time-compat-1.9.3: Compatibility package for time

Safe HaskellTrustworthy
LanguageHaskell2010

Data.Time.Format.Compat

Contents

Synopsis

UNIX-style formatting

class FormatTime t #

Minimal complete definition

formatCharacter

formatTime :: FormatTime t => TimeLocale -> String -> t -> String #

Substitute various time-related information for each %-code in the string, as per formatCharacter.

The general form is %<modifier><width><specifier>, where <modifier> and <width> are optional.

<modifier>

glibc-style modifiers can be used before the specifier (here marked as z):

%-z
no padding
%_z
pad with spaces
%0z
pad with zeros
%^z
convert to upper case
%#z
convert to lower case (consistently, unlike glibc)

<width>

Width digits can also be used after any modifiers and before the specifier (here marked as z), for example:

%4z
pad to 4 characters (with default padding character)
%_12z
pad with spaces to 12 characters

<specifier>

For all types (note these three are done by formatTime, not by formatCharacter):

%%
%
%t
tab
%n
newline

TimeZone

For TimeZone (and ZonedTime and UTCTime):

%z
timezone offset in the format -HHMM.
%Z
timezone name

LocalTime

For LocalTime (and ZonedTime and UTCTime and UniversalTime):

%c
as dateTimeFmt locale (e.g. %a %b %e %H:%M:%S %Z %Y)

TimeOfDay

For TimeOfDay (and LocalTime and ZonedTime and UTCTime and UniversalTime):

%R
same as %H:%M
%T
same as %H:%M:%S
%X
as timeFmt locale (e.g. %H:%M:%S)
%r
as time12Fmt locale (e.g. %I:%M:%S %p)
%P
day-half of day from (amPm locale), converted to lowercase, am, pm
%p
day-half of day from (amPm locale), AM, PM
%H
hour of day (24-hour), 0-padded to two chars, 00 - 23
%k
hour of day (24-hour), space-padded to two chars, 0 - 23
%I
hour of day-half (12-hour), 0-padded to two chars, 01 - 12
%l
hour of day-half (12-hour), space-padded to two chars, 1 - 12
%M
minute of hour, 0-padded to two chars, 00 - 59
%S
second of minute (without decimal part), 0-padded to two chars, 00 - 60
%q
picosecond of second, 0-padded to twelve chars, 000000000000 - 999999999999.
%Q
decimal point and fraction of second, up to 12 second decimals, without trailing zeros. For a whole number of seconds, %Q omits the decimal point unless padding is specified.

UTCTime and ZonedTime

For UTCTime and ZonedTime:

%s
number of whole seconds since the Unix epoch. For times before the Unix epoch, this is a negative number. Note that in %s.%q and %s%Q the decimals are positive, not negative. For example, 0.9 seconds before the Unix epoch is formatted as -1.1 with %s%Q.

Day

For Day (and LocalTime and ZonedTime and UTCTime and UniversalTime):

%D
same as %m/%d/%y
%F
same as %Y-%m-%d
%x
as dateFmt locale (e.g. %m/%d/%y)
%Y
year, no padding. Note %0Y and %_Y pad to four chars
%y
year of century, 0-padded to two chars, 00 - 99
%C
century, no padding. Note %0C and %_C pad to two chars
%B
month name, long form (fst from months locale), January - December
%b, %h
month name, short form (snd from months locale), Jan - Dec
%m
month of year, 0-padded to two chars, 01 - 12
%d
day of month, 0-padded to two chars, 01 - 31
%e
day of month, space-padded to two chars, 1 - 31
%j
day of year, 0-padded to three chars, 001 - 366
%f
century for Week Date format, no padding. Note %0f and %_f pad to two chars
%V
week of year for Week Date format, 0-padded to two chars, 01 - 53
%u
day of week for Week Date format, 1 - 7
%a
day of week, short form (snd from wDays locale), Sun - Sat
%A
day of week, long form (fst from wDays locale), Sunday - Saturday
%U
week of year where weeks start on Sunday (as sundayStartWeek), 0-padded to two chars, 00 - 53
%w
day of week number, 0 (= Sunday) - 6 (= Saturday)
%W
week of year where weeks start on Monday (as mondayStartWeek), 0-padded to two chars, 00 - 53

UNIX-style parsing

Note in compat mode acceptWS argument is ignored, it's always True.

parseTimeM Source #

Arguments

:: (MonadFail m, ParseTime t) 
=> Bool

Accept leading and trailing whitespace?

-> TimeLocale

Time locale.

-> String

Format string.

-> String

Input string.

-> m t

Return the time value, or fail if the in

Parses a time value given a format string.

This variant from time-compat has always MonadFail constraint.

Look at parseTimeM for documentation.

parseTimeOrError #

Arguments

:: ParseTime t 
=> Bool

Accept leading and trailing whitespace?

-> TimeLocale

Time locale.

-> String

Format string.

-> String

Input string.

-> t

The time value.

Parse a time value given a format string. Fails if the input could not be parsed using the given format. See parseTimeM for details.

readSTime #

Arguments

:: ParseTime t 
=> Bool

Accept leading whitespace?

-> TimeLocale

Time locale.

-> String

Format string

-> ReadS t 

Parse a time value given a format string. See parseTimeM for details.

readPTime #

Arguments

:: ParseTime t 
=> Bool

Accept leading whitespace?

-> TimeLocale

Time locale.

-> String

Format string

-> ReadP t 

Parse a time value given a format string. See parseTimeM for details.

parseTime #

Arguments

:: ParseTime t 
=> TimeLocale

Time locale.

-> String

Format string.

-> String

Input string.

-> Maybe t

The time value, or Nothing if the input could not be parsed using the given format.

readTime #

Arguments

:: ParseTime t 
=> TimeLocale

Time locale.

-> String

Format string.

-> String

Input string.

-> t

The time value.

readsTime #

Arguments

:: ParseTime t 
=> TimeLocale

Time locale.

-> String

Format string

-> ReadS t 

class ParseTime t #

The class of types which can be parsed given a UNIX-style time format string.

Minimal complete definition

buildTime

Instances
ParseTime ZonedTime 
Instance details

Defined in Data.Time.Format.Parse

ParseTime LocalTime 
Instance details

Defined in Data.Time.Format.Parse

ParseTime TimeOfDay 
Instance details

Defined in Data.Time.Format.Parse

ParseTime TimeZone 
Instance details

Defined in Data.Time.Format.Parse

ParseTime UniversalTime 
Instance details

Defined in Data.Time.Format.Parse

ParseTime UTCTime 
Instance details

Defined in Data.Time.Format.Parse

ParseTime Day 
Instance details

Defined in Data.Time.Format.Parse

Methods

buildTime :: TimeLocale -> [(Char, String)] -> Maybe Day #

Locale

data TimeLocale #

Constructors

TimeLocale 

Fields

defaultTimeLocale :: TimeLocale #

Locale representing American usage.

knownTimeZones contains only the ten time-zones mentioned in RFC 822 sec. 5: "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT". Note that the parsing functions will regardless parse single-letter military time-zones and +HHMM format.

iso8601DateFormat :: Maybe String -> String #

Construct format string according to ISO-8601.

The Maybe String argument allows to supply an optional time specification. E.g.:

iso8601DateFormat Nothing            == "%Y-%m-%d"           -- i.e. YYYY-MM-DD
iso8601DateFormat (Just "%H:%M:%S")  == "%Y-%m-%dT%H:%M:%S"  -- i.e. YYYY-MM-DDTHH:MM:SS

rfc822DateFormat :: String #

Format string according to RFC822.