StringiForStrings Fortran Manipulator

A pure Fortran 2003+ library providing an OOP string type with Python-like methods.

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Rich String API

Split, join, replace, search, camelCase, snakeCase, pad, strip, reverse and more — all as type-bound procedures on a single string type.

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Seamless Number Casting

Assign any integer or real (all PENF kinds) directly to a string, and cast back with to_number(). No format strings needed.

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File & Path Utilities

Read and write files line-by-line or as streams. Manipulate file paths with basedir, basename, and extension methods.

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Multi Build & Install

Build with fpm, FoBiS, or GNU Make. Install as a static or shared library, or pull in directly as an fpm dependency.

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OOP/TDD Designed

A single string type with all functionality as type-bound procedures. Every method is covered by embedded doctests — safe, pure, and elemental where possible.

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Free & Open Source

Multi-licensed — GPLv3 for FOSS projects, BSD 2/3-Clause or MIT for commercial use. Fortran 2003+ standard compliant.

Quick start

A minimal plate:

fortran

use stringifor
type(string) :: s

s = 'Hello, World!'
print "(A)", s%upper()//'' ! HELLO, WORLD!
print "(A)", s%lower()//'' ! hello, world!

Authors

Stefano Zaghi — @szaghi

Contributions are welcome — see the Contributing page.

Copyrights

This project is distributed under a multi-licensing system:

FOSS projects: GPL v3
Closed source / commercial: BSD 2-Clause, BSD 3-Clause, or MIT

Anyone interested in using, developing, or contributing to this project is welcome — pick the license that best fits your needs.