// Copyright 2020-2023 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use std::fs;use std::io;use std::io::Write as _;use std::num::NonZeroU32;use std::path::Path; use jj_lib::git;use jj_lib::git::GitFetch;use jj_lib::ref_name::RefNameBuf;use jj_lib::ref_name::RemoteName;use jj_lib::ref_name::RemoteNameBuf;use jj_lib::repo::Repo as _;use jj_lib::str_util::StringPattern;use jj_lib::workspace::Workspace; use super::write_repository_level_trunk_alias;use crate::cli_util::CommandHelper;use crate::cli_util::WorkspaceCommandHelper;use crate::command_error::cli_error;use crate::command_error::user_error;use crate::command_error::user_error_with_message;use crate::command_error::CommandError;use crate::commands::git::maybe_add_gitignore;use crate::git_util::absolute_git_url;use crate::git_util::print_git_import_stats;use crate::git_util::with_remote_git_callbacks;use crate::ui::Ui; /// Create a new repo backed by a clone of a Git repo////// The Git repo will be a bare git repo stored inside the `.jj/` directory.#[derive(clap::Args, Clone, Debug)]pub struct GitCloneArgs { /// URL or path of the Git repo to clone /// /// Local path will be resolved to absolute form. #[arg(value_hint = clap::ValueHint::Url)] source: String, /// Specifies the target directory for the Jujutsu repository clone. /// If not provided, defaults to a directory named after the last component /// of the source URL. The full directory path will be created if it /// doesn't exist. #[arg(value_hint = clap::ValueHint::DirPath)] destination: Option<String>, /// Name of the newly created remote #[arg(long = "remote", default_value = "origin")] remote_name: RemoteNameBuf, /// Whether or not to colocate the Jujutsu repo with the git repo #[arg(long)] colocate: bool, /// Create a shallow clone of the given depth #[arg(long)] depth: Option<NonZeroU32>,} fn clone_destination_for_source(source: &str) -> Option<&str> { let destination = source.strip_suffix(".git").unwrap_or(source); let destination = destination.strip_suffix('/').unwrap_or(destination); destination .rsplit_once(&['/', '\\', ':'][..]) .map(|(_, name)| name)} fn is_empty_dir(path: &Path) -> bool { if let Ok(mut entries) = path.read_dir() { entries.next().is_none() } else { false }} pub fn cmd_git_clone( ui: &mut Ui, command: &CommandHelper, args: &GitCloneArgs,) -> Result<(), CommandError> { let remote_name = &args.remote_name; if command.global_args().at_operation.is_some() { return Err(cli_error("--at-op is not respected")); } let source = absolute_git_url(command.cwd(), &args.source)?; let wc_path_str = args .destination .as_deref() .or_else(|| clone_destination_for_source(&source)) .ok_or_else(|| user_error("No destination specified and wasn't able to guess it"))?; let wc_path = command.cwd().join(wc_path_str); let wc_path_existed = wc_path.exists(); if wc_path_existed && !is_empty_dir(&wc_path) { return Err(user_error( "Destination path exists and is not an empty directory", )); } // will create a tree dir in case if was deleted after last check fs::create_dir_all(&wc_path) .map_err(|err| user_error_with_message(format!("Failed to create {wc_path_str}"), err))?; // Canonicalize because fs::remove_dir_all() doesn't seem to like e.g. // `/some/path/.` let canonical_wc_path = dunce::canonicalize(&wc_path) .map_err(|err| user_error_with_message(format!("Failed to create {wc_path_str}"), err))?; let clone_result = (|| -> Result<_, CommandError> { let workspace_command = init_workspace(ui, command, &canonical_wc_path, args.colocate)?; let mut workspace_command = configure_remote(ui, command, workspace_command, remote_name, &source)?; let default_branch = fetch_new_remote(ui, &mut workspace_command, remote_name, args.depth)?; Ok((workspace_command, default_branch)) })(); if clone_result.is_err() { let clean_up_dirs = || -> io::Result<()> { fs::remove_dir_all(canonical_wc_path.join(".jj"))?; if args.colocate { fs::remove_dir_all(canonical_wc_path.join(".git"))?; } if !wc_path_existed { fs::remove_dir(&canonical_wc_path)?; } Ok(()) }; if let Err(err) = clean_up_dirs() { writeln!( ui.warning_default(), "Failed to clean up {}: {}", canonical_wc_path.display(), err ) .ok(); } } let (mut workspace_command, default_branch) = clone_result?; if let Some(name) = &default_branch { let default_symbol = name.to_remote_symbol(remote_name); write_repository_level_trunk_alias(ui, workspace_command.repo_path(), default_symbol)?; let default_branch_remote_ref = workspace_command .repo() .view() .get_remote_bookmark(default_symbol); if let Some(commit_id) = default_branch_remote_ref.target.as_normal().cloned() { let mut checkout_tx = workspace_command.start_transaction(); // For convenience, create local bookmark as Git would do. checkout_tx.repo_mut().track_remote_bookmark(default_symbol); if let Ok(commit) = checkout_tx.repo().store().get_commit(&commit_id) { checkout_tx.check_out(&commit)?; } checkout_tx.finish(ui, "check out git remote's default branch")?; } } Ok(())} fn init_workspace( ui: &Ui, command: &CommandHelper, wc_path: &Path, colocate: bool,) -> Result<WorkspaceCommandHelper, CommandError> { let settings = command.settings_for_new_workspace(wc_path)?; let (workspace, repo) = if colocate { Workspace::init_colocated_git(&settings, wc_path)? } else { Workspace::init_internal_git(&settings, wc_path)? }; let workspace_command = command.for_workable_repo(ui, workspace, repo)?; maybe_add_gitignore(&workspace_command)?; Ok(workspace_command)} fn configure_remote( ui: &Ui, command: &CommandHelper, workspace_command: WorkspaceCommandHelper, remote_name: &RemoteName, source: &str,) -> Result<WorkspaceCommandHelper, CommandError> { git::add_remote(workspace_command.repo().store(), remote_name, source)?; // Reload workspace to apply new remote configuration to // gix::ThreadSafeRepository behind the store. let workspace = command.load_workspace_at( workspace_command.workspace_root(), workspace_command.settings(), )?; let op = workspace .repo_loader() .load_operation(workspace_command.repo().op_id())?; let repo = workspace.repo_loader().load_at(&op)?; command.for_workable_repo(ui, workspace, repo)} fn fetch_new_remote( ui: &Ui, workspace_command: &mut WorkspaceCommandHelper, remote_name: &RemoteName, depth: Option<NonZeroU32>,) -> Result<Option<RefNameBuf>, CommandError> { writeln!( ui.status(), r#"Fetching into new repo in "{}""#, workspace_command.workspace_root().display() )?; let git_settings = workspace_command.settings().git_settings()?; let mut fetch_tx = workspace_command.start_transaction(); let mut git_fetch = GitFetch::new(fetch_tx.repo_mut(), &git_settings)?; with_remote_git_callbacks(ui, |cb| { git_fetch.fetch(remote_name, &[StringPattern::everything()], cb, depth) })?; let default_branch = with_remote_git_callbacks(ui, |cb| git_fetch.get_default_branch(remote_name, cb))?; let import_stats = git_fetch.import_refs()?; print_git_import_stats(ui, fetch_tx.repo(), &import_stats, true)?; fetch_tx.finish(ui, "fetch from git remote into empty repo")?; Ok(default_branch)}
// Copyright 2020-2023 The Jujutsu Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::fs;
use std::io;
use std::io::Write as _;
use std::num::NonZeroU32;
use std::path::Path;
use jj_lib::git;
use jj_lib::git::GitFetch;
use jj_lib::ref_name::RefNameBuf;
use jj_lib::ref_name::RemoteName;
use jj_lib::ref_name::RemoteNameBuf;
use jj_lib::repo::Repo as _;
use jj_lib::str_util::StringPattern;
use jj_lib::workspace::Workspace;
use super::write_repository_level_trunk_alias;
use crate::cli_util::CommandHelper;
use crate::cli_util::WorkspaceCommandHelper;
use crate::command_error::cli_error;
use crate::command_error::user_error;
use crate::command_error::user_error_with_message;
use crate::command_error::CommandError;
use crate::commands::git::maybe_add_gitignore;
use crate::git_util::absolute_git_url;
use crate::git_util::print_git_import_stats;
use crate::git_util::with_remote_git_callbacks;
use crate::ui::Ui;
/// Create a new repo backed by a clone of a Git repo
///
/// The Git repo will be a bare git repo stored inside the `.jj/` directory.
#[derive(clap::Args, Clone, Debug)]
pub struct GitCloneArgs {
/// URL or path of the Git repo to clone
///
/// Local path will be resolved to absolute form.
#[arg(value_hint = clap::ValueHint::Url)]
source: String,
/// Specifies the target directory for the Jujutsu repository clone.
/// If not provided, defaults to a directory named after the last component
/// of the source URL. The full directory path will be created if it
/// doesn't exist.
#[arg(value_hint = clap::ValueHint::DirPath)]
destination: Option<String>,
/// Name of the newly created remote
#[arg(long = "remote", default_value = "origin")]
remote_name: RemoteNameBuf,
/// Whether or not to colocate the Jujutsu repo with the git repo
#[arg(long)]
colocate: bool,
/// Create a shallow clone of the given depth
#[arg(long)]
depth: Option<NonZeroU32>,
}
fn clone_destination_for_source(source: &str) -> Option<&str> {
let destination = source.strip_suffix(".git").unwrap_or(source);
let destination = destination.strip_suffix('/').unwrap_or(destination);
destination
.rsplit_once(&['/', '\\', ':'][..])
.map(|(_, name)| name)
}
fn is_empty_dir(path: &Path) -> bool {
if let Ok(mut entries) = path.read_dir() {
entries.next().is_none()
} else {
false
}
}
pub fn cmd_git_clone(
ui: &mut Ui,
command: &CommandHelper,
args: &GitCloneArgs,
) -> Result<(), CommandError> {
let remote_name = &args.remote_name;
if command.global_args().at_operation.is_some() {
return Err(cli_error("--at-op is not respected"));
}
let source = absolute_git_url(command.cwd(), &args.source)?;
let wc_path_str = args
.destination
.as_deref()
.or_else(|| clone_destination_for_source(&source))
.ok_or_else(|| user_error("No destination specified and wasn't able to guess it"))?;
let wc_path = command.cwd().join(wc_path_str);
let wc_path_existed = wc_path.exists();
if wc_path_existed && !is_empty_dir(&wc_path) {
return Err(user_error(
"Destination path exists and is not an empty directory",
));
}
// will create a tree dir in case if was deleted after last check
fs::create_dir_all(&wc_path)
.map_err(|err| user_error_with_message(format!("Failed to create {wc_path_str}"), err))?;
// Canonicalize because fs::remove_dir_all() doesn't seem to like e.g.
// `/some/path/.`
let canonical_wc_path = dunce::canonicalize(&wc_path)
.map_err(|err| user_error_with_message(format!("Failed to create {wc_path_str}"), err))?;
let clone_result = (|| -> Result<_, CommandError> {
let workspace_command = init_workspace(ui, command, &canonical_wc_path, args.colocate)?;
let mut workspace_command =
configure_remote(ui, command, workspace_command, remote_name, &source)?;
let default_branch = fetch_new_remote(ui, &mut workspace_command, remote_name, args.depth)?;
Ok((workspace_command, default_branch))
})();
if clone_result.is_err() {
let clean_up_dirs = || -> io::Result<()> {
fs::remove_dir_all(canonical_wc_path.join(".jj"))?;
if args.colocate {
fs::remove_dir_all(canonical_wc_path.join(".git"))?;
}
if !wc_path_existed {
fs::remove_dir(&canonical_wc_path)?;
}
Ok(())
};
if let Err(err) = clean_up_dirs() {
writeln!(
ui.warning_default(),
"Failed to clean up {}: {}",
canonical_wc_path.display(),
err
)
.ok();
}
}
let (mut workspace_command, default_branch) = clone_result?;
if let Some(name) = &default_branch {
let default_symbol = name.to_remote_symbol(remote_name);
write_repository_level_trunk_alias(ui, workspace_command.repo_path(), default_symbol)?;
let default_branch_remote_ref = workspace_command
.repo()
.view()
.get_remote_bookmark(default_symbol);
if let Some(commit_id) = default_branch_remote_ref.target.as_normal().cloned() {
let mut checkout_tx = workspace_command.start_transaction();
// For convenience, create local bookmark as Git would do.
checkout_tx.repo_mut().track_remote_bookmark(default_symbol);
if let Ok(commit) = checkout_tx.repo().store().get_commit(&commit_id) {
checkout_tx.check_out(&commit)?;
}
checkout_tx.finish(ui, "check out git remote's default branch")?;
}
}
Ok(())
}
fn init_workspace(
ui: &Ui,
command: &CommandHelper,
wc_path: &Path,
colocate: bool,
) -> Result<WorkspaceCommandHelper, CommandError> {
let settings = command.settings_for_new_workspace(wc_path)?;
let (workspace, repo) = if colocate {
Workspace::init_colocated_git(&settings, wc_path)?
} else {
Workspace::init_internal_git(&settings, wc_path)?
};
let workspace_command = command.for_workable_repo(ui, workspace, repo)?;
maybe_add_gitignore(&workspace_command)?;
Ok(workspace_command)
}
fn configure_remote(
ui: &Ui,
command: &CommandHelper,
workspace_command: WorkspaceCommandHelper,
remote_name: &RemoteName,
source: &str,
) -> Result<WorkspaceCommandHelper, CommandError> {
git::add_remote(workspace_command.repo().store(), remote_name, source)?;
// Reload workspace to apply new remote configuration to
// gix::ThreadSafeRepository behind the store.
let workspace = command.load_workspace_at(
workspace_command.workspace_root(),
workspace_command.settings(),
)?;
let op = workspace
.repo_loader()
.load_operation(workspace_command.repo().op_id())?;
let repo = workspace.repo_loader().load_at(&op)?;
command.for_workable_repo(ui, workspace, repo)
}
fn fetch_new_remote(
ui: &Ui,
workspace_command: &mut WorkspaceCommandHelper,
remote_name: &RemoteName,
depth: Option<NonZeroU32>,
) -> Result<Option<RefNameBuf>, CommandError> {
writeln!(
ui.status(),
r#"Fetching into new repo in "{}""#,
workspace_command.workspace_root().display()
)?;
let git_settings = workspace_command.settings().git_settings()?;
let mut fetch_tx = workspace_command.start_transaction();
let mut git_fetch = GitFetch::new(fetch_tx.repo_mut(), &git_settings)?;
with_remote_git_callbacks(ui, |cb| {
git_fetch.fetch(remote_name, &[StringPattern::everything()], cb, depth)
})?;
let default_branch =
with_remote_git_callbacks(ui, |cb| git_fetch.get_default_branch(remote_name, cb))?;
let import_stats = git_fetch.import_refs()?;
print_git_import_stats(ui, fetch_tx.repo(), &import_stats, true)?;
fetch_tx.finish(ui, "fetch from git remote into empty repo")?;
Ok(default_branch)
}