Add coc basic config, not fully working yet

nvim-coc/lua/utils.lua

@@ -0,0 +1,55 @@
+-- taken from https://github.com/ibhagwan/nvim-lua
+
+local M = {}
+
+M.opts = function(desc)
+    if desc then
+        return { silent = true, desc = desc}
+    else
+        return { silent = true }
+    end
+end
+
+M.sudo_exec = function(cmd, print_output)
+    vim.fn.inputsave()
+    local password = vim.fn.inputsecret("Password: ")
+    vim.fn.inputrestore()
+    if not password or #password == 0 then
+        print("Invalid password, sudo aborted")
+        return false
+    end
+    local out = vim.fn.system(string.format("sudo -p '' -S %s", cmd), password)
+    if vim.v.shell_error ~= 0 then
+        print("\r\n")
+        print(out)
+        return false
+    end
+    if print_output then print("\r\n", out) end
+    return true
+end
+
+M.sudo_write = function(tmpfile, filepath)
+    if not tmpfile then tmpfile = vim.fn.tempname() end
+    if not filepath then filepath = vim.fn.expand("%") end
+    if not filepath or #filepath == 0 then
+        print("E32: No file name")
+        return
+    end
+    -- `bs=1048576` is equivalent to `bs=1M` for GNU dd or `bs=1m` for BSD dd
+    -- Both `bs=1M` and `bs=1m` are non-POSIX
+    local cmd = string.format("dd if=%s of=%s bs=1048576",
+    vim.fn.shellescape(tmpfile),
+    vim.fn.shellescape(filepath))
+    -- no need to check error as this fails the entire function
+    vim.api.nvim_exec(string.format("write! %s", tmpfile), true)
+    if M.sudo_exec(cmd) then
+        -- refreshes the buffer and prints the "written" message
+        vim.cmd.checktime()
+        -- exit command mode
+        vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(
+        "<Esc>", true, false, true), "n", true)
+    end
+    vim.fn.delete(tmpfile)
+end
+
+return M