StringBuffer.h

/*
 * StringBuffer class interface
 * Copyright (c) 2016, university of Toulouse.
 *
 * elm/string/StringBuffer.h -- interface for StringBuffer class.
 */
#ifndef ELM_STRING_STRING_BUFFER_H
#define ELM_STRING_STRING_BUFFER_H
 
#include <elm/string/CString.h>
#include <elm/string/String.h>
#include <elm/io/BlockOutStream.h>
#include <elm/io/Output.h>
 
namespace elm {
 
// StringBuffer class
class StringBuffer: public io::Output {
public:
 
    inline StringBuffer(int capacity = 64, int increment = 32)
        : io::Output(_stream), _stream(capacity, increment)
        { init(); }
 
    inline String toString()
        { int len = length(); _stream.write('\0');
        return String((String::buffer_t *)_stream.detach(), sizeof(short), len); }
    inline CString toCString()
        { _stream.write('\0'); return _stream.block() + sizeof(short); }
        
    inline String copyString()
        { return String( _stream.block() + sizeof(short), _stream.size() - sizeof(short)); }
    inline int length(void) const { return _stream.size() - sizeof(short); }
    inline void reset(void) { _stream.clear(); init(); }
    inline io::OutStream& stream(void) { return _stream; }
 
private:
    inline void init(void) { String::buffer_t str = { 0 }; _stream.write((char *)&str, sizeof(short)); }
    io::BlockOutStream _stream;
};
 
} // elm
 
#endif // ELM_STRING_STRING_BUFFER_H