Squashed '.config/nvim/' content from commit f63391e

git-subtree-dir: .config/nvim
git-subtree-split: f63391eac31d51b5bab84456b6900fdb3b46a285

1 files changed, 85 insertions, 0 deletions

diff --git a/lua/user/utils.lua b/lua/user/utils.lua
new file mode 100644
index 0000000..bfb5faa
--- /dev/null
+++ b/lua/user/utils.lua
@@ -0,0 +1,85 @@
+local fn = vim.fn
+
+local M = {}
+
+function M.executable(name)
+  if fn.executable(name) > 0 then
+    return true
+  end
+
+  return false
+end
+
+--- check whether a feature exists in Nvim
+--- @feat: string
+---   the feature name, like `nvim-0.7` or `unix`.
+--- return: bool
+M.has = function(feat)
+  if fn.has(feat) == 1 then
+    return true
+  end
+
+  return false
+end
+
+--- Create a dir if it does not exist
+function M.may_create_dir(dir)
+  local res = fn.isdirectory(dir)
+
+  if res == 0 then
+    fn.mkdir(dir, "p")
+  end
+end
+
+M['unload_lua_namespace'] = function(prefix)
+  local prefix_with_dot = prefix .. '.'
+  for key, value in pairs(package.loaded) do
+    if key == prefix or key:sub(1, #prefix_with_dot) == prefix_with_dot then
+      package.loaded[key] = nil
+    end
+  end
+end
+
+-- toggle cmp completion
+vim.g.cmp_toggle_flag = false -- initialize
+local normal_buftype = function()
+  return vim.api.nvim_buf_get_option(0, "buftype") ~= "prompt"
+end
+M.toggle_completion = function()
+  local ok, cmp = pcall(require, "cmp")
+  if ok then
+    local next_cmp_toggle_flag = not vim.g.cmp_toggle_flag
+    if next_cmp_toggle_flag then
+      print("completion on")
+    else
+      print("completion off")
+    end
+    cmp.setup({
+      enabled = function()
+        vim.g.cmp_toggle_flag = next_cmp_toggle_flag
+        if next_cmp_toggle_flag then
+          return normal_buftype
+        else
+          return next_cmp_toggle_flag
+        end
+      end,
+    })
+  else
+    print("completion not available")
+  end
+end
+
+function M.get_nvim_version()
+  local actual_ver = vim.version()
+
+  local nvim_ver_str = string.format("%d.%d.%d", actual_ver.major, actual_ver.minor, actual_ver.patch)
+  return nvim_ver_str
+end
+
+function M.add_pack(name)
+  local status, error = pcall(vim.cmd, "packadd " .. name)
+
+  return status
+end
+
+return M