Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1579 insertions, 0 deletions

diff --git a/vendor/git2/src/lib.rs b/vendor/git2/src/lib.rs
new file mode 100644
index 000000000..ef8cb2c9c
--- /dev/null
+++ b/vendor/git2/src/lib.rs
@@ -0,0 +1,1579 @@
+//! # libgit2 bindings for Rust
+//!
+//! This library contains bindings to the [libgit2][1] C library which is used
+//! to manage git repositories. The library itself is a work in progress and is
+//! likely lacking some bindings here and there, so be warned.
+//!
+//! [1]: https://libgit2.github.com/
+//!
+//! The git2-rs library strives to be as close to libgit2 as possible, but also
+//! strives to make using libgit2 as safe as possible. All resource management
+//! is automatic as well as adding strong types to all interfaces (including
+//! `Result`)
+//!
+//! ## Creating a `Repository`
+//!
+//! The `Repository` is the source from which almost all other objects in git-rs
+//! are spawned. A repository can be created through opening, initializing, or
+//! cloning.
+//!
+//! ### Initializing a new repository
+//!
+//! The `init` method will create a new repository, assuming one does not
+//! already exist.
+//!
+//! ```no_run
+//! # #![allow(unstable)]
+//! use git2::Repository;
+//!
+//! let repo = match Repository::init("/path/to/a/repo") {
+//!     Ok(repo) => repo,
+//!     Err(e) => panic!("failed to init: {}", e),
+//! };
+//! ```
+//!
+//! ### Opening an existing repository
+//!
+//! ```no_run
+//! # #![allow(unstable)]
+//! use git2::Repository;
+//!
+//! let repo = match Repository::open("/path/to/a/repo") {
+//!     Ok(repo) => repo,
+//!     Err(e) => panic!("failed to open: {}", e),
+//! };
+//! ```
+//!
+//! ### Cloning an existing repository
+//!
+//! ```no_run
+//! # #![allow(unstable)]
+//! use git2::Repository;
+//!
+//! let url = "https://github.com/alexcrichton/git2-rs";
+//! let repo = match Repository::clone(url, "/path/to/a/repo") {
+//!     Ok(repo) => repo,
+//!     Err(e) => panic!("failed to clone: {}", e),
+//! };
+//! ```
+//!
+//! To clone using SSH, refer to [RepoBuilder](./build/struct.RepoBuilder.html).
+//!
+//! ## Working with a `Repository`
+//!
+//! All derivative objects, references, etc are attached to the lifetime of the
+//! source `Repository`, to ensure that they do not outlive the repository
+//! itself.
+
+#![doc(html_root_url = "https://docs.rs/git2/0.17")]
+#![allow(trivial_numeric_casts, trivial_casts)]
+#![deny(missing_docs)]
+#![warn(rust_2018_idioms)]
+#![cfg_attr(test, deny(warnings))]
+
+use bitflags::bitflags;
+use libgit2_sys as raw;
+
+use std::ffi::{CStr, CString};
+use std::fmt;
+use std::str;
+use std::sync::Once;
+
+pub use crate::apply::{ApplyLocation, ApplyOptions};
+pub use crate::attr::AttrValue;
+pub use crate::blame::{Blame, BlameHunk, BlameIter, BlameOptions};
+pub use crate::blob::{Blob, BlobWriter};
+pub use crate::branch::{Branch, Branches};
+pub use crate::buf::Buf;
+pub use crate::cherrypick::CherrypickOptions;
+pub use crate::commit::{Commit, Parents};
+pub use crate::config::{Config, ConfigEntries, ConfigEntry};
+pub use crate::cred::{Cred, CredentialHelper};
+pub use crate::describe::{Describe, DescribeFormatOptions, DescribeOptions};
+pub use crate::diff::{Deltas, Diff, DiffDelta, DiffFile, DiffOptions};
+pub use crate::diff::{DiffBinary, DiffBinaryFile, DiffBinaryKind};
+pub use crate::diff::{DiffFindOptions, DiffHunk, DiffLine, DiffLineType, DiffStats};
+pub use crate::email::{Email, EmailCreateOptions};
+pub use crate::error::Error;
+pub use crate::index::{
+    Index, IndexConflict, IndexConflicts, IndexEntries, IndexEntry, IndexMatchedPath,
+};
+pub use crate::indexer::{Indexer, IndexerProgress, Progress};
+pub use crate::mailmap::Mailmap;
+pub use crate::mempack::Mempack;
+pub use crate::merge::{AnnotatedCommit, MergeOptions};
+pub use crate::message::{
+    message_prettify, message_trailers_bytes, message_trailers_strs, MessageTrailersBytes,
+    MessageTrailersBytesIterator, MessageTrailersStrs, MessageTrailersStrsIterator,
+    DEFAULT_COMMENT_CHAR,
+};
+pub use crate::note::{Note, Notes};
+pub use crate::object::Object;
+pub use crate::odb::{Odb, OdbObject, OdbPackwriter, OdbReader, OdbWriter};
+pub use crate::oid::Oid;
+pub use crate::packbuilder::{PackBuilder, PackBuilderStage};
+pub use crate::patch::Patch;
+pub use crate::pathspec::{Pathspec, PathspecFailedEntries, PathspecMatchList};
+pub use crate::pathspec::{PathspecDiffEntries, PathspecEntries};
+pub use crate::proxy_options::ProxyOptions;
+pub use crate::push_update::PushUpdate;
+pub use crate::rebase::{Rebase, RebaseOperation, RebaseOperationType, RebaseOptions};
+pub use crate::reference::{Reference, ReferenceNames, References};
+pub use crate::reflog::{Reflog, ReflogEntry, ReflogIter};
+pub use crate::refspec::Refspec;
+pub use crate::remote::{
+    FetchOptions, PushOptions, Refspecs, Remote, RemoteConnection, RemoteHead, RemoteRedirect,
+};
+pub use crate::remote_callbacks::{CertificateCheckStatus, Credentials, RemoteCallbacks};
+pub use crate::remote_callbacks::{TransportMessage, UpdateTips};
+pub use crate::repo::{Repository, RepositoryInitOptions};
+pub use crate::revert::RevertOptions;
+pub use crate::revspec::Revspec;
+pub use crate::revwalk::Revwalk;
+pub use crate::signature::Signature;
+pub use crate::stash::{StashApplyOptions, StashApplyProgressCb, StashCb};
+pub use crate::status::{StatusEntry, StatusIter, StatusOptions, StatusShow, Statuses};
+pub use crate::submodule::{Submodule, SubmoduleUpdateOptions};
+pub use crate::tag::Tag;
+pub use crate::time::{IndexTime, Time};
+pub use crate::tracing::{trace_set, TraceLevel};
+pub use crate::transaction::Transaction;
+pub use crate::tree::{Tree, TreeEntry, TreeIter, TreeWalkMode, TreeWalkResult};
+pub use crate::treebuilder::TreeBuilder;
+pub use crate::util::IntoCString;
+pub use crate::version::Version;
+pub use crate::worktree::{Worktree, WorktreeAddOptions, WorktreeLockStatus, WorktreePruneOptions};
+
+// Create a convinience method on bitflag struct which checks the given flag
+macro_rules! is_bit_set {
+    ($name:ident, $flag:expr) => {
+        #[allow(missing_docs)]
+        pub fn $name(&self) -> bool {
+            self.intersects($flag)
+        }
+    };
+}
+
+/// An enumeration of possible errors that can happen when working with a git
+/// repository.
+// Note: We omit a few native error codes, as they are unlikely to be propagated
+// to the library user. Currently:
+//
+// * GIT_EPASSTHROUGH
+// * GIT_ITEROVER
+// * GIT_RETRY
+#[derive(PartialEq, Eq, Clone, Debug, Copy)]
+pub enum ErrorCode {
+    /// Generic error
+    GenericError,
+    /// Requested object could not be found
+    NotFound,
+    /// Object exists preventing operation
+    Exists,
+    /// More than one object matches
+    Ambiguous,
+    /// Output buffer too short to hold data
+    BufSize,
+    /// User-generated error
+    User,
+    /// Operation not allowed on bare repository
+    BareRepo,
+    /// HEAD refers to branch with no commits
+    UnbornBranch,
+    /// Merge in progress prevented operation
+    Unmerged,
+    /// Reference was not fast-forwardable
+    NotFastForward,
+    /// Name/ref spec was not in a valid format
+    InvalidSpec,
+    /// Checkout conflicts prevented operation
+    Conflict,
+    /// Lock file prevented operation
+    Locked,
+    /// Reference value does not match expected
+    Modified,
+    /// Authentication error
+    Auth,
+    /// Server certificate is invalid
+    Certificate,
+    /// Patch/merge has already been applied
+    Applied,
+    /// The requested peel operation is not possible
+    Peel,
+    /// Unexpected EOF
+    Eof,
+    /// Invalid operation or input
+    Invalid,
+    /// Uncommitted changes in index prevented operation
+    Uncommitted,
+    /// Operation was not valid for a directory
+    Directory,
+    /// A merge conflict exists and cannot continue
+    MergeConflict,
+    /// Hashsum mismatch in object
+    HashsumMismatch,
+    /// Unsaved changes in the index would be overwritten
+    IndexDirty,
+    /// Patch application failed
+    ApplyFail,
+    /// The object is not owned by the current user
+    Owner,
+}
+
+/// An enumeration of possible categories of things that can have
+/// errors when working with a git repository.
+#[derive(PartialEq, Eq, Clone, Debug, Copy)]
+pub enum ErrorClass {
+    /// Uncategorized
+    None,
+    /// Out of memory or insufficient allocated space
+    NoMemory,
+    /// Syscall or standard system library error
+    Os,
+    /// Invalid input
+    Invalid,
+    /// Error resolving or manipulating a reference
+    Reference,
+    /// ZLib failure
+    Zlib,
+    /// Bad repository state
+    Repository,
+    /// Bad configuration
+    Config,
+    /// Regex failure
+    Regex,
+    /// Bad object
+    Odb,
+    /// Invalid index data
+    Index,
+    /// Error creating or obtaining an object
+    Object,
+    /// Network error
+    Net,
+    /// Error manipulating a tag
+    Tag,
+    /// Invalid value in tree
+    Tree,
+    /// Hashing or packing error
+    Indexer,
+    /// Error from SSL
+    Ssl,
+    /// Error involving submodules
+    Submodule,
+    /// Threading error
+    Thread,
+    /// Error manipulating a stash
+    Stash,
+    /// Checkout failure
+    Checkout,
+    /// Invalid FETCH_HEAD
+    FetchHead,
+    /// Merge failure
+    Merge,
+    /// SSH failure
+    Ssh,
+    /// Error manipulating filters
+    Filter,
+    /// Error reverting commit
+    Revert,
+    /// Error from a user callback
+    Callback,
+    /// Error cherry-picking commit
+    CherryPick,
+    /// Can't describe object
+    Describe,
+    /// Error during rebase
+    Rebase,
+    /// Filesystem-related error
+    Filesystem,
+    /// Invalid patch data
+    Patch,
+    /// Error involving worktrees
+    Worktree,
+    /// Hash library error or SHA-1 collision
+    Sha1,
+    /// HTTP error
+    Http,
+}
+
+/// A listing of the possible states that a repository can be in.
+#[derive(PartialEq, Eq, Clone, Debug, Copy)]
+#[allow(missing_docs)]
+pub enum RepositoryState {
+    Clean,
+    Merge,
+    Revert,
+    RevertSequence,
+    CherryPick,
+    CherryPickSequence,
+    Bisect,
+    Rebase,
+    RebaseInteractive,
+    RebaseMerge,
+    ApplyMailbox,
+    ApplyMailboxOrRebase,
+}
+
+/// An enumeration of the possible directions for a remote.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum Direction {
+    /// Data will be fetched (read) from this remote.
+    Fetch,
+    /// Data will be pushed (written) to this remote.
+    Push,
+}
+
+/// An enumeration of the operations that can be performed for the `reset`
+/// method on a `Repository`.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum ResetType {
+    /// Move the head to the given commit.
+    Soft,
+    /// Soft plus reset the index to the commit.
+    Mixed,
+    /// Mixed plus changes in the working tree are discarded.
+    Hard,
+}
+
+/// An enumeration all possible kinds objects may have.
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
+pub enum ObjectType {
+    /// Any kind of git object
+    Any,
+    /// An object which corresponds to a git commit
+    Commit,
+    /// An object which corresponds to a git tree
+    Tree,
+    /// An object which corresponds to a git blob
+    Blob,
+    /// An object which corresponds to a git tag
+    Tag,
+}
+
+/// An enumeration of all possible kinds of references.
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
+pub enum ReferenceType {
+    /// A reference which points at an object id.
+    Direct,
+
+    /// A reference which points at another reference.
+    Symbolic,
+}
+
+/// An enumeration for the possible types of branches
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
+pub enum BranchType {
+    /// A local branch not on a remote.
+    Local,
+    /// A branch for a remote.
+    Remote,
+}
+
+/// An enumeration of the possible priority levels of a config file.
+///
+/// The levels corresponding to the escalation logic (higher to lower) when
+/// searching for config entries.
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
+pub enum ConfigLevel {
+    /// System-wide on Windows, for compatibility with portable git
+    ProgramData = 1,
+    /// System-wide configuration file, e.g. /etc/gitconfig
+    System,
+    /// XDG-compatible configuration file, e.g. ~/.config/git/config
+    XDG,
+    /// User-specific configuration, e.g. ~/.gitconfig
+    Global,
+    /// Repository specific config, e.g. $PWD/.git/config
+    Local,
+    /// Application specific configuration file
+    App,
+    /// Highest level available
+    Highest = -1,
+}
+
+/// Merge file favor options for `MergeOptions` instruct the file-level
+/// merging functionality how to deal with conflicting regions of the files.
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
+pub enum FileFavor {
+    /// When a region of a file is changed in both branches, a conflict will be
+    /// recorded in the index so that git_checkout can produce a merge file with
+    /// conflict markers in the working directory. This is the default.
+    Normal,
+    /// When a region of a file is changed in both branches, the file created
+    /// in the index will contain the "ours" side of any conflicting region.
+    /// The index will not record a conflict.
+    Ours,
+    /// When a region of a file is changed in both branches, the file created
+    /// in the index will contain the "theirs" side of any conflicting region.
+    /// The index will not record a conflict.
+    Theirs,
+    /// When a region of a file is changed in both branches, the file created
+    /// in the index will contain each unique line from each side, which has
+    /// the result of combining both files. The index will not record a conflict.
+    Union,
+}
+
+bitflags! {
+    /// Orderings that may be specified for Revwalk iteration.
+    pub struct Sort: u32 {
+        /// Sort the repository contents in no particular ordering.
+        ///
+        /// This sorting is arbitrary, implementation-specific, and subject to
+        /// change at any time. This is the default sorting for new walkers.
+        const NONE = raw::GIT_SORT_NONE as u32;
+
+        /// Sort the repository contents in topological order (children before
+        /// parents).
+        ///
+        /// This sorting mode can be combined with time sorting.
+        const TOPOLOGICAL = raw::GIT_SORT_TOPOLOGICAL as u32;
+
+        /// Sort the repository contents by commit time.
+        ///
+        /// This sorting mode can be combined with topological sorting.
+        const TIME = raw::GIT_SORT_TIME as u32;
+
+        /// Iterate through the repository contents in reverse order.
+        ///
+        /// This sorting mode can be combined with any others.
+        const REVERSE = raw::GIT_SORT_REVERSE as u32;
+    }
+}
+
+impl Sort {
+    is_bit_set!(is_none, Sort::NONE);
+    is_bit_set!(is_topological, Sort::TOPOLOGICAL);
+    is_bit_set!(is_time, Sort::TIME);
+    is_bit_set!(is_reverse, Sort::REVERSE);
+}
+
+bitflags! {
+    /// Types of credentials that can be requested by a credential callback.
+    pub struct CredentialType: u32 {
+        #[allow(missing_docs)]
+        const USER_PASS_PLAINTEXT = raw::GIT_CREDTYPE_USERPASS_PLAINTEXT as u32;
+        #[allow(missing_docs)]
+        const SSH_KEY = raw::GIT_CREDTYPE_SSH_KEY as u32;
+        #[allow(missing_docs)]
+        const SSH_MEMORY = raw::GIT_CREDTYPE_SSH_MEMORY as u32;
+        #[allow(missing_docs)]
+        const SSH_CUSTOM = raw::GIT_CREDTYPE_SSH_CUSTOM as u32;
+        #[allow(missing_docs)]
+        const DEFAULT = raw::GIT_CREDTYPE_DEFAULT as u32;
+        #[allow(missing_docs)]
+        const SSH_INTERACTIVE = raw::GIT_CREDTYPE_SSH_INTERACTIVE as u32;
+        #[allow(missing_docs)]
+        const USERNAME = raw::GIT_CREDTYPE_USERNAME as u32;
+    }
+}
+
+impl CredentialType {
+    is_bit_set!(is_user_pass_plaintext, CredentialType::USER_PASS_PLAINTEXT);
+    is_bit_set!(is_ssh_key, CredentialType::SSH_KEY);
+    is_bit_set!(is_ssh_memory, CredentialType::SSH_MEMORY);
+    is_bit_set!(is_ssh_custom, CredentialType::SSH_CUSTOM);
+    is_bit_set!(is_default, CredentialType::DEFAULT);
+    is_bit_set!(is_ssh_interactive, CredentialType::SSH_INTERACTIVE);
+    is_bit_set!(is_username, CredentialType::USERNAME);
+}
+
+impl Default for CredentialType {
+    fn default() -> Self {
+        CredentialType::DEFAULT
+    }
+}
+
+bitflags! {
+    /// Flags for the `flags` field of an IndexEntry.
+    pub struct IndexEntryFlag: u16 {
+        /// Set when the `extended_flags` field is valid.
+        const EXTENDED = raw::GIT_INDEX_ENTRY_EXTENDED as u16;
+        /// "Assume valid" flag
+        const VALID = raw::GIT_INDEX_ENTRY_VALID as u16;
+    }
+}
+
+impl IndexEntryFlag {
+    is_bit_set!(is_extended, IndexEntryFlag::EXTENDED);
+    is_bit_set!(is_valid, IndexEntryFlag::VALID);
+}
+
+bitflags! {
+    /// Flags for the `extended_flags` field of an IndexEntry.
+    pub struct IndexEntryExtendedFlag: u16 {
+        /// An "intent to add" entry from "git add -N"
+        const INTENT_TO_ADD = raw::GIT_INDEX_ENTRY_INTENT_TO_ADD as u16;
+        /// Skip the associated worktree file, for sparse checkouts
+        const SKIP_WORKTREE = raw::GIT_INDEX_ENTRY_SKIP_WORKTREE as u16;
+
+        #[allow(missing_docs)]
+        const UPTODATE = raw::GIT_INDEX_ENTRY_UPTODATE as u16;
+    }
+}
+
+impl IndexEntryExtendedFlag {
+    is_bit_set!(is_intent_to_add, IndexEntryExtendedFlag::INTENT_TO_ADD);
+    is_bit_set!(is_skip_worktree, IndexEntryExtendedFlag::SKIP_WORKTREE);
+    is_bit_set!(is_up_to_date, IndexEntryExtendedFlag::UPTODATE);
+}
+
+bitflags! {
+    /// Flags for APIs that add files matching pathspec
+    pub struct IndexAddOption: u32 {
+        #[allow(missing_docs)]
+        const DEFAULT = raw::GIT_INDEX_ADD_DEFAULT as u32;
+        #[allow(missing_docs)]
+        const FORCE = raw::GIT_INDEX_ADD_FORCE as u32;
+        #[allow(missing_docs)]
+        const DISABLE_PATHSPEC_MATCH =
+                raw::GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH as u32;
+        #[allow(missing_docs)]
+        const CHECK_PATHSPEC = raw::GIT_INDEX_ADD_CHECK_PATHSPEC as u32;
+    }
+}
+
+impl IndexAddOption {
+    is_bit_set!(is_default, IndexAddOption::DEFAULT);
+    is_bit_set!(is_force, IndexAddOption::FORCE);
+    is_bit_set!(
+        is_disable_pathspec_match,
+        IndexAddOption::DISABLE_PATHSPEC_MATCH
+    );
+    is_bit_set!(is_check_pathspec, IndexAddOption::CHECK_PATHSPEC);
+}
+
+impl Default for IndexAddOption {
+    fn default() -> Self {
+        IndexAddOption::DEFAULT
+    }
+}
+
+bitflags! {
+    /// Flags for `Repository::open_ext`
+    pub struct RepositoryOpenFlags: u32 {
+        /// Only open the specified path; don't walk upward searching.
+        const NO_SEARCH = raw::GIT_REPOSITORY_OPEN_NO_SEARCH as u32;
+        /// Search across filesystem boundaries.
+        const CROSS_FS = raw::GIT_REPOSITORY_OPEN_CROSS_FS as u32;
+        /// Force opening as bare repository, and defer loading its config.
+        const BARE = raw::GIT_REPOSITORY_OPEN_BARE as u32;
+        /// Don't try appending `/.git` to the specified repository path.
+        const NO_DOTGIT = raw::GIT_REPOSITORY_OPEN_NO_DOTGIT as u32;
+        /// Respect environment variables like `$GIT_DIR`.
+        const FROM_ENV = raw::GIT_REPOSITORY_OPEN_FROM_ENV as u32;
+    }
+}
+
+impl RepositoryOpenFlags {
+    is_bit_set!(is_no_search, RepositoryOpenFlags::NO_SEARCH);
+    is_bit_set!(is_cross_fs, RepositoryOpenFlags::CROSS_FS);
+    is_bit_set!(is_bare, RepositoryOpenFlags::BARE);
+    is_bit_set!(is_no_dotgit, RepositoryOpenFlags::NO_DOTGIT);
+    is_bit_set!(is_from_env, RepositoryOpenFlags::FROM_ENV);
+}
+
+bitflags! {
+    /// Flags for the return value of `Repository::revparse`
+    pub struct RevparseMode: u32 {
+        /// The spec targeted a single object
+        const SINGLE = raw::GIT_REVPARSE_SINGLE as u32;
+        /// The spec targeted a range of commits
+        const RANGE = raw::GIT_REVPARSE_RANGE as u32;
+        /// The spec used the `...` operator, which invokes special semantics.
+        const MERGE_BASE = raw::GIT_REVPARSE_MERGE_BASE as u32;
+    }
+}
+
+impl RevparseMode {
+    is_bit_set!(is_no_single, RevparseMode::SINGLE);
+    is_bit_set!(is_range, RevparseMode::RANGE);
+    is_bit_set!(is_merge_base, RevparseMode::MERGE_BASE);
+}
+
+bitflags! {
+    /// The results of `merge_analysis` indicating the merge opportunities.
+    pub struct MergeAnalysis: u32 {
+        /// No merge is possible.
+        const ANALYSIS_NONE = raw::GIT_MERGE_ANALYSIS_NONE as u32;
+        /// A "normal" merge; both HEAD and the given merge input have diverged
+        /// from their common ancestor. The divergent commits must be merged.
+        const ANALYSIS_NORMAL = raw::GIT_MERGE_ANALYSIS_NORMAL as u32;
+        /// All given merge inputs are reachable from HEAD, meaning the
+        /// repository is up-to-date and no merge needs to be performed.
+        const ANALYSIS_UP_TO_DATE = raw::GIT_MERGE_ANALYSIS_UP_TO_DATE as u32;
+        /// The given merge input is a fast-forward from HEAD and no merge
+        /// needs to be performed.  Instead, the client can check out the
+        /// given merge input.
+        const ANALYSIS_FASTFORWARD = raw::GIT_MERGE_ANALYSIS_FASTFORWARD as u32;
+        /// The HEAD of the current repository is "unborn" and does not point to
+        /// a valid commit.  No merge can be performed, but the caller may wish
+        /// to simply set HEAD to the target commit(s).
+        const ANALYSIS_UNBORN = raw::GIT_MERGE_ANALYSIS_UNBORN as u32;
+    }
+}
+
+impl MergeAnalysis {
+    is_bit_set!(is_none, MergeAnalysis::ANALYSIS_NONE);
+    is_bit_set!(is_normal, MergeAnalysis::ANALYSIS_NORMAL);
+    is_bit_set!(is_up_to_date, MergeAnalysis::ANALYSIS_UP_TO_DATE);
+    is_bit_set!(is_fast_forward, MergeAnalysis::ANALYSIS_FASTFORWARD);
+    is_bit_set!(is_unborn, MergeAnalysis::ANALYSIS_UNBORN);
+}
+
+bitflags! {
+    /// The user's stated preference for merges.
+    pub struct MergePreference: u32 {
+        /// No configuration was found that suggests a preferred behavior for
+        /// merge.
+        const NONE = raw::GIT_MERGE_PREFERENCE_NONE as u32;
+        /// There is a `merge.ff=false` configuration setting, suggesting that
+        /// the user does not want to allow a fast-forward merge.
+        const NO_FAST_FORWARD = raw::GIT_MERGE_PREFERENCE_NO_FASTFORWARD as u32;
+        /// There is a `merge.ff=only` configuration setting, suggesting that
+        /// the user only wants fast-forward merges.
+        const FASTFORWARD_ONLY = raw::GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY as u32;
+    }
+}
+
+impl MergePreference {
+    is_bit_set!(is_none, MergePreference::NONE);
+    is_bit_set!(is_no_fast_forward, MergePreference::NO_FAST_FORWARD);
+    is_bit_set!(is_fastforward_only, MergePreference::FASTFORWARD_ONLY);
+}
+
+bitflags! {
+    /// Flags controlling the behavior of ODB lookup operations
+    pub struct OdbLookupFlags: u32 {
+        /// Don't call `git_odb_refresh` if the lookup fails. Useful when doing
+        /// a batch of lookup operations for objects that may legitimately not
+        /// exist. When using this flag, you may wish to manually call
+        /// `git_odb_refresh` before processing a batch of objects.
+        const NO_REFRESH = raw::GIT_ODB_LOOKUP_NO_REFRESH as u32;
+    }
+}
+
+#[cfg(test)]
+#[macro_use]
+mod test;
+#[macro_use]
+mod panic;
+mod attr;
+mod call;
+mod util;
+
+pub mod build;
+pub mod cert;
+pub mod oid_array;
+pub mod opts;
+pub mod string_array;
+pub mod transport;
+
+mod apply;
+mod blame;
+mod blob;
+mod branch;
+mod buf;
+mod cherrypick;
+mod commit;
+mod config;
+mod cred;
+mod describe;
+mod diff;
+mod email;
+mod error;
+mod index;
+mod indexer;
+mod mailmap;
+mod mempack;
+mod merge;
+mod message;
+mod note;
+mod object;
+mod odb;
+mod oid;
+mod packbuilder;
+mod patch;
+mod pathspec;
+mod proxy_options;
+mod push_update;
+mod rebase;
+mod reference;
+mod reflog;
+mod refspec;
+mod remote;
+mod remote_callbacks;
+mod repo;
+mod revert;
+mod revspec;
+mod revwalk;
+mod signature;
+mod stash;
+mod status;
+mod submodule;
+mod tag;
+mod tagforeach;
+mod time;
+mod tracing;
+mod transaction;
+mod tree;
+mod treebuilder;
+mod version;
+mod worktree;
+
+fn init() {
+    static INIT: Once = Once::new();
+
+    INIT.call_once(|| {
+        openssl_env_init();
+    });
+
+    raw::init();
+}
+
+#[cfg(all(
+    unix,
+    not(target_os = "macos"),
+    not(target_os = "ios"),
+    feature = "https"
+))]
+fn openssl_env_init() {
+    // Currently, libgit2 leverages OpenSSL for SSL support when cloning
+    // repositories over HTTPS. This means that we're picking up an OpenSSL
+    // dependency on non-Windows platforms (where it has its own HTTPS
+    // subsystem). As a result, we need to link to OpenSSL.
+    //
+    // Now actually *linking* to OpenSSL isn't so hard. We just need to make
+    // sure to use pkg-config to discover any relevant system dependencies for
+    // differences between distributions like CentOS and Ubuntu. The actual
+    // trickiness comes about when we start *distributing* the resulting
+    // binaries. Currently Cargo is distributed in binary form as nightlies,
+    // which means we're distributing a binary with OpenSSL linked in.
+    //
+    // For historical reasons, the Linux nightly builder is running a CentOS
+    // distribution in order to have as much ABI compatibility with other
+    // distributions as possible. Sadly, however, this compatibility does not
+    // extend to OpenSSL. Currently OpenSSL has two major versions, 0.9 and 1.0,
+    // which are incompatible (many ABI differences). The CentOS builder we
+    // build on has version 1.0, as do most distributions today. Some still have
+    // 0.9, however. This means that if we are to distribute the binaries built
+    // by the CentOS machine, we would only be compatible with OpenSSL 1.0 and
+    // we would fail to run (a dynamic linker error at runtime) on systems with
+    // only 9.8 installed (hopefully).
+    //
+    // But wait, the plot thickens! Apparently CentOS has dubbed their OpenSSL
+    // library as `libssl.so.10`, notably the `10` is included at the end. On
+    // the other hand Ubuntu, for example, only distributes `libssl.so`. This
+    // means that the binaries created at CentOS are hard-wired to probe for a
+    // file called `libssl.so.10` at runtime (using the LD_LIBRARY_PATH), which
+    // will not be found on ubuntu. The conclusion of this is that binaries
+    // built on CentOS cannot be distributed to Ubuntu and run successfully.
+    //
+    // There are a number of sneaky things we could do, including, but not
+    // limited to:
+    //
+    // 1. Create a shim program which runs "just before" cargo runs. The
+    //    responsibility of this shim program would be to locate `libssl.so`,
+    //    whatever it's called, on the current system, make sure there's a
+    //    symlink *somewhere* called `libssl.so.10`, and then set up
+    //    LD_LIBRARY_PATH and run the actual cargo.
+    //
+    //    This approach definitely seems unconventional, and is borderline
+    //    overkill for this problem. It's also dubious if we can find a
+    //    libssl.so reliably on the target system.
+    //
+    // 2. Somehow re-work the CentOS installation so that the linked-against
+    //    library is called libssl.so instead of libssl.so.10
+    //
+    //    The problem with this approach is that systems with 0.9 installed will
+    //    start to silently fail, due to also having libraries called libssl.so
+    //    (probably symlinked under a more appropriate version).
+    //
+    // 3. Compile Cargo against both OpenSSL 1.0 *and* OpenSSL 0.9, and
+    //    distribute both. Also make sure that the linked-against name of the
+    //    library is `libssl.so`. At runtime we determine which version is
+    //    installed, and we then the appropriate binary.
+    //
+    //    This approach clearly has drawbacks in terms of infrastructure and
+    //    feasibility.
+    //
+    // 4. Build a nightly of Cargo for each distribution we'd like to support.
+    //    You would then pick the appropriate Cargo nightly to install locally.
+    //
+    // So, with all this in mind, the decision was made to *statically* link
+    // OpenSSL. This solves any problem of relying on a downstream OpenSSL
+    // version being available. This does, however, open a can of worms related
+    // to security issues. It's generally a good idea to dynamically link
+    // OpenSSL as you'll get security updates over time without having to do
+    // anything (the system administrator will update the local openssl
+    // package). By statically linking, we're forfeiting this feature.
+    //
+    // The conclusion was made it is likely appropriate for the Cargo nightlies
+    // to statically link OpenSSL, but highly encourage distributions and
+    // packagers of Cargo to dynamically link OpenSSL. Packagers are targeting
+    // one system and are distributing to only that system, so none of the
+    // problems mentioned above would arise.
+    //
+    // In order to support this, a new package was made: openssl-static-sys.
+    // This package currently performs a fairly simple task:
+    //
+    // 1. Run pkg-config to discover where openssl is installed.
+    // 2. If openssl is installed in a nonstandard location, *and* static copies
+    //    of the libraries are available, copy them to $OUT_DIR.
+    //
+    // This library will bring in libssl.a and libcrypto.a into the local build,
+    // allowing them to be picked up by this crate. This allows us to configure
+    // our own buildbots to have pkg-config point to these local pre-built
+    // copies of a static OpenSSL (with very few dependencies) while allowing
+    // most other builds of Cargo to naturally dynamically link OpenSSL.
+    //
+    // So in summary, if you're with me so far, we've statically linked OpenSSL
+    // to the Cargo binary (or any binary, for that matter) and we're ready to
+    // distribute it to *all* linux distributions. Remember that our original
+    // intent for openssl was for HTTPS support, which implies that we need some
+    // for of CA certificate store to validate certificates. This is normally
+    // installed in a standard system location.
+    //
+    // Unfortunately, as one might imagine, OpenSSL is configured for where this
+    // standard location is at *build time*, but it often varies widely
+    // per-system. Consequently, it was discovered that OpenSSL will respect the
+    // SSL_CERT_FILE and SSL_CERT_DIR environment variables in order to assist
+    // in discovering the location of this file (hurray!).
+    //
+    // So, finally getting to the point, this function solely exists to support
+    // our static builds of OpenSSL by probing for the "standard system
+    // location" of certificates and setting relevant environment variable to
+    // point to them.
+    //
+    // Ah, and as a final note, this is only a problem on Linux, not on OS X. On
+    // OS X the OpenSSL binaries are stable enough that we can just rely on
+    // dynamic linkage (plus they have some weird modifications to OpenSSL which
+    // means we wouldn't want to link statically).
+    openssl_probe::init_ssl_cert_env_vars();
+}
+
+#[cfg(any(
+    windows,
+    target_os = "macos",
+    target_os = "ios",
+    not(feature = "https")
+))]
+fn openssl_env_init() {}
+
+unsafe fn opt_bytes<'a, T>(_anchor: &'a T, c: *const libc::c_char) -> Option<&'a [u8]> {
+    if c.is_null() {
+        None
+    } else {
+        Some(CStr::from_ptr(c).to_bytes())
+    }
+}
+
+fn opt_cstr<T: IntoCString>(o: Option<T>) -> Result<Option<CString>, Error> {
+    match o {
+        Some(s) => s.into_c_string().map(Some),
+        None => Ok(None),
+    }
+}
+
+impl ObjectType {
+    /// Convert an object type to its string representation.
+    pub fn str(&self) -> &'static str {
+        unsafe {
+            let ptr = call!(raw::git_object_type2string(*self)) as *const _;
+            let data = CStr::from_ptr(ptr).to_bytes();
+            str::from_utf8(data).unwrap()
+        }
+    }
+
+    /// Determine if the given git_object_t is a valid loose object type.
+    pub fn is_loose(&self) -> bool {
+        unsafe { call!(raw::git_object_typeisloose(*self)) == 1 }
+    }
+
+    /// Convert a raw git_object_t to an ObjectType
+    pub fn from_raw(raw: raw::git_object_t) -> Option<ObjectType> {
+        match raw {
+            raw::GIT_OBJECT_ANY => Some(ObjectType::Any),
+            raw::GIT_OBJECT_COMMIT => Some(ObjectType::Commit),
+            raw::GIT_OBJECT_TREE => Some(ObjectType::Tree),
+            raw::GIT_OBJECT_BLOB => Some(ObjectType::Blob),
+            raw::GIT_OBJECT_TAG => Some(ObjectType::Tag),
+            _ => None,
+        }
+    }
+
+    /// Convert this kind into its raw representation
+    pub fn raw(&self) -> raw::git_object_t {
+        call::convert(self)
+    }
+
+    /// Convert a string object type representation to its object type.
+    pub fn from_str(s: &str) -> Option<ObjectType> {
+        let raw = unsafe { call!(raw::git_object_string2type(CString::new(s).unwrap())) };
+        ObjectType::from_raw(raw)
+    }
+}
+
+impl fmt::Display for ObjectType {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.str().fmt(f)
+    }
+}
+
+impl ReferenceType {
+    /// Convert an object type to its string representation.
+    pub fn str(&self) -> &'static str {
+        match self {
+            ReferenceType::Direct => "direct",
+            ReferenceType::Symbolic => "symbolic",
+        }
+    }
+
+    /// Convert a raw git_reference_t to a ReferenceType.
+    pub fn from_raw(raw: raw::git_reference_t) -> Option<ReferenceType> {
+        match raw {
+            raw::GIT_REFERENCE_DIRECT => Some(ReferenceType::Direct),
+            raw::GIT_REFERENCE_SYMBOLIC => Some(ReferenceType::Symbolic),
+            _ => None,
+        }
+    }
+}
+
+impl fmt::Display for ReferenceType {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.str().fmt(f)
+    }
+}
+
+impl ConfigLevel {
+    /// Converts a raw configuration level to a ConfigLevel
+    pub fn from_raw(raw: raw::git_config_level_t) -> ConfigLevel {
+        match raw {
+            raw::GIT_CONFIG_LEVEL_PROGRAMDATA => ConfigLevel::ProgramData,
+            raw::GIT_CONFIG_LEVEL_SYSTEM => ConfigLevel::System,
+            raw::GIT_CONFIG_LEVEL_XDG => ConfigLevel::XDG,
+            raw::GIT_CONFIG_LEVEL_GLOBAL => ConfigLevel::Global,
+            raw::GIT_CONFIG_LEVEL_LOCAL => ConfigLevel::Local,
+            raw::GIT_CONFIG_LEVEL_APP => ConfigLevel::App,
+            raw::GIT_CONFIG_HIGHEST_LEVEL => ConfigLevel::Highest,
+            n => panic!("unknown config level: {}", n),
+        }
+    }
+}
+
+impl SubmoduleIgnore {
+    /// Converts a [`raw::git_submodule_ignore_t`] to a [`SubmoduleIgnore`]
+    pub fn from_raw(raw: raw::git_submodule_ignore_t) -> Self {
+        match raw {
+            raw::GIT_SUBMODULE_IGNORE_UNSPECIFIED => SubmoduleIgnore::Unspecified,
+            raw::GIT_SUBMODULE_IGNORE_NONE => SubmoduleIgnore::None,
+            raw::GIT_SUBMODULE_IGNORE_UNTRACKED => SubmoduleIgnore::Untracked,
+            raw::GIT_SUBMODULE_IGNORE_DIRTY => SubmoduleIgnore::Dirty,
+            raw::GIT_SUBMODULE_IGNORE_ALL => SubmoduleIgnore::All,
+            n => panic!("unknown submodule ignore rule: {}", n),
+        }
+    }
+}
+
+impl SubmoduleUpdate {
+    /// Converts a [`raw::git_submodule_update_t`] to a [`SubmoduleUpdate`]
+    pub fn from_raw(raw: raw::git_submodule_update_t) -> Self {
+        match raw {
+            raw::GIT_SUBMODULE_UPDATE_CHECKOUT => SubmoduleUpdate::Checkout,
+            raw::GIT_SUBMODULE_UPDATE_REBASE => SubmoduleUpdate::Rebase,
+            raw::GIT_SUBMODULE_UPDATE_MERGE => SubmoduleUpdate::Merge,
+            raw::GIT_SUBMODULE_UPDATE_NONE => SubmoduleUpdate::None,
+            raw::GIT_SUBMODULE_UPDATE_DEFAULT => SubmoduleUpdate::Default,
+            n => panic!("unknown submodule update strategy: {}", n),
+        }
+    }
+}
+
+bitflags! {
+    /// Status flags for a single file
+    ///
+    /// A combination of these values will be returned to indicate the status of
+    /// a file.  Status compares the working directory, the index, and the
+    /// current HEAD of the repository.  The `STATUS_INDEX_*` set of flags
+    /// represents the status of file in the index relative to the HEAD, and the
+    /// `STATUS_WT_*` set of flags represent the status of the file in the
+    /// working directory relative to the index.
+    pub struct Status: u32 {
+        #[allow(missing_docs)]
+        const CURRENT = raw::GIT_STATUS_CURRENT as u32;
+
+        #[allow(missing_docs)]
+        const INDEX_NEW = raw::GIT_STATUS_INDEX_NEW as u32;
+        #[allow(missing_docs)]
+        const INDEX_MODIFIED = raw::GIT_STATUS_INDEX_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const INDEX_DELETED = raw::GIT_STATUS_INDEX_DELETED as u32;
+        #[allow(missing_docs)]
+        const INDEX_RENAMED = raw::GIT_STATUS_INDEX_RENAMED as u32;
+        #[allow(missing_docs)]
+        const INDEX_TYPECHANGE = raw::GIT_STATUS_INDEX_TYPECHANGE as u32;
+
+        #[allow(missing_docs)]
+        const WT_NEW = raw::GIT_STATUS_WT_NEW as u32;
+        #[allow(missing_docs)]
+        const WT_MODIFIED = raw::GIT_STATUS_WT_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const WT_DELETED = raw::GIT_STATUS_WT_DELETED as u32;
+        #[allow(missing_docs)]
+        const WT_TYPECHANGE = raw::GIT_STATUS_WT_TYPECHANGE as u32;
+        #[allow(missing_docs)]
+        const WT_RENAMED = raw::GIT_STATUS_WT_RENAMED as u32;
+
+        #[allow(missing_docs)]
+        const IGNORED = raw::GIT_STATUS_IGNORED as u32;
+        #[allow(missing_docs)]
+        const CONFLICTED = raw::GIT_STATUS_CONFLICTED as u32;
+    }
+}
+
+impl Status {
+    is_bit_set!(is_index_new, Status::INDEX_NEW);
+    is_bit_set!(is_index_modified, Status::INDEX_MODIFIED);
+    is_bit_set!(is_index_deleted, Status::INDEX_DELETED);
+    is_bit_set!(is_index_renamed, Status::INDEX_RENAMED);
+    is_bit_set!(is_index_typechange, Status::INDEX_TYPECHANGE);
+    is_bit_set!(is_wt_new, Status::WT_NEW);
+    is_bit_set!(is_wt_modified, Status::WT_MODIFIED);
+    is_bit_set!(is_wt_deleted, Status::WT_DELETED);
+    is_bit_set!(is_wt_typechange, Status::WT_TYPECHANGE);
+    is_bit_set!(is_wt_renamed, Status::WT_RENAMED);
+    is_bit_set!(is_ignored, Status::IGNORED);
+    is_bit_set!(is_conflicted, Status::CONFLICTED);
+}
+
+bitflags! {
+    /// Mode options for RepositoryInitOptions
+    pub struct RepositoryInitMode: u32 {
+        /// Use permissions configured by umask - the default
+        const SHARED_UMASK = raw::GIT_REPOSITORY_INIT_SHARED_UMASK as u32;
+        /// Use `--shared=group` behavior, chmod'ing the new repo to be
+        /// group writable and \"g+sx\" for sticky group assignment
+        const SHARED_GROUP = raw::GIT_REPOSITORY_INIT_SHARED_GROUP as u32;
+        /// Use `--shared=all` behavior, adding world readability.
+        const SHARED_ALL = raw::GIT_REPOSITORY_INIT_SHARED_ALL as u32;
+    }
+}
+
+impl RepositoryInitMode {
+    is_bit_set!(is_shared_umask, RepositoryInitMode::SHARED_UMASK);
+    is_bit_set!(is_shared_group, RepositoryInitMode::SHARED_GROUP);
+    is_bit_set!(is_shared_all, RepositoryInitMode::SHARED_ALL);
+}
+
+/// What type of change is described by a `DiffDelta`?
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum Delta {
+    /// No changes
+    Unmodified,
+    /// Entry does not exist in old version
+    Added,
+    /// Entry does not exist in new version
+    Deleted,
+    /// Entry content changed between old and new
+    Modified,
+    /// Entry was renamed between old and new
+    Renamed,
+    /// Entry was copied from another old entry
+    Copied,
+    /// Entry is ignored item in workdir
+    Ignored,
+    /// Entry is untracked item in workdir
+    Untracked,
+    /// Type of entry changed between old and new
+    Typechange,
+    /// Entry is unreadable
+    Unreadable,
+    /// Entry in the index is conflicted
+    Conflicted,
+}
+
+/// Valid modes for index and tree entries.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum FileMode {
+    /// Unreadable
+    Unreadable,
+    /// Tree
+    Tree,
+    /// Blob
+    Blob,
+    /// Group writable blob. Obsolete mode kept for compatibility reasons
+    BlobGroupWritable,
+    /// Blob executable
+    BlobExecutable,
+    /// Link
+    Link,
+    /// Commit
+    Commit,
+}
+
+impl From<FileMode> for i32 {
+    fn from(mode: FileMode) -> i32 {
+        match mode {
+            FileMode::Unreadable => raw::GIT_FILEMODE_UNREADABLE as i32,
+            FileMode::Tree => raw::GIT_FILEMODE_TREE as i32,
+            FileMode::Blob => raw::GIT_FILEMODE_BLOB as i32,
+            FileMode::BlobGroupWritable => raw::GIT_FILEMODE_BLOB_GROUP_WRITABLE as i32,
+            FileMode::BlobExecutable => raw::GIT_FILEMODE_BLOB_EXECUTABLE as i32,
+            FileMode::Link => raw::GIT_FILEMODE_LINK as i32,
+            FileMode::Commit => raw::GIT_FILEMODE_COMMIT as i32,
+        }
+    }
+}
+
+impl From<FileMode> for u32 {
+    fn from(mode: FileMode) -> u32 {
+        match mode {
+            FileMode::Unreadable => raw::GIT_FILEMODE_UNREADABLE as u32,
+            FileMode::Tree => raw::GIT_FILEMODE_TREE as u32,
+            FileMode::Blob => raw::GIT_FILEMODE_BLOB as u32,
+            FileMode::BlobGroupWritable => raw::GIT_FILEMODE_BLOB_GROUP_WRITABLE as u32,
+            FileMode::BlobExecutable => raw::GIT_FILEMODE_BLOB_EXECUTABLE as u32,
+            FileMode::Link => raw::GIT_FILEMODE_LINK as u32,
+            FileMode::Commit => raw::GIT_FILEMODE_COMMIT as u32,
+        }
+    }
+}
+
+bitflags! {
+    /// Return codes for submodule status.
+    ///
+    /// A combination of these flags will be returned to describe the status of a
+    /// submodule.  Depending on the "ignore" property of the submodule, some of
+    /// the flags may never be returned because they indicate changes that are
+    /// supposed to be ignored.
+    ///
+    /// Submodule info is contained in 4 places: the HEAD tree, the index, config
+    /// files (both .git/config and .gitmodules), and the working directory.  Any
+    /// or all of those places might be missing information about the submodule
+    /// depending on what state the repo is in.  We consider all four places to
+    /// build the combination of status flags.
+    ///
+    /// There are four values that are not really status, but give basic info
+    /// about what sources of submodule data are available.  These will be
+    /// returned even if ignore is set to "ALL".
+    ///
+    /// * IN_HEAD   - superproject head contains submodule
+    /// * IN_INDEX  - superproject index contains submodule
+    /// * IN_CONFIG - superproject gitmodules has submodule
+    /// * IN_WD     - superproject workdir has submodule
+    ///
+    /// The following values will be returned so long as ignore is not "ALL".
+    ///
+    /// * INDEX_ADDED       - in index, not in head
+    /// * INDEX_DELETED     - in head, not in index
+    /// * INDEX_MODIFIED    - index and head don't match
+    /// * WD_UNINITIALIZED  - workdir contains empty directory
+    /// * WD_ADDED          - in workdir, not index
+    /// * WD_DELETED        - in index, not workdir
+    /// * WD_MODIFIED       - index and workdir head don't match
+    ///
+    /// The following can only be returned if ignore is "NONE" or "UNTRACKED".
+    ///
+    /// * WD_INDEX_MODIFIED - submodule workdir index is dirty
+    /// * WD_WD_MODIFIED    - submodule workdir has modified files
+    ///
+    /// Lastly, the following will only be returned for ignore "NONE".
+    ///
+    /// * WD_UNTRACKED      - workdir contains untracked files
+    pub struct SubmoduleStatus: u32 {
+        #[allow(missing_docs)]
+        const IN_HEAD = raw::GIT_SUBMODULE_STATUS_IN_HEAD as u32;
+        #[allow(missing_docs)]
+        const IN_INDEX = raw::GIT_SUBMODULE_STATUS_IN_INDEX as u32;
+        #[allow(missing_docs)]
+        const IN_CONFIG = raw::GIT_SUBMODULE_STATUS_IN_CONFIG as u32;
+        #[allow(missing_docs)]
+        const IN_WD = raw::GIT_SUBMODULE_STATUS_IN_WD as u32;
+        #[allow(missing_docs)]
+        const INDEX_ADDED = raw::GIT_SUBMODULE_STATUS_INDEX_ADDED as u32;
+        #[allow(missing_docs)]
+        const INDEX_DELETED = raw::GIT_SUBMODULE_STATUS_INDEX_DELETED as u32;
+        #[allow(missing_docs)]
+        const INDEX_MODIFIED = raw::GIT_SUBMODULE_STATUS_INDEX_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const WD_UNINITIALIZED =
+                raw::GIT_SUBMODULE_STATUS_WD_UNINITIALIZED as u32;
+        #[allow(missing_docs)]
+        const WD_ADDED = raw::GIT_SUBMODULE_STATUS_WD_ADDED as u32;
+        #[allow(missing_docs)]
+        const WD_DELETED = raw::GIT_SUBMODULE_STATUS_WD_DELETED as u32;
+        #[allow(missing_docs)]
+        const WD_MODIFIED = raw::GIT_SUBMODULE_STATUS_WD_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const WD_INDEX_MODIFIED =
+                raw::GIT_SUBMODULE_STATUS_WD_INDEX_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const WD_WD_MODIFIED = raw::GIT_SUBMODULE_STATUS_WD_WD_MODIFIED as u32;
+        #[allow(missing_docs)]
+        const WD_UNTRACKED = raw::GIT_SUBMODULE_STATUS_WD_UNTRACKED as u32;
+    }
+}
+
+impl SubmoduleStatus {
+    is_bit_set!(is_in_head, SubmoduleStatus::IN_HEAD);
+    is_bit_set!(is_in_index, SubmoduleStatus::IN_INDEX);
+    is_bit_set!(is_in_config, SubmoduleStatus::IN_CONFIG);
+    is_bit_set!(is_in_wd, SubmoduleStatus::IN_WD);
+    is_bit_set!(is_index_added, SubmoduleStatus::INDEX_ADDED);
+    is_bit_set!(is_index_deleted, SubmoduleStatus::INDEX_DELETED);
+    is_bit_set!(is_index_modified, SubmoduleStatus::INDEX_MODIFIED);
+    is_bit_set!(is_wd_uninitialized, SubmoduleStatus::WD_UNINITIALIZED);
+    is_bit_set!(is_wd_added, SubmoduleStatus::WD_ADDED);
+    is_bit_set!(is_wd_deleted, SubmoduleStatus::WD_DELETED);
+    is_bit_set!(is_wd_modified, SubmoduleStatus::WD_MODIFIED);
+    is_bit_set!(is_wd_wd_modified, SubmoduleStatus::WD_WD_MODIFIED);
+    is_bit_set!(is_wd_untracked, SubmoduleStatus::WD_UNTRACKED);
+}
+
+/// Submodule ignore values
+///
+/// These values represent settings for the `submodule.$name.ignore`
+/// configuration value which says how deeply to look at the working
+/// directory when getting the submodule status.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum SubmoduleIgnore {
+    /// Use the submodule's configuration
+    Unspecified,
+    /// Any change or untracked file is considered dirty
+    None,
+    /// Only dirty if tracked files have changed
+    Untracked,
+    /// Only dirty if HEAD has moved
+    Dirty,
+    /// Never dirty
+    All,
+}
+
+/// Submodule update values
+///
+/// These values represent settings for the `submodule.$name.update`
+/// configuration value which says how to handle `git submodule update`
+/// for this submodule. The value is usually set in the ".gitmodules"
+/// file and copied to ".git/config" when the submodule is initialized.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum SubmoduleUpdate {
+    /// The default; when a submodule is updated, checkout the new detached
+    /// HEAD to the submodule directory.
+    Checkout,
+    /// Update by rebasing the current checked out branch onto the commit from
+    /// the superproject.
+    Rebase,
+    /// Update by merging the commit in the superproject into the current
+    /// checkout out branch of the submodule.
+    Merge,
+    /// Do not update this submodule even when the commit in the superproject
+    /// is updated.
+    None,
+    /// Not used except as static initializer when we don't want any particular
+    /// update rule to be specified.
+    Default,
+}
+
+bitflags! {
+    /// ...
+    pub struct PathspecFlags: u32 {
+        /// Use the default pathspec matching configuration.
+        const DEFAULT = raw::GIT_PATHSPEC_DEFAULT as u32;
+        /// Force matching to ignore case, otherwise matching will use native
+        /// case sensitivity of the platform filesystem.
+        const IGNORE_CASE = raw::GIT_PATHSPEC_IGNORE_CASE as u32;
+        /// Force case sensitive matches, otherwise match will use the native
+        /// case sensitivity of the platform filesystem.
+        const USE_CASE = raw::GIT_PATHSPEC_USE_CASE as u32;
+        /// Disable glob patterns and just use simple string comparison for
+        /// matching.
+        const NO_GLOB = raw::GIT_PATHSPEC_NO_GLOB as u32;
+        /// Means that match functions return the error code `NotFound` if no
+        /// matches are found. By default no matches is a success.
+        const NO_MATCH_ERROR = raw::GIT_PATHSPEC_NO_MATCH_ERROR as u32;
+        /// Means that the list returned should track which patterns matched
+        /// which files so that at the end of the match we can identify patterns
+        /// that did not match any files.
+        const FIND_FAILURES = raw::GIT_PATHSPEC_FIND_FAILURES as u32;
+        /// Means that the list returned does not need to keep the actual
+        /// matching filenames. Use this to just test if there were any matches
+        /// at all or in combination with `PATHSPEC_FAILURES` to validate a
+        /// pathspec.
+        const FAILURES_ONLY = raw::GIT_PATHSPEC_FAILURES_ONLY as u32;
+    }
+}
+
+impl PathspecFlags {
+    is_bit_set!(is_default, PathspecFlags::DEFAULT);
+    is_bit_set!(is_ignore_case, PathspecFlags::IGNORE_CASE);
+    is_bit_set!(is_use_case, PathspecFlags::USE_CASE);
+    is_bit_set!(is_no_glob, PathspecFlags::NO_GLOB);
+    is_bit_set!(is_no_match_error, PathspecFlags::NO_MATCH_ERROR);
+    is_bit_set!(is_find_failures, PathspecFlags::FIND_FAILURES);
+    is_bit_set!(is_failures_only, PathspecFlags::FAILURES_ONLY);
+}
+
+impl Default for PathspecFlags {
+    fn default() -> Self {
+        PathspecFlags::DEFAULT
+    }
+}
+
+bitflags! {
+    /// Types of notifications emitted from checkouts.
+    pub struct CheckoutNotificationType: u32 {
+        /// Notification about a conflict.
+        const CONFLICT = raw::GIT_CHECKOUT_NOTIFY_CONFLICT as u32;
+        /// Notification about a dirty file.
+        const DIRTY = raw::GIT_CHECKOUT_NOTIFY_DIRTY as u32;
+        /// Notification about an updated file.
+        const UPDATED = raw::GIT_CHECKOUT_NOTIFY_UPDATED as u32;
+        /// Notification about an untracked file.
+        const UNTRACKED = raw::GIT_CHECKOUT_NOTIFY_UNTRACKED as u32;
+        /// Notification about an ignored file.
+        const IGNORED = raw::GIT_CHECKOUT_NOTIFY_IGNORED as u32;
+    }
+}
+
+impl CheckoutNotificationType {
+    is_bit_set!(is_conflict, CheckoutNotificationType::CONFLICT);
+    is_bit_set!(is_dirty, CheckoutNotificationType::DIRTY);
+    is_bit_set!(is_updated, CheckoutNotificationType::UPDATED);
+    is_bit_set!(is_untracked, CheckoutNotificationType::UNTRACKED);
+    is_bit_set!(is_ignored, CheckoutNotificationType::IGNORED);
+}
+
+/// Possible output formats for diff data
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum DiffFormat {
+    /// full git diff
+    Patch,
+    /// just the headers of the patch
+    PatchHeader,
+    /// like git diff --raw
+    Raw,
+    /// like git diff --name-only
+    NameOnly,
+    /// like git diff --name-status
+    NameStatus,
+    /// git diff as used by git patch-id
+    PatchId,
+}
+
+bitflags! {
+    /// Formatting options for diff stats
+    pub struct DiffStatsFormat: raw::git_diff_stats_format_t {
+        /// Don't generate any stats
+        const NONE = raw::GIT_DIFF_STATS_NONE;
+        /// Equivalent of `--stat` in git
+        const FULL = raw::GIT_DIFF_STATS_FULL;
+        /// Equivalent of `--shortstat` in git
+        const SHORT = raw::GIT_DIFF_STATS_SHORT;
+        /// Equivalent of `--numstat` in git
+        const NUMBER = raw::GIT_DIFF_STATS_NUMBER;
+        /// Extended header information such as creations, renames and mode
+        /// changes, equivalent of `--summary` in git
+        const INCLUDE_SUMMARY = raw::GIT_DIFF_STATS_INCLUDE_SUMMARY;
+    }
+}
+
+impl DiffStatsFormat {
+    is_bit_set!(is_none, DiffStatsFormat::NONE);
+    is_bit_set!(is_full, DiffStatsFormat::FULL);
+    is_bit_set!(is_short, DiffStatsFormat::SHORT);
+    is_bit_set!(is_number, DiffStatsFormat::NUMBER);
+    is_bit_set!(is_include_summary, DiffStatsFormat::INCLUDE_SUMMARY);
+}
+
+/// Automatic tag following options.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum AutotagOption {
+    /// Use the setting from the remote's configuration
+    Unspecified,
+    /// Ask the server for tags pointing to objects we're already downloading
+    Auto,
+    /// Don't ask for any tags beyond the refspecs
+    None,
+    /// Ask for all the tags
+    All,
+}
+
+/// Configuration for how pruning is done on a fetch
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum FetchPrune {
+    /// Use the setting from the configuration
+    Unspecified,
+    /// Force pruning on
+    On,
+    /// Force pruning off
+    Off,
+}
+
+#[allow(missing_docs)]
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum StashApplyProgress {
+    /// None
+    None,
+    /// Loading the stashed data from the object database
+    LoadingStash,
+    /// The stored index is being analyzed
+    AnalyzeIndex,
+    /// The modified files are being analyzed
+    AnalyzeModified,
+    /// The untracked and ignored files are being analyzed
+    AnalyzeUntracked,
+    /// The untracked files are being written to disk
+    CheckoutUntracked,
+    /// The modified files are being written to disk
+    CheckoutModified,
+    /// The stash was applied successfully
+    Done,
+}
+
+bitflags! {
+    #[allow(missing_docs)]
+    pub struct StashApplyFlags: u32 {
+        #[allow(missing_docs)]
+        const DEFAULT = raw::GIT_STASH_APPLY_DEFAULT as u32;
+        /// Try to reinstate not only the working tree's changes,
+        /// but also the index's changes.
+        const REINSTATE_INDEX = raw::GIT_STASH_APPLY_REINSTATE_INDEX as u32;
+    }
+}
+
+impl StashApplyFlags {
+    is_bit_set!(is_default, StashApplyFlags::DEFAULT);
+    is_bit_set!(is_reinstate_index, StashApplyFlags::REINSTATE_INDEX);
+}
+
+impl Default for StashApplyFlags {
+    fn default() -> Self {
+        StashApplyFlags::DEFAULT
+    }
+}
+
+bitflags! {
+    #[allow(missing_docs)]
+    pub struct StashFlags: u32 {
+        #[allow(missing_docs)]
+        const DEFAULT = raw::GIT_STASH_DEFAULT as u32;
+        /// All changes already added to the index are left intact in
+        /// the working directory
+        const KEEP_INDEX = raw::GIT_STASH_KEEP_INDEX as u32;
+        /// All untracked files are also stashed and then cleaned up
+        /// from the working directory
+        const INCLUDE_UNTRACKED = raw::GIT_STASH_INCLUDE_UNTRACKED as u32;
+        /// All ignored files are also stashed and then cleaned up from
+        /// the working directory
+        const INCLUDE_IGNORED = raw::GIT_STASH_INCLUDE_IGNORED as u32;
+    }
+}
+
+impl StashFlags {
+    is_bit_set!(is_default, StashFlags::DEFAULT);
+    is_bit_set!(is_keep_index, StashFlags::KEEP_INDEX);
+    is_bit_set!(is_include_untracked, StashFlags::INCLUDE_UNTRACKED);
+    is_bit_set!(is_include_ignored, StashFlags::INCLUDE_IGNORED);
+}
+
+impl Default for StashFlags {
+    fn default() -> Self {
+        StashFlags::DEFAULT
+    }
+}
+
+bitflags! {
+    #[allow(missing_docs)]
+    pub struct AttrCheckFlags: u32 {
+        /// Check the working directory, then the index.
+        const FILE_THEN_INDEX = raw::GIT_ATTR_CHECK_FILE_THEN_INDEX as u32;
+        /// Check the index, then the working directory.
+        const INDEX_THEN_FILE = raw::GIT_ATTR_CHECK_INDEX_THEN_FILE as u32;
+        /// Check the index only.
+        const INDEX_ONLY = raw::GIT_ATTR_CHECK_INDEX_ONLY as u32;
+        /// Do not use the system gitattributes file.
+        const NO_SYSTEM = raw::GIT_ATTR_CHECK_NO_SYSTEM as u32;
+    }
+}
+
+impl Default for AttrCheckFlags {
+    fn default() -> Self {
+        AttrCheckFlags::FILE_THEN_INDEX
+    }
+}
+
+bitflags! {
+    #[allow(missing_docs)]
+    pub struct DiffFlags: u32 {
+        /// File(s) treated as binary data.
+        const BINARY = raw::GIT_DIFF_FLAG_BINARY as u32;
+        /// File(s) treated as text data.
+        const NOT_BINARY = raw::GIT_DIFF_FLAG_NOT_BINARY as u32;
+        /// `id` value is known correct.
+        const VALID_ID = raw::GIT_DIFF_FLAG_VALID_ID as u32;
+        /// File exists at this side of the delta.
+        const EXISTS = raw::GIT_DIFF_FLAG_EXISTS as u32;
+    }
+}
+
+impl DiffFlags {
+    is_bit_set!(is_binary, DiffFlags::BINARY);
+    is_bit_set!(is_not_binary, DiffFlags::NOT_BINARY);
+    is_bit_set!(has_valid_id, DiffFlags::VALID_ID);
+    is_bit_set!(exists, DiffFlags::EXISTS);
+}
+
+bitflags! {
+    /// Options for [`Reference::normalize_name`].
+    pub struct ReferenceFormat: u32 {
+        /// No particular normalization.
+        const NORMAL = raw::GIT_REFERENCE_FORMAT_NORMAL as u32;
+        /// Control whether one-level refname are accepted (i.e., refnames that
+        /// do not contain multiple `/`-separated components). Those are
+        /// expected to be written only using uppercase letters and underscore
+        /// (e.g. `HEAD`, `FETCH_HEAD`).
+        const ALLOW_ONELEVEL = raw::GIT_REFERENCE_FORMAT_ALLOW_ONELEVEL as u32;
+        /// Interpret the provided name as a reference pattern for a refspec (as
+        /// used with remote repositories). If this option is enabled, the name
+        /// is allowed to contain a single `*` in place of a full pathname
+        /// components (e.g., `foo/*/bar` but not `foo/bar*`).
+        const REFSPEC_PATTERN = raw::GIT_REFERENCE_FORMAT_REFSPEC_PATTERN as u32;
+        /// Interpret the name as part of a refspec in shorthand form so the
+        /// `ALLOW_ONELEVEL` naming rules aren't enforced and `main` becomes a
+        /// valid name.
+        const REFSPEC_SHORTHAND = raw::GIT_REFERENCE_FORMAT_REFSPEC_SHORTHAND as u32;
+    }
+}
+
+impl ReferenceFormat {
+    is_bit_set!(is_allow_onelevel, ReferenceFormat::ALLOW_ONELEVEL);
+    is_bit_set!(is_refspec_pattern, ReferenceFormat::REFSPEC_PATTERN);
+    is_bit_set!(is_refspec_shorthand, ReferenceFormat::REFSPEC_SHORTHAND);
+}
+
+impl Default for ReferenceFormat {
+    fn default() -> Self {
+        ReferenceFormat::NORMAL
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{FileMode, ObjectType};
+
+    #[test]
+    fn convert() {
+        assert_eq!(ObjectType::Blob.str(), "blob");
+        assert_eq!(ObjectType::from_str("blob"), Some(ObjectType::Blob));
+        assert!(ObjectType::Blob.is_loose());
+    }
+
+    #[test]
+    fn convert_filemode() {
+        assert_eq!(i32::from(FileMode::Blob), 0o100644);
+        assert_eq!(i32::from(FileMode::BlobGroupWritable), 0o100664);
+        assert_eq!(i32::from(FileMode::BlobExecutable), 0o100755);
+        assert_eq!(u32::from(FileMode::Blob), 0o100644);
+        assert_eq!(u32::from(FileMode::BlobGroupWritable), 0o100664);
+        assert_eq!(u32::from(FileMode::BlobExecutable), 0o100755);
+    }
+}