Jonathan Bernard
c4717b4b00
- `parseDateOrDateTime attempts to parse times starting from the most specific (date and time) to least specific. - `set` and `add` functions allow adding multiple content items at once using varargs.
56 lines
1.4 KiB
Nim
56 lines
1.4 KiB
Nim
import sequtils, strutils, times
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const DATE_FMTS = [ "yyyy-MM-dd", "yyyyMMdd" ]
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const DATE_TIME_FMTS = [
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"yyyyMMdd'T'HHmmss",
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"yyyyMMdd'T'HHmmssz",
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"yyyyMMdd'T'HHmmsszzz",
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"yyyyMMdd'T'HHmmss'.'fffzzz",
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"yyyy-MM-dd'T'HH:mm:ss",
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"yyyy-MM-dd'T'HH:mm:ssz",
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"yyyy-MM-dd'T'HH:mm:sszzz",
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"yyyy-MM-dd'T'HH:mm:ss'.'fffzzz",
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]
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const ALL_FMTS = DATE_TIME_FMTS.toSeq & DATE_FMTS.toSeq
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proc parseDateTimeStr(
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dateStr: string,
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dateFmts: openarray[string]
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): DateTime {.inline, raises:[ValueError].} =
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for fmt in dateFmts:
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try: result = parse(dateStr, fmt)
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except ValueError: discard
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if not result.isInitialized:
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raise newException(ValueError, "cannot parse date: " & dateStr )
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proc parseDate*(dateStr: string): DateTime =
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parseDateTimeStr(dateStr, DATE_FMTS)
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proc parseDateTime*(dateStr: string): DateTime =
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parseDateTimeStr(dateStr, DATE_TIME_FMTS)
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proc parseDateOrDateTime*(dateStr: string): DateTime =
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parseDateTimeStr(dateStr, ALL_FMTS)
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func foldContentLine*(s: string): string =
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result = ""
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var rem = s
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while rem.len > 75: # TODO: unicode multi-byte safe?
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result &= rem[0..<75] & "\r\n "
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rem = rem[75..^1]
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result &= rem
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func unfoldContentLine*(s: string): string =
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return s.multiReplace([("\r\n ", "")])
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template indexOfIt*(s, pred: untyped): int =
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var result = -1
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for idx, it {.inject.} in pairs(s):
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if pred:
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result = idx
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break
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result
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