Function get_install_scriptlet

alpm-package/src/input.rs:259–275

Returns whether an [alpm-install-scriptlet] exists in an input directory. # Errors Returns an error if - the file contents cannot be read to a buffer, - the hash digest of the file does not match that initially recorded in `mtree`, - or the file contents do not represent valid [alpm-install-scriptlet] data. [alpm-install-scriptlet]: https://alpm.archlinux.page/specifications/alpm-install-scrip

(
    input_dir: &InputDir,
    mtree: &Mtree,
)

///
/// [alpm-install-scriptlet]: https://alpm.archlinux.page/specifications/alpm-install-scriptlet.5.html
fn get_install_scriptlet(
    input_dir: &InputDir,
    mtree: &Mtree,
) -> Result<Option<PathBuf>, crate::Error> {
    debug!("Check that an alpm-install-scriptlet is valid if it exists in {input_dir:?}.");

    let path = match compare_digests(mtree, input_dir, INSTALL_SCRIPTLET_FILE_NAME) {
        Err(crate::Error::Input(Error::FileIsMissing { .. })) => return Ok(None),
        Err(error) => return Err(error),
        Ok((path, _buf)) => path,
    };

    // Validate the scriptlet.
    check_scriptlet(&path)?;

    Ok(Some(path))
}

/// Returns a [`BuildInfo`] from a BUILDINFO file in an input directory.
///