日期时间常用判断

1 function Parse_yyyyMMdd_hhmmss(dtStr)
2     --local str = "1970-01-01 08:00:03"
3     local pattern = "(%d+)-(%d+)-(%d+) (%d+):(%d+):(%d+)"
4     local index1, index2, year, month, day, h, m, s = string.find(dtStr, pattern)
5 
6     local dateTime = { year = year, month = month, day = day, hour = h, min = m, sec = s }
7     return os.time(dateTime)
8 end

1 function NowBetweenDateTime(beginDtTimeStr, endDtTimeStr)
2     local utcSec1 = Parse_yyyyMMdd_hhmmss(beginDtTimeStr)
3     local utcSec2 = Parse_yyyyMMdd_hhmmss(endDtTimeStr)
4     
5     local nowTimeStamp = os.time()
6     return nowTimeStamp >= utcSec1 and nowTimeStamp <= utcSec2
7 end

 1 function NowBetweenDayTime(beginTimeStr, endTimeStr)
 2     local pattern = "(%d+):(%d+)"
 3     
 4     local nowDateTime = os.date("*t", os.time())
 5     local nowDaySec = nowDateTime.hour * 3600 + nowDateTime.min * 60
 6     
 7     local index1, index2, h, m = string.find(beginTimeStr, pattern)
 8     local beginDaySec = h * 3600 + m * 60
 9     if nowDaySec < beginDaySec then return false end
10     
11     index1, index2, h, m = string.find(endTimeStr, pattern)
12     local endDaySec = h * 3600 + m * 60
13     if nowDaySec > endDaySec then return false end
14     
15     return true
16 end

1 function LeftTime()
2     local dt = os.date("*t", os.time())
3     local leftSec = 24 * 3600 - dt.hour * 3600 + dt.min * 60 + dt.sec
4     return leftSec
5 end

 1 function NextWdayDateTime(wday)
 2     local timeStamp = os.time()
 3 
 4     --今天周几
 5     local dt = os.date("*t", timeStamp)
 6     if 1 == dt.wday then dt.wday = 7
 7     else dt.wday = dt.wday - 1 end
 8 
 9     local dayDiff = dt.wday - wday + 7
10     timeStamp = timeStamp + dayDiff * 24 * 3600
11     return os.date("*t", timeStamp)
12 end

1 function DayDiff(lastTimeStamp, nowTimeStamp)
2     local diff = (nowTimeStamp - lastTimeStamp) / (24 * 3600)
3     return diff
4 end