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/*
* Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#include "e.h"
#include <stdlib.h>
#include <locale.h>
#define MAXLINE 8192 /* maximum input line */
char in[MAXLINE+1]; /* input buffer */
int noeqn;
void error(int, char *, char *);
static void do_inline(void);
int eqn(int, char *[]);
static int getaline(char *);
static void init(void);
void nrwid(int, int, int);
int oalloc(void);
void ofree(int);
static void setfile(int, char *[]);
void setps(int);
int
main(int argc, char *argv[])
{
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
(void) textdomain(TEXT_DOMAIN);
return (eqn(argc, argv));
}
int
eqn(int argc, char *argv[])
{
int i, type;
setfile(argc, argv);
init_tbl(); /* install keywords in tables */
while ((type = getaline(in)) != EOF) {
eqline = linect;
if (in[0] == '.' && in[1] == 'E' && in[2] == 'Q') {
for (i = 11; i < 100; used[i++] = 0)
;
printf("%s", in);
printf(".nr 99 \\n(.s\n.nr 98 \\n(.f\n");
markline = 0;
init();
yyparse();
if (eqnreg > 0) {
printf(".nr %d \\w'\\*(%d'\n", eqnreg, eqnreg);
/*
* printf(".if \\n(%d>\\n(.l .tm too-long eqn,
* file %s, between lines %d-%d\n",
* eqnreg, svargv[ifile], eqline, linect);
*/
/* for -ms macros */
printf(".nr MK %d\n", markline);
printf(".if %d>\\n(.v .ne %du\n", eqnht, eqnht);
printf(".rn %d 10\n", eqnreg);
if (!noeqn) printf("\\*(10\n");
}
printf(".ps \\n(99\n.ft \\n(98\n");
printf(".EN");
if (lastchar == EOF) {
putchar('\n');
break;
}
if (putchar(lastchar) != '\n')
while (putchar(gtc()) != '\n')
;
} else if (type == lefteq)
do_inline();
else
printf("%s", in);
}
return (0);
}
static int
getaline(char *s)
{
int c;
while ((*s++ = c = gtc()) != '\n' && c != EOF && c != lefteq)
if (s >= in+MAXLINE) {
error(!FATAL, gettext(
"input line too long: %.20s\n"), in);
in[MAXLINE] = '\0';
break;
}
if (c == lefteq)
s--;
*s++ = '\0';
return (c);
}
static void
do_inline(void)
{
int ds;
printf(".nr 99 \\n(.s\n.nr 98 \\n(.f\n");
ds = oalloc();
printf(".rm %d \n", ds);
do {
if (*in)
printf(".as %d \"%s\n", ds, in);
init();
yyparse();
if (eqnreg > 0) {
printf(".as %d \\*(%d\n", ds, eqnreg);
ofree(eqnreg);
}
printf(".ps \\n(99\n.ft \\n(98\n");
} while (getaline(in) == lefteq);
if (*in)
printf(".as %d \"%s", ds, in);
printf(".ps \\n(99\n.ft \\n(98\n");
printf("\\*(%d\n", ds);
ofree(ds);
}
void
putout(int p1)
{
extern int gsize, gfont;
int before, after;
if (dbg)
printf(".\tanswer <- S%d, h=%d,b=%d\n", p1, eht[p1], ebase[p1]);
eqnht = eht[p1];
printf(".ds %d \\x'0'", p1);
/* suppposed to leave room for a subscript or superscript */
#ifndef NEQN
before = eht[p1] - ebase[p1] - VERT(EM(1.2, ps));
#else /* NEQN */
before = eht[p1] - ebase[p1] - VERT(3); /* 3 = 1.5 lines */
#endif /* NEQN */
if (spaceval != NULL)
printf("\\x'0-%s'", spaceval);
else if (before > 0)
printf("\\x'0-%du'", before);
printf("\\f%c\\s%d\\*(%d%s\\s\\n(99\\f\\n(98",
gfont, gsize, p1, rfont[p1] == ITAL ? "\\|" : "");
#ifndef NEQN
after = ebase[p1] - VERT(EM(0.2, ps));
#else /* NEQN */
after = ebase[p1] - VERT(1);
#endif /* NEQN */
if (spaceval == NULL && after > 0)
printf("\\x'%du'", after);
putchar('\n');
eqnreg = p1;
if (spaceval != NULL) {
free(spaceval);
spaceval = NULL;
}
}
int
max(int i, int j)
{
return (i > j ? i : j);
}
int
oalloc(void)
{
int i;
char ebuf[3];
for (i = 11; i < 100; i++)
if (used[i]++ == 0)
return (i);
(void) snprintf(ebuf, sizeof (ebuf), "%d", i);
error(FATAL, gettext("no eqn strings left"), ebuf);
return (0);
}
void
ofree(int n)
{
used[n] = 0;
}
void
setps(int p)
{
printf(".ps %d\n", EFFPS(p));
}
void
nrwid(int n1, int p, int n2)
{
printf(".nr %d \\w'\\s%d\\*(%d'\n", n1, EFFPS(p), n2);
}
static void
setfile(int argc, char *argv[])
{
static char *nullstr = "-";
svargc = --argc;
svargv = argv;
while (svargc > 0 && svargv[1][0] == '-') {
switch (svargv[1][1]) {
case 'd': lefteq = svargv[1][2]; righteq = svargv[1][3]; break;
case 's': gsize = atoi(&svargv[1][2]); break;
case 'p': deltaps = atoi(&svargv[1][2]); break;
case 'f': gfont = svargv[1][2]; break;
case 'e': noeqn++; break;
case 0: goto endargs;
default: dbg = 1;
}
svargc--;
svargv++;
}
endargs:
ifile = 1;
linect = 1;
if (svargc <= 0) {
curfile = stdin;
svargv[1] = nullstr;
}
else
openinfile(); /* opens up the first input file */
}
void
yyerror(void)
{
}
static void
init(void)
{
ct = 0;
ps = gsize;
ft = gfont;
setps(ps);
printf(".ft %c\n", ft);
}
void
error(int fatal, char *s1, char *s2)
{
if (fatal > 0)
printf(gettext("eqn fatal error: "));
printf(s1, s2);
printf(gettext("\nfile %s, between lines %d and %d\n"),
svargv[ifile], eqline, linect);
fprintf(stderr, gettext("eqn: "));
if (fatal > 0)
fprintf(stderr, gettext("fatal error: "));
fprintf(stderr, s1, s2);
fprintf(stderr, gettext("\nfile %s, between lines %d and %d\n"),
svargv[ifile], eqline, linect);
if (fatal > 0)
exit(1);
}
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