pub use git_config::*;use git_features::threading::OnceCell; use crate::{bstr::BString, remote, repository::identity, revision::spec, Repository}; pub(crate) mod cache;mod snapshot;pub use snapshot::credential_helpers; ///pub mod overrides; /// A platform to access configuration values as read from disk.////// Note that these values won't update even if the underlying file(s) change.pub struct Snapshot<'repo> {    pub(crate) repo: &'repo Repository,} /// A platform to access configuration values and modify them in memory, while making them available when this platform is dropped/// as form of auto-commit./// Note that the values will only affect this instance of the parent repository, and not other clones that may exist.////// Note that these values won't update even if the underlying file(s) change.////// Use [`forget()`][Self::forget()] to not apply any of the changes.// TODO: make it possible to load snapshots with reloading via .config() and write mutated snapshots back to disk which should be the way//       to affect all instances of a repo, probably via `config_mut()` and `config_mut_at()`.pub struct SnapshotMut<'repo> {    pub(crate) repo: Option<&'repo mut Repository>,    pub(crate) config: git_config::File<'static>,} /// A utility structure created by [`SnapshotMut::commit_auto_rollback()`] that restores the previous configuration on drop.pub struct CommitAutoRollback<'repo> {    pub(crate) repo: Option<&'repo mut Repository>,    pub(crate) prev_config: crate::Config,} pub(crate) mod section {    pub fn is_trusted(meta: &git_config::file::Metadata) -> bool {        meta.trust == git_sec::Trust::Full || meta.source.kind() != git_config::source::Kind::Repository    }} /// The error returned when failing to initialize the repository configuration.////// This configuration is on the critical path when opening a repository.#[derive(Debug, thiserror::Error)]#[allow(missing_docs)]pub enum Error {    #[error("Could not read configuration file")]    Io(#[from] std::io::Error),    #[error(transparent)]    Init(#[from] git_config::file::init::Error),    #[error(transparent)]    ResolveIncludes(#[from] git_config::file::includes::Error),    #[error(transparent)]    FromEnv(#[from] git_config::file::init::from_env::Error),    #[error("Cannot handle objects formatted as {:?}", .name)]    UnsupportedObjectFormat { name: BString },    #[error("The value for '{}' cannot be empty", .key)]    EmptyValue { key: &'static str },    #[error("Invalid value for 'core.abbrev' = '{}'. It must be between 4 and {}", .value, .max)]    CoreAbbrev { value: BString, max: u8 },    #[error("Value '{}' at key '{}' could not be decoded as boolean", .value, .key)]    DecodeBoolean { key: String, value: BString },    #[error(transparent)]    PathInterpolation(#[from] git_config::path::interpolate::Error),    #[error("Configuration overrides at open or init time could not be applied.")]    ConfigOverrides(#[from] overrides::Error),    #[error("Invalid value for 'core.logAllRefUpdates': \"{value}\"")]    LogAllRefUpdates { value: BString },} ///pub mod diff {    ///    pub mod algorithm {        use crate::bstr::BString;         /// The error produced when obtaining `diff.algorithm`.        #[derive(Debug, thiserror::Error)]        #[allow(missing_docs)]        pub enum Error {            #[error("Unknown diff algorithm named '{name}'")]            Unknown { name: BString },            #[error("The '{name}' algorithm is not yet implemented")]            Unimplemented { name: BString },        }    }} ///pub mod checkout_options {    /// The error produced when collecting all information needed for checking out files into a worktree.    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error {        #[error("{key} could not be decoded")]        Configuration {            key: &'static str,            source: git_config::value::Error,        },        #[error("Failed to interpolate the attribute file configured at `core.attributesFile`")]        AttributesFileInterpolation(#[from] git_config::path::interpolate::Error),    }} ///pub mod transport {    use crate::bstr;     /// The error produced when configuring a transport for a particular protocol.    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error {        #[error(            "Could not interpret configuration key {key:?} as {kind} integer of desired range with value: {actual}"        )]        InvalidInteger {            key: &'static str,            kind: &'static str,            actual: i64,        },        #[error("Could not interpret configuration key {key:?}")]        ConfigValue {            source: git_config::value::Error,            key: &'static str,        },        #[error("Could not decode value at key {key:?} as UTF-8 string")]        IllformedUtf8 {            key: &'static str,            source: bstr::FromUtf8Error,        },        #[error("Invalid URL passed for configuration")]        ParseUrl(#[from] git_url::parse::Error),        #[error("Could obtain configuration for an HTTP url")]        Http(#[from] http::Error),    }     ///    pub mod http {        /// The error produced when configuring a HTTP transport.        #[derive(Debug, thiserror::Error)]        #[allow(missing_docs)]        pub enum Error {            #[error("TBD")]            TBD,        }    }} /// Utility type to keep pre-obtained configuration values, only for those required during initial setup/// and other basic operations that are common enough to warrant a permanent cache.////// All other values are obtained lazily using OnceCell.#[derive(Clone)]pub(crate) struct Cache {    pub resolved: crate::Config,    /// The hex-length to assume when shortening object ids. If `None`, it should be computed based on the approximate object count.    pub hex_len: Option<usize>,    /// true if the repository is designated as 'bare', without work tree.    pub is_bare: bool,    /// The type of hash to use.    pub object_hash: git_hash::Kind,    /// If true, multi-pack indices, whether present or not, may be used by the object database.    pub use_multi_pack_index: bool,    /// The representation of `core.logallrefupdates`, or `None` if the variable wasn't set.    pub reflog: Option<git_ref::store::WriteReflog>,    /// The configured user agent for presentation to servers.    pub(crate) user_agent: OnceCell<String>,    /// identities for later use, lazy initialization.    pub(crate) personas: OnceCell<identity::Personas>,    /// A lazily loaded rewrite list for remote urls    pub(crate) url_rewrite: OnceCell<remote::url::Rewrite>,    /// A lazily loaded mapping to know which url schemes to allow    #[cfg(any(feature = "blocking-network-client", feature = "async-network-client"))]    pub(crate) url_scheme: OnceCell<remote::url::SchemePermission>,    /// The algorithm to use when diffing blobs    pub(crate) diff_algorithm: OnceCell<git_diff::blob::Algorithm>,    /// The config section filter from the options used to initialize this instance. Keep these in sync!    filter_config_section: fn(&git_config::file::Metadata) -> bool,    /// The object kind to pick if a prefix is ambiguous.    pub object_kind_hint: Option<spec::parse::ObjectKindHint>,    /// If true, we are on a case-insensitive file system.    pub ignore_case: bool,    /// If true, we should default what's possible if something is misconfigured, on case by case basis, to be more resilient.    /// Also available in options! Keep in sync!    pub lenient_config: bool,    /// Define how we can use values obtained with `xdg_config(…)` and its `XDG_CONFIG_HOME` variable.    xdg_config_home_env: git_sec::Permission,    /// Define how we can use values obtained with `xdg_config(…)`. and its `HOME` variable.    home_env: git_sec::Permission,    /// How to use git-prefixed environment variables    git_prefix: git_sec::Permission,    // TODO: make core.precomposeUnicode available as well.}