add Telescope live_grep on Git root

Author: slara

init.lua

@@ -308,6 +308,40 @@ require('telescope').setup {
 -- Enable telescope fzf native, if installed
 pcall(require('telescope').load_extension, 'fzf')
 
+-- Telescope live_grep in git root
+-- Function to find the git root directory based on the current buffer's path
+local function find_git_root()
+  -- Use the current buffer's path as the starting point for the git search
+  local current_file = vim.api.nvim_buf_get_name(0)
+  -- If the buffer is not associated with a file, return nil
+  if current_file == "" then
+    print("Buffer is not associated with a file")
+    return nil
+  end
+  -- Extract the directory from the current file's path
+  local current_dir = vim.fn.fnamemodify(current_file, ":h")
+  -- Find the Git root directory from the current file's path
+  print("git -C " .. vim.fn.escape(current_dir, " ") .. " rev-parse --show-toplevel")
+  local git_root = vim.fn.systemlist("git -C " .. vim.fn.escape(current_dir, " ") .. " rev-parse --show-toplevel")[1]
+  if vim.v.shell_error ~= 0 then
+    print("Not a git repository")
+    return nil
+  end
+  return git_root
+end
+
+-- Custom live_grep function to search in git root
+local function live_grep_git_root()
+  local git_root = find_git_root()
+  if git_root then
+    require('telescope.builtin').live_grep({
+      search_dirs = {git_root},
+    })
+  end
+end
+
+vim.api.nvim_create_user_command('LiveGrepGitRoot', live_grep_git_root, {})
+
 -- See `:help telescope.builtin`
 vim.keymap.set('n', '<leader>?', require('telescope.builtin').oldfiles, { desc = '[?] Find recently opened files' })
 vim.keymap.set('n', '<leader><space>', require('telescope.builtin').buffers, { desc = '[ ] Find existing buffers' })
@@ -323,7 +357,8 @@ vim.keymap.set('n', '<leader>gf', require('telescope.builtin').git_files, { desc
 vim.keymap.set('n', '<leader>sf', require('telescope.builtin').find_files, { desc = '[S]earch [F]iles' })
 vim.keymap.set('n', '<leader>sh', require('telescope.builtin').help_tags, { desc = '[S]earch [H]elp' })
 vim.keymap.set('n', '<leader>sw', require('telescope.builtin').grep_string, { desc = '[S]earch current [W]ord' })
-vim.keymap.set('n', '<leader>sg', require('telescope.builtin').live_grep, { desc = '[S]earch by [G]rep' })
+vim.keymap.set('n', '<leader>sG', require('telescope.builtin').live_grep, { desc = '[S]earch by [G]rep' })
+vim.keymap.set('n', '<leader>sg', ':LiveGrepGitRoot<cr>', { desc = '[S]earch by [G]rep on Git Root' })
 vim.keymap.set('n', '<leader>sd', require('telescope.builtin').diagnostics, { desc = '[S]earch [D]iagnostics' })
 vim.keymap.set('n', '<leader>sr', require('telescope.builtin').resume, { desc = '[S]earch [R]esume' })