Neovim: Konfiguration für die Statusline hinzugefügt

1 files changed, 165 insertions, 0 deletions

diff --git a/nvim/lua/config/statusline.lua b/nvim/lua/config/statusline.lua
new file mode 100644
index 0000000..fb89a66
--- /dev/null
+++ b/nvim/lua/config/statusline.lua
@@ -0,0 +1,165 @@
+local M = {}
+
+local modes = {
+  n     = { "NORMAL", "StatuslineModeNormal" },
+  i     = { "INSERT", "StatuslineModeInsert" },
+  v     = { "VISUAL", "StatuslineModeVisual" },
+  V     = { "V-LINE", "StatuslineModeVisual" },
+  [""] = { "V-BLOCK", "StatuslineModeVisual" },
+  R     = { "REPLACE", "StatuslineModeReplace" },
+  c     = { "COMMAND", "StatuslineModeCommand" },
+}
+
+local function mode()
+  local m = vim.fn.mode()
+  local entry = modes[m] or { m, "StatusLine" }
+  return string.format("%%#%s# %s %%#StatusLine#", entry[2], entry[1])
+end
+
+----------------------------------------------------------------------
+-- Git branch (buffer-lokal, gecached, kein redraw-spam)
+----------------------------------------------------------------------
+
+local function update_git_branch(bufnr)
+  bufnr = bufnr or 0
+
+  -- nur in echten Dateien
+  if vim.bo[bufnr].buftype ~= "" then
+    vim.b[bufnr].git_branch = ""
+    return
+  end
+
+  -- kein Git → nichts tun
+  if vim.fn.executable("git") ~= 1 then
+    vim.b[bufnr].git_branch = ""
+    return
+  end
+
+  local branch = vim.fn.systemlist(
+    "git rev-parse --abbrev-ref HEAD 2>/dev/null"
+  )[1]
+
+  if branch and branch ~= "" then
+    vim.b[bufnr].git_branch = "  " .. branch .. " "
+  else
+    vim.b[bufnr].git_branch = ""
+  end
+end
+
+----------------------------------------------------------------------
+-- Autocmd: Git nur bei Bedarf aktualisieren
+----------------------------------------------------------------------
+
+vim.api.nvim_create_autocmd(
+  { "BufEnter", "FocusGained" },
+  {
+    callback = function(args)
+      update_git_branch(args.buf)
+    end,
+  }
+)
+
+----------------------------------------------------------------------
+-- Statusline-Sektionen (reine Darstellung, keine IO)
+----------------------------------------------------------------------
+
+local function git()
+  return vim.b.git_branch or ""
+end
+
+local function git_diff()
+  local gsd = vim.b.gitsigns_status_dict
+  if not gsd then return "" end
+
+  local parts = {}
+  if gsd.added and gsd.added > 0 then table.insert(parts, "+" .. gsd.added) end
+  if gsd.changed and gsd.changed > 0 then table.insert(parts, "~" .. gsd.changed) end
+  if gsd.removed and gsd.removed > 0 then table.insert(parts, "-" .. gsd.removed) end
+
+  if #parts > 0 then
+    return " " .. table.concat(parts, " ") .. " "
+  end
+
+  return ""
+end
+
+local function filename()
+  local name = vim.fn.expand("%:t")
+  if name == "" then
+    name = "[No Name]"
+  end
+
+  if vim.bo.modified then
+    name = name .. " [+]"
+  end
+
+  return " " .. name .. " "
+end
+
+local function treesitter()
+  local ok = vim.treesitter.highlighter.active[vim.api.nvim_get_current_buf()]
+  if ok then
+    return " 🌳 "
+  end
+  return ""
+end
+
+local function diagnostics()
+  local counts = {
+    error = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.ERROR }),
+    warn  = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.WARN }),
+    info  = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.INFO }),
+    hint  = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.HINT }),
+  }
+
+  local parts = {}
+
+  if counts.error > 0 then table.insert(parts, "  " .. counts.error) end
+  if counts.warn > 0 then table.insert(parts, "  " .. counts.warn) end
+  if counts.info > 0 then table.insert(parts, "  " .. counts.info) end
+  if counts.hint > 0 then table.insert(parts, "  " .. counts.hint) end
+
+  if #parts > 0 then
+    return " " .. table.concat(parts, " ") .. " "
+  end
+
+  return ""
+end
+
+local function fileinfo()
+  local ft = vim.bo.filetype ~= "" and vim.bo.filetype or "none"
+  local enc = vim.bo.fileencoding ~= "" and vim.bo.fileencoding or vim.o.encoding
+  return string.format(" %s %s ", ft, enc)
+end
+
+local function position()
+  return string.format(" %d:%d ", vim.fn.line("."), vim.fn.col("."))
+end
+
+----------------------------------------------------------------------
+-- Öffentliche Statusline-Funktion
+----------------------------------------------------------------------
+
+function M.statusline()
+  return table.concat({
+    -- LEFT: Mode & Context
+    mode(),
+    "%#PmenuSel#",
+    git(),
+    git_diff(),
+    "%#StatusLine#",
+    filename(),
+
+    "%=",
+
+    -- RIGHT: Feedback & Meta
+    diagnostics(),
+    treesitter(),
+    "%#StatusLineNC#",
+    fileinfo(),
+    " %p%% ",
+    position(),
+  })
+end
+
+return M