本文整理汇总了C++中Arguments::front方法的典型用法代码示例。如果您正苦于以下问题：C++ Arguments::front方法的具体用法？C++ Arguments::front怎么用？C++ Arguments::front使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Arguments的用法示例。
在下文中一共展示了Arguments::front方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: if
//.........这里部分代码省略.........
default:
{
BOOST_ASSERT(false);
break;
}
}
si->hStdOutput = chout.valid() ? chout.get() : INVALID_HANDLE_VALUE;
switch (infoerr.type_)
{
case stream_info::close:
{
break;
}
case stream_info::inherit:
{
cherr = file_handle::win32_std(STD_ERROR_HANDLE, true);
break;
}
case stream_info::redirect:
{
BOOST_ASSERT(infoerr.desc_to_ == 1);
BOOST_ASSERT(chout.valid());
cherr = file_handle::win32_dup(chout.get(), true);
break;
}
case stream_info::use_file:
{
HANDLE h = ::CreateFileA(infoerr.file_.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE)
boost::throw_exception(boost::system::system_error(boost::system::error_code(::GetLastError(), boost::system::get_system_category()), "boost::process::detail::win32_start: CreateFile failed"));
cherr = file_handle(h);
break;
}
case stream_info::use_handle:
{
cherr = infoerr.handle_;
cherr.win32_set_inheritable(true);
break;
}
case stream_info::use_pipe:
{
infoerr.pipe_->wend().win32_set_inheritable(true);
cherr = infoerr.pipe_->wend();
break;
}
default:
{
BOOST_ASSERT(false);
break;
}
}
si->hStdError = cherr.valid() ? cherr.get() : INVALID_HANDLE_VALUE;
PROCESS_INFORMATION pi;
::ZeroMemory(&pi, sizeof(pi));
boost::shared_array<char> cmdline;
boost::scoped_array<char> executable;
// exe could be "", in which case call CreateProcess with NULL first argument
if (exe.size()) {
executable.reset(new char[exe.size() + 1]);
#if defined(__CYGWIN__) || defined(_SCL_SECURE_NO_DEPRECATE)
::strcpy(executable.get(), exe.c_str());
#else
::strcpy_s(executable.get(), exe.size() + 1, exe.c_str());
#endif
cmdline = collection_to_win32_cmdline(args);
}
else if (args.size() == 1) {
// No exe and just a single argument. Dont escape anything - pass it through unchanged.
std::string const &c = args.front();
cmdline.reset(new char[c.size() + 1]);
#if defined(__CYGWIN__) || defined(_SCL_SECURE_NO_DEPRECATE)
::strcpy(cmdline.get(), c.c_str());
#else
::strcpy_s(cmdline.get(), c.size() + 1, c.c_str());
#endif
}
else {
cmdline = collection_to_win32_cmdline(args);
}
boost::scoped_array<char> workdir(new char[setup.work_directory.size() + 1]);
#if defined(__CYGWIN__) || defined(_SCL_SECURE_NO_DEPRECATE)
::strcpy(workdir.get(), setup.work_directory.c_str());
#else
::strcpy_s(workdir.get(), setup.work_directory.size() + 1, setup.work_directory.c_str());
#endif
boost::shared_array<char> envstrs = environment_to_win32_strings(env);
if (!::CreateProcessA(executable.get(), cmdline.get(), NULL, NULL, TRUE, 0, envstrs.get(), workdir.get(), si.get(), &pi))
boost::throw_exception(boost::system::system_error(boost::system::error_code(::GetLastError(), boost::system::get_system_category()), "boost::process::detail::win32_start: CreateProcess failed"));
return pi;
}