Return to vfontedpr.c CVS log

Up to [local] / src / usr.bin / vgrind

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: vfontedpr.c,v 1.12 2009/10/27 23:59:46 deraadt Exp $	*/
/*	$NetBSD: vfontedpr.c,v 1.7 1998/12/19 23:41:53 christos Exp $	*/

/*
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/limits.h>
#include <time.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "pathnames.h"
#include "extern.h"

#define FALSE 0
#define TRUE !(FALSE)
#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 */

static int       iskw(char *);
static boolean   isproc(char *);
static void      putKcp(char *, char *, boolean);
static void      putScp(char *);
static void      putcp(int);
static int       tabs(char *, char *);
static int       width(char *, char *);

/*
 *	The state variables
 */

static boolean  filter = FALSE;	/* act as a filter (like eqn) */
static boolean	inchr;		/* in a string constant */
static boolean	incomm;		/* in a comment of the primary type */
static boolean	idx = FALSE;	/* form an index */
static boolean	instr;		/* in a string constant */
static boolean	nokeyw = FALSE;	/* no keywords being flagged */
static boolean  pass = FALSE;	/*
				 * when acting as a filter, pass indicates
				 * whether we are currently processing
				 * input.
				 */

static int	blklevel;	/* current nesting level */
static int	comtype;	/* type of comment */
static char    *defsfile[2] = { _PATH_VGRINDEFS, 0 };
				/* name of language definitions file */
static int	margin;
static int	plstack[PSMAX];	/* the procedure nesting level stack */
static char	pname[BUFSIZ+1]; 
static boolean  prccont;	/* continue last procedure */
static int	psptr;		/* the stack index of the current procedure */
static char	pstack[PSMAX][PNAMELEN+1];	/* the procedure name stack */

/*
 *	The language specific globals
 */

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

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

int
main(int argc, char *argv[])
{
    char *fname = "";
    struct stat stbuf;
    char buf[BUFSIZ];
    char *defs;
    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")) {
		idx++;
		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)) {
		const char *errstr;

		i = (int)strtonum(argv[0] + 2, 0, INT_MAX, &errstr);
		if (errstr)
			perror(argv[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[0] = 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 (idx)
		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 = cgetent(&defs, defsfile, language);
	if (i == -1) {
	    fprintf (stderr, "no entry for language %s\n", language);
	    exit (0);
	} else  if (i == -2) { fprintf(stderr, 
	    "cannot find vgrindefs file %s\n", defsfile[0]);
	    exit (0);
	} else if (i == -3) { fprintf(stderr, 
	    "potential reference loop detected in vgrindefs file %s\n", 
            defsfile[0]);				      
	    exit(0);
	}
	if (cgetustr(defs, "kw", &cp) == -1)
	    nokeyw = TRUE;
	else  {
	    char **cpp;

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

	/* initialize the program */

	incomm = FALSE;
	instr = FALSE;
	inchr = FALSE;
	x_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) == '_')

static void
putScp(char *os)
{
    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 */

    x_start = os;			/* remember the start for expmatch */
    x_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);
}

static void
putKcp(char *start, char *end, boolean force)
{
    int i;
    int xfld = 0;

    while (start <= end) {
	if (idx) {
	    if (*start == ' ' || *start == '\t') {
		if (xfld == 0)	
		    printf("
");
		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(x_start, start) - margin / 8;
	    printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
	    continue;
	}

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

	putcp (*start++);
    }
}


static int
tabs(char *s, char *os)
{

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

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

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

static void
putcp(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
 */
static boolean
isproc(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
 */

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

	while (++cp, isidchr(*cp))
		i++;
	while ((cp = *ss++))
		if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
			return (i);
	return (0);
}