Method Identify

CrossApp/support/tinyxml2/tinyxml2.cpp:495–567

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;