// 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 std::io::Write;use jj_lib::conflicts::{materialize_tree_value, MaterializedTreeValue};use jj_lib::repo::Repo;use pollster::FutureExt;use tracing::instrument;use crate::cli_util::{CommandHelper, RevisionArg};use crate::command_error::{user_error, CommandError};use crate::ui::Ui;/// Print contents of a file in a revision#[derive(clap::Args, Clone, Debug)]pub(crate) struct CatArgs { /// The revision to get the file contents from #[arg(long, short, default_value = "@")] revision: RevisionArg, /// The file to print #[arg(value_hint = clap::ValueHint::FilePath)] path: String,}#[instrument(skip_all)]pub(crate) fn cmd_cat( ui: &mut Ui, command: &CommandHelper, args: &CatArgs,) -> Result<(), CommandError> { let workspace_command = command.workspace_helper(ui)?; let commit = workspace_command.resolve_single_rev(&args.revision)?; let tree = commit.tree()?; let path = workspace_command.parse_file_path(&args.path)?; let repo = workspace_command.repo(); let value = tree.path_value(&path); let materialized = materialize_tree_value(repo.store(), &path, value).block_on()?; match materialized { MaterializedTreeValue::Absent => { return Err(user_error("No such path")); } MaterializedTreeValue::File { mut reader, .. } => { ui.request_pager(); std::io::copy(&mut reader, &mut ui.stdout_formatter().as_mut())?; } MaterializedTreeValue::Conflict { contents, .. } => { ui.request_pager(); ui.stdout_formatter().write_all(&contents)?; } MaterializedTreeValue::Symlink { .. } | MaterializedTreeValue::Tree(_) | MaterializedTreeValue::GitSubmodule(_) => { return Err(user_error("Path exists but is not a file")); } } Ok(())}
// 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 std::io::Write;
use jj_lib::conflicts::{materialize_tree_value, MaterializedTreeValue};
use jj_lib::repo::Repo;
use pollster::FutureExt;
use tracing::instrument;
use crate::cli_util::{CommandHelper, RevisionArg};
use crate::command_error::{user_error, CommandError};
use crate::ui::Ui;
/// Print contents of a file in a revision
#[derive(clap::Args, Clone, Debug)]
pub(crate) struct CatArgs {
/// The revision to get the file contents from
#[arg(long, short, default_value = "@")]
revision: RevisionArg,
/// The file to print
#[arg(value_hint = clap::ValueHint::FilePath)]
path: String,
}
#[instrument(skip_all)]
pub(crate) fn cmd_cat(
ui: &mut Ui,
command: &CommandHelper,
args: &CatArgs,
) -> Result<(), CommandError> {
let workspace_command = command.workspace_helper(ui)?;
let commit = workspace_command.resolve_single_rev(&args.revision)?;
let tree = commit.tree()?;
let path = workspace_command.parse_file_path(&args.path)?;
let repo = workspace_command.repo();
let value = tree.path_value(&path);
let materialized = materialize_tree_value(repo.store(), &path, value).block_on()?;
match materialized {
MaterializedTreeValue::Absent => {
return Err(user_error("No such path"));
}
MaterializedTreeValue::File { mut reader, .. } => {
ui.request_pager();
std::io::copy(&mut reader, &mut ui.stdout_formatter().as_mut())?;
}
MaterializedTreeValue::Conflict { contents, .. } => {
ui.request_pager();
ui.stdout_formatter().write_all(&contents)?;
}
MaterializedTreeValue::Symlink { .. }
| MaterializedTreeValue::Tree(_)
| MaterializedTreeValue::GitSubmodule(_) => {
return Err(user_error("Path exists but is not a file"));
}
}
Ok(())
}