prjpeppercorn/libgm/src/Util.cpp

/*
 *  prjpeppercorn -- GateMate FPGAs Bitstream Documentation and Tools
 *
 *  Copyright (C) 2024  The Project Peppercorn Authors.
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

#include "Util.hpp"
#include <stdarg.h>

namespace GateMate {
VerbosityLevel verbosity = VerbosityLevel::DEBUG;

std::string stringf(const char *fmt, ...)
{
    std::string string;
    va_list ap;

    va_start(ap, fmt);
    string = vstringf(fmt, ap);
    va_end(ap);

    return string;
}

std::string vstringf(const char *fmt, va_list ap)
{
    std::string string;
    char *str = NULL;

#if defined(_WIN32) || defined(__CYGWIN__)
    int sz = 64 + strlen(fmt), rc;
    while (1) {
        va_list apc;
        va_copy(apc, ap);
        str = (char *)realloc(str, sz);
        rc = vsnprintf(str, sz, fmt, apc);
        va_end(apc);
        if (rc >= 0 && rc < sz)
            break;
        sz *= 2;
    }
#else
    if (vasprintf(&str, fmt, ap) < 0)
        str = NULL;
#endif

    if (str != NULL) {
        string = str;
        free(str);
    }

    return string;
}

} // namespace GateMate