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tinyxml.cpp

/*
www.sourceforge.net/projects/tinyxml
Original code (2.0 and earlier )copyright (c) 2000-2006 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>

#ifdef TIXML_USE_STL
#include <sstream>
#include <iostream>
#endif

#include "tinyxml.h"


bool TiXmlBase::condenseWhiteSpace = true;

// Microsoft compiler security
FILE* TiXmlFOpen( const char* filename, const char* mode )
{
      #if defined(_MSC_VER) && (_MSC_VER >= 1400 )
            FILE* fp = 0;
            errno_t err = fopen_s( &fp, filename, mode );
            if ( !err && fp )
                  return fp;
            return 0;
      #else
            return fopen( filename, mode );
      #endif
}

00051 void TiXmlBase::EncodeString( 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;
            }
      }
}


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; 
}


00167 void TiXmlNode::Clear()
{
      TiXmlNode* node = firstChild;
      TiXmlNode* temp = 0;

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

      firstChild = 0;
      lastChild = 0;
}


00184 TiXmlNode* TiXmlNode::LinkEndChild( TiXmlNode* node )
{
      assert( node->parent == 0 || node->parent == this );
      assert( node->GetDocument() == 0 || node->GetDocument() == this->GetDocument() );

      if ( node->Type() == TiXmlNode::DOCUMENT )
      {
            delete node;
            if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN );
            return 0;
      }

      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;
}


00211 TiXmlNode* TiXmlNode::InsertEndChild( const TiXmlNode& addThis )
{
      if ( addThis.Type() == TiXmlNode::DOCUMENT )
      {
            if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN );
            return 0;
      }
      TiXmlNode* node = addThis.Clone();
      if ( !node )
            return 0;

      return LinkEndChild( node );
}


00226 TiXmlNode* TiXmlNode::InsertBeforeChild( TiXmlNode* beforeThis, const TiXmlNode& addThis )
{     
      if ( !beforeThis || beforeThis->parent != this ) {
            return 0;
      }
      if ( addThis.Type() == TiXmlNode::DOCUMENT )
      {
            if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN );
            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;
}


00258 TiXmlNode* TiXmlNode::InsertAfterChild( TiXmlNode* afterThis, const TiXmlNode& addThis )
{
      if ( !afterThis || afterThis->parent != this ) {
            return 0;
      }
      if ( addThis.Type() == TiXmlNode::DOCUMENT )
      {
            if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN );
            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;
}


00290 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;
}


00318 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;
}

00340 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;
}


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;
}


00364 const TiXmlNode* TiXmlNode::IterateChildren( const TiXmlNode* previous ) const
{
      if ( !previous )
      {
            return FirstChild();
      }
      else
      {
            assert( previous->parent == this );
            return previous->NextSibling();
      }
}


00378 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 );
      }
}


00392 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;
}


00404 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;
}


00416 void TiXmlElement::RemoveAttribute( const char * name )
{
    #ifdef TIXML_USE_STL
      TIXML_STRING str( name );
      TiXmlAttribute* node = attributeSet.Find( str );
      #else
      TiXmlAttribute* node = attributeSet.Find( name );
      #endif
      if ( node )
      {
            attributeSet.Remove( node );
            delete node;
      }
}

00431 const TiXmlElement* TiXmlNode::FirstChildElement() const
{
      const TiXmlNode* node;

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


00446 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;
}


00461 const TiXmlElement* TiXmlNode::NextSiblingElement() const
{
      const TiXmlNode* node;

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


00476 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;
}


00491 const TiXmlDocument* TiXmlNode::GetDocument() const
{
      const TiXmlNode* node;

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


00504 TiXmlElement::TiXmlElement (const char * _value)
      : TiXmlNode( TiXmlNode::ELEMENT )
{
      firstChild = lastChild = 0;
      value = _value;
}


#ifdef TIXML_USE_STL
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;
      }
}


00555 const char* TiXmlElement::Attribute( const char* name ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( node )
            return node->Value();
      return 0;
}


#ifdef TIXML_USE_STL
const std::string* TiXmlElement::Attribute( const std::string& name ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( node )
            return &node->ValueStr();
      return 0;
}
#endif


00575 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;
}


#ifdef TIXML_USE_STL
const std::string* TiXmlElement::Attribute( const std::string& name, int* i ) const
{
      const std::string* s = Attribute( name );
      if ( i )
      {
            if ( s ) {
                  *i = atoi( s->c_str() );
            }
            else {
                  *i = 0;
            }
      }
      return s;
}
#endif


00609 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;
}


#ifdef TIXML_USE_STL
const std::string* TiXmlElement::Attribute( const std::string& name, double* d ) const
{
      const std::string* s = Attribute( name );
      if ( d )
      {
            if ( s ) {
                  *d = atof( s->c_str() );
            }
            else {
                  *d = 0;
            }
      }
      return s;
}
#endif


00643 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 );
}


#ifdef TIXML_USE_STL
int TiXmlElement::QueryIntAttribute( const std::string& name, int* ival ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;
      return node->QueryIntValue( ival );
}
#endif


00663 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 );
}


#ifdef TIXML_USE_STL
int TiXmlElement::QueryDoubleAttribute( const std::string& name, double* dval ) const
{
      const TiXmlAttribute* node = attributeSet.Find( name );
      if ( !node )
            return TIXML_NO_ATTRIBUTE;
      return node->QueryDoubleValue( dval );
}
#endif


00683 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 );
}


#ifdef TIXML_USE_STL
void TiXmlElement::SetAttribute( const std::string& name, int val )
{     
   std::ostringstream oss;
   oss << val;
   SetAttribute( name, oss.str() );
}
#endif


00705 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 );
}


00717 void TiXmlElement::SetAttribute( const char * cname, const char * cvalue )
{
    #ifdef TIXML_USE_STL
      TIXML_STRING _name( cname );
      TIXML_STRING _value( cvalue );
      #else
      const char* _name = cname;
      const char* _value = cvalue;
      #endif

      TiXmlAttribute* node = attributeSet.Find( _name );
      if ( node )
      {
            node->SetValue( _value );
            return;
      }

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


#ifdef TIXML_USE_STL
void TiXmlElement::SetAttribute( const std::string& name, const std::string& _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 );
      }
}
#endif


00771 void TiXmlElement::Print( FILE* cfile, int depth ) const
{
      int i;
      assert( cfile );
      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::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() );
      }
}

00846 bool TiXmlElement::Accept( TiXmlVisitor* visitor ) const
{
      if ( visitor->VisitEnter( *this, attributeSet.First() ) ) 
      {
            for ( const TiXmlNode* node=FirstChild(); node; node=node->NextSibling() )
            {
                  if ( !node->Accept( visitor ) )
                        break;
            }
      }
      return visitor->VisitExit( *this );
}


00860 TiXmlNode* TiXmlElement::Clone() const
{
      TiXmlElement* clone = new TiXmlElement( Value() );
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


00871 const char* TiXmlElement::GetText() const
{
      const TiXmlNode* child = this->FirstChild();
      if ( child ) {
            const TiXmlText* childText = child->ToText();
            if ( childText ) {
                  return childText->Value();
            }
      }
      return 0;
}


00884 TiXmlDocument::TiXmlDocument() : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      useMicrosoftBOM = false;
      ClearError();
}

00891 TiXmlDocument::TiXmlDocument( const char * documentName ) : TiXmlNode( TiXmlNode::DOCUMENT )
{
      tabsize = 4;
      useMicrosoftBOM = false;
      value = documentName;
      ClearError();
}


#ifdef TIXML_USE_STL
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 );
}


00924 bool TiXmlDocument::LoadFile( TiXmlEncoding encoding )
{
      // See STL_STRING_BUG below.
      //StringToBuffer buf( value );

      return LoadFile( Value(), encoding );
}


00933 bool TiXmlDocument::SaveFile() const
{
      // See STL_STRING_BUG below.
//    StringToBuffer buf( value );
//
//    if ( buf.buffer && SaveFile( buf.buffer ) )
//          return true;
//
//    return false;
      return SaveFile( Value() );
}

00945 bool TiXmlDocument::LoadFile( const char* _filename, TiXmlEncoding encoding )
{
      // 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.
      // Add an extra string to avoid the crash.
      TIXML_STRING filename( _filename );
      value = filename;

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

      if ( file )
      {
            bool result = LoadFile( file, encoding );
            fclose( file );
            return result;
      }
      else
      {
            SetError( TIXML_ERROR_OPENING_FILE, 0, 0, TIXML_ENCODING_UNKNOWN );
            return false;
      }
}

00973 bool TiXmlDocument::LoadFile( FILE* file, TiXmlEncoding encoding )
{
      if ( !file ) 
      {
            SetError( TIXML_ERROR_OPENING_FILE, 0, 0, TIXML_ENCODING_UNKNOWN );
            return false;
      }

      // Delete the existing data:
      Clear();
      location.Clear();

      // 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 )
      {
            SetError( TIXML_ERROR_DOCUMENT_EMPTY, 0, 0, TIXML_ENCODING_UNKNOWN );
            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 ) {
            delete [] buf;
            SetError( TIXML_ERROR_OPENING_FILE, 0, 0, TIXML_ENCODING_UNKNOWN );
            return false;
      }

      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;
}


01088 bool TiXmlDocument::SaveFile( const char * filename ) const
{
      // The old c stuff lives on...
      FILE* fp = TiXmlFOpen( filename, "w" );
      if ( fp )
      {
            bool result = SaveFile( fp );
            fclose( fp );
            return result;
      }
      return false;
}


01102 bool TiXmlDocument::SaveFile( FILE* fp ) const
{
      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 );
      return (ferror(fp) == 0);
}


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

      target->error = error;
      target->errorId = errorId;
      target->errorDesc = errorDesc;
      target->tabsize = tabsize;
      target->errorLocation = errorLocation;
      target->useMicrosoftBOM = useMicrosoftBOM;

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


01138 TiXmlNode* TiXmlDocument::Clone() const
{
      TiXmlDocument* clone = new TiXmlDocument();
      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01149 void TiXmlDocument::Print( FILE* cfile, int depth ) const
{
      assert( cfile );
      for ( const TiXmlNode* node=FirstChild(); node; node=node->NextSibling() )
      {
            node->Print( cfile, depth );
            fprintf( cfile, "\n" );
      }
}


01160 bool TiXmlDocument::Accept( TiXmlVisitor* visitor ) const
{
      if ( visitor->VisitEnter( *this ) )
      {
            for ( const TiXmlNode* node=FirstChild(); node; node=node->NextSibling() )
            {
                  if ( !node->Accept( visitor ) )
                        break;
            }
      }
      return visitor->VisitExit( *this );
}


01174 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;
}
*/

01194 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;
}
*/

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

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

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


01240 int TiXmlAttribute::QueryIntValue( int* ival ) const
{
      if ( TIXML_SSCANF( value.c_str(), "%d", ival ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

01247 int TiXmlAttribute::QueryDoubleValue( double* dval ) const
{
      if ( TIXML_SSCANF( value.c_str(), "%lf", dval ) == 1 )
            return TIXML_SUCCESS;
      return TIXML_WRONG_TYPE;
}

01254 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);
}

01265 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);
}

01276 int TiXmlAttribute::IntValue() const
{
      return atoi (value.c_str ());
}

01281 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 );
}


01300 void TiXmlComment::Print( FILE* cfile, int depth ) const
{
      assert( cfile );
      for ( int i=0; i<depth; i++ )
      {
            fprintf( cfile,  "    " );
      }
      fprintf( cfile, "<!--%s-->", value.c_str() );
}


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


01317 bool TiXmlComment::Accept( TiXmlVisitor* visitor ) const
{
      return visitor->Visit( *this );
}


01323 TiXmlNode* TiXmlComment::Clone() const
{
      TiXmlComment* clone = new TiXmlComment();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01335 void TiXmlText::Print( FILE* cfile, int depth ) const
{
      assert( cfile );
      if ( cdata )
      {
            int i;
            fprintf( cfile, "\n" );
            for ( i=0; i<depth; i++ ) {
                  fprintf( cfile, "    " );
            }
            fprintf( cfile, "<![CDATA[%s]]>\n", value.c_str() );  // unformatted output
      }
      else
      {
            TIXML_STRING buffer;
            EncodeString( value, &buffer );
            fprintf( cfile, "%s", buffer.c_str() );
      }
}


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


01363 bool TiXmlText::Accept( TiXmlVisitor* visitor ) const
{
      return visitor->Visit( *this );
}


01369 TiXmlNode* TiXmlText::Clone() const
{     
      TiXmlText* clone = 0;
      clone = new TiXmlText( "" );

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01382 TiXmlDeclaration::TiXmlDeclaration( const char * _version,
                                                      const char * _encoding,
                                                      const char * _standalone )
      : TiXmlNode( TiXmlNode::DECLARATION )
{
      version = _version;
      encoding = _encoding;
      standalone = _standalone;
}


#ifdef TIXML_USE_STL
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 );
}


void TiXmlDeclaration::Print( FILE* cfile, int /*depth*/, TIXML_STRING* str ) const
{
      if ( cfile ) fprintf( cfile, "<?xml " );
      if ( str )   (*str) += "<?xml ";

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


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

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


01452 bool TiXmlDeclaration::Accept( TiXmlVisitor* visitor ) const
{
      return visitor->Visit( *this );
}


01458 TiXmlNode* TiXmlDeclaration::Clone() const
{     
      TiXmlDeclaration* clone = new TiXmlDeclaration();

      if ( !clone )
            return 0;

      CopyTo( clone );
      return clone;
}


01470 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::CopyTo( TiXmlUnknown* target ) const
{
      TiXmlNode::CopyTo( target );
}


01484 bool TiXmlUnknown::Accept( TiXmlVisitor* visitor ) const
{
      return visitor->Visit( *this );
}


01490 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 )
{
    #ifdef TIXML_USE_STL
      assert( !Find( TIXML_STRING( addMe->Name() ) ) );     // Shouldn't be multiply adding to the set.
      #else
      assert( !Find( addMe->Name() ) );   // Shouldn't be multiply adding to the set.
      #endif

      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.
}


#ifdef TIXML_USE_STL
const TiXmlAttribute* TiXmlAttributeSet::Find( const std::string& name ) const
{
      for( const TiXmlAttribute* node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( node->name == name )
                  return node;
      }
      return 0;
}

/*
TiXmlAttribute*   TiXmlAttributeSet::Find( const std::string& name )
{
      for( TiXmlAttribute* node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( node->name == name )
                  return node;
      }
      return 0;
}
*/
#endif


const TiXmlAttribute* TiXmlAttributeSet::Find( const char* name ) const
{
      for( const TiXmlAttribute* node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( strcmp( node->name.c_str(), name ) == 0 )
                  return node;
      }
      return 0;
}

/*
TiXmlAttribute*   TiXmlAttributeSet::Find( const char* name )
{
      for( TiXmlAttribute* node = sentinel.next; node != &sentinel; node = node->next )
      {
            if ( strcmp( node->name.c_str(), name ) == 0 )
                  return node;
      }
      return 0;
}
*/

#ifdef TIXML_USE_STL    
std::istream& operator>> (std::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


#ifdef TIXML_USE_STL    
std::ostream& operator<< (std::ostream & out, const TiXmlNode & base)
{
      TiXmlPrinter printer;
      printer.SetStreamPrinting();
      base.Accept( &printer );
      out << printer.Str();

      return out;
}


std::string& operator<< (std::string& out, const TiXmlNode& base )
{
      TiXmlPrinter printer;
      printer.SetStreamPrinting();
      base.Accept( &printer );
      out.append( printer.Str() );

      return out;
}
#endif


01634 TiXmlHandle TiXmlHandle::FirstChild() const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01646 TiXmlHandle TiXmlHandle::FirstChild( const char * value ) const
{
      if ( node )
      {
            TiXmlNode* child = node->FirstChild( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01658 TiXmlHandle TiXmlHandle::FirstChildElement() const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement();
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01670 TiXmlHandle TiXmlHandle::FirstChildElement( const char * value ) const
{
      if ( node )
      {
            TiXmlElement* child = node->FirstChildElement( value );
            if ( child )
                  return TiXmlHandle( child );
      }
      return TiXmlHandle( 0 );
}


01682 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 );
}


01701 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 );
}


01720 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 );
}


01739 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 );
}


01758 bool TiXmlPrinter::VisitEnter( const TiXmlDocument& )
{
      return true;
}

01763 bool TiXmlPrinter::VisitExit( const TiXmlDocument& )
{
      return true;
}

01768 bool TiXmlPrinter::VisitEnter( const TiXmlElement& element, const TiXmlAttribute* firstAttribute )
{
      DoIndent();
      buffer += "<";
      buffer += element.Value();

      for( const TiXmlAttribute* attrib = firstAttribute; attrib; attrib = attrib->Next() )
      {
            buffer += " ";
            attrib->Print( 0, 0, &buffer );
      }

      if ( !element.FirstChild() ) 
      {
            buffer += " />";
            DoLineBreak();
      }
      else 
      {
            buffer += ">";
            if (    element.FirstChild()->ToText()
                    && element.LastChild() == element.FirstChild()
                    && element.FirstChild()->ToText()->CDATA() == false )
            {
                  simpleTextPrint = true;
                  // no DoLineBreak()!
            }
            else
            {
                  DoLineBreak();
            }
      }
      ++depth;    
      return true;
}


01805 bool TiXmlPrinter::VisitExit( const TiXmlElement& element )
{
      --depth;
      if ( !element.FirstChild() ) 
      {
            // nothing.
      }
      else 
      {
            if ( simpleTextPrint )
            {
                  simpleTextPrint = false;
            }
            else
            {
                  DoIndent();
            }
            buffer += "</";
            buffer += element.Value();
            buffer += ">";
            DoLineBreak();
      }
      return true;
}


01831 bool TiXmlPrinter::Visit( const TiXmlText& text )
{
      if ( text.CDATA() )
      {
            DoIndent();
            buffer += "<![CDATA[";
            buffer += text.Value();
            buffer += "]]>";
            DoLineBreak();
      }
      else if ( simpleTextPrint )
      {
            TIXML_STRING str;
            TiXmlBase::EncodeString( text.ValueTStr(), &str );
            buffer += str;
      }
      else
      {
            DoIndent();
            TIXML_STRING str;
            TiXmlBase::EncodeString( text.ValueTStr(), &str );
            buffer += str;
            DoLineBreak();
      }
      return true;
}


01859 bool TiXmlPrinter::Visit( const TiXmlDeclaration& declaration )
{
      DoIndent();
      declaration.Print( 0, 0, &buffer );
      DoLineBreak();
      return true;
}


01868 bool TiXmlPrinter::Visit( const TiXmlComment& comment )
{
      DoIndent();
      buffer += "<!--";
      buffer += comment.Value();
      buffer += "-->";
      DoLineBreak();
      return true;
}


01879 bool TiXmlPrinter::Visit( const TiXmlUnknown& unknown )
{
      DoIndent();
      buffer += "<";
      buffer += unknown.Value();
      buffer += ">";
      DoLineBreak();
      return true;
}


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