locale_facets.tcc (money_get::do_get(string)): Deal correctly with !(__io.flags() & ios_base::showbase) for case...

2002-02-04  Paolo Carlini  <pcarlini@unitus.it>

        libstdc++/5579
        * include/bits/locale_facets.tcc (money_get::do_get(string)):
        Deal correctly with !(__io.flags() & ios_base::showbase)
        for case money_base::symbol.
        * testsuite/22_locale/money_get_members_char.cc: Add test05.
        * testsuite/22_locale/money_get_members_wchar_t.cc: Add test05.

From-SVN: r49489

libstdc++-v3/ChangeLog

@@ -1,3 +1,12 @@
+2002-02-04  Paolo Carlini  <pcarlini@unitus.it>
+
+	libstdc++/5579
+	* include/bits/locale_facets.tcc (money_get::do_get(string)):
+	Deal correctly with !(__io.flags() & ios_base::showbase)
+	for case money_base::symbol.
+	* testsuite/22_locale/money_get_members_char.cc: Add test05.
+	* testsuite/22_locale/money_get_members_wchar_t.cc: Add test05.
+
 2002-02-02  Paolo Carlini  <pcarlini@unitus.it>
 
 	* testsuite/22_locale/operators.cc

libstdc++-v3/include/bits/locale_facets.tcc

@@ -938,20 +938,25 @@ namespace std
 	  switch (__which)
 		{
 		case money_base::symbol:
-		  if (__io.flags() & ios_base::showbase)
+		  if (__io.flags() & ios_base::showbase || __i < 2 ||
+		      __i == 2 && static_cast<part>(__p.field[3]) != money_base::none)
 		    {
-		      // Symbol is required.
+		      // According to 22.2.6.1.2.2, symbol is required if
+		      // (__io.flags() & ios_base::showbase), otherwise is optional
+		      // and consumed only if other characters are needed to complete
+		      // the format.
 		      const string_type __symbol = __intl ? __mpt.curr_symbol()
 						    	 : __mpf.curr_symbol();
 		      size_type __len = __symbol.size();
-		      size_type __i = 0;
+		      size_type __j = 0;
 		      while (__beg != __end 
-			     && __i < __len && __symbol[__i] == __c)
+			     && __j < __len && __symbol[__j] == __c)
 			{
 			  __c = *(++__beg);
-			  ++__i;
+			  ++__j;
 			}
-		      if (__i != __len)
+		      // When (__io.flags() & ios_base::showbase) symbol is required.
+		      if (__j != __len && (__io.flags() & ios_base::showbase))
 			__testvalid = false;
 		    }
 		  break;

libstdc++-v3/testsuite/22_locale/money_get_members_char.cc

@@ -309,11 +309,86 @@ void test04()
 #endif
 }
 
+class My_money_io : public std::moneypunct<char,false>
+{
+public:
+  explicit My_money_io(size_t r = 0): std::moneypunct<char,false>(r) { }
+  char_type do_decimal_point() const { return '.'; }
+  char_type do_thousands_sep() 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
+  {
+    static pattern pat = { { symbol, none, sign, value } };
+    return pat;
+  }
+
+  pattern do_neg_format() const
+  {
+    static pattern pat = { { symbol, none, sign, value } };
+    return pat;
+  }
+};
+
+// libstdc++/5579
+void test05()
+{
+  using namespace std;
+  typedef istreambuf_iterator<char> InIt;
+
+  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" );
+}
+
 int main()
 {
   test01();
   test02();
   test03();
   test04();
+  test05();
   return 0;
 }

libstdc++-v3/testsuite/22_locale/money_get_members_wchar_t.cc

@@ -310,8 +310,81 @@ void test04()
     }
 #endif
 }
-#endif
 
+class My_money_io : public std::moneypunct<wchar_t,false>
+{
+public:
+  explicit My_money_io(size_t r = 0): std::moneypunct<wchar_t,false>(r) { }
+  char_type do_decimal_point() const { return L'.'; }
+  char_type do_thousands_sep() const { return L','; }
+  std::string do_grouping() const { return "\004"; }
+  
+  std::wstring do_curr_symbol() const { return L"$"; }
+  std::wstring do_positive_sign() const { return L""; }
+  std::wstring do_negative_sign() const { return L"-"; }
+  
+  int do_frac_digits() const { return 2; }
+
+  pattern do_pos_format() const
+  {
+    static pattern pat = { { symbol, none, sign, value } };
+    return pat;
+  }
+
+  pattern do_neg_format() const
+  {
+    static pattern pat = { { symbol, none, sign, value } };
+    return pat;
+  }
+};
+
+// libstdc++/5579
+void test05()
+{
+  using namespace std;
+  typedef istreambuf_iterator<wchar_t> InIt;
+
+  locale loc(locale::classic(), new My_money_io);
+
+  wstring bufferp(L"$1234.56");
+  wstring buffern(L"$-1234.56");
+  wstring bufferp_ns(L"1234.56");
+  wstring buffern_ns(L"-1234.56");
+
+  bool intl = false;
+
+  InIt iendp, iendn, iendp_ns, iendn_ns;
+  ios_base::iostate err;
+  wstring valp, valn, valp_ns, valn_ns;
+
+  const money_get<wchar_t,InIt>& mg  =
+    use_facet<money_get<wchar_t, InIt> >(loc);
+
+  wistringstream fmtp(bufferp);
+  fmtp.imbue(loc);
+  InIt ibegp(fmtp);
+  mg.get(ibegp,iendp,intl,fmtp,err,valp);
+  VERIFY( valp == L"123456" );
+
+  wistringstream fmtn(buffern);
+  fmtn.imbue(loc);
+  InIt ibegn(fmtn);
+  mg.get(ibegn,iendn,intl,fmtn,err,valn);
+  VERIFY( valn == L"-123456" );
+
+  wistringstream 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 == L"123456" );
+
+  wistringstream 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 == L"-123456" );
+}
+#endif
 
 int main()
 {
@@ -320,6 +393,7 @@ int main()
   test02();
   test03();
   test04();
+  test05();
 #endif
   return 0;
 }