Crate minimime 

minimime

A minimal MIME type detection library for Rust, ported from the Ruby minimime gem.

This library provides fast MIME type detection based on file extensions and content types, using embedded database files for efficient lookups without external dependencies.

Features

• Fast lookups: Uses embedded hash maps for average O(1) MIME type detection
• No external dependencies: Database files are embedded at compile time
• Case insensitive: Handles file extensions in any case
• Binary detection: Identifies binary vs text file types
• Thread safe: Safe for concurrent use across multiple threads

Quick Start

use minimime::{lookup_by_filename, lookup_by_extension, lookup_by_content_type};

// Look up by filename
if let Some(info) = lookup_by_filename("document.pdf") {
    println!("MIME type: {}", info.content_type); // "application/pdf"
    println!("Is binary: {}", info.is_binary());  // true
}

// Look up by extension
if let Some(info) = lookup_by_extension("json") {
    println!("MIME type: {}", info.content_type); // "application/json"
}

// Look up by content type
if let Some(info) = lookup_by_content_type("text/css") {
    println!("Extension: {}", info.extension); // "css"
}

Supported File Types

This library supports hundreds of file extensions and MIME types, including:

• Web formats (HTML, CSS, JS, JSON, XML)
• Images (PNG, JPEG, GIF, SVG, WebP)
• Documents (PDF, DOC, XLS, PPT)
• Archives (ZIP, TAR, GZ)
• Media files (MP3, MP4, AVI, MOV)
• And many more…

Structs

Db

Internal database for MIME type lookups.

Info

MIME type information including extension, content type, and encoding.

Functions

lookup_by_content_type

Looks up MIME information by content type.

lookup_by_extension

Looks up MIME information by file extension.

lookup_by_filename

Looks up MIME information by filename.