103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
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* This file Copyright (C) 2007-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#pragma once
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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/**
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* @addtogroup utils Utilities
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* @{
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*/
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#include "transmission.h" /* inline */
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/** @brief simple list structure similar to glib's GList */
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typedef struct tr_list
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{
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void* data;
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struct tr_list* next;
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struct tr_list* prev;
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}
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tr_list;
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typedef int (* TrListCompareFunc)(void const* a, void const* b);
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typedef void (* TrListForeachFunc)(void*);
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/**
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* @brief return the number of items in the list
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* @return the number of items in the list
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*/
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int tr_list_size(tr_list const* list);
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/**
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* @brief free the specified list and set its pointer to NULL
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* @param list pointer to the list to be freed
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* @param func optional function to invoke on each item in the list
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*/
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void tr_list_free(tr_list** list, TrListForeachFunc data_free_func);
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/**
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* @brief append an item to the specified list
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* @param list pointer to the list
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* @param item the item to append
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*/
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void tr_list_append(tr_list** list, void* data);
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/**
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* @brief prepend an item to the specified list
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* @param list pointer to the list
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* @param item the item to prepend
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*/
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void tr_list_prepend(tr_list** list, void* data);
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/**
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* @brief remove the next item in the list
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* @return the next item in the list, or NULL if the list is empty
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* @param list pointer to the list
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*/
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void* tr_list_pop_front(tr_list** list);
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/**
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* @brief remove the list's node that contains the specified data pointer
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* @param list pointer to the list
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* @param data data to remove
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* @return the removed data pointer, or NULL if no match was found
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*/
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void* tr_list_remove_data(tr_list** list, void const* data);
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/**
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* @brief remove the list's node that compares equal to "b" when compared with "compare_func"
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* @param list pointer to the list
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* @param b the comparison key
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* @param compare_func the comparison function. The arguments passed to it will be the list's pointers and the comparison key "b"
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* @return the removed data pointer, or NULL if no match was found
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*/
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void* tr_list_remove(tr_list** list, void const* b, TrListCompareFunc compare_func);
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/**
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* @brief find the list node whose data that compares equal to "b" when compared with "compare_func"
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* @param list pointer to the list
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* @param b the comparison key
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* @param compare_func the comparison function. The arguments passed to it will be the list's pointers and the comparison key "b"
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* @return the matching list node, or NULL if not match was found
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*/
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tr_list* tr_list_find(tr_list* list, void const* b, TrListCompareFunc compare_func);
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/**
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* @brief Insert in an ordered list
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* @param list pointer to the list
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* @param item the item to be inserted
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* @param compare the comparison function.
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*/
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void tr_list_insert_sorted(tr_list** list, void* data, TrListCompareFunc compare);
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/* @} */
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