forked from mirrors/jj
61 lines
2 KiB
Rust
61 lines
2 KiB
Rust
// Copyright 2022 Google LLC
|
|
//
|
|
// 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::path::PathBuf;
|
|
use std::process::exit;
|
|
|
|
use clap::Parser;
|
|
use itertools::Itertools;
|
|
|
|
/// A fake diff-editor, useful for testing
|
|
#[derive(Parser, Debug)]
|
|
#[clap()]
|
|
struct Args {
|
|
/// Path to the "before" directory
|
|
before: PathBuf,
|
|
|
|
/// Path to the "after" directory
|
|
after: PathBuf,
|
|
}
|
|
|
|
fn main() {
|
|
let args: Args = Args::parse();
|
|
let edit_script_path = PathBuf::from(std::env::var_os("EDIT_SCRIPT").unwrap());
|
|
let edit_script = String::from_utf8(std::fs::read(&edit_script_path).unwrap()).unwrap();
|
|
for instruction in edit_script.split('\0') {
|
|
let (command, payload) = instruction.split_once('\n').unwrap_or((instruction, ""));
|
|
let parts = command.split(' ').collect_vec();
|
|
match parts.as_slice() {
|
|
[""] => {}
|
|
["fail"] => exit(1),
|
|
["rm", file] => {
|
|
std::fs::remove_file(args.after.join(file)).unwrap();
|
|
}
|
|
["reset", file] => {
|
|
if args.before.join(file).exists() {
|
|
std::fs::copy(&args.before.join(file), &args.after.join(file)).unwrap();
|
|
} else {
|
|
std::fs::remove_file(args.after.join(file)).unwrap();
|
|
}
|
|
}
|
|
["write", file] => {
|
|
std::fs::write(args.after.join(file), payload).unwrap();
|
|
}
|
|
_ => {
|
|
eprintln!("unexpected command: {}", command);
|
|
exit(1)
|
|
}
|
|
}
|
|
}
|
|
}
|