Created
February 22, 2018 11:18
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OCaml Unix iso datetime converting
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| module Unix = struct | |
| include Unix | |
| let tm_of_iso date = | |
| let make y m d h mi s = Unix.( | |
| {tm_sec=s;tm_min=mi;tm_hour=h;tm_mday=d;tm_mon=(m - 1);tm_year=(y - 1900); | |
| tm_wday=0;tm_yday=0;tm_isdst=false}) in | |
| Scanf.sscanf date "%u-%u-%uT%u:%u:%uZ" make | |
| let iso_of_tm tm = | |
| Unix.(Printf.sprintf "%u-%02u-%02uT%02u:%02u:%02uZ" (tm.tm_year + 1900) (tm.tm_mon + 1) tm.tm_mday | |
| tm.tm_hour tm.tm_min tm.tm_sec) | |
| let cmp_tm d1 d2 = | |
| let ts1, _ = mktime d1 in | |
| let ts2, _ = mktime d2 in | |
| compare ts1 ts2 | |
| let tm_of_yojson = function | |
| `String s -> Result.Ok (tm_of_iso s) | |
| | _ -> Result.Error "Unknown json type for date time" | |
| end |
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