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+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @brief <#Brief Description#>
+ *
+ * <#Detailed Description#>
+ *
+ */
+#ifndef InterfaceSet_h
+#define InterfaceSet_h
+
+#include <src/utils/interface.h>
+
+struct interfaceSet;
+/**
+ *
+ * @see interfaceSetCreate
+ */
+typedef struct interfaceSet InterfaceSet;
+
+/**
+ * <#One Line Description#>
+ *
+ * <#Paragraphs Of Explanation#>
+ *
+ * @param [<#in out in,out#>] <#name#> <#description#>
+ *
+ * @return <#value#> <#explanation#>
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ *
+ * @see <#references#>
+ */
+InterfaceSet *interfaceSetCreate(void);
+
+/**
+ * <#One Line Description#>
+ *
+ * <#Paragraphs Of Explanation#>
+ *
+ * @param [<#in out in,out#>] <#name#> <#description#>
+ *
+ * @return <#value#> <#explanation#>
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ *
+ * @see <#references#>
+ */
+void interfaceSetDestroy(InterfaceSet **setPtr);
+
+/**
+ * Adds interface to set, does not allow duplicates
+ *
+ * Takes ownership of the iface memory if added
+ *
+ * Duplicates are two entries with the same interface index
+ *
+ * @param <#param1#>
+ * @return true if added, false if not (likely a duplicate)
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ */
+bool interfaceSetAdd(InterfaceSet *set, Interface *iface);
+
+/**
+ * The number of interfaces in the set
+ *
+ * <#Discussion#>
+ *
+ * @param <#param1#>
+ * @return <#return#>
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ */
+size_t interfaceSetLength(const InterfaceSet *set);
+
+/**
+ * Uses the ordinal index of the interface in the Set
+ *
+ * Ranges from 0 .. <code>interfaceSetLength()-1</code>.
+ *
+ * @param <#param1#>
+ * @return NULL if not found
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ */
+Interface *interfaceSetGetByOrdinalIndex(InterfaceSet *set,
+ size_t ordinalIndex);
+
+/**
+ * Retreives by the assigned interface index
+ *
+ * <#Discussion#>
+ *
+ * @param <#param1#>
+ * @return NULL if not found
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ */
+Interface *interfaceSetGetByInterfaceIndex(const InterfaceSet *set,
+ unsigned interfaceIndex);
+
+/**
+ * Uses the system name (e.g. "en0")
+ *
+ * <#Discussion#>
+ *
+ * @param <#param1#>
+ * @return NULL if not found
+ *
+ * Example:
+ * @code
+ * <#example#>
+ * @endcode
+ */
+Interface *interfaceSetGetByName(InterfaceSet *set, const char *name);
+
+/**
+ * Determine if two InterfaceSet instances are equal.
+ *
+ * Two InterfaceSet instances are equal if, and only if, the sets contain the
+ * same elements
+ * - order independent.
+ * Each element is compared via <code>interfaceEquals()</code>
+ *
+ * The following equivalence relations on non-null `InterfaceSet` instances are
+ * maintained:
+ *
+ * * It is reflexive: for any non-null reference value x,
+ * `InterfaceSet_Equals(x, x)` must return true.
+ *
+ * * It is symmetric: for any non-null reference values x and y,
+ * `InterfaceSet_Equals(x, y)` must return true if and only if
+ * `interfaceSetEquals(y, x)` returns true.
+ *
+ * * It is transitive: for any non-null reference values x, y, and z, if
+ * `interfaceSetEquals(x, y)` returns true and
+ * `interfaceSetEquals(y, z)` returns true,
+ * then `interfaceSetEquals(x, z)` must return true.
+ *
+ * * It is consistent: for any non-null reference values x and y, multiple
+ * invocations of `interfaceSetEquals(x, y)` consistently return true or
+ * consistently return false.
+ *
+ * * For any non-null reference value x, `interfaceSetEquals(x, NULL)` must
+ * return false.
+ *
+ * @param a A pointer to a `InterfaceSet` instance.
+ * @param b A pointer to a `InterfaceSet` instance.
+ * @return true if the two `InterfaceSet` instances are equal.
+ *
+ * Example:
+ * @code
+ * {
+ * InterfaceSet *a = interfaceSetCreate();
+ * InterfaceSet *b = interfaceSetCreate();
+ *
+ * if (interfaceSetEquals(a, b)) {
+ * // true
+ * } else {
+ * // false
+ * }
+ * }
+ * @endcode
+ */
+bool interfaceSetEquals(const InterfaceSet *a, const InterfaceSet *b);
+#endif // InterfaceSet_h