#include <QCryptographicHash>
#include "client.h"
#include "Utility.h"


QByteArray md5_sum(QString &filename)
{
	QFile file(filename);
	if (! file.exists())
	{
		Logger::Warn("Can't compute md5sum: file %s do not exist\n", filename.toStdString().c_str());
		return NULL;
	}
	
	file.open(QIODevice::ReadOnly);
	QCryptographicHash md5hash(QCryptographicHash::Md5);	
	while (! file.atEnd())
	{
		const size_t buf_sz = 4096;
		md5hash.addData(file.read(buf_sz));
	}
	file.close();
	
	QByteArray res = md5hash.result().toHex();
	Logger::Debug("MD5 sum for %s is: %s\n", filename.toStdString().c_str(), res.data());
	return res;
}

#ifdef WIN32

int wstrlen(_TCHAR * wstr)
{
    int l_idx = 0;
    while (((char*)wstr)[l_idx]!=0) l_idx+=2;
    return l_idx;
}

char* wstrdup(_TCHAR* wSrc)
{
    int l_idx=0;
    int l_len = wstrlen(wSrc);
    char * l_nstr = (char*)malloc(l_len);
    if (l_nstr) {
        do {
           l_nstr[l_idx] = (char)wSrc[l_idx];
           l_idx++;
        } while ((char)wSrc[l_idx]!=0);
    }
    l_nstr[l_idx] = 0;
    return l_nstr;
}

#endif