实现Lua的TableToString

为了便于调试，将Table打印为String。

function MultiString(s,n)
	local r=""
	for i=1,n do
	  r=r..s
	end
	return r
end
--o ,obj;b use [];n \n;t num \t;
function TableToString(o,n,b,t)
    if type(b) ~= "boolean" and b ~= nil then
        print("expected third argument %s is a boolean", tostring(b))
    end
    if(b==nil)then b=true end
    t=t or 1
    local s=""
    if type(o) == "number" or 
        type(o) == "function" or
        type(o) == "boolean" or
        type(o) == "nil" then
        s = s..tostring(o)
    elseif type(o) == "string" then
        s = s..string.format("%q",o)
    elseif type(o) == "table" then
        s = s.."{"
        if(n)then
        	s = s.."\n"..MultiString("  ",t)
		end
        for k,v in pairs(o) do
            if b then
                s = s.."["
            end

            s = s .. TableToString(k,n, b,t+1)

            if b then
                s = s .."]"
            end

            s = s.. " = "
            s = s.. TableToString(v,n, b,t+1)
            s = s .. ","
            if(n)then
            	s=s.."\n"..MultiString("  ",t)
            end
        end
        s = s.."}"

    end
    return s;
end