%s)?%s.]",Ttable[i].name,Ttable[i].name,Ttable[i].description);
}
}
static void listmode(Sfio_t *sp,const char *name)
{
sfprintf(sp,"[+%s?%s.]",name,lookup(name)->description);
}
static int infof(Opt_t* op, Sfio_t* sp, const char* s, Optdisc_t* dp)
{
NoP(op);
NoP(s);
NoP(dp);
sfprintf(sp,"[+Control Modes.]{");
listfields(sp,C_FLAG);
listgroup(sp,SPEED,"Attempt to set input and output baud rate to number given. A value of \b0\b causes immediate hangup");
listchars(sp,NUM);
listgroup(sp,SIZE,"Number of bits in a character");
sfprintf(sp,"}[+Input Modes.]{");
listfields(sp,I_FLAG);
sfprintf(sp,"}[+Output Modes.]{");
listfields(sp,O_FLAG);
#ifdef CRDLY
listmask(sp,CRDLY,"Carriage return delay style");
#endif
#ifdef NLDLY
listmask(sp,NLDLY,"Newline delay style");
#endif
#ifdef TABDLY
listmask(sp,TABDLY,"Horizontal tab delay style");
#endif
#ifdef BSDLY
listmask(sp,BSDLY,"Backspace delay style");
#endif
#ifdef FFDLY
listmask(sp,FFDLY,"Form feed delay style");
#endif
#ifdef VTDLY
listmask(sp,VTDLY,"Vertical tab delay style");
#endif
sfprintf(sp,"}[+Local Modes.]{");
listfields(sp,L_FLAG);
sfprintf(sp,"}[+Control Assignments.?If \ac\a is \bundef\b or an empty "
"string then the control assignment is disabled.]{");
listchars(sp,WIND);
listchars(sp,CHAR);
sfprintf(sp,"}[+Combination Modes.]{");
listmode(sp,"ek");
listmode(sp,"evenp");
listmode(sp,"lcase");
listmode(sp,"oddp");
listmode(sp,"parity");
listmode(sp,"sane");
listmode(sp,"tabs");
listmode(sp,"LCASE");
sfputc(sp,'}');
return(1);
}
#ifndef _lib_tcgetpgrp
# ifdef TIOCGPGRP
static int _i_;
# define tcgetpgrp(a) (ioctl(a, TIOCGPGRP, &_i_)>=0?_i_:-1)
# else
# define tcgetpgrp(a) (-1)
# endif
#endif
int
b_stty(int argc, char** argv, Shbltin_t* context)
{
struct termios tty;
register int n;
register int flags = 0;
int fd = 0;
const Tty_t* tp;
Optdisc_t disc;
cmdinit(argc, argv, context, ERROR_CATALOG, ERROR_INTERACTIVE);
memset(&disc, 0, sizeof(disc));
disc.version = OPT_VERSION;
disc.infof = infof;
opt_info.disc = &disc;
for (;;)
{
switch (n = optget(argv, usage))
{
case 'f':
fd = (int)opt_info.num;
continue;
case 'a':
case 'g':
case 't':
if (!opt_info.offset || !argv[opt_info.index][opt_info.offset])
{
switch (n)
{
case 'a':
flags |= A_FLAG;
break;
case 'g':
flags |= G_FLAG;
break;
case 't':
flags |= T_FLAG;
break;
}
continue;
}
case ':':
if (!opt_info.offset)
error(2, "%s", opt_info.arg);
else if (!(tp = lookup(argv[opt_info.index]+1)) || (tp->type != BIT && tp->type != TABS))
error(ERROR_exit(1), "%s: unknown mode", argv[opt_info.index]);
break;
case '?':
error(ERROR_usage(2), "%s", opt_info.arg);
break;
}
break;
}
argv += opt_info.index;
if (error_info.errors || (flags && *argv) || (flags&(flags-1)))
error(ERROR_usage(2), "%s", optusage(NiL));
if (tcgetattr(fd, &tty) < 0)
error(ERROR_system(1), "not a tty");
if (flags & T_FLAG)
sfprintf(sfstdout, "%d\n", tcgetpgrp(0));
else if (*argv)
{
if (!argv[1] && **argv == ':')
gin(*argv, &tty);
else
set(argv, &tty);
if (tcsetattr(0, TCSANOW, &tty) < 0)
error(ERROR_system(1), "cannot set tty");
}
else
output(&tty, flags);
return error_info.errors;
}
