money_get_members_char.cc

俄罗斯高人Mamaich的Pocket gcc编译器（运行在PocketPC上）的全部源代码。

  const ios_base::iostate eofbit = ios_base::eofbit;
  ios_base::iostate err = goodbit;
  const locale loc_c = locale::classic();
  const string str = "0.01Eleanor Roosevelt";

  istringstream iss; 
  iss.imbue(locale(loc_c, new mon_get_type));

  // Iterator advanced, state, output.
  const mon_get_type& mg = use_facet<mon_get_type>(iss.getloc());

  // 01 string
  string res1;
  iter_type end1 = mg.get(str.begin(), str.end(), false, iss, err, res1);
  string rem1(end1, str.end());
  VERIFY( err == goodbit );
  VERIFY( res1 == "1" );
  VERIFY( rem1 == "Eleanor Roosevelt" );

  // 02 long double
  iss.clear();
  err = goodbit;
  long double res2;
  iter_type end2 = mg.get(str.begin(), str.end(), false, iss, err, res2);
  string rem2(end2, str.end());
  VERIFY( err == goodbit );
  VERIFY( res2 == 1 );
  VERIFY( rem2 == "Eleanor Roosevelt" );
}

// libstdc++/5280
void test04()
{
#ifdef _GLIBCPP_HAVE_SETENV 
  // Set the global locale to non-"C".
  std::locale loc_de("de_DE@euro");
  std::locale::global(loc_de);

  // Set LANG environment variable to de_DE@euro.
  const char* oldLANG = getenv("LANG");
  if (!setenv("LANG", "de_DE@euro", 1))
    {
      test01();
      test02();
      test03();
      setenv("LANG", oldLANG ? oldLANG : "", 1);
    }
#endif
}

struct My_money_io : public std::moneypunct<char,false>
{
  char_type do_decimal_point() const { return '.'; }
  std::string do_grouping() const { return "\004"; }
  
  std::string do_curr_symbol() const { return "$"; }
  std::string do_positive_sign() const { return ""; }
  std::string do_negative_sign() const { return "-"; }
  
  int do_frac_digits() const { return 2; }

  pattern do_pos_format() const
  {
    pattern pat = { { symbol, none, sign, value } };
    return pat;
  }

  pattern do_neg_format() const
  {
    pattern pat = { { symbol, none, sign, value } };
    return pat;
  }
};

// libstdc++/5579
void test05()
{
  using namespace std;
  typedef istreambuf_iterator<char> InIt;

  bool test = true;

  locale loc(locale::classic(), new My_money_io);

  string bufferp("$1234.56");
  string buffern("$-1234.56");
  string bufferp_ns("1234.56");
  string buffern_ns("-1234.56");

  bool intl = false;

  InIt iendp, iendn, iendp_ns, iendn_ns;
  ios_base::iostate err;
  string valp, valn, valp_ns, valn_ns;

  const money_get<char,InIt>& mg  =
    use_facet<money_get<char, InIt> >(loc);

  istringstream fmtp(bufferp);
  fmtp.imbue(loc);
  InIt ibegp(fmtp);
  mg.get(ibegp,iendp,intl,fmtp,err,valp);
  VERIFY( valp == "123456" );

  istringstream fmtn(buffern);
  fmtn.imbue(loc);
  InIt ibegn(fmtn);
  mg.get(ibegn,iendn,intl,fmtn,err,valn);
  VERIFY( valn == "-123456" );

  istringstream fmtp_ns(bufferp_ns);
  fmtp_ns.imbue(loc);
  InIt ibegp_ns(fmtp_ns);
  mg.get(ibegp_ns,iendp_ns,intl,fmtp_ns,err,valp_ns);
  VERIFY( valp_ns == "123456" );

  istringstream fmtn_ns(buffern_ns);
  fmtn_ns.imbue(loc);
  InIt ibegn_ns(fmtn_ns);
  mg.get(ibegn_ns,iendn_ns,intl,fmtn_ns,err,valn_ns);
  VERIFY( valn_ns == "-123456" );
}

// We were appending to the string val passed by reference, instead
// of constructing a temporary candidate, eventually copied into
// val in case of successful parsing.
void test06()
{
  using namespace std;
  bool test = true;

  typedef istreambuf_iterator<char> InIt;
  InIt iend1, iend2, iend3;

  locale loc;
  string buffer1("123");
  string buffer2("456");
  string buffer3("Golgafrincham"); // From Nathan's original idea.

  string val;

  ios_base::iostate err;

  const money_get<char,InIt>& mg =
    use_facet<money_get<char, InIt> >(loc);

  istringstream fmt1(buffer1);
  InIt ibeg1(fmt1);
  mg.get(ibeg1,iend1,false,fmt1,err,val);
  VERIFY( val == buffer1 );

  istringstream fmt2(buffer2);
  InIt ibeg2(fmt2);
  mg.get(ibeg2,iend2,false,fmt2,err,val);
  VERIFY( val == buffer2 );

  val = buffer3;
  istringstream fmt3(buffer3);
  InIt ibeg3(fmt3);
  mg.get(ibeg3,iend3,false,fmt3,err,val);
  VERIFY( val == buffer3 );
}

struct My_money_io_a : public std::moneypunct<char,false>
{
  char_type do_decimal_point() const { return '.'; }
  std::string do_grouping() const { return "\004"; }
  
  std::string do_curr_symbol() const { return "$"; }
  std::string do_positive_sign() const { return "()"; }
  
  int do_frac_digits() const { return 2; }

  pattern do_pos_format() const
  {
    pattern pat = { { sign, value, space, symbol } };
    return pat;
  }
};

struct My_money_io_b : public std::moneypunct<char,false>
{
  char_type do_decimal_point() const { return '.'; }
  std::string do_grouping() const { return "\004"; }
  
  std::string do_curr_symbol() const { return "$"; }
  std::string do_positive_sign() const { return "()"; }
  
  int do_frac_digits() const { return 2; }

  pattern do_pos_format() const
  {
    pattern pat = { { sign, value, symbol, none } };
    return pat;
  }
};

// This one exercises patterns of the type { X, Y, Z, symbol } and
// { X, Y, symbol, none } for a two character long sign. Therefore
// the optional symbol (showbase is false by default) must be consumed
// if present, since "rest of the sign" is left to read.
void test07()
{
  using namespace std;
  typedef istreambuf_iterator<char> InIt;

  bool intl = false;
  bool test = true;
  ios_base::iostate err;

  locale loc_a(locale::classic(), new My_money_io_a);

  string buffer_a("(1234.56 $)");
  string buffer_a_ns("(1234.56 )");

  InIt iend_a, iend_a_ns;
  string val_a, val_a_ns;

  const money_get<char,InIt>& mg_a  =
    use_facet<money_get<char, InIt> >(loc_a);

  istringstream fmt_a(buffer_a);
  fmt_a.imbue(loc_a);
  InIt ibeg_a(fmt_a);
  mg_a.get(ibeg_a,iend_a,intl,fmt_a,err,val_a);
  VERIFY( val_a == "123456" );

  istringstream fmt_a_ns(buffer_a_ns);
  fmt_a_ns.imbue(loc_a);
  InIt ibeg_a_ns(fmt_a_ns);
  mg_a.get(ibeg_a_ns,iend_a_ns,intl,fmt_a_ns,err,val_a_ns);
  VERIFY( val_a_ns == "123456" );

  locale loc_b(locale::classic(), new My_money_io_b);

  string buffer_b("(1234.56$)");
  string buffer_b_ns("(1234.56)");

  InIt iend_b, iend_b_ns;
  string val_b, val_b_ns;

  const money_get<char,InIt>& mg_b  =
    use_facet<money_get<char, InIt> >(loc_b);

  istringstream fmt_b(buffer_b);
  fmt_b.imbue(loc_b);
  InIt ibeg_b(fmt_b);
  mg_b.get(ibeg_b,iend_b,intl,fmt_b,err,val_b);
  VERIFY( val_b == "123456" );

  istringstream fmt_b_ns(buffer_b_ns);
  fmt_b_ns.imbue(loc_b);
  InIt ibeg_b_ns(fmt_b_ns);
  mg_b.get(ibeg_b_ns,iend_b_ns,intl,fmt_b_ns,err,val_b_ns);
  VERIFY( val_b_ns == "123456" );
}

// http://gcc.gnu.org/ml/libstdc++/2002-05/msg00038.html
void test08()
{
  bool test = true;

  const char* tentLANG = std::setlocale(LC_ALL, "ja_JP.eucjp");
  if (tentLANG != NULL)
    {
      std::string preLANG = tentLANG;
      test01();
      test02();
      test03();
      test05();
      test06();
      test07();
      std::string postLANG = std::setlocale(LC_ALL, NULL);
      VERIFY( preLANG == postLANG );
    }
}

int main()
{
  test01();
  test02();
  test03();
  test04();
  test05();
  test06();
  test07();
  test08();
  return 0;
}