initial commit

src/Column.cc

@@ -0,0 +1,57 @@
+// +------------------------------------------------------------------+
+// |             ____ _               _        __  __ _  __           |
+// |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
+// |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
+// |           | |___| | | |  __/ (__|   <    | |  | | . \            |
+// |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
+// |                                                                  |
+// | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
+// +------------------------------------------------------------------+
+//
+// This file is part of Check_MK.
+// The official homepage is at http://mathias-kettner.de/check_mk.
+//
+// check_mk is free software;  you can redistribute it and/or modify it
+// under the  terms of the  GNU General Public License  as published by
+// the Free Software Foundation in version 2.  check_mk is  distributed
+// in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
+// out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
+// PARTICULAR PURPOSE. See the  GNU General Public License for more de-
+// tails. You should have  received  a copy of the  GNU  General Public
+// License along with GNU Make; see the file  COPYING.  If  not,  write
+// to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
+// Boston, MA 02110-1301 USA.
+
+#include "Column.h"
+#include <utility>
+#include "Logger.h"
+
+Column::Column(std::string name, std::string description, int indirect_offset,
+               int extra_offset, int extra_extra_offset, int offset)
+    : _logger(Logger::getLogger("cmk.livestatus"))
+    , _name(std::move(name))
+    , _description(std::move(description))
+    , _indirect_offset(indirect_offset)
+    , _extra_offset(extra_offset)
+    , _extra_extra_offset(extra_extra_offset)
+    , _offset(offset) {}
+
+namespace {
+const void *add(const void *data, int offset) {
+    return (data == nullptr || offset < 0) ? data
+                                           : offset_cast<void>(data, offset);
+}
+
+const void *shift(const void *data, int offset) {
+    return (data == nullptr || offset < 0)
+               ? data
+               : *offset_cast<const void *>(data, offset);
+}
+}  // namespace
+
+const void *Column::shiftPointer(Row row) const {
+    return add(shift(shift(shift(row.rawData<const void>(), _indirect_offset),
+                           _extra_offset),
+                     _extra_extra_offset),
+               _offset);
+}