Add roundtrip example, root makefile

1 files changed, 104 insertions, 0 deletions

diff --git a/examples/roundtrip/driver.cxx b/examples/roundtrip/driver.cxx
new file mode 100644
index 0000000..5270147
--- /dev/null
+++ b/examples/roundtrip/driver.cxx
@@ -0,0 +1,104 @@
+// file      : examples/roundtrip/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <string>
+#include <fstream>
+#include <iostream>
+
+#include <xml/parser.hxx>
+#include <xml/serializer.hxx>
+
+using namespace std;
+using namespace xml;
+
+int
+main (int argc, char* argv[])
+{
+  if (argc != 2)
+  {
+    cerr << "usage: " << argv[0] << " <xml-file>" << endl;
+    return 1;
+  }
+
+  try
+  {
+    ifstream ifs;
+    ifs.exceptions (ifstream::badbit | ifstream::failbit);
+    ifs.open (argv[1], ifstream::in | ifstream::binary);
+
+    // Configure the parser to receive attributes as events as well
+    // as to receive prefix-namespace mappings (namespace declarations
+    // in XML terminology).
+    //
+    parser p (ifs,
+              argv[1],
+              parser::receive_default |
+              parser::receive_attributes_event |
+              parser::receive_namespace_decls);
+
+    // Configure serializer not to perform indentation. Existing
+    // indentation, if any, will be preserved.
+    //
+    serializer s (cout, "out", 0);
+
+    for (parser::event_type e (p.next ()); e != parser::eof; e = p.next ())
+    {
+      switch (e)
+      {
+      case parser::start_element:
+        {
+          s.start_element (p.qname ());
+          break;
+        }
+      case parser::end_element:
+        {
+          s.end_element ();
+          break;
+        }
+      case parser::start_namespace_decl:
+        {
+          s.namespace_decl (p.namespace_ (), p.prefix ());
+          break;
+        }
+      case parser::end_namespace_decl:
+        {
+          // There is nothing in XML that indicates the end of namespace
+          // declaration since it is scope-based.
+          //
+          break;
+        }
+      case parser::start_attribute:
+        {
+          s.start_attribute (p.qname ());
+          break;
+        }
+      case parser::end_attribute:
+        {
+          s.end_attribute ();
+          break;
+        }
+      case parser::characters:
+        {
+          s.characters (p.value ());
+          break;
+        }
+      case parser::eof:
+        {
+          // Handled in the for loop.
+          //
+          break;
+        }
+      }
+    }
+  }
+  catch (const ios_base::failure& e)
+  {
+    cerr << "io failure" << endl;
+    return 1;
+  }
+  catch (const xml::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}