Schema.h

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//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
 
#ifndef RL_XML_SCHEMA_H
#define RL_XML_SCHEMA_H
 
#include <memory>
#include <string>
#include <boost/shared_array.hpp>
#include <libxml/xmlschemas.h>
 
#include "Document.h"
 
namespace rl
{
    namespace xml
    {
        class Schema
        {
        public:
            explicit Schema(const ::std::string& url) :
                parser(::xmlSchemaNewParserCtxt(url.c_str()), ::xmlSchemaFreeParserCtxt),
                schema(::xmlSchemaParse(parser.get()), ::xmlSchemaFree),
                valid(::xmlSchemaNewValidCtxt(schema.get()), ::xmlSchemaFreeValidCtxt)
            {
            }
            
            ~Schema()
            {
            }
            
            ::xmlSchemaPtr get() const
            {
                return this->schema.get();
            }
            
            ::xmlSchema& operator*() const
            {
                return *this->schema;
            }
            
            bool validate(const Document& doc)
            {
                return 0 == ::xmlSchemaValidateDoc(this->valid.get(), doc.get()) ? true : false;
            }
            
        protected:
            
        private:
            ::std::shared_ptr< ::xmlSchemaParserCtxt> parser;
            
            ::std::shared_ptr< ::xmlSchema> schema;
            
            ::std::shared_ptr< ::xmlSchemaValidCtxt> valid;
        };
    }
}
 
#endif // RL_XML_SCHEMA_H