Write git.json file with UTF-8 encoding.

Resolves #130

Author: frankbregulla1111

src/main/java/pl/project13/maven/git/GitCommitIdMojo.java

@@ -22,7 +22,6 @@
 import com.google.common.base.Function;
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
-import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
 import com.google.common.io.Closeables;
 import com.google.common.io.Files;
@@ -272,14 +271,6 @@ public class GitCommitIdMojo extends AbstractMojo {
   @SuppressWarnings("UnusedDeclaration")
   private List<String> excludeProperties = Collections.emptyList();
 
-  /**
-   * Specifies the character encoding for the properties file that is generated by this plugin
-   *
-   * @parameter  expression="${encoding}" default-value="${project.reporting.outputEncoding}
-   * @since 2.1.11
-   */
-  private String encoding;
-
   /**
    * The properties we store our data in and then expose them
    */
@@ -499,7 +490,7 @@ void generatePropertiesFile(@NotNull Properties properties, File base, String pr
     try {
       Files.createParentDirs(gitPropsFile);
 
-      outputWriter = new OutputStreamWriter(new FileOutputStream(gitPropsFile), determineEncoding());
+      outputWriter = new OutputStreamWriter(new FileOutputStream(gitPropsFile), Charset.forName("UTF-8"));
       if ("json".equalsIgnoreCase(format)) {
         log("Writing json file to [", gitPropsFile.getAbsolutePath(), "] (for module ", project.getName(), ")...");
         ObjectMapper mapper = new ObjectMapper();
@@ -516,20 +507,6 @@ void generatePropertiesFile(@NotNull Properties properties, File base, String pr
     }
   }
 
-  private String determineEncoding() {
-    if (Strings.isNullOrEmpty(this.encoding) )
-    {
-        getLog().warn(
-                "File encoding has not been set, using platform encoding " + Charset.defaultCharset().name()
-                        + ", i.e. build is platform dependent!" );
-        return Charset.defaultCharset().name();
-    }
-    else
-    {
-        return this.encoding;
-    }
-  }
-
   @VisibleForTesting
   File craftPropertiesOutputFile(File base, String propertiesFilename){
     File returnPath = new File(base, propertiesFilename);

src/test/java/pl/project13/maven/git/GitCommitIdMojoIntegrationTest.java

@@ -208,42 +208,6 @@ public void shouldGenerateCustomPropertiesFileProperties(boolean useNativeGit) t
   @Test
   @Parameters(method = "useNativeGit")
   public void shouldGenerateCustomPropertiesFileJson(boolean useNativeGit) throws Exception {
-    // given
-    mavenSandbox.withParentProject("my-pom-project", "pom")
-                .withChildProject("my-jar-module", "jar")
-                .withGitRepoInChild(AvailableGitTestRepo.GIT_COMMIT_ID)
-                .create(CleanUp.CLEANUP_FIRST);
-
-    MavenProject targetProject = mavenSandbox.getChildProject();
-
-    String targetFilePath = "target/classes/custom-git.properties";
-    File expectedFile = new File(targetProject.getBasedir(), targetFilePath);
-
-    setProjectToExecuteMojoIn(targetProject);
-    alterMojoSettings("generateGitPropertiesFile", true);
-    alterMojoSettings("generateGitPropertiesFilename", targetFilePath);
-    alterMojoSettings("format", "json");
-    alterMojoSettings("useNativeGit", useNativeGit);
-
-    // when
-    try {
-      mojo.execute();
-
-      // then
-      assertThat(expectedFile).exists();
-      String json = Files.toString(expectedFile, Charset.defaultCharset());
-      ObjectMapper om = new ObjectMapper();
-      Map<String, String> map = new HashMap<String, String>();
-      map = om.readValue(expectedFile, map.getClass());
-      assertThat(map.size() > 10);
-    } finally {
-      FileUtils.forceDelete(expectedFile);
-    }
-  }
-
-  @Test
-  @Parameters(value = {"UTF-8", "ISO-8859-1"})
-  public void shouldGenerateCustomPropertiesFileJsonWithCustomEncoding(String encoding) throws Exception {
     // given
     mavenSandbox.withParentProject("my-pom-project", "pom")
                 .withChildProject("my-jar-module", "jar")
@@ -254,21 +218,19 @@ public void shouldGenerateCustomPropertiesFileJsonWithCustomEncoding(String enco
 
     String targetFilePath = "target/classes/custom-git.properties";
     File expectedFile = new File(targetProject.getBasedir(), targetFilePath);
-    Charset charset = Charset.forName(encoding);
 
     setProjectToExecuteMojoIn(targetProject);
     alterMojoSettings("generateGitPropertiesFile", true);
     alterMojoSettings("generateGitPropertiesFilename", targetFilePath);
     alterMojoSettings("format", "json");
-    alterMojoSettings("useNativeGit", true);
-    alterMojoSettings("encoding", charset.name());
+    alterMojoSettings("useNativeGit", useNativeGit);
     // when
     try {
       mojo.execute();
 
       // then
       assertThat(expectedFile).exists();
-      String json = Files.toString(expectedFile, charset);
+      String json = Files.toString(expectedFile, Charset.forName("UTF-8"));
       ObjectMapper om = new ObjectMapper();
       Map<String, String> map = new HashMap<String, String>();
       map = om.readValue(json, map.getClass());