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#![allow(unused)]use anyhow::{anyhow, bail};use cargo_metadata::{    camino::{Utf8Component, Utf8Path, Utf8PathBuf},    DependencyKind, Metadata, Package,};use dia_semver::Semver;use git_lock::File;use git_repository::{    hash::ObjectId,    object,    odb::{pack, Find, FindExt},    refs::{file, packed},    Repository,};use std::{collections::BTreeSet, convert::TryInto, path::PathBuf}; struct State {    root: Utf8PathBuf,    seen: BTreeSet<String>,    repo: Repository,    packed_refs: Option<packed::Buffer>,} impl State {    fn new(repo_path: impl Into<PathBuf>) -> anyhow::Result<Self> {        let root = repo_path.into();        let repo = git_repository::discover(&root)?;        let packed_refs = repo.refs.packed()?;        Ok(State {            root: root.try_into()?,            seen: BTreeSet::new(),            repo,            packed_refs,        })    }} pub fn release(dry_run: bool, version_bump_spec: String, crates: Vec<String>) -> anyhow::Result<()> {    if crates.is_empty() {        bail!("Please provide at least one crate name which also is a workspace member");    }    let meta = cargo_metadata::MetadataCommand::new().exec()?;    let mut state = State::new(std::env::current_dir()?)?;    for crate_name in crates {        if !is_workspace_member(&meta, &crate_name) {            bail!("Package to release must be a workspace member: '{}'", crate_name);        }        release_depth_first(dry_run, &meta, &crate_name, &version_bump_spec, &mut state)?;    }    Ok(())} fn is_workspace_member(meta: &Metadata, crate_name: &str) -> bool {    meta.packages        .iter()        .find(|p| p.name == crate_name)        .map_or(false, |p| meta.workspace_members.iter().any(|m| m == &p.id))} fn release_depth_first(    dry_run: bool,    meta: &Metadata,    crate_name: &str,    bump_spec: &str,    state: &mut State,) -> anyhow::Result<()> {    let package = meta        .packages        .iter()        .find(|p| p.name == crate_name)        .ok_or_else(|| anyhow!("workspace member must be a listed package: '{}'", crate_name))?;    for dependency in package.dependencies.iter().filter(|d| d.kind == DependencyKind::Normal) {        if state.seen.contains(&dependency.name) || !is_workspace_member(meta, &dependency.name) {            continue;        }        state.seen.insert(dependency.name.clone());        release_depth_first(dry_run, meta, &dependency.name, bump_spec, state)?;    }     if needs_release(package, state)? {        perform_release(meta, package, dry_run, bump_spec)?;    } else {        log::info!(            "{} v{}  - skipped release as it didn't change",            package.name,            package.version        );    }    Ok(())} fn perform_release(meta: &Metadata, package: &Package, dry_run: bool, bump_spec: &str) -> anyhow::Result<()> {    let new_version = bump_version(&package.version.to_string(), bump_spec)?;    log::info!("{} v{} will be released", package.name, new_version);    edit_manifest_and_fixup_dependent_crates(meta, package, &new_version, dry_run)?;    Ok(())} fn edit_manifest_and_fixup_dependent_crates(    meta: &Metadata,    package: &Package,    new_version: &Semver,    dry_run: bool,) -> anyhow::Result<()> {    let mut package_manifest_lock =        git_lock::File::acquire_to_update_resource(&package.manifest_path, git_lock::acquire::Fail::Immediately, None)?;    let packages_to_fix = meta        .workspace_members        .iter()        .filter(|id| *id != &package.id)        .map(|id| {            meta.packages                .iter()                .find(|p| &p.id == id)                .expect("workspace members are in packages")        })        .map(|p| {            git_lock::File::acquire_to_update_resource(&p.manifest_path, git_lock::acquire::Fail::Immediately, None)                .map(|l| (p, l))        })        .collect::<Result<Vec<_>, _>>()?;     let new_version = new_version.to_string();    set_manifest_version(&package.manifest_path, &new_version, &mut package_manifest_lock)?;    /// Run cargo manifest to assure everything is in order    Ok(())} fn set_manifest_version(manifest: &Utf8PathBuf, new_version: &str, out: impl std::io::Write) -> anyhow::Result<()> {    // toml_edit::Document::from_str()    todo!()} fn bump_version(version: &str, bump_spec: &str) -> anyhow::Result<Semver> {    let v = Semver::parse(version).map_err(|err| std::io::Error::new(std::io::ErrorKind::Other, err.to_string()))?;    Ok(match bump_spec {        "major" => v.new_major(),        "minor" => v.new_minor(),        "patch" => v.new_patch(),        _ => bail!("Invalid version specification: '{}'", bump_spec),    }    .expect("no overflow"))} fn needs_release(package: &Package, state: &State) -> anyhow::Result<bool> {    let version_tag_name = format!("{}-v{}", package.name, package.version);    let mut tag_ref = match state.repo.refs.find(&version_tag_name, state.packed_refs.as_ref())? {        None => {            log::info!(                "Package {} wasn't tagged with {} yet and thus needs a release",                package.name,                version_tag_name            );            return Ok(true);        }        Some(r) => r,    };    let repo_relative_crate_dir = package        .manifest_path        .parent()        .expect("parent of a file is always present")        .strip_prefix(&state.root)        .expect("workspace members are releative to the root directory");     let target = peel_ref_fully(&mut state.repo.refs.find_existing("HEAD", None)?, state)?;    let released_target = peel_ref_fully(&mut tag_ref, state)?;     let mut buf = Vec::new();     let current_dir_id = find_directory_id_in_tree(        repo_relative_crate_dir,        resolve_tree_id_from_ref_target(target, &state.repo, &mut buf)?,        &state.repo,        &mut buf,    )?;    let released_dir_id = find_directory_id_in_tree(        repo_relative_crate_dir,        resolve_tree_id_from_ref_target(released_target, &state.repo, &mut buf)?,        &state.repo,        &mut buf,    )?;     Ok(released_dir_id != current_dir_id)} fn find_directory_id_in_tree(    path: &Utf8Path,    id: ObjectId,    repo: &Repository,    buf: &mut Vec<u8>,) -> anyhow::Result<ObjectId> {    let mut tree_id = None::<ObjectId>;     for component in path.components() {        match component {            Utf8Component::Normal(c) => {                let mut tree_iter = repo                    .odb                    .find_existing(tree_id.take().unwrap_or(id), buf, &mut pack::cache::Never)?                    .into_tree_iter()                    .expect("tree");                tree_id = tree_iter                    .find_map(|e| {                        let e = e.expect("tree parseable");                        (e.filename == c).then(|| e.oid)                    })                    .map(ToOwned::to_owned);                if tree_id.is_none() {                    break;                }            }            _ => panic!(                "only normal components are expected in relative manifest paths: '{}'",                path            ),        }    }     tree_id.ok_or_else(|| anyhow!("path '{}' didn't exist in tree {}", path, id))} fn peel_ref_fully(reference: &mut file::Reference<'_>, state: &State) -> anyhow::Result<ObjectId> {    reference        .peel_to_id_in_place(&state.repo.refs, state.packed_refs.as_ref(), |oid, buf| {            state                .repo                .odb                .find(oid, buf, &mut pack::cache::Never)                .map(|r| r.map(|obj| (obj.kind, obj.data)))        })        .map_err(Into::into)} /// Note that borrowchk doesn't like us to return an immutable, decoded tree which we would otherwise do. Chalk/polonius could allow that,/// preventing a duplicate lookup.fn resolve_tree_id_from_ref_target(mut id: ObjectId, repo: &Repository, buf: &mut Vec<u8>) -> anyhow::Result<ObjectId> {    let mut cursor = repo.odb.find_existing(id, buf, &mut pack::cache::Never)?;    loop {        match cursor.kind {            object::Kind::Tree => return Ok(id),            object::Kind::Commit => {                id = cursor.into_commit_iter().expect("commit").tree_id().expect("id");                cursor = repo.odb.find_existing(id, buf, &mut pack::cache::Never)?;            }            object::Kind::Tag | object::Kind::Blob => {                bail!(                    "A ref ultimately points to a blob or tag {} but we need a tree, peeling takes care of tags",                    id                )            }        }    }}