__s2.data(), __s2.data() + __s2.length()) < 0);
}
+ /**
+ * @brief Test for the presence of a facet.
+ *
+ * has_facet tests the locale argument for the presence of the facet type
+ * provided as the template parameter. Facets derived from the facet
+ * parameter will also return true.
+ *
+ * @param Facet The facet type to test the presence of.
+ * @param locale The locale to test.
+ * @return true if locale contains a facet of type Facet, else false.
+ * @throw std::bad_cast if locale doesn't contain the facet.
+ */
template<typename _Facet>
inline bool
has_facet(const locale& __loc) throw()
return (__i < __loc._M_impl->_M_facets_size && __facets[__i]);
}
+ /**
+ * @brief Return a facet.
+ *
+ * use_facet looks for and returns a reference to a facet of type Facet
+ * where Facet is the template parameter. If has_facet(locale) is true,
+ * there is a suitable facet to return. It throws std::bad_cast if the
+ * locale doesn't contain a facet of type Facet.
+ *
+ * @param Facet The facet type to access.
+ * @param locale The locale to use.
+ * @return Reference to facet of type Facet.
+ * @throw std::bad_cast if locale doesn't contain a facet of type Facet.
+ */
template<typename _Facet>
inline const _Facet&
use_facet(const locale& __loc)
const __cache_type* __lc = __uc(__loc);
const _CharT* __lit = __lc->_M_atoms_in;
+ // True if a mantissa is found.
+ bool __found_mantissa = false;
+
// First check for sign.
if (__beg != __end)
{
const char_type __c = *__beg;
const bool __plus = __traits_type::eq(__c, __lit[_S_iplus]);
- if (__plus || __traits_type::eq(__c, __lit[_S_iminus]))
+ if ((__plus || __traits_type::eq(__c, __lit[_S_iminus]))
+ && !__traits_type::eq(__c, __lc->_M_decimal_point)
+ && (!__lc->_M_use_grouping
+ || !__traits_type::eq(__c, __lc->_M_thousands_sep)))
{
__xtrc += __plus ? _S_atoms_in[_S_iplus]
: _S_atoms_in[_S_iminus];
}
}
- // Next, look for a zero...
- bool __found_mantissa = false;
- if (__beg != __end && __traits_type::eq(*__beg, __lit[_S_izero]))
+ // Next, look for leading zeros.
+ while (__beg != __end)
{
- __xtrc += _S_atoms_in[_S_izero];
- __found_mantissa = true;
- ++__beg;
- // ... and skip the additional ones.
- for (; __beg != __end
- && __traits_type::eq(*__beg, __lit[_S_izero]); ++__beg);
+ const char_type __c = *__beg;
+ if (__traits_type::eq(__c, __lc->_M_decimal_point)
+ || (__lc->_M_use_grouping
+ && __traits_type::eq(__c, __lc->_M_thousands_sep)))
+ break;
+ else if (__traits_type::eq(__c, __lit[_S_izero]))
+ {
+ if (!__found_mantissa)
+ {
+ __xtrc += _S_atoms_in[_S_izero];
+ __found_mantissa = true;
+ }
+ ++__beg;
+ }
+ else
+ break;
}
// Only need acceptable digits for floating point numbers.
string __found_grouping;
int __sep_pos = 0;
bool __e;
+ const char_type* __p;
while (__beg != __end)
{
- // Only look in digits.
+ // According to 22.2.2.1.2, p8-9, first look for thousands_sep
+ // and decimal_point.
const char_type __c = *__beg;
- const char_type* __p = __traits_type::find(__lit + _S_izero, 10,
- __c);
- if (__p)
- {
- // Try first for acceptable digit; record it if found.
- __xtrc += _S_atoms_in[__p - __lit];
- __found_mantissa = true;
- ++__sep_pos;
- ++__beg;
- }
- else if (__traits_type::eq(__c, __lc->_M_thousands_sep)
- && __lc->_M_use_grouping && !__found_dec)
+ if (__lc->_M_use_grouping
+ && __traits_type::eq(__c, __lc->_M_thousands_sep))
{
- // NB: Thousands separator at the beginning of a string
- // is a no-no, as is two consecutive thousands separators.
- if (__sep_pos)
- {
- __found_grouping += static_cast<char>(__sep_pos);
- __sep_pos = 0;
- ++__beg;
- }
- else
+ if (!__found_dec && !__found_sci)
{
- __err |= ios_base::failbit;
- break;
+ // NB: Thousands separator at the beginning of a string
+ // is a no-no, as is two consecutive thousands separators.
+ if (__sep_pos)
+ {
+ __found_grouping += static_cast<char>(__sep_pos);
+ __sep_pos = 0;
+ ++__beg;
+ }
+ else
+ {
+ __err |= ios_base::failbit;
+ break;
+ }
}
+ else
+ break;
}
- else if (__traits_type::eq(__c, __lc->_M_decimal_point)
- && !__found_dec)
+ else if (__traits_type::eq(__c, __lc->_M_decimal_point))
+ {
+ if (!__found_dec && !__found_sci)
+ {
+ // If no grouping chars are seen, no grouping check
+ // is applied. Therefore __found_grouping is adjusted
+ // only if decimal_point comes after some thousands_sep.
+ if (__found_grouping.size())
+ __found_grouping += static_cast<char>(__sep_pos);
+ __xtrc += '.';
+ __found_dec = true;
+ ++__beg;
+ }
+ else
+ break;
+ }
+ else if (__p = __traits_type::find(__lit + _S_izero, 10, __c))
{
- // According to the standard, if no grouping chars are seen,
- // no grouping check is applied. Therefore __found_grouping
- // must be adjusted only if __dec comes after some __sep.
- if (__found_grouping.size())
- __found_grouping += static_cast<char>(__sep_pos);
- __xtrc += '.';
- __found_dec = true;
+ __xtrc += _S_atoms_in[__p - __lit];
+ __found_mantissa = true;
+ ++__sep_pos;
++__beg;
}
else if ((__e = __traits_type::eq(__c, __lit[_S_ie])
}
template<typename _CharT, typename _InIter>
- _InIter
- num_get<_CharT, _InIter>::
- _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
- ios_base::iostate& __err, string& __xtrc, int& __base) const
- {
- typedef char_traits<_CharT> __traits_type;
- typedef typename numpunct<_CharT>::__cache_type __cache_type;
- __use_cache<__cache_type> __uc;
- const locale& __loc = __io._M_getloc();
- const __cache_type* __lc = __uc(__loc);
- const _CharT* __lit = __lc->_M_atoms_in;
-
- // NB: Iff __basefield == 0, this can change based on contents.
- const ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
- if (__basefield == ios_base::oct)
- __base = 8;
- else if (__basefield == ios_base::hex)
- __base = 16;
- else
- __base = 10;
-
- // First check for sign.
- if (__beg != __end)
- {
- const char_type __c = *__beg;
- const bool __plus = __traits_type::eq(__c, __lit[_S_iplus]);
- if (__plus || __traits_type::eq(__c, __lit[_S_iminus]))
- {
- __xtrc += __plus ? _S_atoms_in[_S_iplus]
- : _S_atoms_in[_S_iminus];
+ template<typename _ValueT>
+ _InIter
+ num_get<_CharT, _InIter>::
+ _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
+ ios_base::iostate& __err, _ValueT& __v) const
+ {
+ typedef char_traits<_CharT> __traits_type;
+ typedef typename numpunct<_CharT>::__cache_type __cache_type;
+ __use_cache<__cache_type> __uc;
+ const locale& __loc = __io._M_getloc();
+ const __cache_type* __lc = __uc(__loc);
+ const _CharT* __lit = __lc->_M_atoms_in;
+
+ // NB: Iff __basefield == 0, __base can change based on contents.
+ const ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
+ const bool __oct = __basefield == ios_base::oct;
+ int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);
+
+ // True if numeric digits are found.
+ bool __found_num = false;
+
+ // First check for sign.
+ bool __negative = false;
+ if (__beg != __end)
+ {
+ const char_type __c = *__beg;
+ if (numeric_limits<_ValueT>::is_signed)
+ __negative = __traits_type::eq(__c, __lit[_S_iminus]);
+ if ((__negative || __traits_type::eq(__c, __lit[_S_iplus]))
+ && !__traits_type::eq(__c, __lc->_M_decimal_point)
+ && (!__lc->_M_use_grouping
+ || !__traits_type::eq(__c, __lc->_M_thousands_sep)))
++__beg;
- }
- }
+ }
- // Next, look for leading zeros and check required digits for base formats.
- if (__builtin_expect(__base == 10, true))
- {
- // Look for a zero...
- if (__beg != __end && __traits_type::eq(*__beg, __lit[_S_izero]))
- {
- __xtrc += _S_atoms_in[_S_izero];
- ++__beg;
- // ... and skip the additional ones.
- for (; __beg != __end
- && __traits_type::eq(*__beg, __lit[_S_izero]); ++__beg);
-
- // Check required digits.
- if (__beg != __end && __basefield == 0)
- {
- const bool __x = __traits_type::eq(*__beg, __lit[_S_ix]);
- if (__x || __traits_type::eq(*__beg, __lit[_S_iX]))
- {
- __xtrc += __x ? _S_atoms_in[_S_ix]
- : _S_atoms_in[_S_iX];
+ // Next, look for leading zeros and check required digits
+ // for base formats.
+ while (__beg != __end)
+ {
+ const char_type __c = *__beg;
+ if (__traits_type::eq(__c, __lc->_M_decimal_point)
+ || (__lc->_M_use_grouping
+ && __traits_type::eq(__c, __lc->_M_thousands_sep)))
+ break;
+ else if (__traits_type::eq(__c, __lit[_S_izero])
+ && (!__found_num || __base == 10))
+ {
+ __found_num = true;
+ ++__beg;
+ }
+ else if (__found_num)
+ {
+ if (__traits_type::eq(__c, __lit[_S_ix])
+ || __traits_type::eq(__c, __lit[_S_iX]))
+ {
+ if (__basefield == 0)
__base = 16;
- ++__beg;
- }
- else
- __base = 8;
- }
- }
- }
- else if (__base == 16)
- {
- if (__beg != __end && __traits_type::eq(*__beg, __lit[_S_izero]))
- {
- __xtrc += _S_atoms_in[_S_izero];
-
- if (++__beg != __end)
- {
- const bool __x = __traits_type::eq(*__beg, __lit[_S_ix]);
- if (__x || __traits_type::eq(*__beg, __lit[_S_iX]))
- {
- __xtrc += __x ? _S_atoms_in[_S_ix]
- : _S_atoms_in[_S_iX];
- ++__beg;
- }
- }
- }
- }
-
- // At this point, base is determined. If not hex, only allow
- // base digits as valid input.
- const size_t __len = __base == 16 ? _S_iend : __base;
+ if (__base == 16)
+ {
+ __found_num = false;
+ ++__beg;
+ }
+ }
+ else if (__basefield == 0)
+ __base = 8;
+ break;
+ }
+ else
+ break;
+ }
- // Extract.
- string __found_grouping;
- int __sep_pos = 0;
- for (; __beg != __end; ++__beg)
- {
- const char_type __c = *__beg;
- const char_type* __p = __traits_type::find(__lit + _S_izero,
- __len, __c);
- if (__p)
- {
- // Try first for acceptable digit; record it if found.
- __xtrc += _S_atoms_in[__p - __lit];
- ++__sep_pos;
- }
- else if (__traits_type::eq(__c, __lc->_M_thousands_sep)
- && __lc->_M_use_grouping)
- {
- // NB: Thousands separator at the beginning of a string
- // is a no-no, as is two consecutive thousands separators.
- if (__sep_pos)
- {
- __found_grouping += static_cast<char>(__sep_pos);
- __sep_pos = 0;
- }
- else
- {
- __err |= ios_base::failbit;
+ // At this point, base is determined. If not hex, only allow
+ // base digits as valid input.
+ const size_t __len = __base == 16 ? _S_iend : __base;
+
+ // Extract.
+ string __found_grouping;
+ int __sep_pos = 0;
+ bool __overflow = false;
+ _ValueT __result = 0;
+ const char_type* __lit_zero = __lit + _S_izero;
+ const char_type* __p;
+ if (__negative)
+ {
+ const _ValueT __min = numeric_limits<_ValueT>::min() / __base;
+ for (; __beg != __end; ++__beg)
+ {
+ // According to 22.2.2.1.2, p8-9, first look for thousands_sep
+ // and decimal_point.
+ const char_type __c = *__beg;
+ if (__lc->_M_use_grouping
+ && __traits_type::eq(__c, __lc->_M_thousands_sep))
+ {
+ // NB: Thousands separator at the beginning of a string
+ // is a no-no, as is two consecutive thousands separators.
+ if (__sep_pos)
+ {
+ __found_grouping += static_cast<char>(__sep_pos);
+ __sep_pos = 0;
+ }
+ else
+ {
+ __err |= ios_base::failbit;
+ break;
+ }
+ }
+ else if (__traits_type::eq(__c, __lc->_M_decimal_point))
break;
- }
- }
- else
- // Not a valid input item.
- break;
- }
+ else if (__p = __traits_type::find(__lit_zero, __len, __c))
+ {
+ int __digit = __p - __lit_zero;
+ if (__digit > 15)
+ __digit -= 6;
+ if (__result < __min)
+ __overflow = true;
+ else
+ {
+ const _ValueT __new_result = __result * __base - __digit;
+ __overflow |= __new_result > __result;
+ __result = __new_result;
+ ++__sep_pos;
+ __found_num = true;
+ }
+ }
+ else
+ // Not a valid input item.
+ break;
+ }
+ }
+ else
+ {
+ const _ValueT __max = numeric_limits<_ValueT>::max() / __base;
+ for (; __beg != __end; ++__beg)
+ {
+ const char_type __c = *__beg;
+ if (__lc->_M_use_grouping
+ && __traits_type::eq(__c, __lc->_M_thousands_sep))
+ {
+ if (__sep_pos)
+ {
+ __found_grouping += static_cast<char>(__sep_pos);
+ __sep_pos = 0;
+ }
+ else
+ {
+ __err |= ios_base::failbit;
+ break;
+ }
+ }
+ else if (__traits_type::eq(__c, __lc->_M_decimal_point))
+ break;
+ else if (__p = __traits_type::find(__lit_zero, __len, __c))
+ {
+ int __digit = __p - __lit_zero;
+ if (__digit > 15)
+ __digit -= 6;
+ if (__result > __max)
+ __overflow = true;
+ else
+ {
+ const _ValueT __new_result = __result * __base + __digit;
+ __overflow |= __new_result < __result;
+ __result = __new_result;
+ ++__sep_pos;
+ __found_num = true;
+ }
+ }
+ else
+ break;
+ }
+ }
- // Digit grouping is checked. If grouping and found_grouping don't
- // match, then get very very upset, and set failbit.
- if (__lc->_M_use_grouping && __found_grouping.size())
- {
- // Add the ending grouping.
- __found_grouping += static_cast<char>(__sep_pos);
+ // Digit grouping is checked. If grouping and found_grouping don't
+ // match, then get very very upset, and set failbit.
+ if (__lc->_M_use_grouping && __found_grouping.size())
+ {
+ // Add the ending grouping.
+ __found_grouping += static_cast<char>(__sep_pos);
+
+ const string __grouping = __lc->_M_grouping;
+ if (!std::__verify_grouping(__grouping, __found_grouping))
+ __err |= ios_base::failbit;
+ }
- const string __grouping = __lc->_M_grouping;
- if (!std::__verify_grouping(__grouping, __found_grouping))
- __err |= ios_base::failbit;
- }
+ if (!(__err & ios_base::failbit) && !__overflow
+ && __found_num)
+ __v = __result;
+ else
+ __err |= ios_base::failbit;
- // Finish up.
- __xtrc += char();
- if (__beg == __end)
- __err |= ios_base::eofbit;
- return __beg;
- }
+ if (__beg == __end)
+ __err |= ios_base::eofbit;
+ return __beg;
+ }
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 17. Bad bool parsing
{
if (!(__io.flags() & ios_base::boolalpha))
{
- // Parse bool values as unsigned long.
+ // Parse bool values as long.
// NB: We can't just call do_get(long) here, as it might
// refer to a derived class.
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
-
- unsigned long __ul;
- std::__convert_to_v(__xtrc.c_str(), __ul, __err,
- _S_get_c_locale(), __base);
- if (!(__err & ios_base::failbit) && __ul <= 1)
- __v = __ul;
- else
+ long __l = -1;
+ __beg = _M_extract_int(__beg, __end, __io, __err, __l);
+ if (__l == 0 || __l == 1)
+ __v = __l;
+ else
__err |= ios_base::failbit;
}
else
{
// Parse bool values as alphanumeric.
- typedef char_traits<_CharT> __traits_type;
- typedef typename numpunct<_CharT>::__cache_type __cache_type;
+ typedef char_traits<_CharT> __traits_type;
+ typedef typename numpunct<_CharT>::__cache_type __cache_type;
__use_cache<__cache_type> __uc;
const locale& __loc = __io._M_getloc();
const __cache_type* __lc = __uc(__loc);
- const size_t __tn = __traits_type::length(__lc->_M_truename) - 1;
- const size_t __fn = __traits_type::length(__lc->_M_falsename) - 1;
- bool __testf = false;
- bool __testt = false;
- for (size_t __n = 0; __beg != __end; ++__n)
+ bool __testf = true;
+ bool __testt = true;
+ size_t __n;
+ for (__n = 0; __beg != __end; ++__n, ++__beg)
{
- const char_type __c = *__beg;
- ++__beg;
+ if (__testf)
+ if (__n < __lc->_M_falsename_len)
+ __testf = __traits_type::eq(*__beg, __lc->_M_falsename[__n]);
+ else
+ break;
- if (__n <= __fn)
- __testf = __traits_type::eq(__c, __lc->_M_falsename[__n]);
-
- if (__n <= __tn)
- __testt = __traits_type::eq(__c, __lc->_M_truename[__n]);
-
- if (!(__testf || __testt))
- {
- __err |= ios_base::failbit;
- break;
- }
- else if (__testf && __n == __fn)
- {
- __v = 0;
- break;
- }
- else if (__testt && __n == __tn)
- {
- __v = 1;
- break;
- }
+ if (__testt)
+ if (__n < __lc->_M_truename_len)
+ __testt = __traits_type::eq(*__beg, __lc->_M_truename[__n]);
+ else
+ break;
+
+ if (!__testf && !__testt)
+ break;
}
+ if (__testf && __n == __lc->_M_falsename_len)
+ __v = 0;
+ else if (__testt && __n == __lc->_M_truename_len)
+ __v = 1;
+ else
+ __err |= ios_base::failbit;
+
if (__beg == __end)
__err |= ios_base::eofbit;
}
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, long& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- std::__convert_to_v(__xtrc.c_str(), __v, __err,
- _S_get_c_locale(), __base);
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
template<typename _CharT, typename _InIter>
_InIter
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned short& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- unsigned long __ul;
- std::__convert_to_v(__xtrc.c_str(), __ul, __err,
- _S_get_c_locale(), __base);
- if (!(__err & ios_base::failbit)
- && __ul <= numeric_limits<unsigned short>::max())
- __v = static_cast<unsigned short>(__ul);
- else
- __err |= ios_base::failbit;
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
template<typename _CharT, typename _InIter>
_InIter
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned int& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- unsigned long __ul;
- std::__convert_to_v(__xtrc.c_str(), __ul, __err,
- _S_get_c_locale(), __base);
- if (!(__err & ios_base::failbit)
- && __ul <= numeric_limits<unsigned int>::max())
- __v = static_cast<unsigned int>(__ul);
- else
- __err |= ios_base::failbit;
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
template<typename _CharT, typename _InIter>
_InIter
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned long& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- std::__convert_to_v(__xtrc.c_str(), __v, __err,
- _S_get_c_locale(), __base);
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
#ifdef _GLIBCXX_USE_LONG_LONG
template<typename _CharT, typename _InIter>
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, long long& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- std::__convert_to_v(__xtrc.c_str(), __v, __err,
- _S_get_c_locale(), __base);
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
template<typename _CharT, typename _InIter>
_InIter
num_get<_CharT, _InIter>::
do_get(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned long long& __v) const
- {
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
- std::__convert_to_v(__xtrc.c_str(), __v, __err,
- _S_get_c_locale(), __base);
- return __beg;
- }
+ { return _M_extract_int(__beg, __end, __io, __err, __v); }
#endif
template<typename _CharT, typename _InIter>
string __xtrc;
__xtrc.reserve(32);
__beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
- std::__convert_to_v(__xtrc.c_str(), __v, __err,
- _S_get_c_locale());
+ std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
return __beg;
}
// Prepare for hex formatted input.
typedef ios_base::fmtflags fmtflags;
const fmtflags __fmt = __io.flags();
- const fmtflags __fmtmask = ~(ios_base::showpos | ios_base::basefield
- | ios_base::uppercase | ios_base::internal);
- __io.flags(__fmt & __fmtmask | (ios_base::hex | ios_base::showbase));
+ __io.flags(__fmt & ~ios_base::basefield | ios_base::hex);
- string __xtrc;
- int __base;
- __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
+ unsigned long __ul;
+ __beg = _M_extract_int(__beg, __end, __io, __err, __ul);
// Reset from hex formatted input.
__io.flags(__fmt);
- unsigned long __ul;
- std::__convert_to_v(__xtrc.c_str(), __ul, __err,
- _S_get_c_locale(), __base);
if (!(__err & ios_base::failbit))
__v = reinterpret_cast<void*>(__ul);
else
_OutIter
num_put<_CharT, _OutIter>::
_M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
- _ValueT __v) const
+ _ValueT __v) const
{
typedef typename numpunct<_CharT>::__cache_type __cache_type;
__use_cache<__cache_type> __uc;
const _CharT* __name = __v ? __lc->_M_truename
: __lc->_M_falsename;
- int __len = char_traits<_CharT>::length(__name);
+ int __len = __v ? __lc->_M_truename_len
+ : __lc->_M_falsename_len;
const streamsize __w = __io.width();
if (__w > static_cast<streamsize>(__len))
const ios_base::fmtflags __fmt = ~(ios_base::showpos | ios_base::basefield
| ios_base::uppercase | ios_base::internal);
__io.flags(__flags & __fmt | (ios_base::hex | ios_base::showbase));
- try
- {
- __s = _M_insert_int(__s, __io, __fill,
- reinterpret_cast<unsigned long>(__v));
- __io.flags(__flags);
- }
- catch (...)
- {
- __io.flags(__flags);
- __throw_exception_again;
- }
+
+ __s = _M_insert_int(__s, __io, __fill,
+ reinterpret_cast<unsigned long>(__v));
+ __io.flags(__flags);
return __s;
}
time_get<_CharT, _InIter>::do_date_order() const
{ return time_base::no_order; }
+ // Recursively expand a strftime format string and parse it. Starts w/ %x
+ // and %X from do_get_time() and do_get_date(), which translate to a more
+ // specific string, which may contain yet more strings. I.e. %x => %r =>
+ // %H:%M:%S => extracted characters.
template<typename _CharT, typename _InIter>
void
time_get<_CharT, _InIter>::
for (size_t __i = 0; __beg != __end && __i < __len && !__err; ++__i)
{
- char __c = __format[__i];
- if (__c == '%')
+ if (__ctype.narrow(__format[__i], 0) == '%')
{
// Verify valid formatting code, attempt to extract.
- __c = __format[++__i];
+ char __c = __ctype.narrow(__format[++__i], 0);
int __mem = 0;
if (__c == 'E' || __c == 'O')
- __c = __format[++__i];
+ __c = __ctype.narrow(__format[++__i], 0);
switch (__c)
{
const char* __cs;
else
{
// Verify format and input match, extract and discard.
- if (__c == __ctype.narrow(*__beg, 0))
+ if (__format[__i] == *__beg)
++__beg;
else
__err |= ios_base::failbit;
bool
__verify_grouping(const basic_string<_CharT>& __grouping,
const basic_string<_CharT>& __grouping_tmp)
- {
- size_t __i = 0;
- size_t __j = 0;
- const size_t __len = __grouping.size();
- const size_t __n = __grouping_tmp.size();
+ {
+ const size_t __n = __grouping_tmp.size() - 1;
+ const size_t __min = std::min(__n, __grouping.size() - 1);
+ size_t __i = __n;
bool __test = true;
-
+
// Parsed number groupings have to match the
// numpunct::grouping string exactly, starting at the
// right-most point of the parsed sequence of elements ...
- while (__test && __i < __n - 1)
- for (__j = 0; __test && __j < __len && __i < __n - 1; ++__j, ++__i)
- __test = __grouping[__j] == __grouping_tmp[__n - __i - 1];
+ for (size_t __j = 0; __j < __min && __test; --__i, ++__j)
+ __test = __grouping_tmp[__i] == __grouping[__j];
+ for (; __i && __test; --__i)
+ __test = __grouping_tmp[__i] == __grouping[__min];
// ... but the last parsed grouping can be <= numpunct
// grouping.
- __j == __len ? __j = 0 : __j;
- __test &= __grouping[__j] >= __grouping_tmp[__n - __i - 1];
+ __test &= __grouping_tmp[0] <= __grouping[__min];
return __test;
}
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