Method source_script

userspace/programs/Shell/Execute.cpp:392–433

}

BAN::ErrorOr<void> Execute::source_script(BAN::StringView path)
{
	BAN::Vector<BAN::String> script_lines;

	{
		FILE* fp = fopen(path.data(), "r");
		if (fp == nullptr)
			return BAN::Error::from_errno(errno);

		BAN::String current;
		char temp_buffer[128];
		while (fgets(temp_buffer, sizeof(temp_buffer), fp))
		{
			TRY(current.append(temp_buffer));
			if (current.back() != '\n')
				continue;
			current.pop_back();

			if (!current.empty())
				TRY(script_lines.push_back(BAN::move(current)));
			current.clear();
		}

		if (!current.empty())
			TRY(script_lines.push_back(BAN::move(current)));

		fclose(fp);
	}

	size_t index = 0;
	TokenParser parser(
		[&](BAN::Optional<BAN::StringView>) -> BAN::Optional<BAN::String>
		{
			if (index >= script_lines.size())
				return {};
			return script_lines[index++];
		}
	);
	if (!parser.main_loop(true))
		return BAN::Error::from_literal("oop");
	return {};
}