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80 lines
2.8 KiB
Rust
80 lines
2.8 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 jj_lib::rewrite::merge_commit_trees;
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use tracing::instrument;
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use crate::cli_util::{CommandError, CommandHelper, RevisionArg};
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use crate::diff_util::{diff_formats_for, show_diff, DiffFormatArgs};
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use crate::ui::Ui;
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/// Compare file contents between two commits
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#[derive(clap::Args, Clone, Debug)]
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pub(crate) struct DiffArgs {
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/// Show changes in this revision, compared to its parent(s)
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///
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/// If the revision is a merge commit, this shows changes *from* the
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/// automatic merge of the contents of all of its parents *to* the contents
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/// of the revision itself.
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#[arg(long, short)]
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revision: Option<RevisionArg>,
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/// Show changes from this revision
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#[arg(long, conflicts_with = "revision")]
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from: Option<RevisionArg>,
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/// Show changes to this revision
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#[arg(long, conflicts_with = "revision")]
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to: Option<RevisionArg>,
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/// Restrict the diff to these paths
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#[arg(value_hint = clap::ValueHint::AnyPath)]
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paths: Vec<String>,
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#[command(flatten)]
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format: DiffFormatArgs,
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}
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#[instrument(skip_all)]
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pub(crate) fn cmd_diff(
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ui: &mut Ui,
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command: &CommandHelper,
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args: &DiffArgs,
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) -> Result<(), CommandError> {
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let workspace_command = command.workspace_helper(ui)?;
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let from_tree;
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let to_tree;
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if args.from.is_some() || args.to.is_some() {
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let from = workspace_command.resolve_single_rev(args.from.as_deref().unwrap_or("@"), ui)?;
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from_tree = from.tree()?;
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let to = workspace_command.resolve_single_rev(args.to.as_deref().unwrap_or("@"), ui)?;
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to_tree = to.tree()?;
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} else {
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let commit =
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workspace_command.resolve_single_rev(args.revision.as_deref().unwrap_or("@"), ui)?;
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let parents = commit.parents();
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from_tree = merge_commit_trees(workspace_command.repo().as_ref(), &parents)?;
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to_tree = commit.tree()?
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}
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let matcher = workspace_command.matcher_from_values(&args.paths)?;
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let diff_formats = diff_formats_for(command.settings(), &args.format)?;
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ui.request_pager();
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show_diff(
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ui,
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ui.stdout_formatter().as_mut(),
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&workspace_command,
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&from_tree,
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&to_tree,
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matcher.as_ref(),
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&diff_formats,
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)?;
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Ok(())
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}
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