feat(root): cached pretty path function for statuslines

lua/lazyvim/plugins/ui.lua

@@ -138,9 +138,10 @@ return {
               },
             },
             { "filetype", icon_only = true, separator = "", padding = { left = 1, right = 0 } },
-            { "filename", path = 1, symbols = { modified = "  ", readonly = "", unnamed = "" } },
-            -- stylua: ignore
             {
+              function()
+                return Util.root.pretty_path()
+              end,
             },
           },
           lualine_x = {

lua/lazyvim/util/root.lua

@@ -144,4 +144,38 @@ function M.get()
   return roots[1] and roots[1].paths[1] or vim.loop.cwd()
 end
 
+M.pretty_cache = {} ---@type table<string, string>
+function M.pretty_path()
+  local path = vim.fn.expand("%:p") --[[@as string]]
+  if path == "" then
+    return ""
+  end
+
+  path = Util.norm(path)
+  if M.pretty_cache[path] then
+    return M.pretty_cache[path]
+  end
+  local cache_key = path
+  local cwd = M.realpath(vim.loop.cwd()) or ""
+
+  if path:find(cwd, 1, true) == 1 then
+    path = path:sub(#cwd + 2)
+  else
+    local roots = M.detect({ spec = { ".git" } })
+    local root = roots[1] and roots[1].paths[1] or nil
+    if root then
+      path = path:sub(#vim.fs.dirname(root) + 2)
+    end
+  end
+
+  local sep = package.config:sub(1, 1)
+  local parts = vim.split(path, "[\\/]")
+  if #parts > 3 then
+    parts = { parts[1], "…", parts[#parts - 1], parts[#parts] }
+  end
+  local ret = table.concat(parts, sep)
+  M.pretty_cache[cache_key] = ret
+  return ret
+end
+
 return M