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

/*
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

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

#ifndef lint
static char sccsid[] = "@(#)vfontedpr.c	5.3 (Berkeley) %G%";
#endif /* not lint */

#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 */
char	*tgetstr();

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);
	    ps("'wh 0 vH\n");
	    ps("'wh -1i vF\n");
	}
	if (needbp) {
	    needbp = 0;
	    printf(".()\n");
	    printf(".bp\n");
	}
	if (!filter) {
	    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);
	}

	/*
	 *	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, TRUE);
		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
76797561	1	/*
616af90a KB	2	* Copyright (c) 1980 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
76797561 DF	16	*/
	17
	18	#ifndef lint
616af90a KB	19	char copyright[] =
	20	"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
	21	All rights reserved.\n";
	22	#endif /* not lint */
	23
	24	#ifndef lint
	25	static char sccsid[] = "@(#)vfontedpr.c 5.3 (Berkeley) %G%";
	26	#endif /* not lint */
edd148a9	27
0b79a041 BJ	28	#include <ctype.h>
	29	#include <stdio.h>
	30	#include <sys/types.h>
	31	#include <sys/stat.h>
	32
a388f2af BJ	33	#define boolean int
	34	#define TRUE 1
	35	#define FALSE 0
	36	#define NIL 0
d72dd43f DP	37	#define STANDARD 0
d72dd43f DP	38	#define ALTERNATE 1
a388f2af	39
0b79a041 BJ	40	/*
	41	* Vfontedpr.
	42	*
a388f2af	43	* Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
f5fa559c BJ	44	*
f5fa559c BJ	45	*/
f5fa559c BJ	46
	47	#define STRLEN 10 /* length of strings introducing things */
	48	#define PNAMELEN 40 /* length of a function/procedure name */
a388f2af	49	#define PSMAX 20 /* size of procedure name stacking */
f5fa559c	50
a388f2af	51	/* regular expression routines */
b48967e6	52
a388f2af BJ	53	char expmatch(); / match a string to an expression */
	54	char STRNCMP(); / a different kindof strncmp */
	55	char convexp(); / convert expression to internal form */
1a8c1b81	56	char *tgetstr();
a388f2af BJ	57
a388f2af BJ	58	boolean isproc();
f5fa559c	59
f5fa559c	60
0b79a041	61	char *ctime();
a388f2af BJ	62
	63	/*
	64	* The state variables
	65	*/
	66
	67	boolean incomm; /* in a comment of the primary type */
	68	boolean instr; /* in a string constant */
	69	boolean inchr; /* in a string constant */
	70	boolean nokeyw = FALSE; /* no keywords being flagged */
	71	boolean index = FALSE; /* form an index */
	72	boolean filter = FALSE; /* act as a filter (like eqn) */
	73	boolean pass = FALSE; /* when acting as a filter, pass indicates
	74	* whether we are currently processing
	75	* input.
	76	*/
	77	boolean prccont; /* continue last procedure */
d72dd43f	78	int comtype; /* type of comment */
0b79a041	79	int margin;
a388f2af BJ	80	int psptr; /* the stack index of the current procedure */
	81	char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
	82	int plstack[PSMAX]; /* the procedure nesting level stack */
	83	int blklevel; /* current nesting level */
	84	char defsfile = "/usr/lib/vgrindefs"; / name of language definitions file */
	85	char pname[BUFSIZ+1];
b48967e6	86
a388f2af BJ	87	/*
	88	* The language specific globals
	89	*/
	90
	91	char language = "c"; / the language indicator */
	92	char l_keywds[BUFSIZ/2]; / keyword table address */
	93	char l_prcbeg; / regular expr for procedure begin */
	94	char l_combeg; / string introducing a comment */
	95	char l_comend; / string ending a comment */
d72dd43f DP	96	char l_acmbeg; / string introducing a comment */
d72dd43f DP	97	char l_acmend; / string ending a comment */
a388f2af BJ	98	char l_blkbeg; / string begining of a block */
	99	char l_blkend; / string ending a block */
	100	char l_strbeg; / delimiter for string constant */
	101	char l_strend; / delimiter for string constant */
	102	char l_chrbeg; / delimiter for character constant */
	103	char l_chrend; / delimiter for character constant */
	104	char l_escape; /* character used to escape characters */
	105	boolean l_toplex; /* procedures only defined at top lex level */
	106
	107	/*
	108	* global variables also used by expmatch
	109	*/
	110	boolean _escaped; /* if last character was an escape */
	111	char _start; / start of the current string */
	112	boolean l_onecase; /* upper and lower case are equivalent */
f5fa559c BJ	113
f5fa559c BJ	114	#define ps(x) printf("%s", x)
0b79a041 BJ	115
0b79a041 BJ	116	main(argc, argv)
a388f2af BJ	117	int argc;
a388f2af BJ	118	char *argv[];
0b79a041	119	{
a388f2af BJ	120	int lineno;
	121	char *fname = "";
	122	char *ptr;
	123	struct stat stbuf;
	124	char buf[BUFSIZ];
	125	char strings[2 * BUFSIZ];
	126	char defs[2 * BUFSIZ];
	127	int needbp = 0;
	128
	129	argc--, argv++;
	130	do {
	131	char *cp;
	132	int i;
	133
	134	if (argc > 0) {
	135	if (!strcmp(argv[0], "-h")) {
	136	if (argc == 1) {
	137	printf("'ds =H\n");
	138	argc = 0;
	139	goto rest;
0b79a041	140	}
a388f2af	141	printf("'ds =H %s\n", argv[1]);
91146c92 DP	142	argc--, argv++;
91146c92 DP	143	argc--, argv++;
a388f2af BJ	144	if (argc > 0)
	145	continue;
	146	goto rest;
	147	}
	148
	149	/* act as a filter like eqn */
	150	if (!strcmp(argv[0], "-f")) {
	151	filter++;
	152	argv[0] = argv[argc-1];
	153	argv[argc-1] = "-";
	154	continue;
	155	}
	156
	157	/* take input from the standard place */
	158	if (!strcmp(argv[0], "-")) {
	159	argc = 0;
	160	goto rest;
	161	}
	162
	163	/* build an index */
	164	if (!strcmp(argv[0], "-x")) {
	165	index++;
	166	argv[0] = "-n";
	167	}
	168
	169	/* indicate no keywords */
	170	if (!strcmp(argv[0], "-n")) {
	171	nokeyw++;
	172	argc--, argv++;
	173	continue;
	174	}
	175
	176	/* specify the font size */
	177	if (!strncmp(argv[0], "-s", 2)) {
	178	i = 0;
	179	cp = argv[0] + 2;
	180	while (*cp)
	181	i = i * 10 + (*cp++ - '0');
	182	printf("'ps %d\n'vs %d\n", i, i+1);
	183	argc--, argv++;
	184	continue;
	185	}
	186
	187	/* specify the language */
	188	if (!strncmp(argv[0], "-l", 2)) {
	189	language = argv[0]+2;
	190	argc--, argv++;
	191	continue;
	192	}
	193
	194	/* specify the language description file */
	195	if (!strncmp(argv[0], "-d", 2)) {
	196	defsfile = argv[1];
	197	argc--, argv++;
	198	argc--, argv++;
	199	continue;
	200	}
	201
	202	/* open the file for input */
	203	if (freopen(argv[0], "r", stdin) == NULL) {
	204	perror(argv[0]);
	205	exit(1);
	206	}
	207	if (index)
208	printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
209	fname = argv[0];
210	argc--, argv++;
211	}
212	rest:
213
214	/*
215	* get the language definition from the defs file
216	*/
217	i = tgetent (defs, language, defsfile);
218	if (i == 0) {
219	fprintf (stderr, "no entry for language %s\n", language);
220	exit (0);
221	} else if (i < 0) {
222	fprintf (stderr, "cannot find vgrindefs file %s\n", defsfile);
223	exit (0);
224	}
225	cp = strings;
226	if (tgetstr ("kw", &cp) == NIL)
227	nokeyw = TRUE;
228	else {
229	char **cpp;
230
231	cpp = l_keywds;
232	cp = strings;
233	while (*cp) {
234	while (cp == ' ' \|\| cp =='\t')
235	*cp++ = NULL;
236	if (*cp)
237	*cpp++ = cp;
238	while (cp != ' ' && cp != '\t' && *cp)
239	cp++;
240	}
241	*cpp = NIL;
242	}
243	cp = buf;
244	l_prcbeg = convexp (tgetstr ("pb", &cp));
245	cp = buf;
246	l_combeg = convexp (tgetstr ("cb", &cp));
247	cp = buf;
248	l_comend = convexp (tgetstr ("ce", &cp));
249	cp = buf;
d72dd43f DP	250	l_acmbeg = convexp (tgetstr ("ab", &cp));
	251	cp = buf;
	252	l_acmend = convexp (tgetstr ("ae", &cp));
	253	cp = buf;
a388f2af BJ	254	l_strbeg = convexp (tgetstr ("sb", &cp));
	255	cp = buf;
	256	l_strend = convexp (tgetstr ("se", &cp));
	257	cp = buf;
	258	l_blkbeg = convexp (tgetstr ("bb", &cp));
	259	cp = buf;
	260	l_blkend = convexp (tgetstr ("be", &cp));
	261	cp = buf;
	262	l_chrbeg = convexp (tgetstr ("lb", &cp));
	263	cp = buf;
	264	l_chrend = convexp (tgetstr ("le", &cp));
	265	l_escape = '\\';
	266	l_onecase = tgetflag ("oc");
	267	l_toplex = tgetflag ("tl");
d72dd43f	268
a388f2af BJ	269	/* initialize the program */
	270
	271	incomm = FALSE;
	272	instr = FALSE;
	273	inchr = FALSE;
	274	_escaped = FALSE;
	275	blklevel = 0;
	276	for (psptr=0; psptr<PSMAX; psptr++) {
	277	pstack[psptr][0] = NULL;
	278	plstack[psptr] = 0;
	279	}
	280	psptr = -1;
	281	ps("'-F\n");
	282	if (!filter) {
	283	printf(".ds =F %s\n", fname);
91146c92 DP	284	ps("'wh 0 vH\n");
91146c92 DP	285	ps("'wh -1i vF\n");
a388f2af BJ	286	}
	287	if (needbp) {
	288	needbp = 0;
	289	printf(".()\n");
	290	printf(".bp\n");
	291	}
546e1f78 DS	292	if (!filter) {
	293	fstat(fileno(stdin), &stbuf);
	294	cp = ctime(&stbuf.st_mtime);
	295	cp[16] = '\0';
	296	cp[24] = '\0';
	297	printf(".ds =M %s %s\n", cp+4, cp+20);
	298	}
a388f2af BJ	299
	300	/*
	301	* MAIN LOOP!!!
	302	*/
	303	while (fgets(buf, sizeof buf, stdin) != NULL) {
	304	if (buf[0] == '\f') {
	305	printf(".bp\n");
	306	}
	307	if (buf[0] == '.') {
	308	printf("%s", buf);
	309	if (!strncmp (buf+1, "vS", 2))
	310	pass = TRUE;
	311	if (!strncmp (buf+1, "vE", 2))
	312	pass = FALSE;
	313	continue;
	314	}
	315	prccont = FALSE;
	316	if (!filter \|\| pass)
	317	putScp(buf);
	318	else
	319	printf("%s", buf);
	320	if (prccont && (psptr >= 0)) {
	321	ps("'FC ");
	322	ps(pstack[psptr]);
	323	ps("\n");
	324	}
	325	#ifdef DEBUG
	326	printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
	327	#endif
	328	margin = 0;
	329	}
	330	needbp = 1;
	331	} while (argc > 0);
	332	exit(0);
0b79a041 BJ	333	}
0b79a041 BJ	334
0b79a041 BJ	335	#define isidchr(c) (isalnum(c) \|\| (c) == '_')
	336
	337	putScp(os)
a388f2af	338	char *os;
0b79a041	339	{
a388f2af BJ	340	register char s = os; / pointer to unmatched string */
a388f2af BJ	341	char dummy[BUFSIZ]; /* dummy to be used by expmatch */
a388f2af	342	char comptr; / end of a comment delimiter */
d72dd43f	343	char acmptr; / end of a comment delimiter */
a388f2af BJ	344	char strptr; / end of a string delimiter */
	345	char chrptr; / end of a character const delimiter */
	346	char blksptr; / end of a lexical block start */
	347	char blkeptr; / end of a lexical block end */
	348
	349	_start = os; /* remember the start for expmatch */
	350	_escaped = FALSE;
	351	if (nokeyw \|\| incomm \|\| instr)
	352	goto skip;
	353	if (isproc(s)) {
	354	ps("'FN ");
	355	ps(pname);
09aabb70	356	ps("\n");
a388f2af BJ	357	if (psptr < PSMAX) {
	358	++psptr;
	359	strncpy (pstack[psptr], pname, PNAMELEN);
	360	pstack[psptr][PNAMELEN] = NULL;
a388f2af BJ	361	plstack[psptr] = blklevel;
	362	}
	363	}
0b79a041	364	skip:
a388f2af	365	do {
a388f2af BJ	366	/* check for string, comment, blockstart, etc */
	367	if (!incomm && !instr && !inchr) {
	368
	369	blkeptr = expmatch (s, l_blkend, dummy);
	370	blksptr = expmatch (s, l_blkbeg, dummy);
	371	comptr = expmatch (s, l_combeg, dummy);
d72dd43f	372	acmptr = expmatch (s, l_acmbeg, dummy);
a388f2af BJ	373	strptr = expmatch (s, l_strbeg, dummy);
	374	chrptr = expmatch (s, l_chrbeg, dummy);
	375
	376	/* start of a comment? */
	377	if (comptr != NIL)
	378	if ((comptr < strptr \|\| strptr == NIL)
d72dd43f	379	&& (comptr < acmptr \|\| acmptr == NIL)
a388f2af BJ	380	&& (comptr < chrptr \|\| chrptr == NIL)
	381	&& (comptr < blksptr \|\| blksptr == NIL)
	382	&& (comptr < blkeptr \|\| blkeptr == NIL)) {
	383	putKcp (s, comptr-1, FALSE);
	384	s = comptr;
	385	incomm = TRUE;
d72dd43f DP	386	comtype = STANDARD;
	387	if (s != os)
	388	ps ("\\c");
	389	ps ("\\c\n'+C\n");
	390	continue;
	391	}
	392
	393	/* start of a comment? */
	394	if (acmptr != NIL)
	395	if ((acmptr < strptr \|\| strptr == NIL)
	396	&& (acmptr < chrptr \|\| chrptr == NIL)
	397	&& (acmptr < blksptr \|\| blksptr == NIL)
	398	&& (acmptr < blkeptr \|\| blkeptr == NIL)) {
	399	putKcp (s, acmptr-1, FALSE);
	400	s = acmptr;
	401	incomm = TRUE;
	402	comtype = ALTERNATE;
a388f2af BJ	403	if (s != os)
	404	ps ("\\c");
	405	ps ("\\c\n'+C\n");
	406	continue;
cca8d17e	407	}
a388f2af BJ	408
	409	/* start of a string? */
	410	if (strptr != NIL)
	411	if ((strptr < chrptr \|\| chrptr == NIL)
d81ba424 BJ	412	&& (strptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	413	&& (strptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	414	putKcp (s, strptr-1, FALSE);
	415	s = strptr;
	416	instr = TRUE;
	417	continue;
0b79a041	418	}
b48967e6	419
a388f2af BJ	420	/* start of a character string? */
a388f2af BJ	421	if (chrptr != NIL)
d81ba424 BJ	422	if ((chrptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	423	&& (chrptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	424	putKcp (s, chrptr-1, FALSE);
	425	s = chrptr;
	426	inchr = TRUE;
	427	continue;
0b79a041	428	}
b48967e6	429
a388f2af BJ	430	/* end of a lexical block */
	431	if (blkeptr != NIL) {
	432	if (blkeptr < blksptr \|\| blksptr == NIL) {
	433	putKcp (s, blkeptr - 1, FALSE);
	434	s = blkeptr;
	435	blklevel--;
	436	if (psptr >= 0 && plstack[psptr] >= blklevel) {
b48967e6	437
a388f2af	438	/* end of current procedure */
b48967e6	439	if (s != os)
a388f2af BJ	440	ps ("\\c");
	441	ps ("\\c\n'-F\n");
	442	blklevel = plstack[psptr];
	443
	444	/* see if we should print the last proc name */
	445	if (--psptr >= 0)
	446	prccont = TRUE;
	447	else
	448	psptr = -1;
	449	}
	450	continue;
0b79a041	451	}
a388f2af	452	}
b48967e6	453
a388f2af BJ	454	/* start of a lexical block */
	455	if (blksptr != NIL) {
	456	putKcp (s, blksptr - 1, FALSE);
	457	s = blksptr;
	458	blklevel++;
	459	continue;
	460	}
	461
	462	/* check for end of comment */
	463	} else if (incomm) {
d72dd43f DP	464	comptr = expmatch (s, l_comend, dummy);
	465	acmptr = expmatch (s, l_acmend, dummy);
	466	if (((comtype == STANDARD) && (comptr != NIL)) \|\|
	467	((comtype == ALTERNATE) && (acmptr != NIL))) {
	468	if (comtype == STANDARD) {
	469	putKcp (s, comptr-1, TRUE);
	470	s = comptr;
	471	} else {
	472	putKcp (s, acmptr-1, TRUE);
	473	s = acmptr;
	474	}
a388f2af BJ	475	incomm = FALSE;
	476	ps("\\c\n'-C\n");
	477	continue;
	478	} else {
1a8c1b81	479	putKcp (s, s + strlen(s) -1, TRUE);
a388f2af BJ	480	s = s + strlen(s);
	481	continue;
	482	}
	483
	484	/* check for end of string */
	485	} else if (instr) {
	486	if ((strptr = expmatch (s, l_strend, dummy)) != NIL) {
	487	putKcp (s, strptr-1, TRUE);
	488	s = strptr;
	489	instr = FALSE;
	490	continue;
	491	} else {
	492	putKcp (s, s+strlen(s)-1, TRUE);
	493	s = s + strlen(s);
	494	continue;
	495	}
	496
	497	/* check for end of character string */
	498	} else if (inchr) {
	499	if ((chrptr = expmatch (s, l_chrend, dummy)) != NIL) {
	500	putKcp (s, chrptr-1, TRUE);
	501	s = chrptr;
	502	inchr = FALSE;
	503	continue;
	504	} else {
	505	putKcp (s, s+strlen(s)-1, TRUE);
	506	s = s + strlen(s);
	507	continue;
	508	}
0b79a041	509	}
a388f2af BJ	510
	511	/* print out the line */
	512	putKcp (s, s + strlen(s) -1, FALSE);
	513	s = s + strlen(s);
	514	} while (*s);
0b79a041 BJ	515	}
0b79a041 BJ	516
a388f2af BJ	517	putKcp (start, end, force)
	518	char start; / start of string to write */
	519	char end; / end of string to write */
	520	boolean force; /* true if we should force nokeyw */
	521	{
	522	int i;
d22f197f	523	int xfld = 0;
a388f2af BJ	524
a388f2af BJ	525	while (start <= end) {
d22f197f BJ	526	if (index) {
	527	if (start == ' ' \|\| start == '\t') {
	528	if (xfld == 0)
	529	printf("\ 1");
	530	printf("\t");
	531	xfld = 1;
	532	while (start == ' ' \|\| start == '\t')
	533	start++;
	534	continue;
	535	}
	536	}
a388f2af BJ	537
	538	/* take care of nice tab stops */
	539	if (*start == '\t') {
	540	while (*start == '\t')
	541	start++;
	542	i = tabs(_start, start) - margin / 8;
	543	printf("\\h'\|%dn'", i * 10 + 1 - margin % 8);
	544	continue;
	545	}
	546
	547	if (!nokeyw && !force)
	548	if ((start == '#' \|\| isidchr(start))
	549	&& (start == _start \|\| !isidchr(start[-1]))) {
	550	i = iskw(start);
	551	if (i > 0) {
	552	ps("\\*(+K");
	553	do
	554	putcp(*start++);
	555	while (--i > 0);
	556	ps("\\*(-K");
	557	continue;
	558	}
	559	}
	560
	561	putcp (*start++);
	562	}
	563	}
	564
	565
0b79a041	566	tabs(s, os)
a388f2af	567	char s, os;
0b79a041 BJ	568	{
0b79a041 BJ	569
a388f2af	570	return (width(s, os) / 8);
0b79a041 BJ	571	}
	572
	573	width(s, os)
	574	register char s, os;
	575	{
	576	register int i = 0;
	577
	578	while (s < os) {
	579	if (*s == '\t') {
	580	i = (i + 8) &~ 7;
	581	s++;
	582	continue;
	583	}
	584	if (*s < ' ')
	585	i += 2;
	586	else
	587	i++;
	588	s++;
	589	}
	590	return (i);
	591	}
	592
	593	putcp(c)
	594	register int c;
	595	{
	596
	597	switch(c) {
	598
a388f2af BJ	599	case 0:
	600	break;
	601
	602	case '\f':
	603	break;
	604
0b79a041 BJ	605	case '{':
	606	ps("\\(+K{\\(-K");
	607	break;
	608
	609	case '}':
	610	ps("\\(+K}\\(-K");
	611	break;
	612
	613	case '\\':
	614	ps("\\e");
	615	break;
	616
	617	case '_':
	618	ps("\\*_");
	619	break;
	620
	621	case '-':
	622	ps("\\*-");
	623	break;
	624
	625	case '`':
	626	ps("\\`");
	627	break;
	628
	629	case '\'':
	630	ps("\\'");
	631	break;
	632
	633	case '.':
	634	ps("\\&.");
	635	break;
	636
341765b5 BJ	637	case '*':
	638	ps("\\fI*\\fP");
	639	break;
	640
a388f2af	641	case '/':
341765b5	642	ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
a388f2af BJ	643	break;
a388f2af BJ	644
0b79a041 BJ	645	default:
	646	if (c < 040)
	647	putchar('^'), c \|= '@';
	648	case '\t':
	649	case '\n':
	650	putchar(c);
	651	}
	652	}
	653
a388f2af BJ	654	/*
a388f2af BJ	655	* look for a process beginning on this line
b48967e6	656	*/
a388f2af BJ	657	boolean
	658	isproc(s)
	659	char *s;
b48967e6	660	{
a388f2af BJ	661	pname[0] = NULL;
	662	if (!l_toplex \|\| blklevel == 0)
	663	if (expmatch (s, l_prcbeg, pname) != NIL) {
	664	return (TRUE);
	665	}
	666	return (FALSE);
b48967e6 BJ	667	}
b48967e6 BJ	668
a388f2af	669
b48967e6 BJ	670	/* iskw - check to see if the next word is a keyword
	671	*/
	672
0b79a041 BJ	673	iskw(s)
	674	register char *s;
	675	{
a388f2af	676	register char **ss = l_keywds;
0b79a041 BJ	677	register int i = 1;
	678	register char *cp = s;
	679
	680	while (++cp, isidchr(*cp))
	681	i++;
	682	while (cp = *ss++)
a388f2af	683	if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
0b79a041 BJ	684	return (i);
	685	return (0);
	686	}