Fixed tags removal from notes with carriage returns (closes #942)

Author: federicoiosue

omniNotes/src/main/java/it/feio/android/omninotes/utils/TagsHelper.java

@@ -30,6 +30,7 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicReference;
 import lombok.experimental.UtilityClass;
 import org.apache.commons.lang3.StringUtils;
 
@@ -94,15 +95,20 @@ public static String removeTags(String text, List<Tag> tagsToRemove) {
     if (StringUtils.isEmpty(text)) {
       return text;
     }
-    String[] textCopy = new String[]{text};
-    from(tagsToRemove).forEach(tagToRemove -> textCopy[0] = removeTag(textCopy[0], tagToRemove));
-    return textCopy[0];
+    var textCopy = new AtomicReference<>(text);
+    from(tagsToRemove).forEach(tagToRemove -> textCopy.set(removeTag(textCopy.get(), tagToRemove)));
+    return textCopy.get();
   }
 
   private static String removeTag(String textCopy, Tag tagToRemove) {
-    return from(textCopy.split(" "))
+    var spaceProcessed = tokenizeAndRemoveTag(textCopy, " ", tagToRemove);
+    return tokenizeAndRemoveTag(spaceProcessed, "\n", tagToRemove);
+  }
+
+  private static String tokenizeAndRemoveTag(String text, String separator, Tag tagToRemove) {
+    return from(text.split(separator))
         .map(word -> removeTagFromWord(word, tagToRemove))
-        .reduce((s, s2) -> s + " " + s2)
+        .reduce((s, s2) -> s + separator + s2)
         .toBlocking()
         .singleOrDefault("")
         .trim();

omniNotes/src/test/java/it/feio/android/omninotes/utils/TagsHelperTest.java

@@ -36,11 +36,11 @@
 
 public class TagsHelperTest {
 
-  private static Tag TAG1 = new Tag("#mixed", 1);
-  private static Tag TAG2 = new Tag("#tags", 1);
-  private static Tag TAG3 = new Tag("#tag", 1);
-  private static Tag TAG4 = new Tag("#numberedAfter123", 1);
-  private static Tag TAG_INVALID = new Tag("#123numbered", 1);
+  private static final Tag TAG1 = new Tag("#mixed", 1);
+  private static final Tag TAG2 = new Tag("#tags", 1);
+  private static final Tag TAG3 = new Tag("#tag", 1);
+  private static final Tag TAG4 = new Tag("#numberedAfter123", 1);
+  private static final Tag TAG_INVALID = new Tag("#123numbered", 1);
 
   private Note note;
 
@@ -129,7 +129,7 @@ public void TestTagWithComma() {
   }
 
   @Test
-  public void removeTags_specialCharsKeeped () {
+  public void removeTags_specialCharsKept () {
     String text = "<>[],-.(){}!?\n\t text";
     String testString = text + " " + TAG1.getText();
 
@@ -138,6 +138,16 @@ public void removeTags_specialCharsKeeped () {
     assertEquals(text, result);
   }
 
+  @Test
+  public void removeTags_mixedCarriageReturns () {
+    var text = "some text\n" + TAG1.getText() + " other following text ending with " + TAG2.getText();
+    var expected = "some text\n other following text ending with " + TAG2.getText();
+
+    var result = TagsHelper.removeTags(text, singletonList(TAG1));
+
+    assertEquals(expected, result);
+  }
+
   @Test
   public void removeTagFromWord() {
     String word = TAG3 + "(and";