to_string.cpp

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/*
 Copyright (C) 2016 Quaternion Risk Management Ltd
 All rights reserved.
 
 This file is part of ORE, a free-software/open-source library
 for transparent pricing and risk analysis - http://opensourcerisk.org
 
 ORE is free software: you can redistribute it and/or modify it
 under the terms of the Modified BSD License.  You should have received a
 copy of the license along with this program.
 The license is also available online at <http://opensourcerisk.org>
 
 This program is distributed on the basis that it will form a useful
 contribution to risk analytics and model standardisation, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 FITNESS FOR A PARTICULAR PURPOSE. See the license for more details.
*/
 
/*! \file ored/utilities/to_string.cpp
    \brief
    \ingroup utilities
*/
 
#include <ored/utilities/to_string.hpp>
#include <ored/utilities/log.hpp>
 
#include <ql/errors.hpp>
 
#include <iostream>
#include <stdio.h>
 
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
 
using std::string;
 
namespace ore {
namespace data {
 
using namespace QuantLib;
 
std::string to_string(const Date& date) {
    if (date == Date())
        return "1901-01-01";
 
    char buf[11];
    int y = date.year();
    int m = static_cast<int>(date.month());
    int d = date.dayOfMonth();
 
    int n = snprintf(buf, sizeof(buf), "%04d-%02d-%02d", y, m, d);
    QL_REQUIRE(n == 10, "Failed to convert date " << date << " to_string() n:" << n);
    return std::string(buf);
}
 
string to_string(bool aBool) { return aBool ? "true" : "false"; }
 
std::string to_string(const Period& period) {
    Integer n = period.length();
    Integer m = 0;
    std::ostringstream o;
    switch (period.units()) {
    case Days:
        if (n>=7) {
        m = n/7;
        o << m << "W";
        n = n%7;
    }
    if (n != 0 || m == 0) {
        o << n << "D";
        return o.str();
    }
    else {
        return o.str();
    }
    case Weeks: {
        o << n << "W";
    return o.str();
    }
    case Months:
        if (n>=12) {
        m = n/12;
        o << n/12 << "Y";
        n = n%12;
    }
    if (n != 0 || m == 0) {
        o << n << "M";
        return o.str();
    }
    else {
        return o.str();
    }
    case Years: {
        o << n << "Y";
    return o.str();
    }
    default:
        ALOG("unknown time unit (" << Integer(period.units()) << ")");
    o << period;
    return o.str();
    }
}
 
} // namespace data
} // namespace ore