Add RegexValidator

src/RegexValidator.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace ipl\Validator;
+
+use Exception;
+use ipl\I18n\Translation;
+
+/**
+ * Validates value with given regex pattern
+ *
+ * Available options:
+ * - pattern (string, Regex pattern)
+ * - notMatchMessage (string, Message to show if value isn't valid, default null)
+ */
+class RegexValidator extends BaseValidator
+{
+    use Translation;
+
+    protected $pattern;
+
+    protected $notMatchMessage;
+
+    public function __construct($pattern)
+    {
+        if (is_array($pattern)) {
+            if (! isset($pattern['pattern'])) {
+                throw new Exception("Missing option 'pattern'");
+            }
+
+            $this->pattern = $pattern['pattern'];
+            $this->notMatchMessage = $pattern['notMatchMessage'] ?? null;
+        } else {
+            $this->pattern = (string) $pattern;
+        }
+    }
+
+    public function isValid($value)
+    {
+        // Multiple isValid() calls must not stack validation messages
+        $this->clearMessages();
+
+        if (empty($value)) {
+            return true;
+        }
+
+        $status = @preg_match($this->pattern, $value);
+        if ($status === false) {
+            $this->addMessage(sprintf(
+                "There was an internal error while using the pattern '%s'",
+                $this->pattern
+            ));
+
+            return false;
+        }
+
+        if ($status === 0) {
+            if (empty($this->notMatchMessage)) {
+                $this->addMessage(sprintf(
+                    $this->translate("'%s' does not match against pattern '%s'"),
+                    $value,
+                    $this->pattern
+                ));
+            } else {
+                $this->addMessage($this->notMatchMessage);
+            }
+
+            return false;
+        }
+
+        return true;
+    }
+}