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Improvements from kristaps@:
(1) Make the database format simpler and smaller by
- storing the file type as a single character and
- storing paths relative to the dir containing the database.
The latter allows to move trees around.
Both together typically save 15-25% of the index size.
(2) Make sure apropos(1) "any" really covers all search keys.
(3) Make manpath_parseline() static, drop manpath_parseconf() completely.

/*	$Id: apropos_db.h,v 1.10 2011/12/19 02:26:33 schwarze Exp $ */
/*
 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#ifndef APROPOS_H
#define APROPOS_H

enum	restype {
	RESTYPE_MAN, /* man(7) file */
	RESTYPE_MDOC, /* mdoc(7) file */
	RESTYPE_CAT /* pre-formatted file */
};

struct	res {
	enum restype	 type; /* input file type */
	char		*file; /* file in file-system */
	char		*cat; /* category (3p, 3, etc.) */
	char		*title; /* title (FOO, etc.) */
	char		*arch; /* arch (or empty string) */
	char		*desc; /* description (from Nd) */
	unsigned int	 rec; /* record in index */
	/*
	 * The index volume.  This indexes into the array of directories
	 * searched for manual page databases.
	 */
	unsigned int	 volume;
};

struct	opts {
	const char	*arch; /* restrict to architecture */
	const char	*cat; /* restrict to manual section */
};

__BEGIN_DECLS

struct	expr;

int	 	 apropos_search(int, char **, const struct opts *,
			const struct expr *, size_t, void *,
			void (*)(struct res *, size_t, void *));
struct	expr	*exprcomp(int, char *[], size_t *);
void		 exprfree(struct expr *);
struct	expr	*termcomp(int, char *[], size_t *);

__END_DECLS

#endif /*!APROPOS_H*/