Adding upstream version 0.5.5.

Signed-off-by: Daniel Baumann <daniel@debian.org>

examples/custom-prompt-clone.rs

@@ -0,0 +1,139 @@
+use std::path::{Path, PathBuf};
+
+#[derive(Copy, Clone)]
+struct YadPrompter;
+
+impl auth_git2::Prompter for YadPrompter {
+	fn prompt_username_password(&mut self, url: &str, _git_config: &git2::Config) -> Option<(String, String)> {
+		let mut items = yad_prompt(
+			"Git authentication",
+			&format!("Authentication required for {url}"),
+			&["Username", "Password:H"],
+		).ok()?.into_iter();
+		let username = items.next()?;
+		let password = items.next()?;
+		Some((username, password))
+	}
+
+	fn prompt_password(&mut self, username: &str, url: &str, _git_config: &git2::Config) -> Option<String> {
+		let mut items = yad_prompt(
+			"Git authentication",
+			&format!("Authentication required for {url}"),
+			&[&format!("Username: {username}:LBL"), "Password:H"],
+		).ok()?.into_iter();
+		let password = items.next()?;
+		Some(password)
+	}
+
+	fn prompt_ssh_key_passphrase(&mut self, private_key_path: &std::path::Path, _git_config: &git2::Config) -> Option<String> {
+		let mut items = yad_prompt(
+			"Git authentication",
+			&format!("Passphrase required for {}", private_key_path.display()),
+			&["Passphrase:H"],
+		).ok()?.into_iter();
+		let passphrase = items.next()?;
+		Some(passphrase)
+	}
+}
+
+fn yad_prompt(title: &str, text: &str, fields: &[&str]) -> Result<Vec<String>, ()> {
+	let mut command = std::process::Command::new("yad");
+	command
+		.arg("--title")
+		.arg(title)
+		.arg("--text")
+		.arg(text)
+		.arg("--form")
+		.arg("--separator=\n");
+	for field in fields {
+		command.arg("--field");
+		command.arg(field);
+	}
+
+	let output = command
+		.stderr(std::process::Stdio::inherit())
+		.output()
+		.map_err(|e| log::error!("Failed to run `yad`: {e}"))?;
+
+	if !output.status.success() {
+		log::debug!("yad exited with {}", output.status);
+		return Err(());
+	}
+
+	let output = String::from_utf8(output.stdout)
+		.map_err(|_| log::warn!("Invalid UTF-8 in response from yad"))?;
+
+	let mut items: Vec<_> = output.splitn(fields.len() + 1, '\n')
+		.take(fields.len())
+		.map(|x| x.to_owned())
+		.collect();
+	if let Some(last) = items.pop() {
+		if !last.is_empty() {
+			items.push(last)
+		}
+	}
+
+	if items.len() != fields.len() {
+		log::error!("asked yad for {} values but got only {}", fields.len(), items.len());
+		Err(())
+	} else {
+		Ok(items)
+	}
+}
+
+#[derive(clap::Parser)]
+struct Options {
+	/// Show more verbose statement.
+	#[clap(long, short)]
+	#[clap(global = true)]
+	#[clap(action = clap::ArgAction::Count)]
+	verbose: u8,
+
+	/// The URL of the repository to clone.
+	#[clap(value_name = "URL")]
+	repo: String,
+
+	/// The path where to clone the repository.
+	#[clap(value_name = "PATH")]
+	local_path: Option<PathBuf>,
+}
+
+fn main() {
+	if let Err(()) = do_main(clap::Parser::parse()) {
+		std::process::exit(1);
+	}
+}
+
+fn log_level(verbose: u8) -> log::LevelFilter {
+	match verbose {
+		0 => log::LevelFilter::Info,
+		1 => log::LevelFilter::Debug,
+		2.. => log::LevelFilter::Trace,
+	}
+}
+
+fn do_main(options: Options) -> Result<(), ()> {
+	let log_level = log_level(options.verbose);
+	env_logger::builder()
+		.parse_default_env()
+		.filter_module(module_path!(), log_level)
+		.filter_module("auth_git2", log_level)
+		.init();
+
+	let local_path = options.local_path.as_deref()
+		.unwrap_or_else(|| Path::new(repo_name_from_url(&options.repo)));
+
+	log::info!("Cloning {} into {}", options.repo, local_path.display());
+
+	let auth = auth_git2::GitAuthenticator::default()
+		.set_prompter(YadPrompter);
+	auth.clone_repo(&options.repo, local_path)
+		.map_err(|e| log::error!("Failed to clone {}: {}", options.repo, e))?;
+	Ok(())
+}
+
+fn repo_name_from_url(url: &str) -> &str {
+	url.rsplit_once('/')
+		.map(|(_head, tail)| tail)
+		.unwrap_or(url)
+}