# Iris Format Rust Porting Plan

## Project Structure
```
iris_rust/
├── Cargo.toml
└── src/
    ├── main.rs
    ├── structures.rs
    ├── read.rs
    ├── write.rs
    └── examples.rs
```

## Key Components
```mermaid
graph TD
    A[Create Rust Project] --> B[Project Structure]
    B --> C[Define Data Structures]
    C --> D[Implement Read Functions]
    C --> E[Implement Write Functions]
    D --> F[Serialization/Deserialization]
    E --> F
    F --> G[Example Implementation]
    G --> H[Testing]
```

## Implementation Steps
1. **Data Structures (structures.rs)**:
   - TimeStruct, SpectralData, SpectralInfo, OtherInfo, ImageInfo
   - Main IrisData container

2. **Read Functions (read.rs)**:
   - Implement read_time, read_spectral_data, etc.
   - Use std::io::Read trait

3. **Write Functions (write.rs)**:
   - Implement write_time, write_spectral_data, etc.
   - Use std::io::Write trait

4. **Example Implementation (examples.rs)**:
   - Create sample data
   - Write/read roundtrip test

5. **Main Integration (main.rs)**:
   - CLI interface
   - Example execution

## Key Differences from C
- Pointers replaced with Vec types
- Automatic memory management
- Manual serialization instead of memory casting
- Comprehensive error handling with Result type