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/*
* Copyright (c) 2000 - 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*
*
* @file parser.h
* @author Maciej Karpiuk (m.karpiuk2@samsung.com)
* @version 1.0
* @brief XML parser class.
*/
#ifndef XML_PARSER_H_
#define XML_PARSER_H_
#include <map>
#include <vector>
#include <string>
#include <stack>
#include <functional>
#include <memory>
#include <libxml/parser.h>
#include <libxml/tree.h>
namespace CKM {
namespace XML {
class Parser {
public:
enum ErrorCode {
PARSE_SUCCESS = 0,
ERROR_UNKNOWN = -1000,
ERROR_XML_VALIDATION_FAILED = -1001,
ERROR_XSD_PARSE_FAILED = -1002,
ERROR_XML_PARSE_FAILED = -1003,
ERROR_INVALID_ARGUMENT = -1004,
ERROR_CALLBACK_PRESENT = -1005,
ERROR_INVALID_VERSION = -1006,
ERROR_INTERNAL = -1007,
ERROR_NO_MEMORY = -1008
};
explicit Parser(const std::string &XML_filename);
virtual ~Parser();
int Validate(const std::string &XSD_schema);
int Parse();
enum ErrorType {
VALIDATION_ERROR,
PARSE_ERROR,
PARSE_WARNING
};
typedef std::function<void (const ErrorType, const std::string &)> ErrorCb;
int RegisterErrorCb(const ErrorCb newCb);
typedef std::map<std::string, std::string> Attributes;
class ElementHandler {
public:
virtual ~ElementHandler() {}
// methods below may throw std::exception to invalidate the parsing process
// and remove all element listeners.
// In this case, parsing error code returned to the user after std::exception.
virtual void Start(const Attributes &) = 0;
virtual void Characters(const std::string &data) = 0;
virtual void End() = 0;
};
typedef std::shared_ptr<ElementHandler> ElementHandlerPtr;
typedef std::function<ElementHandlerPtr()> StartCb;
typedef std::function<void (const ElementHandlerPtr &)> EndCb;
int RegisterElementCb(const char *elementName,
const StartCb startCb,
const EndCb endCb);
protected:
void StartElement(const xmlChar *name,
const xmlChar **attrs);
void EndElement(const xmlChar *name);
void Characters(const xmlChar *ch, size_t chLen);
void Error(const ErrorType errorType, const char *msg, va_list &);
private:
static void StartElement(void *userData,
const xmlChar *name,
const xmlChar **attrs);
static void EndElement(void *userData,
const xmlChar *name);
static void Characters(void *userData,
const xmlChar *ch,
int len);
static void ErrorValidate(void *userData,
const char *msg,
...);
static void Error(void *userData,
const char *msg,
...);
static void Warning(void *userData,
const char *msg,
...);
private:
xmlSAXHandler m_saxHandler;
std::string m_XMLfile;
ErrorCb m_errorCb;
struct ElementListener {
StartCb startCb;
EndCb endCb;
};
std::map<std::string, ElementListener> m_elementListenerMap;
std::stack<ElementHandlerPtr> m_elementHandlerStack;
void CallbackHelper(std::function<void(void)> func);
};
}
}
#endif /* XML_PARSER_H_ */
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