Mercurial > prosody-hg
view plugins/mod_storage_none.lua @ 14177:67b68147ed1d 13.0
util.ringbuffer: find(): Fix find logic bugs
If the buffer was full, find() would return earlier (wpos == rpos). Checking
blen is the better way to test if the buffer is empty.
Secondly, the loop scanned for blen - l, but if l (length of needle) was
larger than the buffer length, this calculation would underflow and cause a
lot of spinning.
New tests have been added to cover various edge cases of :find().
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Mon, 25 May 2026 14:44:20 +0100 |
| parents | ef671d337577 |
| children |
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-- luacheck: ignore 212 local driver = {}; local driver_mt = { __index = driver }; function driver:open(store, typ) if typ and typ ~= "keyval" and typ ~= "archive" then return nil, "unsupported-store"; end return setmetatable({ store = store, type = typ }, driver_mt); end function driver:get(user) return {}; end function driver:set(user, data) return nil, "Storage disabled"; end function driver:stores(username) return { "roster" }; end function driver:purge(user) return true; end function driver:append() return nil, "Storage disabled"; end function driver:find() return function () end, 0; end function driver:delete() return true; end module:provides("storage", driver);
