\n
import os\nimport sublime\nimport sublime_plugin\n\n\nclass WhitespaceListener(sublime_plugin.EventListener):\n """Event listener to manage whitespace on save"""\n def on_pre_save(self, view):\n if view.settings().get(\'expand_tabs_on_save\') == True:\n view.run_command(\'expand_tabs\')\n if view.settings().get(\'trim_trailing_whitespace_on_save\') == True:\n view.run_command(\'trim_trailing_whitespace\')\n if view.settings().get(\'ensure_newline_at_eof_on_save\') == True:\n view.run_command(\'ensure_newline_at_eof\')\n\n\nclass TrimTrailingWhitespace(sublime_plugin.TextCommand):\n """Trims trailing whitespace."""\n def run(self, *args):\n trailing_white_space = self.view.find_all("[\\t ]+$")\n edit = self.view.begin_edit()\n for match in trailing_white_space:\n self.view.erase(edit, match)\n self.view.end_edit(edit)\n\n\nclass EnsureNewlineAtEof(sublime_plugin.TextCommand):\n """Ensures the desired number of trailing new lines.\n\n Set \'max_newline_removals\' to the number of newlines to be removed (\'\n a performance/sanity check.\')\n\n Set \'trailing_newlines\' to the number of desired newlines at the end of\n the file.\n """\n def run(self, *args):\n # Remove up to *max_newline_removals* trailing new lines.\n max_removals = self.view.settings().get(\'max_newline_removals\', 20)\n edit = self.view.begin_edit()\n for i in range(max_removals):\n size = self.view.size()\n last_line = self.view.full_line(size - 1)\n if size > 0 and self.view.substr(last_line) == \'\\n\':\n self.view.erase(edit, last_line)\n\n # Add desired trailing newlines\n trailing_newlines = self.view.settings().get(\'trailing_newlines\', 1)\n for i in range(trailing_newlines):\n if not self.view.substr(last_line).endswith(\'\\n\'):\n self.view.insert(edit, self.view.size(), \'\\n\')\n self.view.end_edit(edit)\n\n