[enhance] Add support to trim trailing whitespace from commit messages

src/main/java/com/github/koraktor/mavanagaiata/mojo/ChangelogFormat.java

@@ -14,6 +14,8 @@
 import com.github.koraktor.mavanagaiata.git.GitCommit;
 import com.github.koraktor.mavanagaiata.git.GitTag;
 
+import org.apache.commons.lang3.StringUtils;
+
 import static com.github.koraktor.mavanagaiata.mojo.AbstractGitOutputMojo.unescapeFormatNewlines;
 import static org.apache.commons.text.StringEscapeUtils.escapeHtml4;
 
@@ -173,12 +175,17 @@ void printBranch(String branchName) {
      * Print a single line for a commit
      *
      * @param currentCommit The commit to print
+     * @param trimTrailingWhitespace Trim the trailing whitespace from commit
      */
-    void printCommit(GitCommit currentCommit) {
+    void printCommit(GitCommit currentCommit, boolean trimTrailingWhitespace) {
         String commitMessage = escapeHtml ?
             escapeHtml4(currentCommit.getMessageSubject()) :
             currentCommit.getMessageSubject();
 
+        if (trimTrailingWhitespace) {
+            commitMessage = StringUtils.stripEnd(commitMessage, null);
+        }
+
         printStream.println(commitPrefix + commitMessage);
     }
 

src/main/java/com/github/koraktor/mavanagaiata/mojo/ChangelogMojo.java

@@ -143,6 +143,16 @@ enum LinkToBaseUrl {
     @Parameter(property = "mavanagaiata.changelog.skipCommitsMatching")
     String skipCommitsMatching;
 
+    /**
+     * Whether to trim trailing whitespace from commits.
+     * <p>
+     * This is useful for cases where auto formatting used and changelog checked in.
+     *
+     * @since 1.1.0
+     */
+    @Parameter(property = "mavanagaiata.changelog.trimTrailingWhitespace")
+    boolean trimTrailingWhitespace;
+
     private Pattern skipCommitsPattern;
 
     /**
@@ -255,7 +265,7 @@ protected void run() throws GitRepositoryException {
                 format.printBranch(repository.getBranch());
             }
 
-            format.printCommit(currentCommit);
+            format.printCommit(currentCommit, trimTrailingWhitespace);
         }
 
     }

src/test/java/com/github/koraktor/mavanagaiata/mojo/ChangelogFormatTest.java

@@ -138,7 +138,17 @@ public boolean isLoaded() {
     @DisplayName("should print a commit with the given format")
     @Test
     void testPrintCommit() throws IOException {
-        format.printCommit(commit());
+        format.printCommit(commit(), false);
+
+        assertOutputLine("");
+        assertOutputLine("- Commit > message");
+        assertOutputLine(null);
+    }
+
+    @DisplayName("should print a commit with the given format trimming whitespace")
+    @Test
+    void testPrintCommitTrim() throws IOException {
+        format.printCommit(commitTrailingSpace(), true);
 
         assertOutputLine("");
         assertOutputLine("- Commit > message");
@@ -149,7 +159,7 @@ void testPrintCommit() throws IOException {
     @Test
     void testPrintCommitEscapeHtml() throws IOException {
         format.escapeHtml = true;
-        format.printCommit(commit());
+        format.printCommit(commit(), false);
 
         assertOutputLine("");
         assertOutputLine("- Commit > message");
@@ -274,4 +284,68 @@ public boolean isMergeCommit() {
             }
         };
     }
+
+    private GitCommit commitTrailingSpace() {
+        return new GitCommit() {
+            @Override
+            public Date getAuthorDate() {
+                return null;
+            }
+
+            @Override
+            public String getAuthorEmailAddress() {
+                return null;
+            }
+
+            @Override
+            public String getAuthorName() {
+                return null;
+            }
+
+            @Override
+            public TimeZone getAuthorTimeZone() {
+                return null;
+            }
+
+            @Override
+            public Date getCommitterDate() {
+                return null;
+            }
+
+            @Override
+            public String getCommitterEmailAddress() {
+                return null;
+            }
+
+            @Override
+            public String getCommitterName() {
+                return null;
+            }
+
+            @Override
+            public TimeZone getCommitterTimeZone() {
+                return null;
+            }
+
+            @Override
+            public String getId() {
+                return null;
+            }
+
+            @Override
+            public String getMessage() {
+                return null;
+            }
+
+            @Override
+            public String getMessageSubject() {
+                return "Commit > message    ";
+            }
+
+            @Override
+            public boolean isMergeCommit() {
+                return false;
+            }
+        };
+    }
 }