io.h

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#ifndef IO_H
#define IO_H

/***************************************************************************
 *   Copyright (C) 2004, 2006 Symbian Software Ltd.                        *
 *   All rights reserved.                                                  *
 *   Copyright (C) 2007-2011 Mike Kinghan, imk@strudl.org                  *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed originally by Mike Kinghan, imk@strudl.org                *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
 *                                                                         *
 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Symbian Software Ltd. nor the names of its        *
 *   contributors may be used to endorse or promote products derived from  *
 *   this software without specific prior written permission.              *
 *                                                                         *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     *
 *   LIMITED TO, THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS    *
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE        *
 *   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,   *
 *   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,  *
 *   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS *
 *   OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED    *
 *   AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*
 *   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF *
 *   THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH  *
 *   DAMAGE.                                                               *
 *                                                                         *
 **************************************************************************/
#include <stdio.h>

#define STDIN_NAME "[stdin]"

#define LINE_START      GET_PUBLIC(io,line_start)

#define LINE_END        (GET_PUBLIC(io,line_start) + GET_PUBLIC(io,line_len))

#define LINE_OFF(addr) (addr - LINE_START)

#define INSOURCE (GET_PUBLIC(io,line_num) != 0)


extern
char * read_filename(void);

extern
FILE * open_file(const char *file, const char *mode);

extern void
open_io(char const *filename);

extern void
close_io(int error);

extern void
close_input(void);

extern bool
get_line(void);

extern char *
read_more(char const *readpos);

extern bool
input_opened(void);

extern void
ensure_buf(size_t extra);

extern void
save_read_pos(char const *cp);

extern char *
saved_read_pos(void);

extern void
io_toplevel(void);

extern size_t
read_offset(char const *readpos);

extern char *
read_pos(size_t readoff);


/*@(*/

PUBLIC_STATE_DEF(io)
{
    int line_num;  
    const char *filename; 
    char *line_start; 
    char *pristine_line; 
    size_t line_len;
    FILE * output;      
    unsigned extension_lines; 
}
PUBLIC_STATE_T(io);

/*@(*/
IMPORT(io);
#endif /* EOF*/