OpenSolaris_b135/cmd/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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <ctype.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <locale.h>
#include <euc.h>
#include <stdlib.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 kind of strncmp */
char *convexp(); /* convert expression to internal form */
char *tgetstr(); /* extract a string-valued capability */
boolean isproc();
char *ctime();
char *strchr();
/*
* 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 doindex = FALSE; /* form an index */
boolean twocol = FALSE; /* in two-column mode */
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 */
int prclevel; /* nesting level at which procedure definitions
may be found, -1 if none currently valid
(meaningful only if l_prclevel is true) */
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_prcenable; /* re indicating that procedure definitions
can be found in the next lexical level --
kludge for lisp-like languages that use
something like
(defun (proc ...)
(proc ...)
)
to define procedures */
char l_escape; /* character used to escape characters */
boolean l_toplex; /* procedures only defined at top lex level */
boolean l_prclevel; /* procedure definitions valid only within
the nesting level indicated by the px
(l_prcenable) capability */
/*
* for the benefit of die-hards who aren't convinced that tabs
* occur every eight columns
*/
short tabsize = 8;
/*
* 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 */
char *l_idchars; /* characters legal in identifiers in addition
to letters and digits (default "_") */
static void putcp(int c);
static int width(char *s, char *os);
static int tabs(char *s, char *os);
static void putKcp(char *start, char *end, boolean force);
static void putScp(char *os);
static int iskw(char *s);
/*
* The code below emits troff macros and directives that consume part of the
* troff macro and register space. See tmac.vgrind for an enumeration of
* these macros and registers.
*/
int
main(int argc, char *argv[])
{
FILE *in;
char *fname;
struct stat stbuf;
char buf[BUFSIZ];
char idbuf[256]; /* enough for all 8 bit chars */
char strings[2 * BUFSIZ];
char defs[2 * BUFSIZ];
int needbp = 0;
int i;
char *cp;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
(void) textdomain(TEXT_DOMAIN);
/*
* Dump the name by which we were invoked.
*/
argc--, argv++;
/*
* Process arguments. For the sake of compatibility with older versions
* of the program, the syntax accepted below is very idiosyncratic. Some
* options require space between the option and its argument; others
* disallow it. No options may be bundled together.
*
* Actually, there is one incompatibility. Files and options formerly
* could be arbitrarily intermixed, but this is no longer allowed. (This
* possiblity was never documented.)
*/
while (argc > 0 && *argv[0] == '-') {
switch (*(cp = argv[0] + 1)) {
case '\0': /* - */
/* Take input from stdin. */
/*
* This option implies the end of the flag arguments. Leave the
* "-" in place for the file processing code to see.
*/
goto flagsdone;
case '2': /* -2 */
/* Enter two column mode. */
twocol = 1;
printf("'nr =2 1\n");
break;
case 'd': /* -d <defs-file> */
/* Specify the language description file. */
defsfile = argv[1];
argc--, argv++;
break;
case 'f': /* -f */
/* Act as a filter like eqn. */
filter = 1;
/*
* Slide remaining arguments down one position and postpend "-",
* to force reading from stdin.
*/
for (i = 0; i < argc - 1; i++)
argv[i] = argv[i + 1];
argv[argc - 1] = "-";
continue;
case 'h': /* -h [header] */
/* Specify header string. */
if (argc == 1) {
printf("'ds =H\n");
break;
}
printf("'ds =H %s\n", argv[1]);
argc--, argv++;
break;
case 'l': /* -l<language> */
/* Specify the language. */
language = cp + 1;
break;
case 'n': /* -n */
/* Indicate no keywords. */
nokeyw = 1;
break;
case 's': /* -s<size> */
/* Specify the font size. */
i = 0;
cp++;
while (*cp)
i = i * 10 + (*cp++ - '0');
printf("'nr vP %d\n", i);
break;
case 't': /* -t */
/* Specify a nondefault tab size. */
tabsize = 4;
break;
case 'x': /* -x */
/* Build an index. */
doindex = 1;
/* This option implies "-n" as well; turn it on. */
argv[0] = "-n";
continue;
}
/* Advance to next argument. */
argc--, argv++;
}
flagsdone:
/*
* Get the language definition from the defs file.
*/
i = tgetent (defs, language, defsfile);
if (i == 0) {
fprintf (stderr, gettext("no entry for language %s\n"), language);
exit (0);
} else if (i < 0) {
fprintf (stderr, gettext("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));
cp = buf;
l_prcenable = convexp (tgetstr ("px", &cp));
cp = idbuf;
l_idchars = tgetstr ("id", &cp);
/* Set default, for compatibility with old version */
if (l_idchars == NIL)
l_idchars = "_";
l_escape = '\\';
l_onecase = tgetflag ("oc");
l_toplex = tgetflag ("tl");
l_prclevel = tgetflag ("pl");
/*
* Emit a call to the initialization macro. If not in filter mode, emit a
* call to the vS macro, so that tmac.vgrind can uniformly assume that all
* program input is bracketed with vS-vE pairs.
*/
printf("'vI\n");
if (!filter)
printf("'vS\n");
if (doindex) {
/*
* XXX: Hard-wired spacing information. This should probably turn
* into the emission of a macro invocation, so that tmac.vgrind
* can make up its own mind about what spacing is appropriate.
*/
if (twocol)
printf("'ta 2.5i 2.75i 4.0iR\n'in .25i\n");
else
printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
}
while (argc > 0) {
if (strcmp(argv[0], "-") == 0) {
/* Embed an instance of the original stdin. */
in = fdopen(fileno(stdin), "r");
fname = "";
} else {
/* Open the file for input. */
if ((in = fopen(argv[0], "r")) == NULL) {
perror(argv[0]);
exit(1);
}
fname = argv[0];
}
argc--, argv++;
/*
* Reinitialize for the current file.
*/
incomm = FALSE;
instr = FALSE;
inchr = FALSE;
_escaped = FALSE;
blklevel = 0;
prclevel = -1;
for (psptr=0; psptr<PSMAX; psptr++) {
pstack[psptr][0] = NULL;
plstack[psptr] = 0;
}
psptr = -1;
printf("'-F\n");
if (!filter) {
char *cp;
printf(".ds =F %s\n", fname);
if (needbp) {
needbp = 0;
printf(".()\n");
printf(".bp\n");
}
fstat(fileno(in), &stbuf);
cp = ctime(&stbuf.st_mtime);
cp[16] = '\0';
cp[24] = '\0';
printf(".ds =M %s %s\n", cp+4, cp+20);
printf("'wh 0 vH\n");
printf("'wh -1i vF\n");
}
if (needbp && filter) {
needbp = 0;
printf(".()\n");
printf(".bp\n");
}
/*
* MAIN LOOP!!!
*/
while (fgets(buf, sizeof buf, in) != 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))
printf("'FC %s\n", pstack[psptr]);
#ifdef DEBUG
printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
#endif
margin = 0;
}
needbp = 1;
(void) fclose(in);
}
/* Close off the vS-vE pair. */
if (!filter)
printf("'vE\n");
return (0);
}
#define isidchr(c) (isalnum(c) || ((c) != NIL && strchr(l_idchars, (c)) != NIL))
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 */
Start = os; /* remember the start for expmatch */
_escaped = FALSE;
if (nokeyw || incomm || instr)
goto skip;
if (isproc(s)) {
printf("'FN %s\n", pname);
if (psptr < PSMAX-1) {
++psptr;
strncpy (pstack[psptr], pname, PNAMELEN);
pstack[psptr][PNAMELEN] = NULL;
plstack[psptr] = blklevel;
}
}
/*
* if l_prclevel is set, check to see whether this lexical level
* is one immediately below which procedure definitions are allowed.
*/
if (l_prclevel && !incomm && !instr && !inchr) {
if (expmatch (s, l_prcenable, dummy) != NIL)
prclevel = blklevel + 1;
}
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)
printf ("\\c");
printf ("\\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)
printf ("\\c");
printf ("\\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) {
/* reset prclevel if necessary */
if (l_prclevel && prclevel == blklevel)
prclevel = -1;
putKcp (s, blkeptr - 1, FALSE);
s = blkeptr;
blklevel--;
if (psptr >= 0 && plstack[psptr] >= blklevel) {
/* end of current procedure */
if (s != os)
printf ("\\c");
printf ("\\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;
printf("\\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)
/* start - start of string to write */
/* end - end of string to write */
/* force - true if we should force nokeyw */
{
int i;
int xfld = 0;
while (start <= end) {
if (doindex) {
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(Start, start) - margin / tabsize;
printf ("\\h'|%dn'",
i * (tabsize == 4 ? 5 : 10) + 1 - margin % tabsize);
continue;
}
if (!nokeyw && !force)
if ( (*start == '#' || isidchr(*start))
&& (start == Start || !isidchr(start[-1]))
) {
i = iskw(start);
if (i > 0) {
printf("\\*(+K");
do
putcp(*start++);
while (--i > 0);
printf("\\*(-K");
continue;
}
}
putcp (*start++);
}
}
static int
tabs(char *s, char *os)
{
return (width(s, os) / tabsize);
}
static int
width(char *s, char *os)
{
int i = 0;
unsigned char c;
int n;
while (s < os) {
if (*s == '\t') {
i = (i + tabsize) &~ (tabsize-1);
s++;
continue;
}
c = *(unsigned char *)s;
if (c < ' ')
i += 2, s++;
else if (c >= 0200) {
if ((n = mblen(s, MB_CUR_MAX)) > 0) {
i += csetcol(csetno(c));
s += n;
} else
s++;
} else
i++, s++;
}
return (i);
}
static void
putcp(int c)
{
switch(c) {
case 0:
break;
case '\f':
break;
case '{':
printf("\\*(+K{\\*(-K");
break;
case '}':
printf("\\*(+K}\\*(-K");
break;
case '\\':
printf("\\e");
break;
case '_':
printf("\\*_");
break;
case '-':
printf("\\*-");
break;
/*
* The following two cases deal with the accent characters.
* If they're part of a comment, we assume that they're part
* of running text and hand them to troff as regular quote
* characters. Otherwise, we assume they're being used as
* special characters (e.g., string delimiters) and arrange
* for troff to render them as accents. This is an imperfect
* heuristic that produces slightly better appearance than the
* former behavior of unconditionally rendering the characters
* as accents. (See bug 1040343.)
*/
case '`':
if (incomm)
printf("`");
else
printf("\\`");
break;
case '\'':
if (incomm)
printf("'");
else
printf("\\'");
break;
case '.':
printf("\\&.");
break;
/*
* The following two cases contain special hacking
* to make C-style comments line up. The tests aren't
* really adequate; they lead to grotesqueries such
* as italicized multiplication and division operators.
* However, the obvious test (!incomm) doesn't work,
* because incomm isn't set until after we've put out
* the comment-begin characters. The real problem is
* that expmatch() doesn't give us enough information.
*/
case '*':
if (instr || inchr)
printf("*");
else
printf("\\f2*\\fP");
break;
case '/':
if (instr || inchr)
printf("/");
else
printf("\\f2\\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_prclevel ? (prclevel == blklevel) : (!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
* Return its length if it is or 0 if it isn't.
*/
static int
iskw(char *s)
{
char **ss = l_keywds;
int i = 1;
char *cp = s;
/* Get token length. */
while (++cp, isidchr(*cp))
i++;
while (cp = *ss++) {
if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
return (i);
}
return (0);
}