From 7bc26c5ea03cfd3eab2e9b2ecfbe8652d7ea616c Mon Sep 17 00:00:00 2001
From: Vinnie Falco <vinnie.falco@gmail.com>
Date: Sun, 9 Nov 2014 17:05:06 -0800
Subject: [PATCH] Add WrappedSink

---
 beast/utility/WrappedSink.h | 89 +++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 beast/utility/WrappedSink.h

diff --git a/beast/utility/WrappedSink.h b/beast/utility/WrappedSink.h
new file mode 100644
index 000000000..3bd8d273f
--- /dev/null
+++ b/beast/utility/WrappedSink.h
@@ -0,0 +1,89 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_UTILITY_WRAPPED_SINK_H_INCLUDED
+#define BEAST_UTILITY_WRAPPED_SINK_H_INCLUDED
+
+#include <beast/utility/Journal.h>
+
+namespace beast {
+
+/** Wraps a Journal::Sink to prefix its output with a string. */
+class WrappedSink : public beast::Journal::Sink
+{
+private:
+    std::string prefix_;
+    beast::Journal::Sink& sink_;
+
+public:
+    explicit
+    WrappedSink (beast::Journal::Sink& sink)
+        : sink_ (sink)
+    {
+    }
+
+    explicit
+    WrappedSink (beast::Journal const& journal)
+        : sink_ (journal.sink())
+    {
+    }
+
+    void prefix (std::string const& s)
+    {
+        prefix_ = s;
+    }
+
+    bool
+    active (beast::Journal::Severity level) const override
+    {
+        return sink_.active (level);
+    }
+
+    bool
+    console () const override
+    {
+        return sink_.console ();
+    }
+
+    void console (bool output) override
+    {
+        sink_.console (output);
+    }
+
+    beast::Journal::Severity
+    severity() const
+    {
+        return sink_.severity();
+    }
+
+    void severity (beast::Journal::Severity level)
+    {
+        sink_.severity (level);
+    }
+
+    void write (beast::Journal::Severity level, std::string const& text)
+    {
+        using beast::Journal;
+        sink_.write (level, prefix_ + text);
+    }
+};
+
+}
+
+#endif