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tinyxml.cpp

/*
www.sourceforge.net/projects/tinyxml
Original code (2.0 and earlier )copyright (c) 2000-2002 Lee Thomason (www.grinninglizard.com)

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.

Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must
not claim that you wrote the original software. If you use this
software in a product, an acknowledgment in the product documentation
would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source
distribution.
*/

#include <ctype.h>
#include "tinyxml.h"

#ifdef TIXML_USE_STL
#include <sstream>
#endif


bool TiXmlBase::condenseWhiteSpace = true;

void TiXmlBase::PutString( const TIXML_STRING& str, TIXML_OSTREAM* stream )
{
      TIXML_STRING buffer;
      PutString( str, &buffer );
      (*stream) << buffer;
}

void TiXmlBase::PutString( const TIXML_STRING& str, TIXML_STRING* outString )
{
      int i=0;

      while( i<(int)str.length() )
      {
            unsigned char c = (unsigned char) str[i];

            if (    c == '&' 
                 && i < ( (int)str.length() - 2 )
                   && str[i+1] == '#'
                   && str[i+2] == 'x' )
            {
                  // Hexadecimal character reference.
                  // Pass through unchanged.
                  // &#xA9;   -- copyright symbol, for example.
                  //
                  // The -1 is a bug fix from Rob Laveaux. It keeps
                  // an overflow from happening if there is no ';'.
                  // There are actually 2 ways to exit this loop -
                  // while fails (error case) and break (semicolon found).
                  // However, there is no mechanism (currently) for
                  // this function to return an error.
                  while ( i<(int)str.length()-1 )
                  {
                        outString->append( str.c_str() + i, 1 );
                        ++i;
                        if ( str[i] == ';' )
                              break;
                  }
            }
            else if ( c == '&' )
            {
                  outString->append( entity[0].str, entity[0].strLength );
                  ++i;
            }
            else if ( c == '<' )
            {
                  outString->append( entity[1].str, entity[1].strLength );
                  ++i;
            }
            else if ( c == '>' )
            {
                  outString->append( entity[2].str, entity[2].strLength );
                  ++i;
            }
            else if ( c == '\"' )
            {
                  outString->append( entity[3].str, entity[3].strLength );
                  ++i;
            }
            else if ( c == '\'' )
            {
                  outString->append( entity[4].str, entity[4].strLength );
                  ++i;
            }
            else if ( c < 32 )
            {
                  // Easy pass at non-alpha/numeric/symbol
                  // Below 32 is symbolic.
                  char buf[ 32 ];
                  sprintf( buf, "&#x%02X;", (unsigned) ( c & 0xff ) );
                  outString->append( buf, strlen( buf ) );
                  ++i;
            }
            else
            {
                  //char realc = (char) c;
                  //outString->append( &realc, 1 );
                  *outString += (char) c; // somewhat more efficient function call.
                  ++i;
            }
      }
}


// <-- Strange class for a bug fix. Search for STL_STRING_BUG
TiXmlBase::StringToBuffer::StringToBuffer( const TIXML_STRING& str )
{
      buffer = new char[ str.length()+1 ];
      if ( buffer )
      {
            strcpy( buffer, str.c_str() );
      }
}


TiXmlBase::StringToBuffer::~StringToBuffer()
{
      delete [] buffer;
}
// End strange bug fix. -->


TiXmlNode::TiXmlNode( NodeType _type ) : TiXmlBase()
{
      parent = 0;
      type = _type;
      firstChild = 0;
      lastChild = 0;
      prev = 0;
      next = 0;
}


TiXmlNode::~TiXmlNode()
{
      TiXmlNode* node = firstChild;
      TiXmlNode* temp = 0;

      while ( node )
      {
            temp = node;
            node = node->next;
            delete temp;
      }     
}


void TiXmlNode::CopyTo( TiXmlNode* target ) const
{
      target->SetValue (value.c_str() );
      target->userData = userData; 
}


00168 void TiXmlNode::Clear()
{
      TiXmlNode* node = firstChild;
      TiXmlNode* temp = 0;

      while ( node )
      {
            temp = node;
            node = node->next;
            delete temp;
      }     

      firstChild = 0;
      lastChild = 0;
}


00185 TiXmlNode* TiXmlNode::LinkEndChild( TiXmlNode* node )
{
      node->parent = this;

      node->prev = lastChild;
      node->next = 0;

      if ( lastChild )
            lastChild->next = node;
      else
            firstChild = node;                  // it was an empty list.

      lastChild = node;
      return node;
}


00202 TiXmlNode* TiXmlNode::InsertEndChild( const TiXmlNode& addThis )
{
      TiXmlNode* node = addThis.Clone();
      if ( !node )
            return 0;

      return LinkEndChild( node );
}


00212 TiXmlNode* TiXmlNode::InsertBeforeChild( TiXmlNode* beforeThis, const TiXmlNode& addThis )
{     
      if ( !beforeThis || beforeThis->parent != this )
            return 0;

      TiXmlNode* node = addThis.Clone();
      if ( !node )
            return 0;
      node->parent = this;

      node->next = beforeThis;
      node->prev = beforeThis->prev;
      if ( beforeThis->prev )
      {
            beforeThis->prev->next = node;
      }
      else
      {
            assert( firstChild == beforeThis );
            firstChild = node;
      }
      beforeThis->prev = node;
      return node;
}


00238 TiXmlNode* TiXmlNode::InsertAfterChild( TiXmlNode* afterThis, const TiXmlNode& addThis )
{
      if ( !afterThis || afterThis->parent != this )
            return 0;

      TiXmlNode* node = addThis.Clone();
      if ( !node )
            return 0;
      node->parent = this;

      node->prev = afterThis;
      node->next = afterThis->next;
      if ( afterThis->next )
      {
            afterThis->next->prev = node;
      }
      else
      {
            assert( lastChild == afterThis );
            lastChild = node;
      }
      afterThis->next = node;
      return node;
}


00264 TiXmlNode* TiXmlNode::ReplaceChild( TiXmlNode* replaceThis, const TiXmlNode& withThis )
{
      if ( replaceThis->parent != this )
            return 0;

      TiXmlNode* node = withThis.Clone();
      if ( !node )
            return 0;

      node->next = replaceThis->next;
      node->prev = replaceThis->prev;

      if ( replaceThis->next )
            replaceThis->next->prev = node;
      else
            lastChild = node;

      if ( replaceThis->prev )
            replaceThis->prev->next = node;
      else
            firstChild = node;

      delete replaceThis;
      node->parent = this;
      return node;
}


00292 bool TiXmlNode::RemoveChild( TiXmlNode* removeThis )
{
      if ( removeThis->parent != this )
      {     
            assert( 0 );
            return false;
      }

      if ( removeThis->next )
            removeThis->next->prev = removeThis->prev;
      else
            lastChild = removeThis->prev;

      if ( removeThis->prev )
            removeThis->prev->next = removeThis->next;
      else
            firstChild = removeThis->next;

      delete removeThis;
      return true;
}

00314 TiXmlNode* TiXmlNode::FirstChild( const char * _value ) const
{
      TiXmlNode* node;
      for ( node = firstChild; node; node = node->next )
      {
            if ( node->SValue() == TIXML_STRING( _value ))
                  return node;
      }
      return 0;
}

00325 TiXmlNode* TiXmlNode::LastChild( const char * _value ) const
{
      TiXmlNode* node;
      for ( node = lastChild; node; node = node->prev )
      {
            if ( node->SValue() == TIXML_STRING (_value))
                  return node;
      }
      return 0;
}

00336 TiXmlNode* TiXmlNode::IterateChildren( TiXmlNode* previous ) const
{
      if ( !previous )
      {
            return FirstChild();
      }
      else
      {
            assert( previous->parent == this );
            return previous->NextSibling();
      }
}

00349 TiXmlNode* TiXmlNode::IterateChildren( const char * val, TiXmlNode* previous ) const
{
      if ( !previous )
      {
            return FirstChild( val );
      }
      else
      {
            assert( previous->parent == this );
            return previous->NextSibling( val );
      }
}

00362 TiXmlNode* TiXmlNode::NextSibling( const char * _value ) const
{
      TiXmlNode* node;
      for ( node = next; node; node = node->next )
      {
            if ( node->SValue() == TIXML_STRING (_value))
                  return node;
      }
      return 0;
}


00374 TiXmlNode* TiXmlNode::PreviousSibling( const char * _value ) const
{
      TiXmlNode* node;
      for ( node = prev; node; node = node->prev )
      {
            if ( node->SValue() == TIXML_STRING (_value))
                  return node;
      }
      return 0;
}

00385 void TiXmlElement::RemoveAttribute( const char * name )
{
      TiXmlAttribute* node = attributeSet.Find( name );
      if ( node )
      {
            attributeSet.Remove( node );
            delete node;
      }
}

00395 TiXmlElement* TiXmlNode::FirstChildElement() const
{
      TiXmlNode* node;

      for ( node = FirstChild();
                  node;
                  node = node->NextSibling() )
      {
            if ( node->ToElement() )
                  return node->ToElement();
      }
      return 0;
}

00409 TiXmlElement* TiXmlNode::FirstChildElement( const char * _value ) const
{
      TiXmlNode* node;

      for ( node = FirstChild( _value );
                  node;
                  node = node->NextSibling( _value ) )
      {
            if ( node->ToElement() )
                  return node->ToElement();
      }
      return 0;
}


00424 TiXmlElement* TiXmlNode::NextSiblingElement() const
{
      TiXmlNode* node;

      for ( node = NextSibling();
      node;
      node = node->NextSibling() )
      {
            if ( node->ToElement() )
                  return node->ToElement();
      }
      return 0;
}

00438 TiXmlElement* TiXmlNode::NextSiblingElement( const char * _value ) const
{
      TiXmlNode* node;

      for ( node = NextSibling( _value );
      node;
      node = node->NextSibling( _value ) )
      {
            if ( node->ToElement() )
                  return node->ToElement();
      }
      return 0;
}



00454 TiXmlDocument* TiXmlNode::GetDocument() const
{
      const TiXmlNode* node;

      for( node = this; node; node = node->parent )
      {
            if ( node->ToDocument() )
                  return node->ToDocument();
      }
      return 0;
}


00467 TiXmlElement::TiXmlElement (const char * _value)
      : TiXmlNode( TiXmlNode::ELEMENT )
{
      firstChild = lastChild = 0;
      value = _value;
}


#ifdef TIXML_USE_STL
00476 TiXmlElement::TiXmlElement( const std::string& _value ) 
      : TiXmlNode( TiXmlNode::ELEMENT )
{
      firstChild = lastChild = 0;
      value = _value;
}
#endif


TiXmlElement::TiXmlElement( const TiXmlElement& copy)
      : TiXmlNode( TiXmlNode::ELEMENT )
{
      firstChild = lastChild = 0;
      copy.CopyTo( this );    
}


void TiXmlElement::operator=( const TiXmlElement& base )
{
      ClearThis();
      base.CopyTo( this );
}


TiXmlElement::~TiXmlElement()
{
      ClearThis();
}


void TiXmlElement::ClearThis()
{
      Clear();
      while( attributeSet.First() )
      {
            TiXmlAttribute* node = attributeSet.First();
            attributeSet.Remove( node );
            delete node;
      }
}


00518 const char * TiXmlElement::Attribute( const char * name ) const
{
      TiXmlAttribute* node = attributeSet.Find( name );

      if ( node )
            return node->Value();

      return 0;
}


00529 const char * TiXmlElement::Attribute( const char * name, int* i ) const
{
      const char * s = Attribute( name );
      if ( i )
      {
            if ( s )
                  *i = atoi( s );
            else
                  *i = 0;
      }
      return s;
}


00543 const char * TiXmlElement::Attribute( const char * name, double* d ) const
{
      const char * s = Attribute( name );
      if ( d )
      {
            if ( s )
                  *d = atof( s );
            else
                  *d = 0;
      }
      return s;
}


00557 int TiXmlElement::QueryIntAttribute( const char* name, int* ival ) const
{
      TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;

      return node->QueryIntValue( ival );
}


00567 int TiXmlElement::QueryDoubleAttribute( const char* name, double* dval ) const
{
      TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;

      return node->QueryDoubleValue( dval );
}


00577 void TiXmlElement::SetAttribute( const char * name, int val )
{     
      char buf[64];
      sprintf( buf, "%d", val );
      SetAttribute( name, buf );
}


00585 void TiXmlElement::SetDoubleAttribute( const char * name, double val )
{     
      char buf[128];
      sprintf( buf, "%f", val );
      SetAttribute( name, buf );
}


00593 void TiXmlElement::SetAttribute( const char * name, const char * _value )
{
      TiXmlAttribute* node = attributeSet.Find( name );
      if ( node )
      {
            node->SetValue( _value );
            return;
      }

      TiXmlAttribute* attrib = new TiXmlAttribute( name, _value );
      if ( attrib )
      {
            attributeSet.Add( attrib );
      }
      else
      {
            TiXmlDocument* document = GetDocument();
            if ( document ) document->SetError( TIXML_ERROR_OUT_OF_MEMORY, 0, 0, TIXML_ENCODING_UNKNOWN );
      }
}

00614 void TiXmlElement::Print( FILE* cfile, int depth ) const
{
      int i;
      for ( i=0; i<depth; i++ )
      {
            fprintf( cfile, "    " );
      }

      fprintf( cfile, "<%s", value.c_str() );

      TiXmlAttribute* attrib;
      for ( attrib = attributeSet.First(); attrib; attrib = attrib->Next() )
      {
            fprintf( cfile, " " );
            attrib->Print( cfile, depth );
      }

      // There are 3 different formatting approaches:
      // 1) An element without children is printed as a <foo /> node
      // 2) An element with only a text child is printed as <foo> text </foo>
      // 3) An element with children is printed on multiple lines.
      TiXmlNode* node;
      if ( !firstChild )
      {
            fprintf( cfile, " />" );
      }
      else if ( firstChild == lastChild && firstChild->ToText() )
      {
            fprintf( cfile, ">" );
            firstChild->Print( cfile, depth + 1 );
            fprintf( cfile, "</%s>", value.c_str() );
      }
      else
      {
            fprintf( cfile, ">" );

            for ( node = firstChild; node; node=node->NextSibling() )
            {
                  if ( !node->ToText() )
                  {
                        fprintf( cfile, "\n" );
                  }
                  node->Print( cfile, depth+1 );
            }
            fprintf( cfile, "\n" );
            for( i=0; i<depth; ++i )
            fprintf( cfile, "    " );
            fprintf( cfile, "</%s>", value.c_str() );
      }
}

void TiXmlElement::StreamOut( TIXML_OSTREAM * stream ) const
{
      (*stream) << "<" << value;

      TiXmlAttribute* attrib;
      for ( attrib = attributeSet.First(); attrib; attrib = attrib->Next() )
      {     
            (*stream) << " ";
            attrib->StreamOut( stream );
      }

      // If this node has children, give it a closing tag. Else
      // make it an empty tag.
      TiXmlNode* node;
      if ( firstChild )
      {           
            (*stream) << ">";

            for ( node = firstChild; node; node=node->NextSibling() )
            {
                  node->StreamOut( stream );
            }
            (*stream) << "</" << value << ">";
      }
      else
      {
            (*stream) << " />";
      }
}


void TiXmlElement::CopyTo( TiXmlElement* target ) const
{
      // superclass:
      TiXmlNode::CopyTo( target );

      // Element class: 
      // Clone the attributes, then clone the children.
      TiXmlAttribute* attribute = 0;
      for(  attribute = attributeSet.First();
      attribute;
      attribute = attribute->Next() )
      {
            target->SetAttribute( attribute->Name(), attribute->Value() );
      }

      TiXmlNode* node = 0;
      for ( node = firstChild; node; node = node->NextSibling() )
      {
            target->LinkEndChild( node->Clone() );
      }
}


00719 TiXmlNode* TiXmlElement::Clone() const
{
      TiXmlElement* clone = new TiXmlElement( Value() );
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


00730 TiXmlDocument::TiXmlDocument() : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      ClearError();
}

00736 TiXmlDocument::TiXmlDocument( const char * documentName ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      value = documentName;
      ClearError();
}


#ifdef TIXML_USE_STL
00745 TiXmlDocument::TiXmlDocument( const std::string& documentName ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
    value = documentName;
      ClearError();
}
#endif


TiXmlDocument::TiXmlDocument( const TiXmlDocument& copy ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      copy.CopyTo( this );
}


void TiXmlDocument::operator=( const TiXmlDocument& copy )
{
      Clear();
      copy.CopyTo( this );
}


00767 bool TiXmlDocument::LoadFile( TiXmlEncoding encoding )
{
      // See STL_STRING_BUG below.
      StringToBuffer buf( value );

      if ( buf.buffer && LoadFile( buf.buffer, encoding ) )
            return true;

      return false;
}


00779 bool TiXmlDocument::SaveFile() const
{
      // See STL_STRING_BUG below.
      StringToBuffer buf( value );

      if ( buf.buffer && SaveFile( buf.buffer ) )
            return true;

      return false;
}

00790 bool TiXmlDocument::LoadFile( const char* filename, TiXmlEncoding encoding )
{
      // Delete the existing data:
      Clear();
      location.Clear();

      // There was a really terrifying little bug here. The code:
      //          value = filename
      // in the STL case, cause the assignment method of the std::string to
      // be called. What is strange, is that the std::string had the same
      // address as it's c_str() method, and so bad things happen. Looks
      // like a bug in the Microsoft STL implementation.
      // See STL_STRING_BUG above.
      // Fixed with the StringToBuffer class.
      value = filename;

      FILE* file = fopen( value.c_str (), "r" );

      if ( file )
      {
            // Get the file size, so we can pre-allocate the string. HUGE speed impact.
            long length = 0;
            fseek( file, 0, SEEK_END );
            length = ftell( file );
            fseek( file, 0, SEEK_SET );

            // Strange case, but good to handle up front.
            if ( length == 0 )
            {
                  fclose( file );
                  return false;
            }

            // If we have a file, assume it is all one big XML file, and read it in.
            // The document parser may decide the document ends sooner than the entire file, however.
            TIXML_STRING data;
            data.reserve( length );

            const int BUF_SIZE = 2048;
            char buf[BUF_SIZE];

            while( fgets( buf, BUF_SIZE, file ) )
            {
                  data += buf;
            }
            fclose( file );

            Parse( data.c_str(), 0, encoding );

            if (  Error() )
            return false;
        else
                  return true;
      }
      SetError( TIXML_ERROR_OPENING_FILE, 0, 0, TIXML_ENCODING_UNKNOWN );
      return false;
}

00848 bool TiXmlDocument::SaveFile( const char * filename ) const
{
      // The old c stuff lives on...
      FILE* fp = fopen( filename, "w" );
      if ( fp )
      {
            Print( fp, 0 );
            fclose( fp );
            return true;
      }
      return false;
}


void TiXmlDocument::CopyTo( TiXmlDocument* target ) const
{
      TiXmlNode::CopyTo( target );

      target->error = error;
      target->errorDesc = errorDesc.c_str ();

      TiXmlNode* node = 0;
      for ( node = firstChild; node; node = node->NextSibling() )
      {
            target->LinkEndChild( node->Clone() );
      }     
}


00877 TiXmlNode* TiXmlDocument::Clone() const
{
      TiXmlDocument* clone = new TiXmlDocument();
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


00888 void TiXmlDocument::Print( FILE* cfile, int depth ) const
{
      TiXmlNode* node;
      for ( node=FirstChild(); node; node=node->NextSibling() )
      {
            node->Print( cfile, depth );
            fprintf( cfile, "\n" );
      }
}

void TiXmlDocument::StreamOut( TIXML_OSTREAM * out ) const
{
      TiXmlNode* node;
      for ( node=FirstChild(); node; node=node->NextSibling() )
      {
            node->StreamOut( out );

            // Special rule for streams: stop after the root element.
            // The stream in code will only read one element, so don't
            // write more than one.
            if ( node->ToElement() )
                  break;
      }
}


00914 TiXmlAttribute* TiXmlAttribute::Next() const
{
      // We are using knowledge of the sentinel. The sentinel
      // have a value or name.
      if ( next->value.empty() && next->name.empty() )
            return 0;
      return next;
}


00924 TiXmlAttribute* TiXmlAttribute::Previous() const
{
      // We are using knowledge of the sentinel. The sentinel
      // have a value or name.
      if ( prev->value.empty() && prev->name.empty() )
            return 0;
      return prev;
}


00934 void TiXmlAttribute::Print( FILE* cfile, int /*depth*/ ) const
{
      TIXML_STRING n, v;

      PutString( name, &n );
      PutString( value, &v );

      if (value.find ('\"') == TIXML_STRING::npos)
            fprintf (cfile, "%s=\"%s\"", n.c_str(), v.c_str() );
      else
            fprintf (cfile, "%s='%s'", n.c_str(), v.c_str() );
}


void TiXmlAttribute::StreamOut( TIXML_OSTREAM * stream ) const
{
      if (value.find( '\"' ) != TIXML_STRING::npos)
      {
            PutString( name, stream );
            (*stream) << "=" << "'";
            PutString( value, stream );
            (*stream) << "'";
      }
      else
      {
            PutString( name, stream );
            (*stream) << "=" << "\"";
            PutString( value, stream );
            (*stream) << "\"";
      }
}

00966 int TiXmlAttribute::QueryIntValue( int* ival ) const
{
      if ( sscanf( value.c_str(), "%d", ival ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

00973 int TiXmlAttribute::QueryDoubleValue( double* dval ) const
{
      if ( sscanf( value.c_str(), "%lf", dval ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

00980 void TiXmlAttribute::SetIntValue( int _value )
{
      char buf [64];
      sprintf (buf, "%d", _value);
      SetValue (buf);
}

00987 void TiXmlAttribute::SetDoubleValue( double _value )
{
      char buf [64];
      sprintf (buf, "%lf", _value);
      SetValue (buf);
}

00994 const int TiXmlAttribute::IntValue() const
{
      return atoi (value.c_str ());
}

00999 const double  TiXmlAttribute::DoubleValue() const
{
      return atof (value.c_str ());
}


TiXmlComment::TiXmlComment( const TiXmlComment& copy ) : TiXmlNode( TiXmlNode::COMMENT )
{
      copy.CopyTo( this );
}


void TiXmlComment::operator=( const TiXmlComment& base )
{
      Clear();
      base.CopyTo( this );
}


01018 void TiXmlComment::Print( FILE* cfile, int depth ) const
{
      for ( int i=0; i<depth; i++ )
      {
            fputs( "    ", cfile );
      }
      fprintf( cfile, "<!--%s-->", value.c_str() );
}

void TiXmlComment::StreamOut( TIXML_OSTREAM * stream ) const
{
      (*stream) << "<!--";
      //PutString( value, stream );
      (*stream) << value;
      (*stream) << "-->";
}


void TiXmlComment::CopyTo( TiXmlComment* target ) const
{
      TiXmlNode::CopyTo( target );
}


01042 TiXmlNode* TiXmlComment::Clone() const
{
      TiXmlComment* clone = new TiXmlComment();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01054 void TiXmlText::Print( FILE* cfile, int /*depth*/ ) const
{
      TIXML_STRING buffer;
      PutString( value, &buffer );
      fprintf( cfile, "%s", buffer.c_str() );
}


void TiXmlText::StreamOut( TIXML_OSTREAM * stream ) const
{
      PutString( value, stream );
}


void TiXmlText::CopyTo( TiXmlText* target ) const
{
      TiXmlNode::CopyTo( target );
}


01074 TiXmlNode* TiXmlText::Clone() const
{     
      TiXmlText* clone = 0;
      clone = new TiXmlText( "" );

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01087 TiXmlDeclaration::TiXmlDeclaration( const char * _version,
                                                      const char * _encoding,
                                                      const char * _standalone )
      : TiXmlNode( TiXmlNode::DECLARATION )
{
      version = _version;
      encoding = _encoding;
      standalone = _standalone;
}


#ifdef TIXML_USE_STL
01099 TiXmlDeclaration::TiXmlDeclaration( const std::string& _version,
                                                      const std::string& _encoding,
                                                      const std::string& _standalone )
      : TiXmlNode( TiXmlNode::DECLARATION )
{
      version = _version;
      encoding = _encoding;
      standalone = _standalone;
}
#endif


TiXmlDeclaration::TiXmlDeclaration( const TiXmlDeclaration& copy )
      : TiXmlNode( TiXmlNode::DECLARATION )
{
      copy.CopyTo( this );    
}


void TiXmlDeclaration::operator=( const TiXmlDeclaration& copy )
{
      Clear();
      copy.CopyTo( this );
}


01125 void TiXmlDeclaration::Print( FILE* cfile, int /*depth*/ ) const
{
      fprintf (cfile, "<?xml ");

      if ( !version.empty() )
            fprintf (cfile, "version=\"%s\" ", version.c_str ());
      if ( !encoding.empty() )
            fprintf (cfile, "encoding=\"%s\" ", encoding.c_str ());
      if ( !standalone.empty() )
            fprintf (cfile, "standalone=\"%s\" ", standalone.c_str ());
      fprintf (cfile, "?>");
}

void TiXmlDeclaration::StreamOut( TIXML_OSTREAM * stream ) const
{
      (*stream) << "<?xml ";

      if ( !version.empty() )
      {
            (*stream) << "version=\"";
            PutString( version, stream );
            (*stream) << "\" ";
      }
      if ( !encoding.empty() )
      {
            (*stream) << "encoding=\"";
            PutString( encoding, stream );
            (*stream ) << "\" ";
      }
      if ( !standalone.empty() )
      {
            (*stream) << "standalone=\"";
            PutString( standalone, stream );
            (*stream) << "\" ";
      }
      (*stream) << "?>";
}


void TiXmlDeclaration::CopyTo( TiXmlDeclaration* target ) const
{
      TiXmlNode::CopyTo( target );

      target->version = version;
      target->encoding = encoding;
      target->standalone = standalone;
}


01174 TiXmlNode* TiXmlDeclaration::Clone() const
{     
      TiXmlDeclaration* clone = new TiXmlDeclaration();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01186 void TiXmlUnknown::Print( FILE* cfile, int depth ) const
{
      for ( int i=0; i<depth; i++ )
            fprintf( cfile, "    " );
      fprintf( cfile, "<%s>", value.c_str() );
}


void TiXmlUnknown::StreamOut( TIXML_OSTREAM * stream ) const
{
      (*stream) << "<" << value << ">";         // Don't use entities here! It is unknown.
}


void TiXmlUnknown::CopyTo( TiXmlUnknown* target ) const
{
      TiXmlNode::CopyTo( target );
}


01206 TiXmlNode* TiXmlUnknown::Clone() const
{
      TiXmlUnknown* clone = new TiXmlUnknown();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


TiXmlAttributeSet::TiXmlAttributeSet()
{
      sentinel.next = &sentinel;
      sentinel.prev = &sentinel;
}


TiXmlAttributeSet::~TiXmlAttributeSet()
{
      assert( sentinel.next == &sentinel );
      assert( sentinel.prev == &sentinel );
}


void TiXmlAttributeSet::Add( TiXmlAttribute* addMe )
{
      assert( !Find( addMe->Name() ) );   // Shouldn't be multiply adding to the set.

      addMe->next = &sentinel;
      addMe->prev = sentinel.prev;

      sentinel.prev->next = addMe;
      sentinel.prev      = addMe;
}

void TiXmlAttributeSet::Remove( TiXmlAttribute* removeMe )
{
      TiXmlAttribute* node;

      for( node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( node == removeMe )
            {
                  node->prev->next = node->next;
                  node->next->prev = node->prev;
                  node->next = 0;
                  node->prev = 0;
                  return;
            }
      }
      assert( 0 );            // we tried to remove a non-linked attribute.
}

TiXmlAttribute*   TiXmlAttributeSet::Find( const char * name ) const
{
      TiXmlAttribute* node;

      for( node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( node->name == name )
                  return node;
      }
      return 0;
}


#ifdef TIXML_USE_STL    
TIXML_ISTREAM & operator >> (TIXML_ISTREAM & in, TiXmlNode & base)
{
      TIXML_STRING tag;
      tag.reserve( 8 * 1000 );
      base.StreamIn( &in, &tag );

      base.Parse( tag.c_str(), 0, TIXML_DEFAULT_ENCODING );
      return in;
}
#endif


TIXML_OSTREAM & operator<< (TIXML_OSTREAM & out, const TiXmlNode & base)
{
      base.StreamOut (& out);
      return out;
}


#ifdef TIXML_USE_STL    
01295 std::string & operator<< (std::string& out, const TiXmlNode& base )
{
   std::ostringstream os_stream( std::ostringstream::out );
   base.StreamOut( &os_stream );
   
   out.append( os_stream.str() );
   return out;
}
#endif


01306 TiXmlHandle TiXmlHandle::FirstChild() const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01318 TiXmlHandle TiXmlHandle::FirstChild( const char * value ) const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01330 TiXmlHandle TiXmlHandle::FirstChildElement() const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01342 TiXmlHandle TiXmlHandle::FirstChildElement( const char * value ) const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01354 TiXmlHandle TiXmlHandle::Child( int count ) const
{
      if ( node )
      {
            int i;
            TiXmlNode* child = node->FirstChild();
            for ( i=0;
                        child && i<count;
                        child = child->NextSibling(), ++i )
            {
                  // nothing
            }
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01373 TiXmlHandle TiXmlHandle::Child( const char* value, int count ) const
{
      if ( node )
      {
            int i;
            TiXmlNode* child = node->FirstChild( value );
            for ( i=0;
                        child && i<count;
                        child = child->NextSibling( value ), ++i )
            {
                  // nothing
            }
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01392 TiXmlHandle TiXmlHandle::ChildElement( int count ) const
{
      if ( node )
      {
            int i;
            TiXmlElement* child = node->FirstChildElement();
            for ( i=0;
                        child && i<count;
                        child = child->NextSiblingElement(), ++i )
            {
                  // nothing
            }
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01411 TiXmlHandle TiXmlHandle::ChildElement( const char* value, int count ) const
{
      if ( node )
      {
            int i;
            TiXmlElement* child = node->FirstChildElement( value );
            for ( i=0;
                        child && i<count;
                        child = child->NextSiblingElement( value ), ++i )
            {
                  // nothing
            }
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}

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