Struct sqlite_rs::SQLiteDatabase

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pub struct SQLiteDatabase { /* private fields */ }

Implementations§

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impl SQLiteDatabase

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pub const MINIMUM_SIZE: usize = 580usize

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pub fn new_in_memory(bytes: &[u8]) -> SQLiteResult<Self>

Examples found in repository ?

examples/sqlite_info.rs (line 37)

  fn read_bytes<T: AsRef<str>>(file_path: &T) -> AppResult<SQLiteDatabase> {
    const MAX_LENGTH: usize = 1 * 1024 * 1024; // Read first 1 MBytes
    let mut f = File::open(file_path.as_ref())?;
    let mut buffer: [u8; MAX_LENGTH] = [0; MAX_LENGTH];
    let _ = f.read(&mut buffer)?;
    let database = SQLiteDatabase::new_in_memory(&buffer[..])?;
    Ok(database)
  }

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pub fn mode(&self) -> &Mode

Examples found in repository ?

examples/sqlite_info.rs (line 45)

  fn print_sqlite_info(sqlite_database: &SQLiteDatabase) -> AppResult<()> {
    const LABEL_WIDTH: usize = 21;

    // TODO:
    let sqlite_header = sqlite_database.header();

    let mut output = "".to_owned();

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "database page size:",
      value = **sqlite_header.page_size()
    ));
    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "write format:",
      value =
        u8::from(sqlite_header.file_format_version_numbers().write_version())
    ));
    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "read format:",
      value =
        u8::from(sqlite_header.file_format_version_numbers().read_version())
    ));
    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "reserved bytes:",
      value = **sqlite_header.reserved_bytes_per_page()
    ));
    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "file change counter:",
      value = **sqlite_header.file_change_counter()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "database page count:",
      value = **sqlite_header.db_filesize_in_pages()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "freelist page count:",
      value = **sqlite_header.freelist_pages().total()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "schema cookie:",
      value = **sqlite_header.schema_cookie()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "schema format:",
      value = u32::from(sqlite_header.schema_format())
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "default cache size:",
      value = **sqlite_header.suggested_cache_size()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "autovacuum top root:",
      value = **sqlite_header
        .incremental_vacuum_settings()
        .largest_root_btree_page()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "incremental vacuum:",
      value = u32::from(
        sqlite_header
          .incremental_vacuum_settings()
          .incremental_vacuum_mode()
      )
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "text encoding:",
      value = sqlite_header.database_text_encoding()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "user version:",
      value = **sqlite_header.user_version()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "application id:",
      value = **sqlite_header.application_id()
    ));

    output.push_str(&format!(
      "{label: <w$}{value}\n",
      w = LABEL_WIDTH,
      label = "software version:",
      value = **sqlite_header.write_library_version()
    ));

    println!("{output}");
    Ok(())
  }