StringWriter.h

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#ifndef __DCL_STRING_WRITER_H__
#define __DCL_STRING_WRITER_H__     20110221
 
#ifndef __DCL_WRITER_H__
#include <dcl/Writer.h>
#endif
#ifndef __DCL_STRING_H__
#include <dcl/String.h>
#endif
 
__DCL_BEGIN_NAMESPACE

class DCLCAPI StringWriter : public Writer
{
    DECLARE_CLASSINFO(StringWriter)
public:
    virtual String toString() const;

    StringWriter(size_t _capacity = 4096);

    virtual ~StringWriter();

    virtual void close()
            __DCL_THROWS1(IOException*);

    virtual Writer& write(const wchar_t* _buf, size_t _n)
            __DCL_THROWS1(IOException*);

    virtual int vprintf(const wchar_t* _format, va_list _arglist)
        __DCL_THROWS1(IOException*);

    virtual size_t writeTo(Writer& _writer) const
            __DCL_THROWS1(IOException*);

    virtual size_t flushTo(Writer& _writer)
            __DCL_THROWS1(IOException*);

    virtual void reset();

    const wchar_t* data() const;

    size_t size() const;
 
protected:
    CharBuffer*     __buf;
    size_t          __capacity;
};
 
inline const wchar_t* StringWriter::data() const
{
    return __buf != NULL ? __buf->data() : NULL;
}
 
inline size_t StringWriter::size() const
{
    return __buf != NULL ? __buf->__dataLength : 0;
}
 
__DCL_END_NAMESPACE
 
#endif      // __DCL_STRING_WRITER_H__