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

static char sccsid[] = "@(#)vfontedpr.c	4.1	(Berkeley)	%G%";

#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
edd148a9 KM	1	static char sccsid[] = "@(#)vfontedpr.c 4.1 (Berkeley) %G%";
edd148a9 KM	2
0b79a041 BJ	3	#include <ctype.h>
	4	#include <stdio.h>
	5	#include <sys/types.h>
	6	#include <sys/stat.h>
	7
a388f2af BJ	8	#define boolean int
	9	#define TRUE 1
	10	#define FALSE 0
	11	#define NIL 0
d72dd43f DP	12	#define STANDARD 0
d72dd43f DP	13	#define ALTERNATE 1
a388f2af	14
0b79a041 BJ	15	/*
	16	* Vfontedpr.
	17	*
a388f2af	18	* Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
f5fa559c BJ	19	*
f5fa559c BJ	20	*/
f5fa559c BJ	21
	22	#define STRLEN 10 /* length of strings introducing things */
	23	#define PNAMELEN 40 /* length of a function/procedure name */
a388f2af	24	#define PSMAX 20 /* size of procedure name stacking */
f5fa559c	25
a388f2af	26	/* regular expression routines */
b48967e6	27
a388f2af BJ	28	char expmatch(); / match a string to an expression */
	29	char STRNCMP(); / a different kindof strncmp */
	30	char convexp(); / convert expression to internal form */
	31
	32	boolean isproc();
f5fa559c	33
f5fa559c	34
0b79a041	35	char *ctime();
a388f2af BJ	36
	37	/*
	38	* The state variables
	39	*/
	40
	41	boolean incomm; /* in a comment of the primary type */
	42	boolean instr; /* in a string constant */
	43	boolean inchr; /* in a string constant */
	44	boolean nokeyw = FALSE; /* no keywords being flagged */
	45	boolean index = FALSE; /* form an index */
	46	boolean filter = FALSE; /* act as a filter (like eqn) */
	47	boolean pass = FALSE; /* when acting as a filter, pass indicates
	48	* whether we are currently processing
	49	* input.
	50	*/
	51	boolean prccont; /* continue last procedure */
d72dd43f	52	int comtype; /* type of comment */
0b79a041	53	int margin;
a388f2af BJ	54	int psptr; /* the stack index of the current procedure */
	55	char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
	56	int plstack[PSMAX]; /* the procedure nesting level stack */
	57	int blklevel; /* current nesting level */
	58	char defsfile = "/usr/lib/vgrindefs"; / name of language definitions file */
	59	char pname[BUFSIZ+1];
b48967e6	60
a388f2af BJ	61	/*
	62	* The language specific globals
	63	*/
	64
	65	char language = "c"; / the language indicator */
	66	char l_keywds[BUFSIZ/2]; / keyword table address */
	67	char l_prcbeg; / regular expr for procedure begin */
	68	char l_combeg; / string introducing a comment */
	69	char l_comend; / string ending a comment */
d72dd43f DP	70	char l_acmbeg; / string introducing a comment */
d72dd43f DP	71	char l_acmend; / string ending a comment */
a388f2af BJ	72	char l_blkbeg; / string begining of a block */
	73	char l_blkend; / string ending a block */
	74	char l_strbeg; / delimiter for string constant */
	75	char l_strend; / delimiter for string constant */
	76	char l_chrbeg; / delimiter for character constant */
	77	char l_chrend; / delimiter for character constant */
	78	char l_escape; /* character used to escape characters */
	79	boolean l_toplex; /* procedures only defined at top lex level */
	80
	81	/*
	82	* global variables also used by expmatch
	83	*/
	84	boolean _escaped; /* if last character was an escape */
	85	char _start; / start of the current string */
	86	boolean l_onecase; /* upper and lower case are equivalent */
f5fa559c BJ	87
f5fa559c BJ	88	#define ps(x) printf("%s", x)
0b79a041 BJ	89
0b79a041 BJ	90	main(argc, argv)
a388f2af BJ	91	int argc;
a388f2af BJ	92	char *argv[];
0b79a041	93	{
a388f2af BJ	94	int lineno;
	95	char *fname = "";
	96	char *ptr;
	97	struct stat stbuf;
	98	char buf[BUFSIZ];
	99	char strings[2 * BUFSIZ];
	100	char defs[2 * BUFSIZ];
	101	int needbp = 0;
	102
	103	argc--, argv++;
	104	do {
	105	char *cp;
	106	int i;
	107
	108	if (argc > 0) {
	109	if (!strcmp(argv[0], "-h")) {
	110	if (argc == 1) {
	111	printf("'ds =H\n");
	112	argc = 0;
	113	goto rest;
0b79a041	114	}
a388f2af	115	printf("'ds =H %s\n", argv[1]);
91146c92 DP	116	argc--, argv++;
91146c92 DP	117	argc--, argv++;
a388f2af BJ	118	if (argc > 0)
	119	continue;
	120	goto rest;
	121	}
	122
	123	/* act as a filter like eqn */
	124	if (!strcmp(argv[0], "-f")) {
	125	filter++;
	126	argv[0] = argv[argc-1];
	127	argv[argc-1] = "-";
	128	continue;
	129	}
	130
	131	/* take input from the standard place */
	132	if (!strcmp(argv[0], "-")) {
	133	argc = 0;
	134	goto rest;
	135	}
	136
	137	/* build an index */
	138	if (!strcmp(argv[0], "-x")) {
	139	index++;
	140	argv[0] = "-n";
	141	}
	142
	143	/* indicate no keywords */
	144	if (!strcmp(argv[0], "-n")) {
	145	nokeyw++;
	146	argc--, argv++;
	147	continue;
	148	}
	149
	150	/* specify the font size */
	151	if (!strncmp(argv[0], "-s", 2)) {
	152	i = 0;
	153	cp = argv[0] + 2;
	154	while (*cp)
	155	i = i * 10 + (*cp++ - '0');
	156	printf("'ps %d\n'vs %d\n", i, i+1);
	157	argc--, argv++;
	158	continue;
	159	}
	160
	161	/* specify the language */
	162	if (!strncmp(argv[0], "-l", 2)) {
	163	language = argv[0]+2;
	164	argc--, argv++;
	165	continue;
	166	}
	167
	168	/* specify the language description file */
	169	if (!strncmp(argv[0], "-d", 2)) {
	170	defsfile = argv[1];
	171	argc--, argv++;
	172	argc--, argv++;
	173	continue;
	174	}
	175
	176	/* open the file for input */
	177	if (freopen(argv[0], "r", stdin) == NULL) {
	178	perror(argv[0]);
	179	exit(1);
	180	}
	181	if (index)
182	printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
183	fname = argv[0];
184	argc--, argv++;
185	}
186	rest:
187
188	/*
189	* get the language definition from the defs file
190	*/
191	i = tgetent (defs, language, defsfile);
192	if (i == 0) {
193	fprintf (stderr, "no entry for language %s\n", language);
194	exit (0);
195	} else if (i < 0) {
196	fprintf (stderr, "cannot find vgrindefs file %s\n", defsfile);
197	exit (0);
198	}
199	cp = strings;
200	if (tgetstr ("kw", &cp) == NIL)
201	nokeyw = TRUE;
202	else {
203	char **cpp;
204
205	cpp = l_keywds;
206	cp = strings;
207	while (*cp) {
208	while (cp == ' ' \|\| cp =='\t')
209	*cp++ = NULL;
210	if (*cp)
211	*cpp++ = cp;
212	while (cp != ' ' && cp != '\t' && *cp)
213	cp++;
214	}
215	*cpp = NIL;
216	}
217	cp = buf;
218	l_prcbeg = convexp (tgetstr ("pb", &cp));
219	cp = buf;
220	l_combeg = convexp (tgetstr ("cb", &cp));
221	cp = buf;
222	l_comend = convexp (tgetstr ("ce", &cp));
223	cp = buf;
d72dd43f DP	224	l_acmbeg = convexp (tgetstr ("ab", &cp));
	225	cp = buf;
	226	l_acmend = convexp (tgetstr ("ae", &cp));
	227	cp = buf;
a388f2af BJ	228	l_strbeg = convexp (tgetstr ("sb", &cp));
	229	cp = buf;
	230	l_strend = convexp (tgetstr ("se", &cp));
	231	cp = buf;
	232	l_blkbeg = convexp (tgetstr ("bb", &cp));
	233	cp = buf;
	234	l_blkend = convexp (tgetstr ("be", &cp));
	235	cp = buf;
	236	l_chrbeg = convexp (tgetstr ("lb", &cp));
	237	cp = buf;
	238	l_chrend = convexp (tgetstr ("le", &cp));
	239	l_escape = '\\';
	240	l_onecase = tgetflag ("oc");
	241	l_toplex = tgetflag ("tl");
d72dd43f	242
a388f2af BJ	243	/* initialize the program */
	244
	245	incomm = FALSE;
	246	instr = FALSE;
	247	inchr = FALSE;
	248	_escaped = FALSE;
	249	blklevel = 0;
	250	for (psptr=0; psptr<PSMAX; psptr++) {
	251	pstack[psptr][0] = NULL;
	252	plstack[psptr] = 0;
	253	}
	254	psptr = -1;
	255	ps("'-F\n");
	256	if (!filter) {
	257	printf(".ds =F %s\n", fname);
	258	fstat(fileno(stdin), &stbuf);
	259	cp = ctime(&stbuf.st_mtime);
	260	cp[16] = '\0';
	261	cp[24] = '\0';
	262	printf(".ds =M %s %s\n", cp+4, cp+20);
91146c92 DP	263	ps("'wh 0 vH\n");
91146c92 DP	264	ps("'wh -1i vF\n");
a388f2af BJ	265	}
	266	if (needbp) {
	267	needbp = 0;
	268	printf(".()\n");
	269	printf(".bp\n");
	270	}
	271
	272	/*
	273	* MAIN LOOP!!!
	274	*/
	275	while (fgets(buf, sizeof buf, stdin) != NULL) {
	276	if (buf[0] == '\f') {
	277	printf(".bp\n");
	278	}
	279	if (buf[0] == '.') {
	280	printf("%s", buf);
	281	if (!strncmp (buf+1, "vS", 2))
	282	pass = TRUE;
	283	if (!strncmp (buf+1, "vE", 2))
	284	pass = FALSE;
	285	continue;
	286	}
	287	prccont = FALSE;
	288	if (!filter \|\| pass)
	289	putScp(buf);
	290	else
	291	printf("%s", buf);
	292	if (prccont && (psptr >= 0)) {
	293	ps("'FC ");
	294	ps(pstack[psptr]);
	295	ps("\n");
	296	}
	297	#ifdef DEBUG
	298	printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
	299	#endif
	300	margin = 0;
	301	}
	302	needbp = 1;
	303	} while (argc > 0);
	304	exit(0);
0b79a041 BJ	305	}
0b79a041 BJ	306
0b79a041 BJ	307	#define isidchr(c) (isalnum(c) \|\| (c) == '_')
	308
	309	putScp(os)
a388f2af	310	char *os;
0b79a041	311	{
a388f2af BJ	312	register char s = os; / pointer to unmatched string */
a388f2af BJ	313	char dummy[BUFSIZ]; /* dummy to be used by expmatch */
a388f2af	314	char comptr; / end of a comment delimiter */
d72dd43f	315	char acmptr; / end of a comment delimiter */
a388f2af BJ	316	char strptr; / end of a string delimiter */
	317	char chrptr; / end of a character const delimiter */
	318	char blksptr; / end of a lexical block start */
	319	char blkeptr; / end of a lexical block end */
	320
	321	_start = os; /* remember the start for expmatch */
	322	_escaped = FALSE;
	323	if (nokeyw \|\| incomm \|\| instr)
	324	goto skip;
	325	if (isproc(s)) {
	326	ps("'FN ");
	327	ps(pname);
09aabb70	328	ps("\n");
a388f2af BJ	329	if (psptr < PSMAX) {
	330	++psptr;
	331	strncpy (pstack[psptr], pname, PNAMELEN);
	332	pstack[psptr][PNAMELEN] = NULL;
a388f2af BJ	333	plstack[psptr] = blklevel;
	334	}
	335	}
0b79a041	336	skip:
a388f2af	337	do {
a388f2af BJ	338	/* check for string, comment, blockstart, etc */
	339	if (!incomm && !instr && !inchr) {
	340
	341	blkeptr = expmatch (s, l_blkend, dummy);
	342	blksptr = expmatch (s, l_blkbeg, dummy);
	343	comptr = expmatch (s, l_combeg, dummy);
d72dd43f	344	acmptr = expmatch (s, l_acmbeg, dummy);
a388f2af BJ	345	strptr = expmatch (s, l_strbeg, dummy);
	346	chrptr = expmatch (s, l_chrbeg, dummy);
	347
	348	/* start of a comment? */
	349	if (comptr != NIL)
	350	if ((comptr < strptr \|\| strptr == NIL)
d72dd43f	351	&& (comptr < acmptr \|\| acmptr == NIL)
a388f2af BJ	352	&& (comptr < chrptr \|\| chrptr == NIL)
	353	&& (comptr < blksptr \|\| blksptr == NIL)
	354	&& (comptr < blkeptr \|\| blkeptr == NIL)) {
	355	putKcp (s, comptr-1, FALSE);
	356	s = comptr;
	357	incomm = TRUE;
d72dd43f DP	358	comtype = STANDARD;
	359	if (s != os)
	360	ps ("\\c");
	361	ps ("\\c\n'+C\n");
	362	continue;
	363	}
	364
	365	/* start of a comment? */
	366	if (acmptr != NIL)
	367	if ((acmptr < strptr \|\| strptr == NIL)
	368	&& (acmptr < chrptr \|\| chrptr == NIL)
	369	&& (acmptr < blksptr \|\| blksptr == NIL)
	370	&& (acmptr < blkeptr \|\| blkeptr == NIL)) {
	371	putKcp (s, acmptr-1, FALSE);
	372	s = acmptr;
	373	incomm = TRUE;
	374	comtype = ALTERNATE;
a388f2af BJ	375	if (s != os)
	376	ps ("\\c");
	377	ps ("\\c\n'+C\n");
	378	continue;
cca8d17e	379	}
a388f2af BJ	380
	381	/* start of a string? */
	382	if (strptr != NIL)
	383	if ((strptr < chrptr \|\| chrptr == NIL)
d81ba424 BJ	384	&& (strptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	385	&& (strptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	386	putKcp (s, strptr-1, FALSE);
	387	s = strptr;
	388	instr = TRUE;
	389	continue;
0b79a041	390	}
b48967e6	391
a388f2af BJ	392	/* start of a character string? */
a388f2af BJ	393	if (chrptr != NIL)
d81ba424 BJ	394	if ((chrptr < blksptr \|\| blksptr == NIL)
d81ba424 BJ	395	&& (chrptr < blkeptr \|\| blkeptr == NIL)) {
a388f2af BJ	396	putKcp (s, chrptr-1, FALSE);
	397	s = chrptr;
	398	inchr = TRUE;
	399	continue;
0b79a041	400	}
b48967e6	401
a388f2af BJ	402	/* end of a lexical block */
	403	if (blkeptr != NIL) {
	404	if (blkeptr < blksptr \|\| blksptr == NIL) {
	405	putKcp (s, blkeptr - 1, FALSE);
	406	s = blkeptr;
	407	blklevel--;
	408	if (psptr >= 0 && plstack[psptr] >= blklevel) {
b48967e6	409
a388f2af	410	/* end of current procedure */
b48967e6	411	if (s != os)
a388f2af BJ	412	ps ("\\c");
	413	ps ("\\c\n'-F\n");
	414	blklevel = plstack[psptr];
	415
	416	/* see if we should print the last proc name */
	417	if (--psptr >= 0)
	418	prccont = TRUE;
	419	else
	420	psptr = -1;
	421	}
	422	continue;
0b79a041	423	}
a388f2af	424	}
b48967e6	425
a388f2af BJ	426	/* start of a lexical block */
	427	if (blksptr != NIL) {
	428	putKcp (s, blksptr - 1, FALSE);
	429	s = blksptr;
	430	blklevel++;
	431	continue;
	432	}
	433
	434	/* check for end of comment */
	435	} else if (incomm) {
d72dd43f DP	436	comptr = expmatch (s, l_comend, dummy);
	437	acmptr = expmatch (s, l_acmend, dummy);
	438	if (((comtype == STANDARD) && (comptr != NIL)) \|\|
	439	((comtype == ALTERNATE) && (acmptr != NIL))) {
	440	if (comtype == STANDARD) {
	441	putKcp (s, comptr-1, TRUE);
	442	s = comptr;
	443	} else {
	444	putKcp (s, acmptr-1, TRUE);
	445	s = acmptr;
	446	}
a388f2af BJ	447	incomm = FALSE;
	448	ps("\\c\n'-C\n");
	449	continue;
	450	} else {
	451	putKcp (s, s + strlen(s) -1);
	452	s = s + strlen(s);
	453	continue;
	454	}
	455
	456	/* check for end of string */
	457	} else if (instr) {
	458	if ((strptr = expmatch (s, l_strend, dummy)) != NIL) {
	459	putKcp (s, strptr-1, TRUE);
	460	s = strptr;
	461	instr = FALSE;
	462	continue;
	463	} else {
	464	putKcp (s, s+strlen(s)-1, TRUE);
	465	s = s + strlen(s);
	466	continue;
	467	}
	468
	469	/* check for end of character string */
	470	} else if (inchr) {
	471	if ((chrptr = expmatch (s, l_chrend, dummy)) != NIL) {
	472	putKcp (s, chrptr-1, TRUE);
	473	s = chrptr;
	474	inchr = FALSE;
	475	continue;
	476	} else {
	477	putKcp (s, s+strlen(s)-1, TRUE);
	478	s = s + strlen(s);
	479	continue;
	480	}
0b79a041	481	}
a388f2af BJ	482
	483	/* print out the line */
	484	putKcp (s, s + strlen(s) -1, FALSE);
	485	s = s + strlen(s);
	486	} while (*s);
0b79a041 BJ	487	}
0b79a041 BJ	488
a388f2af BJ	489	putKcp (start, end, force)
	490	char start; / start of string to write */
	491	char end; / end of string to write */
	492	boolean force; /* true if we should force nokeyw */
	493	{
	494	int i;
d22f197f	495	int xfld = 0;
a388f2af BJ	496
a388f2af BJ	497	while (start <= end) {
d22f197f BJ	498	if (index) {
	499	if (start == ' ' \|\| start == '\t') {
	500	if (xfld == 0)
	501	printf("\ 1");
	502	printf("\t");
	503	xfld = 1;
	504	while (start == ' ' \|\| start == '\t')
	505	start++;
	506	continue;
	507	}
	508	}
a388f2af BJ	509
	510	/* take care of nice tab stops */
	511	if (*start == '\t') {
	512	while (*start == '\t')
	513	start++;
	514	i = tabs(_start, start) - margin / 8;
	515	printf("\\h'\|%dn'", i * 10 + 1 - margin % 8);
	516	continue;
	517	}
	518
	519	if (!nokeyw && !force)
	520	if ((start == '#' \|\| isidchr(start))
	521	&& (start == _start \|\| !isidchr(start[-1]))) {
	522	i = iskw(start);
	523	if (i > 0) {
	524	ps("\\*(+K");
	525	do
	526	putcp(*start++);
	527	while (--i > 0);
	528	ps("\\*(-K");
	529	continue;
	530	}
	531	}
	532
	533	putcp (*start++);
	534	}
	535	}
	536
	537
0b79a041	538	tabs(s, os)
a388f2af	539	char s, os;
0b79a041 BJ	540	{
0b79a041 BJ	541
a388f2af	542	return (width(s, os) / 8);
0b79a041 BJ	543	}
	544
	545	width(s, os)
	546	register char s, os;
	547	{
	548	register int i = 0;
	549
	550	while (s < os) {
	551	if (*s == '\t') {
	552	i = (i + 8) &~ 7;
	553	s++;
	554	continue;
	555	}
	556	if (*s < ' ')
	557	i += 2;
	558	else
	559	i++;
	560	s++;
	561	}
	562	return (i);
	563	}
	564
	565	putcp(c)
	566	register int c;
	567	{
	568
	569	switch(c) {
	570
a388f2af BJ	571	case 0:
	572	break;
	573
	574	case '\f':
	575	break;
	576
0b79a041 BJ	577	case '{':
	578	ps("\\(+K{\\(-K");
	579	break;
	580
	581	case '}':
	582	ps("\\(+K}\\(-K");
	583	break;
	584
	585	case '\\':
	586	ps("\\e");
	587	break;
	588
	589	case '_':
	590	ps("\\*_");
	591	break;
	592
	593	case '-':
	594	ps("\\*-");
	595	break;
	596
	597	case '`':
	598	ps("\\`");
	599	break;
	600
	601	case '\'':
	602	ps("\\'");
	603	break;
	604
	605	case '.':
	606	ps("\\&.");
	607	break;
	608
341765b5 BJ	609	case '*':
	610	ps("\\fI*\\fP");
	611	break;
	612
a388f2af	613	case '/':
341765b5	614	ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
a388f2af BJ	615	break;
a388f2af BJ	616
0b79a041 BJ	617	default:
	618	if (c < 040)
	619	putchar('^'), c \|= '@';
	620	case '\t':
	621	case '\n':
	622	putchar(c);
	623	}
	624	}
	625
a388f2af BJ	626	/*
a388f2af BJ	627	* look for a process beginning on this line
b48967e6	628	*/
a388f2af BJ	629	boolean
	630	isproc(s)
	631	char *s;
b48967e6	632	{
a388f2af BJ	633	pname[0] = NULL;
	634	if (!l_toplex \|\| blklevel == 0)
	635	if (expmatch (s, l_prcbeg, pname) != NIL) {
	636	return (TRUE);
	637	}
	638	return (FALSE);
b48967e6 BJ	639	}
b48967e6 BJ	640
a388f2af	641
b48967e6 BJ	642	/* iskw - check to see if the next word is a keyword
	643	*/
	644
0b79a041 BJ	645	iskw(s)
	646	register char *s;
	647	{
a388f2af	648	register char **ss = l_keywds;
0b79a041 BJ	649	register int i = 1;
	650	register char *cp = s;
	651
	652	while (++cp, isidchr(*cp))
	653	i++;
	654	while (cp = *ss++)
a388f2af	655	if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
0b79a041 BJ	656	return (i);
	657	return (0);
	658	}