forked from mirrors/jj
50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
// Copyright 2022 Google LLC
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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::path::PathBuf;
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use std::process::exit;
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use clap::Parser;
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use itertools::Itertools;
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/// A fake editor, useful for testing
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// It's overkill to use clap for a single argument, but we already use it in many other places...
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#[derive(Parser, Debug)]
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#[clap()]
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struct Args {
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/// Path to the file to edit
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file: PathBuf,
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}
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fn main() {
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let args: Args = Args::parse();
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let edit_script_path = PathBuf::from(std::env::var_os("EDIT_SCRIPT").unwrap());
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let edit_script = String::from_utf8(std::fs::read(&edit_script_path).unwrap()).unwrap();
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for instruction in edit_script.split('\0') {
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let (command, payload) = instruction.split_once('\n').unwrap_or((instruction, ""));
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let parts = command.split(' ').collect_vec();
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match parts.as_slice() {
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[""] => {}
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["fail"] => exit(1),
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["write"] => {
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std::fs::write(&args.file, payload).unwrap();
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}
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_ => {
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eprintln!("unexpected command: {}", command);
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exit(1)
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}
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}
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}
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}
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