Adding headers to all source files.

HEADER

@@ -0,0 +1,17 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */

api/src/main/java/org/applecommander/applesingle/AppleSingle.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.io.File;

api/src/main/java/org/applecommander/applesingle/AppleSingleReader.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.nio.ByteBuffer;

api/src/main/java/org/applecommander/applesingle/Entry.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.io.IOException;

api/src/main/java/org/applecommander/applesingle/EntryType.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 public enum EntryType {

api/src/main/java/org/applecommander/applesingle/FileDatesInfo.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.nio.ByteBuffer;

api/src/main/java/org/applecommander/applesingle/ProdosFileInfo.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.nio.ByteBuffer;

api/src/main/java/org/applecommander/applesingle/Utilities.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import java.io.ByteArrayOutputStream;

api/src/test/java/org/applecommander/applesingle/AppleSingleReaderTest.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import org.junit.Test;

api/src/test/java/org/applecommander/applesingle/AppleSingleTest.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle;
 
 import static org.junit.Assert.assertArrayEquals;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/AnalyzeCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.IOException;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/CreateCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.IOException;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/EditCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import org.applecommander.applesingle.AppleSingle;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/ExtractCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.IOException;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/FilterCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.IOException;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/ForkType.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 /**

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/HexDumper.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.PrintStream;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/InfoCommand.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.File;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/IntRange.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.util.List;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/IntegerTypeConverter.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import picocli.CommandLine.ITypeConverter;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/Main.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.util.Optional;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/NullOutputStream.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.io.IOException;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/ProdosFileTypeConverter.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import java.util.HashMap;

tools/asu/src/main/java/org/applecommander/applesingle/tools/asu/VersionProvider.java

@@ -1,3 +1,20 @@
+/*
+ * AppleSingle - A Java library and command-line tool for AppleSingle support.
+ * Copyright (C) 2026  Robert Greene
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.applecommander.applesingle.tools.asu;
 
 import org.applecommander.applesingle.AppleSingle;