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<?php
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/**
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4
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* @file
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5
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* SQL helper for Date API.
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6
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*
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7
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* @todo
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8
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* Add experimental support for sqlite: http://www.sqlite.org/lang_datefunc.html
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9
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* and Oracle (http://psoug.org/reference/date_func.html and
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10
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* http://psoug.org/reference/datatypes.html) date/time functions.
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11
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*/
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12
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13
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/**
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14
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* A helper function to do cross-database concatation of date parts.
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15
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*
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* @param array $array
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* An array of values to be concatonated in sql.
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18
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*
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* @return string
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20
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* Correct sql string for database type.
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21
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*/
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function date_sql_concat(array $array) {
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23
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switch (Database::getConnection()->databaseType()) {
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24
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case 'mysql':
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return "CONCAT(" . implode(",", $array) . ")";
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26
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case 'pgsql':
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return implode(" || ", $array);
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29
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}
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30
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}
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31
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32
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/**
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33
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* Helper function to do cross-database NULL replacements.
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34
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*
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* @param array $array
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* An array of values to test for NULL values.
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*
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* @return string
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39
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* SQL statement to return the first non-NULL value in the list.
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40
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*/
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function date_sql_coalesce(array $array) {
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42
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switch (Database::getConnection()->databaseType()) {
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43
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case 'mysql':
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44
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case 'pgsql':
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45
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return "COALESCE(" . implode(',', $array) . ")";
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}
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47
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}
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48
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49
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/**
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50
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* A helper function to do cross-database padding of date parts.
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51
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*
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* @param string $str
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53
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* A string to apply padding to.
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54
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* @param int $size
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* The size the final string should be.
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56
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* @param string $pad
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* The value to pad the string with.
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* @param string $side
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* The side of the string to pad.
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*/
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function date_sql_pad($str, $size = 2, $pad = '0', $side = 'l') {
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62
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switch ($side) {
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case 'r':
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return "RPAD($str, $size, '$pad')";
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65
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default:
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67
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return "LPAD($str, $size, '$pad')";
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68
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}
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69
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}
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/**
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* A class to manipulate date SQL.
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*/
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class date_sql_handler {
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var $db_type = NULL;
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var $date_type = DATE_DATETIME;
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// A string timezone name.
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var $db_timezone = 'UTC';
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// A string timezone name.
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var $local_timezone = NULL;
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// Use if the db timezone is stored in a field.
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var $db_timezone_field = NULL;
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// Use if the local timezone is stored in a field.
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var $local_timezone_field = NULL;
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// Use if the offset is stored in a field.
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var $offset_field = NULL;
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/**
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* The object constuctor.
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90
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*/
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public function __construct($date_type = DATE_DATETIME, $local_timezone = NULL, $offset = '+00:00') {
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$this->db_type = Database::getConnection()->databaseType();
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$this->date_type = $date_type;
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$this->db_timezone = 'UTC';
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$this->local_timezone = isset($local_timezone) ? $local_timezone : date_default_timezone();
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$this->set_db_timezone($offset);
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}
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98
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99
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/**
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* See if the db has timezone name support.
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*/
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public function db_tz_support($reset = FALSE) {
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$has_support = variable_get('date_db_tz_support', -1);
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104
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if ($has_support == -1 || $reset) {
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$has_support = FALSE;
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switch ($this->db_type) {
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case 'mysql':
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$test = db_query("SELECT CONVERT_TZ('2008-02-15 12:00:00', 'UTC', 'US/Central')")->fetchField();
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if ($test == '2008-02-15 06:00:00') {
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$has_support = TRUE;
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}
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break;
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case 'pgsql':
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// PostgreSQL doesn't always have timezone support enabled, so catch
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// exceptions so they don't break the site. This is safe to do as it
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// is only checking to see if timezones are actually supported.
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try {
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$test = db_query("SELECT '2008-02-15 12:00:00 UTC' AT TIME ZONE 'US/Central'")->fetchField();
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if ($test == '2008-02-15 06:00:00') {
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$has_support = TRUE;
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}
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123
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}
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124
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catch (PDOException $e) {
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// No support.
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}
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break;
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128
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}
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129
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variable_set('date_db_tz_support', $has_support);
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130
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}
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return $has_support;
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132
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}
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/**
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135
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* Set the database timzone offset.
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136
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*
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* Setting the db timezone to UTC is done to ensure consistency in date
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138
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* handling whether or not the database can do proper timezone conversion.
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139
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*
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140
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* Views filters that not exposed are cached and won't set the timezone
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141
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* so views date filters should add 'cacheable' => 'no' to their
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* definitions to ensure that the database timezone gets set properly
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* when the query is executed.
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*
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145
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* @param string $offset
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* An offset value to set the database timezone to. This will only
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* set a fixed offset, not a timezone, so any value other than
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148
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* '+00:00' should be used with caution.
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149
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*/
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public function set_db_timezone($offset = '+00:00') {
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static $already_set = FALSE;
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$type = Database::getConnection()->databaseType();
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153
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if (!$already_set) {
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154
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switch ($type) {
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case 'mysql':
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db_query("SET @@session.time_zone = '$offset'");
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break;
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158
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case 'pgsql':
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db_query("SET TIME ZONE INTERVAL '$offset' HOUR TO MINUTE");
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break;
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162
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case 'sqlsrv':
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// Issue #1201342, This is the wrong way to set the timezone, this
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// still needs to be fixed. In the meantime, commenting this out makes
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// SQLSRV functional.
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// db_query('TimeZone.setDefault(TimeZone.getTimeZone("GMT"))');
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break;
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169
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}
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$already_set = TRUE;
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}
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172
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}
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173
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174
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/**
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* Return timezone offset for the date being processed.
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*/
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public function get_offset($comp_date = NULL) {
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if (!empty($this->db_timezone) && !empty($this->local_timezone)) {
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if ($this->db_timezone != $this->local_timezone) {
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if (empty($comp_date)) {
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$comp_date = date_now($this->db_timezone);
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}
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$comp_date->setTimezone(timezone_open($this->local_timezone));
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return date_offset_get($comp_date);
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}
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}
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return 0;
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}
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189
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190
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/**
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* Helper function to create cross-database SQL dates.
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*
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* @param string $field
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* The real table and field name, like 'tablename.fieldname' .
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* @param string $offset
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* The name of a field that holds the timezone offset or an
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197
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* offset value. If NULL, the normal Drupal timezone handling
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* will be used, if $offset = 0 no adjustment will be made.
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*
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* @return string
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* An appropriate SQL string for the db type and field type.
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*/
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function sql_field($field, $offset = NULL, $comp_date = NULL) {
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if (strtoupper($field) == 'NOW') {
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// NOW() will be in UTC since that is what we set the db timezone to.
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$this->local_timezone = 'UTC';
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return $this->sql_offset('NOW()', $offset);
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}
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switch ($this->db_type) {
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case 'mysql':
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switch ($this->date_type) {
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case DATE_UNIX:
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$field = "FROM_UNIXTIME($field)";
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break;
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case DATE_ISO:
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$field = "STR_TO_DATE($field, '%Y-%m-%dT%T')";
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break;
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case DATE_DATETIME:
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break;
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}
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break;
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case 'pgsql':
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switch ($this->date_type) {
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case DATE_UNIX:
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$field = "TO_TIMESTAMP($field)";
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break;
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case DATE_ISO:
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$field = "TO_DATE($field, 'FMYYYY-FMMM-FMDDTFMHH24:FMMI:FMSS')";
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break;
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case DATE_DATETIME:
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break;
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}
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break;
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case 'sqlite':
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switch ($this->date_type) {
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case DATE_UNIX:
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$field = "datetime($field, 'unixepoch')";
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break;
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case DATE_ISO:
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case DATE_DATETIME:
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$field = "datetime($field)";
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break;
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}
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251
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break;
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252
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253
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case 'sqlsrv':
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254
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switch ($this->date_type) {
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case DATE_UNIX:
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$field = "DATEADD(s, $field, '19700101 00:00:00:000')";
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break;
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258
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259
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case DATE_ISO:
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260
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case DATE_DATETIME:
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261
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$field = "CAST($field as smalldatetime)";
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262
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break;
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263
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}
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264
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break;
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265
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266
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break;
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267
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}
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268
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// Adjust the resulting value to the right timezone/offset.
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269
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return $this->sql_tz($field, $offset, $comp_date);
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270
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}
|
271
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|
272
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/**
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273
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* Adjust a field value by an offset in seconds.
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274
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*/
|
275
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function sql_offset($field, $offset = NULL) {
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276
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if (!empty($offset)) {
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277
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switch ($this->db_type) {
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278
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case 'mysql':
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279
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return "ADDTIME($field, SEC_TO_TIME($offset))";
|
280
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|
281
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case 'pgsql':
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282
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return "($field + INTERVAL '$offset SECONDS')";
|
283
|
|
284
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case 'sqlite':
|
285
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return "datetime($field, '$offset seconds')";
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286
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|
287
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case 'sqlsrv':
|
288
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return "DATEADD(second, $offset, $field)";
|
289
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}
|
290
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}
|
291
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return $field;
|
292
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}
|
293
|
|
294
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/**
|
295
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* Adjusts a field value by time interval.
|
296
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*
|
297
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* @param string $field
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298
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* The field to be adjusted.
|
299
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* @param string $direction
|
300
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* Either ADD or SUB.
|
301
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* @param int $count
|
302
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* The number of values to adjust.
|
303
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* @param string $granularity
|
304
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* The granularity of the adjustment, should be singular, like SECOND,
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305
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* MINUTE, DAY, HOUR.
|
306
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*/
|
307
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function sql_date_math($field, $direction, $count, $granularity) {
|
308
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$granularity = strtoupper($granularity);
|
309
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switch ($this->db_type) {
|
310
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case 'mysql':
|
311
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switch ($direction) {
|
312
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case 'ADD':
|
313
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return "DATE_ADD(CAST($field AS DATETIME), INTERVAL $count $granularity)";
|
314
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|
315
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case 'SUB':
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316
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return "DATE_SUB(CAST($field AS DATETIME), INTERVAL $count $granularity)";
|
317
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}
|
318
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|
319
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case 'pgsql':
|
320
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$granularity .= 'S';
|
321
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switch ($direction) {
|
322
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case 'ADD':
|
323
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return "($field + INTERVAL '$count $granularity')";
|
324
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|
325
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case 'SUB':
|
326
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return "($field - INTERVAL '$count $granularity')";
|
327
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}
|
328
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case 'sqlite':
|
329
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$granularity .= 'S';
|
330
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switch ($direction) {
|
331
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case 'ADD':
|
332
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return "datetime($field, '+$count $granularity')";
|
333
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|
334
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case 'SUB':
|
335
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return "datetime($field, '-$count $granularity')";
|
336
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}
|
337
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}
|
338
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return $field;
|
339
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}
|
340
|
|
341
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/**
|
342
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* Select a date value from the database, adjusting for the timezone.
|
343
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*
|
344
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* Check whether database timezone conversion is supported in this system and
|
345
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* use it if possible, otherwise use an offset.
|
346
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*
|
347
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* @param string $field
|
348
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* The field to be adjusted.
|
349
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* @param bool $offset
|
350
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* Set a fixed offset or offset field to use for the date. If set, no
|
351
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* timezone conversion will be done and the offset will be used.
|
352
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*/
|
353
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function sql_tz($field, $offset = NULL, $comp_date = NULL) {
|
354
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// If the timezones are values they need to be quoted, but if they are
|
355
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// field names they do not.
|
356
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$db_zone = !empty($this->db_timezone_field) ? $this->db_timezone_field : "'{$this->db_timezone}'";
|
357
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$localzone = !empty($this->local_timezone_field) ? $this->local_timezone_field : "'{$this->local_timezone}'";
|
358
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// If a fixed offset is required, use it.
|
359
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if ($offset !== NULL) {
|
360
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return $this->sql_offset($field, $offset);
|
361
|
}
|
362
|
// If the db and local timezones are the same, make no adjustment.
|
363
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elseif ($db_zone == $localzone) {
|
364
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return $this->sql_offset($field, 0);
|
365
|
}
|
366
|
// If the db has no timezone support, adjust by the offset, could be either
|
367
|
// a field name or a value.
|
368
|
elseif (!$this->db_tz_support() || empty($localzone)) {
|
369
|
if (!empty($this->offset_field)) {
|
370
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return $this->sql_offset($field, $this->offset_field);
|
371
|
}
|
372
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else {
|
373
|
return $this->sql_offset($field, $this->get_offset($comp_date));
|
374
|
}
|
375
|
}
|
376
|
// Otherwise make a database timezone adjustment to the field.
|
377
|
else {
|
378
|
switch ($this->db_type) {
|
379
|
case 'mysql':
|
380
|
return "CONVERT_TZ($field, $db_zone, $localzone)";
|
381
|
|
382
|
case 'pgsql':
|
383
|
// WITH TIME ZONE assumes the date is using the system
|
384
|
// timezone, which should have been set to UTC.
|
385
|
return "$field::timestamp with time zone AT TIME ZONE $localzone";
|
386
|
}
|
387
|
}
|
388
|
}
|
389
|
|
390
|
/**
|
391
|
* Helper function to create cross-database SQL date formatting.
|
392
|
*
|
393
|
* @param string $format
|
394
|
* A format string for the result, like 'Y-m-d H:i:s' .
|
395
|
* @param string $field
|
396
|
* The real table and field name, like 'tablename.fieldname' .
|
397
|
*
|
398
|
* @return string
|
399
|
* An appropriate SQL string for the db type and field type.
|
400
|
*/
|
401
|
function sql_format($format, $field) {
|
402
|
switch ($this->db_type) {
|
403
|
case 'mysql':
|
404
|
$replace = array(
|
405
|
'Y' => '%Y',
|
406
|
'y' => '%y',
|
407
|
'M' => '%b',
|
408
|
'm' => '%m',
|
409
|
'n' => '%c',
|
410
|
'F' => '%M',
|
411
|
'D' => '%a',
|
412
|
'd' => '%d',
|
413
|
'l' => '%W',
|
414
|
'j' => '%e',
|
415
|
'W' => '%v',
|
416
|
'H' => '%H',
|
417
|
'h' => '%h',
|
418
|
'i' => '%i',
|
419
|
's' => '%s',
|
420
|
'A' => '%p',
|
421
|
'\WW' => 'W%U',
|
422
|
);
|
423
|
$format = strtr($format, $replace);
|
424
|
return "DATE_FORMAT($field, '$format')";
|
425
|
|
426
|
case 'pgsql':
|
427
|
$replace = array(
|
428
|
'Y' => 'YYYY',
|
429
|
'y' => 'YY',
|
430
|
'M' => 'Mon',
|
431
|
'm' => 'MM',
|
432
|
// No format for Numeric representation of a month, without leading
|
433
|
// zeros.
|
434
|
'n' => 'MM',
|
435
|
'F' => 'Month',
|
436
|
'D' => 'Dy',
|
437
|
'd' => 'DD',
|
438
|
'l' => 'Day',
|
439
|
// No format for Day of the month without leading zeros.
|
440
|
'j' => 'DD',
|
441
|
'W' => 'WW',
|
442
|
'H' => 'HH24',
|
443
|
'h' => 'HH12',
|
444
|
'i' => 'MI',
|
445
|
's' => 'SS',
|
446
|
'A' => 'AM',
|
447
|
'\T' => '"T"',
|
448
|
// '\W' => // @todo what should this be?
|
449
|
);
|
450
|
$format = strtr($format, $replace);
|
451
|
return "TO_CHAR($field, '$format')";
|
452
|
|
453
|
case 'sqlite':
|
454
|
$replace = array(
|
455
|
// 4 digit year number.
|
456
|
'Y' => '%Y',
|
457
|
// No format for 2 digit year number.
|
458
|
'y' => '%Y',
|
459
|
// No format for 3 letter month name.
|
460
|
'M' => '%m',
|
461
|
// Month number with leading zeros.
|
462
|
'm' => '%m',
|
463
|
// No format for month number without leading zeros.
|
464
|
'n' => '%m',
|
465
|
// No format for full month name.
|
466
|
'F' => '%m',
|
467
|
// No format for 3 letter day name.
|
468
|
'D' => '%d',
|
469
|
// Day of month number with leading zeros.
|
470
|
'd' => '%d',
|
471
|
// No format for full day name.
|
472
|
'l' => '%d',
|
473
|
// No format for day of month number without leading zeros.
|
474
|
'j' => '%d',
|
475
|
// ISO week number.
|
476
|
'W' => '%W',
|
477
|
// 24 hour hour with leading zeros.
|
478
|
'H' => '%H',
|
479
|
// No format for 12 hour hour with leading zeros.
|
480
|
'h' => '%H',
|
481
|
// Minutes with leading zeros.
|
482
|
'i' => '%M',
|
483
|
// Seconds with leading zeros.
|
484
|
's' => '%S',
|
485
|
// No format for AM/PM.
|
486
|
'A' => '',
|
487
|
// Week number.
|
488
|
'\WW' => '',
|
489
|
);
|
490
|
$format = strtr($format, $replace);
|
491
|
return "strftime('$format', $field)";
|
492
|
|
493
|
case 'sqlsrv':
|
494
|
$replace = array(
|
495
|
// 4 digit year number.
|
496
|
'Y' => "' + CAST(DATEPART(year, $field) AS nvarchar) + '",
|
497
|
// 2 digit year number.
|
498
|
'y' => "' + RIGHT(DATEPART(year, $field), 2) + '",
|
499
|
// 3 letter month name.
|
500
|
'M' => "' + LEFT(DATENAME(month, $field), 3) + '",
|
501
|
// Month number with leading zeros.
|
502
|
'm' => "' + RIGHT('0' + CAST(DATEPART(month, $field) AS nvarchar), 2) + '",
|
503
|
// Month number without leading zeros.
|
504
|
'n' => "' + CAST(DATEPART(month, $field) AS nvarchar) + '",
|
505
|
// Full month name.
|
506
|
'F' => "' + DATENAME(month, $field) + '",
|
507
|
// 3 letter day name.
|
508
|
'D' => "' + LEFT(DATENAME(day, $field), 3) + '",
|
509
|
// Day of month number with leading zeros.
|
510
|
'd' => "' + RIGHT('0' + CAST(DATEPART(day, $field) AS nvarchar), 2) + '",
|
511
|
// Full day name.
|
512
|
'l' => "' + DATENAME(day, $field) + '",
|
513
|
// Day of month number without leading zeros.
|
514
|
'j' => "' + CAST(DATEPART(day, $field) AS nvarchar) + '",
|
515
|
// ISO week number.
|
516
|
'W' => "' + CAST(DATEPART(iso_week, $field) AS nvarchar) + '",
|
517
|
// 24 hour with leading zeros.
|
518
|
'H' => "' + RIGHT('0' + CAST(DATEPART(hour, $field) AS nvarchar), 2) + '",
|
519
|
// 12 hour with leading zeros.
|
520
|
// Conversion to 'mon dd yyyy hh:miAM/PM' format (corresponds to style
|
521
|
// 100 in MSSQL).
|
522
|
// Hour position is fixed, so we use SUBSTRING to extract it.
|
523
|
'h' => "' + RIGHT('0' + LTRIM(SUBSTRING(CONVERT(nvarchar, $field, 100), 13, 2)), 2) + '",
|
524
|
// Minutes with leading zeros.
|
525
|
'i' => "' + RIGHT('0' + CAST(DATEPART(minute, $field) AS nvarchar), 2) + '",
|
526
|
// Seconds with leading zeros.
|
527
|
's' => "' + RIGHT('0' + CAST(DATEPART(second, $field) AS nvarchar), 2) + '",
|
528
|
// AM/PM.
|
529
|
// Conversion to 'mon dd yyyy hh:miAM/PM' format (corresponds to style
|
530
|
// 100 in MSSQL).
|
531
|
'A' => "' + RIGHT(CONVERT(nvarchar, $field, 100), 2) + '",
|
532
|
// Week number.
|
533
|
'\WW' => "' + CAST(DATEPART(week, $field) AS nvarchar) + '",
|
534
|
'\T' => 'T',
|
535
|
// MS SQL uses single quote as escape symbol.
|
536
|
'\'' => '\'\'',
|
537
|
);
|
538
|
$format = strtr($format, $replace);
|
539
|
$format = "'$format'";
|
540
|
return $format;
|
541
|
}
|
542
|
}
|
543
|
|
544
|
/**
|
545
|
* Helper function to create cross-database SQL date extraction.
|
546
|
*
|
547
|
* @param string $extract_type
|
548
|
* The type of value to extract from the date, like 'MONTH'.
|
549
|
* @param string $field
|
550
|
* The real table and field name, like 'tablename.fieldname'.
|
551
|
*
|
552
|
* @return string
|
553
|
* An appropriate SQL string for the db type and field type.
|
554
|
*/
|
555
|
function sql_extract($extract_type, $field) {
|
556
|
// Note there is no space after FROM to avoid db_rewrite problems
|
557
|
// see http://drupal.org/node/79904.
|
558
|
switch (strtoupper($extract_type)) {
|
559
|
case 'DATE':
|
560
|
return $field;
|
561
|
|
562
|
case 'YEAR':
|
563
|
return "EXTRACT(YEAR FROM($field))";
|
564
|
|
565
|
case 'MONTH':
|
566
|
return "EXTRACT(MONTH FROM($field))";
|
567
|
|
568
|
case 'DAY':
|
569
|
return "EXTRACT(DAY FROM($field))";
|
570
|
|
571
|
case 'HOUR':
|
572
|
return "EXTRACT(HOUR FROM($field))";
|
573
|
|
574
|
case 'MINUTE':
|
575
|
return "EXTRACT(MINUTE FROM($field))";
|
576
|
|
577
|
case 'SECOND':
|
578
|
return "EXTRACT(SECOND FROM($field))";
|
579
|
|
580
|
// ISO week number for date.
|
581
|
case 'WEEK':
|
582
|
switch ($this->db_type) {
|
583
|
case 'mysql':
|
584
|
// WEEK using arg 3 in MySQl should return the same value as
|
585
|
// Postgres EXTRACT.
|
586
|
return "WEEK($field, 3)";
|
587
|
|
588
|
case 'pgsql':
|
589
|
return "EXTRACT(WEEK FROM($field))";
|
590
|
}
|
591
|
|
592
|
case 'DOW':
|
593
|
switch ($this->db_type) {
|
594
|
case 'mysql':
|
595
|
// MySQL returns 1 for Sunday through 7 for Saturday, PHP date
|
596
|
// functions and Postgres use 0 for Sunday and 6 for Saturday.
|
597
|
return "INTEGER(DAYOFWEEK($field) - 1)";
|
598
|
|
599
|
case 'pgsql':
|
600
|
return "EXTRACT(DOW FROM($field))";
|
601
|
}
|
602
|
|
603
|
case 'DOY':
|
604
|
switch ($this->db_type) {
|
605
|
case 'mysql':
|
606
|
return "DAYOFYEAR($field)";
|
607
|
|
608
|
case 'pgsql':
|
609
|
return "EXTRACT(DOY FROM($field))";
|
610
|
}
|
611
|
}
|
612
|
}
|
613
|
|
614
|
/**
|
615
|
* Creates a where clause to compare a complete date field to a date value.
|
616
|
*
|
617
|
* @param string $type
|
618
|
* The type of value we're comparing to, could be another field
|
619
|
* or a date value.
|
620
|
* @param string $field
|
621
|
* The db table and field name, like "$table.$field".
|
622
|
* @param string $operator
|
623
|
* The db comparison operator to use, like '='.
|
624
|
* @param int $value
|
625
|
* The value to compare the extracted date part to, could be a field name or
|
626
|
* a date string or NOW().
|
627
|
*
|
628
|
* @return string
|
629
|
* SQL for the where clause for this operation.
|
630
|
*/
|
631
|
function sql_where_date($type, $field, $operator, $value, $adjustment = NULL) {
|
632
|
$type = strtoupper($type);
|
633
|
if (strtoupper($value) == 'NOW') {
|
634
|
$value = $this->sql_field('NOW', $adjustment);
|
635
|
}
|
636
|
elseif ($type == 'FIELD') {
|
637
|
$value = $this->sql_field($value, $adjustment);
|
638
|
}
|
639
|
elseif ($type == 'DATE') {
|
640
|
$date = new DateObject($value, date_default_timezone(), DATE_FORMAT_DATETIME);
|
641
|
if (!empty($adjustment)) {
|
642
|
date_modify($date, $adjustment . ' seconds');
|
643
|
}
|
644
|
// When comparing a field to a date we can avoid doing timezone
|
645
|
// conversion by altering the comparison date to the db timezone. This
|
646
|
// won't work if the timezone is a field instead of a value.
|
647
|
if (empty($this->db_timezone_field) && empty($this->local_timezone_field) && $this->db_timezone_field != $this->local_timezone_field) {
|
648
|
$date->setTimezone(timezone_open($this->db_timezone));
|
649
|
$this->local_timezone = $this->db_timezone;
|
650
|
}
|
651
|
$value = "'" . $date->format(DATE_FORMAT_DATETIME, TRUE) . "'";
|
652
|
}
|
653
|
if ($this->local_timezone != $this->db_timezone) {
|
654
|
$field = $this->sql_field($field);
|
655
|
}
|
656
|
else {
|
657
|
$field = $this->sql_field($field, 0);
|
658
|
}
|
659
|
return "$field $operator $value";
|
660
|
}
|
661
|
|
662
|
/**
|
663
|
* Creates a where clause comparing an extracted date part to an integer.
|
664
|
*
|
665
|
* @param string $part
|
666
|
* The part to extract, YEAR, MONTH, DAY, etc.
|
667
|
* @param string $field
|
668
|
* The db table and field name, like "$table.$field".
|
669
|
* @param string $operator
|
670
|
* The db comparison operator to use, like '=' .
|
671
|
* @param int $value
|
672
|
* The integer value to compare the extracted date part to.
|
673
|
*
|
674
|
* @return string
|
675
|
* SQL for the where clause for this operation.
|
676
|
*/
|
677
|
function sql_where_extract($part, $field, $operator, $value, $adjustment = NULL) {
|
678
|
if (empty($adjustment) && $this->local_timezone != $this->db_timezone) {
|
679
|
$field = $this->sql_field($field);
|
680
|
}
|
681
|
else {
|
682
|
$field = $this->sql_field($field, $adjustment);
|
683
|
}
|
684
|
return $this->sql_extract($part, $field) . " $operator $value";
|
685
|
}
|
686
|
|
687
|
/**
|
688
|
* Create a where clause to compare a formated field to a formated value.
|
689
|
*
|
690
|
* @param string $format
|
691
|
* The format to use on the date and the value when comparing them.
|
692
|
* @param string $field
|
693
|
* The db table and field name, like "$table.$field".
|
694
|
* @param string $operator
|
695
|
* The db comparison operator to use, like '=' .
|
696
|
* @param string $value
|
697
|
* The value to compare the extracted date part to, could be a
|
698
|
* field name or a date string or NOW().
|
699
|
*
|
700
|
* @return string
|
701
|
* SQL for the where clause for this operation.
|
702
|
*/
|
703
|
function sql_where_format($format, $field, $operator, $value, $adjustment = NULL) {
|
704
|
if (empty($adjustment) && $this->local_timezone != $this->db_timezone) {
|
705
|
$field = $this->sql_field($field);
|
706
|
}
|
707
|
else {
|
708
|
$field = $this->sql_field($field, $adjustment);
|
709
|
}
|
710
|
return $this->sql_format($format, $field) . " $operator '$value'";
|
711
|
}
|
712
|
|
713
|
/**
|
714
|
* An array of all date parts,
|
715
|
*
|
716
|
* @param bool $limit
|
717
|
* Limit to an array of allowed parts.
|
718
|
*/
|
719
|
function date_parts($limit = NULL) {
|
720
|
$parts = array(
|
721
|
'year' => t('Year', array(), array('context' => 'datetime')),
|
722
|
'month' => t('Month', array(), array('context' => 'datetime')),
|
723
|
'day' => t('Day', array(), array('context' => 'datetime')),
|
724
|
'hour' => t('Hour', array(), array('context' => 'datetime')),
|
725
|
'minute' => t('Minute', array(), array('context' => 'datetime')),
|
726
|
'second' => t('Second', array(), array('context' => 'datetime')),
|
727
|
);
|
728
|
if (!empty($limit)) {
|
729
|
$last = FALSE;
|
730
|
foreach ($parts as $key => $part) {
|
731
|
if ($last) {
|
732
|
unset($parts[$key]);
|
733
|
}
|
734
|
if ($key == $limit) {
|
735
|
$last = TRUE;
|
736
|
}
|
737
|
}
|
738
|
}
|
739
|
return $parts;
|
740
|
}
|
741
|
|
742
|
/**
|
743
|
* Part information.
|
744
|
*
|
745
|
* @param string $op
|
746
|
* 'min', 'max', 'format', 'sep', 'empty_now', 'empty_min', 'empty_max' .
|
747
|
* Returns all info if empty.
|
748
|
* @param string $part
|
749
|
* 'year', 'month', 'day', 'hour', 'minute', or 'second. Returns info for
|
750
|
* all parts if empty.
|
751
|
*/
|
752
|
function part_info($op = NULL, $part = NULL) {
|
753
|
$info = array();
|
754
|
$info['min'] = array(
|
755
|
'year' => 100,
|
756
|
'month' => 1,
|
757
|
'day' => 1,
|
758
|
'hour' => 0,
|
759
|
'minute' => 0,
|
760
|
'second' => 0,
|
761
|
);
|
762
|
$info['max'] = array(
|
763
|
'year' => 4000,
|
764
|
'month' => 12,
|
765
|
'day' => 31,
|
766
|
'hour' => 23,
|
767
|
'minute' => 59,
|
768
|
'second' => 59,
|
769
|
);
|
770
|
$info['format'] = array(
|
771
|
'year' => 'Y',
|
772
|
'month' => 'm',
|
773
|
'day' => 'd',
|
774
|
'hour' => 'H',
|
775
|
'minute' => 'i',
|
776
|
'second' => 's',
|
777
|
);
|
778
|
$info['sep'] = array(
|
779
|
'year' => '',
|
780
|
'month' => '-',
|
781
|
'day' => '-',
|
782
|
'hour' => ' ',
|
783
|
'minute' => ':',
|
784
|
'second' => ':',
|
785
|
);
|
786
|
$info['empty_now'] = array(
|
787
|
'year' => date('Y'),
|
788
|
'month' => date('m'),
|
789
|
'day' => min('28', date('d')),
|
790
|
'hour' => date('H'),
|
791
|
'minute' => date('i'),
|
792
|
'second' => date('s'),
|
793
|
);
|
794
|
$info['empty_min'] = array(
|
795
|
'year' => '1000',
|
796
|
'month' => '01',
|
797
|
'day' => '01',
|
798
|
'hour' => '00',
|
799
|
'minute' => '00',
|
800
|
'second' => '00',
|
801
|
);
|
802
|
$info['empty_max'] = array(
|
803
|
'year' => '9999',
|
804
|
'month' => '12',
|
805
|
'day' => '31',
|
806
|
'hour' => '23',
|
807
|
'minute' => '59',
|
808
|
'second' => '59',
|
809
|
);
|
810
|
if (!empty($op)) {
|
811
|
if (!empty($part)) {
|
812
|
return $info[$op][$part];
|
813
|
}
|
814
|
else {
|
815
|
return $info[$op];
|
816
|
}
|
817
|
}
|
818
|
return $info;
|
819
|
}
|
820
|
|
821
|
/**
|
822
|
* Create a complete date/time value out of an incomplete array of values.
|
823
|
*
|
824
|
* For example, array('year' => 2008, 'month' => 05) will fill in the day,
|
825
|
* hour, minute and second with the earliest possible values if type = 'min',
|
826
|
* the latest possible values if type = 'max', and the current values if type
|
827
|
* = 'now'.
|
828
|
*/
|
829
|
function complete_date($selected, $type = 'now') {
|
830
|
if (empty($selected)) {
|
831
|
return '';
|
832
|
}
|
833
|
// Special case for weeks.
|
834
|
if (array_key_exists('week', $selected)) {
|
835
|
$dates = date_week_range($selected['week'], $selected['year']);
|
836
|
switch ($type) {
|
837
|
case 'empty_now':
|
838
|
case 'empty_min':
|
839
|
case 'min':
|
840
|
return date_format($dates[0], 'Y-m-d H:i:s');
|
841
|
|
842
|
case 'empty_max':
|
843
|
case 'max':
|
844
|
return date_format($dates[1], 'Y-m-d H:i:s');
|
845
|
|
846
|
default:
|
847
|
return;
|
848
|
}
|
849
|
}
|
850
|
|
851
|
$compare = array_merge($this->part_info('empty_' . $type), $selected);
|
852
|
// If this is a max date, make sure the last day of
|
853
|
// the month is the right one for this date.
|
854
|
if ($type == 'max') {
|
855
|
$compare['day'] = date_days_in_month($compare['year'], $compare['month']);
|
856
|
}
|
857
|
$value = '';
|
858
|
$separators = $this->part_info('sep');
|
859
|
foreach ($this->date_parts() as $key => $name) {
|
860
|
$value .= $separators[$key] . (!empty($selected[$key]) ? $selected[$key] : $compare[$key]);
|
861
|
}
|
862
|
return $value;
|
863
|
}
|
864
|
|
865
|
/**
|
866
|
* Converts a format string into help text, i.e. 'Y-m-d' becomes 'YYYY-MM-DD'.
|
867
|
*
|
868
|
* @param string $format
|
869
|
* A date format string.
|
870
|
*
|
871
|
* @return string
|
872
|
* The conveted help text.
|
873
|
*/
|
874
|
function format_help($format) {
|
875
|
$replace = array(
|
876
|
'Y' => 'YYYY',
|
877
|
'm' => 'MM',
|
878
|
'd' => 'DD',
|
879
|
'H' => 'HH',
|
880
|
'i' => 'MM',
|
881
|
's' => 'SS',
|
882
|
'\T' => 'T',
|
883
|
);
|
884
|
return strtr($format, $replace);
|
885
|
}
|
886
|
|
887
|
/**
|
888
|
* A function to test the validity of various date parts.
|
889
|
*/
|
890
|
function part_is_valid($value, $type) {
|
891
|
if (!preg_match('/^[0-9]*$/', $value)) {
|
892
|
return FALSE;
|
893
|
}
|
894
|
$value = intval($value);
|
895
|
if ($value <= 0) {
|
896
|
return FALSE;
|
897
|
}
|
898
|
switch ($type) {
|
899
|
case 'year':
|
900
|
if ($value < DATE_MIN_YEAR) {
|
901
|
return FALSE;
|
902
|
}
|
903
|
break;
|
904
|
|
905
|
case 'month':
|
906
|
if ($value < 0 || $value > 12) {
|
907
|
return FALSE;
|
908
|
}
|
909
|
break;
|
910
|
|
911
|
case 'day':
|
912
|
if ($value < 0 || $value > 31) {
|
913
|
return FALSE;
|
914
|
}
|
915
|
break;
|
916
|
|
917
|
case 'week':
|
918
|
if ($value < 0 || $value > 53) {
|
919
|
return FALSE;
|
920
|
}
|
921
|
break;
|
922
|
}
|
923
|
return TRUE;
|
924
|
}
|
925
|
|
926
|
/**
|
927
|
* @todo.
|
928
|
*/
|
929
|
function views_formats($granularity, $type = 'sql') {
|
930
|
if (empty($granularity)) {
|
931
|
return DATE_FORMAT_ISO;
|
932
|
}
|
933
|
$formats = array('display', 'sql');
|
934
|
// Start with the site long date format and add seconds to it.
|
935
|
$short = str_replace(':i', ':i:s', variable_get('date_format_short', 'l, F j, Y - H:i'));
|
936
|
switch ($granularity) {
|
937
|
case 'year':
|
938
|
$formats['display'] = 'Y';
|
939
|
$formats['sql'] = 'Y';
|
940
|
break;
|
941
|
|
942
|
case 'month':
|
943
|
$formats['display'] = date_limit_format($short, array('year', 'month'));
|
944
|
$formats['sql'] = 'Y-m';
|
945
|
break;
|
946
|
|
947
|
case 'day':
|
948
|
$args = array('year', 'month', 'day');
|
949
|
$formats['display'] = date_limit_format($short, $args);
|
950
|
$formats['sql'] = 'Y-m-d';
|
951
|
break;
|
952
|
|
953
|
case 'hour':
|
954
|
$args = array('year', 'month', 'day', 'hour');
|
955
|
$formats['display'] = date_limit_format($short, $args);
|
956
|
$formats['sql'] = 'Y-m-d\TH';
|
957
|
break;
|
958
|
|
959
|
case 'minute':
|
960
|
$args = array('year', 'month', 'day', 'hour', 'minute');
|
961
|
$formats['display'] = date_limit_format($short, $args);
|
962
|
$formats['sql'] = 'Y-m-d\TH:i';
|
963
|
break;
|
964
|
|
965
|
case 'second':
|
966
|
$args = array('year', 'month', 'day', 'hour', 'minute', 'second');
|
967
|
$formats['display'] = date_limit_format($short, $args);
|
968
|
$formats['sql'] = 'Y-m-d\TH:i:s';
|
969
|
break;
|
970
|
|
971
|
case 'week':
|
972
|
$formats['display'] = 'F j Y (W)';
|
973
|
$formats['sql'] = 'Y-\WW';
|
974
|
break;
|
975
|
}
|
976
|
return $formats[$type];
|
977
|
}
|
978
|
|
979
|
/**
|
980
|
* @todo.
|
981
|
*/
|
982
|
function granularity_form($granularity) {
|
983
|
$form = array(
|
984
|
'#title' => t('Granularity'),
|
985
|
'#type' => 'radios',
|
986
|
'#default_value' => $granularity,
|
987
|
'#options' => $this->date_parts(),
|
988
|
);
|
989
|
return $form;
|
990
|
}
|
991
|
|
992
|
/**
|
993
|
* Parse date parts from an ISO date argument.
|
994
|
*
|
995
|
* Based on ISO 8601 date duration and time interval standards.
|
996
|
*
|
997
|
* Parses a value like 2006-01-01--2006-01-15, or 2006-W24, or @P1W.
|
998
|
* Separate start and end dates or date and period with a double hyphen (--).
|
999
|
*
|
1000
|
* The 'end' portion of the argument can be eliminated if it is the same as
|
1001
|
* the 'start' portion. Use @ instead of a date to substitute in the current
|
1002
|
* date and time.
|
1003
|
*
|
1004
|
* Use periods (P1H, P1D, P1W, P1M, P1Y) to get next hour/day/week/month/year
|
1005
|
* from now. Use date before P sign to get next hour/day/week/month/year from
|
1006
|
* that date. Use period then date to get a period that ends on the date.
|
1007
|
*
|
1008
|
* @see http://en.wikipedia.org/wiki/ISO_8601#Week_dates
|
1009
|
* @see http://en.wikipedia.org/wiki/ISO_8601#Duration
|
1010
|
*/
|
1011
|
function arg_parts($argument) {
|
1012
|
$values = array();
|
1013
|
// Keep mal-formed arguments from creating errors.
|
1014
|
if (empty($argument) || is_array($argument)) {
|
1015
|
return array('date' => array(), 'period' => array());
|
1016
|
}
|
1017
|
$fromto = explode('--', $argument);
|
1018
|
foreach ($fromto as $arg) {
|
1019
|
$parts = array();
|
1020
|
if ($arg == '@') {
|
1021
|
$date = date_now();
|
1022
|
$parts['date'] = $date->toArray();
|
1023
|
}
|
1024
|
elseif (preg_match('/(\d{4})?-?(W)?(\d{1,2})?-?(\d{1,2})?[T\s]?(\d{1,2})?:?(\d{1,2})?:?(\d{1,2})?/', $arg, $matches)) {
|
1025
|
$date = array();
|
1026
|
if (!empty($matches[1])) {
|
1027
|
$date['year'] = $matches[1];
|
1028
|
}
|
1029
|
if (!empty($matches[3])) {
|
1030
|
if (empty($matches[2])) {
|
1031
|
$date['month'] = $matches[3];
|
1032
|
}
|
1033
|
else {
|
1034
|
$date['week'] = $matches[3];
|
1035
|
}
|
1036
|
}
|
1037
|
if (!empty($matches[4])) {
|
1038
|
$date['day'] = $matches[4];
|
1039
|
}
|
1040
|
if (!empty($matches[5])) {
|
1041
|
$date['hour'] = $matches[5];
|
1042
|
}
|
1043
|
if (!empty($matches[6])) {
|
1044
|
$date['minute'] = $matches[6];
|
1045
|
}
|
1046
|
if (!empty($matches[7])) {
|
1047
|
$date['second'] = $matches[7];
|
1048
|
}
|
1049
|
$parts['date'] = $date;
|
1050
|
}
|
1051
|
if (preg_match('/^P(\d{1,4}[Y])?(\d{1,2}[M])?(\d{1,2}[W])?(\d{1,2}[D])?([T]{0,1})?(\d{1,2}[H])?(\d{1,2}[M])?(\d{1,2}[S])?/', $arg, $matches)) {
|
1052
|
$period = array();
|
1053
|
if (!empty($matches[1])) {
|
1054
|
$period['year'] = str_replace('Y', '', $matches[1]);
|
1055
|
}
|
1056
|
if (!empty($matches[2])) {
|
1057
|
$period['month'] = str_replace('M', '', $matches[2]);
|
1058
|
}
|
1059
|
if (!empty($matches[3])) {
|
1060
|
$period['week'] = str_replace('W', '', $matches[3]);
|
1061
|
}
|
1062
|
if (!empty($matches[4])) {
|
1063
|
$period['day'] = str_replace('D', '', $matches[4]);
|
1064
|
}
|
1065
|
if (!empty($matches[6])) {
|
1066
|
$period['hour'] = str_replace('H', '', $matches[6]);
|
1067
|
}
|
1068
|
if (!empty($matches[7])) {
|
1069
|
$period['minute'] = str_replace('M', '', $matches[7]);
|
1070
|
}
|
1071
|
if (!empty($matches[8])) {
|
1072
|
$period['second'] = str_replace('S', '', $matches[8]);
|
1073
|
}
|
1074
|
$parts['period'] = $period;
|
1075
|
}
|
1076
|
$values[] = $parts;
|
1077
|
}
|
1078
|
return $values;
|
1079
|
}
|
1080
|
|
1081
|
/**
|
1082
|
* Convert strings like '+1 day' to the ISO equivalent, like 'P1D' .
|
1083
|
*/
|
1084
|
function arg_replace($arg) {
|
1085
|
if (!preg_match('/([+|-])\s?([0-9]{1,32})\s?([day(s)?|week(s)?|month(s)?|year(s)?|hour(s)?|minute(s)?|second(s)?]{1,10})/', $arg, $results)) {
|
1086
|
return str_replace('now', '@', $arg);
|
1087
|
}
|
1088
|
$direction = $results[1];
|
1089
|
$count = $results[2];
|
1090
|
$item = $results[3];
|
1091
|
$replace = array(
|
1092
|
'now' => '@',
|
1093
|
'+' => 'P',
|
1094
|
'-' => 'P-',
|
1095
|
'years' => 'Y',
|
1096
|
'year' => 'Y',
|
1097
|
'months' => 'M',
|
1098
|
'month' => 'M',
|
1099
|
'weeks' => 'W',
|
1100
|
'week' => 'W',
|
1101
|
'days' => 'D',
|
1102
|
'day' => 'D',
|
1103
|
'hours' => 'H',
|
1104
|
'hour' => 'H',
|
1105
|
'minutes' => 'M',
|
1106
|
'minute' => 'M',
|
1107
|
'seconds' => 'S',
|
1108
|
'second' => 'S',
|
1109
|
' ' => '',
|
1110
|
' ' => '',
|
1111
|
);
|
1112
|
$args = array('hours', 'hour', 'minutes', 'minute', 'seconds', 'second');
|
1113
|
if (in_array($item, $args)) {
|
1114
|
$prefix = 'T';
|
1115
|
}
|
1116
|
else {
|
1117
|
$prefix = '';
|
1118
|
}
|
1119
|
$return = $prefix;
|
1120
|
$return .= strtr($direction, $replace);
|
1121
|
$return .= $count;
|
1122
|
$return .= strtr($item, $replace);
|
1123
|
|
1124
|
return $return;
|
1125
|
}
|
1126
|
|
1127
|
/**
|
1128
|
* Granularity arguments handler.
|
1129
|
*
|
1130
|
* Use the parsed values from the ISO argument to determine the granularity
|
1131
|
* of this period.
|
1132
|
*/
|
1133
|
function arg_granularity($arg) {
|
1134
|
$granularity = '';
|
1135
|
$parts = $this->arg_parts($arg);
|
1136
|
$date = !empty($parts[0]['date']) ? $parts[0]['date'] : (!empty($parts[1]['date']) ? $parts[1]['date'] : array());
|
1137
|
foreach ($date as $key => $part) {
|
1138
|
$granularity = $key;
|
1139
|
}
|
1140
|
return $granularity;
|
1141
|
}
|
1142
|
|
1143
|
/**
|
1144
|
* Determine the min and max date for this period.
|
1145
|
*
|
1146
|
* Uses the parsed values from the ISO argument.
|
1147
|
*/
|
1148
|
function arg_range($arg) {
|
1149
|
// Parse the argument to get its parts.
|
1150
|
$parts = $this->arg_parts($arg);
|
1151
|
|
1152
|
// Build a range from a period-only argument (assumes the min date is now.)
|
1153
|
if (empty($parts[0]['date']) && !empty($parts[0]['period']) && (empty($parts[1]))) {
|
1154
|
$min_date = date_now();
|
1155
|
$max_date = clone $min_date;
|
1156
|
foreach ($parts[0]['period'] as $part => $value) {
|
1157
|
date_modify($max_date, "+$value $part");
|
1158
|
}
|
1159
|
date_modify($max_date, '-1 second');
|
1160
|
return array($min_date, $max_date);
|
1161
|
}
|
1162
|
// Build a range from a period to period argument.
|
1163
|
if (empty($parts[0]['date']) && !empty($parts[0]['period']) && !empty($parts[1]['period'])) {
|
1164
|
$min_date = date_now();
|
1165
|
$max_date = clone $min_date;
|
1166
|
foreach ($parts[0]['period'] as $part => $value) {
|
1167
|
date_modify($min_date, "+$value $part");
|
1168
|
}
|
1169
|
date_modify($min_date, '-1 second');
|
1170
|
foreach ($parts[1]['period'] as $part => $value) {
|
1171
|
date_modify($max_date, "+$value $part");
|
1172
|
}
|
1173
|
date_modify($max_date, '-1 second');
|
1174
|
return array($min_date, $max_date);
|
1175
|
}
|
1176
|
if (!empty($parts[0]['date'])) {
|
1177
|
$value = $this->complete_date($parts[0]['date'], 'min');
|
1178
|
$min_date = new DateObject($value, date_default_timezone(), DATE_FORMAT_DATETIME);
|
1179
|
// Build a range from a single date-only argument.
|
1180
|
if (empty($parts[1]) || (empty($parts[1]['date']) && empty($parts[1]['period']))) {
|
1181
|
$value = $this->complete_date($parts[0]['date'], 'max');
|
1182
|
$max_date = new DateObject($value, date_default_timezone(), DATE_FORMAT_DATETIME);
|
1183
|
return array($min_date, $max_date);
|
1184
|
}
|
1185
|
// Build a range from start date + period.
|
1186
|
elseif (!empty($parts[1]['period'])) {
|
1187
|
foreach ($parts[1]['period'] as $part => $value) {
|
1188
|
$max_date = clone $min_date;
|
1189
|
date_modify($max_date, "+$value $part");
|
1190
|
}
|
1191
|
date_modify($max_date, '-1 second');
|
1192
|
return array($min_date, $max_date);
|
1193
|
}
|
1194
|
}
|
1195
|
// Build a range from start date and end date.
|
1196
|
if (!empty($parts[1]['date'])) {
|
1197
|
$value = $this->complete_date($parts[1]['date'], 'max');
|
1198
|
$max_date = new DateObject($value, date_default_timezone(), DATE_FORMAT_DATETIME);
|
1199
|
if (isset($min_date)) {
|
1200
|
return array($min_date, $max_date);
|
1201
|
}
|
1202
|
}
|
1203
|
// Build a range from period + end date.
|
1204
|
if (!empty($parts[0]['period'])) {
|
1205
|
$min_date = date_now();
|
1206
|
foreach ($parts[0]['period'] as $part => $value) {
|
1207
|
date_modify($min_date, "$value $part");
|
1208
|
}
|
1209
|
return array($min_date, $max_date);
|
1210
|
}
|
1211
|
// Intercept invalid info and fall back to the current date.
|
1212
|
$now = date_now();
|
1213
|
return array($now, $now);
|
1214
|
}
|
1215
|
}
|