DateiIO

DateiIO is a cross-platform, open-source library that provides a unified API for file input and output. It aims to simplify and standardize common file operations across operating systems by wrapping platform-specific APIs (such as POSIX and Win32) behind a consistent, language-neutral interface.

Its API covers synchronous and asynchronous I/O, streaming and buffering, and support for both text and binary data with configurable encodings. The library offers facilities for reading and writing files, seeking, buffering strategies, and streaming pipelines. It also provides directory traversal, recursive copy, move, delete operations, and metadata access (size, timestamps, permissions, and file type).

DateiIO uses a modular architecture with a core I/O layer and optional adapters or bindings for C, C++, Rust, and Python. The core abstracts filesystem differences, while bindings expose idiomatic interfaces for each language. Error handling is standardized across platforms, with a rich set of error codes and optional exceptions in higher-level bindings. Some builds include optional features such as memory-mapped I/O and zero-copy transfers to optimize throughput.

Development of DateiIO began in the mid-2010s by a community of contributors focused on portability and reliability. The project released its first stable version in the mid-2010s and has since seen periodic releases and ecosystem integrations. It is distributed under open-source licenses, with governance and contribution guidelines maintained in its repository. The library is used in various open-source projects and internal tools that require consistent file-system behavior across environments.

See also: File I/O, cross-platform file systems, asynchronous I/O, streaming data, memory-mapped files.