iomanip   [plain text]

// -*- 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

namespace std {

// 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 )
{
    _VSTD::basic_string<_CharT, _Traits> __str;
    __str.push_back(__delim);
    for ( ; __first != __last; ++ __first )
    {
        if (_Traits::eq (*__first, __escape) || _Traits::eq (*__first, __delim))
            __str.push_back(__escape);
        __str.push_back(*__first);
    }
    __str.push_back(__delim);
    return __put_character_sequence(__os, __str.data(), __str.size());
}

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