shttpd/buffer/append.c

/* sHT -- append and iterate a suffix
   Copyright (C) 2019 Ariadne Devos

   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 3 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, see <http://www.gnu.org/licenses/>. */

#include <stddef.h>
#include <sHT/index.h>
#include <sHT/string.h>

size_t
sHT_append(char *to, const char *from, size_t length0, size_t length1, size_t i0, size_t i1)
{
	/* Compute the number of bytes that can be read and written. */
        size_t todo = sHT_min_size(length0 - i0, length1 - i1);
        size_t i;
	/* Then copy them. */
        sHT_index_iterate(i, todo)
                to[i0 + i] = from[i1 + i];
        return i;
}