Feature: MIME & Integrity Helpers (MimeHelper + CRC32)

Purpose

Provide consistent content-type and integrity behaviour across providers and integrations:

• MIME type resolution via MimeHelper
• streamed CRC32 calculation via Crc32Helper for large-file validation and mirroring scenarios

Main Flows

flowchart LR
  FileName[File name] --> Mime[MimeHelper.GetMimeType]
  Stream[Stream] --> CRC[Crc32Helper]
  CRC --> Validation[Compare checksums]

Components

• MIME:
  • ManagedCode.MimeTypes (MimeHelper)
• CRC:
  • ManagedCode.Storage.Core/Helpers/Crc32Helper.cs
  • ManagedCode.Storage.Core/Helpers/PathHelper.cs (shared path utilities used by storages)

Current Behavior

• MIME type is typically derived from the file name and stored as BlobMetadata.MimeType where providers support it.
• CRC32 can be computed without loading full content into memory (streamed processing).
• All MIME lookups should go through MimeHelper (avoid provider-specific or ad-hoc MIME detection).

Tests

• Tests/ManagedCode.Storage.Tests/Core/Crc32HelperTests.cs