[WIP] feat: Add --emit-offsets flag for enhanced reverse engineering (#18)

[Kyle-Ye]

⚠️ IMPORTANT NOTICE: This PR was generated by AI assistance and requires careful human review before merging.

Overview

This is a work-in-progress implementation of issue #18, adding detailed offset outputs for Swift binaries to enhance reverse engineering capabilities.

Features Implemented

• ✅ Added command line flag to DumpCommand
• ✅ Data Field Offsets: Memory locations of instance variables in structs/classes
• ✅ Virtual Function Offsets: V-table method locations for analyzing dynamic dispatch
• ✅ Protocol Witness Offsets: Protocol conformance implementation positions
• ✅ Automatic metadata search activation when offsets are requested

Usage Example

swift-section dump /path/to/binary -o output.txt --emit-offsets

Sample Output

The feature adds detailed offset comments like:

struct SomeStruct {
    var field1: Int
    var field2: String
}
// Data Field Offsets:
//   Field 0: 0x0
//   Field 1: 0x8

⚠️ Status: Work in Progress

• Testing: Limited testing performed, needs comprehensive validation
• Edge Cases: May need handling for edge cases and error conditions
• Performance: Impact on large binaries needs evaluation
• Documentation: Usage documentation needs completion

⚠️ AI-Generated Code Notice

This implementation was generated with AI assistance. The maintainer has indicated they lack the expertise to properly review this code. Please exercise extreme caution and thorough review before considering merge.

Files Changed

• Sources/swift-section/DumpCommand.swift: Added --emit-offsets flag and offset extraction logic

Related

Closes #18

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Reviewer Note: Please carefully validate the implementation, test with various binary types, and ensure the offset calculations are accurate for reverse engineering use cases.