root/src/SWFItem.h

INCLUDED FROM

#ifndef SWF_ITEM_H
#define SWF_ITEM_H

#include <SWFReader.h>
#include <SWFWriter.h>
#include <libxml/tree.h>

namespace SWF {

class Context;
        
int SWFBitsNeeded( int32_t value, bool is_signed = false );
long SWFMaxBitsNeeded( bool is_signed, int how_many, ... );

class Item {
        public:
                Item();
                virtual ~Item() {}
        
                virtual bool parse( Reader *r, int end, Context *ctx ) = 0;
                virtual void dump( int indent, Context *ctx ) = 0;
                virtual size_t calcSize( Context *ctx, int start_at ) = 0;
                virtual void write( Writer *r, Context *ctx ) = 0;
        
                virtual void writeXML( xmlNodePtr xml, Context *ctx ) = 0;
                virtual void parseXML( xmlNodePtr xml, Context *ctx ) = 0;
                        
                // wont touch the context if size is cached.
                size_t getSize( Context *ctx, int start_at );
        
        protected:
                int getHeaderSize( int size );
                void writeHeader( Writer *w, Context *ctx, size_t len );
        
                int file_offset; // bytes after header for SWF, line for XML (NYI)
                int cached_size; // cached size
};
        
// to save the rest of a tag as binary data...
class Rest : public Item {
        public:
                Rest();
                virtual ~Rest();
                virtual bool parse( Reader *r, int end, Context *ctx );
                virtual void dump( int indent, Context *ctx );
                virtual size_t calcSize( Context *ctx, int start_at );
                virtual void write( Writer *w, Context *ctx );
                virtual void writeXML( xmlNodePtr node, Context *ctx );
                virtual void parseXML( xmlNodePtr node, Context *ctx );
        
                void getdata( unsigned char **data, int *size );
                void setdata( unsigned char *data, int size );
        
        protected:
                int size;
                unsigned char *data;
};
        
}
#endif