Lua String 的扩展函数

字符串分割函数返回 Table

string.split = function(line, sep)

sep = sep or ' '

local retval = {}

local pos = 1

while true do

local from, to = string.find(line, sep, pos)

if from then

local item = string.sub(line, pos, from-1)

table.insert( retval, item )

pos = to + 1

else

local item = string.sub(line, pos)

table.insert( retval, item )

break

end

end

return retval

end