From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:30:35 +0200 Subject: Adding upstream version 2.38.1. Signed-off-by: Daniel Baumann --- libsmartcols/src/iter.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 libsmartcols/src/iter.c (limited to 'libsmartcols/src/iter.c') diff --git a/libsmartcols/src/iter.c b/libsmartcols/src/iter.c new file mode 100644 index 0000000..91cc080 --- /dev/null +++ b/libsmartcols/src/iter.c @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2009-2014 Karel Zak + * Copyright (C) 2014 Ondrej Oprala + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +/** + * SECTION: iter + * @title: Iterator + * @short_description: unified iterator + * + * The iterator keeps the direction and the last position + * for access to the internal library tables/lists. + */ + +#include +#include + +#include "smartcolsP.h" + +/** + * scols_new_iter: + * @direction: SCOLS_INTER_{FOR,BACK}WARD direction + * + * Returns: newly allocated generic libmount iterator. + */ +struct libscols_iter *scols_new_iter(int direction) +{ + struct libscols_iter *itr = calloc(1, sizeof(*itr)); + if (!itr) + return NULL; + itr->direction = direction; + return itr; +} + +/** + * scols_free_iter: + * @itr: iterator pointer + * + * Deallocates the iterator. + */ +void scols_free_iter(struct libscols_iter *itr) +{ + free(itr); +} + +/** + * scols_reset_iter: + * @itr: iterator pointer + * @direction: SCOLS_INTER_{FOR,BACK}WARD or -1 to keep the direction unchanged + * + * Resets the iterator. + */ +void scols_reset_iter(struct libscols_iter *itr, int direction) +{ + if (direction == -1) + direction = itr->direction; + + memset(itr, 0, sizeof(*itr)); + itr->direction = direction; +} + +/** + * scols_iter_get_direction: + * @itr: iterator pointer + * + * Returns: SCOLS_INTER_{FOR,BACK}WARD + */ +int scols_iter_get_direction(const struct libscols_iter *itr) +{ + return itr->direction; +} -- cgit v1.2.3