use crate::commit::parse_git_diff_name_status;use crate::stash::GitStash;use crate::status::{DiffTreeType, GitStatus, StatusCode, TreeDiff};use crate::{Oid, RunHook, SHORT_SHA_LENGTH};use anyhow::{Context as _, Result, anyhow, bail};use collections::HashMap;use futures::channel::oneshot;use futures::future::BoxFuture;use futures::io::BufWriter;use futures::{AsyncWriteExt, FutureExt as _, select_biased};use git2::{BranchType, ErrorCode};use gpui::{AppContext as _, AsyncApp, BackgroundExecutor, SharedString, Task};use parking_lot::Mutex;use rope::Rope;use schemars::JsonSchema;use serde::Deserialize;use smallvec::SmallVec;use smol::channel::Sender;use smol::io::{AsyncBufReadExt, AsyncReadExt, BufReader};use text::LineEnding; use std::collections::HashSet;use std::ffi::{OsStr, OsString};use std::sync::atomic::AtomicBool; use std::process::ExitStatus;use std::str::FromStr;use std::{    cmp::Ordering,    future,    path::{Path, PathBuf},    sync::Arc,};use sum_tree::MapSeekTarget;use thiserror::Error;use util::command::{Stdio, new_command};use util::paths::PathStyle;use util::rel_path::RelPath;use util::{ResultExt, paths};use uuid::Uuid; pub use askpass::{AskPassDelegate, AskPassResult, AskPassSession}; pub const REMOTE_CANCELLED_BY_USER: &str = "Operation cancelled by user"; /// Format string used in graph log to get initial data for the git graph/// %H - Full commit hash/// %P - Parent hashes/// %D - Ref names/// %x00 - Null byte separator, used to split up commit datastatic GRAPH_COMMIT_FORMAT: &str = "--format=%H%x00%P%x00%D"; /// Used to get commits that match with a search/// %H - Full commit hashstatic SEARCH_COMMIT_FORMAT: &str = "--format=%H"; /// Number of commits to load per chunk for the git graph.pub const GRAPH_CHUNK_SIZE: usize = 1000; /// Default value for the `git.worktree_directory` setting.pub const DEFAULT_WORKTREE_DIRECTORY: &str = "../worktrees"; /// Determine the original (main) repository's working directory.////// For linked worktrees, `common_dir` differs from `repository_dir` and/// points to the main repo's `.git` directory, so we can derive the main/// repo's working directory from it. For normal repos and submodules,/// `common_dir` equals `repository_dir`, and the original repo is simply/// `work_directory` itself.pub fn original_repo_path(    work_directory: &Path,    common_dir: &Path,    repository_dir: &Path,) -> PathBuf {    if common_dir != repository_dir {        original_repo_path_from_common_dir(common_dir)    } else {        work_directory.to_path_buf()    }} /// Given the git common directory (from `commondir()`), derive the original/// repository's working directory.////// For a standard checkout, `common_dir` is `<work_dir>/.git`, so the parent/// is the working directory. For a git worktree, `common_dir` is the **main**/// repo's `.git` directory, so the parent is the original repo's working directory.////// Falls back to returning `common_dir` itself if it doesn't end with `.git`/// (e.g. bare repos or unusual layouts).pub fn original_repo_path_from_common_dir(common_dir: &Path) -> PathBuf {    if common_dir.file_name() == Some(OsStr::new(".git")) {        common_dir            .parent()            .map(|p| p.to_path_buf())            .unwrap_or_else(|| common_dir.to_path_buf())    } else {        common_dir.to_path_buf()    }} /// Commit data needed for the git graph visualization.#[derive(Debug, Clone)]pub struct GraphCommitData {    pub sha: Oid,    /// Most commits have a single parent, so we use a SmallVec to avoid allocations.    pub parents: SmallVec<[Oid; 1]>,    pub author_name: SharedString,    pub author_email: SharedString,    pub commit_timestamp: i64,    pub subject: SharedString,} #[derive(Debug)]pub struct InitialGraphCommitData {    pub sha: Oid,    pub parents: SmallVec<[Oid; 1]>,    pub ref_names: Vec<SharedString>,} struct CommitDataRequest {    sha: Oid,    response_tx: oneshot::Sender<Result<GraphCommitData>>,} pub struct CommitDataReader {    request_tx: smol::channel::Sender<CommitDataRequest>,    _task: Task<()>,} impl CommitDataReader {    pub async fn read(&self, sha: Oid) -> Result<GraphCommitData> {        let (response_tx, response_rx) = oneshot::channel();        self.request_tx            .send(CommitDataRequest { sha, response_tx })            .await            .map_err(|_| anyhow!("commit data reader task closed"))?;        response_rx            .await            .map_err(|_| anyhow!("commit data reader task dropped response"))?    }} fn parse_cat_file_commit(sha: Oid, content: &str) -> Option<GraphCommitData> {    let mut parents = SmallVec::new();    let mut author_name = SharedString::default();    let mut author_email = SharedString::default();    let mut commit_timestamp = 0i64;    let mut in_headers = true;    let mut subject = None;     for line in content.lines() {        if in_headers {            if line.is_empty() {                in_headers = false;                continue;            }             if let Some(parent_sha) = line.strip_prefix("parent ") {                if let Ok(oid) = Oid::from_str(parent_sha.trim()) {                    parents.push(oid);                }            } else if let Some(author_line) = line.strip_prefix("author ") {                if let Some((name_email, _timestamp_tz)) = author_line.rsplit_once(' ') {                    if let Some((name_email, timestamp_str)) = name_email.rsplit_once(' ') {                        if let Ok(ts) = timestamp_str.parse::<i64>() {                            commit_timestamp = ts;                        }                        if let Some((name, email)) = name_email.rsplit_once(" <") {                            author_name = SharedString::from(name.to_string());                            author_email =                                SharedString::from(email.trim_end_matches('>').to_string());                        }                    }                }            }        } else if subject.is_none() {            subject = Some(SharedString::from(line.to_string()));        }    }     Some(GraphCommitData {        sha,        parents,        author_name,        author_email,        commit_timestamp,        subject: subject.unwrap_or_default(),    })} #[derive(Clone, Debug, Hash, PartialEq, Eq)]pub struct Branch {    pub is_head: bool,    pub ref_name: SharedString,    pub upstream: Option<Upstream>,    pub most_recent_commit: Option<CommitSummary>,} impl Branch {    pub fn name(&self) -> &str {        self.ref_name            .as_ref()            .strip_prefix("refs/heads/")            .or_else(|| self.ref_name.as_ref().strip_prefix("refs/remotes/"))            .unwrap_or(self.ref_name.as_ref())    }     pub fn is_remote(&self) -> bool {        self.ref_name.starts_with("refs/remotes/")    }     pub fn remote_name(&self) -> Option<&str> {        self.ref_name            .strip_prefix("refs/remotes/")            .and_then(|stripped| stripped.split("/").next())    }     pub fn tracking_status(&self) -> Option<UpstreamTrackingStatus> {        self.upstream            .as_ref()            .and_then(|upstream| upstream.tracking.status())    }     pub fn priority_key(&self) -> (bool, Option<i64>) {        (            self.is_head,            self.most_recent_commit                .as_ref()                .map(|commit| commit.commit_timestamp),        )    }} #[derive(Clone, Debug, Hash, PartialEq, Eq)]pub struct Worktree {    pub path: PathBuf,    pub ref_name: Option<SharedString>,    // todo(git_worktree) This type should be a Oid    pub sha: SharedString,    pub is_main: bool,} /// Describes how a new worktree should choose or create its checked-out HEAD.#[derive(Clone, Debug, Hash, PartialEq, Eq)]pub enum CreateWorktreeTarget {    /// Check out an existing local branch in the new worktree.    ExistingBranch {        /// The existing local branch to check out.        branch_name: String,    },    /// Create a new local branch for the new worktree.    NewBranch {        /// The new local branch to create and check out.        branch_name: String,        /// The commit or ref to create the branch from. Uses `HEAD` when `None`.        base_sha: Option<String>,    },    /// Check out a commit or ref in detached HEAD state.    Detached {        /// The commit or ref to check out. Uses `HEAD` when `None`.        base_sha: Option<String>,    },} impl CreateWorktreeTarget {    pub fn branch_name(&self) -> Option<&str> {        match self {            Self::ExistingBranch { branch_name } | Self::NewBranch { branch_name, .. } => {                Some(branch_name)            }            Self::Detached { .. } => None,        }    }} impl Worktree {    /// Returns the branch name if the worktree is attached to a branch.    pub fn branch_name(&self) -> Option<&str> {        self.ref_name.as_ref().map(|ref_name| {            ref_name                .strip_prefix("refs/heads/")                .or_else(|| ref_name.strip_prefix("refs/remotes/"))                .unwrap_or(ref_name)        })    }     /// Returns a display name for the worktree, suitable for use in the UI.    ///    /// If the worktree is attached to a branch, returns the branch name.    /// Otherwise, returns the short SHA of the worktree's HEAD commit.    pub fn display_name(&self) -> &str {        self.branch_name()            .unwrap_or(&self.sha[..self.sha.len().min(SHORT_SHA_LENGTH)])    }} pub fn parse_worktrees_from_str<T: AsRef<str>>(raw_worktrees: T) -> Vec<Worktree> {    let mut worktrees = Vec::new();    let mut is_first = true;    let normalized = raw_worktrees.as_ref().replace("\r\n", "\n");    let entries = normalized.split("\n\n");    for entry in entries {        let mut path = None;        let mut sha = None;        let mut ref_name = None;         for line in entry.lines() {            let line = line.trim();            if line.is_empty() {                continue;            }            if let Some(rest) = line.strip_prefix("worktree ") {                path = Some(rest.to_string());            } else if let Some(rest) = line.strip_prefix("HEAD ") {                sha = Some(rest.to_string());            } else if let Some(rest) = line.strip_prefix("branch ") {                ref_name = Some(rest.to_string());            }            // Ignore other lines: detached, bare, locked, prunable, etc.        }         if let (Some(path), Some(sha)) = (path, sha) {            worktrees.push(Worktree {                path: PathBuf::from(path),                ref_name: ref_name.map(Into::into),                sha: sha.into(),                is_main: is_first,            });            is_first = false;        }    }     worktrees} #[derive(Clone, Debug, Hash, PartialEq, Eq)]pub struct Upstream {    pub ref_name: SharedString,    pub tracking: UpstreamTracking,} impl Upstream {    pub fn is_remote(&self) -> bool {        self.remote_name().is_some()    }     pub fn remote_name(&self) -> Option<&str> {        self.ref_name            .strip_prefix("refs/remotes/")            .and_then(|stripped| stripped.split("/").next())    }     pub fn stripped_ref_name(&self) -> Option<&str> {        self.ref_name.strip_prefix("refs/remotes/")    }     pub fn branch_name(&self) -> Option<&str> {        self.ref_name            .strip_prefix("refs/remotes/")            .and_then(|stripped| stripped.split_once('/').map(|(_, name)| name))    }} #[derive(Clone, Copy, Default)]pub struct CommitOptions {    pub amend: bool,    pub signoff: bool,    pub allow_empty: bool,} #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]pub enum UpstreamTracking {    /// Remote ref not present in local repository.    Gone,    /// Remote ref present in local repository (fetched from remote).    Tracked(UpstreamTrackingStatus),} impl From<UpstreamTrackingStatus> for UpstreamTracking {    fn from(status: UpstreamTrackingStatus) -> Self {        UpstreamTracking::Tracked(status)    }} impl UpstreamTracking {    pub fn is_gone(&self) -> bool {        matches!(self, UpstreamTracking::Gone)    }     pub fn status(&self) -> Option<UpstreamTrackingStatus> {        match self {            UpstreamTracking::Gone => None,            UpstreamTracking::Tracked(status) => Some(*status),        }    }} #[derive(Debug, Clone)]pub struct RemoteCommandOutput {    pub stdout: String,    pub stderr: String,} impl RemoteCommandOutput {    pub fn is_empty(&self) -> bool {        self.stdout.is_empty() && self.stderr.is_empty()    }} #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]pub struct UpstreamTrackingStatus {    pub ahead: u32,    pub behind: u32,} #[derive(Clone, Debug, Hash, PartialEq, Eq)]pub struct CommitSummary {    pub sha: SharedString,    pub subject: SharedString,    /// This is a unix timestamp    pub commit_timestamp: i64,    pub author_name: SharedString,    pub has_parent: bool,} #[derive(Clone, Debug, Default, Hash, PartialEq, Eq)]pub struct CommitDetails {    pub sha: SharedString,    pub message: SharedString,    pub commit_timestamp: i64,    pub author_email: SharedString,    pub author_name: SharedString,} #[derive(Clone, Debug, Hash, PartialEq, Eq)]pub struct FileHistoryEntry {    pub sha: SharedString,    pub subject: SharedString,    pub message: SharedString,    pub commit_timestamp: i64,    pub author_name: SharedString,    pub author_email: SharedString,} #[derive(Debug, Clone)]pub struct FileHistory {    pub entries: Vec<FileHistoryEntry>,    pub path: RepoPath,} #[derive(Debug)]pub struct CommitDiff {    pub files: Vec<CommitFile>,} #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]pub enum CommitFileStatus {    Added,    Modified,    Deleted,} #[derive(Debug)]pub struct CommitFile {    pub path: RepoPath,    pub old_text: Option<String>,    pub new_text: Option<String>,    pub is_binary: bool,} impl CommitFile {    pub fn status(&self) -> CommitFileStatus {        match (&self.old_text, &self.new_text) {            (None, Some(_)) => CommitFileStatus::Added,            (Some(_), None) => CommitFileStatus::Deleted,            _ => CommitFileStatus::Modified,        }    }} impl CommitDetails {    pub fn short_sha(&self) -> SharedString {        self.sha[..SHORT_SHA_LENGTH].to_string().into()    }} /// Detects if content is binary by checking for NUL bytes in the first 8000 bytes./// This matches git's binary detection heuristic.pub fn is_binary_content(content: &[u8]) -> bool {    let check_len = content.len().min(8000);    content[..check_len].contains(&0)} #[derive(Debug, Clone, Hash, PartialEq, Eq)]pub struct Remote {    pub name: SharedString,} pub enum ResetMode {

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