Mimetype Detection

Purpose

This capability enables the detection of MIME types from byte content or file locations. It allows applications to determine appropriate content handling strategies by identifying the format of the data.

Requirements

Requirement: Content-Based Detection

The system SHALL detect MIME types using content-based analysis (magic bytes) to ensure accurate identification even without file extensions.

Priority: Critical

Scenario: Detect from bytes

  • WHEN raw byte content is provided

  • THEN the system returns the detected MIME type based on magic numbers

  • AND a confidence score is provided

Requirement: Fallback Detection

The system SHALL fall back to file extension-based detection when content detection fails or provides low confidence results.

Priority: Critical

Scenario: Fallback to extension

  • WHEN content detection returns indeterminate results

  • AND a file path is provided

  • THEN the system determines the MIME type based on the file extension

Requirement: Standardized Output

The system SHALL return standardized MIME type strings (e.g., “text/plain”, “application/json”) to ensure consistency across applications.

Priority: Critical

Scenario: Standardized format

  • WHEN a MIME type is detected

  • THEN it matches the IANA media type registry format

Requirement: Textual Type Identification

The system SHALL identify if a MIME type represents textual content to facilitate text processing decisions.

Priority: High

Scenario: Identify textual types

  • WHEN a MIME type is checked

  • THEN the system correctly identifies if it is textual (e.g., “text/html”, “application/json”) or binary