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BSD 4_3_Tahoe release
[unix-history] / usr / src / ucb / vgrind / vfontedpr.c
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef lint
static char sccsid[] = "@(#)vfontedpr.c 5.2 (Berkeley) 7/17/86";
#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);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.