fix issue with periods in directory names

classes/ComicPressMediaHandling.inc

@@ -58,6 +58,11 @@ class ComicPressMediaHandling {
 		return $result;
 	}
 
+	function _resolve_regex_path($input) {
+		$input = str_replace('\.', '.', $input);
+		return $input;
+	}
+
 	// @codeCoverageIgnoreStart
 	function _abspath() {
 		return realpath(ABSPATH);
@@ -85,7 +90,7 @@ class ComicPressMediaHandling {
 	}
 
 	function _read_directory($pattern) {
-		$dirname = dirname($pattern);
+		$dirname = $this->_resolve_regex_path(dirname($pattern));
 		$results = false;
 		if (is_dir($dirname)) {
 			$results = array();

test/ComicPressMediaHandlingTest.php

@@ -141,6 +141,20 @@ class ComicPressMediaHandlingTest extends PHPUnit_Framework_TestCase {
 	 	$this->assertEquals($expected_results, $this->cpmh->_read_directory($pattern));
 	}
 
+	function providerTestResolveRegexPath() {
+		return array(
+			array('test', 'test'),
+			array('te\.st', 'te.st')
+		);
+	}
+
+	/**
+	 * @dataProvider providerTestResolveRegexPath
+	 */
+	function testResolveRegexPath($input, $expected_output) {
+	  $this->assertEquals($expected_output, $this->cpmh->_resolve_regex_path($input));
+	}
+
 	function providerTestPreHandleComicPathResults() {
 		return array(
 			array('', '', false),