Created rules for validating credit cards and ip addresses

Author: ditschedev

src/main/java/dev/ditsche/validator/rule/ruleset/CreditCardRule.java

@@ -0,0 +1,30 @@
+package dev.ditsche.validator.rule.ruleset;
+
+import dev.ditsche.validator.rule.Rule;
+import dev.ditsche.validator.rule.RuleResult;
+
+import java.util.regex.Pattern;
+
+/**
+ * Checks if the provided value is a valid credit card number.
+ *
+ * @author Tobias Dittmann
+ */
+public class CreditCardRule implements Rule {
+
+    private final String PATTERN = "^(\\\\d{4}[- ]?){3}\\\\d{4}$";
+
+    @Override
+    public RuleResult passes(Object value) {
+
+        if(!(value instanceof String))
+            return RuleResult.reject();
+
+        return RuleResult.passes(Pattern.matches(PATTERN, String.valueOf(value)));
+    }
+
+    @Override
+    public String message(String field) {
+        return String.format("The field \"%s\" needs to be a valid credit card", field);
+    }
+}

src/main/java/dev/ditsche/validator/rule/ruleset/IpAddressRule.java

@@ -0,0 +1,30 @@
+package dev.ditsche.validator.rule.ruleset;
+
+import dev.ditsche.validator.rule.Rule;
+import dev.ditsche.validator.rule.RuleResult;
+
+import java.util.regex.Pattern;
+
+/**
+ * Checks for a valid ip address.
+ *
+ * @author Tobias Dittmann
+ */
+public class IpAddressRule implements Rule {
+
+    private final String PATTERN = "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";
+
+    @Override
+    public RuleResult passes(Object value) {
+
+        if(!(value instanceof String))
+            return RuleResult.reject();
+
+        return RuleResult.passes(Pattern.matches(PATTERN, String.valueOf(value)));
+    }
+
+    @Override
+    public String message(String field) {
+        return String.format("The field \"%s\" needs to be a valid ip address", field);
+    }
+}