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

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

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

#ifndef lint
static char sccsid[] = "@(#)ul.c	5.6 (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;

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) {
				puts(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();
	puts(CURS_UP);
	puts(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)
char c;
{
	putchar(c&0177);
}

puts(str)
char *str;
{
	if (str)
		tputs(str, 1, outchar);
}

static curmode = 0;
outc(c)
char c;
{
	putchar(c);
	if (must_use_uc &&  (curmode&UNDERL)) {
		puts(CURS_LEFT);
		puts(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:
				puts(EXIT_UNDERLINE);
				break;
			default:
				/* This includes standout */
				puts(EXIT_ATTRIBUTES);
				break;
			}
			break;
		case ALTSET:
			puts(ENTER_REVERSE);
			break;
		case SUPERSC:
			/*
			 * This only works on a few terminals.
			 * It should be fixed.
			 */
			puts(ENTER_UNDERLINE);
			puts(ENTER_DIM);
			break;
		case SUBSC:
			puts(ENTER_DIM);
			break;
		case UNDERL:
			puts(ENTER_UNDERLINE);
			break;
		case BOLD:
			puts(ENTER_BOLD);
			break;
		default:
			/*
			 * We should have some provision here for multiple modes
			 * on at once.  This will have to come later.
			 */
			puts(ENTER_STANDOUT);
			break;
		}
	}
	curmode = newmode;
}
Commit	Line	Data
22e155fc DF	1	/*
22e155fc DF	2	* Copyright (c) 1980 Regents of the University of California.
cc59a365 KB	3	* All rights reserved.
cc59a365 KB	4	*
cb956e54	5	* %sccs.include.redist.c%
22e155fc DF	6	*/
	7
	8	#ifndef lint
	9	char copyright[] =
	10	"@(#) Copyright (c) 1980 Regents of the University of California.\n\
	11	All rights reserved.\n";
ac0d117c	12	#endif /* not lint */
22e155fc	13
476fcd16	14	#ifndef lint
cb956e54	15	static char sccsid[] = "@(#)ul.c 5.6 (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 BJ	51
	52	main(argc, argv)
	53	int argc;
	54	char **argv;
	55	{
ac0d117c KB	56	extern int optind;
ac0d117c KB	57	extern char *optarg;
94c88dd0	58	int c;
ac0d117c	59	char *termtype;
2770968b	60	FILE *f;
94c88dd0	61	char termcap[1024];
ac0d117c	62	char getenv(), strcpy();
2770968b	63
2770968b	64	termtype = getenv("TERM");
94c88dd0 BJ	65	if (termtype == NULL \|\| (argv[0][0] == 'c' && !isatty(1)))
	66	termtype = "lpr";
	67	while ((c=getopt(argc, argv, "it:T:")) != EOF)
	68	switch(c) {
2770968b BJ	69
	70	case 't':
	71	case 'T': /* for nroff compatibility */
94c88dd0	72	termtype = optarg;
2770968b BJ	73	break;
2770968b BJ	74	case 'i':
94c88dd0 BJ	75	iflag = 1;
94c88dd0 BJ	76	break;
2770968b BJ	77
2770968b BJ	78	default:
94c88dd0	79	fprintf(stderr,
ac0d117c	80	"usage: %s [ -i ] [ -tTerm ] file...\n",
94c88dd0	81	argv[0]);
2770968b BJ	82	exit(1);
2770968b BJ	83	}
94c88dd0	84
2770968b BJ	85	switch(tgetent(termcap, termtype)) {
	86
	87	case 1:
2770968b BJ	88	break;
	89
	90	default:
	91	fprintf(stderr,"trouble reading termcap");
	92	/* fall through to ... */
	93
	94	case 0:
	95	/* No such terminal type - assume dumb */
ac0d117c	96	(void)strcpy(termcap, "dumb:os:col#80:cr=^M:sf=^J:am:");
2770968b BJ	97	break;
2770968b BJ	98	}
94c88dd0 BJ	99	initcap();
	100	if ( (tgetflag("os") && ENTER_BOLD==NULL ) \|\|
	101	(tgetflag("ul") && ENTER_UNDERLINE==NULL && UNDER_CHAR==NULL))
	102	must_overstrike = 1;
94c88dd0 BJ	103	initbuf();
94c88dd0 BJ	104	if (optind == argc)
2770968b	105	filter(stdin);
94c88dd0 BJ	106	else for (; optind<argc; optind++) {
94c88dd0 BJ	107	f = fopen(argv[optind],"r");
2770968b	108	if (f == NULL) {
94c88dd0	109	perror(argv[optind]);
2770968b BJ	110	exit(1);
	111	} else
	112	filter(f);
	113	}
	114	exit(0);
	115	}
	116
	117	filter(f)
	118	FILE *f;
	119	{
94c88dd0	120	register c;
2770968b	121
94c88dd0 BJ	122	while((c = getc(f)) != EOF) switch(c) {
	123
	124	case '\b':
	125	if (col > 0)
	126	col--;
	127	continue;
	128
	129	case '\t':
	130	col = (col+8) & ~07;
	131	if (col > maxcol)
	132	maxcol = col;
	133	continue;
	134
	135	case '\r':
	136	col = 0;
	137	continue;
	138
	139	case SO:
	140	mode \|= ALTSET;
	141	continue;
	142
	143	case SI:
	144	mode &= ~ALTSET;
	145	continue;
	146
	147	case IESC:
	148	switch (c = getc(f)) {
	149
	150	case HREV:
	151	if (halfpos == 0) {
	152	mode \|= SUPERSC;
	153	halfpos--;
	154	} else if (halfpos > 0) {
	155	mode &= ~SUBSC;
	156	halfpos--;
2770968b	157	} else {
94c88dd0 BJ	158	halfpos = 0;
94c88dd0 BJ	159	reverse();
2770968b	160	}
94c88dd0	161	continue;
2770968b	162
94c88dd0 BJ	163	case HFWD:
	164	if (halfpos == 0) {
	165	mode \|= SUBSC;
	166	halfpos++;
	167	} else if (halfpos < 0) {
	168	mode &= ~SUPERSC;
	169	halfpos++;
	170	} else {
	171	halfpos = 0;
	172	fwd();
2770968b	173	}
94c88dd0 BJ	174	continue;
	175
	176	case FREV:
	177	reverse();
	178	continue;
	179
	180	default:
	181	fprintf(stderr,
	182	"Unknown escape sequence in input: %o, %o\n",
	183	IESC, c);
	184	exit(1);
2770968b	185	}
94c88dd0 BJ	186	continue;
	187
	188	case '_':
	189	if (obuf[col].c_char)
	190	obuf[col].c_mode \|= UNDERL \| mode;
	191	else
	192	obuf[col].c_char = '_';
	193	case ' ':
	194	col++;
	195	if (col > maxcol)
	196	maxcol = col;
	197	continue;
	198
	199	case '\n':
	200	flushln();
5041df75	201	continue;
94c88dd0	202
ac0d117c KB	203	case '\f':
	204	flushln();
	205	putchar('\f');
	206	continue;
	207
94c88dd0 BJ	208	default:
	209	if (c < ' ') /* non printing */
	210	continue;
	211	if (obuf[col].c_char == '\0') {
	212	obuf[col].c_char = c;
	213	obuf[col].c_mode = mode;
	214	} else if (obuf[col].c_char == '_') {
	215	obuf[col].c_char = c;
	216	obuf[col].c_mode \|= UNDERL\|mode;
5041df75	217	} else if (obuf[col].c_char == c)
94c88dd0	218	obuf[col].c_mode \|= BOLD\|mode;
eda93319	219	else
5041df75	220	obuf[col].c_mode = mode;
94c88dd0 BJ	221	col++;
	222	if (col > maxcol)
	223	maxcol = col;
	224	continue;
2770968b	225	}
5041df75 RC	226	if (maxcol)
5041df75 RC	227	flushln();
2770968b BJ	228	}
2770968b BJ	229
94c88dd0	230	flushln()
2770968b	231	{
94c88dd0 BJ	232	register lastmode;
	233	register i;
	234	int hadmodes = 0;
	235
	236	lastmode = NORMAL;
	237	for (i=0; i<maxcol; i++) {
	238	if (obuf[i].c_mode != lastmode) {
	239	hadmodes++;
	240	setmode(obuf[i].c_mode);
	241	lastmode = obuf[i].c_mode;
	242	}
	243	if (obuf[i].c_char == '\0') {
	244	if (upln) {
	245	puts(CURS_RIGHT);
	246	} else
	247	outc(' ');
	248	} else
	249	outc(obuf[i].c_char);
	250	}
	251	if (lastmode != NORMAL) {
	252	setmode(0);
	253	}
	254	if (must_overstrike && hadmodes)
	255	overstrike();
	256	putchar('\n');
	257	if (iflag && hadmodes)
	258	iattr();
ac0d117c	259	(void)fflush(stdout);
94c88dd0 BJ	260	if (upln)
	261	upln--;
	262	initbuf();
2770968b BJ	263	}
2770968b BJ	264
94c88dd0 BJ	265	/*
	266	* For terminals that can overstrike, overstrike underlines and bolds.
	267	* We don't do anything with halfline ups and downs, or Greek.
	268	*/
	269	overstrike()
	270	{
	271	register int i;
	272	char lbuf[256];
	273	register char *cp = lbuf;
	274	int hadbold=0;
2770968b	275
94c88dd0 BJ	276	/* Set up overstrike buffer */
	277	for (i=0; i<maxcol; i++)
	278	switch (obuf[i].c_mode) {
	279	case NORMAL:
	280	default:
	281	*cp++ = ' ';
	282	break;
	283	case UNDERL:
	284	*cp++ = '_';
	285	break;
	286	case BOLD:
	287	*cp++ = obuf[i].c_char;
	288	hadbold=1;
	289	break;
	290	}
	291	putchar('\r');
	292	for (cp=' '; cp==' '; cp--)
	293	*cp = 0;
	294	for (cp=lbuf; *cp; cp++)
	295	putchar(*cp);
	296	if (hadbold) {
	297	putchar('\r');
	298	for (cp=lbuf; *cp; cp++)
	299	putchar(cp=='_' ? ' ' : cp);
	300	putchar('\r');
	301	for (cp=lbuf; *cp; cp++)
	302	putchar(cp=='_' ? ' ' : cp);
	303	}
	304	}
2770968b	305
94c88dd0	306	iattr()
2770968b	307	{
94c88dd0 BJ	308	register int i;
	309	char lbuf[256];
	310	register char *cp = lbuf;
2770968b	311
94c88dd0 BJ	312	for (i=0; i<maxcol; i++)
	313	switch (obuf[i].c_mode) {
	314	case NORMAL: *cp++ = ' '; break;
	315	case ALTSET: *cp++ = 'g'; break;
	316	case SUPERSC: *cp++ = '^'; break;
	317	case SUBSC: *cp++ = 'v'; break;
	318	case UNDERL: *cp++ = '_'; break;
	319	case BOLD: *cp++ = '!'; break;
	320	default: *cp++ = 'X'; break;
2770968b	321	}
94c88dd0 BJ	322	for (cp=' '; cp==' '; cp--)
	323	*cp = 0;
	324	for (cp=lbuf; *cp; cp++)
	325	putchar(*cp);
	326	putchar('\n');
2770968b BJ	327	}
2770968b BJ	328
94c88dd0	329	initbuf()
2770968b	330	{
2770968b	331
ac0d117c	332	bzero((char )obuf, sizeof (obuf)); / depends on NORMAL == 0 */
94c88dd0 BJ	333	col = 0;
	334	maxcol = 0;
	335	mode &= ALTSET;
2770968b BJ	336	}
2770968b BJ	337
94c88dd0	338	fwd()
2770968b	339	{
94c88dd0	340	register oldcol, oldmax;
2770968b	341
94c88dd0 BJ	342	oldcol = col;
	343	oldmax = maxcol;
	344	flushln();
	345	col = oldcol;
	346	maxcol = oldmax;
	347	}
	348
	349	reverse()
	350	{
	351	upln++;
	352	fwd();
	353	puts(CURS_UP);
	354	puts(CURS_UP);
	355	upln++;
	356	}
	357
	358	initcap()
	359	{
	360	static char tcapbuf[512];
94c88dd0 BJ	361	char *bp = tcapbuf;
	362	char getenv(), tgetstr();
	363
	364	/* This nonsense attempts to work with both old and new termcap */
	365	CURS_UP = tgetstr("up", &bp);
	366	CURS_RIGHT = tgetstr("ri", &bp);
	367	if (CURS_RIGHT == NULL)
	368	CURS_RIGHT = tgetstr("nd", &bp);
	369	CURS_LEFT = tgetstr("le", &bp);
	370	if (CURS_LEFT == NULL)
	371	CURS_LEFT = tgetstr("bc", &bp);
	372	if (CURS_LEFT == NULL && tgetflag("bs"))
	373	CURS_LEFT = "\b";
	374
	375	ENTER_STANDOUT = tgetstr("so", &bp);
	376	EXIT_STANDOUT = tgetstr("se", &bp);
	377	ENTER_UNDERLINE = tgetstr("us", &bp);
	378	EXIT_UNDERLINE = tgetstr("ue", &bp);
	379	ENTER_DIM = tgetstr("mh", &bp);
	380	ENTER_BOLD = tgetstr("md", &bp);
	381	ENTER_REVERSE = tgetstr("mr", &bp);
	382	EXIT_ATTRIBUTES = tgetstr("me", &bp);
	383
	384	if (!ENTER_BOLD && ENTER_REVERSE)
	385	ENTER_BOLD = ENTER_REVERSE;
	386	if (!ENTER_BOLD && ENTER_STANDOUT)
	387	ENTER_BOLD = ENTER_STANDOUT;
	388	if (!ENTER_UNDERLINE && ENTER_STANDOUT) {
	389	ENTER_UNDERLINE = ENTER_STANDOUT;
	390	EXIT_UNDERLINE = EXIT_STANDOUT;
	391	}
	392	if (!ENTER_DIM && ENTER_STANDOUT)
	393	ENTER_DIM = ENTER_STANDOUT;
	394	if (!ENTER_REVERSE && ENTER_STANDOUT)
	395	ENTER_REVERSE = ENTER_STANDOUT;
	396	if (!EXIT_ATTRIBUTES && EXIT_STANDOUT)
	397	EXIT_ATTRIBUTES = EXIT_STANDOUT;
	398
	399	/*
	400	* Note that we use REVERSE for the alternate character set,
	401	* not the as/ae capabilities. This is because we are modelling
	402	* the model 37 teletype (since that's what nroff outputs) and
	403	* the typical as/ae is more of a graphics set, not the greek
	404	* letters the 37 has.
	405	*/
	406
94c88dd0 BJ	407	UNDER_CHAR = tgetstr("uc", &bp);
	408	must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
	409	}
	410
	411	outchar(c)
	412	char c;
	413	{
	414	putchar(c&0177);
	415	}
	416
	417	puts(str)
	418	char *str;
	419	{
	420	if (str)
	421	tputs(str, 1, outchar);
	422	}
	423
	424	static curmode = 0;
	425	outc(c)
	426	char c;
	427	{
	428	putchar(c);
	429	if (must_use_uc && (curmode&UNDERL)) {
	430	puts(CURS_LEFT);
	431	puts(UNDER_CHAR);
	432	}
	433	}
	434
	435	setmode(newmode)
	436	int newmode;
	437	{
	438	if (!iflag)
a7878ce2 BJ	439	{
	440	if (curmode != NORMAL && newmode != NORMAL)
	441	setmode(NORMAL);
94c88dd0 BJ	442	switch (newmode) {
	443	case NORMAL:
	444	switch(curmode) {
	445	case NORMAL:
2770968b	446	break;
94c88dd0 BJ	447	case UNDERL:
94c88dd0 BJ	448	puts(EXIT_UNDERLINE);
2770968b	449	break;
94c88dd0 BJ	450	default:
	451	/* This includes standout */
	452	puts(EXIT_ATTRIBUTES);
2770968b	453	break;
94c88dd0 BJ	454	}
	455	break;
	456	case ALTSET:
	457	puts(ENTER_REVERSE);
	458	break;
	459	case SUPERSC:
	460	/*
	461	* This only works on a few terminals.
	462	* It should be fixed.
	463	*/
	464	puts(ENTER_UNDERLINE);
	465	puts(ENTER_DIM);
	466	break;
	467	case SUBSC:
	468	puts(ENTER_DIM);
	469	break;
	470	case UNDERL:
	471	puts(ENTER_UNDERLINE);
	472	break;
	473	case BOLD:
	474	puts(ENTER_BOLD);
	475	break;
	476	default:
	477	/*
	478	* We should have some provision here for multiple modes
	479	* on at once. This will have to come later.
	480	*/
	481	puts(ENTER_STANDOUT);
	482	break;
2770968b	483	}
a7878ce2	484	}
94c88dd0 BJ	485	curmode = newmode;
94c88dd0 BJ	486	}