Module file_detection

File type detection engine following ExifTool’s implementation

This module implements ExifTool’s sophisticated multi-tiered file type detection approach, ported from ExifTool.pm:2913-2999

Detection Flow:

1. Extension-based candidates (via generated fileTypeLookup)
2. Magic number validation (via generated magicNumber patterns)
3. Last-ditch embedded signature recovery

The implementation preserves ExifTool’s exact logic including:

• Weak magic types that defer to extension
• Extension normalization rules
• Conflict resolution patterns
• Error recovery mechanisms

Structs

FileTypeDetectionResult

FileTypeDetector

Main file type detector implementing ExifTool’s detection algorithm

Enums

FileDetectionError