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local utils={}
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function utils.trantime(time)
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time = time or os.time()
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local rtime = os.date("%m-%d %H:%M",time)
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local c = os.time() - time
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if c <= 60 then
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return '刚刚'
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elseif c <= 60 * 60 then
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local min = math.floor(c/60)
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return string.format("%s分钟前", tostring(min))
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elseif c <= 60 * 60 * 24 then
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local min = math.floor(c/60/60)
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return string.format("%s小时前", tostring(min))
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elseif c <= 60 * 60 * 24 * 7 then
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local min = math.floor(c/60/60/24)
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return string.format("%s天前", tostring(min))
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elseif c <= 60 * 60 * 24 * 30 then
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local min = math.floor(c/60/60/24/7)
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return string.format("%s周前", tostring(min))
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else
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return rtime
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end
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end
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function utils.isdiffday(t1,t2)
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if not t1 or not t2 then
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return true
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end
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local temp1 = os.date('*t',t1)
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local temp2 = os.date('*t',t2)
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if temp1.year~=temp2.year or temp1.month~=temp2.month or temp1.day~=temp2.day then
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return true
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end
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return false
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end
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-- 计算两个时间相差多少天
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function utils.calday(t1,t2)
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local d1 = os.date("*t",t1)
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local d2 = os.date("*t",t2)
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local e1 = os.time({year=d1.year, month=d1.month, day=d1.day, hour=0,min=0,sec=0})
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local e2 = os.time({year=d2.year, month=d2.month, day=d2.day, hour=0,min=0,sec=0})
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local e = e2-e1
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e=math.abs(e)
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local day,_,_,_=utils.caldatetime(e)
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return day
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end
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function utils.caldatetime(elapsed)
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assert(elapsed>=0)
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local sec=elapsed%60
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local min=math.floor(elapsed%3600/60)
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local hour = math.floor(elapsed%(3600*24)/3600)
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local day=math.floor(elapsed/24/3600)
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return day,hour,min,sec
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end
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-- 计算当前时间的今天的开始时间
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function utils.onedaybegin(t)
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t = t or os.time()
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local temp1 = os.date('*t',t)
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return os.time({year=temp1.year, month=temp1.month, day=temp1.day, hour=0,min=0,sec=0})
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end
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-- 计算当前时间的今天的结束时间
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function utils.onedayover(t)
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t = t or os.time()
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local temp1 = os.date('*t',t)
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return os.time({year=temp1.year, month=temp1.month, day=temp1.day, hour=23,min=59,sec=59})
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end
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function utils.getwday(t)
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local d1 = os.date("*t",t)
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return d1.wday
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end
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function utils.oneweekbegin(t)
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local s=utils.onedaybegin(t)
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local temp1 = os.date('*t',t)
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local index=2
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if temp1.wday==1 then
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index=8
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else
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index=temp1.wday
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end
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return s-(index-2)*24*3600
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end
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function utils.oneweekend(t)
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local s=utils.onedaybegin(t)
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local temp1 = os.date('*t',t)
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local index=2
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if temp1.wday==1 then
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index=8
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else
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index=temp1.wday
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end
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return s+(8-index)*24*3600+(24*3600-1)
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end
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function utils.getYearBeginDayOfWeek(tm)
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local yearBegin = os.time{year=os.date("*t",tm).year,month=1,day=1}
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local yearBeginDayOfWeek = tonumber(os.date("%w",yearBegin))
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-- sunday correct from 0 -> 7
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if(yearBeginDayOfWeek == 0) then yearBeginDayOfWeek = 7 end
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return yearBeginDayOfWeek
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end
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function utils.getDayAdd(tm)
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local yearBeginDayOfWeek = utils.getYearBeginDayOfWeek(tm)
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local dayAdd
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if(yearBeginDayOfWeek < 5 ) then
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-- first day is week 1
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dayAdd = (yearBeginDayOfWeek - 2)
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else
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-- first day is week 52 or 53
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dayAdd = (yearBeginDayOfWeek - 9)
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end
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return dayAdd
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end
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function utils.getyear(t)
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t = t or os.time()
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local temp1 = os.date('*t',t)
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return temp1.year
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end
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function utils.getmonth(t)
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local temp1 = os.date('*t',t)
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return temp1.month
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end
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function utils.getWeekNumberOfYear(tm)
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local dayOfYear = os.date("%j",tm)
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local dayAdd = utils.getDayAdd(tm)
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local dayOfYearCorrected = dayOfYear + dayAdd
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if(dayOfYearCorrected < 0) then
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-- week of last year - decide if 52 or 53
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lastYearBegin = os.time{year=os.date("*t",tm).year-1,month=1,day=1}
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lastYearEnd = os.time{year=os.date("*t",tm).year-1,month=12,day=31}
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dayAdd = utils.getDayAdd(lastYearBegin)
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dayOfYear = dayOfYear + os.date("%j",lastYearEnd)
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dayOfYearCorrected = dayOfYear + dayAdd
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end
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local weekNum = math.floor((dayOfYearCorrected) / 7) + 1
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if( (dayOfYearCorrected > 0) and weekNum == 53) then
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-- check if it is not considered as part of week 1 of next year
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local nextYearBegin = os.time{year=os.date("*t",tm).year+1,month=1,day=1}
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local yearBeginDayOfWeek = utils.getYearBeginDayOfWeek(nextYearBegin)
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if(yearBeginDayOfWeek < 5 ) then
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weekNum = 1
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end
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end
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return weekNum
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end
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function utils.onedayhms(t,h,m,s)
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local temp1 = os.date('*t',t)
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return os.time({year=temp1.year, month=temp1.month, day=temp1.day, hour=h,min=m,sec=s})
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end
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function utils.onedaybeforebegin(t,d)
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local temp1 = os.date('*t',t)
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local temp= os.time({year=temp1.year, month=temp1.month, day=temp1.day, hour=0,min=0,sec=0})
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temp=temp-d*24*3600
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return temp
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end
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function utils.onedayboforehms(t,d,h,m,s)
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local temp1 = os.date('*t',t)
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local temp= os.time({year=temp1.year, month=temp1.month, day=temp1.day, hour=h,min=m,sec=s})
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temp=temp-d*24*3600
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return temp
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end
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function utils.get_days_in_month(mnth, yr)
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return os.date('*t',os.time{year=yr,month=mnth+1,day=0})['day']
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end
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function utils.firstToUpper(str)
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return (str:gsub("^%l", string.upper))
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end
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-- 快速查找算法
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function utils.newset()
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local reverse = {} --以数据为key，数据在set中的位置为value
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local set = {} --一个数组，其中的value就是要管理的数据
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return setmetatable(set,{__index = {
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insert = function(set,value)
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if not reverse[value] then
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table.insert(set,value)
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reverse[value] = #set
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end
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end,
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remove = function(set,value)
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local index = reverse[value]
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if index then
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reverse[value] = nil
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local top = table.remove(set) --删除数组中最后一个元素
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if top ~= value then
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--若不是要删除的值，则替换它
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reverse[top] = index
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set[index] = top
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end
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end
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end,
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find = function(set,value)
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local index = reverse[value]
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return (index and true or false)
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end,
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findindex = function(set,value)
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local index = reverse[value]
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return index
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end,
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}})
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end
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function utils.rshift(a,n)
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return a<<n
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end
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function utils.aor(a,b)
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return a|b
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end
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-- Compute the difference in seconds between local time and UTC.
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local function get_timezone()
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local now = os.time()
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return os.difftime(now, os.time(os.date("!*t", now)))
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end
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function utils.get_timezone()
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return get_timezone()
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end
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-- Return a timezone string in ISO 8601:2000 standard form (+hhmm or -hhmm)
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local function get_tzoffset(timezone)
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local h, m = math.modf(timezone / 3600)
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return string.format("%+.4d", 100 * h + 60 * m)
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end
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function utils.get_tzoffset(timezone)
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return get_tzoffset(timezone)
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end
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-- return the timezone offset in seconds, as it was on the time given by ts
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-- Eric Feliksik
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local function get_timezone_offset(ts)
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local utcdate = os.date("!*t", ts)
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local localdate = os.date("*t", ts)
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localdate.isdst = false -- this is the trick
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return os.difftime(os.time(localdate), os.time(utcdate))
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end
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function utils.get_timezone_offset(ts)
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return get_timezone_offset(ts)
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end
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function utils.getday(time)
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time = time or os.time()
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local t = os.date("*t", time)
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local s = string.format("%04d%02d%02d", t.year, t.month, t.day)
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return checkint(s)
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end
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function utils.get_datetime(time)
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time = time or os.time()
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return os.date("%Y-%m-%d %H:%M:%S", time)
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end
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function utils.cal_daynum_by_datetime(datetime, pattern)
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local s = utils.get_timestamp_by_datetime(datetime, pattern)
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return utils.getday(s)
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end
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function utils.get_timestamp_by_datetime(datetime, pattern)
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local year, month, day, hour, min, sec = datetime:match(pattern)
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return os.time({day=day,month=month,year=year,hour=hour,min=min,sec=sec})
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end
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function utils.get_weekno(t)
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local t = t or os.time()
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local year = os.date("%Y", t)
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local month = os.date("%m", t)
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local day = os.date("%d", t)
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return os.date("%W", os.date(os.time{year=year, month=month, day=day}))
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end
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function utils.get_hour(t)
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t = t or os.time()
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local d = os.date("*t", t)
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return checkint(d.hour)
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end
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--当前是星期几
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function utils.get_week(t)
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local weekNum = os.date("*t", t).wday - 1
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if weekNum == 0 then
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weekNum = 7
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end
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return weekNum
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end
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function utils.getdayex(t)
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t = t or os.time()
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local overtime = utils.onedayover(t)
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return overtime - t
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end
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return utils
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