// This source code is released into the public domain.
module;

#include <string>
#include <expected>
#include <format>

export module nihil.posix:execvp;

import nihil.error;
import :argv;
import :execv;
import :find_in_path;

namespace nihil {

// execvp: equivalent to execv, except the command is passed as
// a filename instead of a file descriptor.  If the filename is not
// an absolute path, it will be searched for in $PATH.
export [[nodiscard]] auto
execvp(std::string_view file, argv &&argv) -> std::expected<execv, error>
{
	auto filename = nihil::find_in_path(file);
	if (!filename)
		return std::unexpected(nihil::error(
			std::format("executable not found in path: {}", file)));
	return execv(std::move(*filename), std::move(argv));
}

} // namespace nihil