Exclude some dirs and files from repository auto-generated ZIP archives (#113)

People that install this library via composer don't need the test stuff, they just need the library itself.
This PR removes the development directories and files from the repository auto-generated ZIP archives.
Since these development files/directories will still be available via `git clone`, Travis is happy, developers are happy, and so are end-users (they won't have unneeded stuff in production machines).

.gitattributes

@@ -0,0 +1,4 @@
+/Tests export-ignore
+/documentation export-ignore
+/.* export-ignore
+/phpunit.xml.dist

EmailValidator/EmailValidator.php

@@ -58,7 +58,7 @@ class EmailValidator
     }
 
     /**
-     * @return string
+     * @return InvalidEmail
      */
     public function getError()
     {

EmailValidator/Validation/DNSCheckValidation.php

@@ -3,16 +3,12 @@
 namespace Egulias\EmailValidator\Validation;
 
 use Egulias\EmailValidator\EmailLexer;
+use Egulias\EmailValidator\Exception\InvalidEmail;
 use Egulias\EmailValidator\Warning\NoDNSMXRecord;
 use Egulias\EmailValidator\Exception\NoDNSRecord;
 
 class DNSCheckValidation implements EmailValidation
 {
-    /**
-     * @var EmailParser
-     */
-    private $parser;
-
     /**
      * @var array
      */
@@ -27,10 +23,10 @@ class DNSCheckValidation implements EmailValidation
     {
         // use the input to check DNS if we cannot extract something similar to a domain
         $host = $email;
+
         // Arguable pattern to extract the domain. Not aiming to validate the domain nor the email
-        $pattern = "/^[a-z'0-9]+([._-][a-z'0-9]+)*@([a-z0-9]+([._-][a-z0-9]+)+)+$/";
-        if (preg_match($pattern, $email, $result)) {
-            $host = $this->extractHost($result);
+        if (false !== $lastAtPos = strrpos($email, '@')) {
+            $host = substr($email, $lastAtPos + 1);
         }
 
         return $this->checkDNS($host);
@@ -46,16 +42,6 @@ class DNSCheckValidation implements EmailValidation
         return $this->warnings;
     }
 
-    private function extractHost(array $result)
-    {
-        foreach ($result as $match) {
-            $onlyDomainPattern = "/^([a-z0-9]+([._-][a-z0-9]+))+$/";
-            if (preg_match($onlyDomainPattern, $match, $domainResult)) {
-                return $domainResult[0];
-            }
-        }
-    }
-
     protected function checkDNS($host)
     {
         $Aresult = true;
@@ -63,7 +49,7 @@ class DNSCheckValidation implements EmailValidation
         
         if (!$MXresult) {
             $this->warnings[NoDNSMXRecord::CODE] = new NoDNSMXRecord();
-            $Aresult = checkdnsrr($host, 'A');
+            $Aresult = checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA');
             if (!$Aresult) {
                 $this->error = new NoDNSRecord();
             }

EmailValidator/Validation/EmailValidation.php

@@ -3,6 +3,7 @@
 namespace Egulias\EmailValidator\Validation;
 
 use Egulias\EmailValidator\EmailLexer;
+use Egulias\EmailValidator\Exception\InvalidEmail;
 
 interface EmailValidation
 {

EmailValidator/Validation/SpoofCheckValidation.php

@@ -3,6 +3,7 @@
 namespace Egulias\EmailValidator\Validation;
 
 use Egulias\EmailValidator\EmailLexer;
+use Egulias\EmailValidator\Exception\InvalidEmail;
 use Egulias\EmailValidator\Validation\Error\SpoofEmail;
 use \Spoofchecker;
 

README.md

@@ -32,10 +32,10 @@ $validator->isValid("example@example.com", new RFCValidation()) //true
 2. [NoWarningsRFCValidation](https://github.com/egulias/EmailValidator/blob/master/EmailValidator/Validation/NoRFCWarningsValidation.php)
 3. [DNSCheckValidation](https://github.com/egulias/EmailValidator/blob/master/EmailValidator/Validation/DNSCheckValidation.php)
 4. [SpoofCheckValidation](https://github.com/egulias/EmailValidator/blob/master/EmailValidator/Validation/SpoofCheckValidation.php)
-5. [MultipleValidationsWithAnd](https://github.com/egulias/EmailValidator/blob/master/EmailValidator/Validation/MultipleValidationWithAnd.php)
+5. [MultipleValidationWithAnd](https://github.com/egulias/EmailValidator/blob/master/EmailValidator/Validation/MultipleValidationWithAnd.php)
 6. [Your own validation](#how-to-extend)
 
-`MultipleValidationsWithAnd`
+`MultipleValidationWithAnd`
 
 It is a validation that operates over other validations performing a logical and (&&) over the result of each validation.
 
@@ -43,9 +43,12 @@ It is a validation that operates over other validations performing a logical and
 <?php
 
 use Egulias\EmailValidator\EmailValidator;
+use Egulias\EmailValidator\Validation\DNSCheckValidation;
+use Egulias\EmailValidator\Validation\MultipleValidationWithAnd;
+use Egulias\EmailValidator\Validation\RFCValidation;
 
 $validator = new EmailValidator();
-$multipleValidations = new MultipleValidationsWithAnd([
+$multipleValidations = new MultipleValidationWithAnd([
     new RFCValidation(),
     new DNSCheckValidation()
 ])

Tests/EmailValidator/Validation/DNSCheckValidationTest.php

@@ -9,10 +9,30 @@ use Egulias\EmailValidator\Warning\NoDNSMXRecord;
 
 class DNSCheckValidationTest extends \PHPUnit_Framework_TestCase
 {
-    public function testValidDNS()
+    public function validEmailsProvider()
+    {
+        return [
+            // dot-atom
+            ['Abc@example.com'],
+            ['ABC@EXAMPLE.COM'],
+            ['Abc.123@example.com'],
+            ['user+mailbox/department=shipping@example.com'],
+            ['!#$%&\'*+-/=?^_`.{|}~@example.com'],
+
+            // quoted string
+            ['"Abc@def"@example.com'],
+            ['"Fred\ Bloggs"@example.com'],
+            ['"Joe.\\Blow"@example.com'],
+        ];
+    }
+
+    /**
+     * @dataProvider validEmailsProvider
+     */
+    public function testValidDNS($validEmail)
     {
         $validation = new DNSCheckValidation();
-        $this->assertTrue($validation->isValid("example@example.com", new EmailLexer()));
+        $this->assertTrue($validation->isValid($validEmail, new EmailLexer()));
     }
     
     public function testInvalidDNS()