src/DateIterator.php

@@ -0,0 +1,218 @@
+<?php
+
+namespace Twister;
+
+use \DateTime;					//	http://php.net/manual/en/class.datetime.php
+use \DateInterval;				//	http://php.net/manual/en/class.dateinterval.php
+use \DateTimeZone;				//	http://php.net/manual/en/class.datetimezone.php
+use \DatePeriod;				//	http://php.net/manual/en/class.dateperiod.php
+
+use \Iterator;					//	http://php.net/manual/en/class.iteratoraggregate.php			Interface to create an external Iterator.
+
+class DateIterator implements Iterator
+{
+	private $start		= null;
+	private $current	= null;
+	private $interval	= null;
+
+	public static $utc	= null;
+	public static $p1d	= null;
+
+	public function __construct($date, $interval_spec = null)
+	{
+		$this->start	= (is_string($date) ? new \DateTime($date, self::$utc) : $date);
+		$this->current	= clone $this->start;
+		$this->interval	= $interval_spec === null ? self::$p1d : (is_string($interval_spec) ? new \DateInterval($interval_spec) : $interval_spec);
+	}
+
+	/**
+	 * Returns the $current value as MySQL Date format ('YYYY-MM-DD')
+	 *
+	 * @return string The $current property
+	 */
+	public function __toString()
+	{
+		return $this->current->format('Y-m-d');
+	}
+
+	public function rewind()
+	{
+		$this->current = clone $this->start;
+	}
+
+	public function current()
+	{
+		return $this->current->format('Y-m-d');
+	}
+
+	public function key()
+	{
+		return $this->start->diff($this->current)->format('%r%a');
+	}
+
+	public function next()
+	{
+		$this->current->add($this->interval);
+		return $this;
+	}
+
+	public function prev()
+	{
+		$this->current->sub($this->interval);
+		return $this;
+	}
+
+	public function valid()
+	{
+		return true;	// basically allows the DateIterator to be infinite
+	}
+
+	//	Sets the `current` value!
+	public function toDate($date)
+	{
+		$this->current = (is_string($date) ? new \DateTime($date, self::$utc) : $date);
+	}
+
+	public function getInterval()
+	{
+		return $this->interval;
+	}
+
+	public function setInterval($interval_spec = 'P1D')
+	{
+		$this->interval = new \DateInterval($interval_spec);
+		return $this;
+	}
+
+	/**
+	 *	Wrapper around DateTime::modify()
+	 *
+	 *	`Alter the timestamp of a DateTime object by incrementing or decrementing in a format accepted by strtotime().`
+	 *
+	 *	@link	http://php.net/manual/en/datetime.modify.php
+	 *	@link	http://php.net/manual/en/function.strtotime.php
+	 *
+	 *	$return $this
+	 */
+	public function modify($modify = '+1 day')
+	{
+		$this->current->modify($modify);
+		return $this;
+	}
+
+	/**
+	 *	Wrapper around \DateTime->add()
+	 *
+	 *	@link http://php.net/manual/en/datetime.add.php
+	 *	@link http://php.net/manual/en/class.dateinterval.php
+	 *	@link http://php.net/manual/en/dateinterval.construct.php
+	 *	@link https://en.wikipedia.org/wiki/Iso8601#Durations
+	 *
+	 *	Simple examples:
+	 *		Two days is P2D.
+	 *		Two seconds is PT2S.
+	 *		Six years and five minutes is P6YT5M.
+	 *
+	 *	Formats are based on the » ISO 8601 duration specification. 
+	 *
+	 *	@param  string $interval_spec The character encoding
+	 *	@return new Twister\Date isntance or false on failure
+	 */
+	public function add($interval_spec = 'P1D')
+	{
+		$this->str = (new \DateTime($this->str, new \DateTimeZone('UTC')))->add(new \DateInterval($interval_spec))->format('Y-m-d');
+		return $this;
+	}
+
+	/**
+	 *	Wrapper around \DateTime->sub()
+	 *
+	 *	@link http://php.net/manual/en/datetime.sub.php
+	 *	@link http://php.net/manual/en/class.dateinterval.php
+	 *	@link http://php.net/manual/en/dateinterval.construct.php
+	 *	@link https://en.wikipedia.org/wiki/Iso8601#Durations
+	 *
+	 *	Simple examples:
+	 *		Two days is P2D.
+	 *		Two seconds is PT2S.
+	 *		Six years and five minutes is P6YT5M.
+	 *
+	 *	Formats are based on the » ISO 8601 duration specification. 
+	 *
+	 *	@param  string $interval_spec The character encoding
+	 *	@return new Twister\Date isntance or false on failure
+	 */
+	public function sub($interval_spec = 'P1D')
+	{
+		$this->str = (new \DateTime($this->str, new \DateTimeZone('UTC')))->add(new \DateInterval($interval_spec))->format('Y-m-d');
+		return $this;
+	}
+
+	function __get($name)
+	{
+		switch ($name)
+		{
+			case 'year':	return $this->current->format('Y');
+			case 'month':	return $this->current->format('m');
+			case 'day':		return $this->current->format('d');
+
+			//	http://php.net/manual/en/function.date.php
+			case 'd':		return $this->current->format('d');				//	Day of the month, 2 digits with leading zeros									eg. 01 to 31
+			case 'D':		return $this->current->format('D');				//	A textual representation of a day, three letters								eg. Mon through Sun
+			case 'j':		return $this->current->format('j');				//	Day of the month without leading zeros											eg. 1 to 31
+			case 'l':		return $this->current->format('l');				//	A full textual representation of the day of the week							eg. Sunday through Saturday
+			case 'N':		return $this->current->format('N');				//	ISO-8601 numeric representation of the day of the week (added in PHP 5.1.0		eg. 1 (for Monday) through 7 (for Sunday)
+			case 'S':		return $this->current->format('S');				//	English ordinal suffix for the day of the month, 2 characters					eg. st, nd, rd or th. Works well with j
+			case 'w':		return $this->current->format('w');				//	Numeric representation of the day of the week									eg. 0 (for Sunday) through 6 (for Saturday)
+			case 'z':		return $this->current->format('z');				//	The day of the year (starting from 0)											eg. 0 through 365
+			case 'W':		return $this->current->format('W');				//	ISO-8601 week number of year, weeks starting on Monday							eg. Example: 42 (the 42nd week in the year)
+			case 'F':		return $this->current->format('F');				//	A full textual representation of a month, such as January or March				eg. January through December
+			case 'm':		return $this->current->format('m');				//	Numeric representation of a month, with leading zeros							eg. 01 through 12
+			case 'M':		return $this->current->format('M');				//	A short textual representation of a month, three letters						eg. Jan through Dec
+			case 'n':		return $this->current->format('n');				//	Numeric representation of a month, without leading zeros						eg. 1 through 12
+			case 't':		return $this->current->format('t');				//	Number of days in the given month												eg. 28 through 31
+			case 'L':		return $this->current->format('L');				//	Whether it's a leap year														eg. 1 if it is a leap year, 0 otherwise.
+			case 'o':		return $this->current->format('o');				//	ISO-8601 week-numbering year. This has the same value as Y, except that if the ISO week number (W) belongs to the previous or next year, that year is used instead. (added in PHP 5.1.0)			eg. Examples: 1999 or 2003
+			case 'Y':		return $this->current->format('Y');				//	A full numeric representation of a year, 4 digits								eg. Examples: 1999 or 2003
+			case 'y':		return $this->current->format('y');				//	A two digit representation of a year											eg. Examples: 99 or 03
+
+			//	`time` related formats are missing!
+
+			case 'U':		return $this->current->format('U');				//	Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)						eg. See also time()
+
+			case 'quarter':	return $this->current->format('m') / 4 + 1;
+
+			default:
+
+				if ( ! ctype_lower($name))
+					$name = strtolower($name);
+
+				if (self::$hashAlgos === null)
+					self::$hashAlgos = array_flip(hash_algos());	//	set the hash algorithms as keys for faster lookup with isset() instead of in_array()!
+
+				if (isset(self::$hashAlgos[$name]))					//	we converted the hash name to lowercase above so we can safely support this: $this->Sha256
+					return hash($name, $this->str);
+
+				//--- Start of alias and mixed-case properties ---//
+
+				switch ($name)
+				{
+					//	possible mixed-case variants `normalized` to lowercase. eg. `Scheme` => `scheme`
+					case 'length':		return \strlen($this->str);
+				}
+		}
+	}
+
+	function __set($name, $value)
+	{
+		switch ($name)
+		{
+			case 'year':	return $this->encoding	=	mb_internal_encoding();
+			case 'month':	return strlen($this->_str);
+			case 'day':		return strlen($this->_str);
+		}
+	}
+
+}
+
+DateIterator::$utc = new \DateTimeZone('UTC');

src/DatePeriod.php

@@ -3,43 +3,32 @@
 namespace Twister;
 
 use \DateTime;					//	http://php.net/manual/en/class.datetime.php
+use \DateInterval;				//	http://php.net/manual/en/class.dateinterval.php
+use \DateTimeZone;				//	http://php.net/manual/en/class.datetimezone.php
+use \DatePeriod;				//	http://php.net/manual/en/class.dateperiod.php
 
-use IteratorAggregate;			//	http://php.net/manual/en/class.iteratoraggregate.php			Interface to create an external Iterator.
+echo 'here 1';
 
-class DatePeriod extends DatePeriod implements IteratorAggregate
+class DatePeriod extends \DatePeriod
 {
-	public function __construct($date)
-	{
-		
-	}
+	public static $utc	= null;
+	public static $p1d	= null;
 
-	public function __construct()
+	public function __construct($start, $interval_spec = null, $end = '9999-12-31')
 	{
-		$this->position = 0;
-	}
-
-	public function rewind()
-	{
-		$this->position = 0;
-	}
-
-	public function current()
-	{
-		return $this->array[$this->position];
-	}
-
-	public function key()
-	{
-		return $this->position;
+		parent::__construct(	is_string($start) ? new \DateTime($start, self::$utc) : $start,
+								$interval_spec === null ? self::$p1d : (is_string($interval_spec) ? new \DateInterval($interval_spec) : $interval_spec),
+								is_string($end) ? new \DateTime($end, self::$utc) : $end
+							);
 	}
 
 	public function next()
 	{
-		++$this->position;
-	}
-
-	public function valid()
-	{
-		return isset($this->array[$this->position]);
+trigger_error('HERE');
+		$this->current->add($this->interval);
+		return $this;
 	}
 }
+
+DatePeriod::$utc = new \DateTimeZone('UTC');
+DatePeriod::$p1d = new \DateInterval('P1D');

src/DateTime.php

@@ -2309,3 +2309,5 @@ class DateTime implements Countable, IteratorAggregate, ArrayAccess
 	}
 
 }
+
+DateTime::$utc = new \DateTimeZone('UTC');

src/Str.php

@@ -5,6 +5,7 @@ use ArrayAccess;				//	http://php.net/manual/en/class.arrayaccess.php					Interf
 use ArrayIterator;				//	http://php.net/manual/en/class.arrayiterator.php				This iterator allows to unset and modify values and keys while iterating over Arrays and Objects.
 use Countable;					//	http://php.net/manual/en/class.countable.php					Classes implementing Countable can be used with the count() function.
 use IteratorAggregate;			//	http://php.net/manual/en/class.iteratoraggregate.php			Interface to create an external Iterator.
+use Iterator;					//	http://php.net/manual/en/class.iterator.php						Interface for external iterators or objects that can be iterated themselves internally. 
 use Exception;					//	http://php.net/manual/en/class.exception.php					Exception is the base class for all Exceptions in PHP 5, and the base class for all user exceptions in PHP 7.
 use InvalidArgumentException;	//	http://php.net/manual/en/class.invalidargumentexception.php		Exception thrown if an argument is not of the expected type.
 use OutOfBoundsException;		//	http://php.net/manual/en/class.outofboundsexception.php			Exception thrown if a value is not a valid key. This represents errors that cannot be detected at compile time.