Fix executable file permissions in archives

This change allows any file generated with the executable file
permission to be stored within the tgz or zip archive with executable
file permission.

Before this change only Maven and Gradle wrapper scrips would get
executable file permission within the archive, even though classes like
MultipleResourcesProjectContributor allow for setting the executable
file permission on other generated files.

initializr-web/src/main/java/io/spring/initializr/web/controller/ProjectGenerationController.java

@@ -29,9 +29,6 @@
 import java.util.function.Function;
 import java.util.stream.Stream;
 
-import io.spring.initializr.generator.buildsystem.BuildSystem;
-import io.spring.initializr.generator.buildsystem.maven.MavenBuildSystem;
-import io.spring.initializr.generator.project.ProjectDescription;
 import io.spring.initializr.metadata.InitializrMetadata;
 import io.spring.initializr.metadata.InitializrMetadataProvider;
 import io.spring.initializr.web.project.InvalidProjectRequestException;
@@ -158,15 +155,14 @@ private <T extends ArchiveEntry> Path createArchive(ProjectGenerationResult resu
 			BiFunction<File, String, T> archiveEntry, BiConsumer<T, Integer> setMode) throws IOException {
 		Path archive = this.projectGenerationInvoker.createDistributionFile(result.getRootDirectory(),
 				"." + fileExtension);
-		String wrapperScript = getWrapperScript(result.getProjectDescription());
 		try (ArchiveOutputStream<T> output = archiveOutputStream.apply(Files.newOutputStream(archive))) {
 			Stream<Path> files = Files.walk(result.getRootDirectory());
 			try (files) {
 				files.filter((path) -> !result.getRootDirectory().equals(path)).forEach((path) -> {
 					try {
 						String entryName = getEntryName(result.getRootDirectory(), path);
 						T entry = archiveEntry.apply(path.toFile(), entryName);
-						setMode.accept(entry, getUnixMode(wrapperScript, entryName, path));
+						setMode.accept(entry, getUnixMode(path));
 						output.putArchiveEntry(entry);
 						if (!Files.isDirectory(path)) {
 							Files.copy(path, output);
@@ -190,11 +186,11 @@ private String getEntryName(Path root, Path path) {
 		return entryName;
 	}
 
-	private int getUnixMode(String wrapperScript, String entryName, Path path) {
+	private int getUnixMode(Path path) {
 		if (Files.isDirectory(path)) {
 			return UnixStat.DIR_FLAG | UnixStat.DEFAULT_DIR_PERM;
 		}
-		return UnixStat.FILE_FLAG | (entryName.equals(wrapperScript) ? 0755 : UnixStat.DEFAULT_FILE_PERM);
+		return UnixStat.FILE_FLAG | (Files.isExecutable(path) ? 0755 : UnixStat.DEFAULT_FILE_PERM);
 	}
 
 	private String generateFileName(String artifactId, String extension) {
@@ -203,12 +199,6 @@ private String generateFileName(String artifactId, String extension) {
 		return URLEncoder.encode(candidate, StandardCharsets.UTF_8) + "." + extension;
 	}
 
-	private static String getWrapperScript(ProjectDescription description) {
-		BuildSystem buildSystem = description.getBuildSystem();
-		String script = buildSystem.id().equals(MavenBuildSystem.ID) ? "mvnw" : "gradlew";
-		return (description.getBaseDirectory() != null) ? description.getBaseDirectory() + "/" + script : script;
-	}
-
 	private ResponseEntity<byte[]> upload(Path archive, Path dir, String fileName, String contentType)
 			throws IOException {
 		byte[] bytes = Files.readAllBytes(archive);