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e38e2904bb
When the caller needs a formatter, it's because they're doing something non-trivial. When the user passed `--quiet` (see upcoming patch), we should ideally skip doing related work for print the formatting output. It helps if the `Ui` object doesn't even return a `Formatter` then, so the caller is forced to handle the quiet case differently. Thanks to Yuya for the suggestion.
90 lines
3.3 KiB
Rust
90 lines
3.3 KiB
Rust
// Copyright 2020 The Jujutsu Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use std::io::Write;
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use indexmap::IndexMap;
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use jj_lib::backend::CommitId;
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use jj_lib::commit::Commit;
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use jj_lib::repo::Repo;
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use tracing::instrument;
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use crate::cli_util::{short_commit_hash, CommandHelper, RevisionArg};
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use crate::command_error::{user_error, CommandError};
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use crate::ui::Ui;
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/// Create a new change with the same content as an existing one
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#[derive(clap::Args, Clone, Debug)]
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pub(crate) struct DuplicateArgs {
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/// The revision(s) to duplicate
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#[arg(default_value = "@")]
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revisions: Vec<RevisionArg>,
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/// Ignored (but lets you pass `-r` for consistency with other commands)
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#[arg(short = 'r', hide = true, action = clap::ArgAction::Count)]
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unused_revision: u8,
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}
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#[instrument(skip_all)]
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pub(crate) fn cmd_duplicate(
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ui: &mut Ui,
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command: &CommandHelper,
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args: &DuplicateArgs,
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) -> Result<(), CommandError> {
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let mut workspace_command = command.workspace_helper(ui)?;
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let to_duplicate: Vec<CommitId> = workspace_command
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.parse_union_revsets(&args.revisions)?
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.evaluate_to_commit_ids()?
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.collect(); // in reverse topological order
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if to_duplicate.is_empty() {
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writeln!(ui.status(), "No revisions to duplicate.")?;
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return Ok(());
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}
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if to_duplicate.last() == Some(workspace_command.repo().store().root_commit_id()) {
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return Err(user_error("Cannot duplicate the root commit"));
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}
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let mut duplicated_old_to_new: IndexMap<&CommitId, Commit> = IndexMap::new();
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let mut tx = workspace_command.start_transaction();
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let base_repo = tx.base_repo().clone();
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let store = base_repo.store();
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let mut_repo = tx.mut_repo();
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for original_commit_id in to_duplicate.iter().rev() {
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// Topological order ensures that any parents of `original_commit` are
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// either not in `to_duplicate` or were already duplicated.
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let original_commit = store.get_commit(original_commit_id)?;
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let new_parents = original_commit
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.parent_ids()
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.iter()
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.map(|id| duplicated_old_to_new.get(id).map_or(id, |c| c.id()).clone())
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.collect();
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let new_commit = mut_repo
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.rewrite_commit(command.settings(), &original_commit)
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.generate_new_change_id()
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.set_parents(new_parents)
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.write()?;
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duplicated_old_to_new.insert(original_commit_id, new_commit);
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}
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if let Some(mut formatter) = ui.status_formatter() {
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for (old_id, new_commit) in &duplicated_old_to_new {
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write!(formatter, "Duplicated {} as ", short_commit_hash(old_id))?;
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tx.write_commit_summary(formatter.as_mut(), new_commit)?;
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writeln!(formatter)?;
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}
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}
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tx.finish(ui, format!("duplicate {} commit(s)", to_duplicate.len()))?;
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Ok(())
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}
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