root/core/StringBuffer.h

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#ifndef __avmplus_StringBuffer__
#define __avmplus_StringBuffer__

namespace avmplus
{
        /**
         * StringOutputStream is an OutputStream subclass, where
         * any data written to the stream is accumulated into
         * an in-memory buffer.  The buffer can later be retrieved
         * using the c_str method.
         */
        class StringOutputStream : public OutputStream
        {
        public:
                StringOutputStream(MMgc::GC *gc);
                ~StringOutputStream();

                const char* c_str() { return m_buffer; }        // note, always in UTF8 form
                int length() const { return m_length; }
                void reset() { m_length=0; }

                int write(const void *buffer, int count);
                
        private:
                enum { kInitialCapacity = 256 };
                
                char* m_buffer;
                int m_length;

                void grow(int newLength);
        };

        /**
         * StringBuffer is a PrintWriter subclass which enables
         * easy, cout-like output of text to a string buffer
         * in memory.
         */
        class StringBuffer : public PrintWriter
        {
        public:
                StringBuffer(AvmCore* core) :
                        PrintWriter(core), m_stream(core->GetGC())
                {
                        setOutputStream(&m_stream);
                }

                StringBuffer(MMgc::GC *gc) :
                        PrintWriter(NULL), m_stream(gc)
                {
                        setOutputStream(&m_stream);
                }

                const char* c_str() { return m_stream.c_str(); }        // note, always in UTF8 form
                int length() const { return m_stream.length(); }
                void reset() { m_stream.reset(); }
                
        private:
                StringOutputStream m_stream;
        };              
}
                
#endif /* __avmplus_StringBuffer__ */