chore: cache current working dir in static field, other minor changes

jadx-core/src/main/java/jadx/api/ResourceType.java

@@ -41,7 +41,7 @@ public enum ResourceType {
 	}
 
 	public static ResourceType getFileType(String fileName) {
-		if (fileName.matches("[^/]+/resources.pb")) {
+		if (fileName.endsWith("/resources.pb")) {
 			return ARSC;
 		}
 		int dot = fileName.lastIndexOf('.');

jadx-core/src/main/java/jadx/core/utils/files/FileUtils.java

@@ -14,14 +14,11 @@ import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Comparator;
-import java.util.Enumeration;
 import java.util.List;
 import java.util.Objects;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 import java.util.stream.Stream;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipFile;
 
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -117,7 +114,11 @@ public class FileUtils {
 		try (Stream<Path> pathStream = Files.walk(dir)) {
 			pathStream.sorted(Comparator.reverseOrder())
 					.map(Path::toFile)
-					.forEach(File::delete);
+					.forEach(file -> {
+						if (!file.delete()) {
+							LOG.warn("Failed to remove file: {}", file.getAbsolutePath());
+						}
+					});
 		} catch (Exception e) {
 			throw new JadxRuntimeException("Failed to delete directory " + dir, e);
 		}
@@ -259,45 +260,6 @@ public class FileUtils {
 		return false;
 	}
 
-	private static List<String> getZipFileList(File file) {
-		List<String> filesList = new ArrayList<>();
-		try (ZipFile zipFile = new ZipFile(file)) {
-			Enumeration<? extends ZipEntry> entries = zipFile.entries();
-			while (entries.hasMoreElements()) {
-				ZipEntry entry = entries.nextElement();
-				filesList.add(entry.getName());
-			}
-		} catch (Exception e) {
-			LOG.error("Error read zip file '{}'", file.getAbsolutePath(), e);
-		}
-		return filesList;
-	}
-
-	public static boolean isApkFile(File file) {
-		if (!isZipFile(file)) {
-			return false;
-		}
-		List<String> filesList = getZipFileList(file);
-		return filesList.contains("AndroidManifest.xml")
-				&& filesList.contains("classes.dex");
-	}
-
-	public static boolean isZipDexFile(File file) {
-		if (!isZipFile(file) || !isZipFileCanBeOpen(file)) {
-			return false;
-		}
-		List<String> filesList = getZipFileList(file);
-		return filesList.contains("classes.dex");
-	}
-
-	private static boolean isZipFileCanBeOpen(File file) {
-		try (ZipFile zipFile = new ZipFile(file)) {
-			return zipFile.entries().hasMoreElements();
-		} catch (Exception e) {
-			return false;
-		}
-	}
-
 	public static String getPathBaseName(Path file) {
 		String fileName = file.getFileName().toString();
 		int extEndIndex = fileName.lastIndexOf('.');

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/utils/CommonFileUtils.java

@@ -1,6 +1,7 @@
 package jadx.api.plugins.utils;
 
 import java.io.ByteArrayOutputStream;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -9,6 +10,17 @@ import java.nio.file.Path;
 
 public class CommonFileUtils {
 
+	public static final File CWD = getCWD();
+	public static final Path CWD_PATH = CWD.toPath();
+
+	private static File getCWD() {
+		try {
+			return new File(".").getCanonicalFile();
+		} catch (IOException e) {
+			throw new RuntimeException("Failed to init current working dir constant", e);
+		}
+	}
+
 	public static Path saveToTempFile(InputStream in, String suffix) throws IOException {
 		return saveToTempFile(null, in, suffix);
 	}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/utils/ZipSecurity.java

@@ -48,7 +48,7 @@ public class ZipSecurity {
 	// and prevents cases like "../classes.dex", to limit output only to the specified directory
 	public static boolean isValidZipEntryName(String entryName) {
 		try {
-			File currentPath = new File(".").getCanonicalFile();
+			File currentPath = CommonFileUtils.CWD;
 			File canonical = new File(currentPath, entryName).getCanonicalFile();
 			if (isInSubDirectoryInternal(currentPath, canonical)) {
 				return true;