Load JSON via custom editor menu item

Unity Engine
1

Hi there,

I’m trying to load a .json file via a custom menu item in the unity editor, and have pretty much fallen at the first hurdle.
I have got as far as opening a file dialog, and getting the path of the json file I want to open, but that’s about it:

[MenuItem ("Custom/Load Map")]
    static void start(){
string path = EditorUtility.OpenFilePanel (
            "Load Map",
            "",
            "json");
                if (path.Length != 0) {
                        WWW www = new WWW ("file:///" + path);
            Debug.Log (path);
            Debug.Log (www)
}
}

I’m just stuck as to where to go from here, I found the following tutorial:
http://blog.paultondeur.com/2010/03/23/tutorial-loading-and-parsing-external-xml-and-json-files-with-unity-part-2-json/

but I can’t get this to be called from the menu item, I think this comes down to my relative lack of experience, and the difference between scripts which are called at runtime, and those that are called by the editor…

A few pointers would be very welcome,

Thanks

2

Fast forward about ten years later I saw your post and thought it would be useful to answer this for future readers:

    public void Apply()
    {
#if UNITY_EDITOR
            string path =  UnityEditor.EditorUtility.OpenFilePanel("your file", "", "txt");
            if (path.Length != 0)
            {
                StartCoroutine(UploadData(path));
            }
#endif
    }

    IEnumerator UploadData(string path)
    {
        // This is where the data will be stored.
        string s;

        // When you use "using" it "disposes" data when you go out of the "using" block and frees  up the memory
        using (UnityWebRequest data = new UnityWebRequest(path, UnityWebRequest.kHttpVerbGET))
        {
            //A "downloader" for texts would do the job
            data.downloadHandler = new DownloadHandlerBuffer();

            // downloader sends requests to download the file and stops when the entire data is downloaded
            yield return data.SendWebRequest();

            //The text can be accessed using the downloader, you can use it for images sounds, and whatnot
            s = ((DownloadHandlerBuffer)data.downloadHandler).text;
        }
        Foo(s); // do whatever you want with the downloaded text file here
    }
3

Why even using a UnityWebRequest or WWW? We’re inside the editor using a local filepath. So reading the content of a local file would be just

        [MenuItem ("Custom/Load Map")]
        static void LoadMap()
        {
            string path = EditorUtility.OpenFilePanel ("Load Map", "", "json");
            if (string.IsNullOrEmpty(path))
                return;
            string content = System.IO.File.ReadAllText(path);
            // do something with the file content. Since it's about json, probably parse the json.
        }