Koha/C4/Date.pm
2007-04-18 17:00:14 +00:00

237 lines
5.9 KiB
Perl

package C4::Date;
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
use C4::Context;
use Date::Calc qw(Parse_Date Decode_Date_EU Decode_Date_US Time_to_Date check_date);
require Exporter;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
$VERSION = 0.01;
@ISA = qw(Exporter);
@EXPORT = qw(
&display_date_format
&get_date_format_string_for_DHTMLcalendar
&format_date
&format_date_in_iso
&fixdate
);
sub get_date_format
{
#Get the database handle
my $dbh = C4::Context->dbh;
return C4::Context->preference('dateformat');
}
sub display_date_format
{
my $dateformat = get_date_format();
if ( $dateformat eq "us" )
{
return "mm/dd/yyyy";
}
elsif ( $dateformat eq "metric" )
{
return "dd/mm/yyyy";
}
elsif ( $dateformat eq "iso" )
{
return "yyyy-mm-dd";
}
else
{
return "Invalid date format: $dateformat. Please change in system preferences";
}
}
sub get_date_format_string_for_DHTMLcalendar {
my $dateformat = get_date_format();
if ( $dateformat eq 'us' ) {
return '%m/%d/%Y';
}
elsif ( $dateformat eq 'metric' ) {
return '%d/%m/%Y';
}
elsif ( $dateformat eq "iso" ) {
return '%Y-%m-%d';
}
else {
return 'Invalid date format: '
. $dateformat . '.'
. ' Please change in system preferences';
}
}
sub format_date
{
my $olddate = shift;
my $newdate;
if ( ! $olddate )
{
return "";
}
# warn $olddate;
# $olddate=~s#/|\.|-##g;
my ($year,$month,$day)=Parse_Date($olddate);
($year,$month,$day)=split /-|\/|\.|:/,$olddate unless ($year && $month);
# warn "$olddate annee $year mois $month jour $day";
if ($year>0 && $month>0){
my $dateformat = get_date_format();
$dateformat="metric" if (index(":",$olddate)>0);
if ( $dateformat eq "us" )
{
$newdate = sprintf("%02d/%02d/%04d",$month,$day,$year);
}
elsif ( $dateformat eq "metric" )
{
$newdate = sprintf("%02d/%02d/%04d",$day,$month,$year);
}
elsif ( $dateformat eq "iso" )
{
# Date_Init("DateFormat=iso");
$newdate = sprintf("%04d-%02d-%02d",$year,$month,$day);
}
else
{
return "Invalid date format: $dateformat. Please change in system preferences";
}
# warn "newdate :$newdate";
}
return $newdate;
}
sub format_date_in_iso
{
my $olddate = shift;
my $newdate;
if ( ! $olddate )
{
return "";
}
if (check_whether_iso($olddate)){
return $olddate;
} else {
my $dateformat = get_date_format();
my ($year,$month,$day);
my @date;
my $tmpolddate=$olddate;
$tmpolddate=~s#/|\.|-|\\##g;
$dateformat="metric" if (index(":",$olddate)>0);
if ( $dateformat eq "us" )
{
($month,$day,$year)=split /-|\/|\.|:/,$olddate unless ($year && $month);
if ($month>0 && $day >0){
@date = Decode_Date_US($tmpolddate);
} else {
@date=($year, $month,$day)
}
}
elsif ( $dateformat eq "metric" )
{
($day,$month,$year)=split /-|\/|\.|:/,$olddate unless ($year && $month);
if ($month>0 && $day >0){
@date = Decode_Date_EU($tmpolddate);
} else {
@date=($year, $month,$day)
}
}
elsif ( $dateformat eq "iso" )
{
($year,$month,$day)=split /-|\/|\.|:/,$olddate unless ($year && $month);
if ($month>0 && $day >0){
@date=($year, $month,$day) if (check_date($year,$month,$day));
} else {
@date=($year, $month,$day)
}
}
else
{
return "9999-99-99";
}
$newdate = sprintf("%04d-%02d-%02d",$date[0],$date[1],$date[2]);
return $newdate;
}
}
sub check_whether_iso
{
my $olddate = shift;
my @olddate= split /\-/,$olddate ;
return 1 if (length($olddate[0])==4 && length($olddate[1])<=2 && length($olddate[2])<=2);
return 0;
}
=head2 fixdate
( $date, $invalidduedate ) = fixdate( $year, $month, $day );
=cut
sub fixdate {
my ( $year, $month, $day ) = @_;
my $invalidduedate;
my $date;
if ( $year && $month && $day ) {
if ( ( $year eq 0 ) && ( $month eq 0 ) && ( $year eq 0 ) ) {
}
else {
if ( ( $year eq 0 ) || ( $month eq 0 ) || ( $year eq 0 ) ) {
$invalidduedate = 1;
}
else {
if (
( $day > 30 )
&& ( ( $month == 4 )
|| ( $month == 6 )
|| ( $month == 9 )
|| ( $month == 11 ) )
)
{
$invalidduedate = 1;
}
elsif ( ( $day > 29 ) && ( $month == 2 ) ) {
$invalidduedate = 1;
}
elsif (
( $month == 2 )
&& ( $day > 28 )
&& ( ( $year % 4 )
&& ( ( !( $year % 100 ) || ( $year % 400 ) ) ) )
)
{
$invalidduedate = 1;
}
else {
$date = "$year-$month-$day";
}
}
}
}
return ( $date, $invalidduedate );
}
1;