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   1  <?php
   2  # MantisBT - A PHP based bugtracking system
   3  
   4  # MantisBT is free software: you can redistribute it and/or modify
   5  # it under the terms of the GNU General Public License as published by
   6  # the Free Software Foundation, either version 2 of the License, or
   7  # (at your option) any later version.
   8  #
   9  # MantisBT is distributed in the hope that it will be useful,
  10  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  # GNU General Public License for more details.
  13  #
  14  # You should have received a copy of the GNU General Public License
  15  # along with MantisBT.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Date API
  19   *
  20   * @package CoreAPI
  21   * @subpackage DateAPI
  22   * @copyright Copyright (C) 2000 - 2002  Kenzaburo Ito - kenito@300baud.org
  23   * @copyright Copyright (C) 2002 - 2011  MantisBT Team - mantisbt-dev@lists.sourceforge.net
  24   * @link http://www.mantisbt.org
  25   *
  26   * @uses config_api.php
  27   * @uses constant_inc.php
  28   * @uses helper_api.php
  29   * @uses html_api.php
  30   * @uses lang_api.php
  31   */
  32  
  33  require_api( 'config_api.php' );
  34  require_api( 'constant_inc.php' );
  35  require_api( 'helper_api.php' );
  36  require_api( 'html_api.php' );
  37  require_api( 'lang_api.php' );
  38  
  39  /**
  40   * Keeps track of whether the external files required for jscalendar to work
  41   * have already been included in the output sent to the client. jscalendar
  42   * will not work correctly if it is included multiple times on the same page.
  43   * @global bool $g_jscalendar_included_already
  44   */
  45  $g_calendar_already_imported = false;
  46  
  47  /**
  48   * checks if date is null
  49   * @param int $p_date
  50   * @return bool
  51   * @access public
  52   */
  53  function date_is_null( $p_date ) {
  54      return $p_date == date_get_null();
  55  }
  56  
  57  /**
  58   * gets null date
  59   * @return int
  60   * @access public
  61   */
  62  function date_get_null() {
  63      return 1;
  64  }
  65  
  66  $g_cache_timezone = array();
  67  
  68  /**
  69   * set new timezone
  70   * @return null
  71   * @access public
  72   */
  73  function date_set_timezone( $p_timezone ) {
  74      global $g_cache_timezone;
  75  
  76      array_push( $g_cache_timezone, date_default_timezone_get() );
  77  
  78      if( !date_default_timezone_set( $p_timezone ) ) {
  79          // unable to set timezone
  80          trigger_error( ERROR_UPDATING_TIMEZONE, WARNING );
  81      }
  82  }
  83  
  84  /**
  85   * restore previous timezone
  86   * @return null
  87   * @access public
  88   */
  89  function date_restore_timezone( ) {
  90      global $g_cache_timezone;
  91  
  92      $t_timezone = array_pop( $g_cache_timezone );
  93  
  94      if( $t_timezone === null ) {
  95          return;
  96      }
  97  
  98      if( !date_default_timezone_set( $t_timezone ) ) {
  99          // unable to set timezone
 100          trigger_error( ERROR_UPDATING_TIMEZONE, WARNING );
 101      }
 102  }
 103  
 104  /**
 105   *
 106   * @param int $p_month
 107   * @return null
 108   * @access public
 109   */
 110  function print_month_option_list( $p_month = 0 ) {
 111      for( $i = 1;$i <= 12;$i++ ) {
 112          $month_name = date( 'F', mktime( 0, 0, 0, $i, 1, 2000 ) );
 113          if( $i == $p_month ) {
 114              echo "<option value=\"$i\" selected=\"selected\">" . lang_get( 'month_' . utf8_strtolower($month_name)) . "</option>";
 115          } else {
 116              echo "<option value=\"$i\">" . lang_get( 'month_' . utf8_strtolower($month_name)) . "</option>";
 117          }
 118      }
 119  }
 120  
 121  /**
 122   *
 123   *
 124   * @param int $p_month
 125   * @return null
 126   * @access public
 127   */
 128  function print_numeric_month_option_list( $p_month = 0 ) {
 129      for( $i = 1;$i <= 12;$i++ ) {
 130          if( $i == $p_month ) {
 131              echo "<option value=\"$i\" selected=\"selected\">$i</option>";
 132          } else {
 133              echo "<option value=\"$i\">$i</option>";
 134          }
 135      }
 136  }
 137  
 138  /**
 139   *
 140   * @param int $p_day
 141   * @return null
 142   * @access public
 143   */
 144  function print_day_option_list( $p_day = 0 ) {
 145      for( $i = 1;$i <= 31;$i++ ) {
 146          if( $i == $p_day ) {
 147              echo "<option value=\"$i\" selected=\"selected\">$i</option>";
 148          } else {
 149              echo "<option value=\"$i\">$i</option>";
 150          }
 151      }
 152  }
 153  
 154  /**
 155   *
 156   * @param int $p_year
 157   * @return null
 158   * @access public
 159   */
 160  function print_year_option_list( $p_year = 0 ) {
 161      $current_year = date( "Y" );
 162  
 163      for( $i = $current_year;$i > 1999;$i-- ) {
 164          if( $i == $p_year ) {
 165              echo "<option value=\"$i\" selected=\"selected\">$i</option>";
 166          } else {
 167              echo "<option value=\"$i\">$i</option>";
 168          }
 169      }
 170  }
 171  
 172  /**
 173   *
 174   * @param int $p_year
 175   * @param int $p_start
 176   * @param int $p_end
 177   * @return null
 178   * @access public
 179   */
 180  function print_year_range_option_list( $p_year = 0, $p_start = 0, $p_end = 0 ) {
 181      $t_current = date( 'Y' );
 182      $t_forward_years = config_get( 'forward_year_count' );
 183  
 184      $t_start_year = $p_start;
 185      if( $t_start_year == 0 ) {
 186          $t_backward_years = config_get( 'backward_year_count' );
 187          $t_start_year = $t_current - $t_backward_years;
 188      }
 189  
 190      if(( $p_year < $t_start_year ) && ( $p_year != 0 ) ) {
 191          $t_start_year = $p_year;
 192      }
 193  
 194      $t_end_year = $p_end;
 195      if( $t_end_year == 0 ) {
 196          $t_end_year = $t_current + $t_forward_years;
 197      }
 198      if( $p_year > $t_end_year ) {
 199          $t_end_year = $p_year + $t_forward_years;
 200      }
 201  
 202      for( $i = $t_start_year;$i <= $t_end_year;$i++ ) {
 203          if( $i == $p_year ) {
 204              echo "<option value=\"$i\" selected=\"selected\">$i</option>";
 205          } else {
 206              echo "<option value=\"$i\">$i</option>";
 207          }
 208      }
 209  }
 210  
 211  /**
 212   *
 213   * @param string $p_name
 214   * @param string $p_format
 215   * @param int $p_date
 216   * @param bool $p_default_disable
 217   * @param bool $p_allow_blank
 218   * @param int $p_year_start
 219   * @param int $p_year_end
 220   * @return null
 221   * @access public
 222   */
 223  function print_date_selection_set( $p_name, $p_format, $p_date = 0, $p_default_disable = false, $p_allow_blank = false, $p_year_start = 0, $p_year_end = 0 ) {
 224      $t_chars = preg_split( '//', $p_format, -1, PREG_SPLIT_NO_EMPTY );
 225      if( $p_date != 0 ) {
 226          $t_date = preg_split( '/-/', date( 'Y-m-d', $p_date ), -1, PREG_SPLIT_NO_EMPTY );
 227      } else {
 228          $t_date = array(
 229              0,
 230              0,
 231              0,
 232          );
 233      }
 234  
 235      $t_disable = '';
 236      if( $p_default_disable == true ) {
 237          $t_disable = ' disabled="disabled"';
 238      }
 239      $t_blank_line = '';
 240      if( $p_allow_blank == true ) {
 241          $t_blank_line = "<option value=\"0\"></option>";
 242      }
 243  
 244      foreach( $t_chars as $t_char ) {
 245          if( strcmp( $t_char, "M" ) == 0 ) {
 246              echo "<select ", helper_get_tab_index(), " name=\"" . $p_name . "_month\"$t_disable>";
 247              echo $t_blank_line;
 248              print_month_option_list( $t_date[1] );
 249              echo "</select>\n";
 250          }
 251          if( strcmp( $t_char, "m" ) == 0 ) {
 252              echo "<select ", helper_get_tab_index(), " name=\"" . $p_name . "_month\"$t_disable>";
 253              echo $t_blank_line;
 254              print_numeric_month_option_list( $t_date[1] );
 255              echo "</select>\n";
 256          }
 257          if( strcasecmp( $t_char, "D" ) == 0 ) {
 258              echo "<select ", helper_get_tab_index(), " name=\"" . $p_name . "_day\"$t_disable>";
 259              echo $t_blank_line;
 260              print_day_option_list( $t_date[2] );
 261              echo "</select>\n";
 262          }
 263          if( strcasecmp( $t_char, "Y" ) == 0 ) {
 264              echo "<select ", helper_get_tab_index(), " name=\"" . $p_name . "_year\"$t_disable>";
 265              echo $t_blank_line;
 266              print_year_range_option_list( $t_date[0], $p_year_start, $p_year_end );
 267              echo "</select>\n";
 268          }
 269      }
 270  }