[Mod-c-cvs] ehtml/src MemBuf.cpp,NONE,1.1

[Gonzalo A. <ga...@us...>]

Update of /cvsroot/mod-c/ehtml/src
In directory sc8-pr-cvs7.sourceforge.net:/tmp/cvs-serv12336/src

Added Files:
	MemBuf.cpp 
Log Message:
A convenience Memory Buffer class.


--- NEW FILE: MemBuf.cpp ---

#include "MemBuf.h"
#include "Common.h"
#include <stdlib.h>

MemBuf::Buf::Buf(void* p, size_t s): _buf(p), _size(s), _refcnt(1) { }

MemBuf::Buf::~Buf() {
	free(_buf);
}

MemBuf::~MemBuf() {
	if (_b && _b->_refcnt == 1) {
		delete _b;
	} else {
		_b->_refcnt--;
	}
}

void MemBuf::resize(size_t s) {
	assert(_b != NULL);
	void* p = realloc(_b->_buf, s);
	if (p == NULL)
		throw "Not enough memory";
	_b->_buf = p;
	_b->_size = s;
}

MemBuf MemBuf::Dup(const void* p, size_t l) {
	return MemBuf(xmemdup(p,l),l);
}

using namespace std;

string MemBuf::AsString() throw (const char*) {
	string dev(Char());
	if (Size()-1 != dev.length())
		throw "Invalid string representation";
	return dev;
}