* use NIO.2 to create folders everywhere so we can get better error messages / exception messages

source/net/filebot/Main.java

@@ -134,7 +134,7 @@ public class Main {
 
 			// make sure java.io.tmpdir exists
 			File tmpdir = new File(System.getProperty("java.io.tmpdir"));
-			tmpdir.mkdirs();
+			createFolders(tmpdir);
 
 			// initialize this stuff before anything else
 			initializeCache();
@@ -437,9 +437,9 @@ public class Main {
 		try {
 			for (int i = 0; true; i++) {
 				File cache = new File(cacheRoot, String.format("%d", i));
-				if (!cache.isDirectory() && !cache.mkdirs()) {
-					throw new IOException("Failed to create cache dir: " + cache);
-				}
+
+				// make sure cache is accessible
+				createFolders(cache);
 
 				final File lockFile = new File(cache, ".lock");
 				boolean isNewCache = !lockFile.exists();

source/net/filebot/Settings.java

@@ -1,5 +1,6 @@
 package net.filebot;
 
+import static net.filebot.util.FileUtilities.*;
 import static net.filebot.util.StringUtilities.*;
 
 import java.awt.GraphicsEnvironment;
@@ -143,9 +144,12 @@ public final class Settings {
 		}
 
 		// create folder if necessary
-		if (!applicationFolder.exists()) {
-			applicationFolder.mkdirs();
+		try {
+			createFolders(applicationFolder);
+		} catch (Exception e) {
+			throw new IllegalStateException("application.dir", e);
 		}
+
 		return applicationFolder;
 	}
 
@@ -160,9 +164,12 @@ public final class Settings {
 		}
 
 		// create folder if necessary
-		if (!cacheFolder.exists()) {
-			cacheFolder.mkdirs();
+		try {
+			createFolders(cacheFolder);
+		} catch (Exception e) {
+			throw new IllegalStateException("application.cache", e);
 		}
+
 		return cacheFolder;
 	}
 

source/net/filebot/cli/ScriptShellMethods.java

@@ -310,7 +310,7 @@ public class ScriptShellMethods {
 		file = file.getAbsoluteFile();
 
 		// make sure parent folders exist
-		file.getParentFile().mkdirs();
+		FileUtilities.createFolders(file.getParentFile());
 
 		return FileUtilities.writeFile(self, file);
 	}
@@ -324,7 +324,7 @@ public class ScriptShellMethods {
 		file = file.getAbsoluteFile();
 
 		// make sure parent folders exist
-		file.getParentFile().mkdirs();
+		FileUtilities.createFolders(file.getParentFile());
 
 		org.apache.commons.io.FileUtils.copyURLToFile(self, file);
 		return file;

source/net/filebot/util/FileUtilities.java

@@ -156,11 +156,17 @@ public final class FileUtilities {
 		return org.apache.commons.io.FileUtils.deleteQuietly(file);
 	}
 
+	public static void createFolders(File folder) throws IOException {
+		if (!folder.isDirectory()) {
+			Files.createDirectories(folder.toPath());
+		}
+	}
+
 	public static void createFileIfNotExists(File file) throws IOException {
 		if (!file.isFile()) {
 			// create parent folder structure if necessary & create file
 			Files.createDirectories(file.getParentFile().toPath());
-			Files.createFile(file.toPath()).toFile();
+			Files.createFile(file.toPath());
 		}
 	}
 

source/net/filebot/util/TemporaryFolder.java

@@ -73,7 +73,6 @@ public final class TemporaryFolder {
 	 *             if an I/O error occurred
 	 */
 	public File createFile(String name) throws IOException {
-
 		// if the directory does not exist it will be created
 		File file = new File(getFolder(), name);
 		file.createNewFile();
@@ -97,7 +96,7 @@ public final class TemporaryFolder {
 		return File.createTempFile(prefix, suffix, getFolder());
 	}
 
-	public boolean deleteFile(String name) {
+	public boolean deleteFile(String name) throws IOException {
 		return new File(getFolder(), name).delete();
 	}
 
@@ -106,15 +105,12 @@ public final class TemporaryFolder {
 	 * 
 	 * @return the {@link File} object for this {@link TemporaryFolder}
 	 */
-	public File getFolder() {
-		if (!root.exists()) {
-			root.mkdirs();
-		}
-
+	public File getFolder() throws IOException {
+		FileUtilities.createFolders(root);
 		return root;
 	}
 
-	public TemporaryFolder subFolder(String name) {
+	public TemporaryFolder subFolder(String name) throws IOException {
 		return new TemporaryFolder(new File(getFolder(), name));
 	}