Get simple rg example to work

lua/telescope/finders.lua

@@ -0,0 +1,84 @@
+local a = vim.api
+
+local finders = {}
+
+local Finder = {}
+Finder.__index = Finder
+
+--- Create a new finder command
+---
+--@param fn_command function The function to call
+function Finder:new(opts)
+  opts = opts or {}
+
+  -- TODO: Add config for:
+  --        - cwd
+
+  -- TODO:
+  -- - `types`
+  --    job
+  --    pipe
+  --        vim.loop.new_pipe (stdin / stdout). stdout => filter pipe
+  --        rg huge_search | fzf --filter prompt_is > buffer. buffer could do stuff do w/ preview callback
+  --    string
+  --    list
+  --    ...
+  return setmetatable({
+    fn_command = opts.fn_command,
+    responsive = opts.responsive,
+    job_id = -1,
+  }, Finder)
+end
+
+function Finder:get_results(win, bufnr, prompt)
+  if self.job_id > 0 then
+    -- Make sure we kill old jobs.
+    vim.fn.jobstop(self.job_id)
+  end
+
+  self.job_id = vim.fn.jobstart(self.fn_command(prompt), {
+    -- TODO: Decide if we want this or don't want this.
+    stdout_buffered = true,
+
+    on_stdout = function(_, data, _)
+      a.nvim_buf_set_lines(bufnr, -1, -1, false, data)
+    end,
+
+    on_exit = function()
+      -- TODO: Add possibility to easily highlight prompt within buffer
+      -- without having to do weird stuff and with it actually working...
+      if false then
+        vim.fn.matchadd("Type", "\\<" .. prompt .. "\\>", 1, -1, {window = win})
+      end
+    end,
+  })
+
+  --[[
+  local function get_rg_results(bufnr, search_string)
+    local start_time = vim.fn.reltime()
+
+    vim.fn.jobstart(string.format('rg %s', search_string), {
+      cwd = '/home/tj/build/neovim',
+
+      on_stdout = function(job_id, data, event)
+        vim.api.nvim_buf_set_lines(bufnr, -1, -1, false, data)
+      end,
+
+      on_exit = function()
+        print("Finished in: ", vim.fn.reltimestr(vim.fn.reltime(start_time)))
+      end,
+
+      stdout_buffer = true,
+    })
+  end
+  --]]
+end
+
+--- Return a new Finder
+--
+--@return Finder
+finders.new = function(...)
+  return Finder:new(...)
+end
+
+return finders