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extern/stdcxx/4.2.1/examples/manual/money_get.cpp

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+/**************************************************************************
+ *
+ * money_get.cpp - Example program for the money_get facet. 
+ *
+ * $Id: money_get.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1998-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <locale>     // for locale, money_get, use_facet
+#include <sstream>    // for istringstream
+#include <iostream>   // for cout, endl
+#include <iterator>   // for istreambuf_iterator
+
+#include <examples.h>
+
+
+// hardcode the name of the English US locale for known systems
+#if defined (__FreeBSD__) || defined (__osf__)
+// FreeBSD and Tru64 UNIX
+const char en_US[] = "en_US.ISO8859-1";
+#elif defined (__hpux)
+// HP-UX
+const char en_US[] = "en_US.iso88591";
+// Windows
+#elif defined (_WIN32)
+const char en_US[] = "English";
+#else
+// AIX, IRIX, Linux, Solaris
+const char en_US[] = "en_US";
+#endif
+
+
+int main (int argc, char *argv[])
+{
+    // Get the monetary string and locale from the argument vector.
+    const char* const buffer  = 1 < argc ? argv [1] : "$1,234.6789";
+    const char* const locname = 2 < argc ? argv [2] : en_US;
+    const bool        intl    = 3 < argc;
+
+    std::string smon;
+    long double fmon = 0.0;
+
+    std::ios_base::iostate state = std::ios_base::goodbit;
+
+    // Retrieve the money_get facet from the named locale.
+    const std::locale loc (locname);
+
+    typedef std::istreambuf_iterator<char> Iter;
+    typedef std::money_get<char, Iter>     MoneyGet;
+
+    const MoneyGet &mgf = std::use_facet<MoneyGet>(loc);
+
+    {
+        // Build an istringstream object from the buffer
+        // and imbue the locale in it.
+        std::istringstream ins (buffer);
+        ins.imbue (loc);
+
+        // Get a string representation of the monetary value.
+        mgf.get (ins, Iter (), intl, ins, state, smon);
+    }
+    {
+        std::istringstream ins (buffer);
+        ins.imbue (loc);
+
+        // Get a floating point representation of the monetary value.
+        mgf.get (ins, Iter (), intl, ins, state, fmon);
+    }
+
+    // Output the original sequence and its string and floating point
+    // representations.
+    std::cout << buffer << " --> \"" << smon << "\" --> " << fmon << '\n';
+
+    // Return 0 on success, non-zero on failure.
+    return !(std::ios_base::eofbit == state);
+}