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51 lines
No EOL
2 KiB
Text
51 lines
No EOL
2 KiB
Text
local DateTime = require("@lune/datetime")
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local now = DateTime.now()
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local nowRfc = now:toRfcDate()
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assert(type(nowRfc) == "string", "toRfcDate should return a string")
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assert(
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string.match(nowRfc, "^%a%a%a, %d%d? %a%a%a %d%d%d%d %d%d:%d%d:%d%d [+-]%d%d%d%d$"),
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"RFC 2822 date string does not match expected format"
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)
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-- Extract components of the RFC 2822 string
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local day, date, month, year, time, timezone =
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nowRfc:match("^(%a%a%a), (%d%d?) (%a%a%a) (%d%d%d%d) (%d%d:%d%d:%d%d) ([+-]%d%d%d%d)$")
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if not day or not date or not month or not year or not time or not timezone then
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error("Failed to extract components from RFC 2822 date string")
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end
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-- Validate month
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local validMonths = {
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Jan = true, Feb = true, Mar = true, Apr = true, May = true, Jun = true,
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Jul = true, Aug = true, Sep = true, Oct = true, Nov = true, Dec = true,
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}
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assert(validMonths[month], "Month must be a valid RFC 2822 month abbreviation")
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-- Validate year
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assert(string.match(year, "^%d%d%d%d$"), "Year must be a 4-digit number")
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-- Validate date
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local dayNum = tonumber(date)
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assert(dayNum >= 1 and dayNum <= 31, "Date must be between 1 and 31")
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-- Validate time
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local hour, minute, second = time:match("^(%d%d):(%d%d):(%d%d)$")
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if not hour or not minute or not second then
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error("Failed to extract time components from RFC 2822 date string")
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end
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assert(hour and tonumber(hour) >= 0 and tonumber(hour) < 24, "Hour must be between 0 and 23")
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assert(minute and tonumber(minute) >= 0 and tonumber(minute) < 60, "Minute must be between 0 and 59")
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assert(second and tonumber(second) >= 0 and tonumber(second) < 60, "Second must be between 0 and 59")
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-- Validate timezone
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local tzHour, tzMinute = timezone:match("^([+-]%d%d)(%d%d)$")
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if not tzHour or not tzMinute then
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error("Failed to extract timezone components from RFC 2822 date string")
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end
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assert(tzHour and tonumber(tzHour) >= -14 and tonumber(tzHour) <= 14, "Timezone hour offset must be between -14 and +14")
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assert(tzMinute and tonumber(tzMinute) >= 0 and tonumber(tzMinute) < 60, "Timezone minute offset must be between 0 and 59") |