/* UI_FILE - a generic STDIO like output stream.
- Copyright (C) 1999, 2000, 2001, 2002, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2002, 2007-2012 Free Software Foundation, Inc.
This file is part of GDB.
static ui_file_delete_ftype null_file_delete;
static ui_file_rewind_ftype null_file_rewind;
static ui_file_put_ftype null_file_put;
+static ui_file_fseek_ftype null_file_fseek;
struct ui_file
{
ui_file_isatty_ftype *to_isatty;
ui_file_rewind_ftype *to_rewind;
ui_file_put_ftype *to_put;
+ ui_file_fseek_ftype *to_fseek;
void *to_data;
};
int ui_file_magic;
set_ui_file_isatty (file, null_file_isatty);
set_ui_file_rewind (file, null_file_rewind);
set_ui_file_put (file, null_file_put);
+ set_ui_file_fseek (file, null_file_fseek);
return file;
}
return;
}
+static int
+null_file_fseek (struct ui_file *stream, long offset, int whence)
+{
+ errno = EBADF;
+
+ return -1;
+}
+
void *
ui_file_data (struct ui_file *file)
{
return file->to_read (file, buf, length_buf);
}
+int
+ui_file_fseek (struct ui_file *file, long offset, int whence)
+{
+ return file->to_fseek (file, offset, whence);
+}
+
void
fputs_unfiltered (const char *buf, struct ui_file *file)
{
}
void
-set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush)
+set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush_ptr)
{
- file->to_flush = flush;
+ file->to_flush = flush_ptr;
}
void
-set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty)
+set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty_ptr)
{
- file->to_isatty = isatty;
+ file->to_isatty = isatty_ptr;
}
void
-set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind)
+set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind_ptr)
{
- file->to_rewind = rewind;
+ file->to_rewind = rewind_ptr;
}
void
-set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put)
+set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put_ptr)
{
- file->to_put = put;
+ file->to_put = put_ptr;
}
void
set_ui_file_write (struct ui_file *file,
- ui_file_write_ftype *write)
+ ui_file_write_ftype *write_ptr)
{
- file->to_write = write;
+ file->to_write = write_ptr;
}
void
set_ui_file_write_async_safe (struct ui_file *file,
- ui_file_write_async_safe_ftype *write_async_safe)
+ ui_file_write_async_safe_ftype *write_async_safe_ptr)
{
- file->to_write_async_safe = write_async_safe;
+ file->to_write_async_safe = write_async_safe_ptr;
}
void
-set_ui_file_read (struct ui_file *file, ui_file_read_ftype *read)
+set_ui_file_read (struct ui_file *file, ui_file_read_ftype *read_ptr)
{
- file->to_read = read;
+ file->to_read = read_ptr;
}
void
-set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs)
+set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs_ptr)
{
- file->to_fputs = fputs;
+ file->to_fputs = fputs_ptr;
+}
+
+void
+set_ui_file_fseek (struct ui_file *file, ui_file_fseek_ftype *fseek_ptr)
+{
+ file->to_fseek = fseek_ptr;
}
void
set_ui_file_data (struct ui_file *file, void *data,
- ui_file_delete_ftype *delete)
+ ui_file_delete_ftype *delete_ptr)
{
file->to_data = data;
- file->to_delete = delete;
+ file->to_delete = delete_ptr;
}
/* ui_file utility function for converting a ``struct ui_file'' into
static ui_file_delete_ftype stdio_file_delete;
static struct ui_file *stdio_file_new (FILE *file, int close_p);
static ui_file_flush_ftype stdio_file_flush;
+static ui_file_fseek_ftype stdio_file_fseek;
static int stdio_file_magic;
set_ui_file_fputs (ui_file, stdio_file_fputs);
set_ui_file_read (ui_file, stdio_file_read);
set_ui_file_isatty (ui_file, stdio_file_isatty);
+ set_ui_file_fseek (ui_file, stdio_file_fseek);
return ui_file;
}
_("stdio_file_write: bad magic number"));
/* Calling error crashes when we are called from the exception framework. */
if (fwrite (buf, length_buf, 1, stdio->file))
- ;
+ {
+ /* Nothing. */
+ }
}
static void
return;
}
+ /* This is written the way it is to avoid a warning from gcc about not using the
+ result of write (since it can be declared with attribute warn_unused_result).
+ Alas casting to void doesn't work for this. */
if (write (stdio->fd, buf, length_buf))
- ;
+ {
+ /* Nothing. */
+ }
}
static void
_("stdio_file_fputs: bad magic number"));
/* Calling error crashes when we are called from the exception framework. */
if (fputs (linebuffer, stdio->file))
- ;
+ {
+ /* Nothing. */
+ }
}
static int
return (isatty (stdio->fd));
}
+static int
+stdio_file_fseek (struct ui_file *file, long offset, int whence)
+{
+ struct stdio_file *stdio = ui_file_data (file);
+
+ if (stdio->magic != &stdio_file_magic)
+ internal_error (__FILE__, __LINE__,
+ _("stdio_file_fseek: bad magic number"));
+
+ return fseek (stdio->file, offset, whence);
+}
+
/* Like fdopen(). Create a ui_file from a previously opened FILE. */
struct ui_file *