added template variable

src/main/java/com/wordnik/swagger/codegen/Codegen.java

@@ -14,6 +14,7 @@ public class Codegen extends DefaultGenerator {
     options.addOption("l", "lang", true, "client language to generate");
     options.addOption("o", "output", true, "where to write the generated files");
     options.addOption("i", "input-spec", true, "location of the swagger spec, as URL or file");
+    options.addOption("t", "template-dir", true, "folder containing the template files");
 
     ClientOptInput codegenInput = new ClientOptInput();
     ClientOpts clientArgs = new ClientOpts();
@@ -29,10 +30,16 @@ public class Codegen extends DefaultGenerator {
         codegenInput.getConfig().setOutputDir(cmd.getOptionValue("o"));
       if (cmd.hasOption("i"))
         swagger = new SwaggerLoader().read(cmd.getOptionValue("i"));
-
+      if (cmd.hasOption("t"))
+        clientArgs.getProperties().put("templateDir",
+          String.valueOf(cmd.getOptionValue("t")));
+      if (cmd.hasOption("h")) {
+        usage(options);
+        return;
+      }
     }
     catch (Exception e) {
-      e.printStackTrace();
+      usage(options);
       return;
     }
 
@@ -40,7 +47,6 @@ public class Codegen extends DefaultGenerator {
       codegenInput
         .opts(clientArgs)
         .swagger(swagger);
-
       new Codegen().opts(codegenInput).generate();
     }
     catch (Exception e) {
@@ -48,6 +54,11 @@ public class Codegen extends DefaultGenerator {
     }
   }
 
+  static void usage(Options options) {
+    HelpFormatter formatter = new HelpFormatter();
+    formatter.printHelp( "Codegen", options );
+  }
+
   static CodegenConfig getConfig(String name) {
     if("objc".equals(name))
       return new ObjcClientCodegen();

src/main/java/com/wordnik/swagger/codegen/CodegenConfig.java

@@ -20,6 +20,7 @@ public interface CodegenConfig {
   String escapeReservedWord(String name);
   String getTypeDeclaration(Property p);
   String getTypeDeclaration(String name);
+  void processOpts();
 
   Set<String> reservedWords();
 

src/main/java/com/wordnik/swagger/codegen/DefaultCodegen.java

@@ -22,6 +22,12 @@ public class DefaultCodegen {
   protected Map<String, Object> additionalProperties = new HashMap<String, Object>();
   protected List<SupportingFile> supportingFiles = new ArrayList<SupportingFile>();
 
+  public void processOpts(){
+    if(additionalProperties.containsKey("templateDir")) {
+      this.setTemplateDir((String)additionalProperties.get("templateDir"));
+    }
+  }
+
   // override with any special post-processing
   public Map<String, Object> postProcessModels(Map<String, Object> objs) {
     return objs;
@@ -214,10 +220,8 @@ public class DefaultCodegen {
       String inner = getSwaggerType(ap.getItems());
       return "new ArrayList<" + inner + ">() ";
     }
-    else {
-      // System.out.println("unhandled property default value");
+    else
       return "null";
-    }
   }
 
   /**

src/main/java/com/wordnik/swagger/codegen/DefaultGenerator.java

@@ -32,6 +32,7 @@ public class DefaultGenerator implements Generator {
       throw new RuntimeException("missing swagger input or config!");
     }
     try {
+      config.processOpts();
       Map<String, Object> models = null;
       Map<String, Object> operations = null;