fprettier

fprettier is an auto-formatter for Fortran 90+ code.

fprettier is inspired by fprettify but strives to be:

• :zap: Fast, especially for large codebases
• :wrench: Actively maintained, with prompt responses to issues

Installation

First, install Rust and Cargo by following the instructions at:

https://rustup.rs

Then install fprettier:

cargo install fprettier

Usage

Run fprettier with no arguments to display the usage information.

Revision History

Version 0.2.0

New Features:

• Added support for C preprocessor directives (#if, #ifdef, #endif, etc.) -- preprocessor lines are preserved without formatting and indentation is handled correctly within preprocessor blocks

Bug Fixes:

• Fixed alignment in the presence of statement labels
• Fixed FORMAT statement continuation alignment
• Fixed leading +/- on continuation lines being incorrectly treated as binary operators instead of unary
• Fixed spacing around .NOT. operator
• Fixed spacing of SELECT TYPE/CASE statements
• Fixed indentation of one-line do/end do constructs
• Fixed OpenMP (!$OMP) continuation line handling
• Fixed spacing after comma before concatenation operator (//)
• Fixed indentation with pre-ampersand continuation style
• Fixed END IF recognition after semicolon on same line
• Various other whitespace and spacing improvements

Version 0.1.0

• Initial release with core formatting capabilities:
  • Indentation normalization
  • Keyword case conversion
  • Whitespace normalization around operators
  • Line continuation handling
  • Alignment of trailing comments and inline assignments
  • TOML configuration file support
  • In-file directive overrides (! fprettier:)
  • Parallel processing via Rayon for large codebases
  • Fypp preprocessor directive support