/* input_file.c - Deal with Input Files -
Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001,
- 2002, 2003, 2005, 2006
+ 2002, 2003, 2005, 2006, 2007, 2009
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
preprocess = pre;
- assert (filename != 0); /* Filename may not be NULL. */
+ gas_assert (filename != 0); /* Filename may not be NULL. */
if (filename[0])
{
f_in = fopen (filename, FOPEN_RT);
return;
}
+ /* Check for an empty input file. */
+ if (feof (f_in))
+ {
+ fclose (f_in);
+ f_in = NULL;
+ return;
+ }
+ gas_assert (c != EOF);
+
if (c == '#')
{
/* Begins with comment, may not want to preprocess. */
c = getc (f_in);
if (c == 'N')
{
- fgets (buf, 80, f_in);
- if (!strncmp (buf, "O_APP", 5) && ISSPACE (buf[5]))
+ if (fgets (buf, sizeof (buf), f_in)
+ && !strncmp (buf, "O_APP", 5) && ISSPACE (buf[5]))
preprocess = 0;
if (!strchr (buf, '\n'))
ungetc ('#', f_in); /* It was longer. */
}
else if (c == 'A')
{
- fgets (buf, 80, f_in);
- if (!strncmp (buf, "PP", 2) && ISSPACE (buf[2]))
+ if (fgets (buf, sizeof (buf), f_in)
+ && !strncmp (buf, "PP", 2) && ISSPACE (buf[2]))
preprocess = 1;
if (!strchr (buf, '\n'))
ungetc ('#', f_in);
{
int size;
+ if (feof (f_in))
+ return 0;
+
size = fread (buf, sizeof (char), buflen, f_in);
if (size < 0)
{
input_file_give_next_buffer (char *where /* Where to place 1st character of new buffer. */)
{
char *return_value; /* -> Last char of what we read, + 1. */
- register int size;
+ int size;
if (f_in == (FILE *) 0)
return 0;
if (preprocess)
size = do_scrub_chars (input_file_get, where, BUFFER_SIZE);
else
- size = fread (where, sizeof (char), BUFFER_SIZE, f_in);
+ {
+ if (feof (f_in))
+ size = 0;
+ else
+ size = fread (where, sizeof (char), BUFFER_SIZE, f_in);
+ }
+
if (size < 0)
{
as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));