lance_table/
format.rs

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// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright The Lance Authors

use arrow_buffer::ToByteSlice;
use snafu::{location, Location};
use uuid::Uuid;

mod fragment;
mod index;
mod manifest;

pub use fragment::*;
pub use index::Index;
pub use manifest::{
    is_detached_version, DataStorageFormat, Manifest, SelfDescribingFileReader, WriterVersion,
    DETACHED_VERSION_MASK,
};

use lance_core::{Error, Result};

/// Protobuf definitions for Lance Format
pub mod pb {
    #![allow(clippy::all)]
    #![allow(non_upper_case_globals)]
    #![allow(non_camel_case_types)]
    #![allow(non_snake_case)]
    #![allow(unused)]
    #![allow(improper_ctypes)]
    #![allow(clippy::upper_case_acronyms)]
    #![allow(clippy::use_self)]
    include!(concat!(env!("OUT_DIR"), "/lance.table.rs"));
}

/// These version/magic values are written at the end of manifest files (e.g. versions/1.version)
pub const MAJOR_VERSION: i16 = 0;
pub const MINOR_VERSION: i16 = 1;
pub const MAGIC: &[u8; 4] = b"LANC";

impl TryFrom<&pb::Uuid> for Uuid {
    type Error = Error;

    fn try_from(p: &pb::Uuid) -> Result<Self> {
        if p.uuid.len() != 16 {
            return Err(Error::io(
                "Protobuf UUID is malformed".to_string(),
                location!(),
            ));
        }
        let mut buf: [u8; 16] = [0; 16];
        buf.copy_from_slice(p.uuid.to_byte_slice());
        Ok(Self::from_bytes(buf))
    }
}

impl From<&Uuid> for pb::Uuid {
    fn from(value: &Uuid) -> Self {
        Self {
            uuid: value.into_bytes().to_vec(),
        }
    }
}