feat(status): add bufnr provider and add to fileinfo component

Author: mehalter

lua/astroui/status/component.lua

@@ -34,6 +34,7 @@ function M.file_info(opts)
   opts = extend_tbl(vim.tbl_get(config, "components", "file_info"), opts)
   return M.builder(status_utils.setup_providers(opts, {
     "file_icon",
+    "bufnr",
     "unique_path",
     "filename",
     "filetype",

lua/astroui/status/config.lua

@@ -71,6 +71,9 @@
 
 ---@class AstroUIProviderFiletypeOpts: AstroUIStatusStylizeOpts
 
+---@class AstroUIProviderBufnrOpts: AstroUIStatusStylizeOpts
+---@field suffix string? string to append after the buffer number
+
 ---@class AstroUIProviderFilenameOpts: AstroUIStatusStylizeOpts
 ---@field fname (fun(bufnr: integer): string)? function for calculating the buffer name
 ---@field modify string? modifiers to pass to `fnamemodify` on final path
@@ -133,6 +136,7 @@
 ---@field scrollbar AstroUIProviderScrollbarOpts? default options for the `scrollbar` provider
 ---@field close_button AstroUIProviderCloseButtonOpts? default options for the `close_button` provider
 ---@field filetype AstroUIProviderFiletypeOpts? default options for the `filetype` provider
+---@field bufnr AstroUIProviderBufnrOpts? default options for the `bufnr` provider
 ---@field filename AstroUIProviderFilenameOpts? default options for the `filename` provider
 ---@field file_encoding AstroUIProviderFileEncodingOpts? default options for the `file_encoding` provider
 ---@field file_format AstroUIProviderFileFormatOpts? default options for the `file_format` provider
@@ -379,6 +383,7 @@ return {
         hl = function(self) return require("astroui.status.hl").file_icon "statusline"(self) end,
         padding = { left = 1, right = 1 },
       },
+      bufnr = false,
       filename = false,
       filetype = {},
       file_modified = {
@@ -715,6 +720,7 @@ return {
     ruler = { pad_ruler = { line = 3, char = 2 } },
     scrollbar = { chars = { "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" } },
     close_button = { kind = "BufferClose" },
+    bufnr = { suffix = "." },
     filename = {
       fallback = "Untitled",
       fname = function(bufnr) return vim.api.nvim_buf_get_name(bufnr) end,

lua/astroui/status/provider.lua

@@ -301,6 +301,21 @@ function M.filetype(opts)
   return function(self) return status_utils.stylize(vim.bo[self and self.bufnr or 0].filetype, opts) end
 end
 
+--- A provider function for showing the buffer number
+---@param opts? AstroUIProviderBufnrOpts provider options
+---@return function  # the function for outputting the buffer number
+-- @usage local heirline_component = { provider = require("astroui.status").provider.bufnr() }
+-- @see astroui.status.utils.stylize
+function M.bufnr(opts)
+  opts = extend_tbl(vim.tbl_get(config, "providers", "bufnr"), opts)
+  return function(self)
+    return status_utils.stylize(
+      tostring(self and self.bufnr or vim.api.nvim_get_current_buf()) .. (opts.suffix or ""),
+      opts
+    )
+  end
+end
+
 --- A provider function for showing the current filename
 ---@param opts? AstroUIProviderFilenameOpts provider options
 ---@return function # the function for outputting the filename