stlport/src/facets_byname.cpp

/*
 * 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 <hash_map>
#include <vector>

#include <locale>
#include <istream>

#include <algorithm>
#include <functional>

#include "c_locale.h"
#include "locale_impl.h"
#include "acquire_release.h"

_STLP_BEGIN_NAMESPACE

//----------------------------------------------------------------------
// ctype_byname<char>

ctype_byname<char>::ctype_byname(const char* name, size_t refs, _Locale_name_hint* hint) :
    ctype<char>( 0, false, refs),
    _M_ctype(_STLP_PRIV __acquire_ctype(name, hint)) {
  ctype<char>::_M_ctype_table = _M_byname_table;
  if (!_M_ctype)
    locale::_M_throw_runtime_error();

  // We have to do this, instead of just pointer twiddling, because
  // ctype_base::mask isn't the same type as _Locale_mask_t.

  const _Locale_mask_t* p = _Locale_ctype_table(_M_ctype);

  if (!p)
    locale::_M_throw_runtime_error();

  for (size_t i = 0; i < table_size; ++i) {
    _Locale_mask_t __m = p[i];
    if (__m & (upper | lower))
      __m |= alpha;
    _M_byname_table[i] = ctype_base::mask(__m);
  }
}

ctype_byname<char>::~ctype_byname()
{ _STLP_PRIV __release_ctype(_M_ctype); }

char ctype_byname<char>::do_toupper(char c) const
{ return (char)_Locale_toupper(_M_ctype, c); }

char ctype_byname<char>::do_tolower(char c) const
{ return (char)_Locale_tolower(_M_ctype, c); }

const char*
ctype_byname<char>::do_toupper(char* first, const char* last) const {
  for ( ; first != last ; ++first)
    *first = (char)_Locale_toupper(_M_ctype, *first);
  return last;
}

const char*
ctype_byname<char>::do_tolower(char* first, const char* last) const {
  for ( ; first != last ; ++first)
    *first = (char)_Locale_tolower(_M_ctype, *first);
  return last;
}


// Some helper functions used in ctype<>::scan_is and scan_is_not.
#if !defined (_STLP_NO_WCHAR_T)

_STLP_MOVE_TO_PRIV_NAMESPACE

// ctype_byname<wchar_t>

struct _Ctype_byname_w_is_mask {
  typedef wchar_t argument_type;
  typedef bool    result_type;

  /* ctype_base::mask*/ int  M;
  _Locale_ctype* M_ctp;

  _Ctype_byname_w_is_mask(/* ctype_base::mask */ int m, _Locale_ctype* c) : M((int)m), M_ctp(c) {}
  bool operator()(wchar_t c) const
    { return (M & _Locale_wchar_ctype(M_ctp, c, M)) != 0; }
};

_STLP_MOVE_TO_STD_NAMESPACE

ctype_byname<wchar_t>::ctype_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : ctype<wchar_t>(refs),
    _M_ctype(_STLP_PRIV __acquire_ctype(name, hint)) {
  if (!_M_ctype)
    locale::_M_throw_runtime_error();
}

ctype_byname<wchar_t>::~ctype_byname()
{ _STLP_PRIV __release_ctype(_M_ctype); }

bool ctype_byname<wchar_t>::do_is(ctype_base::mask  m, wchar_t c) const
{ return (m & _Locale_wchar_ctype(_M_ctype, c, m)) != 0; }

const wchar_t*
ctype_byname<wchar_t>::do_is(const wchar_t* low, const wchar_t* high,
                             ctype_base::mask * m) const {
  ctype_base::mask all_bits = ctype_base::mask(
    ctype_base::space |
    ctype_base::print |
    ctype_base::cntrl |
    ctype_base::upper |
    ctype_base::lower |
    ctype_base::alpha |
    ctype_base::digit |
    ctype_base::punct |
    ctype_base::xdigit);

  for ( ; low < high; ++low, ++m)
    *m = ctype_base::mask (_Locale_wchar_ctype(_M_ctype, *low, all_bits));
  return high;
}

const wchar_t*
ctype_byname<wchar_t>
  ::do_scan_is(ctype_base::mask  m, const wchar_t* low, const wchar_t* high) const
{ return find_if(low, high, _STLP_PRIV _Ctype_byname_w_is_mask(m, _M_ctype)); }

const wchar_t*
ctype_byname<wchar_t>
  ::do_scan_not(ctype_base::mask  m, const wchar_t* low, const wchar_t* high) const
{ return find_if(low, high, not1(_STLP_PRIV _Ctype_byname_w_is_mask(m, _M_ctype))); }

wchar_t ctype_byname<wchar_t>::do_toupper(wchar_t c) const
{ return _Locale_wchar_toupper(_M_ctype, c); }

const wchar_t*
ctype_byname<wchar_t>::do_toupper(wchar_t* low, const wchar_t* high) const {
  for ( ; low < high; ++low)
    *low = _Locale_wchar_toupper(_M_ctype, *low);
  return high;
}

wchar_t ctype_byname<wchar_t>::do_tolower(wchar_t c) const
{ return _Locale_wchar_tolower(_M_ctype, c); }

const wchar_t*
ctype_byname<wchar_t>::do_tolower(wchar_t* low, const wchar_t* high) const {
  for ( ; low < high; ++low)
    *low = _Locale_wchar_tolower(_M_ctype, *low);
  return high;
}

#endif /* WCHAR_T */

// collate_byname<char>
collate_byname<char>::collate_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : collate<char>(refs),
    _M_collate(_STLP_PRIV __acquire_collate(name, hint)) {
  if (!_M_collate)
    locale::_M_throw_runtime_error();
}

collate_byname<char>::~collate_byname()
{ _STLP_PRIV __release_collate(_M_collate); }

int collate_byname<char>::do_compare(const char* __low1,
                                     const char* __high1,
                                     const char* __low2,
                                     const char* __high2) const {
  return _Locale_strcmp(_M_collate,
                        __low1, __high1 - __low1,
                        __low2, __high2 - __low2);
}

collate_byname<char>::string_type
collate_byname<char>::do_transform(const char* low, const char* high) const {
  if (low == high)
    return string_type();

  size_t n = _Locale_strxfrm(_M_collate, NULL, 0, low, high - low);

  // NOT PORTABLE.  What we're doing relies on internal details of the
  // string implementation.  (Contiguity of string elements and presence
  // of trailing zero.)
  string_type buf(n, 0);
  _Locale_strxfrm(_M_collate, &(*buf.begin()), n + 1, low, high - low);
  return buf;
}


#if !defined (_STLP_NO_WCHAR_T)

// collate_byname<wchar_t>

collate_byname<wchar_t>::collate_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : collate<wchar_t>(refs),
    _M_collate(_STLP_PRIV __acquire_collate(name, hint)) {
  if (!_M_collate)
    locale::_M_throw_runtime_error();
}

collate_byname<wchar_t>::~collate_byname()
{ _STLP_PRIV __release_collate(_M_collate); }

int collate_byname<wchar_t>::do_compare(const wchar_t* low1,
                                        const wchar_t* high1,
                                        const wchar_t* low2,
                                        const wchar_t* high2) const {
  return _Locale_strwcmp(_M_collate,
                         low1, high1 - low1,
                         low2, high2 - low2);
}

collate_byname<wchar_t>::string_type
collate_byname<wchar_t>::do_transform(const wchar_t* low,
                                      const wchar_t* high) const {
  if (low == high)
    return string_type();

  size_t n = _Locale_strwxfrm(_M_collate, NULL, 0, low, high - low);

  // NOT PORTABLE.  What we're doing relies on internal details of the
  // string implementation.  (Contiguity of string elements and presence
  // of trailing zero.)
  string_type buf(n, 0);
  _Locale_strwxfrm(_M_collate, &(*buf.begin()), n + 1, low, high - low);
  return buf;
}

#endif /*  _STLP_NO_WCHAR_T */

_STLP_END_NAMESPACE

#if !defined (_STLP_NO_MBSTATE_T)

_STLP_BEGIN_NAMESPACE

//----------------------------------------------------------------------
// codecvt_byname<char>

codecvt_byname<char, char, mbstate_t>
  ::codecvt_byname(const char* /* name */, size_t refs)
    : codecvt<char, char, mbstate_t>(refs) {}

codecvt_byname<char, char, mbstate_t>::~codecvt_byname() {}


#  if !defined (_STLP_NO_WCHAR_T)

//----------------------------------------------------------------------
// codecvt_byname<wchar_t>
codecvt_byname<wchar_t, char, mbstate_t>
  ::codecvt_byname(const char* name, size_t refs, _Locale_name_hint* hint)
    : codecvt<wchar_t, char, mbstate_t>(refs),
      _M_ctype(_STLP_PRIV __acquire_ctype(name, hint)) {
  if (!_M_ctype)
    locale::_M_throw_runtime_error();
}

codecvt_byname<wchar_t, char, mbstate_t>::~codecvt_byname()
{ _STLP_PRIV __release_ctype(_M_ctype); }

codecvt<wchar_t, char, mbstate_t>::result
codecvt_byname<wchar_t, char, mbstate_t>
  ::do_out(state_type&     state,
           const wchar_t*  from,
           const wchar_t*  from_end,
           const wchar_t*& from_next,
           char*           to,
           char*           to_limit,
           char*&          to_next) const {
  while (from != from_end) {
    size_t chars_stored = _Locale_wctomb(_M_ctype,
                                         to, to_limit - to, *from,
                                         &state);
    if (chars_stored == (size_t) -1) {
      from_next = from;
      to_next   = to;
      return error;
    }
    else if (chars_stored == (size_t) -2) {
      from_next = from;
      to_next   = to;
      return partial;
    }

    ++from;
    to += chars_stored;
  }

  from_next = from;
  to_next   = to;
  return ok;
}

codecvt<wchar_t, char, mbstate_t>::result
codecvt_byname<wchar_t, char, mbstate_t>
  ::do_in(state_type&         state,
          const extern_type*  from,
          const extern_type*  from_end,
          const extern_type*& from_next,
          intern_type*        to,
          intern_type*        ,
          intern_type*&       to_next) const {
  while (from != from_end) {
    size_t chars_read = _Locale_mbtowc(_M_ctype,
                                       to, from, from_end - from,
                                       &state);
    if (chars_read == (size_t) -1) {
      from_next = from;
      to_next   = to;
      return error;
    }

    if (chars_read == (size_t) -2) {
      from_next = from;
      to_next   = to;
      return partial;
    }

    from += chars_read;
    to++;
  }

  from_next = from;
  to_next   = to;
  return ok;
}

codecvt<wchar_t, char, mbstate_t>::result
codecvt_byname<wchar_t, char, mbstate_t>
  ::do_unshift(state_type&   state,
               extern_type*  to,
               extern_type*  to_limit,
               extern_type*& to_next) const {
  to_next = to;
  size_t result = _Locale_unshift(_M_ctype, &state,
                                  to, to_limit - to, &to_next);
  if (result == (size_t) -1)
    return error;
  else if (result == (size_t) -2)
    return partial;
  else
#    if defined (__ISCPP__)
    return /*to_next == to ? noconv :*/ ok;
#    else
    return to_next == to ? noconv : ok;
#    endif
}

int
codecvt_byname<wchar_t, char, mbstate_t>::do_encoding() const _STLP_NOTHROW {
  if (_Locale_is_stateless(_M_ctype)) {
    int max_width = _Locale_mb_cur_max(_M_ctype);
    int min_width = _Locale_mb_cur_min(_M_ctype);
    return min_width == max_width ? min_width : 0;
  }
  else
    return -1;
}

bool codecvt_byname<wchar_t, char, mbstate_t>
  ::do_always_noconv() const _STLP_NOTHROW {
  return false;
}

int
codecvt_byname<wchar_t, char, mbstate_t>::do_length(const state_type&,
                                                    const  extern_type* from, const  extern_type* end,
                                                    size_t mx) const
{ return (int)(min) ((size_t) (end - from), mx); }

int
codecvt_byname<wchar_t, char, mbstate_t>::do_max_length() const _STLP_NOTHROW
{ return _Locale_mb_cur_max(_M_ctype); }
#  endif

_STLP_END_NAMESPACE

#endif /* MBSTATE_T */

_STLP_BEGIN_NAMESPACE

// numpunct_byname<char>
numpunct_byname<char>::numpunct_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : numpunct<char>(refs),
    _M_numeric(_STLP_PRIV __acquire_numeric(name, hint)) {
  if (!_M_numeric)
    locale::_M_throw_runtime_error();

  _M_truename  = _Locale_true(_M_numeric);
  _M_falsename = _Locale_false(_M_numeric);
}

numpunct_byname<char>::~numpunct_byname()
{ _STLP_PRIV __release_numeric(_M_numeric); }

char numpunct_byname<char>::do_decimal_point() const
{ return _Locale_decimal_point(_M_numeric); }

char numpunct_byname<char>::do_thousands_sep() const
{ return _Locale_thousands_sep(_M_numeric); }

string numpunct_byname<char>::do_grouping() const {
  const char * __grouping = _Locale_grouping(_M_numeric);
  if (__grouping != NULL && __grouping[0] == CHAR_MAX)
    __grouping = "";
  return __grouping;
}

//----------------------------------------------------------------------
// numpunct<wchar_t>

#if !defined (_STLP_NO_WCHAR_T)

// numpunct_byname<wchar_t>

numpunct_byname<wchar_t>::numpunct_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : numpunct<wchar_t>(refs),
    _M_numeric(_STLP_PRIV __acquire_numeric(name, hint)) {
  if (!_M_numeric)
    locale::_M_throw_runtime_error();

  const char* truename  = _Locale_true(_M_numeric);
  const char* falsename = _Locale_false(_M_numeric);
  _M_truename.resize(strlen(truename));
  _M_falsename.resize(strlen(falsename));
  copy(truename,  truename  + strlen(truename), _M_truename.begin());
  copy(falsename, falsename + strlen(falsename), _M_falsename.begin());
}

numpunct_byname<wchar_t>::~numpunct_byname()
{ _STLP_PRIV __release_numeric(_M_numeric); }

wchar_t numpunct_byname<wchar_t>::do_decimal_point() const
{ return (wchar_t) _Locale_decimal_point(_M_numeric); }

wchar_t numpunct_byname<wchar_t>::do_thousands_sep() const
{ return (wchar_t) _Locale_thousands_sep(_M_numeric); }

string numpunct_byname<wchar_t>::do_grouping() const {
  const char * __grouping = _Locale_grouping(_M_numeric);
  if (__grouping != NULL && __grouping[0] == CHAR_MAX)
    __grouping = "";
  return __grouping;
}

#endif

_STLP_MOVE_TO_PRIV_NAMESPACE

static void _Init_monetary_formats(money_base::pattern& pos_format,
                                   money_base::pattern& neg_format,
                                   _Locale_monetary * monetary) {
  switch (_Locale_p_sign_posn(monetary)) {
    case 0: // Parentheses surround the quantity and currency_symbol
    case 1: // The sign string precedes the quantity and currency_symbol
      pos_format.field[0] = (char) money_base::sign;
      if (_Locale_p_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a positive value
        pos_format.field[1] = (char) money_base::symbol;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::space;
          pos_format.field[3] = (char) money_base::value;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::value;
          pos_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a positive value
        pos_format.field[1] = (char) money_base::value;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::space;
          pos_format.field[3] = (char) money_base::symbol;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::symbol;
          pos_format.field[3] = (char) money_base::none;
        }
      }
      break;
    case 2: // The sign string succeeds the quantity and currency_symbol.
      if (_Locale_p_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a positive value
        pos_format.field[0] = (char) money_base::symbol;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::space;
          pos_format.field[2] = (char) money_base::value;
          pos_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::value;
          pos_format.field[2] = (char) money_base::sign;
          pos_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a positive value
        pos_format.field[0] = (char) money_base::value;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::space;
          pos_format.field[2] = (char) money_base::symbol;
          pos_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::symbol;
          pos_format.field[2] = (char) money_base::sign;
          pos_format.field[3] = (char) money_base::none;
        }
      }
      break;
    case 3: // The sign string immediately precedes the currency_symbol.
      if (_Locale_p_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a positive value
        pos_format.field[0] = (char) money_base::sign;
        pos_format.field[1] = (char) money_base::symbol;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::space;
          pos_format.field[3] = (char) money_base::value;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[2] = (char) money_base::value;
          pos_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a positive value
        pos_format.field[0] = (char) money_base::value;
        pos_format.field[1] = (char) money_base::sign;
        pos_format.field[2] = (char) money_base::symbol;
        pos_format.field[3] = (char) money_base::none;
      }
      break;
    case 4: // The sign string immediately succeeds the currency_symbol.
    default:
      if (_Locale_p_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a positive value
        pos_format.field[0] = (char) money_base::symbol;
        pos_format.field[1] = (char) money_base::sign;
        pos_format.field[2] = (char) money_base::value;
        pos_format.field[3] = (char) money_base::none;
      } else {
        // 0 if currency_symbol succeeds a positive value
        pos_format.field[0] = (char) money_base::value;
        if (_Locale_p_sep_by_space(monetary)) {
          // a space separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::space;
          pos_format.field[2] = (char) money_base::symbol;
          pos_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a positive value.
          pos_format.field[1] = (char) money_base::symbol;
          pos_format.field[2] = (char) money_base::sign;
          pos_format.field[3] = (char) money_base::none;
        }
      }
    break;
  }

  switch (_Locale_n_sign_posn(monetary)) {
    case 0: // Parentheses surround the quantity and currency_symbol
    case 1: // The sign string precedes the quantity and currency_symbol
      neg_format.field[0] = (char) money_base::sign;
      if (_Locale_n_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a negative value
        neg_format.field[1] = (char) money_base::symbol;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::space;
          neg_format.field[3] = (char) money_base::value;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::value;
          neg_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a negative value
        neg_format.field[1] = (char) money_base::value;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::space;
          neg_format.field[3] = (char) money_base::symbol;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::symbol;
          neg_format.field[3] = (char) money_base::none;
        }
      }
      break;
    case 2: // The sign string succeeds the quantity and currency_symbol.
      if (_Locale_n_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a negative value
        neg_format.field[0] = (char) money_base::symbol;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::space;
          neg_format.field[2] = (char) money_base::value;
          neg_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::value;
          neg_format.field[2] = (char) money_base::sign;
          neg_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a negative value
        neg_format.field[0] = (char) money_base::value;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::space;
          neg_format.field[2] = (char) money_base::symbol;
          neg_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::symbol;
          neg_format.field[2] = (char) money_base::sign;
          neg_format.field[3] = (char) money_base::none;
        }
      }
      break;
    case 3: // The sign string immediately precedes the currency_symbol.
      if (_Locale_n_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a negative value
        neg_format.field[0] = (char) money_base::sign;
        neg_format.field[1] = (char) money_base::symbol;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::space;
          neg_format.field[3] = (char) money_base::value;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[2] = (char) money_base::value;
          neg_format.field[3] = (char) money_base::none;
        }
      } else {
        // 0 if currency_symbol succeeds a negative value
        neg_format.field[0] = (char) money_base::value;
        neg_format.field[1] = (char) money_base::sign;
        neg_format.field[2] = (char) money_base::symbol;
        neg_format.field[3] = (char) money_base::none;
      }
      break;
    case 4: // The sign string immediately succeeds the currency_symbol.
    default:
      if (_Locale_n_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a negative value
        neg_format.field[0] = (char) money_base::symbol;
        neg_format.field[1] = (char) money_base::sign;
        neg_format.field[2] = (char) money_base::value;
        neg_format.field[3] = (char) money_base::none;
      } else {
        // 0 if currency_symbol succeeds a negative value
        neg_format.field[0] = (char) money_base::value;
        if (_Locale_n_sep_by_space(monetary)) {
          // a space separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::space;
          neg_format.field[2] = (char) money_base::symbol;
          neg_format.field[3] = (char) money_base::sign;
        } else {
          // a space not separates currency_symbol from a negative value.
          neg_format.field[1] = (char) money_base::symbol;
          neg_format.field[2] = (char) money_base::sign;
          neg_format.field[3] = (char) money_base::none;
        }
      }
      break;
  }
}

// international variant of monetary

/*
 * int_curr_symbol
 *
 *   The international currency symbol. The operand is a four-character
 *   string, with the first three characters containing the alphabetic
 *   international currency symbol in accordance with those specified
 *   in the ISO 4217 specification. The fourth character is the character used
 *   to separate the international currency symbol from the monetary quantity.
 *
 * (http://www.opengroup.org/onlinepubs/7990989775/xbd/locale.html)
 */

/*
 * Standards are unclear in the usage of international currency
 * and monetary formats.
 * But I am expect that international currency symbol should be the first
 * (not depends upon where currency symbol situated in the national
 * format).
 *
 * If this isn't so, let's see:
 *       1 234.56 RUR
 *       GBP 1,234.56
 *       USD 1,234.56
 * The situation really is worse than you see above:
 * RUR typed wrong here---it prints '1 234.56 RUR ' (see space after RUR).
 * This is due to intl_fmp.curr_symbol() == "RUR ". (see reference in comments
 * above).
 *
 */

static void _Init_monetary_formats_int(money_base::pattern& pos_format,
                                       money_base::pattern& neg_format,
                                       _Locale_monetary * monetary)
{
  pos_format.field[0] = (char) money_base::symbol;
  // pos_format.field[1] = (char) money_base::space;

  switch (_Locale_p_sign_posn(monetary)) {
    case 0: // Parentheses surround the quantity and currency_symbol
    case 1: // The sign string precedes the quantity and currency_symbol
      pos_format.field[1] = (char) money_base::sign;
      pos_format.field[2] = (char) money_base::value;
      break;
    case 2: // The sign string succeeds the quantity and currency_symbol.
      pos_format.field[1] = (char) money_base::value;
      pos_format.field[2] = (char) money_base::sign;
      break;
    case 3: // The sign string immediately precedes the currency_symbol.
    case 4: // The sign string immediately succeeds the currency_symbol.
    default:
      if (_Locale_p_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a positive value
        pos_format.field[1] = (char) money_base::sign;
        pos_format.field[2] = (char) money_base::value;
      } else {
        // 0 if currency_symbol succeeds a positive value
        pos_format.field[1] = (char) money_base::value;
        pos_format.field[2] = (char) money_base::sign;
      }
      break;
  }
  pos_format.field[3] = (char) money_base::none;

  neg_format.field[0] = (char) money_base::symbol;
  // neg_format.field[1] = (char) money_base::space;

  switch (_Locale_n_sign_posn(monetary)) {
    case 0: // Parentheses surround the quantity and currency_symbol
    case 1: // The sign string precedes the quantity and currency_symbol
      neg_format.field[1] = (char) money_base::sign;
      neg_format.field[2] = (char) money_base::value;
      break;
    case 2: // The sign string succeeds the quantity and currency_symbol.
      neg_format.field[1] = (char) money_base::value;
      neg_format.field[2] = (char) money_base::sign;
      break;
    case 3: // The sign string immediately precedes the currency_symbol.
    case 4: // The sign string immediately succeeds the currency_symbol.
    default:
      if (_Locale_n_cs_precedes(monetary)) {
        // 1 if currency_symbol precedes a negative value
        neg_format.field[1] = (char) money_base::sign;
        neg_format.field[2] = (char) money_base::value;
      } else {
        // 0 if currency_symbol succeeds a negative value
        neg_format.field[1] = (char) money_base::value;
        neg_format.field[2] = (char) money_base::sign;
      }
      break;
  }
  neg_format.field[3] = (char) money_base::none;
}

_STLP_MOVE_TO_STD_NAMESPACE

//
// moneypunct_byname<>
//
moneypunct_byname<char, true>::moneypunct_byname(const char * name,
                                                 size_t refs, _Locale_name_hint* hint):
  moneypunct<char, true>(refs), _M_monetary(_STLP_PRIV __acquire_monetary(name, hint)) {
  if (!_M_monetary)
    locale::_M_throw_runtime_error();
  _STLP_PRIV _Init_monetary_formats_int(_M_pos_format, _M_neg_format, _M_monetary);
}

moneypunct_byname<char, true>::~moneypunct_byname()
{ _STLP_PRIV __release_monetary(_M_monetary); }

char moneypunct_byname<char, true>::do_decimal_point() const
{ return _Locale_mon_decimal_point(_M_monetary); }

char moneypunct_byname<char, true>::do_thousands_sep() const
{ return _Locale_mon_thousands_sep(_M_monetary); }

string moneypunct_byname<char, true>::do_grouping() const
{ return _Locale_mon_grouping(_M_monetary); }

string moneypunct_byname<char, true>::do_curr_symbol() const
{ return _Locale_int_curr_symbol(_M_monetary); }

string moneypunct_byname<char, true>::do_positive_sign() const
{ return _Locale_positive_sign(_M_monetary); }

string moneypunct_byname<char, true>::do_negative_sign() const
{ return _Locale_negative_sign(_M_monetary); }

int moneypunct_byname<char, true>::do_frac_digits() const
{ return _Locale_int_frac_digits(_M_monetary); }

moneypunct_byname<char, false>::moneypunct_byname(const char * name,
                                                  size_t refs, _Locale_name_hint* hint):
  moneypunct<char, false>(refs), _M_monetary(_STLP_PRIV __acquire_monetary(name, hint)) {
  if (!_M_monetary)
    locale::_M_throw_runtime_error();
  _STLP_PRIV _Init_monetary_formats(_M_pos_format, _M_neg_format, _M_monetary);
}

moneypunct_byname<char, false>::~moneypunct_byname()
{ _STLP_PRIV __release_monetary(_M_monetary); }

char moneypunct_byname<char, false>::do_decimal_point() const
{ return _Locale_mon_decimal_point(_M_monetary); }

char moneypunct_byname<char, false>::do_thousands_sep() const
{ return _Locale_mon_thousands_sep(_M_monetary); }

string moneypunct_byname<char, false>::do_grouping() const
{ return _Locale_mon_grouping(_M_monetary); }

string moneypunct_byname<char, false>::do_curr_symbol() const
{ return _Locale_currency_symbol(_M_monetary); }

string moneypunct_byname<char, false>::do_positive_sign() const
{ return _Locale_positive_sign(_M_monetary); }

string moneypunct_byname<char, false>::do_negative_sign() const
{ return _Locale_negative_sign(_M_monetary); }

int moneypunct_byname<char, false>::do_frac_digits() const
{ return _Locale_frac_digits(_M_monetary); }

//
// moneypunct_byname<wchar_t>
//
#if !defined (_STLP_NO_WCHAR_T)

moneypunct_byname<wchar_t, true>::moneypunct_byname(const char * name,
                                                    size_t refs, _Locale_name_hint* hint):
  moneypunct<wchar_t, true>(refs), _M_monetary(_STLP_PRIV __acquire_monetary(name, hint)) {
  if (!_M_monetary)
    locale::_M_throw_runtime_error();
  _STLP_PRIV _Init_monetary_formats_int(_M_pos_format, _M_neg_format, _M_monetary);
}

moneypunct_byname<wchar_t, true>::~moneypunct_byname()
{ _STLP_PRIV __release_monetary(_M_monetary); }

wchar_t moneypunct_byname<wchar_t, true>::do_decimal_point() const
{ return _Locale_mon_decimal_point(_M_monetary); }

wchar_t moneypunct_byname<wchar_t, true>::do_thousands_sep() const
{ return _Locale_mon_thousands_sep(_M_monetary); }

string moneypunct_byname<wchar_t, true>::do_grouping() const
{ return _Locale_mon_grouping(_M_monetary); }

inline wstring __do_widen (string const& str) {
#if defined (_STLP_NO_MEMBER_TEMPLATES) || defined (_STLP_MSVC) || defined(__MRC__) || defined(__SC__) //*ty 05/26/2001 - added workaround for mpw
  wstring::_Reserve_t __Reserve;
  size_t __size = str.size();
  wstring result(__Reserve, __size);
  copy(str.begin(), str.end(), result.begin());
#else
  wstring result(str.begin(), str.end());
#endif
  return result;
}

wstring moneypunct_byname<wchar_t, true>::do_curr_symbol() const
{ return __do_widen(_Locale_int_curr_symbol(_M_monetary)); }

wstring moneypunct_byname<wchar_t, true>::do_positive_sign() const
{ return __do_widen(_Locale_positive_sign(_M_monetary)); }

wstring moneypunct_byname<wchar_t, true>::do_negative_sign() const
{ return __do_widen(_Locale_negative_sign(_M_monetary)); }

int moneypunct_byname<wchar_t, true>::do_frac_digits() const
{ return _Locale_int_frac_digits(_M_monetary); }

moneypunct_byname<wchar_t, false>::moneypunct_byname(const char * name,
                                                     size_t refs, _Locale_name_hint* hint):
  moneypunct<wchar_t, false>(refs), _M_monetary(_STLP_PRIV __acquire_monetary(name, hint)) {
  if (!_M_monetary)
    locale::_M_throw_runtime_error() ;
  _STLP_PRIV _Init_monetary_formats(_M_pos_format, _M_neg_format, _M_monetary);
}

moneypunct_byname<wchar_t, false>::~moneypunct_byname()
{ _STLP_PRIV __release_monetary(_M_monetary); }

wchar_t moneypunct_byname<wchar_t, false>::do_decimal_point() const
{ return _Locale_mon_decimal_point(_M_monetary); }

wchar_t moneypunct_byname<wchar_t, false>::do_thousands_sep() const
{ return _Locale_mon_thousands_sep(_M_monetary); }

string moneypunct_byname<wchar_t, false>::do_grouping() const
{ return _Locale_mon_grouping(_M_monetary); }

wstring moneypunct_byname<wchar_t, false>::do_curr_symbol() const
{ return __do_widen(_Locale_currency_symbol(_M_monetary)); }

wstring moneypunct_byname<wchar_t, false>::do_positive_sign() const
{ return __do_widen(_Locale_positive_sign(_M_monetary)); }

wstring moneypunct_byname<wchar_t, false>::do_negative_sign() const
{ return __do_widen(_Locale_negative_sign(_M_monetary)); }

int moneypunct_byname<wchar_t, false>::do_frac_digits() const
{ return _Locale_frac_digits(_M_monetary); }

#endif

_STLP_END_NAMESPACE

#include "message_facets.h"

_STLP_BEGIN_NAMESPACE

_STLP_MOVE_TO_PRIV_NAMESPACE

void _Catalog_locale_map::insert(nl_catd_type key, const locale& L) {
  _STLP_TRY {
#if !defined(_STLP_NO_TYPEINFO) && !defined(_STLP_NO_RTTI)
    // Don't bother to do anything unless we're using a non-default ctype facet
# ifdef _STLP_NO_WCHAR_T
    typedef char _Char;
# else
    typedef wchar_t _Char;
# endif

    typedef ctype<_Char> wctype;
    wctype const& wct = use_facet<wctype>(L);
    if (typeid(wct) != typeid(wctype)) {
# endif /* _STLP_NO_TYPEINFO */
      if (!M)
        M = _CHECK_PTR(new map_type);

#if defined (__SC__)
      if (!M) delete M;
#endif
      M->insert(map_type::value_type(key, L));
#if !defined(_STLP_NO_TYPEINFO) && !defined(_STLP_NO_RTTI)
    }
# endif /* _STLP_NO_TYPEINFO */
  }
  _STLP_CATCH_ALL {}
}

void _Catalog_locale_map::erase(nl_catd_type key) {
  if (M)
    M->erase(key);
}

locale _Catalog_locale_map::lookup(nl_catd_type key) const {
  if (M) {
    map_type::const_iterator i = M->find(key);
    return i != M->end() ? (*i).second : locale::classic();
  }
  else
    return locale::classic();
}


#if defined (_STLP_USE_NL_CATD_MAPPING)
_STLP_VOLATILE __stl_atomic_t _Catalog_nl_catd_map::_count = 0;

messages_base::catalog _Catalog_nl_catd_map::insert(nl_catd_type cat) {
  messages_base::catalog &res = Mr[cat];
  if ( res == 0 ) {
#if defined (_STLP_ATOMIC_INCREMENT)
    res = __STATIC_CAST(int, _STLP_ATOMIC_INCREMENT(&_count));
#else
    static _STLP_STATIC_MUTEX _Count_lock _STLP_MUTEX_INITIALIZER;
    {
      _STLP_auto_lock sentry(_Count_lock);
      res = __STATIC_CAST(int, ++_count);
    }
#endif
    M[res] = cat;
  }
  return res;
}

void _Catalog_nl_catd_map::erase(messages_base::catalog cat) {
  map_type::iterator mit(M.find(cat));
  if (mit != M.end()) {
    Mr.erase((*mit).second);
    M.erase(mit);
  }
}
#endif

//----------------------------------------------------------------------
//
//

_Messages_impl::_Messages_impl(bool is_wide, _Locale_name_hint* hint) :
  _M_message_obj(0), _M_map(0) {
  _M_delete = true;
  if (is_wide)
    _M_map = _CHECK_PTR(new _Catalog_locale_map);
  _M_message_obj = __acquire_messages("C", hint);
}

_Messages_impl::_Messages_impl(bool is_wide, _Locale_messages* msg_obj ) :
  _M_message_obj(msg_obj), _M_map(0) {
  _M_delete = true;
  if (is_wide)
    _M_map = _CHECK_PTR(new _Catalog_locale_map);
}

_Messages_impl::~_Messages_impl() {
  __release_messages(_M_message_obj);
  if (_M_map) delete _M_map;
}

_Messages::catalog _Messages_impl::do_open(const string& filename, const locale& L) const {
  nl_catd_type result = _M_message_obj ? _Locale_catopen(_M_message_obj, filename.c_str())
    : (nl_catd_type)(-1);

  if ( result != (nl_catd_type)(-1) ) {
    if ( _M_map != 0 ) {
      _M_map->insert(result, L);
    }
    return _M_cat.insert( result );
  }

  return -1;
}

string _Messages_impl::do_get(catalog cat,
                              int set, int p_id, const string& dfault) const {
  return _M_message_obj != 0 && cat >= 0
    ? string(_Locale_catgets(_M_message_obj, _M_cat[cat], set, p_id, dfault.c_str()))
    : dfault;
}

#if !defined (_STLP_NO_WCHAR_T)

wstring
_Messages_impl::do_get(catalog thecat,
                       int set, int p_id, const wstring& dfault) const {
  typedef ctype<wchar_t> wctype;
  const wctype& ct = use_facet<wctype>(_M_map->lookup( _M_cat[thecat] ) );

  const char* str = _Locale_catgets(_M_message_obj, _M_cat[thecat], set, p_id, "");

  // Verify that the lookup failed; an empty string might represent success.
  if (!str)
    return dfault;
  else if (str[0] == '\0') {
    const char* str2 = _Locale_catgets(_M_message_obj, _M_cat[thecat], set, p_id, "*");
    if (!str2 || ((str2[0] == '*') && (str2[1] == '\0')))
      return dfault;
  }

  // str is correct.  Now we must widen it to get a wstring.
  size_t n = strlen(str);

  // NOT PORTABLE.  What we're doing relies on internal details of the
  // string implementation.  (Contiguity of string elements.)
  wstring result(n, wchar_t(0));
  ct.widen(str, str + n, &*result.begin());
  return result;
}

#endif

void _Messages_impl::do_close(catalog thecat) const {
  if (_M_message_obj)
    _Locale_catclose(_M_message_obj, _M_cat[thecat]);
  if (_M_map) _M_map->erase(_M_cat[thecat]);
  _M_cat.erase( thecat );
}

_STLP_MOVE_TO_STD_NAMESPACE

//----------------------------------------------------------------------
// messages<char>

messages<char>::messages(size_t refs) :
  locale::facet(refs), _M_impl(_CHECK_PTR(new _STLP_PRIV _Messages_impl(false))) {}

messages<char>::messages(size_t refs, _Locale_messages* msg_obj) : locale::facet(refs),
  _M_impl(_CHECK_PTR(new _STLP_PRIV _Messages_impl(false, msg_obj))) {}


//----------------------------------------------------------------------
// messages_byname<char>

messages_byname<char>::messages_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : messages<char>(refs, name ? _STLP_PRIV __acquire_messages(name, hint) : 0) {}

messages_byname<char>::~messages_byname() {}

#if !defined (_STLP_NO_WCHAR_T)

//----------------------------------------------------------------------
// messages<wchar_t>

messages<wchar_t>::messages(size_t refs)  :
  locale::facet(refs), _M_impl(_CHECK_PTR(new _STLP_PRIV _Messages_impl(true))) {}

messages<wchar_t>::messages(size_t refs, _Locale_messages* msg_obj)
  : locale::facet(refs),
    _M_impl(_CHECK_PTR(new _STLP_PRIV _Messages_impl(true, msg_obj))) {}

//----------------------------------------------------------------------
// messages_byname<wchar_t>


messages_byname<wchar_t>::messages_byname(const char* name, size_t refs, _Locale_name_hint* hint)
  : messages<wchar_t>(refs, name ? _STLP_PRIV __acquire_messages(name, hint) : 0) {}

messages_byname<wchar_t>::~messages_byname() {}

#endif

_STLP_END_NAMESPACE