created mirror

Java/transform/Version0.java

@@ -0,0 +1,66 @@
+/*   
+Version0.java
+ *    
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software 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 README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuukka Hastrup
+ */
+package org.gzigzag.transform;
+import java.util.*;
+import org.gzigzag.*;
+
+/** ZZspace version changer - from version 0 to version 1.
+ */
+
+public class Version0 implements VersionChanger {
+String rcsid = "$Id: Version0.java,v 1.7 2000/10/18 14:35:32 tjl Exp $";
+	static public final void pa(String s) { System.out.println(s); }
+	static public final void pan(String s) { System.out.print(s); }
+/** Change the space from version 0 to version 1 to make it compatible:
+ *  <ul>
+ *  <li> d.mycursor is renamed to d.cursor-cargo
+ *  <li> d.cursor-cargo and d.cursor directions are reversed
+ *  <li> System cell "FlobCanvasRasters" is renamed as "FlobRasters"
+ *  </ul>
+ *  Note that flobs will not work before a new client space is created
+ *  with command line options <b>new</b> and <b>dcold</b>.
+ *  @param s	The space to convert
+ */
+        public int changeVersion(ZZSpace s) {
+		pa("Converting from version 0 to version 1:");
+		pa("Cursor dimensions rearranged for consistency.");
+		pan("Changing d.mycursor connections to d.cursor-cargo:");
+                (new ChangeDim("d.mycursor", "d.cursor-cargo", s)).transform();
+		pa(" Name changed.");
+		pan("Reversing connections along d.cursor and d.cursor-cargo:");
+                (new ReverseDim("d.cursor", s)).transform();
+                (new ReverseDim("d.cursor-cargo", s)).transform();
+		pa(" Headcell (negend) now accursed.");
+		pa("The new flob code won't work unless you create "
+		 + "new client space (options -new and -dcold).");
+		pa("Changing the system cell \"FlobCanvasRasters\" "
+		 + "to \"Flobrasters\" to respect code changes.");
+		ZZCell frasters = s.getHomeCell()
+				   .findText("d.2", 1, "FlobCanvasRasters");
+		if(frasters != null) {
+			frasters.setText("FlobRasters");
+			frasters.disconnect("d.1", 1);
+			frasters.N("d.1", 1).setText("dummy");
+		}
+                return 1;
+        }
+}
+