// Copyright 2020 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 jj_lib::object_id::ObjectId;use jj_lib::repo::Repo;use jj_lib::rewrite::merge_commit_trees;use tracing::instrument; use crate::cli_util::CommandHelper;use crate::command_error::{user_error, CommandError};use crate::description_util::{    description_template_for_commit, edit_description, join_message_paragraphs,};use crate::ui::Ui; /// Update the description and create a new change on top.#[derive(clap::Args, Clone, Debug)]#[command(visible_aliases=&["ci"])]pub(crate) struct CommitArgs {    /// Interactively choose which changes to include in the first commit    #[arg(short, long)]    interactive: bool,    /// Specify diff editor to be used (implies --interactive)    #[arg(long, value_name = "NAME")]    pub tool: Option<String>,    /// The change description to use (don't open editor)    #[arg(long = "message", short, value_name = "MESSAGE")]    message_paragraphs: Vec<String>,    /// Put these paths in the first commit    #[arg(value_hint = clap::ValueHint::AnyPath)]    paths: Vec<String>,} #[instrument(skip_all)]pub(crate) fn cmd_commit(    ui: &mut Ui,    command: &CommandHelper,    args: &CommitArgs,) -> Result<(), CommandError> {    let mut workspace_command = command.workspace_helper(ui)?;     let commit_id = workspace_command        .get_wc_commit_id()        .ok_or_else(|| user_error("This command requires a working copy"))?;    let commit = workspace_command.repo().store().get_commit(commit_id)?;    let matcher = workspace_command.matcher_from_values(&args.paths)?;    let diff_selector =        workspace_command.diff_selector(ui, args.tool.as_deref(), args.interactive)?;    let mut tx = workspace_command.start_transaction();    let base_tree = merge_commit_trees(tx.repo(), &commit.parents())?;    let instructions = format!(        "\You are splitting the working-copy commit: {} The diff initially shows all changes. Adjust the right side until it shows thecontents you want for the first commit. The remainder will be included in thenew working-copy commit.",        tx.format_commit_summary(&commit)    );    let tree_id = diff_selector.select(        &base_tree,        &commit.tree()?,        matcher.as_ref(),        Some(&instructions),    )?;    let middle_tree = tx.repo().store().get_root_tree(&tree_id)?;    if !args.paths.is_empty() && middle_tree.id() == base_tree.id() {        writeln!(            ui.warning(),            "The given paths do not match any file: {}",            args.paths.join(" ")        )?;    }     let template = description_template_for_commit(        ui,        command.settings(),        tx.base_workspace_helper(),        "",        commit.description(),        &base_tree,        &middle_tree,    )?;     let description = if !args.message_paragraphs.is_empty() {        join_message_paragraphs(&args.message_paragraphs)    } else {        edit_description(tx.base_repo(), &template, command.settings())?    };     let new_commit = tx        .mut_repo()        .rewrite_commit(command.settings(), &commit)        .set_tree_id(tree_id)        .set_description(description)        .write()?;    let workspace_ids = tx        .mut_repo()        .view()        .workspaces_for_wc_commit_id(commit.id());    if !workspace_ids.is_empty() {        let new_wc_commit = tx            .mut_repo()            .new_commit(                command.settings(),                vec![new_commit.id().clone()],                commit.tree_id().clone(),            )            .write()?;        for workspace_id in workspace_ids {            tx.mut_repo().edit(workspace_id, &new_wc_commit).unwrap();        }    }    tx.finish(ui, format!("commit {}", commit.id().hex()))?;    Ok(())}