Add isUrl() pattern expander

README.md

@@ -52,6 +52,7 @@ $match = $matcher->match("lorem ipsum dolor", "@string@")
 * ``contains($string, $ignoreCase = false)``
 * ``isDateTime()``
 * ``isEmail()``
+* ``isUrl()``
 * ``notEmpty()``
 * ``lowerThan($boundry)``
 * ``greaterThan($boundry)``

composer.json

@@ -15,6 +15,7 @@
     ],
     "require": {
         "php": ">=5.3.0",
+        "ext-filter": "*",
         "coduo/php-to-string": "~1.0",
         "symfony/property-access": "~2.3",
         "symfony/expression-language": "~2.4",

src/Coduo/PHPMatcher/Matcher/Pattern/Expander/IsUrl.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Coduo\PHPMatcher\Matcher\Pattern\Expander;
+
+use Coduo\PHPMatcher\Matcher\Pattern\PatternExpander;
+use Coduo\ToString\String;
+
+class IsUrl implements PatternExpander
+{
+    /**
+     * @var null|string
+     */
+    private $error;
+
+    /**
+     * @param string $value
+     * @return boolean
+     */
+    public function match($value)
+    {
+        if (false === is_string($value)) {
+            $this->error = sprintf("IsUrl expander require \"string\", got \"%s\".", new String($value));
+            return false;
+        }
+
+        if (false === $this->matchValue($value)) {
+            $this->error = sprintf("string \"%s\" is not a valid URL.", $value);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getError()
+    {
+        return $this->error;
+    }
+
+    /**
+     * @param string $value
+     * @return bool
+     */
+    protected function matchValue($value)
+    {
+        try {
+            return false !== filter_var($value, FILTER_VALIDATE_URL);
+        } catch (\Exception $e) {
+            return false;
+        }
+    }
+}

src/Coduo/PHPMatcher/Parser/ExpanderInitializer.php

@@ -20,6 +20,7 @@ class ExpanderInitializer
         "notEmpty" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\NotEmpty",
         "isDateTime" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\IsDateTime",
         "isEmail" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\IsEmail",
+        "isUrl" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\IsUrl",
         "lowerThan" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\LowerThan",
         "greaterThan" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\GreaterThan",
         "inArray" => "Coduo\\PHPMatcher\\Matcher\\Pattern\\Expander\\InArray",

tests/Coduo/PHPMatcher/Matcher/Pattern/Expander/IsUrlTest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Coduo\PHPMatcher\Tests\Matcher\Pattern\Expander;
+
+use Coduo\PHPMatcher\Matcher;
+use Coduo\PHPMatcher\Matcher\Pattern\Expander\IsUrl;
+
+class IsUrlTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider examplesUrlsProvider
+     */
+    public function test_urls($url, $expectedResult)
+    {
+        $expander = new IsUrl();
+        $this->assertEquals($expectedResult, $expander->match($url));
+    }
+
+    public static function examplesUrlsProvider()
+    {
+        return array(
+            array("http://example.com/test.html", true),
+            array("https://example.com/test.html", true),
+            array("https://example.com/user/{id}/", true),
+            array("mailto:[email protected]", true),
+            array("//example.com/test/", false),
+            array("example", false),
+            array("", false)
+        );
+    }
+}

tests/Coduo/PHPMatcher/MatcherTest.php

@@ -252,6 +252,8 @@ public static function expanderExamples()
             array("lorem ipsum", "@[email protected](\"lorem\")", true),
             array("[email protected]", "@[email protected]()", true),
             array("lorem ipsum", "@[email protected]()", false),
+            array("http://coduo.pl/", "@[email protected]()", true),
+            array("lorem ipsum", "@[email protected]()", false),
             array("2014-08-19", "@[email protected]()", true),
             array(100, "@[email protected](101).greaterThan(10)", true),
             array("", "@[email protected]()", false),