Method mtree

alpm-package/src/input.rs:554–574

Returns a reference to the [`Mtree`] data of the [`PackageInput`]. Compares the stored hash digest of the file with that of the file on disk. # Errors Returns an error if - the file on disk can no longer be read, - or the file on disk has a changed hash digest.

(&self)

    /// - the file on disk can no longer be read,
    /// - or the file on disk has a changed hash digest.
    pub fn mtree(&self) -> Result<&Mtree, crate::Error> {
        let file_name = PathBuf::from(MetadataFileName::Mtree.as_ref());
        let path = self.input_dir.join(file_name.as_path());
        let buf = read(path.as_path()).map_err(|source| crate::Error::IoPath {
            path: path.clone(),
            context: t!("error-io-read-mtree"),
            source,
        })?;
        let current_digest = Sha256Checksum::calculate_from(buf);
        if current_digest != self.mtree_digest {
            return Err(Error::FileHashDigestChanged {
                path: file_name,
                current_digest,
                initial_digest: self.mtree_digest.clone(),
                input_dir: self.input_dir.to_path_buf(),
            }
            .into());
        }

        Ok(&self.mtree)
    }

    /// Returns the optional [alpm-install-scriptlet] of the [`PackageInput`] as [`Path`] reference.
    ///