/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * 
 *************************************************************/


#ifndef BOOTSTRP_XMLPARSE_HXX
#define BOOTSTRP_XMLPARSE_HXX

#include <signal.h>
#include <expat.h>
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
#include "tools/string.hxx"
#include "tools/list.hxx"
#define ENABLE_BYTESTRING_STREAM_OPERATORS
#include "tools/stream.hxx"
#include "tools/isofallback.hxx"
#include "export.hxx"
#include "xmlutil.hxx"

#include <fstream>
#include <iostream>

class XMLParentNode;
class XMLElement;


using namespace ::rtl;
using namespace std;

#include <hash_map> /* std::hashmap*/
#include <deque>	/* std::deque*/
#include <iterator> /* std::iterator*/
#include <list>		/* std::list*/
#include <vector>	/* std::vector*/
#define XML_NODE_TYPE_FILE			0x001                      
#define XML_NODE_TYPE_ELEMENT		0x002
#define XML_NODE_TYPE_DATA			0x003
#define XML_NODE_TYPE_COMMENT		0x004
#define XML_NODE_TYPE_DEFAULT		0x005
#define MAX_LANGUAGES				99


//#define TESTDRIVER		/* use xml2gsi testclass */
//-------------------------------------------------------------------------

/** Holds data of Attributes
 */
class XMLAttribute : public String
{
private:
	String sValue;
	
public:
	/// creates an attribute
	XMLAttribute( 
		const String &rName, 	// attributes name
		const String &rValue	// attributes data 
	) 
				: String( rName ), sValue( rValue ) {}

    /// getting value of an attribue
	const String &GetValue() { return sValue; }
    
    void setValue(const String &rValue){sValue=rValue;}

	/// returns true if two attributes are equal and have the same value
	sal_Bool IsEqual( 
		const XMLAttribute &rAttribute	// the attribute which has to be equal
	)
	{ 
		return (( rAttribute == *this ) && ( rAttribute.sValue == sValue ));
	}
};

DECLARE_LIST( XMLAttributeList, XMLAttribute * )

//-------------------------------------------------------------------------

/** Virtual base to handle different kinds of XML nodes
 */
class XMLNode
{
protected:
	XMLNode() {}

public:
	virtual sal_uInt16 GetNodeType() = 0;
    virtual ~XMLNode() {}
};

//-------------------------------------------------------------------------

/** Virtual base to handle different kinds of child nodes
 */
class XMLChildNode : public XMLNode
{
private:
	XMLParentNode *pParent;

protected:
	XMLChildNode( XMLParentNode *pPar );
    XMLChildNode():pParent( NULL ){};
    XMLChildNode( const XMLChildNode& obj);
    XMLChildNode& operator=(const XMLChildNode& obj);
public:
	virtual sal_uInt16 GetNodeType() = 0;

	/// returns the parent of this node
	XMLParentNode *GetParent() { return pParent; }
	virtual ~XMLChildNode(){};
};

DECLARE_LIST( XMLChildNodeList, XMLChildNode * )

//-------------------------------------------------------------------------

/** Virtual base to handle different kinds of parent nodes
 */
class XMLData;

class XMLParentNode : public XMLChildNode
{
private:
	XMLChildNodeList *pChildList;
	static int dbgcnt;
    //int         nParentPos;
protected:
	XMLParentNode( XMLParentNode *pPar ) 
				: XMLChildNode( pPar ), pChildList( NULL ) 
              {
			  }
	XMLParentNode(): pChildList(NULL){
	}
    /// Copyconstructor
    XMLParentNode( const XMLParentNode& );
	
    XMLParentNode& operator=(const XMLParentNode& obj);
    virtual ~XMLParentNode();
    

public:
	virtual sal_uInt16 GetNodeType() = 0;

	/// returns child list of this node
	XMLChildNodeList *GetChildList() { return pChildList; }

	/// adds a new child
	void AddChild( 
		XMLChildNode *pChild  	/// the new child
	);

    void AddChild( 
		XMLChildNode *pChild , int pos 	/// the new child
	);
    
    virtual int GetPosition( ByteString id );
    int RemoveChild( XMLElement *pRefElement );
	void RemoveAndDeleteAllChilds();

	/// returns a child element which matches the given one
	XMLElement *GetChildElement(
		XMLElement *pRefElement	// the reference elelement
	);
};

//-------------------------------------------------------------------------

DECLARE_LIST( XMLStringList, XMLElement* )

/// Mapping numeric Language code <-> XML Element 
typedef std::hash_map< ByteString ,XMLElement* , hashByteString,equalByteString > LangHashMap;

/// Mapping XML Element string identifier <-> Language Map
typedef std::hash_map<ByteString , LangHashMap* , 
					  hashByteString,equalByteString>					XMLHashMap;

/// Mapping iso alpha string code <-> iso numeric code
typedef std::hash_map<ByteString, int, hashByteString,equalByteString>	HashMap;

/// Mapping XML tag names <-> have localizable strings 
typedef std::hash_map<ByteString , sal_Bool , 
					  hashByteString,equalByteString>					TagMap;

/** Holds information of a XML file, is root node of tree
 */


class XMLFile : public XMLParentNode
{
public:
	XMLFile() ;
	XMLFile( 
				const String &rFileName // the file name, empty if created from memory stream
	);
    XMLFile( const XMLFile& obj ) ;
    ~XMLFile();
	
    ByteString*	GetGroupID(std::deque<ByteString> &groupid);
	void 		Print( XMLNode *pCur = NULL, sal_uInt16 nLevel = 0 );
	virtual void SearchL10NElements( XMLParentNode *pCur, int pos = 0 );
	void		Extract( XMLFile *pCur = NULL );
	void		View();
//	void static Signal_handler(int signo);//void*,oslSignalInfo * pInfo);
	void		showType(XMLParentNode* node);

	XMLHashMap* GetStrings(){return XMLStrings;}
	sal_Bool 		Write( ByteString &rFilename );
	sal_Bool 		Write( ofstream &rStream , XMLNode *pCur = NULL );

    bool        CheckExportStatus( XMLParentNode *pCur = NULL );// , int pos = 0 );

    XMLFile&    operator=(const XMLFile& obj);
	
	virtual sal_uInt16 	GetNodeType();

	/// returns file name
	const String &GetName() { return sFileName; }
    void          SetName( const String &rFilename ) { sFileName = rFilename; }
    void          SetFullName( const String &rFullFilename ) { sFullName = rFullFilename; }
    const std::vector<ByteString> getOrder(){ return order; }
	
protected:
	// writes a string as UTF8 with dos line ends to a given stream
    void        WriteString( ofstream &rStream, const String &sString );
	
    // quotes the given text for writing to a file
	void 		QuotHTML( String &rString );

	void		InsertL10NElement( XMLElement* pElement);

	// DATA
	String 		sFileName;
    String      sFullName;

	const ByteString ID,OLDREF,XML_LANG;

	TagMap		nodes_localize;
	XMLHashMap* XMLStrings;

    std::vector <ByteString> order;
};

/// An Utility class for XML
/// See RFC 3066 / #i8252# for ISO codes
class XMLUtil{

public:
    /// Quot the XML characters and replace \n \t
    static void         QuotHTML( String &rString );

    /// UnQuot the XML characters and restore \n \t
    static void         UnQuotHTML  ( String &rString );  

    /// Return the numeric iso language code 
    //sal_uInt16		        GetLangByIsoLang( const ByteString &rIsoLang );
    
    /// Return the alpha strings representation
    ByteString	        GetIsoLangByIndex( sal_uInt16 nIndex );
    
    static XMLUtil&     Instance(); 
    ~XMLUtil();

    void         dump();

private:
    /// Mapping iso alpha string code <-> iso numeric code 
    HashMap      lMap;

    /// Mapping iso numeric code      <-> iso alpha string code 	
    ByteString	 isoArray[MAX_LANGUAGES];

    static void UnQuotData( String &rString );
    static void UnQuotTags( String &rString );

	XMLUtil();				
	XMLUtil(const XMLUtil&);	

};


//-------------------------------------------------------------------------

/** Hold information of an element node
 */
class XMLElement : public XMLParentNode
{
private:
	String sElementName;
	XMLAttributeList *pAttributes;
	ByteString 	 project,
			     filename,
			     id,
			     sOldRef,
			     resourceType,
			     languageId;
    int          nPos;
    
protected:
	void Print(XMLNode *pCur, OUStringBuffer& buffer , bool rootelement);
public:
	/// create a element node
	XMLElement(){}
    XMLElement( 
		const String &rName, 	// the element name
		XMLParentNode *Parent 	// parent node of this element
	):			XMLParentNode( Parent ), 
				sElementName( rName ), 
				pAttributes( NULL ),
				project(""), 
				filename(""), 
				id(""), 
				sOldRef(""), 
				resourceType(""), 
				languageId(""),
                nPos(0)
   				{
				}
	~XMLElement();
    XMLElement(const XMLElement&);
    
    XMLElement& operator=(const XMLElement& obj);
	/// returns node type XML_NODE_ELEMENT
	virtual sal_uInt16 GetNodeType();

	/// returns element name
	const String &GetName() { return sElementName; }

	/// returns list of attributes of this element
	XMLAttributeList *GetAttributeList() { return pAttributes; }

	/// adds a new attribute to this element, typically used by parser
	void AddAttribute( const String &rAttribute, const String &rValue );

    void ChangeLanguageTag( const String &rValue );
	// Return a ASCII String representation of this object
	OString ToOString();
	
	// Return a Unicode String representation of this object
	OUString ToOUString();
	
	bool	Equals(OUString refStr);

	/// returns a attribute
	XMLAttribute *GetAttribute(
		const String &rName	// the attribute name
	);
	void SetProject         ( ByteString prj        ){ project = prj;        }
	void SetFileName        ( ByteString fn         ){ filename = fn;        }
	void SetId              ( ByteString theId      ){ id = theId;           }
	void SetResourceType    ( ByteString rt         ){ resourceType = rt;    }
	void SetLanguageId      ( ByteString lid        ){ languageId = lid;     }
    void SetPos             ( int nPos_in           ){ nPos = nPos_in;       }
    void SetOldRef          ( ByteString sOldRef_in ){ sOldRef = sOldRef_in; }    

    virtual int        GetPos()         { return nPos;         }
    ByteString GetProject()     { return project;      } 
	ByteString GetFileName()    { return filename;     }
	ByteString GetId()          { return id;           }
	ByteString GetOldref()      { return sOldRef;      }
	ByteString GetResourceType(){ return resourceType; }
	ByteString GetLanguageId()  { return languageId;   }


};
//-------------------------------------------------------------------------


/** Holds character data
 */
class XMLData : public XMLChildNode
{
private:
	String sData;
    bool   isNewCreated;

public:
	/// create a data node
	XMLData( 
		const String &rData, 	// the initial data
		XMLParentNode *Parent	// the parent node of this data, typically a element node 
	) 
				: XMLChildNode( Parent ), sData( rData ) , isNewCreated ( false ){}	
	XMLData( 
		const String &rData, 	// the initial data
		XMLParentNode *Parent,	// the parent node of this data, typically a element node 
        bool newCreated
    ) 
				: XMLChildNode( Parent ), sData( rData ) , isNewCreated ( newCreated ){}	
    
    XMLData(const XMLData& obj);
    
    XMLData& operator=(const XMLData& obj);
	virtual sal_uInt16 GetNodeType();

	/// returns the data
	const String &GetData() { return sData; }

    bool isNew() { return isNewCreated; }
    /// adds new character data to the existing one
	void AddData( 
		const String &rData	// the new data
	); 
	
    
};

//-------------------------------------------------------------------------

/** Holds comments
 */
class XMLComment : public XMLChildNode
{
private:
	String sComment;

public:
	/// create a comment node
	XMLComment(
		const String &rComment,	// the comment
		XMLParentNode *Parent	// the parent node of this comemnt, typically a element node
	)
				: XMLChildNode( Parent ), sComment( rComment ) {}

	virtual sal_uInt16 GetNodeType();

    XMLComment( const XMLComment& obj );
    
    XMLComment& operator=(const XMLComment& obj);
	
    /// returns the comment
	const String &GetComment()  { return sComment; }
};

//-------------------------------------------------------------------------

/** Holds additional file content like those for which no handler exists
 */
class XMLDefault : public XMLChildNode
{
private:
	String sDefault;

public:
	/// create a comment node
	XMLDefault(
		const String &rDefault,	// the comment
		XMLParentNode *Parent	// the parent node of this comemnt, typically a element node
	)
				: XMLChildNode( Parent ), sDefault( rDefault ) {}

    XMLDefault(const XMLDefault& obj);

    XMLDefault& operator=(const XMLDefault& obj);
    
    /// returns node type XML_NODE_TYPE_COMMENT
	virtual sal_uInt16 GetNodeType();

	/// returns the comment
	const String &GetDefault()  { return sDefault; }
};

//-------------------------------------------------------------------------

/** struct for error information, used by class SimpleXMLParser
 */
struct XMLError {
	XML_Error eCode;	// the error code
	sal_uLong nLine;       	// error line number
	sal_uLong nColumn;		// error column number
	String sMessage;   	// readable error message
};

//-------------------------------------------------------------------------

/** validating xml parser, creates a document tree with xml nodes
 */
 

class SimpleXMLParser
{
private:
	XML_Parser aParser;
	XMLError aErrorInformation;

	XMLFile *pXMLFile;
	XMLParentNode *pCurNode;
	XMLData *pCurData;
 
	
    static void StartElementHandler( void *userData, const XML_Char *name, const XML_Char **atts );
	static void EndElementHandler( void *userData, const XML_Char *name );
	static void CharacterDataHandler( void *userData, const XML_Char *s, int len );
	static void CommentHandler( void *userData, const XML_Char *data );
	static void DefaultHandler( void *userData, const XML_Char *s, int len );
    
    
	void StartElement( const XML_Char *name, const XML_Char **atts );
	void EndElement( const XML_Char *name );
	void CharacterData( const XML_Char *s, int len );
	void Comment( const XML_Char *data );
	void Default( const XML_Char *s, int len );
	

public:
	/// creates a new parser
	SimpleXMLParser();
	~SimpleXMLParser();

	/// parse a file, returns NULL on criticall errors
	XMLFile *Execute( 
        const String &rFullFileName,
        const String &rFileName,	// the file name
        XMLFile *pXMLFileIn         // the XMLFile
	);

	/// parse a memory stream, returns NULL on criticall errors
	XMLFile *Execute( 
		SvMemoryStream *pStream	// the stream
	);

	/// returns an error struct
	const XMLError &GetError() { return aErrorInformation; }
};

#endif