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cxx/include/iomanip
Marshall Clow 62f34be0ba N3545: Quoted strings 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@190032 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-05 04:48:45 +00:00

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// -*- C++ -*-
//===--------------------------- iomanip ----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_IOMANIP
#define _LIBCPP_IOMANIP
/*
iomanip synopsis
// types T1, T2, ... are unspecified implementation types
T1 resetiosflags(ios_base::fmtflags mask);
T2 setiosflags (ios_base::fmtflags mask);
T3 setbase(int base);
template<charT> T4 setfill(charT c);
T5 setprecision(int n);
T6 setw(int n);
template <class moneyT> T7 get_money(moneyT& mon, bool intl = false);
template <class charT, class moneyT> T8 put_money(const moneyT& mon, bool intl = false);
template <class charT> T9 get_time(struct tm* tmb, const charT* fmt);
template <class charT> T10 put_time(const struct tm* tmb, const charT* fmt);
template <class charT>
T11 quoted(const charT* s, charT delim=charT('"'), charT escape=charT('\\')); // C++14
template <class charT, class traits, class Allocator>
T12 quoted(const basic_string<charT, traits, Allocator>& s,
charT delim=charT('"'), charT escape=charT('\\')); // C++14
template <class charT, class traits, class Allocator>
T13 quoted(basic_string<charT, traits, Allocator>& s,
charT delim=charT('"'), charT escape=charT('\\')); // C++14
} // std
*/
#include <__config>
#include <istream>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
// resetiosflags
class __iom_t1
{
ios_base::fmtflags __mask_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t1(ios_base::fmtflags __m) : __mask_(__m) {}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t1& __x)
{
__is.unsetf(__x.__mask_);
return __is;
}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t1& __x)
{
__os.unsetf(__x.__mask_);
return __os;
}
};
inline _LIBCPP_INLINE_VISIBILITY
__iom_t1
resetiosflags(ios_base::fmtflags __mask)
{
return __iom_t1(__mask);
}
// setiosflags
class __iom_t2
{
ios_base::fmtflags __mask_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t2(ios_base::fmtflags __m) : __mask_(__m) {}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t2& __x)
{
__is.setf(__x.__mask_);
return __is;
}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t2& __x)
{
__os.setf(__x.__mask_);
return __os;
}
};
inline _LIBCPP_INLINE_VISIBILITY
__iom_t2
setiosflags(ios_base::fmtflags __mask)
{
return __iom_t2(__mask);
}
// setbase
class __iom_t3
{
int __base_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t3(int __b) : __base_(__b) {}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t3& __x)
{
__is.setf(__x.__base_ == 8 ? ios_base::oct :
__x.__base_ == 10 ? ios_base::dec :
__x.__base_ == 16 ? ios_base::hex :
ios_base::fmtflags(0), ios_base::basefield);
return __is;
}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t3& __x)
{
__os.setf(__x.__base_ == 8 ? ios_base::oct :
__x.__base_ == 10 ? ios_base::dec :
__x.__base_ == 16 ? ios_base::hex :
ios_base::fmtflags(0), ios_base::basefield);
return __os;
}
};
inline _LIBCPP_INLINE_VISIBILITY
__iom_t3
setbase(int __base)
{
return __iom_t3(__base);
}
// setfill
template<class _CharT>
class __iom_t4
{
_CharT __fill_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t4(_CharT __c) : __fill_(__c) {}
template <class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t4& __x)
{
__os.fill(__x.__fill_);
return __os;
}
};
template<class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
__iom_t4<_CharT>
setfill(_CharT __c)
{
return __iom_t4<_CharT>(__c);
}
// setprecision
class __iom_t5
{
int __n_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t5(int __n) : __n_(__n) {}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t5& __x)
{
__is.precision(__x.__n_);
return __is;
}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t5& __x)
{
__os.precision(__x.__n_);
return __os;
}
};
inline _LIBCPP_INLINE_VISIBILITY
__iom_t5
setprecision(int __n)
{
return __iom_t5(__n);
}
// setw
class __iom_t6
{
int __n_;
public:
_LIBCPP_INLINE_VISIBILITY
explicit __iom_t6(int __n) : __n_(__n) {}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t6& __x)
{
__is.width(__x.__n_);
return __is;
}
template <class _CharT, class _Traits>
friend
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t6& __x)
{
__os.width(__x.__n_);
return __os;
}
};
inline _LIBCPP_INLINE_VISIBILITY
__iom_t6
setw(int __n)
{
return __iom_t6(__n);
}
// get_money
template <class _MoneyT> class __iom_t7;
template <class _CharT, class _Traits, class _MoneyT>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t7<_MoneyT>& __x);
template <class _MoneyT>
class __iom_t7
{
_MoneyT& __mon_;
bool __intl_;
public:
_LIBCPP_INLINE_VISIBILITY
__iom_t7(_MoneyT& __mon, bool __intl)
: __mon_(__mon), __intl_(__intl) {}
template <class _CharT, class _Traits, class _Mp>
friend
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t7<_Mp>& __x);
};
template <class _CharT, class _Traits, class _MoneyT>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t7<_MoneyT>& __x)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
typename basic_istream<_CharT, _Traits>::sentry __s(__is);
if (__s)
{
typedef istreambuf_iterator<_CharT, _Traits> _Ip;
typedef money_get<_CharT, _Ip> _Fp;
ios_base::iostate __err = ios_base::goodbit;
const _Fp& __mf = use_facet<_Fp>(__is.getloc());
__mf.get(_Ip(__is), _Ip(), __x.__intl_, __is, __err, __x.__mon_);
__is.setstate(__err);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
__is.__set_badbit_and_consider_rethrow();
}
#endif // _LIBCPP_NO_EXCEPTIONS
return __is;
}
template <class _MoneyT>
inline _LIBCPP_INLINE_VISIBILITY
__iom_t7<_MoneyT>
get_money(_MoneyT& __mon, bool __intl = false)
{
return __iom_t7<_MoneyT>(__mon, __intl);
}
// put_money
template <class _MoneyT> class __iom_t8;
template <class _CharT, class _Traits, class _MoneyT>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t8<_MoneyT>& __x);
template <class _MoneyT>
class __iom_t8
{
const _MoneyT& __mon_;
bool __intl_;
public:
_LIBCPP_INLINE_VISIBILITY
__iom_t8(const _MoneyT& __mon, bool __intl)
: __mon_(__mon), __intl_(__intl) {}
template <class _CharT, class _Traits, class _Mp>
friend
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t8<_Mp>& __x);
};
template <class _CharT, class _Traits, class _MoneyT>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t8<_MoneyT>& __x)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
typename basic_ostream<_CharT, _Traits>::sentry __s(__os);
if (__s)
{
typedef ostreambuf_iterator<_CharT, _Traits> _Op;
typedef money_put<_CharT, _Op> _Fp;
const _Fp& __mf = use_facet<_Fp>(__os.getloc());
if (__mf.put(_Op(__os), __x.__intl_, __os, __os.fill(), __x.__mon_).failed())
__os.setstate(ios_base::badbit);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
__os.__set_badbit_and_consider_rethrow();
}
#endif // _LIBCPP_NO_EXCEPTIONS
return __os;
}
template <class _MoneyT>
inline _LIBCPP_INLINE_VISIBILITY
__iom_t8<_MoneyT>
put_money(const _MoneyT& __mon, bool __intl = false)
{
return __iom_t8<_MoneyT>(__mon, __intl);
}
// get_time
template <class _CharT> class __iom_t9;
template <class _CharT, class _Traits>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t9<_CharT>& __x);
template <class _CharT>
class __iom_t9
{
tm* __tm_;
const _CharT* __fmt_;
public:
_LIBCPP_INLINE_VISIBILITY
__iom_t9(tm* __tm, const _CharT* __fmt)
: __tm_(__tm), __fmt_(__fmt) {}
template <class _Cp, class _Traits>
friend
basic_istream<_Cp, _Traits>&
operator>>(basic_istream<_Cp, _Traits>& __is, const __iom_t9<_Cp>& __x);
};
template <class _CharT, class _Traits>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, const __iom_t9<_CharT>& __x)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
typename basic_istream<_CharT, _Traits>::sentry __s(__is);
if (__s)
{
typedef istreambuf_iterator<_CharT, _Traits> _Ip;
typedef time_get<_CharT, _Ip> _Fp;
ios_base::iostate __err = ios_base::goodbit;
const _Fp& __tf = use_facet<_Fp>(__is.getloc());
__tf.get(_Ip(__is), _Ip(), __is, __err, __x.__tm_,
__x.__fmt_, __x.__fmt_ + _Traits::length(__x.__fmt_));
__is.setstate(__err);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
__is.__set_badbit_and_consider_rethrow();
}
#endif // _LIBCPP_NO_EXCEPTIONS
return __is;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
__iom_t9<_CharT>
get_time(tm* __tm, const _CharT* __fmt)
{
return __iom_t9<_CharT>(__tm, __fmt);
}
// put_time
template <class _CharT> class __iom_t10;
template <class _CharT, class _Traits>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t10<_CharT>& __x);
template <class _CharT>
class __iom_t10
{
const tm* __tm_;
const _CharT* __fmt_;
public:
_LIBCPP_INLINE_VISIBILITY
__iom_t10(const tm* __tm, const _CharT* __fmt)
: __tm_(__tm), __fmt_(__fmt) {}
template <class _Cp, class _Traits>
friend
basic_ostream<_Cp, _Traits>&
operator<<(basic_ostream<_Cp, _Traits>& __os, const __iom_t10<_Cp>& __x);
};
template <class _CharT, class _Traits>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const __iom_t10<_CharT>& __x)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
typename basic_ostream<_CharT, _Traits>::sentry __s(__os);
if (__s)
{
typedef ostreambuf_iterator<_CharT, _Traits> _Op;
typedef time_put<_CharT, _Op> _Fp;
const _Fp& __tf = use_facet<_Fp>(__os.getloc());
if (__tf.put(_Op(__os), __os, __os.fill(), __x.__tm_,
__x.__fmt_, __x.__fmt_ + _Traits::length(__x.__fmt_)).failed())
__os.setstate(ios_base::badbit);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
__os.__set_badbit_and_consider_rethrow();
}
#endif // _LIBCPP_NO_EXCEPTIONS
return __os;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
__iom_t10<_CharT>
put_time(const tm* __tm, const _CharT* __fmt)
{
return __iom_t10<_CharT>(__tm, __fmt);
}
#if _LIBCPP_STD_VER > 11
template <class _CharT, class _Traits, class _ForwardIterator>
std::basic_ostream<_CharT, _Traits> &
__quoted_output ( basic_ostream<_CharT, _Traits> &__os,
_ForwardIterator __first, _ForwardIterator __last, _CharT __delim, _CharT __escape )
{
__os << __delim;
for ( ; __first != __last; ++ __first )
{
if (_Traits::eq (*__first, __escape) || _Traits::eq (*__first, __delim))
__os << __escape;
__os << *__first;
}
__os << __delim;
return __os;
}
template <class _CharT, class _Traits, class _String>
basic_istream<_CharT, _Traits> &
__quoted_input ( basic_istream<_CharT, _Traits> &__is, _String & __string, _CharT __delim, _CharT __escape )
{
__string.clear ();
_CharT __c;
__is >> __c;
if ( __is.fail ())
return __is;
if (!_Traits::eq (__c, __delim)) // no delimiter, read the whole string
{
__is.unget ();
__is >> __string;
return __is;
}
__save_flags<_CharT, _Traits> sf(__is);
noskipws (__is);
while (true)
{
__is >> __c;
if ( __is.fail ())
break;
if (_Traits::eq (__c, __escape))
{
__is >> __c;
if ( __is.fail ())
break;
}
else if (_Traits::eq (__c, __delim))
break;
__string.push_back ( __c );
}
return __is;
}
template <class _CharT, class _Iter, class _Traits=char_traits<_CharT>>
struct __quoted_output_proxy
{
_Iter __first;
_Iter __last;
_CharT __delim;
_CharT __escape;
__quoted_output_proxy(_Iter __f, _Iter __l, _CharT __d, _CharT __e)
: __first(__f), __last(__l), __delim(__d), __escape(__e) {}
// This would be a nice place for a string_ref
};
template <class _CharT, class _Traits, class _Iter>
basic_ostream<_CharT, _Traits>& operator<<(
basic_ostream<_CharT, _Traits>& __os,
const __quoted_output_proxy<_CharT, _Iter, _Traits> & __proxy)
{
return __quoted_output (__os, __proxy.__first, __proxy.__last, __proxy.__delim, __proxy.__escape);
}
template <class _CharT, class _Traits, class _Allocator>
struct __quoted_proxy
{
basic_string<_CharT, _Traits, _Allocator> &__string;
_CharT __delim;
_CharT __escape;
__quoted_proxy(basic_string<_CharT, _Traits, _Allocator> &__s, _CharT __d, _CharT __e)
: __string(__s), __delim(__d), __escape(__e) {}
};
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_INLINE_VISIBILITY
basic_ostream<_CharT, _Traits>& operator<<(
basic_ostream<_CharT, _Traits>& __os,
const __quoted_proxy<_CharT, _Traits, _Allocator> & __proxy)
{
return __quoted_output (__os, __proxy.string.cbegin (), __proxy.string.cend (), __proxy.__delim, __proxy.__escape);
}
// extractor for non-const basic_string& proxies
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_INLINE_VISIBILITY
basic_istream<_CharT, _Traits>& operator>>(
basic_istream<_CharT, _Traits>& __is,
const __quoted_proxy<_CharT, _Traits, _Allocator> & __proxy)
{
return __quoted_input ( __is, __proxy.__string, __proxy.__delim, __proxy.__escape );
}
template <class _CharT>
_LIBCPP_INLINE_VISIBILITY
__quoted_output_proxy<_CharT, const _CharT *>
quoted ( const _CharT *__s, _CharT __delim = _CharT('"'), _CharT __escape =_CharT('\\'))
{
const _CharT *__end = __s;
while ( *__end ) ++__end;
return __quoted_output_proxy<_CharT, const _CharT *> ( __s, __end, __delim, __escape );
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_INLINE_VISIBILITY
__quoted_output_proxy<_CharT, typename basic_string <_CharT, _Traits, _Allocator>::const_iterator>
quoted ( const basic_string <_CharT, _Traits, _Allocator> &__s, _CharT __delim = _CharT('"'), _CharT __escape=_CharT('\\'))
{
return __quoted_output_proxy<_CharT,
typename basic_string <_CharT, _Traits, _Allocator>::const_iterator>
( __s.cbegin(), __s.cend (), __delim, __escape );
}
template <class _CharT, class _Traits, class _Allocator>
__quoted_proxy<_CharT, _Traits, _Allocator>
quoted ( basic_string <_CharT, _Traits, _Allocator> &__s, _CharT __delim = _CharT('"'), _CharT __escape=_CharT('\\'))
{
return __quoted_proxy<_CharT, _Traits, _Allocator>( __s, __delim, __escape );
}
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_IOMANIP
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