From f0510d2f90467de8e8f260b47d79a9baaf9bef17 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 17 Sep 2009 07:15:29 +0200
Subject: Start tracking XSD with git

---
 libxsd/xsd/cxx/zc-istream.hxx | 92 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 libxsd/xsd/cxx/zc-istream.hxx

(limited to 'libxsd/xsd/cxx/zc-istream.hxx')

diff --git a/libxsd/xsd/cxx/zc-istream.hxx b/libxsd/xsd/cxx/zc-istream.hxx
new file mode 100644
index 0000000..2f0c1ed
--- /dev/null
+++ b/libxsd/xsd/cxx/zc-istream.hxx
@@ -0,0 +1,92 @@
+// file      : xsd/cxx/zc-istream.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_CXX_ZC_ISTREAM_HXX
+#define XSD_CXX_ZC_ISTREAM_HXX
+
+#include <string>
+#include <istream>
+
+#include <xsd/cxx/ro-string.hxx>
+
+namespace xsd
+{
+  namespace cxx
+  {
+    // Input streambuffer that does not copy the underlying
+    // buffer (zero copy).
+    //
+    template <typename C>
+    class zc_streambuf: public std::basic_streambuf<C>
+    {
+    public:
+      typedef typename std::basic_streambuf<C>::int_type int_type;
+      typedef typename std::basic_streambuf<C>::traits_type traits_type;
+
+    public:
+      zc_streambuf (const ro_string<C>&);
+      zc_streambuf (const std::basic_string<C>&);
+
+    protected:
+      virtual std::streamsize
+      showmanyc ();
+
+      virtual int_type
+      underflow ();
+
+    private:
+      void
+      init ();
+
+    private:
+      zc_streambuf (const zc_streambuf&);
+
+      zc_streambuf&
+      operator= (const zc_streambuf&);
+
+    private:
+      ro_string<C> str_;
+    };
+
+
+    // Input string stream that does not copy the underlying string.
+    //
+    template <typename C>
+    class zc_istream_base
+    {
+    protected:
+      zc_istream_base (const ro_string<C>&);
+      zc_istream_base (const std::basic_string<C>&);
+
+    protected:
+      zc_streambuf<C> buf_;
+    };
+
+    template <typename C>
+    class zc_istream: protected zc_istream_base<C>,
+                      public std::basic_istream<C>
+    {
+    public:
+      zc_istream (const ro_string<C>&);
+      zc_istream (const std::basic_string<C>&);
+
+      bool
+      exhausted ()
+      {
+        return this->get () == std::basic_istream<C>::traits_type::eof ();
+      }
+
+    private:
+      zc_istream (const zc_istream&);
+
+      zc_istream&
+      operator= (const zc_istream&);
+    };
+  }
+}
+
+#include <xsd/cxx/zc-istream.txx>
+
+#endif  // XSD_CXX_ZC_ISTREAM_HXX
-- 
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