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libfile.h
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1992-08-17
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/* libfile.h: read auxiliary data files.
Copyright (C) 1992 Free Software Foundation, Inc.
This program 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)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef LIBFILE_H
#define LIBFILE_H
#include "types.h"
/* Open (close) the file `HEAD.SUFFIX' using the library path. Give a
fatal error if the file cannot be (has not been) opened. Only one
file can be open at a time. `libfile_start' returns the resulting
opened FILE structure, although this is commonly ignored by the
caller, in favor of using `libfile_line' (declared below) to read
from the file. */
extern FILE *libfile_start (string head, string suffix);
extern void libfile_close (void);
/* The name (line number) of the currently open library file, or NULL (0). */
extern string libfilename (void);
extern unsigned libfile_linenumber (void);
/* An abbreviation for common error messages. */
#define LIBFILE_ERROR1(fmt, e1) \
FATAL3 ("%s:%u: " fmt, libfilename (), libfile_linenumber (), e1);
#define LIBFILE_ERROR2(fmt, e1, e2) \
FATAL4 ("%s:%u: " fmt, libfilename (), libfile_linenumber (), e1, e2);
#define LIBFILE_WARN1(fmt, e1) \
fprintf (stderr, "%s:%u: " fmt "\n", libfilename (), libfile_linenumber (),\
e1)
#define LIBFILE_WARN2(fmt, e1, e2) \
fprintf (stderr, "%s:%u: " fmt "\n", libfilename (), libfile_linenumber (),\
e1, e2)
/* Return the next non-blank non-comment line in the currently open
library file, or NULL if at EOF. The terminating newline and any
trailing comment are also removed. */
extern string libfile_line (void);
#endif /* not LIBFILE_H */