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/*
* Copyright (c) 2014 Dave Vasilevsky <dave@vasilevsky.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQFS_TRAVERSE_H
#define SQFS_TRAVERSE_H
#include "common.h"
#include "dir.h"
#include "stack.h"
typedef struct {
bool dir_end;
sqfs_dir_entry entry;
char *path;
/* private */
int state;
sqfs *fs;
sqfs_name namebuf;
sqfs_stack stack;
size_t path_size, path_cap;
size_t path_last_size;
} sqfs_traverse;
/* Begin a recursive traversal of a filesystem tree.
Every sub-item of the given inode will be traversed in-order, but not
this inode itself. */
sqfs_err sqfs_traverse_open(sqfs_traverse *trv, sqfs *fs, sqfs_inode_id iid);
sqfs_err sqfs_traverse_open_inode(sqfs_traverse *trv, sqfs *fs,
sqfs_inode *inode);
/* Clean up at any point during or after a traversal */
void sqfs_traverse_close(sqfs_traverse *trv);
/* Get the next item in the traversal. An item may be:
- A directory entry, in which case trv->entry will be filled
- A marker that a directory is finished, in which case trv->dir_end will
be true.
Returns false if there are no more items. */
bool sqfs_traverse_next(sqfs_traverse *trv, sqfs_err *err);
/* Don't recurse into the directory just returned. */
sqfs_err sqfs_traverse_prune(sqfs_traverse *trv);
#endif
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