Introduction to EditorConfig

EditorConfig helps maintain consistent coding styles across various editors and IDEs. It is a simple yet powerful tool to standardize code formatting. This guide introduces EditorConfig and explains useful API functions with detailed code snippets.

What is EditorConfig?

EditorConfig is a file format and collection of text editor plugins to help maintain consistent coding styles between different editors and IDEs. The .editorconfig file contains styles like indentation, charset, and line endings to be enforced.

Sample .editorconfig File

  # EditorConfig is awesome: https://EditorConfig.org

  root = true

  [*]
  indent_style = space
  indent_size = 4
  end_of_line = lf
  charset = utf-8
  trim_trailing_whitespace = true
  insert_final_newline = true

  [*.md]
  trim_trailing_whitespace = false

EditorConfig APIs and Examples

The following are some useful EditorConfig APIs with examples:

1. get_properties(filename: str)

This function retrieves EditorConfig properties for a given file.

  import editorconfig

  filename = 'example.py'
  props = editorconfig.get_properties(filename)
  print(props)

2. load(path)

Loads the EditorConfig file from the specified path.

  from editorconfig import EditorConfig

  config = EditorConfig.load('/path/to/.editorconfig')
  print(config.sections)

3. parse(filepath)

Parses a given file and returns the settings.

  import os
  from editorconfig import EditorConfig

  config = EditorConfig()
  result = config.parse(os.path.join(os.getcwd(), 'example.py'))
  print(result)

4. get_config(filepath)

Returns the unified form of EditorConfig settings for the given file.

  from editorconfig import get_config

  config = get_config('example.py')
  print(config)

App Example Using EditorConfig

Here is an example of a small app demonstrating the usage of EditorConfig APIs:

  import editorconfig
  import os

  def format_code(file_path):
      config_path = os.path.join(os.getcwd(), '.editorconfig')
      config = editorconfig.get_config(file_path)

      with open(file_path, 'r') as file:
          lines = file.readlines()

      formatted_lines = []
      for line in lines:
          if config['trim_trailing_whitespace']:
              line = line.rstrip() + '\n'
          formatted_lines.append(line)
      
      with open(file_path, 'w') as file:
          file.writelines(formatted_lines)
      
      print(f"Formatted {file_path} according to .editorconfig settings")

  # Usage
  format_code('example.py')

In this example, the format_code function trims trailing whitespaces in the given file according to the .editorconfig settings. This approach can be extended to implement other formatting rules as well.

By using EditorConfig, you can ensure consistent coding styles across your project, making collaboration easier and reducing time spent on code reviews.

Happy coding!

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