/**
 * @file   utils/color_out.cpp
 * @author Martin Pulec     <pulec@cesnet.cz>
 */
/*
 * Copyright (c) 2018-2021 CESNET, z. s. p. o.
 * All rights reserved.
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 * modification, is permitted provided that the following conditions
 * are met:
 *
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
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 *    used to endorse or promote products derived from this software without
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 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESSED 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 AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#include "config_unix.h"
#include "config_win32.h"
#endif

#include <iostream>

#include "rang.hpp"
#include "utils/color_out.h"

using std::cout;

void color_out(uint32_t modificators, const char *format, ...) {
        rang::style style = static_cast<rang::style>(modificators & 0xf);
        unsigned int color_idx = (modificators >> 4u) & 0xf;
        rang::fg color = color_idx == 0 ? rang::fg::reset : static_cast<rang::fg>(29 + color_idx);

        va_list ap;
        va_start(ap, format);
        int size = vsnprintf(NULL, 0, format, ap);
        va_end(ap);

        // format the string
        char *buffer = (char *) alloca(size + 1);
        va_start(ap, format);
        if (vsprintf(buffer, format, ap) != size) {
                va_end(ap);
                return;
        }
        va_end(ap);

        cout << style << color << buffer << rang::style::reset << rang::fg::reset << std::flush;
}

