navigation-file 1

config/linux-dev/nvim/lua/custom/navigation.lua

@@ -0,0 +1,162 @@
+vim.keymap.set('n', '<leader>f', function()
+  vim.cmd('FuzzyLive')
+end, { desc = 'Open fuzzy file finder' })
+
+-- Minimal realtime fuzzy finder in pure Neovim Lua (no plugins)
+local Fuzzy = {}
+
+function Fuzzy.open()
+  if Fuzzy.active then
+    Fuzzy.close()
+  end
+  Fuzzy.active = true
+
+  -- Collect all files once (cached for speed)
+  Fuzzy.files = vim.fn.globpath('.', '**/*', 0, 1)
+  Fuzzy.matches = Fuzzy.files
+  Fuzzy.cursor = 1
+
+  -- Create input and result buffers
+  Fuzzy.input_buf = vim.api.nvim_create_buf(false, true)
+  Fuzzy.result_buf = vim.api.nvim_create_buf(false, true)
+
+  -- Floating window sizes
+  local width = math.floor(vim.o.columns * 0.6)
+  local height = 15
+  local row = math.floor((vim.o.lines - height) / 2)
+  local col = math.floor((vim.o.columns - width) / 2)
+
+  -- Input window (top)
+  Fuzzy.input_win = vim.api.nvim_open_win(Fuzzy.input_buf, true, {
+    relative = 'editor',
+    row = row,
+    col = col,
+    width = width,
+    height = 1,
+    style = 'minimal',
+    border = 'rounded',
+  })
+  vim.api.nvim_buf_set_option(Fuzzy.input_buf, 'buftype', 'prompt')
+  vim.fn.prompt_setprompt(Fuzzy.input_buf, 'Search: ')
+
+  -- Results window (below)
+  Fuzzy.result_win = vim.api.nvim_open_win(Fuzzy.result_buf, false, {
+    relative = 'editor',
+    row = row + 2,
+    col = col,
+    width = width,
+    height = height - 2,
+    style = 'minimal',
+    border = 'single',
+  })
+
+  -- Draw initial result list
+  Fuzzy:update_results('')
+
+  ------------------------------------------------------------------
+  -- 🟢 Real-time fuzzy filtering
+  ------------------------------------------------------------------
+  vim.api.nvim_create_autocmd({ 'TextChangedI', 'TextChangedP' }, {
+    buffer = Fuzzy.input_buf,
+    callback = function()
+      local text = vim.fn.getline('.')
+      text = text:gsub('^Search:%s*', '')
+      Fuzzy:update_results(text)
+    end,
+  })
+
+  ------------------------------------------------------------------
+  -- 🟢 Keybindings in input window
+  ------------------------------------------------------------------
+  vim.keymap.set('i', '<C-n>', function()
+    if not Fuzzy.matches or #Fuzzy.matches == 0 then
+      return
+    end
+    Fuzzy.cursor = math.min(Fuzzy.cursor + 1, #Fuzzy.matches)
+    Fuzzy:highlight_selection()
+  end, { buffer = Fuzzy.input_buf })
+
+  vim.keymap.set('i', '<C-p>', function()
+    if not Fuzzy.matches or #Fuzzy.matches == 0 then
+      return
+    end
+    Fuzzy.cursor = math.max(Fuzzy.cursor - 1, 1)
+    Fuzzy:highlight_selection()
+  end, { buffer = Fuzzy.input_buf })
+
+  vim.keymap.set('i', '<CR>', function()
+    local choice = Fuzzy.matches[Fuzzy.cursor]
+    if choice then
+      Fuzzy.close()
+      vim.cmd('edit ' .. vim.fn.fnameescape(choice))
+    end
+  end, { buffer = Fuzzy.input_buf })
+
+  vim.keymap.set('i', '<Esc>', function()
+    Fuzzy.close()
+  end, { buffer = Fuzzy.input_buf })
+
+  vim.cmd('startinsert')
+end
+
+--------------------------------------------------------------------
+-- 🔵 Core update + display logic
+--------------------------------------------------------------------
+function Fuzzy:update_results(text)
+  if text == '' then
+    Fuzzy.matches = Fuzzy.files
+  else
+    Fuzzy.matches = vim.fn.matchfuzzy(Fuzzy.files, text)
+  end
+
+  if #Fuzzy.matches == 0 then
+    vim.api.nvim_buf_set_lines(Fuzzy.result_buf, 0, -1, false, { '-- no matches --' })
+    Fuzzy.cursor = 1
+    return
+  end
+
+  -- Limit to first 50 results for performance
+  local display = {}
+  for i = 1, math.min(#Fuzzy.matches, 50) do
+    table.insert(display, Fuzzy.matches[i])
+  end
+
+  vim.api.nvim_buf_set_lines(Fuzzy.result_buf, 0, -1, false, display)
+  Fuzzy.cursor = 1
+  Fuzzy:highlight_selection()
+end
+
+--------------------------------------------------------------------
+-- 🔵 Highlight the selected file
+--------------------------------------------------------------------
+function Fuzzy:highlight_selection()
+  if not Fuzzy.result_buf then
+    return
+  end
+  vim.api.nvim_buf_clear_namespace(Fuzzy.result_buf, 0, 0, -1)
+  if Fuzzy.matches and Fuzzy.matches[Fuzzy.cursor] then
+    vim.api.nvim_buf_add_highlight(Fuzzy.result_buf, 0, 'Visual', Fuzzy.cursor - 1, 0, -1)
+  end
+end
+
+--------------------------------------------------------------------
+-- 🔴 Clean up
+--------------------------------------------------------------------
+function Fuzzy.close()
+  if Fuzzy.input_win and vim.api.nvim_win_is_valid(Fuzzy.input_win) then
+    vim.api.nvim_win_close(Fuzzy.input_win, true)
+  end
+  if Fuzzy.result_win and vim.api.nvim_win_is_valid(Fuzzy.result_win) then
+    vim.api.nvim_win_close(Fuzzy.result_win, true)
+  end
+  Fuzzy.active = false
+end
+
+--------------------------------------------------------------------
+-- 🧩 Command to launch
+--------------------------------------------------------------------
+vim.api.nvim_create_user_command('FuzzyLive', function()
+  Fuzzy.open()
+end, {})
+
+return Fuzzy