input-file.h

早期freebsd实现

/* input_file.h header for input-file.c
   Copyright (C) 1987 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 1, or (at your option)
any later version.

GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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.  */

/*"input_file.c":Operating-system dependant functions to read source files.*/


/*
 * No matter what the operating system, this module must provide the
 * following services to its callers.
 *
 * input_file_begin()			Call once before anything else.
 *
 * input_file_end()			Call once after everything else.
 *
 * input_file_buffer_size()		Call anytime. Returns largest possible
 *					delivery from
 *					input_file_give_next_buffer().
 *
 * input_file_open(name)		Call once for each input file.
 *
 * input_file_give_next_buffer(where)	Call once to get each new buffer.
 *					Return 0: no more chars left in file,
 *					   the file has already been closed.
 *					Otherwise: return a pointer to just
 *					   after the last character we read
 *					   into the buffer.
 *					If we can only read 0 characters, then
 *					end-of-file is faked.
 *
 * All errors are reported (using as_perror) so caller doesn't have to think
 * about I/O errors. No I/O errors are fatal: an end-of-file may be faked.
 */

void	input_file_begin();
void	input_file_end();
int	input_file_buffer_size();
int	input_file_is_open();
void	input_file_open();
char *	input_file_give_next_buffer();

/* end: input_file.h */