Changed FTLDat to allow opening dats in read-only mode

skel_common/readme_changelog.txt

@@ -1,5 +1,8 @@
 Changelog
 
+???:
+- Changed FTLDat to allow opening dats in read-only mode
+
 1.4:
 - Cleaned up some dodgy code when initially prompting for FTL's location
 - Added another common game location: "C:\Program Files (x86)\FTL"

src/main/java/net/vhati/ftldat/FTLDat.java

@@ -313,10 +313,12 @@ public class FTLDat {
 	public static class FolderPack extends AbstractPack {
 		private File rootDir;
 
+
 		public FolderPack( File rootDir ) {
 			this.rootDir = rootDir;
 		}
 
+
 		@Override
 		public String getName() {
 			return rootDir.getName();
@@ -447,21 +449,57 @@ public class FTLDat {
 		private Map<String,Integer> pathToIndexMap = null;
 		private ByteBuffer byteBuffer = null;
 
-		public FTLPack( File datFile, boolean create ) throws IOException {
-			this( datFile, create, 2048 );
+
+		/**
+		 * Opens or creates a dat in various modes.
+		 * When creating, the initial index size will be 2048.
+		 *
+		 * @see FTLPack(File datFile, String mode, int indexSize)
+		 */
+		public FTLPack( File datFile, String mode ) throws IOException {
+			this( datFile, mode, 2048 );
 		}
 
-		public FTLPack( File datFile, boolean create, int indexSize ) throws IOException {
-			this.datFile = datFile;
-			raf = new RandomAccessFile( datFile, "rw" );
+		/**
+		 * Opens or creates a dat in various modes.
+		 *
+		 * The mode must be one of the following:
+		 *   r  - opens an existing dat, read-only.
+		 *   r+ - opens an existing dat, read/write.
+		 *   w+ - creates a new empty dat, read/write.
+		 *
+		 * @param datFile a file to open/create
+		 * @param mode see above
+		 * @param indexSize size of the initial index if creating
+		 */
+		public FTLPack( File datFile, String mode, int indexSize ) throws IOException {
+			if ( mode.equals( "r" ) ) {
+				if ( !datFile.exists() )
+					throw new FileNotFoundException( String.format( "The datFile was not found: %s", datFile.getPath() ) );
 
-			if ( create ) {
-				createIndex( indexSize );
-			} else {
+				this.datFile = datFile;
+				raf = new RandomAccessFile( datFile, "r" );
 				readIndex();
 			}
+			else if ( mode.equals( "r+" ) ) {
+				if ( !datFile.exists() )
+					throw new FileNotFoundException( String.format( "The datFile was not found: %s", datFile.getPath() ) );
+
+				this.datFile = datFile;
+				raf = new RandomAccessFile( datFile, "rw" );
+				readIndex();
+			}
+			else if ( mode.equals( "w+" ) ) {
+				this.datFile = datFile;
+				raf = new RandomAccessFile( datFile, "rw" );
+				createIndex( indexSize );
+			}
+			else {
+				throw new IllegalArgumentException( String.format( "FTLPack constructor's mode arg was not 'r', 'r+', or 'w+' (%s).", mode ) );
+			}
 		}
 
+
 		/**
 		 * Reads a little-endian unsigned int.
 		 * Java doesn't have an unsigned int primitive,

src/main/java/net/vhati/modmanager/FTLModManager.java

@@ -25,7 +25,7 @@ public class FTLModManager {
 	private static final Logger log = LogManager.getLogger(FTLModManager.class);
 
 	public static final String APP_NAME = "Slipstream Mod Manager";
-	public static final ComparableVersion APP_VERSION = new ComparableVersion( "1.4" );
+	public static final ComparableVersion APP_VERSION = new ComparableVersion( "???" );
 	public static final String APP_URL = "http://www.ftlgame.com/forum/viewtopic.php?f=12&t=17102";
 	public static final String APP_AUTHOR = "Vhati";
 

src/main/java/net/vhati/modmanager/cli/SlipstreamCLI.java

@@ -201,7 +201,7 @@ public class SlipstreamCLI {
 				dstP = new FTLDat.FolderPack( extractDir );
 
 				for ( File datFile : datFiles ) {
-					srcP = new FTLDat.FTLPack( datFile, false );
+					srcP = new FTLDat.FTLPack( datFile, "r" );
 					List<String> innerPaths = srcP.list();
 
 					for ( String innerPath : innerPaths ) {

src/main/java/net/vhati/modmanager/core/ModPatchThread.java

@@ -156,8 +156,8 @@ public class ModPatchThread extends Thread {
 				return true;
 			}
 
-			dataP = new FTLPack( dataDat.datFile, false );
-			resP = new FTLPack( resDat.datFile, false );
+			dataP = new FTLPack( dataDat.datFile, "r+" );
+			resP = new FTLPack( resDat.datFile, "r+" );
 
 			Map<String,AbstractPack> topFolderMap = new HashMap<String,AbstractPack>();
 			topFolderMap.put( "data", dataP );

src/main/java/net/vhati/modmanager/ui/DatExtractDialog.java

@@ -84,7 +84,7 @@ public class DatExtractDialog extends ProgressDialog {
 				dstP = new FTLDat.FolderPack( extractDir );
 
 				for ( File datFile : datFiles ) {
-					srcP = new FTLDat.FTLPack( datFile, false );
+					srcP = new FTLDat.FTLPack( datFile, "r" );
 					progress = 0;
 					List<String> innerPaths = srcP.list();
 					setProgressLater( progress, innerPaths.size() );

src/main/java/net/vhati/modmanager/ui/ModXMLSandbox.java

@@ -322,7 +322,7 @@ public class ModXMLSandbox extends JFrame implements ActionListener {
 		FTLDat.FTLPack dataP = null;
 		InputStream is = null;
 		try {
-			dataP = new FTLDat.FTLPack( dataDatFile, false );
+			dataP = new FTLDat.FTLPack( dataDatFile, "r" );
 			List<String> innerPaths = dataP.list();
 
 			String innerPath = promptForInnerPath( innerPaths );