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CONTRIBUTING.md

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Contributing to xob

xob is a very small project. There is no particular template for issues or pull requests. All reviews, expert wisdom, suggestions, and contributions are welcome.

Style

Coding style is llvm with Allman indentation style and 4 spaces per indentation (use clang-format). See the .clang-format file.

Map

There are three parts in this project:

  • main parses the arguments, looks for a configuration file, and contains the main loop.
    • parse_input reads a value from the standard input and returns an Input_value: it contains the value itself, whether it is in normal or alternate mode (e.g. muted), and a valid boolean in case the provided input cannot be parsed.
    • Main loop After initialising a Display_context using the information style from a configuration file, the program waits for input on stdin. select is used to provide a timeout mechanism during this wait. This is in case the bar has been displayed enough time and needs to be hidden using hide. If the bar is not on display, there is no timeout. When an input is available, it is parsed using parse_input. If it is not a valid input (not a number followed or not by '!'), xob stops. If it is valid, the bar is displayed using display.
  • conf parses a configuration file and generates a valid configuration.
    • Style is the structure for a style (or "configuration").
    • conf.h defines DEFAULT_CONFIGURATION the default hard-coded configuration.
    • parse_style_config builds a style from a configuration file reporting errors if need be.
  • display handles the X related stuff to construct, update, display, and hide the bar.
    • All information required to show, update, and hide a given bar is sumed-up as a Display_context value.
    • init builds a display context corresponding to a given style.
    • show displays the bar, given a value, maximum value, whether the display mode is normal or alternate (show_mode), and the prefered way to represent overflows (overflow_mode).
    • hide hides the bar

Do not hesitate to issue requests for additional information.