feat (sidebar) nvim-web-devicons support files with multiple dots and use default for unknown file types. (#943)

lua/avante/utils/file.lua

@@ -1,4 +1,5 @@
 local LRUCache = require("avante.utils.lru_cache")
+local Filetype = require("plenary.filetype")
 
 ---@class avante.utils.file
 local M = {}
@@ -38,4 +39,27 @@ function M.exists(filepath)
   return stat ~= nil
 end
 
+function M.get_file_icon(filepath)
+  local filetype = Filetype.detect(filepath, {}) or "unknown"
+  ---@type string
+  local icon
+  ---@diagnostic disable-next-line: undefined-field
+  if _G.MiniIcons ~= nil then
+    ---@diagnostic disable-next-line: undefined-global
+    icon, _, _ = MiniIcons.get("filetype", filetype) -- luacheck: ignore
+  else
+    local ok, devicons = pcall(require, "nvim-web-devicons")
+    if ok then
+      icon = devicons.get_icon(filepath, filetype, { default = false })
+      if not icon then
+        icon = devicons.get_icon(filepath, nil, { default = true })
+        icon = icon or " "
+      end
+    else
+      icon = ""
+    end
+  end
+  return icon
+end
+
 return M