calendar 3.0.0 · OCaml Package

Pretty printing and parsing from string. In the following, an "event" is either a date or a time or a calendar.

This module implements different printers: one for each kind of events. The three printers have the same signature: they mainly implement a fprint : string -> formatter -> t -> unit function and a from_fstring : string -> string -> t function. The first one prints an event according to a format string (see below for a description of such a format). The second one converts a string to an event according to a format string.

A format string follows the unix utility 'date' (with few modifications). It is a string which contains two types of objects: plain characters and conversion specifiers. Those specifiers are introduced by a % character and their meanings are:

%%: a literal %
%a: short day name (by using a short version of day_name)
%A: day name (by using day_name)
%b: short month name (by using a short version of month_name)
%B: month name (by using month_name)
%c: shortcut for %a %b %d %H:%M:%S %Y
%C: century: as %Y without the two last digits (since version 2.01)
%d: day of month (01..31)
%D: shortcut for %m/%d/%y
%e: same as %_d
%F: shortcut for %Y-%m-%d: ISO-8601 notation (since version 2.01)
%h: same as %b
%H: hour (00..23)
%I: hour (01..12)
%i: same as %F; deprecated since 2.01
%j: day of year (001..366)
%k: same as %_H
%l: same as %_I
%m: month (01..12)
%M: minute (00..59)
%n: a newline (same as \n)
%p: AM or PM
%P: am or pm (same as %p in lowercase) (since version 2.01)
%r: shortcut for %I:%M:%S %p
%R: shortcut for %H:%M (since version 2.01)
%s: number of seconds since 1970/1/1 (since version 2.01)
%S: second (00..60)
%t: a horizontal tab (same as \t)
%T: shortcut for %H:%M:%S
%V: week number of year (01..53)
%w: day of week (1..7)
%W: same as %V
%y: last two digits of year (00..99)
%Y: year (four digits)
%z: time zone in the form +hhmm (e.g. -0400) (since version 2.01)
%:z: time zone in the form +hh:mm (e.g. -04:00) (since version 2.01)
%::z: time zone in the form +hh:mm:ss (e.g. -04:00:00) (since version 2.01)
%:::z: time zone in the form +hh (e.g. -04) (since version 2.01)

By default, date pads numeric fields with zeroes. Two special modifiers between `%' and a numeric directive are recognized:

'-' (hyphen): do not pad the field
'_' (underscore): pad the field with spaces
'0' (zero): pad the field with zeroes (default) (since version 2.01)
'^': use uppercase if possible (since version 2.01) Padding is only available for printers, not for parsers.

@example a possible output of %D is 01/06/03 @example a possible output of the date is %B, the %-dth is the date is January, the 6th is matched by ; @example a possible output of %c is Thu Sep 18 14:10:51 2003.

since 1.05

Internationalization

You can manage the string representations of days and months. By default, the English names are used but you can change their by setting the references day_name and month_name.

val day_name : (Date.day -> string) Pervasives.ref

String representation of a day.

val name_of_day : Date.day -> string

name_of_day d is equivalent to !day_name d. Used by the specifier %A.

val short_name_of_day : Date.day -> string

short_name_of_day d returns the 3 first characters of name_of_day d. Used by the specifier %a.

val month_name : (Date.month -> string) Pervasives.ref

String representation of a month.

val name_of_month : Date.month -> string

name_of_month m is equivalent to !day_month m. Used by the specifier %B.

val short_name_of_month : Date.month -> string

short_name_of_month d returns the 3 first characters of name_of_month d. Used by the specifier %b.

val set_word_regexp : Re.Str.regexp -> unit

Set the regular expression used to recognize words in from_fstring. Default is [a-zA-Z]*.

since 1.10

Printers (including parsers from string)

Printers also contain parsers which allow to build events from strings.

module type S = sig ... end

Generic signature of a printer-parser.

module Date : S with type t = Date.t

Date printer. Specifiers which use time functionalities are not available on this printer. Default format is %i.

module DatePrinter : S with type t = Date.t

module Time : S with type t = Time.t

Time printer. Specifiers which use date functionalities are not available on this printer. Default format is %T.

module TimePrinter : S with type t = Time.t

module Ftime : S with type t = Ftime.t

Ftime printer. Seconds are rounded to integers before pretty printing. Specifiers which use date functionalities are not available on this printer. Default format is %T.

module Precise_Calendar : S with type t = Calendar.Precise.t

Precise Calendar printer. Default format is %i %T.

module Calendar : S with type t = Calendar.t

Calendar printer. Default format is %i %T.

module CalendarPrinter : S with type t = Calendar.t

module Precise_Fcalendar : S with type t = Fcalendar.Precise.t

Precise Fcalendar printer. Seconds are rounded to integers before pretty printing. Default format is %i %T.

module Fcalendar : S with type t = Fcalendar.t

Fcalendar printer. Seconds are rounded to integers before pretty printing. Default format is %i %T.

package calendar

Internationalization

Printers (including parsers from string)