restore some styles as before.

lualib/skynet/db/mysql.lua

@@ -102,13 +102,10 @@ local function _from_cstring(data, i)
 end
 
 local function _dumphex(bytes)
-    return strgsub(
-        bytes,
-        ".",
+    return strgsub(bytes, ".",
         function(x)
             return strformat("%02x ", strbyte(x))
-        end
-    )
+        end)
 end
 
 local function _compute_token(password, scramble)
@@ -123,9 +120,7 @@ local function _compute_token(password, scramble)
     local stage3 = sha1(scramble .. stage2)
 
     local i = 0
-    return strgsub(
-        stage3,
-        ".",
+    return strgsub(stage3, ".",
         function(x)
             i = i + 1
             -- ~ is xor in lua 5.3
@@ -258,7 +253,7 @@ local function _parse_err_packet(packet)
     local errno, pos = _get_byte2(packet, 2)
     local marker = sub(packet, pos, pos)
     local sqlstate
-    if marker == "#" then
+    if marker == '#' then
         -- with sqlstate
         pos = pos + 1
         sqlstate = sub(packet, pos, pos + 5 - 1)
@@ -413,9 +408,7 @@ local function _mysql_login(self, user, password, database, on_connect)
         local scramble = scramble1 .. scramble_part2
         local token = _compute_token(password, scramble)
         local client_flags = 260047
-        local req =
-            strpack(
-            "<I4I4c24zs1z",
+        local req = strpack("<I4I4c24zs1z",
             client_flags,
             self._max_packet_size,
             strrep("\0", 24), -- TODO: add support for charset encoding
@@ -921,7 +914,7 @@ end
 ]]
 function _M.execute(self, stmt, ...)
     -- 检查参数，不能为nil
-    local p_n = select("#", ...)
+    local p_n = select('#', ...)
     local p_v
     for i = 1, p_n do
         p_v = select(i, ...)
@@ -970,19 +963,19 @@ function _M.server_ver(self)
 end
 
 local escape_map = {
-    ["\0"] = "\\0",
-    ["\b"] = "\\b",
-    ["\n"] = "\\n",
-    ["\r"] = "\\r",
-    ["\t"] = "\\t",
-    ["\26"] = "\\Z",
-    ["\\"] = "\\\\",
+    ['\0'] = "\\0",
+    ['\b'] = "\\b",
+    ['\n'] = "\\n",
+    ['\r'] = "\\r",
+    ['\t'] = "\\t",
+    ['\26'] = "\\Z",
+    ['\\'] = "\\\\",
     ["'"] = "\\'",
-    ['"'] = '\\"'
+    ['"'] = '\\"',
 }
 
 function _M.quote_sql_str( str)
-    return strformat("'%s'", strgsub(str, '[\0\b\n\r\t\26\\\'"]', escape_map))
+    return strformat("'%s'", strgsub(str, "[\0\b\n\r\t\26\\\'\"]", escape_map))
 end
 
 function _M.set_compact_arrays(self, value)