use cargo_metadata::{    camino::{Utf8Path, Utf8PathBuf},    Metadata, Package,};use git_repository as git;use git_repository::prelude::CacheAccessExt; pub struct Context {    pub root: Utf8PathBuf,    pub meta: Metadata,    pub repo: git::Easy,    pub crate_names: Vec<String>,} impl Context {    pub fn new(crate_names: Vec<String>) -> anyhow::Result<Self> {        let meta = cargo_metadata::MetadataCommand::new().exec()?;        let root = meta.workspace_root.clone();        let repo = git::discover(&root)?;        Ok(Context {            root,            repo: repo.into_easy().apply_environment()?,            meta,            crate_names: fill_in_root_crate_if_needed(crate_names)?,        })    }     pub(crate) fn repo_relative_path<'a>(&self, p: &'a Package) -> Option<&'a Utf8Path> {        let dir = p            .manifest_path            .parent()            .expect("parent of a file is always present")            .strip_prefix(&self.root)            .expect("workspace members are releative to the root directory");         if dir.as_os_str().is_empty() {            None        } else {            dir.into()        }    }} fn fill_in_root_crate_if_needed(crate_names: Vec<String>) -> anyhow::Result<Vec<String>> {    Ok(if crate_names.is_empty() {        let current_dir = std::env::current_dir()?;        let manifest = current_dir.join("Cargo.toml");        let dir_name = current_dir            .file_name()            .expect("a valid directory with a name")            .to_str()            .expect("directory is UTF8 representable");        let crate_name = if manifest.is_file() {            let manifest = cargo_toml::Manifest::from_path(manifest)?;            manifest.package.map_or(dir_name.to_owned(), |p| p.name)        } else {            dir_name.to_owned()        };        log::warn!(            "Using '{}' as crate name as no one was provided. Specify one if this isn't correct",            crate_name        );        vec![crate_name]    } else {        crate_names    })}