Add parameter in function maybeGeneratePropertiesFile in order to choose to escape unicode or not.

src/main/java/pl/project13/core/PropertiesFileGenerator.java

@@ -46,7 +46,7 @@ public PropertiesFileGenerator(LogInterface log, BuildFileChangeListener buildFi
     this.projectName = projectName;
   }
 
-  public void maybeGeneratePropertiesFile(@Nonnull Properties localProperties, File base, String propertiesFilename, Charset sourceCharset) throws GitCommitIdExecutionException {
+  public void maybeGeneratePropertiesFile(@Nonnull Properties localProperties, File base, String propertiesFilename, Charset sourceCharset, boolean escapeUnicode) throws GitCommitIdExecutionException {
     try {
       final File gitPropsFile = craftPropertiesOutputFile(base, propertiesFilename);
       final boolean isJsonFormat = "json".equalsIgnoreCase(format);
@@ -91,7 +91,7 @@ public void maybeGeneratePropertiesFile(@Nonnull Properties localProperties, Fil
           } else {
             log.info(String.format("Writing properties file to [%s] (for module %s)...", gitPropsFile.getAbsolutePath(), projectName));
             // using outputStream directly instead of outputWriter this way the UTF-8 characters appears in unicode escaped form
-            PropertyManager.dumpProperties(outputStream, sortedLocalProperties);
+            PropertyManager.dumpProperties(outputStream, sortedLocalProperties, escapeUnicode);
           }
         } catch (final IOException ex) {
           throw new RuntimeException("Cannot create custom git properties file: " + gitPropsFile, ex);

src/main/java/pl/project13/core/util/PropertyManager.java

@@ -55,15 +55,15 @@ public static Properties readProperties(@Nonnull File propertiesFile, @Nonnull C
     }
   }
 
-  public static void dumpProperties(OutputStream outputStream, OrderedProperties sortedLocalProperties) throws IOException {
-    try (Writer outputWriter = new OutputStreamWriter(outputStream, StandardCharsets.ISO_8859_1)) {
+  public static void dumpProperties(OutputStream outputStream, OrderedProperties sortedLocalProperties, boolean escapeUnicode) throws IOException {
+    try (Writer outputWriter = new OutputStreamWriter(outputStream, StandardCharsets.UTF_8)) {
       // use the OrderedProperties.store(Writer, ...)-method to avoid illegal reflective access warning
       // see: https://github.com/git-commit-id/git-commit-id-maven-plugin/issues/523
       outputWriter.write("#Generated by Git-Commit-Id-Plugin");
       outputWriter.write(System.getProperty("line.separator"));
       for (Map.Entry<String, String> e : sortedLocalProperties.entrySet()) {
-        String key = saveConvert(e.getKey(), true, true);
-        String val =  saveConvert(e.getValue(), false, true);
+        String key = saveConvert(e.getKey(), true, escapeUnicode);
+        String val = saveConvert(e.getValue(), false, escapeUnicode);
         outputWriter.write(key + "=" + val);
         outputWriter.write(System.getProperty("line.separator"));
       }

src/test/java/pl/project13/core/PropertiesFileGeneratorTest.java

@@ -48,6 +48,44 @@ public void setUp() {
 
     propertiesFileGenerator = new PropertiesFileGenerator(logInterface, buildFileChangeListener, "properties", "", "test");
   }
+
+  @Test
+  public void generatedPropertiesFileDoesNotEscapeUnicode() throws GitCommitIdExecutionException, IOException {
+    Properties properties = new Properties();
+    properties.put(GitCommitPropertyConstant.COMMIT_ID_FULL, "b5993378ffadd1f84dc8da220b9204d157ec0f29");
+    properties.put(GitCommitPropertyConstant.BRANCH, "develop");
+    properties.put(GitCommitPropertyConstant.COMMIT_MESSAGE_SHORT, "測試中文");
+
+    Path propertiesPath = temporaryFolder.getRoot().toPath().resolve("git.properties");
+    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8, false);
+
+    byte[] bytes = Files.readAllBytes(propertiesPath);
+    String actualContent = new String(bytes, UTF_8);
+    String expectedContent = "#Generated by Git-Commit-Id-Plugin\n"
+            + "branch=develop\n"
+            + "commit.id.full=b5993378ffadd1f84dc8da220b9204d157ec0f29\n"
+            + "commit.message.short=測試中文\n";
+    assertEquals(expectedContent, actualContent);
+  }
+
+  @Test
+  public void generatedPropertiesFileEscapeUnicode() throws GitCommitIdExecutionException, IOException {
+    Properties properties = new Properties();
+    properties.put(GitCommitPropertyConstant.COMMIT_ID_FULL, "b5993378ffadd1f84dc8da220b9204d157ec0f29");
+    properties.put(GitCommitPropertyConstant.BRANCH, "develop");
+    properties.put(GitCommitPropertyConstant.COMMIT_MESSAGE_SHORT, "測試中文");
+
+    Path propertiesPath = temporaryFolder.getRoot().toPath().resolve("git.properties");
+    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8, true);
+
+    byte[] bytes = Files.readAllBytes(propertiesPath);
+    String actualContent = new String(bytes, UTF_8);
+    String expectedContent = "#Generated by Git-Commit-Id-Plugin\n"
+            + "branch=develop\n"
+            + "commit.id.full=b5993378ffadd1f84dc8da220b9204d157ec0f29\n"
+            + "commit.message.short=\\u6E2C\\u8A66\\u4E2D\\u6587\n";
+    assertEquals(expectedContent, actualContent);
+  }
 
   @Test
   public void generatedPropertiesFileDoesNotContainDateComment() throws GitCommitIdExecutionException, IOException {
@@ -56,7 +94,7 @@ public void generatedPropertiesFileDoesNotContainDateComment() throws GitCommitI
     properties.put(GitCommitPropertyConstant.BRANCH, "develop");
 
     Path propertiesPath = temporaryFolder.getRoot().toPath().resolve("git.properties");
-    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8);
+    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8, true);
 
     byte[] bytes = Files.readAllBytes(propertiesPath);
     String actualContent = new String(bytes, UTF_8);
@@ -73,10 +111,10 @@ public void rereadGeneratedPropertiesFile() throws GitCommitIdExecutionException
     properties.put(GitCommitPropertyConstant.BRANCH, "develop");
 
     Path propertiesPath = temporaryFolder.getRoot().toPath().resolve("git.properties");
-    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8);
+    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8, true);
 
     // Re-read the generated properties file.
-    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8);
+    propertiesFileGenerator.maybeGeneratePropertiesFile(properties, temporaryFolder.getRoot(), propertiesPath.getFileName().toString(), UTF_8, true);
 
     byte[] bytes = Files.readAllBytes(propertiesPath);
     String actualContent = new String(bytes, UTF_8);
@@ -85,4 +123,4 @@ public void rereadGeneratedPropertiesFile() throws GitCommitIdExecutionException
         + "commit.id.full=b5993378ffadd1f84dc8da220b9204d157ec0f29\n";
     assertEquals(expectedContent, actualContent);
   }
-}
+}