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

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+/***************************************************************************
+ *
+ * strstream.cpp - strstream example.
+ *
+ * $Id: strstream.cpp 587911 2007-10-24 15:46:48Z faridz $
+ *
+ ***************************************************************************
+ *
+ * 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 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <iostream>    // for cout, ends
+#include <strstream>   // for sstream
+
+#include <examples.h>
+
+
+int main ()
+{
+    // create a bi-directional strstream object 
+    std::strstream inout;
+
+    // write three complete lines of text to the stream
+    inout << "  Dieses ist die Geschichte eines Mannes.\n"
+          << "  C'est l'histoire d'un homme.\n"
+          << "  This is the story of a man.\n"
+          << std::ends;
+
+    char line [80];
+
+    // output the entire contents of the stream object to stdout
+    std::cout << "Full text, " << inout.pcount ()
+              << " characters:\n" << inout.str ();
+
+    // unfreeze the streambuf so it cleans up its allocated memory 
+    inout.freeze (false);
+
+    // keep track of the number of characters extracted by getline
+    int gcount = 0;
+
+    // extract lines from the stream, one at a time
+    for (int i = 1; inout.getline (line, sizeof line); ++i) {
+
+        // increment the number of extracted characters
+        gcount += inout.gcount ();
+
+        // write out the line number and its length
+        std::cout << "\nLine " << i << ", " << inout.gcount ();
+
+        if ('\0' == *line) {
+            // incomplete line (missing newline character)
+            std::cout << " character (no newline):\n"
+                      << "  '\\0'\n";
+        }
+        else {
+            // output the line to stdout
+            std::cout << " characters:\n" << line;
+        }
+    }
+
+    // write out the total number of extracted characters
+    std::cout << "\nExtracted " << gcount << " characters.\n";
+ 
+    return 0;
+}