feat/chore: rewrite git with job and some other fixes (#743)

* feat/chore: rewrite git with job and some other fixes

* fix: fs clear window, rename echo_warning -> warn

also fix renaming and add an event blocker to avoid running many events
at the same time

lua/nvim-tree/git/utils.lua

@@ -0,0 +1,54 @@
+local M = {}
+
+function M.get_toplevel(cwd)
+  local cmd = "git -C " .. vim.fn.shellescape(cwd) .. " rev-parse --show-toplevel"
+  local toplevel = vim.fn.system(cmd)
+
+  if not toplevel or #toplevel == 0 or toplevel:match('fatal') then
+    return nil
+  end
+
+  -- git always returns path with forward slashes
+  if vim.fn.has('win32') == 1 then
+    toplevel = toplevel:gsub("/", "\\")
+  end
+
+  -- remove newline
+  return toplevel:sub(0, -2)
+end
+
+local untracked = {}
+
+function M.should_show_untracked(cwd)
+  if untracked[cwd] ~= nil then
+    return untracked[cwd]
+  end
+
+  local cmd = "git -C "..cwd.." config --type=bool status.showUntrackedFiles"
+  local has_untracked = vim.fn.system(cmd)
+  untracked[cwd] = vim.trim(has_untracked) ~= 'false'
+  return untracked[cwd]
+end
+
+function M.file_status_to_dir_status(status, cwd)
+  local dirs = {}
+  for p, s in pairs(status) do
+    if s ~= '!!' then
+      local modified = vim.fn.fnamemodify(p, ':h')
+      dirs[modified] = 'dirty'
+    end
+  end
+
+  for dirname, _ in pairs(dirs) do
+    local modified = dirname
+    while modified ~= cwd and modified ~= '/' do
+      modified = vim.fn.fnamemodify(modified, ':h')
+      dirs[modified] = 'dirty'
+    end
+  end
+
+  return dirs
+end
+
+return M
+