/*	$Id$ */
/*
 * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2013, 2014, 2016 Ingo Schwarze <schwarze@openbsd.org>
 *
 * 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.
 */

#define	MANDOC_DB	 "mandoc.new.db"
#define	MANDOCDB_MAGIC	 0x3a7d0cdb
#define	MANDOCDB_VERSION 0  /* XXX Start counting in production. */

#define	MACRO_MAX	 36
#define	KEY_Nd		 39
#define	KEY_MAX		 40

#define	TYPE_arch	 0x0000000000000001ULL
#define	TYPE_sec	 0x0000000000000002ULL
#define	TYPE_Xr		 0x0000000000000004ULL
#define	TYPE_Ar		 0x0000000000000008ULL
#define	TYPE_Fa		 0x0000000000000010ULL
#define	TYPE_Fl		 0x0000000000000020ULL
#define	TYPE_Dv		 0x0000000000000040ULL
#define	TYPE_Fn		 0x0000000000000080ULL
#define	TYPE_Ic		 0x0000000000000100ULL
#define	TYPE_Pa		 0x0000000000000200ULL
#define	TYPE_Cm		 0x0000000000000400ULL
#define	TYPE_Li		 0x0000000000000800ULL
#define	TYPE_Em		 0x0000000000001000ULL
#define	TYPE_Cd		 0x0000000000002000ULL
#define	TYPE_Va		 0x0000000000004000ULL
#define	TYPE_Ft		 0x0000000000008000ULL
#define	TYPE_Tn		 0x0000000000010000ULL
#define	TYPE_Er		 0x0000000000020000ULL
#define	TYPE_Ev		 0x0000000000040000ULL
#define	TYPE_Sy		 0x0000000000080000ULL
#define	TYPE_Sh		 0x0000000000100000ULL
#define	TYPE_In		 0x0000000000200000ULL
#define	TYPE_Ss		 0x0000000000400000ULL
#define	TYPE_Ox		 0x0000000000800000ULL
#define	TYPE_An		 0x0000000001000000ULL
#define	TYPE_Mt		 0x0000000002000000ULL
#define	TYPE_St		 0x0000000004000000ULL
#define	TYPE_Bx		 0x0000000008000000ULL
#define	TYPE_At		 0x0000000010000000ULL
#define	TYPE_Nx		 0x0000000020000000ULL
#define	TYPE_Fx		 0x0000000040000000ULL
#define	TYPE_Lk		 0x0000000080000000ULL
#define	TYPE_Ms		 0x0000000100000000ULL
#define	TYPE_Bsx	 0x0000000200000000ULL
#define	TYPE_Dx		 0x0000000400000000ULL
#define	TYPE_Rs		 0x0000000800000000ULL
#define	TYPE_Vt		 0x0000001000000000ULL
#define	TYPE_Lb		 0x0000002000000000ULL
#define	TYPE_Nm		 0x0000004000000000ULL
#define	TYPE_Nd		 0x0000008000000000ULL

#define	NAME_SYN	 0x0000004000000001ULL
#define	NAME_FIRST	 0x0000004000000004ULL
#define	NAME_TITLE	 0x0000004000000006ULL
#define	NAME_HEAD	 0x0000004000000008ULL
#define	NAME_FILE	 0x0000004000000010ULL
#define	NAME_MASK	 0x000000000000001fULL

enum	form {
	FORM_SRC = 1,	/* Format is mdoc(7) or man(7). */
	FORM_CAT,	/* Manual page is preformatted. */
	FORM_NONE	/* Format is unknown. */
};

enum	argmode {
	ARG_FILE = 0,
	ARG_NAME,
	ARG_WORD,
	ARG_EXPR
};

struct	manpage {
	char		*file; /* to be prefixed by manpath */
	char		*names; /* a list of names with sections */
	char		*output; /* user-defined additional output */
	size_t		 ipath; /* number of the manpath */
	uint64_t	 bits; /* name type mask */
	int		 sec; /* section number, 10 means invalid */
	enum form	 form;
};

struct	mansearch {
	const char	*arch; /* architecture/NULL */
	const char	*sec; /* mansection/NULL */
	const char	*outkey; /* show content of this macro */
	enum argmode	 argmode; /* interpretation of arguments */
	int		 firstmatch; /* first matching database only */
};


struct	manpaths;

int	mansearch(const struct mansearch *cfg, /* options */
		const struct manpaths *paths, /* manpaths */
		int argc, /* size of argv */
		char *argv[],  /* search terms */
		struct manpage **res, /* results */
		size_t *ressz); /* results returned */
void	mansearch_free(struct manpage *, size_t);