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/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* 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.
*/
/* te.c: error message control, input line count */
#include "t..c"
#include <locale.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
void
error(char *s)
{
(void) fprintf(stderr, gettext("\n%s: line %d: %s\n"), ifile, iline, s);
(void) fprintf(stderr, gettext("tbl quits\n"));
exit(1);
}
char *
gets1(char *s, int len)
{
char *p;
int nbl;
while(len > 0)
{
iline++;
while ((p = fgets(s,len,tabin))==0)
{
if (swapin()==0)
return((char *)0);
}
while (*s) s++;
s--;
if (*s == '\n') {
*s-- = '\0';
} else {
if (!feof(tabin)) {
if (ferror(tabin))
error(strerror(errno));
else
error(gettext("Line too long"));
}
}
for(nbl=0; *s == '\\' && s>p; s--)
nbl++;
if (linstart && nbl % 2) /* fold escaped nl if in table */
{
s++;
len -= s - p;
continue;
}
break;
}
return(p);
}
# define BACKMAX 500
char backup[BACKMAX];
char *backp = backup;
void
un1getc(int c)
{
if (c=='\n')
iline--;
*backp++ = c;
if (backp >= backup+BACKMAX)
error(gettext("too much backup"));
}
int
get1char(void)
{
int c;
if (backp>backup)
c = *--backp;
else
c=getc(tabin);
if (c== EOF) /* EOF */
{
if (swapin() ==0)
error(gettext("unexpected EOF"));
c = getc(tabin);
}
if (c== '\n')
iline++;
return(c);
}
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