Eremey Valetov
9bb8153cef
Decompression MVP based on Jan Bobrowski's portable unuc2/libunuc2. CMake build system targeting Linux (GCC/Clang) with MSVC fallback. Includes original UC2 source by Nico de Vries and unuc2-0.6 for reference.
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/* list.h by Jan Bobrowski. Inspired by list.h from Linux */
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#ifndef LIST_H
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#define LIST_H
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#include <stddef.h>
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typedef struct list {
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struct list *next, *prev;
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} list_t;
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static inline void list_link(struct list *prev, struct list *next)
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{
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prev->next = next;
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next->prev = prev;
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}
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static inline void list_init(struct list *item)
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{
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list_link(item, item);
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}
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static inline void list_add_after(struct list *prev, struct list *item)
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{
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struct list *next = prev->next;
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list_link(prev, item);
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list_link(item, next);
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}
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#define list_prepend(H,L) list_add_after(H,L)
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#define list_add(H,L) list_add_after(H,L)
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static inline void list_add_before(struct list *next, struct list *item)
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{
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struct list *prev = next->prev;
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list_link(item, next);
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list_link(prev, item);
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}
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#define list_append(H,L) list_add_before(H,L)
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#define list_add_end(H,L) list_add_before(H,L)
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static inline list_t *list_del(struct list *item)
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{
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struct list *prev = item->prev, *next = item->next;
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list_link(prev, next);
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return next;
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}
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static inline void list_del_init(struct list *item)
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{
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struct list *prev = item->prev, *next = item->next;
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list_link(item, item);
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list_link(prev, next);
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}
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static inline int list_is_empty(struct list *head)
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{
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return head->next == head;
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}
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#define list_empty(H) list_is_empty(H)
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#define list_item(L, T, M) ((T*)((char*)(1?(L):&((T*)0)->M) - offsetof(T,M)))
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/* remove first element and return it */
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static inline struct list *list_get(struct list *head)
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{
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struct list *item = head->next;
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struct list *next = item->next;
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list_link(head, next);
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return item;
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}
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/* remove first element, initialize and return it */
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static inline struct list *list_get_init(struct list *head)
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{
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struct list *item = head->next;
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struct list *next = item->next;
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list_link(item, item);
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list_link(head, next);
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return item;
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}
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#endif
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