1 package Koha::DateUtils;
3 # Copyright (c) 2011 PTFS-Europe Ltd.
4 # This file is part of Koha.
6 # Koha is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3 of the License, or
9 # (at your option) any later version.
11 # Koha is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with Koha; if not, see <http://www.gnu.org/licenses>.
24 use vars qw(@ISA @EXPORT_OK);
38 Koha::DateUtils - Transitional wrappers to ease use of DateTime
42 Koha has historically only used dates not datetimes and been content to
43 handle these as strings. It also has confused formatting with actual dates
44 this is a temporary module for wrappers to hide the complexity of switch to DateTime
50 $dt = dt_from_string($date_string, [$format, $timezone ]);
52 Passed a date string returns a DateTime object format and timezone default
53 to the system preferences. If the date string is empty DateTime->now is returned
58 my ( $date_string, $date_format, $tz ) = @_;
60 return if $date_string and $date_string =~ m|^0000-0|;
62 my $do_fallback = defined($date_format) ? 0 : 1;
63 my $server_tz = C4::Context->tz;
64 $tz = C4::Context->tz unless $tz;
66 return DateTime->now( time_zone => $tz ) unless $date_string;
68 $date_format = C4::Context->preference('dateformat') unless $date_format;
70 if ( ref($date_string) eq 'DateTime' ) { # already a dt return it
76 # The fallback format is sql/iso
85 if ( $date_format eq 'metric' ) {
86 # metric format is "dd/mm/yyyy[ hh:mm:ss]"
95 elsif ( $date_format eq 'dmydot' ) {
96 # dmydot format is "dd.mm.yyyy[ hh:mm:ss]"
105 elsif ( $date_format eq 'us' ) {
106 # us format is "mm/dd/yyyy[ hh:mm:ss]"
115 elsif ( $date_format eq 'rfc3339' ) {
128 (\.\d{1,3})?(([Zz]$)|((?<offset>[\+|\-])(?<hours>[01][0-9]|2[0-3]):(?<minutes>[0-5][0-9])))
131 # Default to UTC (when 'Z' is passed) for inbound timezone.
132 # The regex above succeeds for both 'z', 'Z' and '+/-' offset.
133 # We set tz as though Z was passed by default and then correct it later if an offset is detected
134 # by the presence fo the <offset> variable.
135 $tz = DateTime::TimeZone->new( name => 'UTC' );
137 elsif ( $date_format eq 'iso' or $date_format eq 'sql' ) {
138 # iso or sql format are yyyy-dd-mm[ hh:mm:ss]"
139 $regex = $fallback_re;
142 die "Invalid dateformat parameter ($date_format)";
145 # Add the faculative time part [hh:mm[:ss]]
162 $regex .= $time_re unless ( $date_format eq 'rfc3339' );
163 $fallback_re .= $time_re;
165 # Ensure we only accept date strings and not other characters.
166 $regex = '^' . $regex . '$';
167 $fallback_re = '^' . $fallback_re . '$';
171 if ( $date_string =~ $regex ) {
177 minute => $+{minute},
178 second => $+{second},
182 # If offset given, set inbound timezone using it.
183 $tz = DateTime::TimeZone->new( name => $+{offset} . $+{hours} . $+{minutes} );
185 } elsif ( $do_fallback && $date_string =~ $fallback_re ) {
191 minute => $+{minute},
192 second => $+{second},
197 die "The given date ($date_string) does not match the date format ($date_format)";
200 # system allows the 0th of the month
201 $dt_params{day} = '01' if $dt_params{day} eq '00';
203 # Set default hh:mm:ss to 00:00:00
204 my $date_only = ( !defined( $dt_params{hour} )
205 && !defined( $dt_params{minute} )
206 && !defined( $dt_params{second} ) );
207 $dt_params{hour} = 00 unless defined $dt_params{hour};
208 $dt_params{minute} = 00 unless defined $dt_params{minute};
209 $dt_params{second} = 00 unless defined $dt_params{second};
212 if ( $ampm eq 'AM' ) {
213 $dt_params{hour} = 00 if $dt_params{hour} == 12;
214 } elsif ( $dt_params{hour} != 12 ) { # PM
215 $dt_params{hour} += 12;
216 $dt_params{hour} = 00 if $dt_params{hour} == 24;
224 # No TZ for dates 'infinite' => see bug 13242
225 ( $dt_params{year} < 9999 ? ( time_zone => $tz ) : () ),
229 $tz = DateTime::TimeZone->new( name => 'floating' );
233 # No TZ for dates 'infinite' => see bug 13242
234 ( $dt_params{year} < 9999 ? ( time_zone => $tz ) : () ),
238 # Convert to configured timezone (unless we started with a dateonly string or had to drop to floating time)
239 $dt->set_time_zone($server_tz) unless ( $date_only || $floating );
246 $date_string = output_pref({ dt => $dt [, dateformat => $date_format, timeformat => $time_format, dateonly => 0|1, as_due_date => 0|1 ] });
247 $date_string = output_pref( $dt );
249 Returns a string containing the time & date formatted as per the C4::Context setting,
250 or C<undef> if C<undef> was provided.
252 This routine can either be passed a DateTime object or or a hashref. If it is
253 passed a hashref, the expected keys are a mandatory 'dt' for the DateTime,
254 an optional 'dateformat' to override the dateformat system preference, an
255 optional 'timeformat' to override the TimeFormat system preference value,
256 and an optional 'dateonly' to specify that only the formatted date string
257 should be returned without the time.
263 my ( $dt, $str, $force_pref, $force_time, $dateonly, $as_due_date );
264 if ( ref $params eq 'HASH' ) {
266 $str = $params->{str};
267 $force_pref = $params->{dateformat}; # if testing we want to override Context
268 $force_time = $params->{timeformat};
269 $dateonly = $params->{dateonly} || 0; # if you don't want the hours and minutes
270 $as_due_date = $params->{as_due_date} || 0; # don't display the hours and minutes if eq to 23:59 or 11:59 (depending the TimeFormat value)
275 Koha::Exceptions::WrongParameter->throw( 'output_pref should not be called with both dt and str parameter' ) if $dt and $str;
279 $dt = eval { dt_from_string( $str ) };
280 Koha::Exceptions::WrongParameter->throw("Invalid date '$str' passed to output_pref" ) if $@;
283 return if !defined $dt; # NULL date
284 Koha::Exceptions::WrongParameter->throw( "output_pref is called with '$dt' (ref ". ( ref($dt) ? ref($dt):'SCALAR')."), not a DateTime object") if ref($dt) ne 'DateTime';
286 # FIXME: see bug 13242 => no TZ for dates 'infinite'
287 if ( $dt->ymd !~ /^9999/ ) {
288 my $tz = $dateonly ? DateTime::TimeZone->new(name => 'floating') : C4::Context->tz;
289 $dt->set_time_zone( $tz );
293 defined $force_pref ? $force_pref : C4::Context->preference('dateformat');
295 my $time_format = $force_time || C4::Context->preference('TimeFormat') || q{};
296 my $time = ( $time_format eq '12hr' ) ? '%I:%M %p' : '%H:%M';
298 if ( $pref =~ m/^iso/ ) {
300 ? $dt->strftime("%Y-%m-%d")
301 : $dt->strftime("%Y-%m-%d $time");
303 elsif ( $pref =~ m/^rfc3339/ ) {
305 $date = $dt->strftime('%FT%T%z');
306 substr($date, -2, 0, ':'); # timezone "HHmm" => "HH:mm"
309 $date = $dt->strftime("%Y-%m-%d");
312 elsif ( $pref =~ m/^metric/ ) {
314 ? $dt->strftime("%d/%m/%Y")
315 : $dt->strftime("%d/%m/%Y $time");
317 elsif ( $pref =~ m/^dmydot/ ) {
319 ? $dt->strftime("%d.%m.%Y")
320 : $dt->strftime("%d.%m.%Y $time");
323 elsif ( $pref =~ m/^us/ ) {
325 ? $dt->strftime("%m/%d/%Y")
326 : $dt->strftime("%m/%d/%Y $time");
330 ? $dt->strftime("%Y-%m-%d")
331 : $dt->strftime("%Y-%m-%d $time");
334 if ( $as_due_date ) {
335 $time_format eq '12hr'
336 ? $date =~ s| 11:59 PM$||
337 : $date =~ s| 23:59$||;
343 =head2 format_sqldatetime
345 $string = format_sqldatetime( $string_as_returned_from_db );
347 a convenience routine for calling dt_from_string and formatting the result
348 with output_pref as it is a frequent activity in scripts
352 sub format_sqldatetime {
354 my $force_pref = shift; # if testing we want to override Context
355 my $force_time = shift;
356 my $dateonly = shift;
358 if ( defined $str && $str =~ m/^\d{4}-\d{2}-\d{2}/ ) {
359 my $dt = dt_from_string( $str, 'sql' );
360 return q{} unless $dt;
361 $dt->truncate( to => 'minute' );
364 dateformat => $force_pref,
365 timeformat => $force_time,
366 dateonly => $dateonly