BIND 10 trac2096, updated. 11cfdc151d5d949cf8c6fd5b05f888225b6a9d9d [2096] Interface of the RDataReader

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- Log -----------------------------------------------------------------
commit 11cfdc151d5d949cf8c6fd5b05f888225b6a9d9d
Author: Michal 'vorner' Vaner <michal.vaner at nic.cz>
Date:   Mon Aug 6 15:23:06 2012 +0200

    [2096] Interface of the RDataReader
    
    The oposite of the isc::datasrc::memory::RDataEncoder.
    
    Only the methods are drafted, no documentation yet and no member
    variables listed.

-----------------------------------------------------------------------

Summary of changes:
 src/lib/datasrc/memory/Makefile.am                 |    1 +
 .../datasrc/memory/rdata_reader.cc}                |    4 +-
 src/lib/datasrc/memory/rdata_reader.h              |   73 ++++++++++++++++++++
 3 files changed, 75 insertions(+), 3 deletions(-)
 copy src/{bin/resolver/common.cc => lib/datasrc/memory/rdata_reader.cc} (91%)
 create mode 100644 src/lib/datasrc/memory/rdata_reader.h

-----------------------------------------------------------------------
diff --git a/src/lib/datasrc/memory/Makefile.am b/src/lib/datasrc/memory/Makefile.am
index 90ab7b8..4d34c77 100644
--- a/src/lib/datasrc/memory/Makefile.am
+++ b/src/lib/datasrc/memory/Makefile.am
@@ -13,4 +13,5 @@ noinst_LTLIBRARIES = libdatasrc_memory.la
 libdatasrc_memory_la_SOURCES = \
 	rdata_encoder.h \
 	rdata_encoder.cc \
+	rdata_reader.h rdata_reader.cc \
 	domaintree.h
diff --git a/src/lib/datasrc/memory/rdata_reader.cc b/src/lib/datasrc/memory/rdata_reader.cc
new file mode 100644
index 0000000..2edc7e6
--- /dev/null
+++ b/src/lib/datasrc/memory/rdata_reader.cc
@@ -0,0 +1,15 @@
+// Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+//
+// 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 ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC 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.
+
+#include "rdata_reader.h"
diff --git a/src/lib/datasrc/memory/rdata_reader.h b/src/lib/datasrc/memory/rdata_reader.h
new file mode 100644
index 0000000..7d0325f
--- /dev/null
+++ b/src/lib/datasrc/memory/rdata_reader.h
@@ -0,0 +1,73 @@
+// Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+//
+// 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 ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC 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 DATASRC_MEMORY_RDATA_READER_H
+#define DATASRC_MEMORY_RDATA_READER_H 1
+
+#include <boost/function.hpp>
+
+namespace isc {
+namespace dns{
+class LabelSequence;
+class RRClass;
+class RRType;
+}
+namespace datasrc {
+namespace memory {
+
+class RDataReader {
+public:
+    // The sequence and attributes
+    typedef boost::function<void(const dns::LabelSequence&, unsigned int)>
+        NameAction;
+    typedef boost::function<void(const uint8_t*, size_t)> DataAction;
+
+    // For the default parameters.
+    static void emptyNameAction(const dns::LabelSequence& label,
+                                unsigned int attributes);
+    static void emptyDataAction(const uint8_t* data, size_t size);
+
+    RDataReader(const dns::RRClass& rrclass, const dns::RRType& rrtype,
+                size_t size, const uint8_t* data,
+                const NameAction& name_action = &emptyNameAction,
+                const DataAction& data_action = &emptyDataAction);
+
+    enum Action {
+        NAME,
+        DATA,
+        END
+    };
+
+    class Result {
+    public:
+        Action action() const;
+        const uint8_t* data() const;
+        size_t size() const;
+        const dns::LabelSequence& sequence;
+        operator bool() const {
+            return (action() != END);
+        }
+    };
+
+    Result next();
+    void rewind();
+
+    size_t getSize() const;
+};
+
+}
+}
+}
+
+#endif