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| author | Kim Alvefur <zash@zash.se> | 2023-07-10 17:19:05 +0200 |
|---|---|---|
| committer | Kim Alvefur <zash@zash.se> | 2023-07-10 17:19:05 +0200 |
| commit | deecaafbfb0bc42a68e0d1ef75770d449a204deb (patch) | |
| tree | 6ed9434974610ea23a0e81984850bbb405dbacf7 | |
| parent | 5ee4b4e8a6a888a16f24d127c1da57468c8d0c8c (diff) | |
| download | prosody-deecaafbfb0bc42a68e0d1ef75770d449a204deb.tar.gz prosody-deecaafbfb0bc42a68e0d1ef75770d449a204deb.zip | |
util.datamanager: Fix indexing first item if not at the very start
If the first item does not start at position 0 then the index function
produces a phantom first entry covering position zero until where the
real first item starts. When using the index, this would make it either
appear as the first item was missing or cause an off-by-one issue with
remaining items.
| -rw-r--r-- | util/datamanager.lua | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/util/datamanager.lua b/util/datamanager.lua index a124b3dc..a00b9014 100644 --- a/util/datamanager.lua +++ b/util/datamanager.lua @@ -329,7 +329,7 @@ local function build_list_index(username, host, datastore, items) return fh, err, errno; end local prev_pos = 0; -- position before reading - local last_item_start = 0; + local last_item_start = nil; if items and items[1] then local last_item = items[#items]; @@ -340,7 +340,7 @@ local function build_list_index(username, host, datastore, items) for line in fh:lines() do if line:sub(1, 4) == "item" then - if prev_pos ~= 0 then + if prev_pos ~= 0 and last_item_start then t_insert(items, { start = last_item_start; length = prev_pos - last_item_start }); end last_item_start = prev_pos |