/home/ntakagi/work/STLport-5.1.5/src/num_put.cpp Go to the documentation of this file. /* * Copyright (c) 1999 * Silicon Graphics Computer Systems, Inc. * * Copyright (c) 1999 * Boris Fomitchev * * This material is provided "as is", with absolutely no warranty expressed * or implied. Any use is at your own risk. * * Permission to use or copy this software for any purpose is hereby granted * without fee, provided the above notices are retained on all copies. * Permission to modify the code and to distribute modified code is granted, * provided the above notices are retained, and a notice that the code was * modified is included with the above copyright notice. * */ #include "stlport_prefix.h" #include <locale> #include <ostream> _STLP_BEGIN_NAMESPACE // Note that grouping[0] is the number of digits in the *rightmost* group. // We assume, without checking, that *last is null and that there is enough // space in the buffer to extend the number past [first, last). template <class Char> static ptrdiff_t __insert_grouping_aux(Char* first, Char* last, const string& grouping, Char separator, Char Plus, Char Minus, int basechars) { typedef string::size_type str_size; if (first == last) return 0; int sign = 0; if (*first == Plus || *first == Minus) { sign = 1; ++first; } first += basechars; str_size n = 0; // Index of the current group. Char* cur_group = last; // Points immediately beyond the rightmost // digit of the current group. int groupsize = 0; // Size of the current group. for (;;) { groupsize = n < grouping.size() ? grouping[n] : groupsize; ++n; if (groupsize <= 0 || groupsize >= cur_group - first) break; // Insert a separator character just before position cur_group - groupsize cur_group -= groupsize; ++last; copy_backward(cur_group, last, last + 1); *cur_group = separator; } return (last - first) + sign + basechars; } //Dynamic output buffer version. template <class Char, class Str> static void __insert_grouping_aux( /* __basic_iostring<Char> */ Str& iostr, size_t __group_pos, const string& grouping, Char separator, Char Plus, Char Minus, int basechars) { typedef string::size_type str_size; if (iostr.size() < __group_pos) return; size_t __first_pos = 0; Char __first = *iostr.begin(); if (__first == Plus || __first == Minus) { ++__first_pos; } __first_pos += basechars; str_size n = 0; // Index of the current group. typename basic_string<Char>::iterator cur_group(iostr.begin() + __group_pos); // Points immediately beyond the rightmost // digit of the current group. unsigned int groupsize = 0; // Size of the current group. for (;;) { groupsize = n < grouping.size() ? grouping[n] : groupsize; ++n; if (groupsize <= 0 || groupsize >= ((cur_group - iostr.begin()) + __first_pos)) break; // Insert a separator character just before position cur_group - groupsize cur_group -= groupsize; cur_group = iostr.insert(cur_group, separator); } } //---------------------------------------------------------------------- // num_put _STLP_MOVE_TO_PRIV_NAMESPACE _STLP_DECLSPEC const char* _STLP_CALL __hex_char_table_lo() { return "0123456789abcdefx"; } _STLP_DECLSPEC const char* _STLP_CALL __hex_char_table_hi() { return "0123456789ABCDEFX"; } char* _STLP_CALL __write_integer(char* buf, ios_base::fmtflags flags, long x) { char tmp[64]; char* bufend = tmp+64; char* beg = __write_integer_backward(bufend, flags, x); return copy(beg, bufend, buf); } ptrdiff_t _STLP_CALL __insert_grouping(char * first, char * last, const string& grouping, char separator, char Plus, char Minus, int basechars) { return __insert_grouping_aux(first, last, grouping, separator, Plus, Minus, basechars); } void _STLP_CALL __insert_grouping(__iostring &str, size_t group_pos, const string& grouping, char separator, char Plus, char Minus, int basechars) { __insert_grouping_aux(str, group_pos, grouping, separator, Plus, Minus, basechars); } #if !defined (_STLP_NO_WCHAR_T) ptrdiff_t _STLP_CALL __insert_grouping(wchar_t* first, wchar_t* last, const string& grouping, wchar_t separator, wchar_t Plus, wchar_t Minus, int basechars) { return __insert_grouping_aux(first, last, grouping, separator, Plus, Minus, basechars); } void _STLP_CALL __insert_grouping(__iowstring &str, size_t group_pos, const string& grouping, wchar_t separator, wchar_t Plus, wchar_t Minus, int basechars) { __insert_grouping_aux(str, group_pos, grouping, separator, Plus, Minus, basechars); } #endif _STLP_MOVE_TO_STD_NAMESPACE //---------------------------------------------------------------------- // Force instantiation of num_put<> #if !defined(_STLP_NO_FORCE_INSTANTIATE) template class _STLP_CLASS_DECLSPEC ostreambuf_iterator<char, char_traits<char> >; // template class num_put<char, char*>; template class num_put<char, ostreambuf_iterator<char, char_traits<char> > >; # ifndef _STLP_NO_WCHAR_T template class ostreambuf_iterator<wchar_t, char_traits<wchar_t> >; template class num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >; // template class num_put<wchar_t, wchar_t*>; # endif /* INSTANTIATE_WIDE_STREAMS */ #endif _STLP_END_NAMESPACE // Local Variables: // mode:C++ // End:

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