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-rw-r--r--util/multitable.lua49
1 files changed, 49 insertions, 0 deletions
diff --git a/util/multitable.lua b/util/multitable.lua
index e5e87521..397f9ebe 100644
--- a/util/multitable.lua
+++ b/util/multitable.lua
@@ -82,6 +82,53 @@ local function remove(self, ...)
end
+local function s(t, n, results, _end, ...)
+ if t == nil then return; end
+ local k = select(n, ...);
+ if n == _end then
+ if k == nil then
+ for _, v in pairs(t) do
+ t_insert(results, v);
+ end
+ else
+ t_insert(results, t[k]);
+ end
+ return;
+ end
+ if k then
+ v = t[k];
+ if v then
+ s(v, n+1, results, _end, ...);
+ end
+ else
+ for _,b in pairs(t) do
+ s(b, n+1, results, _end, ...);
+ end
+ end
+end
+
+-- Search for keys, nil == wildcard
+local function search(self, ...)
+ local _end = select('#', ...);
+ for n = _end,1 do
+ if select(n, ...) then _end = n; break; end
+ end
+ local results = {};
+ s(self.data, 1, results, _end, ...);
+ return results;
+end
+
+-- Append results to an existing list
+local function search_add(self, results, ...)
+ if not results then results = {}; end
+ local _end = select('#', ...);
+ for n = _end,1 do
+ if select(n, ...) then _end = n; break; end
+ end
+ s(self.data, 1, results, _end, ...);
+ return results;
+end
+
function new()
return {
data = {};
@@ -89,6 +136,8 @@ function new()
add = add;
set = set;
remove = remove;
+ search = search;
+ search_add = search_add;
};
end