mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-07 13:54:33 +00:00
183 lines
4.9 KiB
C++
183 lines
4.9 KiB
C++
// Helpers for quoted stream manipulators -*- C++ -*-
|
|
|
|
// Copyright (C) 2013-2019 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file bits/quoted_string.h
|
|
* This is an internal header file, included by other library headers.
|
|
* Do not attempt to use it directly. @headername{iomanip}
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_QUOTED_STRING_H
|
|
#define _GLIBCXX_QUOTED_STRING_H 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#if __cplusplus < 201103L
|
|
# include <bits/c++0x_warning.h>
|
|
#else
|
|
#include <sstream>
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
namespace __detail {
|
|
/**
|
|
* @brief Struct for delimited strings.
|
|
*/
|
|
template<typename _String, typename _CharT>
|
|
struct _Quoted_string
|
|
{
|
|
static_assert(is_reference<_String>::value
|
|
|| is_pointer<_String>::value,
|
|
"String type must be pointer or reference");
|
|
|
|
_Quoted_string(_String __str, _CharT __del, _CharT __esc)
|
|
: _M_string(__str), _M_delim{__del}, _M_escape{__esc}
|
|
{ }
|
|
|
|
_Quoted_string&
|
|
operator=(_Quoted_string&) = delete;
|
|
|
|
_String _M_string;
|
|
_CharT _M_delim;
|
|
_CharT _M_escape;
|
|
};
|
|
|
|
#if __cplusplus >= 201703L
|
|
template<typename _CharT, typename _Traits>
|
|
struct _Quoted_string<basic_string_view<_CharT, _Traits>, _CharT>
|
|
{
|
|
_Quoted_string(basic_string_view<_CharT, _Traits> __str,
|
|
_CharT __del, _CharT __esc)
|
|
: _M_string(__str), _M_delim{__del}, _M_escape{__esc}
|
|
{ }
|
|
|
|
_Quoted_string&
|
|
operator=(_Quoted_string&) = delete;
|
|
|
|
basic_string_view<_CharT, _Traits> _M_string;
|
|
_CharT _M_delim;
|
|
_CharT _M_escape;
|
|
};
|
|
#endif // C++17
|
|
|
|
/**
|
|
* @brief Inserter for quoted strings.
|
|
*
|
|
* _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
* DR 2344 quoted()'s interaction with padding is unclear
|
|
*/
|
|
template<typename _CharT, typename _Traits>
|
|
std::basic_ostream<_CharT, _Traits>&
|
|
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
|
|
const _Quoted_string<const _CharT*, _CharT>& __str)
|
|
{
|
|
std::basic_ostringstream<_CharT, _Traits> __ostr;
|
|
__ostr << __str._M_delim;
|
|
for (const _CharT* __c = __str._M_string; *__c; ++__c)
|
|
{
|
|
if (*__c == __str._M_delim || *__c == __str._M_escape)
|
|
__ostr << __str._M_escape;
|
|
__ostr << *__c;
|
|
}
|
|
__ostr << __str._M_delim;
|
|
|
|
return __os << __ostr.str();
|
|
}
|
|
|
|
/**
|
|
* @brief Inserter for quoted strings.
|
|
*
|
|
* _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
* DR 2344 quoted()'s interaction with padding is unclear
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _String>
|
|
std::basic_ostream<_CharT, _Traits>&
|
|
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
|
|
const _Quoted_string<_String, _CharT>& __str)
|
|
{
|
|
std::basic_ostringstream<_CharT, _Traits> __ostr;
|
|
__ostr << __str._M_delim;
|
|
for (auto __c : __str._M_string)
|
|
{
|
|
if (__c == __str._M_delim || __c == __str._M_escape)
|
|
__ostr << __str._M_escape;
|
|
__ostr << __c;
|
|
}
|
|
__ostr << __str._M_delim;
|
|
|
|
return __os << __ostr.str();
|
|
}
|
|
|
|
/**
|
|
* @brief Extractor for delimited strings.
|
|
* The left and right delimiters can be different.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
std::basic_istream<_CharT, _Traits>&
|
|
operator>>(std::basic_istream<_CharT, _Traits>& __is,
|
|
const _Quoted_string<basic_string<_CharT, _Traits, _Alloc>&,
|
|
_CharT>& __str)
|
|
{
|
|
_CharT __c;
|
|
__is >> __c;
|
|
if (!__is.good())
|
|
return __is;
|
|
if (__c != __str._M_delim)
|
|
{
|
|
__is.unget();
|
|
__is >> __str._M_string;
|
|
return __is;
|
|
}
|
|
__str._M_string.clear();
|
|
std::ios_base::fmtflags __flags
|
|
= __is.flags(__is.flags() & ~std::ios_base::skipws);
|
|
do
|
|
{
|
|
__is >> __c;
|
|
if (!__is.good())
|
|
break;
|
|
if (__c == __str._M_escape)
|
|
{
|
|
__is >> __c;
|
|
if (!__is.good())
|
|
break;
|
|
}
|
|
else if (__c == __str._M_delim)
|
|
break;
|
|
__str._M_string += __c;
|
|
}
|
|
while (true);
|
|
__is.setf(__flags);
|
|
|
|
return __is;
|
|
}
|
|
} // namespace __detail
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif // C++11
|
|
#endif /* _GLIBCXX_QUOTED_STRING_H */
|