1 files changed, 160 insertions, 0 deletions
diff --git a/src/boost/libs/iostreams/example/container_device.hpp b/src/boost/libs/iostreams/example/container_device.hpp
new file mode 100644
index 000000000..cb9d537f2
--- /dev/null
+++ b/src/boost/libs/iostreams/example/container_device.hpp
@@ -0,0 +1,160 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2005-2007 Jonathan Turkanis
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+#ifndef BOOST_IOSTREAMS_EXAMPLE_CONTAINTER_DEVICE_HPP_INCLUDED
+#define BOOST_IOSTREAMS_EXAMPLE_CONTAINTER_DEVICE_HPP_INCLUDED
+
+#include <algorithm>         // copy, min.
+#include <cassert>
+#include <boost/config.hpp>  // BOOST_NO_STDC_NAMESPACE.
+#include <boost/iostreams/categories.hpp>
+#include <boost/iostreams/detail/ios.hpp>  // failure.
+
+// Must come last.
+#include <boost/iostreams/detail/config/disable_warnings.hpp>
+
+namespace boost { namespace iostreams { namespace example {
+
+//
+// Model of Source which reads from an STL-compatible sequence
+// whose iterators are random-access iterators.
+//
+template<typename Container>
+class container_source {
+public:
+    typedef typename Container::value_type  char_type;
+    typedef source_tag                      category;
+    container_source(Container& container)
+        : container_(container), pos_(0)
+        { }
+    std::streamsize read(char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        std::streamsize amt = 
+            static_cast<std::streamsize>(container_.size() - pos_);
+        std::streamsize result = (min)(n, amt);
+        if (result != 0) {
+            std::copy( container_.begin() + pos_,
+                       container_.begin() + pos_ + result,
+                       s );
+            pos_ += result;
+            return result;
+        } else {
+            return -1; // EOF
+        }
+    }
+    Container& container() { return container_; }
+private:
+    container_source operator=(const container_source&);
+    typedef typename Container::size_type   size_type;
+    Container&  container_;
+    size_type   pos_;
+};
+
+//
+// Model of Sink which appends to an STL-compatible sequence.
+//
+template<typename Container>
+class container_sink {
+public:
+    typedef typename Container::value_type  char_type;
+    typedef sink_tag                        category;
+    container_sink(Container& container) : container_(container) { }
+    std::streamsize write(const char_type* s, std::streamsize n)
+    {
+        container_.insert(container_.end(), s, s + n);
+        return n;
+    }
+    Container& container() { return container_; }
+private:
+    container_sink operator=(const container_sink&);
+    Container& container_;
+};
+
+//
+// Model of SeekableDevice which accessS an TL-compatible sequence
+// whose iterators are random-access iterators.
+//
+template<typename Container>
+class container_device {
+public:
+    typedef typename Container::value_type  char_type;
+    typedef seekable_device_tag             category;
+    container_device(Container& container)
+        : container_(container), pos_(0)
+        { }
+
+    std::streamsize read(char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        std::streamsize amt = 
+            static_cast<std::streamsize>(container_.size() - pos_);
+        std::streamsize result = (min)(n, amt);
+        if (result != 0) {
+            std::copy( container_.begin() + pos_,
+                       container_.begin() + pos_ + result,
+                       s );
+            pos_ += result;
+            return result;
+        } else {
+            return -1; // EOF
+        }
+    }
+    std::streamsize write(const char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        std::streamsize result = 0;
+        if (pos_ != container_.size()) {
+            std::streamsize amt =
+                static_cast<std::streamsize>(container_.size() - pos_);
+            result = (min)(n, amt);
+            std::copy(s, s + result, container_.begin() + pos_);
+            pos_ += result;
+        }
+        if (result < n) {
+            container_.insert(container_.end(), s, s + n);
+            pos_ = container_.size();
+        }
+        return n;
+    }
+    stream_offset seek(stream_offset off, BOOST_IOS::seekdir way)
+    {
+        using namespace std;
+
+        // Determine new value of pos_
+        stream_offset next;
+        if (way == BOOST_IOS::beg) {
+            next = off;
+        } else if (way == BOOST_IOS::cur) {
+            next = pos_ + off;
+        } else if (way == BOOST_IOS::end) {
+            next = container_.size() + off - 1;
+        } else {
+            throw BOOST_IOSTREAMS_FAILURE("bad seek direction");
+        }
+
+        // Check for errors
+        if (next < 0 || next > static_cast<stream_offset>(container_.size()))
+            throw BOOST_IOSTREAMS_FAILURE("bad seek offset");
+
+        pos_ = next;
+        return pos_;
+    }
+
+    Container& container() { return container_; }
+private:
+    container_device operator=(const container_device&);
+    typedef typename Container::size_type   size_type;
+    Container&  container_;
+    size_type   pos_;
+};
+
+} } } // End namespaces example, iostreams, boost.
+
+#include <boost/iostreams/detail/config/enable_warnings.hpp>
+
+#endif // #ifndef BOOST_IOSTREAMS_EXAMPLE_CONTAINTER_DEVICE_HPP_INCLUDED