rvt 0.4.0

Apache-2.0 clean-room reader for Autodesk Revit files (.rvt, .rfa, .rte, .rft) without Revit: metadata, previews and the embedded schema of 2016-2026 files, and typed elements with measured geometry from Revit 2024 and 2025 projects, exported as IFC4, glTF and plan SVG.
Documentation 
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//! Round-trip integrity test for `writer::copy_file`.
//!
//! Opens the 2024 sample family, writes it to a new OLE container, then
//! re-reads every stream from both source and destination and confirms
//! byte-for-byte equality. Exits 0 if all 13 streams match.
//!
//! This probe backs the "byte-preserving read-modify-write round-trip
//! (13/13 streams identical)" claim in the README's RE-state table.

use rvt::RevitFile;
use rvt::writer;
use std::path::PathBuf;

fn main() -> anyhow::Result<()> {
    let src = PathBuf::from("../../samples/_phiag/examples/Autodesk/racbasicsamplefamily-2024.rfa");
    let dst = std::env::temp_dir().join("rvt-rs-roundtrip.rfa");
    writer::copy_file(&src, &dst)?;

    let mut a = RevitFile::open(&src)?;
    let mut b = RevitFile::open(&dst)?;
    let mut ok = 0;
    let mut mismatch = 0;
    for name in a.stream_names() {
        let ba = a.read_stream(&name)?;
        let bb = b.read_stream(&name)?;
        if ba == bb {
            ok += 1;
        } else {
            mismatch += 1;
            println!("DIFF: {name} ({} vs {} bytes)", ba.len(), bb.len());
        }
    }
    println!("round-trip check: {ok} streams identical, {mismatch} mismatches");
    std::fs::remove_file(dst)?;
    Ok(())
}