-- local function checkPlayName( str )

-- str = Utils.utf8_to_unicode(str)

-- local retStr = ""

-- local num = 0

-- local lenInByte = #str

-- local x = 1

-- for i=1,lenInByte do

-- i = x

-- local curByte = string.byte(str, x)

-- local byteCount = 1;

-- if curByte>0 and curByte<=127 then

-- byteCount = 1

-- elseif curByte>127 and curByte<240 then

-- byteCount = 3

-- elseif curByte>=240 and curByte<=247 then

-- byteCount = 4

-- end

-- local curStr = string.sub(str, i, i+byteCount-1)

-- retStr = retStr .. curStr

-- x = x + byteCount

-- if x >= lenInByte then

-- local finalRetStr = Utils.unicode_to_utf8(retStr)

-- return finalRetStr

-- end

-- num = num + 1

-- if num >= 24 then

-- retStr = retStr.."..."

-- local finalRetStr = Utils.unicode_to_utf8(retStr)

-- return finalRetStr

-- end

-- end

-- local finalRetStr = Utils.unicode_to_utf8(retStr)

-- return finalRetStr

-- end

-- Utils.checkPlayName = checkPlayName

-- local bit = require("bit")

-- local function unicode_to_utf8(convertStr)

-- if type(convertStr)~="string" then

-- return convertStr

-- end

-- local resultStr=""

-- local i=1

-- while true do

-- local num1=string.byte(convertStr,i)

-- local unicode

-- if num1~=nil and string.sub(convertStr,i,i+1)=="\\u" then

-- unicode=tonumber("0x"..string.sub(convertStr,i+2,i+5))

-- i=i+6

-- elseif num1~=nil then

-- unicode=num1

-- i=i+1

-- else

-- break

-- end

-- print(unicode)

-- if unicode <= 0x007f then

-- resultStr=resultStr..string.char(bit.band(unicode,0x7f))

-- elseif unicode >= 0x0080 and unicode <= 0x07ff then

-- resultStr=resultStr..string.char(bit.bor(0xc0,bit.band(bit.rshift(unicode,6),0x1f)))

-- resultStr=resultStr..string.char(bit.bor(0x80,bit.band(unicode,0x3f)))

-- elseif unicode >= 0x0800 and unicode <= 0xffff then

-- resultStr=resultStr..string.char(bit.bor(0xe0,bit.band(bit.rshift(unicode,12),0x0f)))

-- resultStr=resultStr..string.char(bit.bor(0x80,bit.band(bit.rshift(unicode,6),0x3f)))

-- resultStr=resultStr..string.char(bit.bor(0x80,bit.band(unicode,0x3f)))

-- end

-- end

-- resultStr=resultStr..'\0'

-- print(resultStr)

-- return resultStr

-- end

-- Utils.unicode_to_utf8 = unicode_to_utf8

-- local function utf8_to_unicode(convertStr)

-- if type(convertStr)~="string" then

-- return convertStr

-- end

-- local resultStr=""

-- local i=1

-- local num1=string.byte(convertStr,i)

-- while num1~=nil do

-- print(num1)

-- local tempVar1,tempVar2

-- if num1 >= 0x00 and num1 <= 0x7f then

-- tempVar1=num1

-- tempVar2=0

-- elseif bit.band(num1,0xe0)== 0xc0 then

-- local t1 = 0

-- local t2 = 0

-- t1 = bit.band(num1,bit.rshift(0xff,3))

-- i=i+1

-- num1=string.byte(convertStr,i)

-- t2 = bit.band(num1,bit.rshift(0xff,2))

-- tempVar1=bit.bor(t2,bit.lshift(bit.band(t1,bit.rshift(0xff,6)),6))

-- tempVar2=bit.rshift(t1,2)

-- elseif bit.band(num1,0xf0)== 0xe0 then

-- local t1 = 0

-- local t2 = 0

-- local t3 = 0

-- t1 = bit.band(num1,bit.rshift(0xff,3))

-- i=i+1

-- num1=string.byte(convertStr,i)

-- t2 = bit.band(num1,bit.rshift(0xff,2))

-- i=i+1

-- num1=string.byte(convertStr,i)

-- t3 = bit.band(num1,bit.rshift(0xff,2))

-- tempVar1=bit.bor(bit.lshift(bit.band(t2,bit.rshift(0xff,6)),6),t3)

-- tempVar2=bit.bor(bit.lshift(t1,4),bit.rshift(t2,2))

-- end

-- resultStr=resultStr..string.format("\\u%02x%02x",tempVar2,tempVar1)

-- print(resultStr)

-- i=i+1

-- num1=string.byte(convertStr,i)

-- end

-- print(resultStr)

-- return resultStr

-- end

-- Utils.utf8_to_unicode = utf8_to_unicode