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writeengine/xml/we_xmlop.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program 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; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/*******************************************************************************
+* $Id: we_xmlop.h 4450 2013-01-21 14:13:24Z rdempsey $
+*
+*******************************************************************************/
+/** @file */
+
+#ifndef _WE_XMLOP_H_
+#define _WE_XMLOP_H_
+
+#include "we_xmltag.h"
+#include "we_type.h"
+
+/** Namespace WriteEngine */
+namespace WriteEngine
+{
+   // Size of buffer used to parse non-string node content or attribute
+   const int XML_NODE_BUF_SIZE = 256;
+
+/** @brief Class wrapper around XML2  API.  Used by XmlGenProc to save Job XML
+ *  file for input into cpimport.bin.
+ *
+ */
+class XMLOp
+{
+protected:
+    /** @brief XML types used in parsing XML content and attributes
+     *
+     */
+    enum XML_DTYPE
+    {
+        TYPE_EMPTY    = 1,
+        TYPE_CHAR     = 2,
+        TYPE_DOUBLE   = 3,
+        TYPE_FLOAT    = 4,
+        TYPE_LONGLONG = 5,
+        TYPE_INT      = 6
+    };
+
+    /**
+     * @brief Constructor
+     */
+    XMLOp();
+
+    /**
+     * @brief Default Destructor
+     */
+    virtual ~XMLOp();
+
+    /**
+     * @brief Get node attribute for non-strings
+     */
+    bool getNodeAttribute( xmlNode* pNode, const char* pTag,
+                           void* pVal, XML_DTYPE dataType ) const;
+
+    /**
+     * @brief Get node attribute for strings
+     */
+    bool getNodeAttributeStr( xmlNode* pNode, const char* pTag,
+                           std::string& strVal ) const;
+
+    /**
+     * @brief Get node content for non-strings
+     */
+    bool getNodeContent( const xmlNode* pNode, void* pVal,
+                         XML_DTYPE dataType );
+
+    /**
+     * @brief Get node content for strings
+     */
+    bool getNodeContentStr( const xmlNode* pNode, std::string& strVal);
+
+    /**
+     * @brief Check whether it is certain tag
+     */
+    bool isTag( const xmlNode* pNode, const xmlTag tag )
+    { return !xmlStrcmp( pNode->name, (const xmlChar *)xmlTagTable[tag] ); }
+
+    /**
+     * @brief Parse xml document
+     */
+    int  parseDoc( const char* xmlFileName );
+
+    /**
+     * @brief Process node (recursion)
+     */
+    virtual bool processNode( xmlNode* pParentNode );
+
+    xmlDocPtr      m_fDoc;                    // xml document pointer
+    xmlNode*       m_pRoot;                   // root element
+
+private:
+    void           closeDoc();
+    void           convertNodeValue( void* pVal, const char* buf,
+                                     XML_DTYPE dataType ) const;
+    int            readDoc( const char* xmlFileName );
+};
+
+
+} //end of namespace
+#endif // _WE_XMLOP_H_