[unix-history] / usr / src / usr.bin / vgrind / vfontedpr.c

#include <ctype.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>

#define boolean int
#define TRUE 1
#define FALSE 0
#define NIL 0
#define STANDARD 0
#define ALTERNATE 1

/*
 * Vfontedpr.
 *
 * Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
 *
 */

#define STRLEN 10		/* length of strings introducing things */
#define PNAMELEN 40		/* length of a function/procedure name */
#define PSMAX 20		/* size of procedure name stacking */

/* regular expression routines */

char	*expmatch();		/* match a string to an expression */
char	*STRNCMP();		/* a different kindof strncmp */
char	*convexp();		/* convert expression to internal form */

boolean	isproc();


char	*ctime();

/*
 *	The state variables
 */

boolean	incomm;			/* in a comment of the primary type */
boolean	instr;			/* in a string constant */
boolean	inchr;			/* in a string constant */
boolean	nokeyw = FALSE;		/* no keywords being flagged */
boolean	index = FALSE;		/* form an index */
boolean filter = FALSE;		/* act as a filter (like eqn) */
boolean pass = FALSE;		/* when acting as a filter, pass indicates
				 * whether we are currently processing
				 * input.
				 */
boolean prccont;		/* continue last procedure */
int	comtype;		/* type of comment */
int	margin;
int	psptr;			/* the stack index of the current procedure */
char	pstack[PSMAX][PNAMELEN+1];	/* the procedure name stack */
int	plstack[PSMAX];		/* the procedure nesting level stack */
int	blklevel;		/* current nesting level */
char	*defsfile = "/usr/lib/vgrindefs";	/* name of language definitions file */
char	pname[BUFSIZ+1];

/*
 *	The language specific globals
 */

char	*language = "c";	/* the language indicator */
char	*l_keywds[BUFSIZ/2];	/* keyword table address */
char	*l_prcbeg;		/* regular expr for procedure begin */
char	*l_combeg;		/* string introducing a comment */
char	*l_comend;		/* string ending a comment */
char	*l_acmbeg;		/* string introducing a comment */
char	*l_acmend;		/* string ending a comment */
char	*l_blkbeg;		/* string begining of a block */
char	*l_blkend;		/* string ending a block */
char    *l_strbeg;		/* delimiter for string constant */
char    *l_strend;		/* delimiter for string constant */
char    *l_chrbeg;		/* delimiter for character constant */
char    *l_chrend;		/* delimiter for character constant */
char	l_escape;		/* character used to  escape characters */
boolean	l_toplex;		/* procedures only defined at top lex level */

/*
 *  global variables also used by expmatch
 */
boolean _escaped;		/* if last character was an escape */
char *_start;			/* start of the current string */
boolean	l_onecase;		/* upper and lower case are equivalent */

#define	ps(x)	printf("%s", x)

main(argc, argv)
    int argc;
    char *argv[];
{
    int lineno;
    char *fname = "";
    char *ptr;
    struct stat stbuf;
    char buf[BUFSIZ];
    char strings[2 * BUFSIZ];
    char defs[2 * BUFSIZ];
    int needbp = 0;

    argc--, argv++;
    do {
	char *cp;
	int i;

	if (argc > 0) {
	    if (!strcmp(argv[0], "-h")) {
		if (argc == 1) {
		    printf("'ds =H\n");
		    argc = 0;
		    goto rest;
		}
		printf("'ds =H %s\n", argv[1]);
		argc--, argv++;
		argc--, argv++;
		if (argc > 0)
		    continue;
		goto rest;
	    }

	    /* act as a filter like eqn */
	    if (!strcmp(argv[0], "-f")) {
		filter++;
		argv[0] = argv[argc-1];
		argv[argc-1] = "-";
		continue;
	    }

	    /* take input from the standard place */
	    if (!strcmp(argv[0], "-")) {
		argc = 0;
		goto rest;
	    }

	    /* build an index */
	    if (!strcmp(argv[0], "-x")) {
		index++;
		argv[0] = "-n";
	    }

	    /* indicate no keywords */
	    if (!strcmp(argv[0], "-n")) {
		nokeyw++;
		argc--, argv++;
		continue;
	    }

	    /* specify the font size */
	    if (!strncmp(argv[0], "-s", 2)) {
		i = 0;
		cp = argv[0] + 2;
		while (*cp)
		    i = i * 10 + (*cp++ - '0');
		printf("'ps %d\n'vs %d\n", i, i+1);
		argc--, argv++;
		continue;
	    }

	    /* specify the language */
	    if (!strncmp(argv[0], "-l", 2)) {
		language = argv[0]+2;
		argc--, argv++;
		continue;
	    }

	    /* specify the language description file */
	    if (!strncmp(argv[0], "-d", 2)) {
		defsfile = argv[1];
		argc--, argv++;
		argc--, argv++;
		continue;
	    }

	    /* open the file for input */
	    if (freopen(argv[0], "r", stdin) == NULL) {
		perror(argv[0]);
		exit(1);
	    }
	    if (index)
		printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
	    fname = argv[0];
	    argc--, argv++;
	}
    rest:

	/*
	 *  get the  language definition from the defs file
	 */
	i = tgetent (defs, language, defsfile);
	if (i == 0) {
	    fprintf (stderr, "no entry for language %s\n", language);
	    exit (0);
	} else  if (i < 0) {
	    fprintf (stderr,  "cannot find vgrindefs file %s\n", defsfile);
	    exit (0);
	}
	cp = strings;
	if (tgetstr ("kw", &cp) == NIL)
	    nokeyw = TRUE;
	else  {
	    char **cpp;

	    cpp = l_keywds;
	    cp = strings;
	    while (*cp) {
		while (*cp == ' ' || *cp =='\t')
		    *cp++ = NULL;
		if (*cp)
		    *cpp++ = cp;
		while (*cp != ' ' && *cp  != '\t' && *cp)
		    cp++;
	    }
	    *cpp = NIL;
	}
	cp = buf;
	l_prcbeg = convexp (tgetstr ("pb", &cp));
	cp = buf;
	l_combeg = convexp (tgetstr ("cb", &cp));
	cp = buf;
	l_comend = convexp (tgetstr ("ce", &cp));
	cp = buf;
	l_acmbeg = convexp (tgetstr ("ab", &cp));
	cp = buf;
	l_acmend = convexp (tgetstr ("ae", &cp));
	cp = buf;
	l_strbeg = convexp (tgetstr ("sb", &cp));
	cp = buf;
	l_strend = convexp (tgetstr ("se", &cp));
	cp = buf;
	l_blkbeg = convexp (tgetstr ("bb", &cp));
	cp = buf;
	l_blkend = convexp (tgetstr ("be", &cp));
	cp = buf;
	l_chrbeg = convexp (tgetstr ("lb", &cp));
	cp = buf;
	l_chrend = convexp (tgetstr ("le", &cp));
	l_escape = '\\';
	l_onecase = tgetflag ("oc");
	l_toplex = tgetflag ("tl");

	/* initialize the program */

	incomm = FALSE;
	instr = FALSE;
	inchr = FALSE;
	_escaped = FALSE;
	blklevel = 0;
	for (psptr=0; psptr<PSMAX; psptr++) {
	    pstack[psptr][0] = NULL;
	    plstack[psptr] = 0;
	}
	psptr = -1;
	ps("'-F\n");
	if (!filter) {
	    printf(".ds =F %s\n", fname);
	    fstat(fileno(stdin), &stbuf);
	    cp = ctime(&stbuf.st_mtime);
	    cp[16] = '\0';
	    cp[24] = '\0';
	    printf(".ds =M %s %s\n", cp+4, cp+20);
	    ps("'wh 0 vH\n");
	    ps("'wh -1i vF\n");
	}
	if (needbp) {
	    needbp = 0;
	    printf(".()\n");
	    printf(".bp\n");
	}

	/*
	 *	MAIN LOOP!!!
	 */
	while (fgets(buf, sizeof buf, stdin) != NULL) {
	    if (buf[0] == '\f') {
		printf(".bp\n");
	    }
	    if (buf[0] == '.') {
		printf("%s", buf);
		if (!strncmp (buf+1, "vS", 2))
		    pass = TRUE;
		if (!strncmp (buf+1, "vE", 2))
		    pass = FALSE;
		continue;
	    }
	    prccont = FALSE;
	    if (!filter || pass)
		putScp(buf);
	    else
		printf("%s", buf);
	    if (prccont && (psptr >= 0)) {
		ps("'FC ");
		ps(pstack[psptr]);
		ps("\n");
	    }
#ifdef DEBUG
	    printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
#endif
	    margin = 0;
	}
	needbp = 1;
    } while (argc > 0);
    exit(0);
}

#define isidchr(c) (isalnum(c) || (c) == '_')

putScp(os)
    char *os;
{
    register char *s = os;		/* pointer to unmatched string */
    char dummy[BUFSIZ];			/* dummy to be used by expmatch */
    char *comptr;			/* end of a comment delimiter */
    char *acmptr;			/* end of a comment delimiter */
    char *strptr;			/* end of a string delimiter */
    char *chrptr;			/* end of a character const delimiter */
    char *blksptr;			/* end of a lexical block start */
    char *blkeptr;			/* end of a lexical block end */

    _start = os;			/* remember the start for expmatch */
    _escaped = FALSE;
    if (nokeyw || incomm || instr)
	goto skip;
    if (isproc(s)) {
	ps("'FN ");
	ps(pname);
        ps("\n");
	if (psptr < PSMAX) {
	    ++psptr;
	    strncpy (pstack[psptr], pname, PNAMELEN);
	    pstack[psptr][PNAMELEN] = NULL;
	    plstack[psptr] = blklevel;
	}
    } 
skip:
    do {
	/* check for string, comment, blockstart, etc */
	if (!incomm && !instr && !inchr) {

	    blkeptr = expmatch (s, l_blkend, dummy);
	    blksptr = expmatch (s, l_blkbeg, dummy);
	    comptr = expmatch (s, l_combeg, dummy);
	    acmptr = expmatch (s, l_acmbeg, dummy);
	    strptr = expmatch (s, l_strbeg, dummy);
	    chrptr = expmatch (s, l_chrbeg, dummy);

	    /* start of a comment? */
	    if (comptr != NIL)
		if ((comptr < strptr || strptr == NIL)
		  && (comptr < acmptr || acmptr == NIL)
		  && (comptr < chrptr || chrptr == NIL)
		  && (comptr < blksptr || blksptr == NIL)
		  && (comptr < blkeptr || blkeptr == NIL)) {
		    putKcp (s, comptr-1, FALSE);
		    s = comptr;
		    incomm = TRUE;
		    comtype = STANDARD;
		    if (s != os)
			ps ("\\c");
		    ps ("\\c\n'+C\n");
		    continue;
		}

	    /* start of a comment? */
	    if (acmptr != NIL)
		if ((acmptr < strptr || strptr == NIL)
		  && (acmptr < chrptr || chrptr == NIL)
		  && (acmptr < blksptr || blksptr == NIL)
		  && (acmptr < blkeptr || blkeptr == NIL)) {
		    putKcp (s, acmptr-1, FALSE);
		    s = acmptr;
		    incomm = TRUE;
		    comtype = ALTERNATE;
		    if (s != os)
			ps ("\\c");
		    ps ("\\c\n'+C\n");
		    continue;
		}

	    /* start of a string? */
	    if (strptr != NIL)
		if ((strptr < chrptr || chrptr == NIL)
		  && (strptr < blksptr || blksptr == NIL)
		  && (strptr < blkeptr || blkeptr == NIL)) {
		    putKcp (s, strptr-1, FALSE);
		    s = strptr;
		    instr = TRUE;
		    continue;
		}

	    /* start of a character string? */
	    if (chrptr != NIL)
		if ((chrptr < blksptr || blksptr == NIL)
		  && (chrptr < blkeptr || blkeptr == NIL)) {
		    putKcp (s, chrptr-1, FALSE);
		    s = chrptr;
		    inchr = TRUE;
		    continue;
		}

	    /* end of a lexical block */
	    if (blkeptr != NIL) {
		if (blkeptr < blksptr || blksptr == NIL) {
		    putKcp (s, blkeptr - 1, FALSE);
		    s = blkeptr;
		    blklevel--;
		    if (psptr >= 0 && plstack[psptr] >= blklevel) {

			/* end of current procedure */
			if (s != os)
			    ps ("\\c");
			ps ("\\c\n'-F\n");
			blklevel = plstack[psptr];

			/* see if we should print the last proc name */
			if (--psptr >= 0)
			    prccont = TRUE;
			else
			    psptr = -1;
		    }
		    continue;
		}
	    }

	    /* start of a lexical block */
	    if (blksptr != NIL) {
		putKcp (s, blksptr - 1, FALSE);
		s = blksptr;
		blklevel++;
		continue;
	    }

	/* check for end of comment */
	} else if (incomm) {
	    comptr = expmatch (s, l_comend, dummy);
	    acmptr = expmatch (s, l_acmend, dummy);
	    if (((comtype == STANDARD) && (comptr != NIL)) ||
	        ((comtype == ALTERNATE) && (acmptr != NIL))) {
		if (comtype == STANDARD) {
		    putKcp (s, comptr-1, TRUE);
		    s = comptr;
		} else {
		    putKcp (s, acmptr-1, TRUE);
		    s = acmptr;
		}
		incomm = FALSE;
		ps("\\c\n'-C\n");
		continue;
	    } else {
		putKcp (s, s + strlen(s) -1);
		s = s + strlen(s);
		continue;
	    }

	/* check for end of string */
	} else if (instr) {
	    if ((strptr = expmatch (s, l_strend, dummy)) != NIL) {
		putKcp (s, strptr-1, TRUE);
		s = strptr;
		instr = FALSE;
		continue;
	    } else {
		putKcp (s, s+strlen(s)-1, TRUE);
		s = s + strlen(s);
		continue;
	    }

	/* check for end of character string */
	} else if (inchr) {
	    if ((chrptr = expmatch (s, l_chrend, dummy)) != NIL) {
		putKcp (s, chrptr-1, TRUE);
		s = chrptr;
		inchr = FALSE;
		continue;
	    } else {
		putKcp (s, s+strlen(s)-1, TRUE);
		s = s + strlen(s);
		continue;
	    }
	}

	/* print out the line */
	putKcp (s, s + strlen(s) -1, FALSE);
	s = s + strlen(s);
    } while (*s);
}

putKcp (start, end, force)
    char	*start;		/* start of string to write */
    char	*end;		/* end of string to write */
    boolean	force;		/* true if we should force nokeyw */
{
    int i;
    int xfld = 0;

    while (start <= end) {
	if (index) {
	    if (*start == ' ' || *start == '\t') {
		if (xfld == 0)	
		    printf("\ 1");
		printf("\t");
		xfld = 1;
		while (*start == ' ' || *start == '\t')
		    start++;
		continue;
	    }
	}

	/* take care of nice tab stops */
	if (*start == '\t') {
	    while (*start == '\t')
		start++;
	    i = tabs(_start, start) - margin / 8;
	    printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
	    continue;
	}

	if (!nokeyw && !force)
	    if ((*start == '#' || isidchr(*start)) 
	    && (start == _start || !isidchr(start[-1]))) {
		i = iskw(start);
		if (i > 0) {
		    ps("\\*(+K");
		    do 
			putcp(*start++);
		    while (--i > 0);
		    ps("\\*(-K");
		    continue;
		}
	    }

	putcp (*start++);
    }
}


tabs(s, os)
    char *s, *os;
{

    return (width(s, os) / 8);
}

width(s, os)
	register char *s, *os;
{
	register int i = 0;

	while (s < os) {
		if (*s == '\t') {
			i = (i + 8) &~ 7;
			s++;
			continue;
		}
		if (*s < ' ')
			i += 2;
		else
			i++;
		s++;
	}
	return (i);
}

putcp(c)
	register int c;
{

	switch(c) {

	case 0:
		break;

	case '\f':
		break;

	case '{':
		ps("\\*(+K{\\*(-K");
		break;

	case '}':
		ps("\\*(+K}\\*(-K");
		break;

	case '\\':
		ps("\\e");
		break;

	case '_':
		ps("\\*_");
		break;

	case '-':
		ps("\\*-");
		break;

	case '`':
		ps("\\`");
		break;

	case '\'':
		ps("\\'");
		break;

	case '.':
		ps("\\&.");
		break;

	case '*':
		ps("\\fI*\\fP");
		break;

	case '/':
		ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
		break;

	default:
		if (c < 040)
			putchar('^'), c |= '@';
	case '\t':
	case '\n':
		putchar(c);
	}
}

/*
 *	look for a process beginning on this line
 */
boolean
isproc(s)
    char *s;
{
    pname[0] = NULL;
    if (!l_toplex || blklevel == 0)
	if (expmatch (s, l_prcbeg, pname) != NIL) {
	    return (TRUE);
	}
    return (FALSE);
}


/*  iskw -	check to see if the next word is a keyword
 */

iskw(s)
	register char *s;
{
	register char **ss = l_keywds;
	register int i = 1;
	register char *cp = s;

	while (++cp, isidchr(*cp))
		i++;
	while (cp = *ss++)
		if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
			return (i);
	return (0);
}
Commit	Line	Data
0b79a041 BJ	1	#include <ctype.h>
	2	#include <stdio.h>
	3	#include <sys/types.h>
	4	#include <sys/stat.h>
	5
a388f2af BJ	6	#define boolean int
	7	#define TRUE 1
	8	#define FALSE 0
	9	#define NIL 0
d72dd43f DP	10	#define STANDARD 0
d72dd43f DP	11	#define ALTERNATE 1
a388f2af	12
0b79a041 BJ	13	/*
	14	* Vfontedpr.
	15	*
a388f2af	16	* Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
f5fa559c BJ	17	*
f5fa559c BJ	18	*/
f5fa559c BJ	19
	20	#define STRLEN 10 /* length of strings introducing things */
	21	#define PNAMELEN 40 /* length of a function/procedure name */
a388f2af	22	#define PSMAX 20 /* size of procedure name stacking */
f5fa559c	23
a388f2af	24	/* regular expression routines */
b48967e6	25
a388f2af BJ	26	char expmatch(); / match a string to an expression */
	27	char STRNCMP(); / a different kindof strncmp */
	28	char convexp(); / convert expression to internal form */
	29
	30	boolean isproc();
f5fa559c	31
f5fa559c	32
0b79a041	33	char *ctime();
a388f2af BJ	34
	35	/*
	36	* The state variables
	37	*/
	38
	39	boolean incomm; /* in a comment of the primary type */
	40	boolean instr; /* in a string constant */
	41	boolean inchr; /* in a string constant */
	42	boolean nokeyw = FALSE; /* no keywords being flagged */
	43	boolean index = FALSE; /* form an index */
	44	boolean filter = FALSE; /* act as a filter (like eqn) */
	45	boolean pass = FALSE; /* when acting as a filter, pass indicates
	46	* whether we are currently processing
	47	* input.
	48	*/
	49	boolean prccont; /* continue last procedure */
d72dd43f	50	int comtype; /* type of comment */
0b79a041	51	int margin;
a388f2af BJ	52	int psptr; /* the stack index of the current procedure */
	53	char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
	54	int plstack[PSMAX]; /* the procedure nesting level stack */
	55	int blklevel; /* current nesting level */
	56	char defsfile = "/usr/lib/vgrindefs"; / name of language definitions file */
	57	char pname[BUFSIZ+1];
b48967e6	58
a388f2af BJ	59	/*
	60	* The language specific globals
	61	*/
	62
	63	char language = "c"; / the language indicator */
	64	char l_keywds[BUFSIZ/2]; / keyword table address */
	65	char l_prcbeg; / regular expr for procedure begin */
	66	char l_combeg; / string introducing a comment */
	67	char l_comend; / string ending a comment */
d72dd43f DP	68	char l_acmbeg; / string introducing a comment */
d72dd43f DP	69	char l_acmend; / string ending a comment */
a388f2af BJ	70	char l_blkbeg; / string begining of a block */
	71	char l_blkend; / string ending a block */
	72	char l_strbeg; / delimiter for string constant */
	73	char l_strend; / delimiter for string constant */
	74	char l_chrbeg; / delimiter for character constant */
	75	char l_chrend; / delimiter for character constant */
	76	char l_escape; /* character used to escape characters */
	77	boolean l_toplex; /* procedures only defined at top lex level */
	78
	79	/*
	80	* global variables also used by expmatch
	81	*/
	82	boolean _escaped; /* if last character was an escape */
	83	char _start; / start of the current string */
	84	boolean l_onecase; /* upper and lower case are equivalent */
f5fa559c BJ	85
f5fa559c BJ	86	#define ps(x) printf("%s", x)
0b79a041 BJ	87
0b79a041 BJ	88	main(argc, argv)
a388f2af BJ	89	int argc;
a388f2af BJ	90	char *argv[];
0b79a041	91	{
a388f2af BJ	92	int lineno;
	93	char *fname = "";
	94	char *ptr;
	95	struct stat stbuf;
	96	char buf[BUFSIZ];
	97	char strings[2 * BUFSIZ];
	98	char defs[2 * BUFSIZ];
	99	int needbp = 0;
	100
	101	argc--, argv++;
	102	do {
	103	char *cp;
	104	int i;
	105
	106	if (argc > 0) {
	107	if (!strcmp(argv[0], "-h")) {
	108	if (argc == 1) {
	109	printf("'ds =H\n");
	110	argc = 0;
	111	goto rest;
0b79a041	112	}
a388f2af	113	printf("'ds =H %s\n", argv[1]);
91146c92 DP	114	argc--, argv++;
91146c92 DP	115	argc--, argv++;
a388f2af BJ	116	if (argc > 0)
	117	continue;
	118	goto rest;
	119	}
	120
	121	/* act as a filter like eqn */
	122	if (!strcmp(argv[0], "-f")) {
	123	filter++;
	124	argv[0] = argv[argc-1];
	125	argv[argc-1] = "-";
	126	continue;
	127	}
	128
	129	/* take input from the standard place */
	130	if (!strcmp(argv[0], "-")) {
	131	argc = 0;
	132	goto rest;
	133	}
	134
	135	/* build an index */
	136	if (!strcmp(argv[0], "-x")) {
	137	index++;
	138	argv[0] = "-n";
	139	}
	140
	141	/* indicate no keywords */
	142	if (!strcmp(argv[0], "-n")) {
	143	nokeyw++;
	144	argc--, argv++;
	145	continue;
	146	}
	147
	148	/* specify the font size */
	149	if (!strncmp(argv[0], "-s", 2)) {
	150	i = 0;
	151	cp = argv[0] + 2;
	152	while (*cp)
	153	i = i * 10 + (*cp++ - '0');
	154	printf("'ps %d\n'vs %d\n", i, i+1);
	155	argc--, argv++;
	156	continue;
	157	}
	158
	159	/* specify the language */
	160	if (!strncmp(argv[0], "-l", 2)) {
	161	language = argv[0]+2;
	162	argc--, argv++;
	163	continue;
	164	}
	165
	166	/* specify the language description file */
	167	if (!strncmp(argv[0], "-d", 2)) {
	168	defsfile = argv[1];
	169	argc--, argv++;
	170	argc--, argv++;
	171	continue;
	172	}
	173
	174	/* open the file for input */
	175	if (freopen(argv[0], "r", stdin) == NULL) {
	176	perror(argv[0]);
	177	exit(1);
	178	}
	179	if (index)
180	printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
181	fname = argv[0];
182	argc--, argv++;
183	}
184	rest:
185
186	/*
187	* get the language definition from the defs file
188	*/
189	i = tgetent (defs, language, defsfile);
190	if (i == 0) {
191	fprintf (stderr, "no entry for language %s\n", language);
192	exit (0);
193	} else if (i < 0) {
194	fprintf (stderr, "cannot find vgrindefs file %s\n", defsfile);
195	exit (0);
196	}
197	cp = strings;
198	if (tgetstr ("kw", &cp) == NIL)
199	nokeyw = TRUE;
200	else {
201	char **cpp;
202
203	cpp = l_keywds;
204	cp = strings;
205	while (*cp) {
206	while (cp == ' ' \|\| cp =='\t')
207	*cp++ = NULL;
208	if (*cp)
209	*cpp++ = cp;
210	while (cp != ' ' && cp != '\t' && *cp)
211	cp++;
212	}
213	*cpp = NIL;
214	}
215	cp = buf;
216	l_prcbeg = convexp (tgetstr ("pb", &cp));
217	cp = buf;
218	l_combeg = convexp (tgetstr ("cb", &cp));
219	cp = buf;
220	l_comend = convexp (tgetstr ("ce", &cp));
221	cp = buf;
d72dd43f DP	222	l_acmbeg = convexp (tgetstr ("ab", &cp));
	223	cp = buf;
	224	l_acmend = convexp (tgetstr ("ae", &cp));
	225	cp = buf;
a388f2af BJ	226	l_strbeg = convexp (tgetstr ("sb", &cp));
	227	cp = buf;
	228	l_strend = convexp (tgetstr ("se", &cp));
	229	cp = buf;
	230	l_blkbeg = convexp (tgetstr ("bb", &cp));
	231	cp = buf;
	232	l_blkend = convexp (tgetstr ("be", &cp));
	233	cp = buf;
	234	l_chrbeg = convexp (tgetstr ("lb", &cp));
	235	cp = buf;
	236	l_chrend = convexp (tgetstr ("le", &cp));
	237	l_escape = '\\';
	238	l_onecase = tgetflag ("oc");
	239	l_toplex = tgetflag ("tl");
d72dd43f	240
a388f2af BJ	241	/* initialize the program */
	242
	243	incomm = FALSE;
	244	instr = FALSE;
	245	inchr = FALSE;
	246	_escaped = FALSE;
	247	blklevel = 0;
	248	for (psptr=0; psptr<PSMAX; psptr++) {
	249	pstack[psptr][0] = NULL;
	250	plstack[psptr] = 0;
	251	}
	252	psptr = -1;
	253	ps("'-F\n");
	254	if (!filter) {
	255	printf(".ds =F %s\n", fname);
	256	fstat(fileno(stdin), &stbuf);
	257	cp = ctime(&stbuf.st_mtime);
	258	cp[16] = '\0';
	259	cp[24] = '\0';
	260	printf(".ds =M %s %s\n", cp+4, cp+20);
91146c92 DP	261	ps("'wh 0 vH\n");
91146c92 DP	262	ps("'wh -1i vF\n");
a388f2af BJ	263	}
	264	if (needbp) {
	265	needbp = 0;
	266	printf(".()\n");
	267	printf(".bp\n");
	268	}
	269
	270	/*
	271	* MAIN LOOP!!!
	272	*/
	273	while (fgets(buf, sizeof buf, stdin) != NULL) {
	274	if (buf[0] == '\f') {
	275	printf(".bp\n");
	276	}
	277	if (buf[0] == '.') {
	278	printf("%s", buf);
	279	if (!strncmp (buf+1, "vS", 2))
	280	pass = TRUE;
	281	if (!strncmp (buf+1, "vE", 2))
	282	pass = FALSE;
	283	continue;
	284	}
	285	prccont = FALSE;
	286	if (!filter \|\| pass)
	287	putScp(buf);
	288	else
	289	printf("%s", buf);
	290	if (prccont && (psptr >= 0)) {
	291	ps("'FC ");
	292	ps(pstack[psptr]);
	293	ps("\n");
	294	}
	295	#ifdef DEBUG
	296	printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
	297	#endif
	298	margin = 0;
	299	}
	300	needbp = 1;
	301	} while (argc > 0);
	302	exit(0);
0b79a041 BJ	303	}
0b79a041 BJ	304
0b79a041 BJ	305	#define isidchr(c) (isalnum(c) \|\| (c) == '_')
	306
	307	putScp(os)
a388f2af	308	char *os;
0b79a041	309	{
a388f2af BJ	310	register char s = os; / pointer to unmatched string */
a388f2af BJ	311	char dummy[BUFSIZ]; /* dummy to be used by expmatch */
a388f2af	312	char comptr; / end of a comment delimiter */
d72dd43f	313	char acmptr; / end of a comment delimiter */
a388f2af BJ	314	char strptr; / end of a string delimiter */
	315	char chrptr; / end of a character const delimiter */
	316	char blksptr; / end of a lexical block start */
	317	char blkeptr; / end of a lexical block end */
	318
	319	_start = os; /* remember the start for expmatch */
	320	_escaped = FALSE;
	321	if (nokeyw \|\| incomm \|\| instr)
	322	goto skip;
	323	if (isproc(s)) {
	324	ps("'FN ");
	325	ps(pname);
09aabb70	326	ps("\n");
a388f2af BJ	327	if (psptr < PSMAX) {
	328	++psptr;
	329	strncpy (pstack[psptr], pname, PNAMELEN);
	330	pstack[psptr][PNAMELEN] = NULL;
a388f2af BJ	331	plstack[psptr] = blklevel;
	332	}
	333	}
0b79a041	334	skip:
a388f2af	335	do {
a388f2af BJ	336	/* check for string, comment, blockstart, etc */
	337	if (!incomm && !instr && !inchr) {
	338
	339	blkeptr = expmatch (s, l_blkend, dummy);
	340	blksptr = expmatch (s, l_blkbeg, dummy);
	341	comptr = expmatch (s, l_combeg, dummy);
d72dd43f	342	acmptr = expmatch (s, l_acmbeg, dummy);
a388f2af BJ	343	strptr = expmatch (s, l_strbeg, dummy);
	344	chrptr = expmatch (s, l_chrbeg, dummy);
	345
	346	/* start of a comment? */
	347	if (comptr != NIL)
	348	if ((comptr < strptr \|\| strptr == NIL)
d72dd43f	349	&& (comptr < acmptr \|\| acmptr == NIL)
a388f2af BJ	350	&& (comptr < chrptr \|\| chrptr == NIL)
	351	&& (comptr < blksptr \|\| blksptr == NIL)
	352	&& (comptr < blkeptr \|\| blkeptr == NIL)) {
	353	putKcp (s, comptr-1, FALSE);
	354	s = comptr;
	355	incomm = TRUE;
d72dd43f DP	356	comtype = STANDARD;
	357	if (s != os)
	358	ps ("\\c");
	359	ps ("\\c\n'+C\n");
	360	continue;
	361	}
	362
	363	/* start of a comment? */
	364	if (acmptr != NIL)
	365	if ((acmptr < strptr \|\| strptr == NIL)
	366	&& (acmptr < chrptr \|\| chrptr == NIL)
	367	&& (acmptr < blksptr \|\| blksptr == NIL)
	368	&& (acmptr < blkeptr \|\| blkeptr == NIL)) {
	369	putKcp (s, acmptr-1, FALSE);
	370	s = acmptr;
	371	incomm = TRUE;
	372	comtype = ALTERNATE;
a388f2af BJ	373	if (s != os)
	374	ps ("\\c");
	375	ps ("\\c\n'+C\n");
	376	continue;
cca8d17e	377	}
a388f2af BJ	378
	379	/* start of a string? */
	380	if (strptr != NIL)
	381	if ((strptr < chrptr \|\| chrptr == NIL)
d81ba424 BJ	382	&& (strptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	383	&& (strptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	384	putKcp (s, strptr-1, FALSE);
	385	s = strptr;
	386	instr = TRUE;
	387	continue;
0b79a041	388	}
b48967e6	389
a388f2af BJ	390	/* start of a character string? */
a388f2af BJ	391	if (chrptr != NIL)
d81ba424 BJ	392	if ((chrptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	393	&& (chrptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	394	putKcp (s, chrptr-1, FALSE);
	395	s = chrptr;
	396	inchr = TRUE;
	397	continue;
0b79a041	398	}
b48967e6	399
a388f2af BJ	400	/* end of a lexical block */
	401	if (blkeptr != NIL) {
	402	if (blkeptr < blksptr \|\| blksptr == NIL) {
	403	putKcp (s, blkeptr - 1, FALSE);
	404	s = blkeptr;
	405	blklevel--;
	406	if (psptr >= 0 && plstack[psptr] >= blklevel) {
b48967e6	407
a388f2af	408	/* end of current procedure */
b48967e6	409	if (s != os)
a388f2af BJ	410	ps ("\\c");
	411	ps ("\\c\n'-F\n");
	412	blklevel = plstack[psptr];
	413
	414	/* see if we should print the last proc name */
	415	if (--psptr >= 0)
	416	prccont = TRUE;
	417	else
	418	psptr = -1;
	419	}
	420	continue;
0b79a041	421	}
a388f2af	422	}
b48967e6	423
a388f2af BJ	424	/* start of a lexical block */
	425	if (blksptr != NIL) {
	426	putKcp (s, blksptr - 1, FALSE);
	427	s = blksptr;
	428	blklevel++;
	429	continue;
	430	}
	431
	432	/* check for end of comment */
	433	} else if (incomm) {
d72dd43f DP	434	comptr = expmatch (s, l_comend, dummy);
	435	acmptr = expmatch (s, l_acmend, dummy);
	436	if (((comtype == STANDARD) && (comptr != NIL)) \|\|
	437	((comtype == ALTERNATE) && (acmptr != NIL))) {
	438	if (comtype == STANDARD) {
	439	putKcp (s, comptr-1, TRUE);
	440	s = comptr;
	441	} else {
	442	putKcp (s, acmptr-1, TRUE);
	443	s = acmptr;
	444	}
a388f2af BJ	445	incomm = FALSE;
	446	ps("\\c\n'-C\n");
	447	continue;
	448	} else {
	449	putKcp (s, s + strlen(s) -1);
	450	s = s + strlen(s);
	451	continue;
	452	}
	453
	454	/* check for end of string */
	455	} else if (instr) {
	456	if ((strptr = expmatch (s, l_strend, dummy)) != NIL) {
	457	putKcp (s, strptr-1, TRUE);
	458	s = strptr;
	459	instr = FALSE;
	460	continue;
	461	} else {
	462	putKcp (s, s+strlen(s)-1, TRUE);
	463	s = s + strlen(s);
	464	continue;
	465	}
	466
	467	/* check for end of character string */
	468	} else if (inchr) {
	469	if ((chrptr = expmatch (s, l_chrend, dummy)) != NIL) {
	470	putKcp (s, chrptr-1, TRUE);
	471	s = chrptr;
	472	inchr = FALSE;
	473	continue;
	474	} else {
	475	putKcp (s, s+strlen(s)-1, TRUE);
	476	s = s + strlen(s);
	477	continue;
	478	}
0b79a041	479	}
a388f2af BJ	480
	481	/* print out the line */
	482	putKcp (s, s + strlen(s) -1, FALSE);
	483	s = s + strlen(s);
	484	} while (*s);
0b79a041 BJ	485	}
0b79a041 BJ	486
a388f2af BJ	487	putKcp (start, end, force)
	488	char start; / start of string to write */
	489	char end; / end of string to write */
	490	boolean force; /* true if we should force nokeyw */
	491	{
	492	int i;
d22f197f	493	int xfld = 0;
a388f2af BJ	494
a388f2af BJ	495	while (start <= end) {
d22f197f BJ	496	if (index) {
	497	if (start == ' ' \|\| start == '\t') {
	498	if (xfld == 0)
	499	printf("\ 1");
	500	printf("\t");
	501	xfld = 1;
	502	while (start == ' ' \|\| start == '\t')
	503	start++;
	504	continue;
	505	}
	506	}
a388f2af BJ	507
	508	/* take care of nice tab stops */
	509	if (*start == '\t') {
	510	while (*start == '\t')
	511	start++;
	512	i = tabs(_start, start) - margin / 8;
	513	printf("\\h'\|%dn'", i * 10 + 1 - margin % 8);
	514	continue;
	515	}
	516
	517	if (!nokeyw && !force)
	518	if ((start == '#' \|\| isidchr(start))
	519	&& (start == _start \|\| !isidchr(start[-1]))) {
	520	i = iskw(start);
	521	if (i > 0) {
	522	ps("\\*(+K");
	523	do
	524	putcp(*start++);
	525	while (--i > 0);
	526	ps("\\*(-K");
	527	continue;
	528	}
	529	}
	530
	531	putcp (*start++);
	532	}
	533	}
	534
	535
0b79a041	536	tabs(s, os)
a388f2af	537	char s, os;
0b79a041 BJ	538	{
0b79a041 BJ	539
a388f2af	540	return (width(s, os) / 8);
0b79a041 BJ	541	}
	542
	543	width(s, os)
	544	register char s, os;
	545	{
	546	register int i = 0;
	547
	548	while (s < os) {
	549	if (*s == '\t') {
	550	i = (i + 8) &~ 7;
	551	s++;
	552	continue;
	553	}
	554	if (*s < ' ')
	555	i += 2;
	556	else
	557	i++;
	558	s++;
	559	}
	560	return (i);
	561	}
	562
	563	putcp(c)
	564	register int c;
	565	{
	566
	567	switch(c) {
	568
a388f2af BJ	569	case 0:
	570	break;
	571
	572	case '\f':
	573	break;
	574
0b79a041 BJ	575	case '{':
	576	ps("\\(+K{\\(-K");
	577	break;
	578
	579	case '}':
	580	ps("\\(+K}\\(-K");
	581	break;
	582
	583	case '\\':
	584	ps("\\e");
	585	break;
	586
	587	case '_':
	588	ps("\\*_");
	589	break;
	590
	591	case '-':
	592	ps("\\*-");
	593	break;
	594
	595	case '`':
	596	ps("\\`");
	597	break;
	598
	599	case '\'':
	600	ps("\\'");
	601	break;
	602
	603	case '.':
	604	ps("\\&.");
	605	break;
	606
341765b5 BJ	607	case '*':
	608	ps("\\fI*\\fP");
	609	break;
	610
a388f2af	611	case '/':
341765b5	612	ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
a388f2af BJ	613	break;
a388f2af BJ	614
0b79a041 BJ	615	default:
	616	if (c < 040)
	617	putchar('^'), c \|= '@';
	618	case '\t':
	619	case '\n':
	620	putchar(c);
	621	}
	622	}
	623
a388f2af BJ	624	/*
a388f2af BJ	625	* look for a process beginning on this line
b48967e6	626	*/
a388f2af BJ	627	boolean
	628	isproc(s)
	629	char *s;
b48967e6	630	{
a388f2af BJ	631	pname[0] = NULL;
	632	if (!l_toplex \|\| blklevel == 0)
	633	if (expmatch (s, l_prcbeg, pname) != NIL) {
	634	return (TRUE);
	635	}
	636	return (FALSE);
b48967e6 BJ	637	}
b48967e6 BJ	638
a388f2af	639
b48967e6 BJ	640	/* iskw - check to see if the next word is a keyword
	641	*/
	642
0b79a041 BJ	643	iskw(s)
	644	register char *s;
	645	{
a388f2af	646	register char **ss = l_keywds;
0b79a041 BJ	647	register int i = 1;
	648	register char *cp = s;
	649
	650	while (++cp, isidchr(*cp))
	651	i++;
	652	while (cp = *ss++)
a388f2af	653	if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
0b79a041 BJ	654	return (i);
	655	return (0);
	656	}