DynBlock.h

/*
 * $Id$
 * Copyright (c) 2004, Alfheim Corporation.
 *
 * elm/block/DynBlock.h -- interface for DynBlock class.
 */
#ifndef ELM_BLOCK_DYNBLOCK_H
#define ELM_BLOCK_DYNBLOCK_H
 
namespace elm { namespace block {
 
// DynBlock class
class DynBlock {
public:
    inline DynBlock(int capacity = 256, int increment = 64)
        : _size(0), cap(capacity), inc(increment), buf(new char[capacity]) { }
    inline ~DynBlock(void) { if(buf) delete [] buf; }
    void put(const char *block, int size);
    void get(char *block, int size, int pos);
    char *alloc(int size);
    inline int size(void) const { return _size; }
    inline int capacity(void) const { return cap; }
    inline int increment(void) const { return inc; }
    inline void setSize(int new_size) { _size = new_size; }
    inline void reset(void) { _size = 0; if(!buf) buf = new char[cap]; }
    inline const char *base(void) const { return buf; }
    inline char *detach(void)
        { char *result = buf; buf = 0; return result; }
private:
    int _size, cap, inc;
    char *buf;
    void grow(int min);
};
 
} } // elm::block
 
#endif // ELM_BLOCK_DYNBLOCK_H