xlutil.hpp

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// Copyright (c) 2014 Edward Lam
//
// All rights reserved. This software is distributed under the
// Mozilla Public License, v. 2.0 ( http://www.mozilla.org/MPL/2.0/ ).
//
// Redistributions of source code must retain the above copyright
// and license notice and the following restrictions and disclaimer.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef XLKIT_UTIL_HPP
#define XLKIT_UTIL_HPP

#include <xlkit/xlversion.hpp>

#include <string>

#include <stdio.h>
#include <stdarg.h>

namespace xlkit {
XLKIT_USE_VERSION_NAMESPACE
namespace XLKIT_VERSION_NAME {

#ifdef _MSC_VER
#define XLKIT_PUSH_DISABLE_WARN_DEPRECATION \
            __pragma(warning(push)) \
            __pragma(warning(disable:4996)) \
            
#define XLKIT_POP_DISABLE_WARN_DEPRECATION \
            __pragma(warning(pop)) \
            
#else
#define XLKIT_PUSH_DISABLE_WARN_DEPRECATION 
#define XLKIT_POP_DISABLE_WARN_DEPRECATION 
#endif

inline std::string
strprintfV(const char *fmt, va_list args) {
    static const size_t NBUF = 2048;
    std::string str(NBUF, 0);
    while (true) {
        XLKIT_PUSH_DISABLE_WARN_DEPRECATION
        int n = vsnprintf(&str[0], str.size(), fmt, args);
        XLKIT_POP_DISABLE_WARN_DEPRECATION
        if (n > 0 && n < (int)str.size()) {
            str.resize(n);
            break;
        }
        str.append(NBUF, 0);
    }
    return str;
}
inline std::string
strprintf(const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);
    std::string str = strprintfV(fmt, args);
    va_end(args);
    return str;
}

} // namespace XLKIT_VERSION_NAME
} // namespace xlkit

#endif // XLKIT_UTIL_HPP