initial commit of validation classes.

system/validation/rules/size_of.php

@@ -0,0 +1,160 @@
+<?php namespace System\Validation\Rules;
+
+use System\Str;
+use System\Validation\Rule;
+
+class Size_Of extends Rule {
+
+	/**
+	 * The exact size the attribute must be.
+	 *
+	 * @var int
+	 */
+	public $length;
+
+	/**
+	 * The maximum size of the attribute.
+	 *
+	 * @var int
+	 */
+	public $maximum;
+
+	/**
+	 * The minimum size of the attribute.
+	 *
+	 * @var int
+	 */
+	public $minimum;
+
+	/**
+	 * Evaluate the validity of an attribute.
+	 *
+	 * @param  string  $attribute
+	 * @param  array   $attributes
+	 * @return void
+	 */
+	public function check($attribute, $attributes)
+	{
+		if ( ! array_key_exists($attribute, $attributes))
+		{
+			return true;
+		}
+
+		if (is_numeric($attributes[$attribute]))
+		{
+			return $this->check_number($attribute, $attributes);
+		}
+		else
+		{
+			return $this->check_string($attribute, $attributes);
+		}
+	}
+
+	/**
+	 * Evaluate the validity of a numeric attribute.
+	 *
+	 * @param  string  $attribute
+	 * @param  array   $attributes
+	 * @return void
+	 */
+	private function check_number($attribute, $attributes)
+	{
+		if ( ! is_null($this->length) and $attributes[$attribute] !== $this->length)
+		{
+			return false;
+		}
+
+		if ( ! is_null($this->maximum) and $attributes[$attribute] > $this->maximum)
+		{
+			return false;
+		}
+
+		if ( ! is_null($this->minimum and $attributes[$attribute] < $this->minimum))
+		{
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Evaluate the validity of a string attribute.
+	 *
+	 * @param  string  $attribute
+	 * @param  array   $attributes
+	 * @return void
+	 */
+	public function check_string($attribute, $attributes)
+	{
+		$value = trim((string) $attributes[$attribute]);
+
+		if ( ! is_null($this->length) and Str::length($value) !== $this->length)
+		{
+			return false;
+		}
+
+		if ( ! is_null($this->maximum) and Str::length($value) > $this->maximum)
+		{
+			return false;
+		}
+
+		if ( ! is_null($this->minimum) and Str::length($value) < $this->minimum)
+		{
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Set the exact size the attribute must be.
+	 *
+	 * @param  int  $length
+	 * @return Size_Of
+	 */
+	public function is($length)
+	{
+		$this->length = $length;
+		return $this;
+	}
+
+	/**
+	 * Set the minimum and maximize size of the attribute.
+	 *
+	 * @param  int  $minimum
+	 * @param  int  $maximum
+	 * @return Size_Of
+	 */
+	public function between($minimum, $maximum)
+	{
+		$this->minimum = $minimum;
+		$this->maximum = $maximum;
+
+		return $this;
+	}
+
+	/**
+	 * Set the minimum size the attribute.
+	 *
+	 * @param  int  $minimum
+	 * @return Size_Of
+	 */
+	public function at_least($minimum)
+	{
+		$this->minimum = $minimum;
+		return $this;
+	}
+
+	/**
+	 * Set the maximum size the attribute.
+	 *
+	 * @param  int  $maximum
+	 * @return Size_Of
+	 */
+	public function less_than($maximum)
+	{
+		$this->maximum = $maximum;
+		return $this;
+	}
+
+}