Diff: TinyXml2/tinyxml2.cpp

Revision:

0:1855a008f28e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TinyXml2/tinyxml2.cpp	Thu Aug 16 15:49:19 2012 +0000
@@ -0,0 +1,2020 @@
+/*
+Original code by 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 "tinyxml2.h"
+
+#include <cstdio>
+#include <cstdlib>
+#include <new>
+#include <cstddef>
+
+using namespace tinyxml2;
+using namespace std;
+
+static const char LINE_FEED                = (char)0x0a;            // all line endings are normalized to LF
+static const char LF = LINE_FEED;
+static const char CARRIAGE_RETURN        = (char)0x0d;            // CR gets filtered out
+static const char CR = CARRIAGE_RETURN;
+static const char SINGLE_QUOTE            = '\'';
+static const char DOUBLE_QUOTE            = '\"';
+
+// Bunch of unicode info at:
+//        http://www.unicode.org/faq/utf_bom.html
+//    ef bb bf (Microsoft "lead bytes") - designates UTF-8
+
+static const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
+static const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
+static const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;
+
+
+#define DELETE_NODE( node )    {            \
+    if ( node ) {                        \
+        MemPool* pool = node->memPool;    \
+        node->~XMLNode();                \
+        pool->Free( node );                \
+    }                                    \
+}
+#define DELETE_ATTRIBUTE( attrib ) {        \
+    if ( attrib ) {                            \
+        MemPool* pool = attrib->memPool;    \
+        attrib->~XMLAttribute();            \
+        pool->Free( attrib );                \
+    }                                        \
+}
+
+struct Entity {
+    const char* pattern;
+    int length;
+    char value;
+};
+
+static const int NUM_ENTITIES = 5;
+static const Entity entities[NUM_ENTITIES] = 
+{
+    { "quot", 4,    DOUBLE_QUOTE },
+    { "amp", 3,        '&'  },
+    { "apos", 4,    SINGLE_QUOTE },
+    { "lt",    2,         '<'     },
+    { "gt",    2,        '>'     }
+};
+
+
+StrPair::~StrPair()
+{
+    Reset();
+}
+
+
+void StrPair::Reset()
+{
+    if ( flags & NEEDS_DELETE ) {
+        delete [] start;
+    }
+    flags = 0;
+    start = 0;
+    end = 0;
+}
+
+
+void StrPair::SetStr( const char* str, int flags )
+{
+    Reset();
+    size_t len = strlen( str );
+    start = new char[ len+1 ];
+    memcpy( start, str, len+1 );
+    end = start + len;
+    this->flags = flags | NEEDS_DELETE;
+}
+
+
+char* StrPair::ParseText( char* p, const char* endTag, int strFlags )
+{
+    TIXMLASSERT( endTag && *endTag );
+
+    char* start = p;    // fixme: hides a member
+    char  endChar = *endTag;
+    size_t length = strlen( endTag );
+
+    // Inner loop of text parsing.
+    while ( *p ) {
+        if ( *p == endChar && strncmp( p, endTag, length ) == 0 ) {
+            Set( start, p, strFlags );
+            return p + length;
+        }
+        ++p;
+    }    
+    return 0;
+}
+
+
+char* StrPair::ParseName( char* p )
+{
+    char* start = p;
+
+    if ( !start || !(*start) ) {
+        return 0;
+    }
+
+    if ( !XMLUtil::IsAlpha( *p ) ) {
+        return 0;
+    }
+
+    while( *p && (
+               XMLUtil::IsAlphaNum( (unsigned char) *p ) 
+            || *p == '_'
+            || *p == '-'
+            || *p == '.'
+            || *p == ':' ))
+    {
+        ++p;
+    }
+
+    if ( p > start ) {
+        Set( start, p, 0 );
+        return p;
+    }
+    return 0;
+}
+
+
+
+const char* StrPair::GetStr()
+{
+    if ( flags & NEEDS_FLUSH ) {
+        *end = 0;
+        flags ^= NEEDS_FLUSH;
+
+        if ( flags ) {
+            char* p = start;    // the read pointer
+            char* q = start;    // the write pointer
+
+            while( p < end ) {
+                if ( (flags & NEEDS_NEWLINE_NORMALIZATION) && *p == CR ) {
+                    // CR-LF pair becomes LF
+                    // CR alone becomes LF
+                    // LF-CR becomes LF
+                    if ( *(p+1) == LF ) {
+                        p += 2;
+                    }
+                    else {
+                        ++p;
+                    }
+                    *q++ = LF;
+                }
+                else if ( (flags & NEEDS_NEWLINE_NORMALIZATION) && *p == LF ) {
+                    if ( *(p+1) == CR ) {
+                        p += 2;
+                    }
+                    else {
+                        ++p;
+                    }
+                    *q++ = LF;
+                }
+                else if ( (flags & NEEDS_ENTITY_PROCESSING) && *p == '&' ) {
+                    // Entities handled by tinyXML2:
+                    // - special entities in the entity table [in/out]
+                    // - numeric character reference [in]
+                    //   &#20013; or &#x4e2d;
+
+                    if ( *(p+1) == '#' ) {
+                        char buf[10] = { 0 };
+                        int len;
+                        p = const_cast<char*>( XMLUtil::GetCharacterRef( p, buf, &len ) );
+                        for( int i=0; i<len; ++i ) {
+                            *q++ = buf[i];
+                        }
+                        TIXMLASSERT( q <= p );
+                    }
+                    else {
+                        int i=0;
+                        for(; i<NUM_ENTITIES; ++i ) {
+                            if (    strncmp( p+1, entities[i].pattern, entities[i].length ) == 0
+                                 && *(p+entities[i].length+1) == ';' ) 
+                            {
+                                // Found an entity convert;
+                                *q = entities[i].value;
+                                ++q;
+                                p += entities[i].length + 2;
+                                break;
+                            }
+                        }
+                        if ( i == NUM_ENTITIES ) {
+                            // fixme: treat as error?
+                            ++p;
+                            ++q;
+                        }
+                    }
+                }
+                else {
+                    *q = *p;
+                    ++p;
+                    ++q;
+                }
+            }
+            *q = 0;
+        }
+        flags = (flags & NEEDS_DELETE);
+    }
+    return start;
+}
+
+
+
+
+// --------- XMLUtil ----------- //
+
+const char* XMLUtil::ReadBOM( const char* p, bool* bom )
+{
+    *bom = false;
+    const unsigned char* pu = reinterpret_cast<const unsigned char*>(p);
+    // Check for BOM:
+    if (    *(pu+0) == TIXML_UTF_LEAD_0 
+         && *(pu+1) == TIXML_UTF_LEAD_1
+         && *(pu+2) == TIXML_UTF_LEAD_2 ) 
+    {
+        *bom = true;
+        p += 3;
+    }
+    return p;
+}
+
+
+void XMLUtil::ConvertUTF32ToUTF8( unsigned long input, char* output, int* length )
+{
+    const unsigned long BYTE_MASK = 0xBF;
+    const unsigned long BYTE_MARK = 0x80;
+    const unsigned long FIRST_BYTE_MARK[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+
+    if (input < 0x80) 
+        *length = 1;
+    else if ( input < 0x800 )
+        *length = 2;
+    else if ( input < 0x10000 )
+        *length = 3;
+    else if ( input < 0x200000 )
+        *length = 4;
+    else
+        { *length = 0; return; }    // This code won't covert this correctly anyway.
+
+    output += *length;
+
+    // Scary scary fall throughs.
+    switch (*length) 
+    {
+        case 4:
+            --output; 
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK); 
+            input >>= 6;
+        case 3:
+            --output; 
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK); 
+            input >>= 6;
+        case 2:
+            --output; 
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK); 
+            input >>= 6;
+        case 1:
+            --output; 
+            *output = (char)(input | FIRST_BYTE_MARK[*length]);
+    }
+}
+
+
+const char* XMLUtil::GetCharacterRef( const char* p, char* value, int* length )
+{
+    // Presume an entity, and pull it out.
+    *length = 0;
+
+    if ( *(p+1) == '#' && *(p+2) )
+    {
+        unsigned long ucs = 0;
+        ptrdiff_t delta = 0;
+        unsigned mult = 1;
+
+        if ( *(p+2) == 'x' )
+        {
+            // Hexadecimal.
+            if ( !*(p+3) ) return 0;
+
+            const char* q = p+3;
+            q = strchr( q, ';' );
+
+            if ( !q || !*q ) return 0;
+
+            delta = q-p;
+            --q;
+
+            while ( *q != 'x' )
+            {
+                if ( *q >= '0' && *q <= '9' )
+                    ucs += mult * (*q - '0');
+                else if ( *q >= 'a' && *q <= 'f' )
+                    ucs += mult * (*q - 'a' + 10);
+                else if ( *q >= 'A' && *q <= 'F' )
+                    ucs += mult * (*q - 'A' + 10 );
+                else 
+                    return 0;
+                mult *= 16;
+                --q;
+            }
+        }
+        else
+        {
+            // Decimal.
+            if ( !*(p+2) ) return 0;
+
+            const char* q = p+2;
+            q = strchr( q, ';' );
+
+            if ( !q || !*q ) return 0;
+
+            delta = q-p;
+            --q;
+
+            while ( *q != '#' )
+            {
+                if ( *q >= '0' && *q <= '9' )
+                    ucs += mult * (*q - '0');
+                else 
+                    return 0;
+                mult *= 10;
+                --q;
+            }
+        }
+        // convert the UCS to UTF-8
+        ConvertUTF32ToUTF8( ucs, value, length );
+        return p + delta + 1;
+    }
+    return p+1;
+}
+
+
+void XMLUtil::ToStr( int v, char* buffer, int bufferSize ) 
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%d", v );    
+}
+
+
+void XMLUtil::ToStr( unsigned v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%u", v );    
+}
+
+
+void XMLUtil::ToStr( bool v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%d", v ? 1 : 0 );    
+}
+
+
+void XMLUtil::ToStr( float v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%f", v );    
+}
+
+
+void XMLUtil::ToStr( double v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%f", v );    
+}
+
+
+bool XMLUtil::ToInt( const char* str, int* value )
+{
+    if ( TIXML_SSCANF( str, "%d", value ) == 1 )
+        return true;
+    return false;
+}
+
+bool XMLUtil::ToUnsigned( const char* str, unsigned *value )
+{
+    if ( TIXML_SSCANF( str, "%u", value ) == 1 )
+        return true;
+    return false;
+}
+
+bool XMLUtil::ToBool( const char* str, bool* value )
+{
+    int ival = 0;
+    if ( ToInt( str, &ival )) {
+        *value = (ival==0) ? false : true;
+        return true;
+    }
+    if ( StringEqual( str, "true" ) ) {
+        *value = true;
+        return true;
+    }
+    else if ( StringEqual( str, "false" ) ) {
+        *value = false;
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLUtil::ToFloat( const char* str, float* value )
+{
+    if ( TIXML_SSCANF( str, "%f", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+bool XMLUtil::ToDouble( const char* str, double* value )
+{
+    if ( TIXML_SSCANF( str, "%lf", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+
+char* XMLDocument::Identify( char* p, XMLNode** node ) 
+{
+    XMLNode* returnNode = 0;
+    char* start = p;
+    p = XMLUtil::SkipWhiteSpace( p );
+    if( !p || !*p )
+    {
+        return p;
+    }
+
+    // What is this thing? 
+    // - Elements start with a letter or underscore, but xml is reserved.
+    // - Comments: <!--
+    // - Decleration: <?
+    // - Everthing else is unknown to tinyxml.
+    //
+
+    static const char* xmlHeader        = { "<?" };
+    static const char* commentHeader    = { "<!--" };
+    static const char* dtdHeader        = { "<!" };
+    static const char* cdataHeader        = { "<![CDATA[" };
+    static const char* elementHeader    = { "<" };    // and a header for everything else; check last.
+
+    static const int xmlHeaderLen        = 2;
+    static const int commentHeaderLen    = 4;
+    static const int dtdHeaderLen        = 2;
+    static const int cdataHeaderLen        = 9;
+    static const int elementHeaderLen    = 1;
+
+#if defined(_MSC_VER)
+#pragma warning ( push )
+#pragma warning ( disable : 4127 )
+#endif
+    TIXMLASSERT( sizeof( XMLComment ) == sizeof( XMLUnknown ) );        // use same memory pool
+    TIXMLASSERT( sizeof( XMLComment ) == sizeof( XMLDeclaration ) );    // use same memory pool
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+    if ( XMLUtil::StringEqual( p, xmlHeader, xmlHeaderLen ) ) {
+        returnNode = new (commentPool.Alloc()) XMLDeclaration( this );
+        returnNode->memPool = &commentPool;
+        p += xmlHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, commentHeader, commentHeaderLen ) ) {
+        returnNode = new (commentPool.Alloc()) XMLComment( this );
+        returnNode->memPool = &commentPool;
+        p += commentHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, cdataHeader, cdataHeaderLen ) ) {
+        XMLText* text = new (textPool.Alloc()) XMLText( this );
+        returnNode = text;
+        returnNode->memPool = &textPool;
+        p += cdataHeaderLen;
+        text->SetCData( true );
+    }
+    else if ( XMLUtil::StringEqual( p, dtdHeader, dtdHeaderLen ) ) {
+        returnNode = new (commentPool.Alloc()) XMLUnknown( this );
+        returnNode->memPool = &commentPool;
+        p += dtdHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, elementHeader, elementHeaderLen ) ) {
+        returnNode = new (elementPool.Alloc()) XMLElement( this );
+        returnNode->memPool = &elementPool;
+        p += elementHeaderLen;
+    }
+    else {
+        returnNode = new (textPool.Alloc()) XMLText( this );
+        returnNode->memPool = &textPool;
+        p = start;    // Back it up, all the text counts.
+    }
+
+    *node = returnNode;
+    return p;
+}
+
+
+bool XMLDocument::Accept( XMLVisitor* visitor ) const
+{
+    if ( visitor->VisitEnter( *this ) )
+    {
+        for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() )
+        {
+            if ( !node->Accept( visitor ) )
+                break;
+        }
+    }
+    return visitor->VisitExit( *this );
+}
+
+
+// --------- XMLNode ----------- //
+
+XMLNode::XMLNode( XMLDocument* doc ) :
+    document( doc ),
+    parent( 0 ),
+    firstChild( 0 ), lastChild( 0 ),
+    prev( 0 ), next( 0 )
+{
+}
+
+
+XMLNode::~XMLNode()
+{
+    DeleteChildren();
+    if ( parent ) {
+        parent->Unlink( this );
+    }
+}
+
+
+void XMLNode::SetValue( const char* str, bool staticMem )
+{
+    if ( staticMem )
+        value.SetInternedStr( str );
+    else
+        value.SetStr( str );
+}
+
+
+void XMLNode::DeleteChildren()
+{
+    while( firstChild ) {
+        XMLNode* node = firstChild;
+        Unlink( node );
+        
+        DELETE_NODE( node );
+    }
+    firstChild = lastChild = 0;
+}
+
+
+void XMLNode::Unlink( XMLNode* child )
+{
+    TIXMLASSERT( child->parent == this );
+    if ( child == firstChild ) 
+        firstChild = firstChild->next;
+    if ( child == lastChild ) 
+        lastChild = lastChild->prev;
+
+    if ( child->prev ) {
+        child->prev->next = child->next;
+    }
+    if ( child->next ) {
+        child->next->prev = child->prev;
+    }
+    child->parent = 0;
+}
+
+
+void XMLNode::DeleteChild( XMLNode* node )
+{
+    TIXMLASSERT( node->parent == this );
+    DELETE_NODE( node );
+}
+
+
+XMLNode* XMLNode::InsertEndChild( XMLNode* addThis )
+{
+    if ( lastChild ) {
+        TIXMLASSERT( firstChild );
+        TIXMLASSERT( lastChild->next == 0 );
+        lastChild->next = addThis;
+        addThis->prev = lastChild;
+        lastChild = addThis;
+
+        addThis->next = 0;
+    }
+    else {
+        TIXMLASSERT( firstChild == 0 );
+        firstChild = lastChild = addThis;
+
+        addThis->prev = 0;
+        addThis->next = 0;
+    }
+    addThis->parent = this;
+    return addThis;
+}
+
+
+XMLNode* XMLNode::InsertFirstChild( XMLNode* addThis )
+{
+    if ( firstChild ) {
+        TIXMLASSERT( lastChild );
+        TIXMLASSERT( firstChild->prev == 0 );
+
+        firstChild->prev = addThis;
+        addThis->next = firstChild;
+        firstChild = addThis;
+
+        addThis->prev = 0;
+    }
+    else {
+        TIXMLASSERT( lastChild == 0 );
+        firstChild = lastChild = addThis;
+
+        addThis->prev = 0;
+        addThis->next = 0;
+    }
+    addThis->parent = this;
+    return addThis;
+}
+
+
+XMLNode* XMLNode::InsertAfterChild( XMLNode* afterThis, XMLNode* addThis )
+{
+    TIXMLASSERT( afterThis->parent == this );
+    if ( afterThis->parent != this )
+        return 0;
+
+    if ( afterThis->next == 0 ) {
+        // The last node or the only node.
+        return InsertEndChild( addThis );
+    }
+    addThis->prev = afterThis;
+    addThis->next = afterThis->next;
+    afterThis->next->prev = addThis;
+    afterThis->next = addThis;
+    addThis->parent = this;
+    return addThis;
+}
+
+
+
+
+const XMLElement* XMLNode::FirstChildElement( const char* value ) const
+{
+    for( XMLNode* node=firstChild; node; node=node->next ) {
+        XMLElement* element = node->ToElement();
+        if ( element ) {
+            if ( !value || XMLUtil::StringEqual( element->Name(), value ) ) {
+                return element;
+            }
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::LastChildElement( const char* value ) const
+{
+    for( XMLNode* node=lastChild; node; node=node->prev ) {
+        XMLElement* element = node->ToElement();
+        if ( element ) {
+            if ( !value || XMLUtil::StringEqual( element->Name(), value ) ) {
+                return element;
+            }
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::NextSiblingElement( const char* value ) const
+{
+    for( XMLNode* element=this->next; element; element = element->next ) {
+        if (    element->ToElement() 
+             && (!value || XMLUtil::StringEqual( value, element->Value() ))) 
+        {
+            return element->ToElement();
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::PreviousSiblingElement( const char* value ) const
+{
+    for( XMLNode* element=this->prev; element; element = element->prev ) {
+        if (    element->ToElement()
+             && (!value || XMLUtil::StringEqual( value, element->Value() ))) 
+        {
+            return element->ToElement();
+        }
+    }
+    return 0;
+}
+
+
+char* XMLNode::ParseDeep( char* p, StrPair* parentEnd )
+{
+    // This is a recursive method, but thinking about it "at the current level"
+    // it is a pretty simple flat list:
+    //        <foo/>
+    //        <!-- comment -->
+    //
+    // With a special case:
+    //        <foo>
+    //        </foo>
+    //        <!-- comment -->
+    //        
+    // Where the closing element (/foo) *must* be the next thing after the opening
+    // element, and the names must match. BUT the tricky bit is that the closing
+    // element will be read by the child.
+    // 
+    // 'endTag' is the end tag for this node, it is returned by a call to a child.
+    // 'parentEnd' is the end tag for the parent, which is filled in and returned.
+
+    while( p && *p ) {
+        XMLNode* node = 0;
+
+        p = document->Identify( p, &node );
+        if ( p == 0 || node == 0 ) {
+            break;
+        }
+
+        StrPair endTag;
+        p = node->ParseDeep( p, &endTag );
+        if ( !p ) {
+            DELETE_NODE( node );
+            node = 0;
+            if ( !document->Error() ) {
+                document->SetError( XML_ERROR_PARSING, 0, 0 );
+            }
+            break;
+        }
+
+        // We read the end tag. Return it to the parent.
+        if ( node->ToElement() && node->ToElement()->ClosingType() == XMLElement::CLOSING ) {
+            if ( parentEnd ) {
+                *parentEnd = static_cast<XMLElement*>(node)->value;
+            }
+            DELETE_NODE( node );
+            return p;
+        }
+
+        // Handle an end tag returned to this level.
+        // And handle a bunch of annoying errors.
+        XMLElement* ele = node->ToElement();
+        if ( ele ) {
+            if ( endTag.Empty() && ele->ClosingType() == XMLElement::OPEN ) {
+                document->SetError( XML_ERROR_MISMATCHED_ELEMENT, node->Value(), 0 );
+                p = 0;
+            }
+            else if ( !endTag.Empty() && ele->ClosingType() != XMLElement::OPEN ) {
+                document->SetError( XML_ERROR_MISMATCHED_ELEMENT, node->Value(), 0 );
+                p = 0;
+            }
+            else if ( !endTag.Empty() ) {
+                if ( !XMLUtil::StringEqual( endTag.GetStr(), node->Value() )) { 
+                    document->SetError( XML_ERROR_MISMATCHED_ELEMENT, node->Value(), 0 );
+                    p = 0;
+                }
+            }
+        }
+        if ( p == 0 ) {
+            DELETE_NODE( node );
+            node = 0;
+        }
+        if ( node ) {
+            this->InsertEndChild( node );
+        }
+    }
+    return 0;
+}
+
+// --------- XMLText ---------- //
+char* XMLText::ParseDeep( char* p, StrPair* )
+{
+    const char* start = p;
+    if ( this->CData() ) {
+        p = value.ParseText( p, "]]>", StrPair::NEEDS_NEWLINE_NORMALIZATION );
+        if ( !p ) {
+            document->SetError( XML_ERROR_PARSING_CDATA, start, 0 );
+        }
+        return p;
+    }
+    else {
+        p = value.ParseText( p, "<", document->ProcessEntities() ? StrPair::TEXT_ELEMENT : StrPair::TEXT_ELEMENT_LEAVE_ENTITIES );
+        if ( !p ) {
+            document->SetError( XML_ERROR_PARSING_TEXT, start, 0 );
+        }
+        if ( p && *p ) {
+            return p-1;
+        }
+    }
+    return 0;
+}
+
+
+XMLNode* XMLText::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = document;
+    }
+    XMLText* text = doc->NewText( Value() );    // fixme: this will always allocate memory. Intern?
+    text->SetCData( this->CData() );
+    return text;
+}
+
+
+bool XMLText::ShallowEqual( const XMLNode* compare ) const
+{
+    return ( compare->ToText() && XMLUtil::StringEqual( compare->ToText()->Value(), Value() ));
+}
+
+
+bool XMLText::Accept( XMLVisitor* visitor ) const
+{
+    return visitor->Visit( *this );
+}
+
+
+// --------- XMLComment ---------- //
+
+XMLComment::XMLComment( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLComment::~XMLComment()
+{
+    //printf( "~XMLComment\n" );
+}
+
+
+char* XMLComment::ParseDeep( char* p, StrPair* )
+{
+    // Comment parses as text.
+    const char* start = p;
+    p = value.ParseText( p, "-->", StrPair::COMMENT );
+    if ( p == 0 ) {
+        document->SetError( XML_ERROR_PARSING_COMMENT, start, 0 );
+    }
+    return p;
+}
+
+
+XMLNode* XMLComment::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = document;
+    }
+    XMLComment* comment = doc->NewComment( Value() );    // fixme: this will always allocate memory. Intern?
+    return comment;
+}
+
+
+bool XMLComment::ShallowEqual( const XMLNode* compare ) const
+{
+    return ( compare->ToComment() && XMLUtil::StringEqual( compare->ToComment()->Value(), Value() ));
+}
+
+
+bool XMLComment::Accept( XMLVisitor* visitor ) const
+{
+    return visitor->Visit( *this );
+}
+
+
+// --------- XMLDeclaration ---------- //
+
+XMLDeclaration::XMLDeclaration( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLDeclaration::~XMLDeclaration()
+{
+    //printf( "~XMLDeclaration\n" );
+}
+
+
+char* XMLDeclaration::ParseDeep( char* p, StrPair* )
+{
+    // Declaration parses as text.
+    const char* start = p;
+    p = value.ParseText( p, "?>", StrPair::NEEDS_NEWLINE_NORMALIZATION );
+    if ( p == 0 ) {
+        document->SetError( XML_ERROR_PARSING_DECLARATION, start, 0 );
+    }
+    return p;
+}
+
+
+XMLNode* XMLDeclaration::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = document;
+    }
+    XMLDeclaration* dec = doc->NewDeclaration( Value() );    // fixme: this will always allocate memory. Intern?
+    return dec;
+}
+
+
+bool XMLDeclaration::ShallowEqual( const XMLNode* compare ) const
+{
+    return ( compare->ToDeclaration() && XMLUtil::StringEqual( compare->ToDeclaration()->Value(), Value() ));
+}
+
+
+
+bool XMLDeclaration::Accept( XMLVisitor* visitor ) const
+{
+    return visitor->Visit( *this );
+}
+
+// --------- XMLUnknown ---------- //
+
+XMLUnknown::XMLUnknown( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLUnknown::~XMLUnknown()
+{
+}
+
+
+char* XMLUnknown::ParseDeep( char* p, StrPair* )
+{
+    // Unknown parses as text.
+    const char* start = p;
+
+    p = value.ParseText( p, ">", StrPair::NEEDS_NEWLINE_NORMALIZATION );
+    if ( !p ) {
+        document->SetError( XML_ERROR_PARSING_UNKNOWN, start, 0 );
+    }
+    return p;
+}
+
+
+XMLNode* XMLUnknown::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = document;
+    }
+    XMLUnknown* text = doc->NewUnknown( Value() );    // fixme: this will always allocate memory. Intern?
+    return text;
+}
+
+
+bool XMLUnknown::ShallowEqual( const XMLNode* compare ) const
+{
+    return ( compare->ToUnknown() && XMLUtil::StringEqual( compare->ToUnknown()->Value(), Value() ));
+}
+
+
+bool XMLUnknown::Accept( XMLVisitor* visitor ) const
+{
+    return visitor->Visit( *this );
+}
+
+// --------- XMLAttribute ---------- //
+char* XMLAttribute::ParseDeep( char* p, bool processEntities )
+{
+    // Parse using the name rules: bug fix, was using ParseText before
+    p = name.ParseName( p );
+    if ( !p || !*p ) return 0;
+
+    // Skip white space before =
+    p = XMLUtil::SkipWhiteSpace( p );
+    if ( !p || *p != '=' ) return 0;
+
+    ++p;    // move up to opening quote
+    p = XMLUtil::SkipWhiteSpace( p );
+    if ( *p != '\"' && *p != '\'' ) return 0;
+
+    char endTag[2] = { *p, 0 };
+    ++p;    // move past opening quote
+
+    p = value.ParseText( p, endTag, processEntities ? StrPair::ATTRIBUTE_VALUE : StrPair::ATTRIBUTE_VALUE_LEAVE_ENTITIES );
+    return p;
+}
+
+
+void XMLAttribute::SetName( const char* n )
+{
+    name.SetStr( n );
+}
+
+
+int XMLAttribute::QueryIntValue( int* value ) const
+{
+    if ( XMLUtil::ToInt( Value(), value ))
+        return XML_NO_ERROR;
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+int XMLAttribute::QueryUnsignedValue( unsigned int* value ) const
+{
+    if ( XMLUtil::ToUnsigned( Value(), value ))
+        return XML_NO_ERROR;
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+int XMLAttribute::QueryBoolValue( bool* value ) const
+{
+    if ( XMLUtil::ToBool( Value(), value )) {
+        return XML_NO_ERROR;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+int XMLAttribute::QueryFloatValue( float* value ) const
+{
+    if ( XMLUtil::ToFloat( Value(), value ))
+        return XML_NO_ERROR;
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+int XMLAttribute::QueryDoubleValue( double* value ) const
+{
+    if ( XMLUtil::ToDouble( Value(), value ))
+        return XML_NO_ERROR;
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+void XMLAttribute::SetAttribute( const char* v )
+{
+    value.SetStr( v );
+}
+
+
+void XMLAttribute::SetAttribute( int v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    value.SetStr( buf );
+}
+
+
+void XMLAttribute::SetAttribute( unsigned v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    value.SetStr( buf );
+}
+
+
+void XMLAttribute::SetAttribute( bool v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    value.SetStr( buf );
+}
+
+void XMLAttribute::SetAttribute( double v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    value.SetStr( buf );
+}
+
+void XMLAttribute::SetAttribute( float v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    value.SetStr( buf );
+}
+
+
+// --------- XMLElement ---------- //
+XMLElement::XMLElement( XMLDocument* doc ) : XMLNode( doc ),
+    closingType( 0 ),
+    rootAttribute( 0 )
+{
+}
+
+
+XMLElement::~XMLElement()
+{
+    while( rootAttribute ) {
+        XMLAttribute* next = rootAttribute->next;
+        DELETE_ATTRIBUTE( rootAttribute );
+        rootAttribute = next;
+    }
+}
+
+
+XMLAttribute* XMLElement::FindAttribute( const char* name )
+{
+    XMLAttribute* a = 0;
+    for( a=rootAttribute; a; a = a->next ) {
+        if ( XMLUtil::StringEqual( a->Name(), name ) )
+            return a;
+    }
+    return 0;
+}
+
+
+const XMLAttribute* XMLElement::FindAttribute( const char* name ) const
+{
+    XMLAttribute* a = 0;
+    for( a=rootAttribute; a; a = a->next ) {
+        if ( XMLUtil::StringEqual( a->Name(), name ) )
+            return a;
+    }
+    return 0;
+}
+
+
+const char* XMLElement::Attribute( const char* name, const char* value ) const
+{ 
+    const XMLAttribute* a = FindAttribute( name ); 
+    if ( !a ) 
+        return 0; 
+    if ( !value || XMLUtil::StringEqual( a->Value(), value ))
+        return a->Value();
+    return 0;
+}
+
+
+const char* XMLElement::GetText() const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        return FirstChild()->ToText()->Value();
+    }
+    return 0;
+}
+
+
+int XMLElement::QueryIntText( int* _value ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->ToText()->Value();
+        if ( XMLUtil::ToInt( t, _value ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+int XMLElement::QueryUnsignedText( unsigned* _value ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->ToText()->Value();
+        if ( XMLUtil::ToUnsigned( t, _value ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+int XMLElement::QueryBoolText( bool* _value ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->ToText()->Value();
+        if ( XMLUtil::ToBool( t, _value ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+int XMLElement::QueryDoubleText( double* _value ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->ToText()->Value();
+        if ( XMLUtil::ToDouble( t, _value ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+int XMLElement::QueryFloatText( float* _value ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->ToText()->Value();
+        if ( XMLUtil::ToFloat( t, _value ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+
+XMLAttribute* XMLElement::FindOrCreateAttribute( const char* name )
+{
+    XMLAttribute* last = 0;
+    XMLAttribute* attrib = 0;
+    for( attrib = rootAttribute;
+         attrib;
+         last = attrib, attrib = attrib->next )
+    {         
+        if ( XMLUtil::StringEqual( attrib->Name(), name ) ) {
+            break;
+        }
+    }
+    if ( !attrib ) {
+        attrib = new (document->attributePool.Alloc() ) XMLAttribute();
+        attrib->memPool = &document->attributePool;
+        if ( last ) {
+            last->next = attrib;
+        }
+        else {
+            rootAttribute = attrib;
+        }
+        attrib->SetName( name );
+    }
+    return attrib;
+}
+
+
+void XMLElement::DeleteAttribute( const char* name )
+{
+    XMLAttribute* prev = 0;
+    for( XMLAttribute* a=rootAttribute; a; a=a->next ) {
+        if ( XMLUtil::StringEqual( name, a->Name() ) ) {
+            if ( prev ) {
+                prev->next = a->next;
+            }
+            else {
+                rootAttribute = a->next;
+            }
+            DELETE_ATTRIBUTE( a );
+            break;
+        }
+        prev = a;
+    }
+}
+
+
+char* XMLElement::ParseAttributes( char* p )
+{
+    const char* start = p;
+    XMLAttribute* prevAttribute = 0;
+
+    // Read the attributes.
+    while( p ) {
+        p = XMLUtil::SkipWhiteSpace( p );
+        if ( !p || !(*p) ) {
+            document->SetError( XML_ERROR_PARSING_ELEMENT, start, Name() );
+            return 0;
+        }
+
+        // attribute.
+        if ( XMLUtil::IsAlpha( *p ) ) {
+            XMLAttribute* attrib = new (document->attributePool.Alloc() ) XMLAttribute();
+            attrib->memPool = &document->attributePool;
+
+            p = attrib->ParseDeep( p, document->ProcessEntities() );
+            if ( !p || Attribute( attrib->Name() ) ) {
+                DELETE_ATTRIBUTE( attrib );
+                document->SetError( XML_ERROR_PARSING_ATTRIBUTE, start, p );
+                return 0;
+            }
+            // There is a minor bug here: if the attribute in the source xml
+            // document is duplicated, it will not be detected and the
+            // attribute will be doubly added. However, tracking the 'prevAttribute'
+            // avoids re-scanning the attribute list. Preferring performance for
+            // now, may reconsider in the future.
+            if ( prevAttribute ) { 
+                prevAttribute->next = attrib;
+            }
+            else {
+                rootAttribute = attrib;
+            }    
+            prevAttribute = attrib;
+        }
+        // end of the tag
+        else if ( *p == '/' && *(p+1) == '>' ) {
+            closingType = CLOSED;
+            return p+2;    // done; sealed element.
+        }
+        // end of the tag
+        else if ( *p == '>' ) {
+            ++p;
+            break;
+        }
+        else {
+            document->SetError( XML_ERROR_PARSING_ELEMENT, start, p );
+            return 0;
+        }
+    }
+    return p;
+}
+
+
+//
+//    <ele></ele>
+//    <ele>foo<b>bar</b></ele>
+//
+char* XMLElement::ParseDeep( char* p, StrPair* strPair )
+{
+    // Read the element name.
+    p = XMLUtil::SkipWhiteSpace( p );
+    if ( !p ) return 0;
+
+    // The closing element is the </element> form. It is
+    // parsed just like a regular element then deleted from
+    // the DOM.
+    if ( *p == '/' ) {
+        closingType = CLOSING;
+        ++p;
+    }
+
+    p = value.ParseName( p );
+    if ( value.Empty() ) return 0;
+
+    p = ParseAttributes( p );
+    if ( !p || !*p || closingType ) 
+        return p;
+
+    p = XMLNode::ParseDeep( p, strPair );
+    return p;
+}
+
+
+
+XMLNode* XMLElement::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = document;
+    }
+    XMLElement* element = doc->NewElement( Value() );                    // fixme: this will always allocate memory. Intern?
+    for( const XMLAttribute* a=FirstAttribute(); a; a=a->Next() ) {
+        element->SetAttribute( a->Name(), a->Value() );                    // fixme: this will always allocate memory. Intern?
+    }
+    return element;
+}
+
+
+bool XMLElement::ShallowEqual( const XMLNode* compare ) const
+{
+    const XMLElement* other = compare->ToElement();
+    if ( other && XMLUtil::StringEqual( other->Value(), Value() )) {
+
+        const XMLAttribute* a=FirstAttribute();
+        const XMLAttribute* b=other->FirstAttribute();
+
+        while ( a && b ) {
+            if ( !XMLUtil::StringEqual( a->Value(), b->Value() ) ) {
+                return false;
+            }
+            a = a->Next();
+            b = b->Next();
+        }    
+        if ( a || b ) {
+            // different count
+            return false;
+        }
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLElement::Accept( XMLVisitor* visitor ) const
+{
+    if ( visitor->VisitEnter( *this, rootAttribute ) ) 
+    {
+        for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() )
+        {
+            if ( !node->Accept( visitor ) )
+                break;
+        }
+    }
+    return visitor->VisitExit( *this );
+}
+
+
+// --------- XMLDocument ----------- //
+XMLDocument::XMLDocument( bool _processEntities ) :
+    XMLNode( 0 ),
+    writeBOM( false ),
+    processEntities( _processEntities ),
+    errorID( 0 ),
+    errorStr1( 0 ),
+    errorStr2( 0 ),
+    charBuffer( 0 )
+{
+    document = this;    // avoid warning about 'this' in initializer list
+}
+
+
+XMLDocument::~XMLDocument()
+{
+    DeleteChildren();
+    delete [] charBuffer;
+
+#if 0
+    textPool.Trace( "text" );
+    elementPool.Trace( "element" );
+    commentPool.Trace( "comment" );
+    attributePool.Trace( "attribute" );
+#endif
+
+    TIXMLASSERT( textPool.CurrentAllocs() == 0 );
+    TIXMLASSERT( elementPool.CurrentAllocs() == 0 );
+    TIXMLASSERT( commentPool.CurrentAllocs() == 0 );
+    TIXMLASSERT( attributePool.CurrentAllocs() == 0 );
+}
+
+
+void XMLDocument::InitDocument()
+{
+    errorID = XML_NO_ERROR;
+    errorStr1 = 0;
+    errorStr2 = 0;
+
+    delete [] charBuffer;
+    charBuffer = 0;
+
+}
+
+
+XMLElement* XMLDocument::NewElement( const char* name )
+{
+    XMLElement* ele = new (elementPool.Alloc()) XMLElement( this );
+    ele->memPool = &elementPool;
+    ele->SetName( name );
+    return ele;
+}
+
+
+XMLComment* XMLDocument::NewComment( const char* str )
+{
+    XMLComment* comment = new (commentPool.Alloc()) XMLComment( this );
+    comment->memPool = &commentPool;
+    comment->SetValue( str );
+    return comment;
+}
+
+
+XMLText* XMLDocument::NewText( const char* str )
+{
+    XMLText* text = new (textPool.Alloc()) XMLText( this );
+    text->memPool = &textPool;
+    text->SetValue( str );
+    return text;
+}
+
+
+XMLDeclaration* XMLDocument::NewDeclaration( const char* str )
+{
+    XMLDeclaration* dec = new (commentPool.Alloc()) XMLDeclaration( this );
+    dec->memPool = &commentPool;
+    dec->SetValue( str ? str : "xml version=\"1.0\" encoding=\"UTF-8\"" );
+    return dec;
+}
+
+
+XMLUnknown* XMLDocument::NewUnknown( const char* str )
+{
+    XMLUnknown* unk = new (commentPool.Alloc()) XMLUnknown( this );
+    unk->memPool = &commentPool;
+    unk->SetValue( str );
+    return unk;
+}
+
+
+int XMLDocument::LoadFile( const char* filename )
+{
+    DeleteChildren();
+    InitDocument();
+
+#if defined(_MSC_VER)
+#pragma warning ( push )
+#pragma warning ( disable : 4996 )        // Fail to see a compelling reason why this should be deprecated.
+#endif
+    FILE* fp = fopen( filename, "rb" );
+#if defined(_MSC_VER)
+#pragma warning ( pop )
+#endif
+    if ( !fp ) {
+        SetError( XML_ERROR_FILE_NOT_FOUND, filename, 0 );
+        return errorID;
+    }
+    LoadFile( fp );
+    fclose( fp );
+    return errorID;
+}
+
+
+int XMLDocument::LoadFile( FILE* fp ) 
+{
+    DeleteChildren();
+    InitDocument();
+
+    fseek( fp, 0, SEEK_END );
+    unsigned size = ftell( fp );
+    fseek( fp, 0, SEEK_SET );
+
+    if ( size == 0 ) {
+        return errorID;
+    }
+
+    charBuffer = new char[size+1];
+    size_t read = fread( charBuffer, 1, size, fp );
+    if ( read != size ) {
+        SetError( XML_ERROR_FILE_READ_ERROR, 0, 0 );
+        return errorID;
+    }
+    
+    charBuffer[size] = 0;
+
+    const char* p = charBuffer;
+    p = XMLUtil::SkipWhiteSpace( p );
+    p = XMLUtil::ReadBOM( p, &writeBOM );
+    if ( !p || !*p ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
+        return errorID;
+    }
+
+    ParseDeep( charBuffer + (p-charBuffer), 0 );
+    return errorID;
+}
+
+
+int XMLDocument::SaveFile( const char* filename )
+{
+#if defined(_MSC_VER)
+#pragma warning ( push )
+#pragma warning ( disable : 4996 )        // Fail to see a compelling reason why this should be deprecated.
+#endif
+    FILE* fp = fopen( filename, "w" );
+#if defined(_MSC_VER)
+#pragma warning ( pop )
+#endif
+    if ( !fp ) {
+        SetError( XML_ERROR_FILE_COULD_NOT_BE_OPENED, filename, 0 );
+        return errorID;
+    }
+    SaveFile(fp);
+    fclose( fp );
+    return errorID;
+}
+
+
+int XMLDocument::SaveFile( FILE* fp )
+{
+    XMLPrinter stream( fp );
+    Print( &stream );
+    return errorID;
+}
+
+
+int XMLDocument::Parse( const char* p )
+{
+    DeleteChildren();
+    InitDocument();
+
+    if ( !p || !*p ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
+        return errorID;
+    }
+    p = XMLUtil::SkipWhiteSpace( p );
+    p = XMLUtil::ReadBOM( p, &writeBOM );
+    if ( !p || !*p ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
+        return errorID;
+    }
+
+    size_t len = strlen( p );
+    charBuffer = new char[ len+1 ];
+    memcpy( charBuffer, p, len+1 );
+
+    
+    ParseDeep( charBuffer, 0 );
+    return errorID;
+}
+
+
+void XMLDocument::Print( XMLPrinter* streamer ) 
+{
+    XMLPrinter stdStreamer( stdout );
+    if ( !streamer )
+        streamer = &stdStreamer;
+    Accept( streamer );
+}
+
+
+void XMLDocument::SetError( int error, const char* str1, const char* str2 )
+{
+    errorID = error;
+    errorStr1 = str1;
+    errorStr2 = str2;
+}
+
+
+void XMLDocument::PrintError() const 
+{
+    if ( errorID ) {
+        static const int LEN = 20;
+        char buf1[LEN] = { 0 };
+        char buf2[LEN] = { 0 };
+        
+        if ( errorStr1 ) {
+            TIXML_SNPRINTF( buf1, LEN, "%s", errorStr1 );
+        }
+        if ( errorStr2 ) {
+            TIXML_SNPRINTF( buf2, LEN, "%s", errorStr2 );
+        }
+
+        printf( "XMLDocument error id=%d str1=%s str2=%s\n",
+                errorID, buf1, buf2 );
+    }
+}
+
+
+XMLPrinter::XMLPrinter( FILE* file, bool compact ) : 
+    elementJustOpened( false ), 
+    firstElement( true ),
+    fp( file ), 
+    depth( 0 ), 
+    textDepth( -1 ),
+    processEntities( true ),
+    compactMode( compact )
+{
+    for( int i=0; i<ENTITY_RANGE; ++i ) {
+        entityFlag[i] = false;
+        restrictedEntityFlag[i] = false;
+    }
+    for( int i=0; i<NUM_ENTITIES; ++i ) {
+        TIXMLASSERT( entities[i].value < ENTITY_RANGE );
+        if ( entities[i].value < ENTITY_RANGE ) {
+            entityFlag[ (int)entities[i].value ] = true;
+        }
+    }
+    restrictedEntityFlag[(int)'&'] = true;
+    restrictedEntityFlag[(int)'<'] = true;
+    restrictedEntityFlag[(int)'>'] = true;    // not required, but consistency is nice
+    buffer.Push( 0 );
+}
+
+
+void XMLPrinter::Print( const char* format, ... )
+{
+    va_list     va;
+    va_start( va, format );
+
+    if ( fp ) {
+        vfprintf( fp, format, va );
+    }
+    else {
+        // This seems brutally complex. Haven't figured out a better
+        // way on windows.
+        #ifdef _MSC_VER
+            int len = -1;
+            int expand = 1000;
+            while ( len < 0 ) {
+                len = vsnprintf_s( accumulator.Mem(), accumulator.Capacity(), _TRUNCATE, format, va );
+                if ( len < 0 ) {
+                    expand *= 3/2;
+                    accumulator.PushArr( expand );
+                }
+            }
+            char* p = buffer.PushArr( len ) - 1;
+            memcpy( p, accumulator.Mem(), len+1 );
+        #else
+            int len = vsnprintf( 0, 0, format, va );
+            // Close out and re-start the va-args
+            va_end( va );
+            va_start( va, format );        
+            char* p = buffer.PushArr( len ) - 1;
+            vsnprintf( p, len+1, format, va );
+        #endif
+    }
+    va_end( va );
+}
+
+
+void XMLPrinter::PrintSpace( int depth )
+{
+    for( int i=0; i<depth; ++i ) {
+        Print( "    " );
+    }
+}
+
+
+void XMLPrinter::PrintString( const char* p, bool restricted )
+{
+    // Look for runs of bytes between entities to print.
+    const char* q = p;
+    const bool* flag = restricted ? restrictedEntityFlag : entityFlag;
+
+    if ( processEntities ) {
+        while ( *q ) {
+            // Remember, char is sometimes signed. (How many times has that bitten me?)
+            if ( *q > 0 && *q < ENTITY_RANGE ) {
+                // Check for entities. If one is found, flush
+                // the stream up until the entity, write the 
+                // entity, and keep looking.
+                if ( flag[(unsigned)(*q)] ) {
+                    while ( p < q ) {
+                        Print( "%c", *p );
+                        ++p;
+                    }
+                    for( int i=0; i<NUM_ENTITIES; ++i ) {
+                        if ( entities[i].value == *q ) {
+                            Print( "&%s;", entities[i].pattern );
+                            break;
+                        }
+                    }
+                    ++p;
+                }
+            }
+            ++q;
+        }
+    }
+    // Flush the remaining string. This will be the entire
+    // string if an entity wasn't found.
+    if ( !processEntities || (q-p > 0) ) {
+        Print( "%s", p );
+    }
+}
+
+
+void XMLPrinter::PushHeader( bool writeBOM, bool writeDec )
+{
+    static const unsigned char bom[] = { TIXML_UTF_LEAD_0, TIXML_UTF_LEAD_1, TIXML_UTF_LEAD_2, 0 };
+    if ( writeBOM ) {
+        Print( "%s", bom );
+    }
+    if ( writeDec ) {
+        PushDeclaration( "xml version=\"1.0\"" );
+    }
+}
+
+
+void XMLPrinter::OpenElement( const char* name )
+{
+    if ( elementJustOpened ) {
+        SealElement();
+    }
+    stack.Push( name );
+
+    if ( textDepth < 0 && !firstElement && !compactMode ) {
+        Print( "\n" );
+        PrintSpace( depth );
+    }
+
+    Print( "<%s", name );
+    elementJustOpened = true;
+    firstElement = false;
+    ++depth;
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, const char* value )
+{
+    TIXMLASSERT( elementJustOpened );
+    Print( " %s=\"", name );
+    PrintString( value, false );
+    Print( "\"" );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, int v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, unsigned v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, bool v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, double v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::CloseElement()
+{
+    --depth;
+    const char* name = stack.Pop();
+
+    if ( elementJustOpened ) {
+        Print( "/>" );
+    }
+    else {
+        if ( textDepth < 0 && !compactMode) {
+            Print( "\n" );
+            PrintSpace( depth );
+        }
+        Print( "</%s>", name );
+    }
+
+    if ( textDepth == depth )
+        textDepth = -1;
+    if ( depth == 0 && !compactMode)
+        Print( "\n" );
+    elementJustOpened = false;
+}
+
+
+void XMLPrinter::SealElement()
+{
+    elementJustOpened = false;
+    Print( ">" );
+}
+
+
+void XMLPrinter::PushText( const char* text, bool cdata )
+{
+    textDepth = depth-1;
+
+    if ( elementJustOpened ) {
+        SealElement();
+    }
+    if ( cdata ) {
+        Print( "<![CDATA[" );
+        Print( "%s", text );
+        Print( "]]>" );
+    }
+    else {
+        PrintString( text, true );
+    }
+}
+
+void XMLPrinter::PushText( int value ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( unsigned value ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( bool value ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( float value ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( double value ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushComment( const char* comment )
+{
+    if ( elementJustOpened ) {
+        SealElement();
+    }
+    if ( textDepth < 0 && !firstElement && !compactMode) {
+        Print( "\n" );
+        PrintSpace( depth );
+    }
+    firstElement = false;
+    Print( "<!--%s-->", comment );
+}
+
+
+void XMLPrinter::PushDeclaration( const char* value )
+{
+    if ( elementJustOpened ) {
+        SealElement();
+    }
+    if ( textDepth < 0 && !firstElement && !compactMode) {
+        Print( "\n" );
+        PrintSpace( depth );
+    }
+    firstElement = false;
+    Print( "<?%s?>", value );
+}
+
+
+void XMLPrinter::PushUnknown( const char* value )
+{
+    if ( elementJustOpened ) {
+        SealElement();
+    }
+    if ( textDepth < 0 && !firstElement && !compactMode) {
+        Print( "\n" );
+        PrintSpace( depth );
+    }
+    firstElement = false;
+    Print( "<!%s>", value );
+}
+
+
+bool XMLPrinter::VisitEnter( const XMLDocument& doc )
+{
+    processEntities = doc.ProcessEntities();
+    if ( doc.HasBOM() ) {
+        PushHeader( true, false );
+    }
+    return true;
+}
+
+
+bool XMLPrinter::VisitEnter( const XMLElement& element, const XMLAttribute* attribute )
+{
+    OpenElement( element.Name() );
+    while ( attribute ) {
+        PushAttribute( attribute->Name(), attribute->Value() );
+        attribute = attribute->Next();
+    }
+    return true;
+}
+
+
+bool XMLPrinter::VisitExit( const XMLElement& )
+{
+    CloseElement();
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLText& text )
+{
+    PushText( text.Value(), text.CData() );
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLComment& comment )
+{
+    PushComment( comment.Value() );
+    return true;
+}
+
+bool XMLPrinter::Visit( const XMLDeclaration& declaration )
+{
+    PushDeclaration( declaration.Value() );
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLUnknown& unknown )
+{
+    PushUnknown( unknown.Value() );
+    return true;
+}