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rust/iris_rust_port_plan.md

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+# 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