Question

我们假设我有以下提醒时间戳

local reminder_timestamp = "2013-12-13T00:00:00+01:00"

我正在使用以下函数以UTC返回时间

local function makeTimeStamp(dateString)
      local pattern = "(%d+)%-(%d+)%-(%d+)%a(%d+)%:(%d+)%:([%d%.]+)([Z%p])(%d%d)%:?(%d%d)"
      local year, month, day, hour, minute, seconds, tzoffset, offsethour, offsetmin = dateString:match(pattern)
      local timestamp = os.time( {year=year, month=month, day=day, hour=hour, min=minute, sec=seconds} )
      local offset = 0
      if ( tzoffset ) then
        if ( tzoffset == "+" or tzoffset == "-" ) then  -- we have a timezone!
          offset = offsethour * 60 + offsetmin
          if ( tzoffset == "-" ) then
            offset = offset * -1
          end
          timestamp = timestamp + offset

        end
      end
  return timestamp
end

上面的模式应该与我之前提到的提醒时间戳相匹配？

Answer 1

您需要使用Lua的字符串解析功能。尝试下面提到的一些技巧，如果您仍有问题，请专门发布不起作用的内容：

Question about splitting string and saving in several variables
Question about extracting data from a string, very similar to yours（虽然问题域是GPS坐标而不是日期/时间）
Question about how to do pattern matching in Lua，几个很好的示例和指向文档的链接

Answer 2

这是答案，功能实际上可以正常工作

pattern = "(%d+)%-(%d+)%-(%d+)%a(%d+)%:(%d+)%:([%d%.]+)([Z%p])(%d%d)%:?(%d%d)"

reminder_timestamp = "2013-12-23T08:00:00+01:00"

local year, month, day, hour, minute, seconds, tzoffset, offsethour, offsetmin = reminder_timestamp:match(pattern)

资源：http://www.lua.org/manual/5.1/manual.html#5.4.1

时间戳模式

2 个答案: