Added verification checking.

Files sent for verification checking using the ::check($file, "ext") call
will be matched only against cases that are ->leadEXT. This reduces the
number of case checks that need to be ran, allows specificity, and can
be used to prioritize certain container formats that ffprobe can put the
file in.

Author: jaw-sh

src/FileSleuth.php

@@ -25,7 +25,7 @@ class FileSleuth
 	/**
 	 * Instantiates the model.
 	 *
-	 * @param  $file  string  Optional parameter to automatically run a check.
+	 * @param  string  $file  Optional parameter to automatically run a check.
 	 * @return null|boolean
 	 */
 	public function __construct($file = null)
@@ -39,17 +39,23 @@ public function __construct($file = null)
 	/**
 	 * Runs the file against all dectives.
 	 *
-	 * @param  $file  string  Optional parameter to automatically run a check.
+	 * @param  string  $file  Optional parameter to automatically run a check.
+	 * @param  string|null  $verify  Extension to verify against. Checks all possible if unset.
 	 * @return null|boolean
 	 */
-	public function check($file)
+	public function check($file, $verify = null)
 	{
+		if (is_string($verify))
+		{
+			$verify = "lead" . strtoupper($verify);
+		}
+		
 		$case = null;
 
 		foreach ($this->detectives as $detectiveClass)
 		{
 			$detective = new $detectiveClass();
-			$case      = $detective->check($file);
+			$case      = $detective->check($file, $verify);
 
 			if ($case)
 			{

src/Traits/DetectiveTrait.php

@@ -57,7 +57,7 @@ protected function caseClosedOrFail()
 	 * Check the the file against our leads.
 	 *
 	 * @param  mixed  $file  File to check.
-	 * @param  string|null  Mime type to verify against. Checks all possible if unset.
+	 * @param  string|null  $verify  Extension to verify against. Checks all possible if unset.
 	 * @return boolean  True if we solved the case, false if not.
 	 */
 	public function check($file, $verify = null)
@@ -66,9 +66,18 @@ public function check($file, $verify = null)
 		{
 			$leads = $this->leads();
 
-			foreach ($leads as $lead)
+			if (!is_null($verify))
 			{
-				if (is_null($verify) || $lead === $verify)
+				if (isset($leads[$verify]))
+				{
+					return $this->checkLead($leads[$verify]);
+				}
+				
+				return false;
+			}
+			else
+			{
+				foreach ($leads as $lead)
 				{
 					$results = $this->checkLead($lead);