Added IP4 validator

README.md

@@ -29,6 +29,7 @@ At the moment we have following pre-defined validation rules:
 - `maxLength`
 - `age`
 - `sameAs`
+- `ip4`
 
 You can also provide custom validation rule using `with(Validator<EditText> externalValidator)` operator. **It gives you possibility to define your own rules e.g. validate e-mail via HTTP call.**
 

lib/src/main/java/com/github/phajduk/rxvalidator/RxValidator.java

@@ -6,6 +6,7 @@
 import com.github.phajduk.rxvalidator.validators.DigitValidator;
 import com.github.phajduk.rxvalidator.validators.EmailValidator;
 import com.github.phajduk.rxvalidator.validators.InListValidator;
+import com.github.phajduk.rxvalidator.validators.Ip4Validator;
 import com.github.phajduk.rxvalidator.validators.LengthValidator;
 import com.github.phajduk.rxvalidator.validators.MaxLengthValidator;
 import com.github.phajduk.rxvalidator.validators.MinLengthValidator;
@@ -84,6 +85,16 @@ public RxValidator email(String invalidEmailMessage, Pattern pattern) {
     return this;
   }
 
+  public RxValidator ip4() {
+    this.validators.add(new Ip4Validator());
+    return this;
+  }
+
+  public RxValidator ip4(String invalidIp4Message) {
+    this.validators.add(new Ip4Validator(invalidIp4Message));
+    return this;
+  }
+
   public RxValidator pattern(String invalidValueMessage, Pattern pattern) {
     this.validators.add(new PatternValidator(invalidValueMessage, pattern));
     return this;

lib/src/main/java/com/github/phajduk/rxvalidator/validators/Ip4Validator.java

@@ -0,0 +1,20 @@
+package com.github.phajduk.rxvalidator.validators;
+
+import java.util.regex.Pattern;
+
+public class Ip4Validator extends PatternValidator {
+
+  private static final String DEFAULT_MESSAGE = "Invalid IP";
+
+  public Ip4Validator() {
+    super(DEFAULT_MESSAGE, android.util.Patterns.IP_ADDRESS);
+  }
+
+  public Ip4Validator(String invalidIpMessage) {
+    super(invalidIpMessage, android.util.Patterns.IP_ADDRESS);
+  }
+
+  public Ip4Validator(String invalidIpMessage, Pattern pattern) {
+    super(invalidIpMessage, pattern);
+  }
+}

sample/src/main/java/com/github/phajduk/rxvalidator/sample/MainActivity.java

@@ -31,6 +31,7 @@ public class MainActivity extends AppCompatActivity {
     EditText password = (EditText) findViewById(R.id.etPassword);
     EditText confirmPassword = (EditText) findViewById(R.id.etConfirmPassword);
     EditText birthday = (EditText) findViewById(R.id.etBirthday);
+    EditText ip4Address = (EditText) findViewById(R.id.etIp4);
     setDatePickerListener(birthday);
 
     RxValidator.createFor(email)
@@ -100,6 +101,22 @@ public class MainActivity extends AppCompatActivity {
             Log.e(TAG, "Validation error", throwable);
           }
         });
+
+    RxValidator.createFor(ip4Address)
+        .ip4("Invalid IP4 format")
+        .onValueChanged()
+        .toObservable()
+        .observeOn(AndroidSchedulers.mainThread())
+        .subscribe(new Action1<RxValidationResult<EditText>>() {
+          @Override public void call(RxValidationResult<EditText> result) {
+            result.getItem().setError(result.isProper() ? null : result.getMessage());
+            Log.i(TAG, "Validation result " + result.toString());
+          }
+        }, new Action1<Throwable>() {
+          @Override public void call(Throwable throwable) {
+            Log.e(TAG, "Validation error", throwable);
+          }
+        });
   }
 
   private void setDatePickerListener(final EditText birthday) {

sample/src/main/res/layout/activity_main.xml

@@ -45,6 +45,13 @@
       android:hint="birthday"
       />
 
+  <EditText
+      android:id="@+id/etIp4"
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:hint="IP4 address"
+      />
+
   <Button
       android:id="@+id/button"
       android:text="Validate!"