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/***************************************************************************
libexercises part of Aldo
---------------------
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Giuseppe "denever" Martino
begin : Sun May 6 2001
email : denever@users.sourceforge.net
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, *
* MA 02110-1301 USA *
* *
***************************************************************************/
#include "qrz.hh"
#include "random.hh"
using namespace std;
using namespace libexercises;
Qrz::Qrz(const Qrz& cpy)
{
m_strings = cpy.m_strings;
}
Qrz::Qrz(const string& qrz_format, unsigned int qrz_num): m_num_strings(qrz_num)
{
m_num_chars = qrz_format.size();
string group_chars("eishtmoawjuvrlpfndbgkcyqzx");
string group_numbrs("0123456789");
librandom::Random RND;
string buffer;
buffer.clear();
typedef std::string::const_iterator cit;
for(unsigned int i=0; i<m_num_strings; i++)
for(cit it = qrz_format.begin(); it!= qrz_format.end(); it++)
switch(*it)
{
case '@':
m_strings += group_chars[ RND.integer(0, group_chars.size()-1)];
break;
case '#':
m_strings += group_numbrs[ RND.integer(0, group_numbrs.size()-1)];
break;
case '?':
if(RND.integer(0,1))
m_strings += group_chars[RND.integer(0, group_chars.size()-1)];
break;
case '$':
if(RND.integer(0,1))
m_strings += group_numbrs[RND.integer(0, group_numbrs.size()-1)];
break;
default:
m_strings += *it;
}
}
libkeyer::Keyer& libexercises::operator<<(libkeyer::Keyer& out, const Qrz& exc)
{
unsigned int strlen = exc.string_len();
for(unsigned int i=0; i< exc.len(); i++)
out << exc.get_string().substr(i* strlen, strlen);
return out;
}
unsigned int Qrz::verify(const std::string& catched) const
{
double wrong_letters=0.0;
if(catched.size() == m_strings.size())
{
if(catched != m_strings)
for(unsigned int i=0; i<m_num_chars*m_num_strings; i++)
{
if(catched[i] != m_strings[i])
wrong_letters++;
}
}
else
return 0;
double total = m_num_chars * m_num_strings;
double catched_tax = wrong_letters/total;
return int(100 - 100 * catched_tax); // return percentual of cathed letters
}
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