From e6252422506c45dfb4c583ca2438cc090ea4a282 Mon Sep 17 00:00:00 2001
From: sumneko <sumneko@hotmail.com>
Date: Sun, 28 Apr 2019 11:47:54 +0800
Subject: =?UTF-8?q?=E8=BF=87=E6=BB=A4=E4=BA=A4=E7=BB=99=E5=89=8D=E7=AB=AF?=
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---
 server/src/core/matchKey.lua | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 server/src/core/matchKey.lua

(limited to 'server/src/core/matchKey.lua')

diff --git a/server/src/core/matchKey.lua b/server/src/core/matchKey.lua
new file mode 100644
index 00000000..b46250cb
--- /dev/null
+++ b/server/src/core/matchKey.lua
@@ -0,0 +1,30 @@
+return function (me, other)
+    if me == other then
+        return true
+    end
+    if me == '' then
+        return true
+    end
+    if #me > #other then
+        return false
+    end
+    local lMe = me:lower()
+    local lOther = other:lower()
+    if lMe == lOther:sub(1, #lMe) then
+        return true
+    end
+    local chars = {}
+    for i = 1, #lOther do
+        local c = lOther:sub(i, i)
+        chars[c] = (chars[c] or 0) + 1
+    end
+    for i = 1, #lMe do
+        local c = lMe:sub(i, i)
+        if chars[c] and chars[c] > 0 then
+            chars[c] = chars[c] - 1
+        else
+            return false
+        end
+    end
+    return true
+end
-- 
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