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;
167 if ( $date_string =~ $regex ) {
173 minute => $+{minute},
174 second => $+{second},
178 # If offset given, set inbound timezone using it.
179 $tz = DateTime::TimeZone->new( name => $+{offset} . $+{hours} . $+{minutes} );
181 } elsif ( $do_fallback && $date_string =~ $fallback_re ) {
187 minute => $+{minute},
188 second => $+{second},
193 die "The given date ($date_string) does not match the date format ($date_format)";
196 # system allows the 0th of the month
197 $dt_params{day} = '01' if $dt_params{day} eq '00';
199 # Set default hh:mm:ss to 00:00:00
200 my $date_only = ( !defined( $dt_params{hour} )
201 && !defined( $dt_params{minute} )
202 && !defined( $dt_params{second} ) );
203 $dt_params{hour} = 00 unless defined $dt_params{hour};
204 $dt_params{minute} = 00 unless defined $dt_params{minute};
205 $dt_params{second} = 00 unless defined $dt_params{second};
208 if ( $ampm eq 'AM' ) {
209 $dt_params{hour} = 00 if $dt_params{hour} == 12;
210 } elsif ( $dt_params{hour} != 12 ) { # PM
211 $dt_params{hour} += 12;
212 $dt_params{hour} = 00 if $dt_params{hour} == 24;
220 # No TZ for dates 'infinite' => see bug 13242
221 ( $dt_params{year} < 9999 ? ( time_zone => $tz ) : () ),
225 $tz = DateTime::TimeZone->new( name => 'floating' );
229 # No TZ for dates 'infinite' => see bug 13242
230 ( $dt_params{year} < 9999 ? ( time_zone => $tz ) : () ),
234 # Convert to configured timezone (unless we started with a dateonly string or had to drop to floating time)
235 $dt->set_time_zone($server_tz) unless ( $date_only || $floating );
242 $date_string = output_pref({ dt => $dt [, dateformat => $date_format, timeformat => $time_format, dateonly => 0|1, as_due_date => 0|1 ] });
243 $date_string = output_pref( $dt );
245 Returns a string containing the time & date formatted as per the C4::Context setting,
246 or C<undef> if C<undef> was provided.
248 This routine can either be passed a DateTime object or or a hashref. If it is
249 passed a hashref, the expected keys are a mandatory 'dt' for the DateTime,
250 an optional 'dateformat' to override the dateformat system preference, an
251 optional 'timeformat' to override the TimeFormat system preference value,
252 and an optional 'dateonly' to specify that only the formatted date string
253 should be returned without the time.
259 my ( $dt, $str, $force_pref, $force_time, $dateonly, $as_due_date );
260 if ( ref $params eq 'HASH' ) {
262 $str = $params->{str};
263 $force_pref = $params->{dateformat}; # if testing we want to override Context
264 $force_time = $params->{timeformat};
265 $dateonly = $params->{dateonly} || 0; # if you don't want the hours and minutes
266 $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)
271 Koha::Exceptions::WrongParameter->throw( 'output_pref should not be called with both dt and str parameter' ) if $dt and $str;
275 $dt = eval { dt_from_string( $str ) };
276 Koha::Exceptions::WrongParameter->throw("Invalid date '$str' passed to output_pref" ) if $@;
279 return if !defined $dt; # NULL date
280 Koha::Exceptions::WrongParameter->throw( "output_pref is called with '$dt' (ref ". ( ref($dt) ? ref($dt):'SCALAR')."), not a DateTime object") if ref($dt) ne 'DateTime';
282 # FIXME: see bug 13242 => no TZ for dates 'infinite'
283 if ( $dt->ymd !~ /^9999/ ) {
284 my $tz = $dateonly ? DateTime::TimeZone->new(name => 'floating') : C4::Context->tz;
285 $dt->set_time_zone( $tz );
289 defined $force_pref ? $force_pref : C4::Context->preference('dateformat');
291 my $time_format = $force_time || C4::Context->preference('TimeFormat') || q{};
292 my $time = ( $time_format eq '12hr' ) ? '%I:%M %p' : '%H:%M';
294 if ( $pref =~ m/^iso/ ) {
296 ? $dt->strftime("%Y-%m-%d")
297 : $dt->strftime("%Y-%m-%d $time");
299 elsif ( $pref =~ m/^rfc3339/ ) {
301 $date = $dt->strftime('%FT%T%z');
302 substr($date, -2, 0, ':'); # timezone "HHmm" => "HH:mm"
305 $date = $dt->strftime("%Y-%m-%d");
308 elsif ( $pref =~ m/^metric/ ) {
310 ? $dt->strftime("%d/%m/%Y")
311 : $dt->strftime("%d/%m/%Y $time");
313 elsif ( $pref =~ m/^dmydot/ ) {
315 ? $dt->strftime("%d.%m.%Y")
316 : $dt->strftime("%d.%m.%Y $time");
319 elsif ( $pref =~ m/^us/ ) {
321 ? $dt->strftime("%m/%d/%Y")
322 : $dt->strftime("%m/%d/%Y $time");
326 ? $dt->strftime("%Y-%m-%d")
327 : $dt->strftime("%Y-%m-%d $time");
330 if ( $as_due_date ) {
331 $time_format eq '12hr'
332 ? $date =~ s| 11:59 PM$||
333 : $date =~ s| 23:59$||;
339 =head2 format_sqldatetime
341 $string = format_sqldatetime( $string_as_returned_from_db );
343 a convenience routine for calling dt_from_string and formatting the result
344 with output_pref as it is a frequent activity in scripts
348 sub format_sqldatetime {
350 my $force_pref = shift; # if testing we want to override Context
351 my $force_time = shift;
352 my $dateonly = shift;
354 if ( defined $str && $str =~ m/^\d{4}-\d{2}-\d{2}/ ) {
355 my $dt = dt_from_string( $str, 'sql' );
356 return q{} unless $dt;
357 $dt->truncate( to => 'minute' );
360 dateformat => $force_pref,
361 timeformat => $force_time,
362 dateonly => $dateonly