/* input_file.c - Deal with Input Files -
- Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001, 2003
+ Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001,
+ 2002, 2003, 2005, 2006, 2007
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,
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
/* Confines all details of reading source bytes to this module.
All O/S specific crocks should live here.
What we lose in "efficiency" we gain in modularity.
Note we don't need to #include the "as.h" file. No common coupling! */
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
#include "as.h"
#include "input-file.h"
#include "safe-ctype.h"
-static int input_file_get PARAMS ((char *, int));
+static int input_file_get (char *, int);
/* This variable is non-zero if the file currently being read should be
preprocessed by app. It is zero if the file can be read straight in. */
/* These hooks accommodate most operating systems. */
void
-input_file_begin ()
+input_file_begin (void)
{
f_in = (FILE *) 0;
}
void
-input_file_end ()
+input_file_end (void)
{
}
/* Return BUFFER_SIZE. */
unsigned int
-input_file_buffer_size ()
+input_file_buffer_size (void)
{
return (BUFFER_SIZE);
}
-int
-input_file_is_open ()
-{
- return f_in != (FILE *) 0;
-}
-
/* Push the state of our input, returning a pointer to saved info that
can be restored with input_file_pop (). */
char *
-input_file_push ()
+input_file_push (void)
{
register struct saved_file *saved;
}
void
-input_file_pop (arg)
- char *arg;
+input_file_pop (char *arg)
{
register struct saved_file *saved = (struct saved_file *) arg;
}
\f
void
-input_file_open (filename, pre)
- char *filename; /* "" means use stdin. Must not be 0. */
- int pre;
+input_file_open (char *filename, /* "" means use stdin. Must not be 0. */
+ int pre)
{
int c;
char buf[80];
preprocess = pre;
- assert (filename != 0); /* Filename may not be NULL. */
+ gas_assert (filename != 0); /* Filename may not be NULL. */
if (filename[0])
{
- struct stat statbuf;
-
- if (stat (filename, &statbuf) < 0)
- {
- as_bad (_("%s: No such file"), filename);
- return;
- }
- else if (! S_ISREG (statbuf.st_mode))
- {
- as_bad (_("'%s' is not an ordinary file"), filename);
- return;
- }
-
f_in = fopen (filename, FOPEN_RT);
file_name = filename;
}
file_name = _("{standard input}");
}
- if (f_in == (FILE *) 0)
+ if (f_in == NULL)
{
- as_bad (_("can't open %s for reading"), file_name);
- as_perror ("%s", file_name);
+ as_bad (_("can't open %s for reading: %s"),
+ file_name, xstrerror (errno));
return;
}
c = getc (f_in);
+
+ if (ferror (f_in))
+ {
+ as_bad (_("can't read from %s: %s"),
+ file_name, xstrerror (errno));
+
+ fclose (f_in);
+ f_in = NULL;
+ return;
+ }
+
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);
/* Close input file. */
void
-input_file_close ()
+input_file_close (void)
{
/* Don't close a null file pointer. */
if (f_in != NULL)
/* This function is passed to do_scrub_chars. */
static int
-input_file_get (buf, buflen)
- char *buf;
- int buflen;
+input_file_get (char *buf, int buflen)
{
int size;
size = fread (buf, sizeof (char), buflen, f_in);
if (size < 0)
{
- as_perror (_("Can't read from %s"), file_name);
+ as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));
size = 0;
}
return size;
/* Read a buffer from the input file. */
char *
-input_file_give_next_buffer (where)
- char *where; /* Where to place 1st character of new buffer. */
+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;
size = fread (where, sizeof (char), BUFFER_SIZE, f_in);
if (size < 0)
{
- as_perror (_("Can't read from %s"), file_name);
+ as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));
size = 0;
}
if (size)
else
{
if (fclose (f_in))
- as_perror (_("Can't close %s"), file_name);
+ as_warn (_("can't close %s: %s"), file_name, xstrerror (errno));
+
f_in = (FILE *) 0;
return_value = 0;
}
projects / thirdparty / binutils-gdb.git / blobdiff