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

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

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

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

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

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

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

//#define DEBUG_PARSER

// Note tha "PutString" hardcodes the same list. This
// is less flexible than it appears. Changing the entries
// or order will break putstring.	
TiXmlBaseA::Entity TiXmlBaseA::entity[ NUM_ENTITY ] = 
{
	{ "&amp;",  5, '&' },
	{ "&lt;",   4, '<' },
	{ "&gt;",   4, '>' },
	{ "&quot;", 6, '\"' },
	{ "&apos;", 6, '\'' }
};


class TiXmlParsingDataA
{
	friend class TiXmlDocumentA;
  public:
	//TiXmlParsingDataA( const char* now, const TiXmlParsingDataA* prevData );
	void Stamp( const char* now );

	const TiXmlCursorA& Cursor()	{ return cursor; }
	//void Update( const char* now );

  private:
	// Only used by the document!
	TiXmlParsingDataA( const char* start, int _tabsize, int row, int col )
	{
		assert( start );
		stamp = start;
		tabsize = _tabsize;
		cursor.row = row;
		cursor.col = col;
	}

	TiXmlCursorA		cursor;
	const char*		stamp;
	int				tabsize;
};


void TiXmlParsingDataA::Stamp( const char* now )
{
	assert( now );

	// Do nothing if the tabsize is 0.
	if ( tabsize < 1 )
	{
		return;
	}

	// Get the current row, column.
	int row = cursor.row;
	int col = cursor.col;
	const char* p = stamp;
	assert( p );

	while ( p < now )
	{
		// Code contributed by Fletcher Dunn: (modified by lee)
		switch (*p) {
			case 0:
				// We *should* never get here, but in case we do, don't
				// advance past the terminating null character, ever
				return;

			case '\r':
				// bump down to the next line
				++row;
				col = 0;				
				// Eat the character
				++p;

				// Check for \r\n sequence, and treat this as a single character
				if (*p == '\n') {
					++p;
				}
				break;

			case '\n':
				// bump down to the next line
				++row;
				col = 0;

				// Eat the character
				++p;

				// Check for \n\r sequence, and treat this as a single
				// character.  (Yes, this bizarre thing does occur still
				// on some arcane platforms...)
				if (*p == '\r') {
					++p;
				}
				break;

			case '\t':
				// Eat the character
				++p;

				// Skip to next tab stop
				col = (col / tabsize + 1) * tabsize;
				break;

			default:
				// Eat the character
				++p;

				// Normal char - just advance one column
				++col;
				break;
		}
	}
	cursor.row = row;
	cursor.col = col;
	assert( cursor.row >= -1 );
	assert( cursor.col >= -1 );
	stamp = p;
	assert( stamp );
}


const char* TiXmlBaseA::SkipWhiteSpace( const char* p )
{
	if ( !p || !*p )
	{
		return 0;
	}
	while ( p && *p )
	{
		if ( isspace( *p ) || *p == '\n' || *p =='\r' )		// Still using old rules for white space.
			++p;
		else
			break;
	}

	return p;
}

#ifdef TIXMLA_USE_STL
/*static*/ bool TiXmlBaseA::StreamWhiteSpace( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	for( ;; )
	{
		if ( !in->good() ) return false;

		int c = in->peek();
		if ( !IsWhiteSpace( c ) )
			return true;
		*tag += in->get();
	}
}

/*static*/ bool TiXmlBaseA::StreamTo( TIXMLA_ISTREAM * in, int character, TIXMLA_STRING * tag )
{
	while ( in->good() )
	{
		int c = in->peek();
		if ( c == character )
			return true;

		in->get();
		*tag += c;
	}
	return false;
}
#endif

const char* TiXmlBaseA::ReadName( const char* p, TIXMLA_STRING * name )
{
	*name = "";
	assert( p );

	// Names start with letters or underscores.
	// After that, they can be letters, underscores, numbers,
	// hyphens, or colons. (Colons are valid ony for namespaces,
	// but tinyxml can't tell namespaces from names.)
	if (    p && *p 
		 && ( isalpha( (unsigned char) *p ) || *p == '_' ) )
	{
		while(		p && *p
				&&	(		isalnum( (unsigned char ) *p ) 
						 || *p == '_'
						 || *p == '-'
						 || *p == '.'
						 || *p == ':' ) )
		{
			(*name) += *p;
			++p;
		}
		return p;
	}
	return 0;
}

const char* TiXmlBaseA::GetEntity( const char* p, char* value )
{
	// Presume an entity, and pull it out.
    TIXMLA_STRING ent;
	int i;

	// Handle the &#x entities.
	if (    strncmp( "&#x", p, 3 ) == 0 
	     && *(p+3) 
		 && *(p+4) 
		 && ( *(p+4) == ';' || *(p+5) == ';' )
	   )
	{
		*value = 0;

		if ( *(p+4) == ';' )
		{
			// Short, one value entity.
			if ( isalpha( *(p+3) ) ) *value += ( tolower( *(p+3) ) - 'a' + 10 );
			else				     *value += ( *(p+3) - '0' );

			return p+5;
		}
		else
		{
			// two value entity
			if ( isalpha( *(p+3) ) ) *value += ( tolower( *(p+3) ) - 'a' + 10 ) * 16;
			else				     *value += ( *(p+3) - '0' ) * 16;

			if ( isalpha( *(p+4) ) ) *value += ( tolower( *(p+4) ) - 'a' + 10 );
			else				     *value += ( *(p+4) - '0' );

			return p+6;
		}
	}

	// Now try to match it.
	for( i=0; i<NUM_ENTITY; ++i )
	{
		if ( strncmp( entity[i].str, p, entity[i].strLength ) == 0 )
		{
			assert( strlen( entity[i].str ) == entity[i].strLength );
			*value = entity[i].chr;
			return ( p + entity[i].strLength );
		}
	}

	// So it wasn't an entity, its unrecognized, or something like that.
	*value = *p;	// Don't put back the last one, since we return it!
	return p+1;
}


bool TiXmlBaseA::StringEqual( const char* p,
							 const char* tag,
							 bool ignoreCase )
{
	assert( p );
	if ( !p || !*p )
	{
		assert( 0 );
		return false;
	}

    if ( tolower( *p ) == tolower( *tag ) )
	{
		const char* q = p;

		if (ignoreCase)
		{
			while ( *q && *tag && *q == *tag )
			{
				++q;
				++tag;
			}

			if ( *tag == 0 )		// Have we found the end of the tag, and everything equal?
			{
				return true;
			}
		}
		else
		{
			while ( *q && *tag && tolower( *q ) == tolower( *tag ) )
			{
				++q;
				++tag;
			}

			if ( *tag == 0 )
			{
				return true;
			}
		}
	}
	return false;
}

const char* TiXmlBaseA::ReadText(	const char* p, 
									TIXMLA_STRING * text, 
									bool trimWhiteSpace, 
									const char* endTag, 
									bool caseInsensitive )
{
    *text = "";
	if (    !trimWhiteSpace			// certain tags always keep whitespace
		 || !condenseWhiteSpace )	// if true, whitespace is always kept
	{
		// Keep all the white space.
		while (	   p && *p
				&& !StringEqual( p, endTag, caseInsensitive )
			  )
		{
			char c;
			p = GetChar( p, &c );
            (* text) += c;
		}
	}
	else
	{
		bool whitespace = false;

		// Remove leading white space:
		p = SkipWhiteSpace( p );
		while (	   p && *p
				&& !StringEqual( p, endTag, caseInsensitive ) )
		{
			if ( *p == '\r' || *p == '\n' )
			{
				whitespace = true;
				++p;
			}
			else if ( isspace( *p ) )
			{
				whitespace = true;
				++p;
			}
			else
			{
				// If we've found whitespace, add it before the
				// new character. Any whitespace just becomes a space.
				if ( whitespace )
				{
               (* text) += ' ';
					whitespace = false;
				}
				char c;
				p = GetChar( p, &c );
            (* text) += c;
			}
		}
	}
	return p + strlen( endTag );
}

#ifdef TIXMLA_USE_STL

void TiXmlDocumentA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	// The basic issue with a document is that we don't know what we're
	// streaming. Read something presumed to be a tag (and hope), then
	// identify it, and call the appropriate stream method on the tag.
	//
	// This "pre-streaming" will never read the closing ">" so the
	// sub-tag can orient itself.

	if ( !StreamTo( in, '<', tag ) ) 
	{
		SetError( TIXMLA_ERROR_PARSING_EMPTY, 0, 0 );
		return;
	}

	while ( in->good() )
	{
		int tagIndex = tag->length();
		while ( in->good() && in->peek() != '>' )
		{
			int c = in->get();
			(*tag) += (char) c;
		}

		if ( in->good() )
		{
			// We now have something we presume to be a node of 
			// some sort. Identify it, and call the node to
			// continue streaming.
			TiXmlNodeA* node = Identify( tag->c_str() + tagIndex );

			if ( node )
			{
				node->StreamIn( in, tag );
				bool isElement = node->ToElement() != 0;
				delete node;
				node = 0;

				// If this is the root element, we're done. Parsing will be
				// done by the >> operator.
				if ( isElement )
				{
					return;
				}
			}
			else
			{
				SetError( TIXMLA_ERROR, 0, 0 );
				return;
			}
		}
	}
	// We should have returned sooner.
	SetError( TIXMLA_ERROR, 0, 0 );
}

#endif

const char* TiXmlDocumentA::Parse( const char* p, TiXmlParsingDataA* prevData )
{
	ClearError();

	// Parse away, at the document level. Since a document
	// contains nothing but other tags, most of what happens
	// here is skipping white space.
	if ( !p || !*p )
	{
		SetError( TIXMLA_ERROR_DOCUMENT_EMPTY, 0, 0 );
		return 0;
	}

	// Note that, for a document, this needs to come
	// before the while space skip, so that parsing
	// starts from the pointer we are given.
	location.Clear();
	if ( prevData )
	{
		location.row = prevData->cursor.row;
		location.col = prevData->cursor.col;
	}
	else
	{
		location.row = 0;
		location.col = 0;
	}
	TiXmlParsingDataA data( p, TabSize(), location.row, location.col );
	location = data.Cursor();

    p = SkipWhiteSpace( p );
	if ( !p )
	{
		SetError( TIXMLA_ERROR_DOCUMENT_EMPTY, 0, 0 );
		return 0;
	}

	while ( p && *p )
	{
		TiXmlNodeA* node = Identify( p );
		if ( node )
		{
			p = node->Parse( p, &data );
			LinkEndChild( node );
		}
		else
		{
			break;
		}
		p = SkipWhiteSpace( p );
	}

	// All is well.
	return p;
}

void TiXmlDocumentA::SetError( int err, const char* pError, TiXmlParsingDataA* data )
{	
	// The first error in a chain is more accurate - don't set again!
	if ( error )
		return;

	assert( err > 0 && err < TIXMLA_ERROR_STRING_COUNT );
	error   = true;
	errorId = err;
	errorDesc = errorString[ errorId ];

	errorLocation.Clear();
	if ( pError && data )
	{
		//TiXmlParsingDataA data( pError, prevData );
		data->Stamp( pError );
		errorLocation = data->Cursor();
	}
}


TiXmlNodeA* TiXmlNodeA::Identify( const char* p )
{
	TiXmlNodeA* returnNode = 0;

	p = SkipWhiteSpace( p );
	if( !p || !*p || *p != '<' )
	{
		return 0;
	}

	TiXmlDocumentA* doc = GetDocument();
	p = SkipWhiteSpace( p );

	if ( !p || !*p )
	{
		return 0;
	}

	// What is this thing? 
	// - Elements start with a letter or underscore, but xml is reserved.
	// - Comments: <!--
	// - Decleration: <?xml
	// - Everthing else is unknown to tinyxml.
	//

	const char* xmlHeader = { "<?xml" };
	const char* commentHeader = { "<!--" };

	if ( StringEqual( p, xmlHeader, true ) )
	{
		#ifdef DEBUG_PARSER
			TIXMLA_LOG( "XML parsing Declaration\n" );
		#endif
		returnNode = new TiXmlDeclarationA();
	}
	else if (    isalpha( *(p+1) )
			  || *(p+1) == '_' )
	{
		#ifdef DEBUG_PARSER
			TIXMLA_LOG( "XML parsing Element\n" );
		#endif
		returnNode = new TiXmlElementA( "" );
	}
	else if ( StringEqual( p, commentHeader, false ) )
	{
		#ifdef DEBUG_PARSER
			TIXMLA_LOG( "XML parsing Comment\n" );
		#endif
		returnNode = new TiXmlCommentA();
	}
	else
	{
		#ifdef DEBUG_PARSER
			TIXMLA_LOG( "XML parsing Unknown\n" );
		#endif
		returnNode = new TiXmlUnknownA();
	}

	if ( returnNode )
	{
		// Set the parent, so it can report errors
		returnNode->parent = this;
	}
	else
	{
		if ( doc )
			doc->SetError( TIXMLA_ERROR_OUT_OF_MEMORY, 0, 0 );
	}
	return returnNode;
}

#ifdef TIXMLA_USE_STL

void TiXmlElementA::StreamIn (TIXMLA_ISTREAM * in, TIXMLA_STRING * tag)
{
	// We're called with some amount of pre-parsing. That is, some of "this"
	// element is in "tag". Go ahead and stream to the closing ">"
	while( in->good() )
	{
		int c = in->get();
		(*tag) += (char) c ;
		
		if ( c == '>' )
			break;
	}

	if ( tag->length() < 3 ) return;

	// Okay...if we are a "/>" tag, then we're done. We've read a complete tag.
	// If not, identify and stream.

	if (    tag->at( tag->length() - 1 ) == '>' 
		 && tag->at( tag->length() - 2 ) == '/' )
	{
		// All good!
		return;
	}
	else if ( tag->at( tag->length() - 1 ) == '>' )
	{
		// There is more. Could be:
		//		text
		//		closing tag
		//		another node.
		for ( ;; )
		{
			StreamWhiteSpace( in, tag );

			// Do we have text?
			if ( in->good() && in->peek() != '<' ) 
			{
				// Yep, text.
				TiXmlTextA text( "" );
				text.StreamIn( in, tag );

				// What follows text is a closing tag or another node.
				// Go around again and figure it out.
				continue;
			}

			// We now have either a closing tag...or another node.
			// We should be at a "<", regardless.
			if ( !in->good() ) return;
			assert( in->peek() == '<' );
			int tagIndex = tag->length();

			bool closingTag = false;
			bool firstCharFound = false;

			for( ;; )
			{
				if ( !in->good() )
					return;

				int c = in->peek();
				
				if ( c == '>' )
					break;

				*tag += c;
				in->get();

				if ( !firstCharFound && c != '<' && !IsWhiteSpace( c ) )
				{
					firstCharFound = true;
					if ( c == '/' )
						closingTag = true;
				}
			}
			// If it was a closing tag, then read in the closing '>' to clean up the input stream.
			// If it was not, the streaming will be done by the tag.
			if ( closingTag )
			{
				int c = in->get();
				assert( c == '>' );
				*tag += c;

				// We are done, once we've found our closing tag.
				return;
			}
			else
			{
				// If not a closing tag, id it, and stream.
				const char* tagloc = tag->c_str() + tagIndex;
				TiXmlNodeA* node = Identify( tagloc );
				if ( !node )
					return;
				node->StreamIn( in, tag );
				delete node;
				node = 0;

				// No return: go around from the beginning: text, closing tag, or node.
			}
		}
	}
}
#endif

const char* TiXmlElementA::Parse( const char* p, TiXmlParsingDataA* data )
{
	p = SkipWhiteSpace( p );
	TiXmlDocumentA* document = GetDocument();

	if ( !p || !*p )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_PARSING_ELEMENT, 0, 0 );
		return 0;
	}

//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}

	if ( *p != '<' )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_PARSING_ELEMENT, p, data );
		return 0;
	}

	p = SkipWhiteSpace( p+1 );

	// Read the name.
	const char* pErr = p;

    p = ReadName( p, &value );
	if ( !p || !*p )
	{
		if ( document )	document->SetError( TIXMLA_ERROR_FAILED_TO_READ_ELEMENT_NAME, pErr, data );
		return 0;
	}

    TIXMLA_STRING endTag ("</");
	endTag += value;
	endTag += ">";

	// Check for and read attributes. Also look for an empty
	// tag or an end tag.
	while ( p && *p )
	{
		pErr = p;
		p = SkipWhiteSpace( p );
		if ( !p || !*p )
		{
			if ( document ) document->SetError( TIXMLA_ERROR_READING_ATTRIBUTES, pErr, data );
			return 0;
		}
		if ( *p == '/' )
		{
			++p;
			// Empty tag.
			if ( *p  != '>' )
			{
				if ( document ) document->SetError( TIXMLA_ERROR_PARSING_EMPTY, p, data );		
				return 0;
			}
			return (p+1);
		}
		else if ( *p == '>' )
		{
			// Done with attributes (if there were any.)
			// Read the value -- which can include other
			// elements -- read the end tag, and return.
			++p;
			p = ReadValue( p, data );		// Note this is an Element method, and will set the error if one happens.
			if ( !p || !*p )
				return 0;

			// We should find the end tag now
			if ( StringEqual( p, endTag.c_str(), false ) )
			{
				p += endTag.length();
				return p;
			}
			else
			{
				if ( document ) document->SetError( TIXMLA_ERROR_READING_END_TAG, p, data );
				return 0;
			}
		}
		else
		{
			// Try to read an attribute:
			TiXmlAttributeA* attrib = new TiXmlAttributeA();
			if ( !attrib )
			{
				if ( document ) document->SetError( TIXMLA_ERROR_OUT_OF_MEMORY, pErr, data );
				return 0;
			}

			attrib->SetDocument( document );
			const char* pErr = p;
			p = attrib->Parse( p, data );

			if ( !p || !*p )
			{
				if ( document ) document->SetError( TIXMLA_ERROR_PARSING_ELEMENT, pErr, data );
				delete attrib;
				return 0;
			}

			// Handle the strange case of double attributes:
			TiXmlAttributeA* node = attributeSet.Find( attrib->Name() );
			if ( node )
			{
				node->SetValue( attrib->Value() );
				delete attrib;
				return 0;
			}

			attributeSet.Add( attrib );
		}
	}
	return p;
}


const char* TiXmlElementA::ReadValue( const char* p, TiXmlParsingDataA* data )
{
	TiXmlDocumentA* document = GetDocument();

	// Read in text and elements in any order.
	p = SkipWhiteSpace( p );
	while ( p && *p )
	{
		if ( *p != '<' )
		{
			// Take what we have, make a text element.
			TiXmlTextA* textNode = new TiXmlTextA( "" );

			if ( !textNode )
			{
				if ( document ) document->SetError( TIXMLA_ERROR_OUT_OF_MEMORY, 0, 0 );
				    return 0;
			}

			p = textNode->Parse( p, data );

			if ( !textNode->Blank() )
				LinkEndChild( textNode );
			else
				delete textNode;
		} 
		else 
		{
			// We hit a '<'
			// Have we hit a new element or an end tag?
			if ( StringEqual( p, "</", false ) )
			{
				return p;
			}
			else
			{
				TiXmlNodeA* node = Identify( p );
				if ( node )
				{
					p = node->Parse( p, data );
					LinkEndChild( node );
				}				
				else
				{
					return 0;
				}
			}
		}
		p = SkipWhiteSpace( p );
	}

	if ( !p )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_READING_ELEMENT_VALUE, 0, 0 );
	}	
	return p;
}


#ifdef TIXMLA_USE_STL
void TiXmlUnknownA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	while ( in->good() )
	{
		int c = in->get();	
		(*tag) += c;

		if ( c == '>' )
		{
			// All is well.
			return;		
		}
	}
}
#endif


const char* TiXmlUnknownA::Parse( const char* p, TiXmlParsingDataA* data )
{
	TiXmlDocumentA* document = GetDocument();
	p = SkipWhiteSpace( p );

//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}
	if ( !p || !*p || *p != '<' )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_PARSING_UNKNOWN, p, data );
		return 0;
	}
	++p;
    value = "";

	while ( p && *p && *p != '>' )
	{
		value += *p;
		++p;
	}

	if ( !p )
	{
		if ( document )	document->SetError( TIXMLA_ERROR_PARSING_UNKNOWN, 0, 0 );
	}
	if ( *p == '>' )
		return p+1;
	return p;
}

#ifdef TIXMLA_USE_STL
void TiXmlCommentA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	while ( in->good() )
	{
		int c = in->get();	
		(*tag) += c;

		if ( c == '>' 
			 && tag->at( tag->length() - 2 ) == '-'
			 && tag->at( tag->length() - 3 ) == '-' )
		{
			// All is well.
			return;		
		}
	}
}
#endif


const char* TiXmlCommentA::Parse( const char* p, TiXmlParsingDataA* data )
{
	TiXmlDocumentA* document = GetDocument();
	value = "";

	p = SkipWhiteSpace( p );

//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}
	const char* startTag = "<!--";
	const char* endTag   = "-->";

	if ( !StringEqual( p, startTag, false ) )
	{
		document->SetError( TIXMLA_ERROR_PARSING_COMMENT, p, data );
		return 0;
	}
	p += strlen( startTag );
	p = ReadText( p, &value, false, endTag, false );
	return p;
}


const char* TiXmlAttributeA::Parse( const char* p, TiXmlParsingDataA* data )
{
	p = SkipWhiteSpace( p );
	if ( !p || !*p ) return 0;

	int tabsize = 4;
	if ( document )
		tabsize = document->TabSize();

//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}
	// Read the name, the '=' and the value.
	const char* pErr = p;
	p = ReadName( p, &name );
	if ( !p || !*p )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_READING_ATTRIBUTES, pErr, data );
		return 0;
	}
	p = SkipWhiteSpace( p );
	if ( !p || !*p || *p != '=' )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_READING_ATTRIBUTES, p, data );
		return 0;
	}

	++p;	// skip '='
	p = SkipWhiteSpace( p );
	if ( !p || !*p )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_READING_ATTRIBUTES, p, data );
		return 0;
	}
	
	const char* end;

	if ( *p == '\'' )
	{
		++p;
		end = "\'";
		p = ReadText( p, &value, false, end, false );
	}
	else if ( *p == '"' )
	{
		++p;
		end = "\"";
		p = ReadText( p, &value, false, end, false );
	}
	else
	{
		// All attribute values should be in single or double quotes.
		// But this is such a common error that the parser will try
		// its best, even without them.
		value = "";
		while (    p && *p										// existence
				&& !isspace( *p ) && *p != '\n' && *p != '\r'	// whitespace
				&& *p != '/' && *p != '>' )						// tag end
		{
			value += *p;
			++p;
		}
	}
	return p;
}

#ifdef TIXMLA_USE_STL
void TiXmlTextA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	while ( in->good() )
	{
		int c = in->peek();	
		if ( c == '<' )
			return;

		(*tag) += c;
		in->get();
	}
}
#endif

const char* TiXmlTextA::Parse( const char* p, TiXmlParsingDataA* data )
{
	value = "";
//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}
	bool ignoreWhite = true;

	const char* end = "<";
	p = ReadText( p, &value, ignoreWhite, end, false );
	if ( p )
		return p-1;	// don't truncate the '<'
	return 0;
}

#ifdef TIXMLA_USE_STL
void TiXmlDeclarationA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
	while ( in->good() )
	{
		int c = in->get();
		(*tag) += c;

		if ( c == '>' )
		{
			// All is well.
			return;
		}
	}
}
#endif

const char* TiXmlDeclarationA::Parse( const char* p, TiXmlParsingDataA* data )
{
	p = SkipWhiteSpace( p );
	// Find the beginning, find the end, and look for
	// the stuff in-between.
	TiXmlDocumentA* document = GetDocument();
	if ( !p || !*p || !StringEqual( p, "<?xml", true ) )
	{
		if ( document ) document->SetError( TIXMLA_ERROR_PARSING_DECLARATION, 0, 0 );
		return 0;
	}
//	TiXmlParsingDataA data( p, prevData );
	if ( data )
	{
		data->Stamp( p );
		location = data->Cursor();
	}
	p += 5;

	version = "";
	encoding = "";
	standalone = "";

	while ( p && *p )
	{
		if ( *p == '>' )
		{
			++p;
			return p;
		}

		p = SkipWhiteSpace( p );
		if ( StringEqual( p, "version", true ) )
		{
			TiXmlAttributeA attrib;
			p = attrib.Parse( p, data );		
			version = attrib.Value();
		}
		else if ( StringEqual( p, "encoding", true ) )
		{
			TiXmlAttributeA attrib;
			p = attrib.Parse( p, data );		
			encoding = attrib.Value();
		}
		else if ( StringEqual( p, "standalone", true ) )
		{
			TiXmlAttributeA attrib;
			p = attrib.Parse( p, data );		
			standalone = attrib.Value();
		}
		else
		{
			// Read over whatever it is.
			while( p && *p && *p != '>' && !isspace( *p ) )
				++p;
		}
	}
	return 0;
}

bool TiXmlTextA::Blank() const
{
	for ( unsigned i=0; i<value.length(); i++ )
		if ( !isspace( value[i] ) )
			return false;
	return true;
}

