use std::path::PathBuf; use super::{interpolate_context, util, Error, StageOne};use crate::{config::Cache, repository, revision::spec::parse::ObjectKindHint}; /// Initializationimpl Cache {    #[allow(clippy::too_many_arguments)]    pub fn from_stage_one(        StageOne {            git_dir_config,            mut buf,            lossy,            is_bare,            object_hash,            reflog: _,        }: StageOne,        git_dir: &std::path::Path,        branch_name: Option<&git_ref::FullNameRef>,        mut filter_config_section: fn(&git_config::file::Metadata) -> bool,        git_install_dir: Option<&std::path::Path>,        home: Option<&std::path::Path>,        repository::permissions::Environment {            git_prefix,            home: home_env,            xdg_config_home: xdg_config_home_env,            ssh_prefix: _,        }: repository::permissions::Environment,        repository::permissions::Config {            git_binary: use_installation,            system: use_system,            git: use_git,            user: use_user,            env: use_env,            includes: use_includes,        }: repository::permissions::Config,        lenient_config: bool,    ) -> Result<Self, Error> {        let options = git_config::file::init::Options {            includes: if use_includes {                git_config::file::includes::Options::follow(                    interpolate_context(git_install_dir, home),                    git_config::file::includes::conditional::Context {                        git_dir: git_dir.into(),                        branch_name,                    },                )            } else {                git_config::file::includes::Options::no_follow()            },            ..util::base_options(lossy)        };         let config = {            let home_env = &home_env;            let xdg_config_home_env = &xdg_config_home_env;            let git_prefix = &git_prefix;            let metas = [                git_config::source::Kind::GitInstallation,                git_config::source::Kind::System,                git_config::source::Kind::Global,            ]            .iter()            .flat_map(|kind| kind.sources())            .filter_map(|source| {                match source {                    git_config::Source::GitInstallation if !use_installation => return None,                    git_config::Source::System if !use_system => return None,                    git_config::Source::Git if !use_git => return None,                    git_config::Source::User if !use_user => return None,                    _ => {}                }                source                    .storage_location(&mut |name| {                        match name {                            git_ if git_.starts_with("GIT_") => Some(git_prefix),                            "XDG_CONFIG_HOME" => Some(xdg_config_home_env),                            "HOME" => Some(home_env),                            _ => None,                        }                        .and_then(|perm| std::env::var_os(name).and_then(|val| perm.check_opt(val)))                    })                    .map(|p| (source, p.into_owned()))            })            .map(|(source, path)| git_config::file::Metadata {                path: Some(path),                source: *source,                level: 0,                trust: git_sec::Trust::Full,            });             let err_on_nonexisting_paths = false;            let mut globals = git_config::File::from_paths_metadata_buf(                metas,                &mut buf,                err_on_nonexisting_paths,                git_config::file::init::Options {                    includes: git_config::file::includes::Options::no_follow(),                    ..options                },            )            .map_err(|err| match err {                git_config::file::init::from_paths::Error::Init(err) => Error::from(err),                git_config::file::init::from_paths::Error::Io(err) => err.into(),            })?            .unwrap_or_default();             globals.append(git_dir_config);            globals.resolve_includes(options)?;            if use_env {                globals.append(git_config::File::from_env(options)?.unwrap_or_default());            }            globals        };         let excludes_file = match config            .path_filter("core", None, "excludesFile", &mut filter_config_section)            .map(|p| p.interpolate(options.includes.interpolate).map(|p| p.into_owned()))            .transpose()        {            Ok(f) => f,            Err(_err) if lenient_config => None,            Err(err) => return Err(err.into()),        };         let hex_len = match util::parse_core_abbrev(&config, object_hash) {            Ok(v) => v,            Err(_err) if lenient_config => None,            Err(err) => return Err(err),        };         use util::config_bool;        let reflog = util::query_refupdates(&config);        let ignore_case = config_bool(&config, "core.ignoreCase", false, lenient_config)?;        let use_multi_pack_index = config_bool(&config, "core.multiPackIndex", true, lenient_config)?;        let object_kind_hint = config.string("core", None, "disambiguate").and_then(|value| {            Some(match value.as_ref().as_ref() {                b"commit" => ObjectKindHint::Commit,                b"committish" => ObjectKindHint::Committish,                b"tree" => ObjectKindHint::Tree,                b"treeish" => ObjectKindHint::Treeish,                b"blob" => ObjectKindHint::Blob,                _ => return None,            })        });        Ok(Cache {            resolved: config.into(),            use_multi_pack_index,            object_hash,            object_kind_hint,            reflog,            is_bare,            ignore_case,            hex_len,            filter_config_section,            excludes_file,            xdg_config_home_env,            home_env,            personas: Default::default(),            url_rewrite: Default::default(),            #[cfg(any(feature = "blocking-network-client", feature = "async-network-client-async-std"))]            url_scheme: Default::default(),            git_prefix,        })    }     /// Return a path by using the `$XDF_CONFIG_HOME` or `$HOME/.config/…` environment variables locations.    pub fn xdg_config_path(        &self,        resource_file_name: &str,    ) -> Result<Option<PathBuf>, git_sec::permission::Error<PathBuf>> {        std::env::var_os("XDG_CONFIG_HOME")            .map(|path| (path, &self.xdg_config_home_env))            .or_else(|| std::env::var_os("HOME").map(|path| (path, &self.home_env)))            .and_then(|(base, permission)| {                let resource = std::path::PathBuf::from(base).join("git").join(resource_file_name);                permission.check(resource).transpose()            })            .transpose()    }     /// Return the home directory if we are allowed to read it and if it is set in the environment.    ///    /// We never fail for here even if the permission is set to deny as we `git-config` will fail later    /// if it actually wants to use the home directory - we don't want to fail prematurely.    pub fn home_dir(&self) -> Option<PathBuf> {        std::env::var_os("HOME")            .map(PathBuf::from)            .and_then(|path| self.home_env.check_opt(path))    }}