Function rename_index_entry_at

read-cache.c:157–186

}

void rename_index_entry_at(struct index_state *istate, int nr, const char *new_name)
{
	struct cache_entry *old_entry = istate->cache[nr], *new_entry, *refreshed;
	int namelen = strlen(new_name);

	new_entry = make_empty_cache_entry(istate, namelen);
	copy_cache_entry(new_entry, old_entry);
	new_entry->ce_flags &= ~CE_HASHED;
	new_entry->ce_namelen = namelen;
	new_entry->index = 0;
	memcpy(new_entry->name, new_name, namelen + 1);

	cache_tree_invalidate_path(istate, old_entry->name);
	untracked_cache_remove_from_index(istate, old_entry->name);
	remove_index_entry_at(istate, nr);

	/*
	 * Refresh the new index entry. Using 'refresh_cache_entry' ensures
	 * we only update stat info if the entry is otherwise up-to-date (i.e.,
	 * the contents/mode haven't changed). This ensures that we reflect the
	 * 'ctime' of the rename in the index without (incorrectly) updating
	 * the cached stat info to reflect unstaged changes on disk.
	 */
	refreshed = refresh_cache_entry(istate, new_entry, CE_MATCH_REFRESH);
	if (refreshed && refreshed != new_entry) {
		add_index_entry(istate, refreshed, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
		discard_cache_entry(new_entry);
	} else
		add_index_entry(istate, new_entry, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
}

/*
 * This only updates the "non-critical" parts of the directory