=pod =head1 NAME DateTime::Format::ISO8601 - Parses ISO8601 formats =head1 SYNOPSIS use DateTime::Format::ISO8601; my $dt = DateTime::Format::ISO8601->parse_datetime( $str ); my $dt = DateTime::Format::ISO8601->parse_time( $str ); or my $iso8601 = DateTime::Format::ISO8601->new; my $dt = $iso8601->parse_datetime( $str ); my $dt = $iso8601->parse_time( $str ); =head1 DESCRIPTION Parses almost all ISO8601 date and time formats. ISO8601 time-intervals will be supported in a later release. =head1 USAGE =head2 Import Parameters This module accepts no arguments to it's C method. =head2 Methods =head3 Constructors =over 4 =item * new( ... ) Accepts an optional hash. my $iso8601 = DateTime::Format::ISO8601->new( base_datetime => $dt, cut_off_year => 42, legacy_year => 1, ); =over 4 =item * base_datetime A C object that will be used to fill in missing information from incomplete date/time formats. This key is optional. =item * cut_off_year A integer representing the cut-off point between interpreting 2-digits years as 19xx or 20xx. 2-digit years < legacy_year will be interpreted as 20xx 2-digit years >= legacy_year will be untreated as 19xx This key defaults to the value of C. =item * legacy_year A boolean value controlling if a 2-digit year is interpreted as being in the current century (unless a C is set) or if C should be used to place the year in either 20xx or 19xx. This key defaults to the value of C. =back =item * clone Returns a replica of the given object. =back =head3 Object Methods =over 4 =item * base_datetime Returns a C object if a C has been set. =item * set_base_datetime( object => $object ) Accepts a C object that will be used to fill in missing information from incomplete date/time formats. =item * cut_off_year Returns a integer representing the cut-off point between interpreting 2-digits years as 19xx or 20xx. =item * set_cut_off_year( $int ) Accepts a integer representing the cut-off point between interpreting 2-digits years as 19xx or 20xx. 2-digit years < legacy_year will be interpreted as 20xx 2-digit years >= legacy_year will be interpreted as 19xx =item * legacy_year Returns a boolean value indicating the 2-digit year handling behavior. =item * set_legacy_year( $bool ) Accepts a boolean value controlling if a 2-digit year is interpreted as being in the current century (unless a C is set) or if C should be used to place the year in either 20xx or 19xx. =back =head3 Class Methods =over 4 =item * DefaultCutOffYear( $int ) Accepts a integer representing the cut-off point for 2-digit years when calling C as class methods and the default value for C when creating objects. If called with no parameters this method will return the default value for C. =item * DefaultLegacyYear( $bool ) Accepts a boolean value controlling the legacy year behavior when calling C as class methods and the default value for C when creating objects. If called with no parameters this method will return the default value for C. =back =head3 Parser(s) These may be called as either class or object methods. =over 4 =item * parse_datetime =item * parse_time Please see the L section. =back =head1 FORMATS There are 6 string that can match against date only or time only formats. The C method will attempt to match these ambiguous strings against date only formats. If you want to match against the time only formats see the C method. =head2 Conventions =over 4 =item * Expanded ISO8601 These formats are supported with exactly 6 digits for the year. Support for a variable number of digits will be in a later release. =item * Precision If a format doesn't include a year all larger time unit up to and including the year are filled in using the current date/time or [if set] the C object. =item * Fractional time There is no limit on the expressed precision. =back =head2 Supported via parse_datetime The supported formats are listed by the section of ISO 8601:2000(E) in which they appear. =head3 5.2 Dates =head3 5.2.1.1 YYYYMMDD YYYY-MM-DD =head3 5.2.1.2 YYYY-MM YYYY YY =head3 5.2.1.3 YYMMDD YY-MM-DD -YYMM -YY-MM -YY --MMDD --MM-DD --MM ---DD =head3 5.2.1.4 +[YY]YYYYMMDD +[YY]YYYY-MM-DD +[YY]YYYY-MM +[YY]YYYY +[YY]YY =head3 5.2.2.1 YYYYDDD YYYY-DDD =head3 5.2.2.2 YYDDD YY-DDD -DDD =head3 5.2.2.3 +[YY]YYYYDDD +[YY]YYYY-DDD =head3 5.3.2.1 YYYYWwwD YYYY-Www-D =head3 5.2.3.2 YYYYWww YYYY-Www YYWwwD YY-Www-D YYWww YY-Www -YWwwD -Y-Www-D -YWww -Y-Www -WwwD -Www-D -Www -W-D =head3 5.2.3.4 +[YY]YYYYWwwD +[YY]YYYY-Www-D +[YY]YYYYWww +[YY]YYYY-Www =head3 5.3 Time of Day =head3 5.3.1.1 - 5.3.1.3 optionally prefixed with 'T' =head3 5.3.1.1 hh:mm:ss =head3 5.3.1.2 hh:mm =head3 5.3.1.3 - 5.3.1.4 fractional (decimal) separator maybe either ',' or '.' =head3 5.3.1.3 hhmmss,ss hh:mm:ss,ss hhmm,mm hh:mm,mm hh,hh =head3 5.3.1.4 -mm:ss -mmss,s -mm:ss,s -mm,m --ss,s =head3 5.3.3 - 5.3.4.2 optionally prefixed with 'T' =head3 5.3.3 hhmmssZ hh:mm:ssZ hhmmZ hh:mmZ hhZ hhmmss.ssZ hh:mm:ss.ssZ =head3 5.3.4.2 hhmmss[+-]hhmm hh:mm:ss[+-]hh:mm hhmmss[+-]hh hh:mm:ss[+-]hh hhmmss.ss[+-]hhmm hh:mm:ss.ss[+-]hh:mm =head3 5.4 Combinations of date and time of day =head3 5.4.1 YYYYMMDDThhmmss YYYY-MM-DDThh:mm:ss YYYYMMDDThhmmssZ YYYY-MM-DDThh:mm:ssZ YYYYMMDDThhmmss[+-]hhmm YYYY-MM-DDThh:mm:ss[+-]hh:mm YYYYMMDDThhmmss[+-]hh YYYY-MM-DDThh:mm:ss[+-]hh =head3 5.4.2 YYYYMMDDThhmmss.ss YYYY-MM-DDThh:mm:ss.ss YYYYMMDDThhmmss.ss[+-]hhmm YYYY-MM-DDThh:mm:ss.ss[+-]hh:mm Support for this section is not complete. YYYYMMDDThhmm YYYY-MM-DDThh:mm YYYYDDDThhmmZ YYYY-DDDThh:mmZ YYYYWwwDThhmm[+-]hhmm YYYY-Www-DThh:mm[+-]hh =head3 5.5 Time-Intervals Will be supported in a later release. =head2 Supported via parse_time =head3 5.3.1.1 - 5.3.1.3 optionally prefixed with 'T' =head3 5.3.1.1 hhmmss =head3 5.3.1.2 hhmm hh =head3 5.3.1.4 -mmss -mm --ss =head1 STANDARDS DOCUMENT =head2 Title ISO8601:2000(E) Data elements and interchange formats - information exchange - Representation of dates and times Second edition 2000-12-15 =head2 Reference Number ISO/TC 154 N 362 =head1 CREDITS Iain 'Spoon' Truskett (SPOON) who wrote L. That has grown into I Katana> of date and time parsing. This module was inspired by and conceived in honor of Iain's work. Tom Phoenix (PHOENIX) and PDX.pm for helping me solve the ISO week conversion bug. Not by fixing the code but motivation me to fix it so I could participate in a game of C. Jonathan Leffler (JOHNL) for reporting a test bug. Kelly McCauley for a patch to add 8 missing formats. Alasdair Allan (AALLAN) for complaining about excessive test execution time. Everyone at the DateTime C. =head1 SUPPORT Support for this module is provided via the email list. See L for more details. =head1 AUTHOR Joshua Hoblitt =head1 COPYRIGHT Copyright (c) 2003-2005 Joshua Hoblitt. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the licenses can be found in the I file included with this module, or in L and L as supplied with Perl 5.8.1 and later. =head1 SEE ALSO L, L, L =cut