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/*
* sysobj - https://github.com/bp0/verbose-spork
* Copyright (C) 2018 Burt P. <pburt0@gmail.com>
*
* 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.
*
*/
#ifndef _APPF_H_
#define _APPF_H_
/* Appends a formatted element to a string, adding an optional
* separator string if the string is not empty.
* The string is created if str is null.
* ex: ret = appf(ret, "; ", "%s = %d", name, value); */
char *appf(char *str, const char *sep, const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
/* Same as above except that str is untouched.
* ex: ret = appf(keeper, "; ", "%s = %d", name, value); */
char *appfdup(const char *str, const char *sep, const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
/* for convenience */
#define appfsp(str, fmt, ...) appf(str, " ", fmt, __VA_ARGS__)
#define appfnl(str, fmt, ...) appf(str, "\n", fmt, __VA_ARGS__)
#endif
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