BLI listbase: add bytes finding helpers.
Quite similar to string ones actually, except more generic. Used in id_override_static branch currently.
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@ -50,12 +50,14 @@ void *BLI_findlink(const struct ListBase *listbase, int number) ATTR_WARN_UNUSED
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void *BLI_findstring(const struct ListBase *listbase, const char *id, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_findstring_ptr(const struct ListBase *listbase, const char *id, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_findptr(const struct ListBase *listbase, const void *ptr, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_listbase_bytes_find(const ListBase *listbase, const void *bytes, const size_t bytes_size, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1, 2);
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/* find backwards */
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void *BLI_rfindlink(const struct ListBase *listbase, int number) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_rfindstring(const struct ListBase *listbase, const char *id, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_rfindstring_ptr(const struct ListBase *listbase, const char *id, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_rfindptr(const struct ListBase *listbase, const void *ptr, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void *BLI_listbase_bytes_rfind(const ListBase *listbase, const void *bytes, const size_t bytes_size, const int offset) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1, 2);
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void BLI_freelistN(struct ListBase *listbase) ATTR_NONNULL(1);
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void BLI_addtail(struct ListBase *listbase, void *vlink) ATTR_NONNULL(1);
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@ -691,6 +691,46 @@ void *BLI_rfindptr(const ListBase *listbase, const void *ptr, const int offset)
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return NULL;
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}
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/**
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* Finds the first element of listbase which contains the specified bytes
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* at the specified offset, returning NULL if not found.
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*/
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void *BLI_listbase_bytes_find(const ListBase *listbase, const void *bytes, const size_t bytes_size, const int offset)
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{
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Link *link = NULL;
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const void *ptr_iter;
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for (link = listbase->first; link; link = link->next) {
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ptr_iter = (const void *)(((const char *)link) + offset);
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if (memcmp(bytes, ptr_iter, bytes_size) == 0) {
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return link;
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}
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}
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return NULL;
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}
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/* same as above but find reverse */
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/**
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* Finds the last element of listbase which contains the specified bytes
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* at the specified offset, returning NULL if not found.
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*/
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void *BLI_listbase_bytes_rfind(const ListBase *listbase, const void *bytes, const size_t bytes_size, const int offset)
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{
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Link *link = NULL;
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const void *ptr_iter;
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for (link = listbase->last; link; link = link->prev) {
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ptr_iter = (const void *)(((const char *)link) + offset);
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if (memcmp(bytes, ptr_iter, bytes_size) == 0) {
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return link;
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}
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}
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return NULL;
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}
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/**
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* Returns the 0-based index of the first element of listbase which contains the specified
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* null-terminated string at the specified offset, or -1 if not found.
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