Is it possible to store the current colorscheme into a session?

Question

As title. I have to use some colorscheme to make my reading experience better on certain filetype. I have made an auto session plugin myself but I don't know how to store the colorscheme info I'm currently on into it. Is there any native way for doing so?

My trying: The following are the only two lines that might be related to what will be stored into the session:

vim.opt.ssop:append({ 'localoptions', 'globals' })
vim.opt.ssop:remove({ 'buffers' })

As I assumed colorscheme is some global variable. But by grepping inside the session file created, I didn't find any string colorscheme.

Might not be related, but I'm using NeoVim.

Answer 1

So, I just made a post on another forum and got some practical advice there, and finally achieved the feature I want and added it to my plugin. Here is how I did that:

1. Let me quote a part of the advice first:

   I use a session manager known as possession. Possession lets me saves the session data in a json file and allows me to save custom data as well. It also provides hooks to [...]

2. So here is a part of my implementation: (For simplicity, only posting write process here)

   1. These are some utils to abstract the json-write process:

   local function write_to_project_json(data)
     if type(data) ~= 'table' then return false end
     local fp = io.open(get_project_json_path(), 'w+')
     if not fp then return false end
     fp:write(vim.json.encode(data))
     fp:close()
     return true
   end
   

   2. Then you can do something like this:

   -- store data
   local succeed, data = get_or_create_project_file_data()
   if succeed and type(data) == 'table' then
     data.colors_name = vim.g.colors_name
     write_to_project_json(data)
   end