From 037f59d0dffde531090c32b3c4676fca07c1ec11 Mon Sep 17 00:00:00 2001
From: Martin Hardorf <izzi1986@gmail.com>
Date: Thu, 23 Jul 2015 13:10:59 +0200
Subject: [PATCH] Add support for specifying configuration file in maven plugin

---
 .../swagger/codegen/plugin/CodeGenMojo.java   | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/modules/swagger-codegen-maven-plugin/src/main/java/io/swagger/codegen/plugin/CodeGenMojo.java b/modules/swagger-codegen-maven-plugin/src/main/java/io/swagger/codegen/plugin/CodeGenMojo.java
index 26b6fef1135..812be6981d4 100644
--- a/modules/swagger-codegen-maven-plugin/src/main/java/io/swagger/codegen/plugin/CodeGenMojo.java
+++ b/modules/swagger-codegen-maven-plugin/src/main/java/io/swagger/codegen/plugin/CodeGenMojo.java
@@ -16,12 +16,14 @@
  * limitations under the License.
  */
 
+import io.swagger.codegen.CliOption;
 import io.swagger.codegen.ClientOptInput;
 import io.swagger.codegen.ClientOpts;
 import io.swagger.codegen.CodegenConfig;
 import io.swagger.codegen.DefaultGenerator;
 import io.swagger.models.Swagger;
 import io.swagger.parser.SwaggerParser;
+
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
@@ -29,6 +31,9 @@
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.project.MavenProject;
 
+import config.Config;
+import config.ConfigParser;
+
 import java.io.File;
 import java.util.ServiceLoader;
 
@@ -66,6 +71,12 @@ public class CodeGenMojo extends AbstractMojo {
     @Parameter(name = "language", required = true)
     private String language;
 
+    /**
+     * Path to json configuration file.
+     */
+    @Parameter(name = "configurationFile", required = false)
+    private String configurationFile;
+
 
     /**
      * Add the output directory to the project as a source root, so that the
@@ -90,7 +101,20 @@ public void execute() throws MojoExecutionException {
         if (null != templateDirectory) {
             config.additionalProperties().put(TEMPLATE_DIR_PARAM, templateDirectory.getAbsolutePath());
         }
-
+        
+        if (null != configurationFile) {
+            Config genConfig = ConfigParser.read(configurationFile);
+            if (null != genConfig) {
+                for (CliOption langCliOption : config.cliOptions()) {
+                    if (genConfig.hasOption(langCliOption.getOpt())) {
+                        config.additionalProperties().put(langCliOption.getOpt(), genConfig.getOption(langCliOption.getOpt()));
+                    }
+                }
+            } else {
+            	throw new RuntimeException("Unable to read configuration file");
+            }
+        }
+        
         ClientOptInput input = new ClientOptInput().opts(new ClientOpts()).swagger(swagger);
         input.setConfig(config);
         new DefaultGenerator().opts(input).generate();