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Diff for /loncom/localize/lonlocal.pm between versions 1.58 and 1.59

version 1.58, 2009/05/04 21:44:00 version 1.59, 2009/05/06 19:25:49
Line 393  sub gettimezone { Line 393  sub gettimezone {
     return 'local';      return 'local';
 }  }
   
 our $timezone_local;  
   
 sub locallocaltime {  sub locallocaltime {
     my ($thistime,$timezone,$datetime) = @_;      my ($thistime,$timezone) = @_;
   
     if (!defined($thistime) || $thistime eq '') {      if (!defined($thistime) || $thistime eq '') {
  return &mt('Never');   return &mt('Never');
Line 410  sub locallocaltime { Line 408  sub locallocaltime {
         return &mt('Never');          return &mt('Never');
     }      }
   
    my $dt;      my $dt = DateTime->from_epoch(epoch => $thistime)
    my $convert_time;                       ->set_time_zone(gettimezone($timezone));
   
    #### START # Speed up if this function is called often ####       # TimeZone tries to determine the 'local' timezone from $ENV{TZ} if this
          # fails it searches through various system files. Under certain
    # Is a $datetime parameter set?      # circumstances this is an extremly expensive operation.
    if(defined($datetime)) {      # So after the first run we store the timezone in $ENV{TZ} to significantly
  # Check for an instance of a DateTime object      # speed up future lookups. 
     if(!(defined $$datetime)) {      $ENV{TZ} = $dt->time_zone()->name() 
  # No object, create one          if (! $ENV{TZ} && gettimezone($timezone) eq 'local');
  $$datetime = DateTime->from_epoch(epoch => $thistime)  
                          ->set_time_zone(&gettimezone($timezone));  
  $dt = $$datetime;  
    } else {  
  # If the return-value is "local", we have to convert it for DateTime  
   
  # Converts the "local"-String only once  
  if(!defined($timezone_local))  
  {  
  $timezone_local = DateTime::TimeZone->new( name => gettimezone('local'))->name();  
  }  
   
  my $timezone_now;  
   
  if(gettimezone($timezone) == 'local')  
  {  
  $timezone_now = $timezone_local;  
  } else {  
  $timezone_now = gettimezone($timezone);  
  }  
   
  # Has the timezone changed?  
  if($timezone_now eq $$datetime->time_zone_short_name() ||  
    $timezone_now eq $$datetime->time_zone_long_name())  
  {  
  # There is already an object (dereference)  
  $dt = $$datetime;  
   
  # We need this as temporary value  
  $convert_time = DateTime->from_epoch( epoch => $thistime );  
                                        #->set_time_zone('floating');  
    
  # Preventing a set_time_zone call (time consuming)  
  # Using old instance of DateTime with timezone  
  $dt->set( year => $convert_time->year(),  
   month => $convert_time->month(),  
   day => $convert_time->day(),  
   hour => $convert_time->hour(),  
   minute => $convert_time->minute(),  
   second => $convert_time->second() );  
     } else {  
  # The timezone has changed since last time  
  $$datetime = DateTime->from_epoch(epoch => $thistime)  
                           ->set_time_zone(&gettimezone($timezone));  
  $dt = $$datetime;  
  }   
  }  
    } else {  
  # There is no $datetime parameter  
  $dt = DateTime->from_epoch(epoch => $thistime)  
                       ->set_time_zone(&gettimezone($timezone));  
    }  
    #### END # Speed up if this function is called often ####  
   
     if ((&current_language=~/^en/) || (!$lh)) {      if ((&current_language=~/^en/) || (!$lh)) {
   
Removed from v.1.58  
changed lines
  Added in v.1.59

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