一些自定义的Lua常用的工具函数

sk = sk or {}
local xmtool = {}
--[[
@brief  Defined some commonly used functions
@by     xiaoming
]]

local countCode = [[
            local i = 0
            return function()
            i = i + 1
            return i
            end
]]

---自定义计数器
xmtool.xmCounter = assert(loadstring(countCode))

---------------------------------
--获取类的单例函数
[email protected] clss 要获取单例的类
[email protected] singleton 需要获取的单例
[email protected] clss 的singleton
---------------------------------
function xmtool.getSingleton(clss,singleton,...)
	return singleton or clss:new(...)
end

---------------------------------------
--包装回调函数，使得类方法定义一致化
[email protected] obj 要调用的函数的对象
[email protected] method function 要调用的函数
---------------------------------------
function xmtool.handlerCall(obj, method)
    return function(...)
        return method(obj, ...)
    end
end

-------------------------------------------
--字符串分割
[email protected] input 输入的字符串
[email protected] delimiter 用于分割的字符
[email protected] #table/如果分隔符为空,则返回false
-------------------------------------------
function xmtool.splitStr(input, delimiter)
    input = tostring(input)
    delimiter = tostring(delimiter)
    if (delimiter=='') then return false end
    local pos,arr = 0, {}
    -- for each divider found
    for st,sp in function() return string.find(input, delimiter, pos, true) end do
        table.insert(arr, string.sub(input, pos, st - 1))
        pos = sp + 1
    end
    table.insert(arr, string.sub(input, pos))
    return arr
end

-----------------------------------
--字符串分割
[email protected] input 输入的字符串
[email protected] delimiter 用于分割的字符
[email protected] #string
-----------------------------------
function xmtool.getSplitStr(input, delimiter)
    local arr = xmtool.splitStr(input,delimiter)
    local str = ""
    if(type(arr) ~= "table") then return tostring(input)
    else
     for i=1,#arr do
     str = str..arr[i]
     end
    end
    return str
end

-----------------------------
--打印信息
-----------------------------
function xmtool.skLog(...)
    print(string.format(...))
end

-----------------------
-------打印日志---------
-----------------------
function xmtool.printFuncMsg(msgInfo,tableFunc)
    printInfo(msgInfo..",file:%s,line:%s",tableFunc.source,tableFunc.currentline)
end

-----------------------------
--打印相应堆栈信息
--msg 我们添加的自定义信息
-----------------------------
function xmtool.printTraceMsg(msg)
    xmtool.skLog("----------------------------------------")
    xmtool.skLog("MSG: " .. tostring(msg) .. "\n")
    xmtool.skLog(debug.traceback())
    xmtool.skLog("----------------------------------------")
    return msg
end

--------------------------------------
--关键函数出错检测
[email protected] func #function  需要检测的函数
[email protected] msg  自定义信息
[email protected] level 错误级别
--------------------------------------
function xmtool.catchError(func,msg,level)
    local state , message = xpcall(func,function() return xmtool.printTraceMsg(msg) end)
    return state or error(message,level)
end

---------------------------------
--将数字转为百分比字符串
[email protected] number 要转化的数字
[email protected] retain 要保留的小数位数
---------------------------------
function xmtool.getPercentString(number,retain)
     local ret = tostring(retain)
     return string.format("%."..ret.."f".."%%",number*100)
end