Merge pull request #102 from tobiasd/master

[friendica.git] / include / datetime.php

diff --git a/include/datetime.php b/include/datetime.php
index 02250ec073e3c87633b26b3660d0aa51eeb42512..f7be5bdb11666d789af3f3a908515671583b7af9 100644 (file)
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -5,8 +5,8 @@
 if(! function_exists('timezone_cmp')) {
 function timezone_cmp($a, $b) {
        if(strstr($a,'/') && strstr($b,'/')) {
-               if ($a == $b) return 0;
-               return ($a < $b) ? -1 : 1;
+               if ( t($a) == t($b)) return 0;
+               return ( t($a) < t($b)) ? -1 : 1;
        }
        if(strstr($a,'/')) return -1;
        if(strstr($b,'/')) return  1;
@@ -41,9 +41,9 @@ function select_timezone($current = 'America/Los_Angeles') {
                }
                else {
                        $city = $ex[0];
-                       if($continent != 'Miscellaneous') {
+                       if($continent != t('Miscellaneous')) {
                                $o .= '</optgroup>';
-                               $continent = 'Miscellaneous';
+                               $continent = t('Miscellaneous');
                                $o .= '<optgroup label="' . t($continent) . '">';       
                        }
                }
@@ -171,11 +171,12 @@ function relative_date($posted_date) {
 // Returns age in years, given a date of birth,
 // the timezone of the person whose date of birth is provided,
 // and the timezone of the person viewing the result.
-// Why? Bear with me. Let's say I live in Mittagong, Australia. My birthday 
-// is on New Year's. You live in San Bruno, California.
+// Why? Bear with me. Let's say I live in Mittagong, Australia, and my 
+// birthday is on New Year's. You live in San Bruno, California.
 // When exactly are you going to see my age increase?
-// A: 5:00 AM Dec 31. That's when I start celebrating, and when 
-// my birthday arrives in your timezone.
+// A: 5:00 AM Dec 31 San Bruno time. That's precisely when I start 
+// celebrating and become a year older. If you wish me happy birthday 
+// on January 1 (San Bruno time), you'll be a day late. 
    
 function age($dob,$owner_tz = '',$viewer_tz = '') {
        if(! intval($dob))
@@ -195,3 +196,114 @@ function age($dob,$owner_tz = '',$viewer_tz = '') {
                $year_diff--;
        return $year_diff;
 }
+
+
+
+// Get days in month
+// get_dim($year, $month);
+// returns number of days.
+// $month[1] = 'January'; 
+//   to match human usage.
+
+if(! function_exists('get_dim')) {
+function get_dim($y,$m) {
+
+  $dim = array( 0,
+    31, 28, 31, 30, 31, 30,
+    31, 31, 30, 31, 30, 31);
+ 
+  if($m != 2)
+    return $dim[$m];
+  if(((($y % 4) == 0) && (($y % 100) != 0)) || (($y % 400) == 0))
+    return 29;
+  return $dim[2];
+}}
+
+
+// Returns the first day in month for a given month, year
+// get_first_dim($year,$month)
+// returns 0 = Sunday through 6 = Saturday
+// Months start at 1.
+
+if(! function_exists('get_first_dim')) {
+function get_first_dim($y,$m) {
+  $d = sprintf('%04d-%02d-01 00:00', intval($y), intval($m));
+  return datetime_convert('UTC','UTC',$d,'w');
+}}
+
+// output a calendar for the given month, year.
+// if $links are provided (array), e.g. $links[12] => 'http://mylink' , 
+// date 12 will be linked appropriately. Today's date is also noted by 
+// altering td class.
+// Months count from 1.
+
+
+// TODO: provide (prev,next) links, define class variations for different size calendars
+
+
+if(! function_exists('cal')) {
+function cal($y = 0,$m = 0, $links = false) {
+
+
+       // month table - start at 1 to match human usage.
+
+       $mtab = array(' ',
+         'January','February','March',
+         'April','May','June',
+         'July','August','September',
+         'October','November','December'
+       ); 
+
+       $thisyear = datetime_convert('UTC',date_default_timezone_get(),'now','Y');
+       $thismonth = datetime_convert('UTC',date_default_timezone_get(),'now','m');
+       if(! $y)
+               $y = $thisyear;
+       if(! $m)
+               $m = intval($thismonth);
+
+  $dn = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
+  $f = get_first_dim($y,$m);
+  $l = get_dim($y,$m);
+  $d = 1;
+  $dow = 0;
+  $started = false;
+
+  if(($y == $thisyear) && ($m == $thismonth))
+    $tddate = intval(datetime_convert('UTC',date_default_timezone_get(),'now','j'));
+
+       $str_month = day_translate($mtab[$m]);
+  $o = '<table class="calendar">';
+  $o .= "<caption>$str_month $y</caption><tr>";
+  for($a = 0; $a < 7; $a ++)
+     $o .= '<th>' . mb_substr(day_translate($dn[$a]),0,3,'UTF-8') . '</th>';
+  $o .= '</tr><tr>';
+
+  while($d <= $l) {
+    if(($dow == $f) && (! $started))
+      $started = true;
+    $today = (((isset($tddate)) && ($tddate == $d)) ? "class=\"today\" " : '');
+    $o .= "<td $today>";
+       $day = str_replace(' ','&nbsp;',sprintf('%2.2d', $d));
+    if($started) {
+      if(is_array($links) && isset($links[$d]))
+        $o .=  "<a href=\"{$links[$d]}\">$day</a>";
+      else
+        $o .= $day;
+      $d ++;
+    }
+    else
+      $o .= '&nbsp;';
+    $o .= '</td>';
+    $dow ++;
+    if(($dow == 7) && ($d <= $l)) {
+      $dow = 0;
+      $o .= '</tr><tr>';
+    }
+  }
+  if($dow)
+    for($a = $dow; $a < 7; $a ++)
+       $o .= '<td>&nbsp;</td>';
+  $o .= '</tr></table>'."\r\n";  
+  
+  return $o;
+}}