/* input_file.c - Deal with Input Files -
- Copyright (C) 1987, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GNU General Public License for more details.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
-/*
- * 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!
- */
-
-#ifdef USG
-#define setbuffer(stream, buf, size) setvbuf((stream), (buf), _IOFBF, (size))
-#endif
+/* 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 <assert.h>
#include <string.h>
-
#include "as.h"
#include "input-file.h"
+#include "safe-ctype.h"
+
+static int input_file_get PARAMS ((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.
- */
+ preprocessed by app. It is zero if the file can be read straight in. */
int preprocess = 0;
-/*
- * This code opens a file, then delivers BUFFER_SIZE character
- * chunks of the file on demand.
- * BUFFER_SIZE is supposed to be a number chosen for speed.
- * The caller only asks once what BUFFER_SIZE is, and asks before
- * the nature of the input files (if any) is known.
- */
+/* This code opens a file, then delivers BUFFER_SIZE character
+ chunks of the file on demand.
+ BUFFER_SIZE is supposed to be a number chosen for speed.
+ The caller only asks once what BUFFER_SIZE is, and asks before
+ the nature of the input files (if any) is known. */
#define BUFFER_SIZE (32 * 1024)
-/*
- * We use static data: the data area is not sharable.
- */
+/* We use static data: the data area is not sharable. */
-FILE *f_in;
-/* static JF remove static so app.c can use file_name */
-char *file_name;
+static FILE *f_in;
+static char *file_name;
/* Struct for saving the state of this module for file includes. */
struct saved_file
{
- FILE *f_in;
- char *file_name;
- int preprocess;
- char *app_save;
+ FILE * f_in;
+ char * file_name;
+ int preprocess;
+ char * app_save;
};
\f
-/* These hooks accomodate most operating systems. */
+/* These hooks accomodate most operating systems. */
-void
+void
input_file_begin ()
{
f_in = (FILE *) 0;
}
-void
+void
input_file_end ()
{
}
-/* Return BUFFER_SIZE. */
-int
+/* Return BUFFER_SIZE. */
+unsigned int
input_file_buffer_size ()
{
return (BUFFER_SIZE);
}
-int
+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 ()
{
if (preprocess)
saved->app_save = app_push ();
- input_file_begin (); /* Initialize for new file */
+ /* Initialize for new file. */
+ input_file_begin ();
return (char *) saved;
}
{
register struct saved_file *saved = (struct saved_file *) arg;
- input_file_end (); /* Close out old file */
+ input_file_end (); /* Close out old file. */
f_in = saved->f_in;
file_name = saved->file_name;
free (arg);
}
\f
-#ifdef DONTDEF /* JF save old version in case we need it */
-void
-input_file_open (filename, preprocess, debugging)
- char *filename; /* "" means use stdin. Must not be 0. */
- int preprocess; /* TRUE if needs app. */
- int debugging; /* TRUE if we are debugging assembler. */
-{
- assert (filename != 0); /* Filename may not be NULL. */
- if (filename[0])
- { /* We have a file name. Suck it and see. */
- file_handle = open (filename, O_RDONLY, 0);
- file_name = filename;
- }
- else
- { /* use stdin for the input file. */
- file_handle = fileno (stdin);
- file_name = "{standard input}"; /* For error messages. */
- }
- if (file_handle < 0)
- as_perror ("Can't open %s for reading", file_name);
- if (preprocess)
- {
- /*
- * This code was written in haste for a frobbed BSD 4.2.
- * I have a flight to catch: will someone please do proper
- * error checks? - Dean.
- */
- int pid;
- char temporary_file_name[12];
- int fd;
- union wait status;
-
- (void) strcpy (temporary_file_name, "#appXXXXXX");
- (void) mktemp (temporary_file_name);
- pid = vfork ();
- if (pid == -1)
- {
- as_perror ("Vfork failed", file_name);
- _exit (144);
- }
- if (pid == 0)
- {
- (void) dup2 (file_handle, fileno (stdin));
- fd = open (temporary_file_name, O_WRONLY + O_TRUNC + O_CREAT, 0666);
- if (fd == -1)
- {
- (void) write (2, "Can't open temporary\n", 21);
- _exit (99);
- }
- (void) dup2 (fd, fileno (stdout));
- /* JF for testing #define PREPROCESSOR "/lib/app" */
-#define PREPROCESSOR "./app"
- execl (PREPROCESSOR, PREPROCESSOR, 0);
- execl ("app", "app", 0);
- (void) write (2, "Exec of app failed. Get help.\n", 31);
- (void) unlink (temporary_file_name);
- _exit (11);
- }
- (void) wait (&status);
- if (status.w_status & 0xFF00) /* JF was 0xF000, was wrong */
- {
- file_handle = -1;
- as_bad ("Can't preprocess file \"%s\", status = %xx", file_name, status.w_status);
- }
- else
- {
- file_handle = open (temporary_file_name, O_RDONLY, 0);
- if (!debugging && unlink (temporary_file_name))
- as_perror ("Can't delete temp file %s", temporary_file_name);
- }
- if (file_handle == -1)
- as_perror ("Can't retrieve temp file %s", temporary_file_name);
- }
-}
-
-#else
-
void
input_file_open (filename, pre)
- char *filename; /* "" means use stdin. Must not be 0. */
+ char *filename; /* "" means use stdin. Must not be 0. */
int pre;
{
int c;
preprocess = pre;
- assert (filename != 0); /* Filename may not be NULL. */
+ assert (filename != 0); /* Filename may not be NULL. */
if (filename[0])
- { /* We have a file name. Suck it and see. */
- f_in = fopen (filename, "r");
+ { /* We have a file name. Suck it and see. */
+ f_in = fopen (filename, FOPEN_RT);
file_name = filename;
}
else
- { /* use stdin for the input file. */
+ { /* use stdin for the input file. */
f_in = stdin;
- file_name = "{standard input}"; /* For error messages. */
+ file_name = _("{standard input}"); /* For error messages. */
}
if (f_in == (FILE *) 0)
{
- as_perror ("Can't open %s for reading", file_name);
+ as_bad (_("can't open %s for reading"), file_name);
+ as_perror ("%s", file_name);
return;
}
-#ifdef _IOFBF
- /* Ask stdio to buffer our input at BUFFER_SIZE, with a dynamically
- allocated buffer. */
- setvbuf (f_in, (char *) NULL, _IOFBF, BUFFER_SIZE);
-#endif /* VMS */
-
c = getc (f_in);
if (c == '#')
- { /* Begins with comment, may not want to preprocess */
+ {
+ /* Begins with comment, may not want to preprocess. */
c = getc (f_in);
if (c == 'N')
{
fgets (buf, 80, f_in);
- if (!strcmp (buf, "O_APP\n"))
+ if (!strncmp (buf, "O_APP", 5) && ISSPACE (buf[5]))
preprocess = 0;
if (!strchr (buf, '\n'))
- ungetc ('#', f_in); /* It was longer */
+ ungetc ('#', f_in); /* It was longer. */
+ else
+ ungetc ('\n', f_in);
+ }
+ else if (c == 'A')
+ {
+ fgets (buf, 80, f_in);
+ if (!strncmp (buf, "PP", 2) && ISSPACE (buf[2]))
+ preprocess = 1;
+ if (!strchr (buf, '\n'))
+ ungetc ('#', f_in);
else
ungetc ('\n', f_in);
}
}
else
ungetc (c, f_in);
-
-#ifdef DONTDEF
- if (preprocess)
- {
- char temporary_file_name[17];
- FILE *f_out;
-
- (void) strcpy (temporary_file_name, "/tmp/#appXXXXXX");
- (void) mktemp (temporary_file_name);
- f_out = fopen (temporary_file_name, "w+");
- if (f_out == (FILE *) 0)
- as_perror ("Can't open temp file %s", temporary_file_name);
-
- /* JF this will have to be moved on any system that
- does not support removal of open files. */
- (void) unlink (temporary_file_name); /* JF do it NOW */
- do_scrub (f_in, f_out);
- (void) fclose (f_in); /* All done with it */
- (void) rewind (f_out);
- f_in = f_out;
- }
-#endif
}
-#endif
-
/* Close input file. */
-void
+
+void
input_file_close ()
{
+ /* Don't close a null file pointer. */
if (f_in != NULL)
- {
- fclose (f_in);
- } /* don't close a null file pointer */
+ fclose (f_in);
+
f_in = 0;
-} /* input_file_close() */
+}
+
+/* This function is passed to do_scrub_chars. */
+
+static int
+input_file_get (buf, buflen)
+ 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);
+ 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. */
+ char *where; /* Where to place 1st character of new buffer. */
{
- char *return_value; /* -> Last char of what we read, + 1. */
+ char *return_value; /* -> Last char of what we read, + 1. */
register int size;
if (f_in == (FILE *) 0)
return 0;
- /*
- * fflush (stdin); could be done here if you want to synchronise
- * stdin and stdout, for the case where our input file is stdin.
- * Since the assembler shouldn't do any output to stdout, we
- * don't bother to synch output and input.
- */
+ /* fflush (stdin); could be done here if you want to synchronise
+ stdin and stdout, for the case where our input file is stdin.
+ Since the assembler shouldn't do any output to stdout, we
+ don't bother to synch output and input. */
if (preprocess)
- {
- char *p;
- int n;
- int ch;
- extern FILE *scrub_file;
-
- scrub_file = f_in;
- for (p = where, n = BUFFER_SIZE; n; --n)
- {
-
- ch = do_scrub_next_char (scrub_from_file, scrub_to_file);
- if (ch == EOF)
- break;
- *p++ = ch;
- }
- size = BUFFER_SIZE - n;
- }
+ size = do_scrub_chars (input_file_get, where, BUFFER_SIZE);
else
size = fread (where, sizeof (char), BUFFER_SIZE, f_in);
if (size < 0)
{
- as_perror ("Can't read from %s", file_name);
+ as_perror (_("Can't read from %s"), file_name);
size = 0;
}
if (size)
else
{
if (fclose (f_in))
- as_perror ("Can't close %s", file_name);
+ as_perror (_("Can't close %s"), file_name);
f_in = (FILE *) 0;
return_value = 0;
}
- return (return_value);
-}
-/* end of input-file.c */
+ return return_value;
+}
projects / deliverable / binutils-gdb.git / blobdiff