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/*
 * Copyright (C) 2007-2011 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#include "bu/taf.h"
#include "bu/stream.h"

Bu::TafWriter::TafWriter( Bu::Stream &sOut ) :
	sOut( sOut ),
	iDepth( 0 )
{
}

Bu::TafWriter::~TafWriter()
{
}

void Bu::TafWriter::ident()
{
	for( int j = 0; j < iDepth; j++ )
		sOut.write("    ", 4 );
}

void Bu::TafWriter::writeGroup( const Bu::TafGroup *pRoot )
{
	ident();
	sOut.write("{", 1 );
	if( pRoot->getName().isSet() )
		writeString( pRoot->getName() );
	sOut.write(":\n", 2 );
	iDepth++;
	const Bu::TafGroup::NodeList &nl = pRoot->getChildren();
	for( Bu::TafGroup::NodeList::const_iterator i = nl.begin(); i != nl.end(); i++ )
	{
		switch( (*i)->getType() )
		{
			case Bu::TafNode::typeGroup:
				writeGroup( (Bu::TafGroup *)(*i) );
				break;

			case Bu::TafNode::typeProperty:
				writeProperty( (Bu::TafProperty *)(*i) );
				break;

			case Bu::TafNode::typeComment:
				writeComment( (Bu::TafComment *)(*i) );
				break;
		}
	}
	iDepth--;
	ident();
	sOut.write("}\n", 2 );
}

void Bu::TafWriter::writeProperty( const Bu::TafProperty *pProp )
{
	ident();
	if( !pProp->getName().isEmpty() )
	{
		writeString( pProp->getName() );
		sOut.write("=", 1 );
		writeString( pProp->getValue() );
	}
	else
	{
		writeString( pProp->getValue() );
	}
	sOut.write("\n", 1 );
}

void Bu::TafWriter::writeComment( const Bu::TafComment *pComment )
{
	ident();
	if( pComment->isEOLStyle() )
	{
		sOut.write("//", 2 );
		sOut.write( pComment->getText().getStr(), pComment->getText().getSize() );
		sOut.write("\n", 1 );
	}
	else
	{
		sOut.write("/*", 2 );
		sOut.write( pComment->getText().getStr(), pComment->getText().getSize() );
		sOut.write("*/ ", 3 );
	}
}

void Bu::TafWriter::writeString( const Bu::String &str )
{
	sOut.write("\"", 1 );
	for( Bu::String::const_iterator s = str.begin(); s != str.end(); s++ )
	{
		if( *s == '\"' )
			sOut.write("\\\"", 2 );
		else if( *s == '\\' )
			sOut.write("\\\\", 2 );
		else if( *s < 32 || *s > 126 )
		{
			char buf[5];
			sprintf( buf, "\\x%02X", (unsigned char)*s );
			sOut.write(buf, 4 );
		}
		else
		{
			const char buf = *s;
			sOut.write( &buf, 1 );
		}
	}
	sOut.write("\"", 1 );
}