[unix-history] / usr / src / usr.bin / ul / ul.c

/*
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1980, 1993\n\
	The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)ul.c	8.1 (Berkeley) %G%";
#endif /* not lint */

#include <stdio.h>

#define	IESC	'\033'
#define	SO	'\016'
#define	SI	'\017'
#define	HFWD	'9'
#define	HREV	'8'
#define	FREV	'7'
#define	MAXBUF	512

#define	NORMAL	000
#define	ALTSET	001	/* Reverse */
#define	SUPERSC	002	/* Dim */
#define	SUBSC	004	/* Dim | Ul */
#define	UNDERL	010	/* Ul */
#define	BOLD	020	/* Bold */

int	must_use_uc, must_overstrike;
char	*CURS_UP, *CURS_RIGHT, *CURS_LEFT,
	*ENTER_STANDOUT, *EXIT_STANDOUT, *ENTER_UNDERLINE, *EXIT_UNDERLINE,
	*ENTER_DIM, *ENTER_BOLD, *ENTER_REVERSE, *UNDER_CHAR, *EXIT_ATTRIBUTES;

struct	CHAR	{
	char	c_mode;
	char	c_char;
} ;

struct	CHAR	obuf[MAXBUF];
int	col, maxcol;
int	mode;
int	halfpos;
int	upln;
int	iflag;

int	outchar();
#define	PRINT(s)	if (s == NULL) /* void */; else tputs(s, 1, outchar)

main(argc, argv)
	int argc;
	char **argv;
{
	extern int optind;
	extern char *optarg;
	int c;
	char *termtype;
	FILE *f;
	char termcap[1024];
	char *getenv(), *strcpy();

	termtype = getenv("TERM");
	if (termtype == NULL || (argv[0][0] == 'c' && !isatty(1)))
		termtype = "lpr";
	while ((c=getopt(argc, argv, "it:T:")) != EOF)
		switch(c) {

		case 't':
		case 'T': /* for nroff compatibility */
				termtype = optarg;
			break;
		case 'i':
			iflag = 1;
			break;

		default:
			fprintf(stderr,
				"usage: %s [ -i ] [ -tTerm ] file...\n",
				argv[0]);
			exit(1);
		}

	switch(tgetent(termcap, termtype)) {

	case 1:
		break;

	default:
		fprintf(stderr,"trouble reading termcap");
		/* fall through to ... */

	case 0:
		/* No such terminal type - assume dumb */
		(void)strcpy(termcap, "dumb:os:col#80:cr=^M:sf=^J:am:");
		break;
	}
	initcap();
	if (    (tgetflag("os") && ENTER_BOLD==NULL ) ||
		(tgetflag("ul") && ENTER_UNDERLINE==NULL && UNDER_CHAR==NULL))
			must_overstrike = 1;
	initbuf();
	if (optind == argc)
		filter(stdin);
	else for (; optind<argc; optind++) {
		f = fopen(argv[optind],"r");
		if (f == NULL) {
			perror(argv[optind]);
			exit(1);
		} else
			filter(f);
	}
	exit(0);
}

filter(f)
	FILE *f;
{
	register c;

	while ((c = getc(f)) != EOF) switch(c) {

	case '\b':
		if (col > 0)
			col--;
		continue;

	case '\t':
		col = (col+8) & ~07;
		if (col > maxcol)
			maxcol = col;
		continue;

	case '\r':
		col = 0;
		continue;

	case SO:
		mode |= ALTSET;
		continue;

	case SI:
		mode &= ~ALTSET;
		continue;

	case IESC:
		switch (c = getc(f)) {

		case HREV:
			if (halfpos == 0) {
				mode |= SUPERSC;
				halfpos--;
			} else if (halfpos > 0) {
				mode &= ~SUBSC;
				halfpos--;
			} else {
				halfpos = 0;
				reverse();
			}
			continue;

		case HFWD:
			if (halfpos == 0) {
				mode |= SUBSC;
				halfpos++;
			} else if (halfpos < 0) {
				mode &= ~SUPERSC;
				halfpos++;
			} else {
				halfpos = 0;
				fwd();
			}
			continue;

		case FREV:
			reverse();
			continue;

		default:
			fprintf(stderr,
				"Unknown escape sequence in input: %o, %o\n",
				IESC, c);
			exit(1);
		}
		continue;

	case '_':
		if (obuf[col].c_char)
			obuf[col].c_mode |= UNDERL | mode;
		else
			obuf[col].c_char = '_';
	case ' ':
		col++;
		if (col > maxcol)
			maxcol = col;
		continue;

	case '\n':
		flushln();
		continue;

	case '\f':
		flushln();
		putchar('\f');
		continue;

	default:
		if (c < ' ')	/* non printing */
			continue;
		if (obuf[col].c_char == '\0') {
			obuf[col].c_char = c;
			obuf[col].c_mode = mode;
		} else if (obuf[col].c_char == '_') {
			obuf[col].c_char = c;
			obuf[col].c_mode |= UNDERL|mode;
		} else if (obuf[col].c_char == c)
			obuf[col].c_mode |= BOLD|mode;
		else
			obuf[col].c_mode = mode;
		col++;
		if (col > maxcol)
			maxcol = col;
		continue;
	}
	if (maxcol)
		flushln();
}

flushln()
{
	register lastmode;
	register i;
	int hadmodes = 0;

	lastmode = NORMAL;
	for (i=0; i<maxcol; i++) {
		if (obuf[i].c_mode != lastmode) {
			hadmodes++;
			setmode(obuf[i].c_mode);
			lastmode = obuf[i].c_mode;
		}
		if (obuf[i].c_char == '\0') {
			if (upln)
				PRINT(CURS_RIGHT);
			else
				outc(' ');
		} else
			outc(obuf[i].c_char);
	}
	if (lastmode != NORMAL) {
		setmode(0);
	}
	if (must_overstrike && hadmodes)
		overstrike();
	putchar('\n');
	if (iflag && hadmodes)
		iattr();
	(void)fflush(stdout);
	if (upln)
		upln--;
	initbuf();
}

/*
 * For terminals that can overstrike, overstrike underlines and bolds.
 * We don't do anything with halfline ups and downs, or Greek.
 */
overstrike()
{
	register int i;
	char lbuf[256];
	register char *cp = lbuf;
	int hadbold=0;

	/* Set up overstrike buffer */
	for (i=0; i<maxcol; i++)
		switch (obuf[i].c_mode) {
		case NORMAL:
		default:
			*cp++ = ' ';
			break;
		case UNDERL:
			*cp++ = '_';
			break;
		case BOLD:
			*cp++ = obuf[i].c_char;
			hadbold=1;
			break;
		}
	putchar('\r');
	for (*cp=' '; *cp==' '; cp--)
		*cp = 0;
	for (cp=lbuf; *cp; cp++)
		putchar(*cp);
	if (hadbold) {
		putchar('\r');
		for (cp=lbuf; *cp; cp++)
			putchar(*cp=='_' ? ' ' : *cp);
		putchar('\r');
		for (cp=lbuf; *cp; cp++)
			putchar(*cp=='_' ? ' ' : *cp);
	}
}

iattr()
{
	register int i;
	char lbuf[256];
	register char *cp = lbuf;

	for (i=0; i<maxcol; i++)
		switch (obuf[i].c_mode) {
		case NORMAL:	*cp++ = ' '; break;
		case ALTSET:	*cp++ = 'g'; break;
		case SUPERSC:	*cp++ = '^'; break;
		case SUBSC:	*cp++ = 'v'; break;
		case UNDERL:	*cp++ = '_'; break;
		case BOLD:	*cp++ = '!'; break;
		default:	*cp++ = 'X'; break;
		}
	for (*cp=' '; *cp==' '; cp--)
		*cp = 0;
	for (cp=lbuf; *cp; cp++)
		putchar(*cp);
	putchar('\n');
}

initbuf()
{

	bzero((char *)obuf, sizeof (obuf));	/* depends on NORMAL == 0 */
	col = 0;
	maxcol = 0;
	mode &= ALTSET;
}

fwd()
{
	register oldcol, oldmax;

	oldcol = col;
	oldmax = maxcol;
	flushln();
	col = oldcol;
	maxcol = oldmax;
}

reverse()
{
	upln++;
	fwd();
	PRINT(CURS_UP);
	PRINT(CURS_UP);
	upln++;
}

initcap()
{
	static char tcapbuf[512];
	char *bp = tcapbuf;
	char *getenv(), *tgetstr();

	/* This nonsense attempts to work with both old and new termcap */
	CURS_UP =		tgetstr("up", &bp);
	CURS_RIGHT =		tgetstr("ri", &bp);
	if (CURS_RIGHT == NULL)
		CURS_RIGHT =	tgetstr("nd", &bp);
	CURS_LEFT =		tgetstr("le", &bp);
	if (CURS_LEFT == NULL)
		CURS_LEFT =	tgetstr("bc", &bp);
	if (CURS_LEFT == NULL && tgetflag("bs"))
		CURS_LEFT =	"\b";

	ENTER_STANDOUT =	tgetstr("so", &bp);
	EXIT_STANDOUT =		tgetstr("se", &bp);
	ENTER_UNDERLINE =	tgetstr("us", &bp);
	EXIT_UNDERLINE =	tgetstr("ue", &bp);
	ENTER_DIM =		tgetstr("mh", &bp);
	ENTER_BOLD =		tgetstr("md", &bp);
	ENTER_REVERSE =		tgetstr("mr", &bp);
	EXIT_ATTRIBUTES =	tgetstr("me", &bp);

	if (!ENTER_BOLD && ENTER_REVERSE)
		ENTER_BOLD = ENTER_REVERSE;
	if (!ENTER_BOLD && ENTER_STANDOUT)
		ENTER_BOLD = ENTER_STANDOUT;
	if (!ENTER_UNDERLINE && ENTER_STANDOUT) {
		ENTER_UNDERLINE = ENTER_STANDOUT;
		EXIT_UNDERLINE = EXIT_STANDOUT;
	}
	if (!ENTER_DIM && ENTER_STANDOUT)
		ENTER_DIM = ENTER_STANDOUT;
	if (!ENTER_REVERSE && ENTER_STANDOUT)
		ENTER_REVERSE = ENTER_STANDOUT;
	if (!EXIT_ATTRIBUTES && EXIT_STANDOUT)
		EXIT_ATTRIBUTES = EXIT_STANDOUT;
	
	/*
	 * Note that we use REVERSE for the alternate character set,
	 * not the as/ae capabilities.  This is because we are modelling
	 * the model 37 teletype (since that's what nroff outputs) and
	 * the typical as/ae is more of a graphics set, not the greek
	 * letters the 37 has.
	 */

	UNDER_CHAR =		tgetstr("uc", &bp);
	must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
}

outchar(c)
	int c;
{
	putchar(c & 0177);
}

static int curmode = 0;

outc(c)
	int c;
{
	putchar(c);
	if (must_use_uc && (curmode&UNDERL)) {
		PRINT(CURS_LEFT);
		PRINT(UNDER_CHAR);
	}
}

setmode(newmode)
	int newmode;
{
	if (!iflag) {
		if (curmode != NORMAL && newmode != NORMAL)
			setmode(NORMAL);
		switch (newmode) {
		case NORMAL:
			switch(curmode) {
			case NORMAL:
				break;
			case UNDERL:
				PRINT(EXIT_UNDERLINE);
				break;
			default:
				/* This includes standout */
				PRINT(EXIT_ATTRIBUTES);
				break;
			}
			break;
		case ALTSET:
			PRINT(ENTER_REVERSE);
			break;
		case SUPERSC:
			/*
			 * This only works on a few terminals.
			 * It should be fixed.
			 */
			PRINT(ENTER_UNDERLINE);
			PRINT(ENTER_DIM);
			break;
		case SUBSC:
			PRINT(ENTER_DIM);
			break;
		case UNDERL:
			PRINT(ENTER_UNDERLINE);
			break;
		case BOLD:
			PRINT(ENTER_BOLD);
			break;
		default:
			/*
			 * We should have some provision here for multiple modes
			 * on at once.  This will have to come later.
			 */
			PRINT(ENTER_STANDOUT);
			break;
		}
	}
	curmode = newmode;
}
Commit	Line	Data
22e155fc	1	/*
49d25eef KB	2	* Copyright (c) 1980, 1993
49d25eef KB	3	* The Regents of the University of California. All rights reserved.
cc59a365	4	*
cb956e54	5	* %sccs.include.redist.c%
22e155fc DF	6	*/
	7
	8	#ifndef lint
49d25eef KB	9	static char copyright[] =
	10	"@(#) Copyright (c) 1980, 1993\n\
	11	The Regents of the University of California. All rights reserved.\n";
ac0d117c	12	#endif /* not lint */
22e155fc	13
476fcd16	14	#ifndef lint
49d25eef	15	static char sccsid[] = "@(#)ul.c 8.1 (Berkeley) %G%";
ac0d117c	16	#endif /* not lint */
a7878ce2	17
2770968b BJ	18	#include <stdio.h>
2770968b BJ	19
94c88dd0 BJ	20	#define IESC '\033'
	21	#define SO '\016'
	22	#define SI '\017'
	23	#define HFWD '9'
	24	#define HREV '8'
	25	#define FREV '7'
	26	#define MAXBUF 512
	27
	28	#define NORMAL 000
	29	#define ALTSET 001 /* Reverse */
	30	#define SUPERSC 002 /* Dim */
	31	#define SUBSC 004 /* Dim \| Ul */
	32	#define UNDERL 010 /* Ul */
	33	#define BOLD 020 /* Bold */
	34
	35	int must_use_uc, must_overstrike;
	36	char CURS_UP, CURS_RIGHT, *CURS_LEFT,
	37	ENTER_STANDOUT, EXIT_STANDOUT, ENTER_UNDERLINE, EXIT_UNDERLINE,
	38	ENTER_DIM, ENTER_BOLD, ENTER_REVERSE, UNDER_CHAR, *EXIT_ATTRIBUTES;
	39
	40	struct CHAR {
	41	char c_mode;
	42	char c_char;
	43	} ;
	44
94c88dd0 BJ	45	struct CHAR obuf[MAXBUF];
	46	int col, maxcol;
	47	int mode;
	48	int halfpos;
	49	int upln;
	50	int iflag;
2770968b	51
d47815e8 CT	52	int outchar();
	53	#define PRINT(s) if (s == NULL) /* void */; else tputs(s, 1, outchar)
	54
2770968b BJ	55	main(argc, argv)
	56	int argc;
	57	char **argv;
	58	{
ac0d117c KB	59	extern int optind;
ac0d117c KB	60	extern char *optarg;
94c88dd0	61	int c;
ac0d117c	62	char *termtype;
2770968b	63	FILE *f;
94c88dd0	64	char termcap[1024];
ac0d117c	65	char getenv(), strcpy();
2770968b	66
2770968b	67	termtype = getenv("TERM");
94c88dd0 BJ	68	if (termtype == NULL \|\| (argv[0][0] == 'c' && !isatty(1)))
	69	termtype = "lpr";
	70	while ((c=getopt(argc, argv, "it:T:")) != EOF)
	71	switch(c) {
2770968b BJ	72
	73	case 't':
	74	case 'T': /* for nroff compatibility */
94c88dd0	75	termtype = optarg;
2770968b BJ	76	break;
2770968b BJ	77	case 'i':
94c88dd0 BJ	78	iflag = 1;
94c88dd0 BJ	79	break;
2770968b BJ	80
2770968b BJ	81	default:
94c88dd0	82	fprintf(stderr,
ac0d117c	83	"usage: %s [ -i ] [ -tTerm ] file...\n",
94c88dd0	84	argv[0]);
2770968b BJ	85	exit(1);
2770968b BJ	86	}
94c88dd0	87
2770968b BJ	88	switch(tgetent(termcap, termtype)) {
	89
	90	case 1:
2770968b BJ	91	break;
	92
	93	default:
	94	fprintf(stderr,"trouble reading termcap");
	95	/* fall through to ... */
	96
	97	case 0:
	98	/* No such terminal type - assume dumb */
ac0d117c	99	(void)strcpy(termcap, "dumb:os:col#80:cr=^M:sf=^J:am:");
2770968b BJ	100	break;
2770968b BJ	101	}
94c88dd0 BJ	102	initcap();
	103	if ( (tgetflag("os") && ENTER_BOLD==NULL ) \|\|
	104	(tgetflag("ul") && ENTER_UNDERLINE==NULL && UNDER_CHAR==NULL))
	105	must_overstrike = 1;
94c88dd0 BJ	106	initbuf();
94c88dd0 BJ	107	if (optind == argc)
2770968b	108	filter(stdin);
94c88dd0 BJ	109	else for (; optind<argc; optind++) {
94c88dd0 BJ	110	f = fopen(argv[optind],"r");
2770968b	111	if (f == NULL) {
94c88dd0	112	perror(argv[optind]);
2770968b BJ	113	exit(1);
	114	} else
	115	filter(f);
	116	}
	117	exit(0);
	118	}
	119
	120	filter(f)
d47815e8	121	FILE *f;
2770968b	122	{
94c88dd0	123	register c;
2770968b	124
d47815e8	125	while ((c = getc(f)) != EOF) switch(c) {
94c88dd0 BJ	126
	127	case '\b':
	128	if (col > 0)
	129	col--;
	130	continue;
	131
	132	case '\t':
	133	col = (col+8) & ~07;
	134	if (col > maxcol)
	135	maxcol = col;
	136	continue;
	137
	138	case '\r':
	139	col = 0;
	140	continue;
	141
	142	case SO:
	143	mode \|= ALTSET;
	144	continue;
	145
	146	case SI:
	147	mode &= ~ALTSET;
	148	continue;
	149
	150	case IESC:
	151	switch (c = getc(f)) {
	152
	153	case HREV:
	154	if (halfpos == 0) {
	155	mode \|= SUPERSC;
	156	halfpos--;
	157	} else if (halfpos > 0) {
	158	mode &= ~SUBSC;
	159	halfpos--;
2770968b	160	} else {
94c88dd0 BJ	161	halfpos = 0;
94c88dd0 BJ	162	reverse();
2770968b	163	}
94c88dd0	164	continue;
2770968b	165
94c88dd0 BJ	166	case HFWD:
	167	if (halfpos == 0) {
	168	mode \|= SUBSC;
	169	halfpos++;
	170	} else if (halfpos < 0) {
	171	mode &= ~SUPERSC;
	172	halfpos++;
	173	} else {
	174	halfpos = 0;
	175	fwd();
2770968b	176	}
94c88dd0 BJ	177	continue;
	178
	179	case FREV:
	180	reverse();
	181	continue;
	182
	183	default:
	184	fprintf(stderr,
	185	"Unknown escape sequence in input: %o, %o\n",
	186	IESC, c);
	187	exit(1);
2770968b	188	}
94c88dd0 BJ	189	continue;
	190
	191	case '_':
	192	if (obuf[col].c_char)
	193	obuf[col].c_mode \|= UNDERL \| mode;
	194	else
	195	obuf[col].c_char = '_';
	196	case ' ':
	197	col++;
	198	if (col > maxcol)
	199	maxcol = col;
	200	continue;
	201
	202	case '\n':
	203	flushln();
5041df75	204	continue;
94c88dd0	205
ac0d117c KB	206	case '\f':
	207	flushln();
	208	putchar('\f');
	209	continue;
	210
94c88dd0 BJ	211	default:
	212	if (c < ' ') /* non printing */
	213	continue;
	214	if (obuf[col].c_char == '\0') {
	215	obuf[col].c_char = c;
	216	obuf[col].c_mode = mode;
	217	} else if (obuf[col].c_char == '_') {
	218	obuf[col].c_char = c;
	219	obuf[col].c_mode \|= UNDERL\|mode;
5041df75	220	} else if (obuf[col].c_char == c)
94c88dd0	221	obuf[col].c_mode \|= BOLD\|mode;
eda93319	222	else
5041df75	223	obuf[col].c_mode = mode;
94c88dd0 BJ	224	col++;
	225	if (col > maxcol)
	226	maxcol = col;
	227	continue;
2770968b	228	}
5041df75 RC	229	if (maxcol)
5041df75 RC	230	flushln();
2770968b BJ	231	}
2770968b BJ	232
94c88dd0	233	flushln()
2770968b	234	{
94c88dd0 BJ	235	register lastmode;
	236	register i;
	237	int hadmodes = 0;
	238
	239	lastmode = NORMAL;
	240	for (i=0; i<maxcol; i++) {
	241	if (obuf[i].c_mode != lastmode) {
	242	hadmodes++;
	243	setmode(obuf[i].c_mode);
	244	lastmode = obuf[i].c_mode;
	245	}
	246	if (obuf[i].c_char == '\0') {
d47815e8 CT	247	if (upln)
	248	PRINT(CURS_RIGHT);
	249	else
94c88dd0 BJ	250	outc(' ');
	251	} else
	252	outc(obuf[i].c_char);
	253	}
	254	if (lastmode != NORMAL) {
	255	setmode(0);
	256	}
	257	if (must_overstrike && hadmodes)
	258	overstrike();
	259	putchar('\n');
	260	if (iflag && hadmodes)
	261	iattr();
ac0d117c	262	(void)fflush(stdout);
94c88dd0 BJ	263	if (upln)
	264	upln--;
	265	initbuf();
2770968b BJ	266	}
2770968b BJ	267
94c88dd0 BJ	268	/*
	269	* For terminals that can overstrike, overstrike underlines and bolds.
	270	* We don't do anything with halfline ups and downs, or Greek.
	271	*/
	272	overstrike()
	273	{
	274	register int i;
	275	char lbuf[256];
	276	register char *cp = lbuf;
	277	int hadbold=0;
2770968b	278
94c88dd0 BJ	279	/* Set up overstrike buffer */
	280	for (i=0; i<maxcol; i++)
	281	switch (obuf[i].c_mode) {
	282	case NORMAL:
	283	default:
	284	*cp++ = ' ';
	285	break;
	286	case UNDERL:
	287	*cp++ = '_';
	288	break;
	289	case BOLD:
	290	*cp++ = obuf[i].c_char;
	291	hadbold=1;
	292	break;
	293	}
	294	putchar('\r');
	295	for (cp=' '; cp==' '; cp--)
	296	*cp = 0;
	297	for (cp=lbuf; *cp; cp++)
	298	putchar(*cp);
	299	if (hadbold) {
	300	putchar('\r');
	301	for (cp=lbuf; *cp; cp++)
	302	putchar(cp=='_' ? ' ' : cp);
	303	putchar('\r');
	304	for (cp=lbuf; *cp; cp++)
	305	putchar(cp=='_' ? ' ' : cp);
	306	}
	307	}
2770968b	308
94c88dd0	309	iattr()
2770968b	310	{
94c88dd0 BJ	311	register int i;
	312	char lbuf[256];
	313	register char *cp = lbuf;
2770968b	314
94c88dd0 BJ	315	for (i=0; i<maxcol; i++)
	316	switch (obuf[i].c_mode) {
	317	case NORMAL: *cp++ = ' '; break;
	318	case ALTSET: *cp++ = 'g'; break;
	319	case SUPERSC: *cp++ = '^'; break;
	320	case SUBSC: *cp++ = 'v'; break;
	321	case UNDERL: *cp++ = '_'; break;
	322	case BOLD: *cp++ = '!'; break;
	323	default: *cp++ = 'X'; break;
2770968b	324	}
94c88dd0 BJ	325	for (cp=' '; cp==' '; cp--)
	326	*cp = 0;
	327	for (cp=lbuf; *cp; cp++)
	328	putchar(*cp);
	329	putchar('\n');
2770968b BJ	330	}
2770968b BJ	331
94c88dd0	332	initbuf()
2770968b	333	{
2770968b	334
ac0d117c	335	bzero((char )obuf, sizeof (obuf)); / depends on NORMAL == 0 */
94c88dd0 BJ	336	col = 0;
	337	maxcol = 0;
	338	mode &= ALTSET;
2770968b BJ	339	}
2770968b BJ	340
94c88dd0	341	fwd()
2770968b	342	{
94c88dd0	343	register oldcol, oldmax;
2770968b	344
94c88dd0 BJ	345	oldcol = col;
	346	oldmax = maxcol;
	347	flushln();
	348	col = oldcol;
	349	maxcol = oldmax;
	350	}
	351
	352	reverse()
	353	{
	354	upln++;
	355	fwd();
d47815e8 CT	356	PRINT(CURS_UP);
d47815e8 CT	357	PRINT(CURS_UP);
94c88dd0 BJ	358	upln++;
	359	}
	360
	361	initcap()
	362	{
	363	static char tcapbuf[512];
94c88dd0 BJ	364	char *bp = tcapbuf;
	365	char getenv(), tgetstr();
	366
	367	/* This nonsense attempts to work with both old and new termcap */
	368	CURS_UP = tgetstr("up", &bp);
	369	CURS_RIGHT = tgetstr("ri", &bp);
	370	if (CURS_RIGHT == NULL)
	371	CURS_RIGHT = tgetstr("nd", &bp);
	372	CURS_LEFT = tgetstr("le", &bp);
	373	if (CURS_LEFT == NULL)
	374	CURS_LEFT = tgetstr("bc", &bp);
	375	if (CURS_LEFT == NULL && tgetflag("bs"))
	376	CURS_LEFT = "\b";
	377
	378	ENTER_STANDOUT = tgetstr("so", &bp);
	379	EXIT_STANDOUT = tgetstr("se", &bp);
	380	ENTER_UNDERLINE = tgetstr("us", &bp);
	381	EXIT_UNDERLINE = tgetstr("ue", &bp);
	382	ENTER_DIM = tgetstr("mh", &bp);
	383	ENTER_BOLD = tgetstr("md", &bp);
	384	ENTER_REVERSE = tgetstr("mr", &bp);
	385	EXIT_ATTRIBUTES = tgetstr("me", &bp);
	386
	387	if (!ENTER_BOLD && ENTER_REVERSE)
	388	ENTER_BOLD = ENTER_REVERSE;
	389	if (!ENTER_BOLD && ENTER_STANDOUT)
	390	ENTER_BOLD = ENTER_STANDOUT;
	391	if (!ENTER_UNDERLINE && ENTER_STANDOUT) {
	392	ENTER_UNDERLINE = ENTER_STANDOUT;
	393	EXIT_UNDERLINE = EXIT_STANDOUT;
	394	}
	395	if (!ENTER_DIM && ENTER_STANDOUT)
	396	ENTER_DIM = ENTER_STANDOUT;
	397	if (!ENTER_REVERSE && ENTER_STANDOUT)
	398	ENTER_REVERSE = ENTER_STANDOUT;
	399	if (!EXIT_ATTRIBUTES && EXIT_STANDOUT)
	400	EXIT_ATTRIBUTES = EXIT_STANDOUT;
	401
	402	/*
	403	* Note that we use REVERSE for the alternate character set,
	404	* not the as/ae capabilities. This is because we are modelling
	405	* the model 37 teletype (since that's what nroff outputs) and
	406	* the typical as/ae is more of a graphics set, not the greek
	407	* letters the 37 has.
	408	*/
	409
94c88dd0 BJ	410	UNDER_CHAR = tgetstr("uc", &bp);
	411	must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
	412	}
	413
	414	outchar(c)
d47815e8	415	int c;
94c88dd0	416	{
d47815e8	417	putchar(c & 0177);
94c88dd0 BJ	418	}
94c88dd0 BJ	419
d47815e8	420	static int curmode = 0;
94c88dd0	421
94c88dd0	422	outc(c)
d47815e8	423	int c;
94c88dd0 BJ	424	{
94c88dd0 BJ	425	putchar(c);
d47815e8 CT	426	if (must_use_uc && (curmode&UNDERL)) {
	427	PRINT(CURS_LEFT);
	428	PRINT(UNDER_CHAR);
94c88dd0 BJ	429	}
	430	}
	431
	432	setmode(newmode)
d47815e8	433	int newmode;
94c88dd0	434	{
d47815e8	435	if (!iflag) {
a7878ce2 BJ	436	if (curmode != NORMAL && newmode != NORMAL)
a7878ce2 BJ	437	setmode(NORMAL);
94c88dd0 BJ	438	switch (newmode) {
	439	case NORMAL:
	440	switch(curmode) {
	441	case NORMAL:
2770968b	442	break;
94c88dd0	443	case UNDERL:
d47815e8	444	PRINT(EXIT_UNDERLINE);
2770968b	445	break;
94c88dd0 BJ	446	default:
94c88dd0 BJ	447	/* This includes standout */
d47815e8	448	PRINT(EXIT_ATTRIBUTES);
2770968b	449	break;
94c88dd0 BJ	450	}
	451	break;
	452	case ALTSET:
d47815e8	453	PRINT(ENTER_REVERSE);
94c88dd0 BJ	454	break;
	455	case SUPERSC:
	456	/*
	457	* This only works on a few terminals.
	458	* It should be fixed.
	459	*/
d47815e8 CT	460	PRINT(ENTER_UNDERLINE);
d47815e8 CT	461	PRINT(ENTER_DIM);
94c88dd0 BJ	462	break;
94c88dd0 BJ	463	case SUBSC:
d47815e8	464	PRINT(ENTER_DIM);
94c88dd0 BJ	465	break;
94c88dd0 BJ	466	case UNDERL:
d47815e8	467	PRINT(ENTER_UNDERLINE);
94c88dd0 BJ	468	break;
94c88dd0 BJ	469	case BOLD:
d47815e8	470	PRINT(ENTER_BOLD);
94c88dd0 BJ	471	break;
	472	default:
	473	/*
	474	* We should have some provision here for multiple modes
	475	* on at once. This will have to come later.
	476	*/
d47815e8	477	PRINT(ENTER_STANDOUT);
94c88dd0	478	break;
2770968b	479	}
a7878ce2	480	}
94c88dd0 BJ	481	curmode = newmode;
94c88dd0 BJ	482	}