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tinyxml.cc

/*
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 ];
                  
                  #if defined(TIXML_SNPRINTF)         
                        TIXML_SNPRINTF( buf, sizeof(buf), "&#x%02X;", (unsigned) ( c & 0xff ) );
                  #else
                        sprintf( buf, "&#x%02X;", (unsigned) ( c & 0xff ) );
                  #endif            

                  //*ME:      warning C4267: convert 'size_t' to 'int'
                  //*ME:      Int-Cast to make compiler happy ...
                  outString->append( buf, (int)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; 
}


00176 void TiXmlNode::Clear()
{
      TiXmlNode* node = firstChild;
      TiXmlNode* temp = 0;

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

      firstChild = 0;
      lastChild = 0;
}


00193 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;
}


00210 TiXmlNode* TiXmlNode::InsertEndChild( const TiXmlNode& addThis )
{
      TiXmlNode* node = addThis.Clone();
      if ( !node )
            return 0;

      return LinkEndChild( node );
}


00220 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;
}


00246 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;
}


00272 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;
}


00300 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;
}

00322 const TiXmlNode* TiXmlNode::FirstChild( const char * _value ) const
{
      const TiXmlNode* node;
      for ( node = firstChild; node; node = node->next )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}


00334 TiXmlNode* TiXmlNode::FirstChild( const char * _value )
{
      TiXmlNode* node;
      for ( node = firstChild; node; node = node->next )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}


const TiXmlNode* TiXmlNode::LastChild( const char * _value ) const
{
      const TiXmlNode* node;
      for ( node = lastChild; node; node = node->prev )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

00357 TiXmlNode* TiXmlNode::LastChild( const char * _value )
{
      TiXmlNode* node;
      for ( node = lastChild; node; node = node->prev )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

00368 const TiXmlNode* TiXmlNode::IterateChildren( const TiXmlNode* previous ) const
{
      if ( !previous )
      {
            return FirstChild();
      }
      else
      {
            assert( previous->parent == this );
            return previous->NextSibling();
      }
}

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

00394 const TiXmlNode* TiXmlNode::IterateChildren( const char * val, const TiXmlNode* previous ) const
{
      if ( !previous )
      {
            return FirstChild( val );
      }
      else
      {
            assert( previous->parent == this );
            return previous->NextSibling( val );
      }
}

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

00420 const TiXmlNode* TiXmlNode::NextSibling( const char * _value ) const 
{
      const TiXmlNode* node;
      for ( node = next; node; node = node->next )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

TiXmlNode* TiXmlNode::NextSibling( const char * _value )
{
      TiXmlNode* node;
      for ( node = next; node; node = node->next )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

00442 const TiXmlNode* TiXmlNode::PreviousSibling( const char * _value ) const
{
      const TiXmlNode* node;
      for ( node = prev; node; node = node->prev )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

TiXmlNode* TiXmlNode::PreviousSibling( const char * _value )
{
      TiXmlNode* node;
      for ( node = prev; node; node = node->prev )
      {
            if ( strcmp( node->Value(), _value ) == 0 )
                  return node;
      }
      return 0;
}

00464 void TiXmlElement::RemoveAttribute( const char * name )
{
      TiXmlAttribute* node = attributeSet.Find( name );
      if ( node )
      {
            attributeSet.Remove( node );
            delete node;
      }
}

00474 const TiXmlElement* TiXmlNode::FirstChildElement() const
{
      const TiXmlNode* node;

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

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

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

00502 const TiXmlElement* TiXmlNode::FirstChildElement( const char * _value ) const
{
      const TiXmlNode* node;

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

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

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

00530 const TiXmlElement* TiXmlNode::NextSiblingElement() const
{
      const TiXmlNode* node;

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

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

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

00558 const TiXmlElement* TiXmlNode::NextSiblingElement( const char * _value ) const
{
      const TiXmlNode* node;

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

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

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


00587 const TiXmlDocument* TiXmlNode::GetDocument() const
{
      const TiXmlNode* node;

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

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

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

00611 TiXmlElement::TiXmlElement (const char * _value)
      : TiXmlNode( TiXmlNode::ELEMENT )
{
      firstChild = lastChild = 0;
      value = _value;
}


#ifdef TIXML_USE_STL
00620 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;
      }
}


00662 const char * TiXmlElement::Attribute( const char * name ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );

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

      return 0;
}


00673 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;
}


00687 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;
}


00701 int TiXmlElement::QueryIntAttribute( const char* name, int* ival ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;

      return node->QueryIntValue( ival );
}


00711 int TiXmlElement::QueryDoubleAttribute( const char* name, double* dval ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;

      return node->QueryDoubleValue( dval );
}


00721 void TiXmlElement::SetAttribute( const char * name, int val )
{     
      char buf[64];
      #if defined(TIXML_SNPRINTF)         
            TIXML_SNPRINTF( buf, sizeof(buf), "%d", val );
      #else
            sprintf( buf, "%d", val );
      #endif
      SetAttribute( name, buf );
}


00733 void TiXmlElement::SetDoubleAttribute( const char * name, double val )
{     
      char buf[256];
      #if defined(TIXML_SNPRINTF)         
            TIXML_SNPRINTF( buf, sizeof(buf), "%f", val );
      #else
            sprintf( buf, "%f", val );
      #endif
      SetAttribute( name, buf );
}


00745 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 );
      }
}

00766 void TiXmlElement::Print( FILE* cfile, int depth ) const
{
      int i;
      for ( i=0; i<depth; i++ )
      {
            fprintf( cfile, "    " );
      }

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

      const 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;

      const 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.
      const 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() );
      }
}


00871 TiXmlNode* TiXmlElement::Clone() const
{
      TiXmlElement* clone = new TiXmlElement( Value() );
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


00882 const char* TiXmlElement::GetText() const
{
      const TiXmlNode* child = this->FirstChild();
      if ( child ) {
            const TiXmlText* childText = child->ToText();
            if ( childText ) {
                  return childText->Value();
            }
      }
      return 0;
}


00895 TiXmlDocument::TiXmlDocument() : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      useMicrosoftBOM = false;
      ClearError();
}

00902 TiXmlDocument::TiXmlDocument( const char * documentName ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      useMicrosoftBOM = false;
      value = documentName;
      ClearError();
}


#ifdef TIXML_USE_STL
00912 TiXmlDocument::TiXmlDocument( const std::string& documentName ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      useMicrosoftBOM = false;
    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 );
}


00935 bool TiXmlDocument::LoadFile( TiXmlEncoding encoding )
{
      // See STL_STRING_BUG below.
      StringToBuffer buf( value );

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

      return false;
}


00947 bool TiXmlDocument::SaveFile() const
{
      // See STL_STRING_BUG below.
      StringToBuffer buf( value );

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

      return false;
}

00958 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;

      // reading in binary mode so that tinyxml can normalize the EOL
      FILE* file = fopen( value.c_str (), "rb" );     

      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 );

            // Subtle bug here. TinyXml did use fgets. But from the XML spec:
            // 2.11 End-of-Line Handling
            // <snip>
            // <quote>
            // ...the XML processor MUST behave as if it normalized all line breaks in external 
            // parsed entities (including the document entity) on input, before parsing, by translating 
            // both the two-character sequence #xD #xA and any #xD that is not followed by #xA to 
            // a single #xA character.
            // </quote>
            //
            // It is not clear fgets does that, and certainly isn't clear it works cross platform. 
            // Generally, you expect fgets to translate from the convention of the OS to the c/unix
            // convention, and not work generally.

            /*
            while( fgets( buf, sizeof(buf), file ) )
            {
                  data += buf;
            }
            */

            char* buf = new char[ length+1 ];
            buf[0] = 0;

            if ( fread( buf, length, 1, file ) != 1 ) {
            //if ( fread( buf, 1, length, file ) != (size_t)length ) {
                  SetError( TIXML_ERROR_OPENING_FILE, 0, 0, TIXML_ENCODING_UNKNOWN );
                  fclose( file );
                  return false;
            }
            fclose( file );

            const char* lastPos = buf;
            const char* p = buf;

            buf[length] = 0;
            while( *p ) {
                  assert( p < (buf+length) );
                  if ( *p == 0xa ) {
                        // Newline character. No special rules for this. Append all the characters
                        // since the last string, and include the newline.
                        data.append( lastPos, p-lastPos+1 );      // append, include the newline
                        ++p;                                                  // move past the newline
                        lastPos = p;                                          // and point to the new buffer (may be 0)
                        assert( p <= (buf+length) );
                  }
                  else if ( *p == 0xd ) {
                        // Carriage return. Append what we have so far, then
                        // handle moving forward in the buffer.
                        if ( (p-lastPos) > 0 ) {
                              data.append( lastPos, p-lastPos );  // do not add the CR
                        }
                        data += (char)0xa;                                    // a proper newline

                        if ( *(p+1) == 0xa ) {
                              // Carriage return - new line sequence
                              p += 2;
                              lastPos = p;
                              assert( p <= (buf+length) );
                        }
                        else {
                              // it was followed by something else...that is presumably characters again.
                              ++p;
                              lastPos = p;
                              assert( p <= (buf+length) );
                        }
                  }
                  else {
                        ++p;
                  }
            }
            // Handle any left over characters.
            if ( p-lastPos ) {
                  data.append( lastPos, p-lastPos );
            }           
            delete [] buf;
            buf = 0;

            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;
}

01086 bool TiXmlDocument::SaveFile( const char * filename ) const
{
      // The old c stuff lives on...
      FILE* fp = fopen( filename, "w" );
      if ( fp )
      {
            if ( useMicrosoftBOM ) 
            {
                  const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
                  const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
                  const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;

                  fputc( TIXML_UTF_LEAD_0, fp );
                  fputc( TIXML_UTF_LEAD_1, fp );
                  fputc( TIXML_UTF_LEAD_2, 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() );
      }     
}


01125 TiXmlNode* TiXmlDocument::Clone() const
{
      TiXmlDocument* clone = new TiXmlDocument();
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01136 void TiXmlDocument::Print( FILE* cfile, int depth ) const
{
      const TiXmlNode* node;
      for ( node=FirstChild(); node; node=node->NextSibling() )
      {
            node->Print( cfile, depth );
            fprintf( cfile, "\n" );
      }
}

void TiXmlDocument::StreamOut( TIXML_OSTREAM * out ) const
{
      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;
      }
}


01162 const 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;
}

TiXmlAttribute* TiXmlAttribute::Next()
{
      // 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;
}

01180 const 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;
}

TiXmlAttribute* TiXmlAttribute::Previous()
{
      // 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;
}

01198 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) << "\"";
      }
}

01230 int TiXmlAttribute::QueryIntValue( int* ival ) const
{
      if ( sscanf( value.c_str(), "%d", ival ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

01237 int TiXmlAttribute::QueryDoubleValue( double* dval ) const
{
      if ( sscanf( value.c_str(), "%lf", dval ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

01244 void TiXmlAttribute::SetIntValue( int _value )
{
      char buf [64];
      #if defined(TIXML_SNPRINTF)         
            TIXML_SNPRINTF(buf, sizeof(buf), "%d", _value);
      #else
            sprintf (buf, "%d", _value);
      #endif
      SetValue (buf);
}

01255 void TiXmlAttribute::SetDoubleValue( double _value )
{
      char buf [256];
      #if defined(TIXML_SNPRINTF)         
            TIXML_SNPRINTF( buf, sizeof(buf), "%lf", _value);
      #else
            sprintf (buf, "%lf", _value);
      #endif
      SetValue (buf);
}

01266 int TiXmlAttribute::IntValue() const
{
      return atoi (value.c_str ());
}

01271 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 );
}


01290 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 );
}


01314 TiXmlNode* TiXmlComment::Clone() const
{
      TiXmlComment* clone = new TiXmlComment();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01326 void TiXmlText::Print( FILE* cfile, int depth ) const
{
      if ( cdata )
      {
            int i;
            fprintf( cfile, "\n" );
            for ( i=0; i<depth; i++ ) {
                  fprintf( cfile, "    " );
            }
            fprintf( cfile, "<![CDATA[" );
            fprintf( cfile, "%s", value.c_str() );    // unformatted output
            fprintf( cfile, "]]>\n" );
      }
      else
      {
            TIXML_STRING buffer;
            PutString( value, &buffer );
            fprintf( cfile, "%s", buffer.c_str() );
      }
}


void TiXmlText::StreamOut( TIXML_OSTREAM * stream ) const
{
      if ( cdata )
      {
            (*stream) << "<![CDATA[" << value << "]]>";
      }
      else
      {
            PutString( value, stream );
      }
}


void TiXmlText::CopyTo( TiXmlText* target ) const
{
      TiXmlNode::CopyTo( target );
      target->cdata = cdata;
}


01368 TiXmlNode* TiXmlText::Clone() const
{     
      TiXmlText* clone = 0;
      clone = new TiXmlText( "" );

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01381 TiXmlDeclaration::TiXmlDeclaration( const char * _version,
                                                      const char * _encoding,
                                                      const char * _standalone )
      : TiXmlNode( TiXmlNode::DECLARATION )
{
      version = _version;
      encoding = _encoding;
      standalone = _standalone;
}


#ifdef TIXML_USE_STL
01393 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 );
}


01419 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;
}


01468 TiXmlNode* TiXmlDeclaration::Clone() const
{     
      TiXmlDeclaration* clone = new TiXmlDeclaration();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01480 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 );
}


01500 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.
}

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

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

TiXmlAttribute*   TiXmlAttributeSet::Find( const char * name )
{
      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    
01600 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


01611 TiXmlHandle TiXmlHandle::FirstChild() const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01623 TiXmlHandle TiXmlHandle::FirstChild( const char * value ) const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01635 TiXmlHandle TiXmlHandle::FirstChildElement() const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01647 TiXmlHandle TiXmlHandle::FirstChildElement( const char * value ) const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01659 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 );
}


01678 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 );
}


01697 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 );
}


01716 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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