Catch more structure export exceptions, add more information to exception messages.

src/main/java/com/dfsek/terra/structure/InitializationException.java

@@ -1,7 +1,22 @@
 package com.dfsek.terra.structure;
 
+import org.bukkit.Location;
+import org.jetbrains.annotations.Nullable;
+
 public class InitializationException extends Exception {
-    public InitializationException(String message) {
+    private final Location worldLoc;
+    public InitializationException(String message, @Nullable Location worldLoc) {
         super(message);
+        this.worldLoc = worldLoc == null ? null :worldLoc.clone();
+    }
+
+    @Override
+    public String getMessage() {
+        return super.getMessage() + " (at location: " + worldLoc.toString() + ")";
+    }
+
+    @Nullable
+    public Location getWorldLoc() {
+        return worldLoc;
     }
 }

src/main/java/com/dfsek/terra/structure/Structure.java

@@ -79,6 +79,7 @@ public class Structure implements Serializable {
                     StructureContainedBlock.Pull pull = StructureContainedBlock.Pull.NONE;
                     int pullOffset = 0;
                     StructureSpawnRequirement requirement = StructureSpawnRequirement.BLANK;
+                    try {
                         if(state instanceof Sign) { // Magic sign stuff
                             Sign s = (Sign) b.getState();
                             if(s.getLine(0).equals("[TERRA]")) {
@@ -94,7 +95,7 @@ public class Structure implements Serializable {
                                         try {
                                             requirement = StructureSpawnRequirement.valueOf(spawn.toUpperCase());
                                         } catch(IllegalArgumentException e) {
-                                        throw new InitializationException("Invalid spawn type: " + spawn);
+                                            throw new InitializationException("Invalid spawn type: " + spawn, b.getLocation());
                                         }
                                     } else if(s.getLine(1).startsWith("[PULL=") && s.getLine(1).endsWith("]")) {
                                         String og = s.getLine(1);
@@ -103,16 +104,19 @@ public class Structure implements Serializable {
                                         try {
                                             pull = StructureContainedBlock.Pull.valueOf(spawn);
                                         } catch(IllegalArgumentException e) {
-                                        throw new InitializationException("Invalid pull type: " + spawn);
+                                            throw new InitializationException("Invalid pull type: " + spawn, b.getLocation());
                                         }
                                     } else {
-                                    throw new InitializationException("Invalid Magic Sign: \"" + s.getLine(1) + "\"");
+                                        throw new InitializationException("Invalid Magic Sign: \"" + s.getLine(1) + "\"", b.getLocation());
                                     }
                                 } catch(IllegalArgumentException e) {
-                                throw new InitializationException("Invalid Block Data on sign: \"" + s.getLine(2) + s.getLine(3) + "\"");
+                                    throw new InitializationException("Invalid Block Data on sign: \"" + s.getLine(2) + s.getLine(3) + "\"", b.getLocation());
                                 }
                             }
                         }
+                    } catch(StringIndexOutOfBoundsException e) {
+                        throw new InitializationException("Invalid sign.", b.getLocation());
+                    }
                     StructureContainedBlock block = new StructureContainedBlock(x, y, z, useState ? state : null, d, requirement, pull, pullOffset);
                     if(state instanceof BlockInventoryHolder) {
                         inventories.add(new StructureContainedInventory(((BlockInventoryHolder) state).getInventory(), block));
@@ -122,7 +126,7 @@ public class Structure implements Serializable {
                 }
             }
         }
-        if(centerX < 0 || centerZ < 0) throw new InitializationException("No structure center specified.");
+        if(centerX < 0 || centerZ < 0) throw new InitializationException("No structure center specified.", null);
         structureInfo = new StructureInfo(l2.getBlockX()-l1.getBlockX()+1, l2.getBlockY()-l1.getBlockY()+1, l2.getBlockZ()-l1.getBlockZ()+1, new Vector2(centerX, centerZ));
     }