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Consolidate messages.  Have all parse-time messages (in libmdoc,
libroff, etc., etc.) route into mandoc_msg() and mandoc_vmsg(), for the
time being in libmandoc.h.  This requires struct mparse to be passed
into the allocation routines instead of mandocmsg and a void pointer.
Then, move some of the functionality of the old mmsg() into read.c's
mparse_mmsg() (check against wlevel and setting of file_status) and use
main.c's mmsg() as simply a printing tool.

/*	$Id: libroff.h,v 1.20 2011/03/20 16:02:05 kristaps Exp $ */
/*
 * Copyright (c) 2009, 2010, 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 LIBROFF_H
#define LIBROFF_H

__BEGIN_DECLS

enum	tbl_part {
	TBL_PART_OPTS, /* in options (first line) */
	TBL_PART_LAYOUT, /* describing layout */
	TBL_PART_DATA, /* creating data rows */
	TBL_PART_CDATA /* continue previous row */
};

struct	tbl_node {
	struct mparse	 *parse; /* parse point */
	int		  pos; /* invocation column */
	int		  line; /* invocation line */
	enum tbl_part	  part;
	struct tbl	  opts;
	struct tbl_row	 *first_row;
	struct tbl_row	 *last_row;
	struct tbl_span	 *first_span;
	struct tbl_span	 *current_span;
	struct tbl_span	 *last_span;
	struct tbl_head	 *first_head;
	struct tbl_head	 *last_head;
	struct tbl_node	 *next;
};

struct	eqn_node {
	struct eqn	  eqn;
	struct eqn_node	 *next;
};

struct tbl_node	*tbl_alloc(int, int, struct mparse *);
void		 tbl_restart(int, int, struct tbl_node *);
void		 tbl_free(struct tbl_node *);
void		 tbl_reset(struct tbl_node *);
enum rofferr 	 tbl_read(struct tbl_node *, int, const char *, int);
int		 tbl_option(struct tbl_node *, int, const char *);
int		 tbl_layout(struct tbl_node *, int, const char *);
int		 tbl_data(struct tbl_node *, int, const char *);
int		 tbl_cdata(struct tbl_node *, int, const char *);
const struct tbl_span	*tbl_span(struct tbl_node *);
void		 tbl_end(struct tbl_node *);
struct eqn_node	*eqn_alloc(int, int);
void		 eqn_end(struct eqn_node *);
void		 eqn_free(struct eqn_node *);
enum rofferr 	 eqn_read(struct eqn_node **, int, const char *, int);

__END_DECLS

#endif /*LIBROFF_H*/