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/* argot - Gray's Extensible Configuration System -*- c -*-
   Copyright (C) 2007-2016 Sergey Poznyakoff

   Grecs 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 3 of the License, or (at your
   option) any later version.

   Grecs 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 Grecs. If not, see <http://www.gnu.org/licenses/>. */

#ifndef _ARGOT_TREE_H
#define _ARGOT_TREE_H

#include <argot/node.h>

int argot_tree_free(struct argot_node *node);
void  argot_tree_sort(struct argot_node *node,
		      int (*compare)(struct argot_node const *,
				     struct argot_node const *));
struct argot_node *argot_tree_first_node(struct argot_node *tree);
struct argot_node *argot_next_node(struct argot_node *node);

struct argot_node *argot_find_node(struct argot_node *node, const char *path);

enum argot_tree_recurse_op {
	argot_tree_recurse_set,
	argot_tree_recurse_pre,
	argot_tree_recurse_post
};

enum argot_tree_recurse_res {
	argot_tree_recurse_ok,
	argot_tree_recurse_fail,
	argot_tree_recurse_skip,
	argot_tree_recurse_stop
};
	
typedef enum argot_tree_recurse_res
       (*argot_tree_recursor_t)(enum argot_tree_recurse_op,
				struct argot_node *, void *);

int argot_tree_recurse(struct argot_node *node, argot_tree_recursor_t recfun,
		       void *data);
int argot_tree_join(struct argot_node *dst, struct argot_node *src);

enum argot_tree_recurse_res argot_node_exact_match(
	enum argot_tree_recurse_op op,
	struct argot_node *node, void *data);

typedef struct argot_match_buf *argot_match_buf_t;
struct argot_node *argot_match_first(struct argot_node *tree,
				     const char *pattern,
				     argot_match_buf_t *buf);
struct argot_node *argot_match_next(struct argot_match_buf *buf);
void argot_match_buf_free(struct argot_match_buf *buf);
argot_match_buf_t argot_match_buf_create(int argc, char **argv,
					 struct argot_value **labelv);
struct argot_node *argot_match_buf_first(struct argot_match_buf *buf,
					 struct argot_node *tree);
struct argot_node *argot_match_buf_get_node(argot_match_buf_t buf);
size_t argot_match_buf_get_args(argot_match_buf_t buf, char ***argv);
struct argot_node *argot_match_buf_get_root(argot_match_buf_t buf);
void argot_match_buf_set_root(argot_match_buf_t buf, struct argot_node *root);

#endif

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