Is below line OK ?

char *{{classname}}Array[] = { "NULL"{{#allowableValues}}{{#values}}, "{{.}}"{{/values}}{{/allowableValues}} };

Sorry I don't have a Swagger doc with enum values, so I cannot try it.

The line you suggest is not correct. It does not add comma in between values.

With the current line last we get comma in between:

{ "NULL"{{#allowableValues}}, {{#values}}"{{.}}"{{^-last}},{{/-last}}{{/values}}{{/allowableValues}} };
 char* statusArray[] =  { "NULL", "available-t1","pending-t2","sold-t3" };

If we remove the ^last tag , then it does not add a comma in between values.

{ "NULL"{{#allowableValues}}{{#values}}, "{{.}}"{{/values}}{{/allowableValues}} };
char* statusArray[] =  { "NULL", "available-t1""pending-t2""sold-t3" };

Snippet from debug logs how it looks:

      "allowableValues" : {
        "enumVars" : [ {
          "name" : "AVAILABLET1",
          "isString" : false,
          "value" : "available_t1"
        }, {
          "name" : "PENDINGT2",
          "isString" : false,
          "value" : "pending_t2"
        }, {
          "name" : "SOLDT3",
          "isString" : false,
          "value" : "sold_t3"
        } ],
        "values" : [ "available-t1", "pending-t2", "sold-t3" ]
      },

btw you can use this doc for trying as well: https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml

You will have to update enum on line 719 to following:

enum:            
  - available-t1            
  - pending-t2            
  - sold-t3

You can check pet.c for generated enum's.

Thanks @zhemant

I tried

char *{{classname}}Array[] = { "NULL"{{#allowableValues}}{{#values}}, "{{.}}"{{/values}}{{/allowableValues}} };

with https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml (adding "-" to enum values)

And got the right generated code:

char *statusArray[] =  { "NULL", "available-t1", "pending-t2", "sold-t3" };

So I think my proposal is OK too.

BTW: do you want to change

modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache

too ? It has the same code for enum type.

weird, I will try again to generate with your suggestion.

Yes, I will update the enum in api-body as well.

@ityuhui I apologise for before, I tried with wrong syntax. I tried { "NULL"{{#allowableValues}},{{#values}}"{{.}}"{{/values}}{{/allowableValues}} }; instead of { "NULL"{{#allowableValues}}{{#values}}, "{{.}}"{{/values}}{{/allowableValues}} };
I am also able to generate same result as you now.
I have updated it now in body and API mustache

Awesome!
and could you please tell me how to get the debug log ? e.g.

      "allowableValues" : {
        "enumVars" : [ {
          "name" : "AVAILABLET1",
          "isString" : false,
          "value" : "available_t1"
        }, {
          "name" : "PENDINGT2",
          "isString" : false,
          "value" : "pending_t2"
        }, {
          "name" : "SOLDT3",
          "isString" : false,
          "value" : "sold_t3"
        } ],
        "values" : [ "available-t1", "pending-t2", "sold-t3" ]
      },

It's very helpful for template code.

Sure. I use the following command to generate debug logs for Models and push them into a file for analysis:

java -DdebugModels -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g c -o out/pet-new --enable-post-process-file  > out/pet.txt

You can replace -DdebugModels with -DdebugOperations and other flags.

-DdebugModels is for printing template logs for all models
-DdebugOperations is for printing template logs for all API's

You can find more debug flags here: https://github.com/openapitools/openapi-generator/wiki/FAQ#how-to-debug-openapi-generator.

I hope this is what you were looking for.

That is exactly what I want. Thank you very much !