trezor-mcu/emulator/strl.c

46 lines
1.2 KiB
C

/*
* This file is part of the TREZOR project, https://trezor.io/
*
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "strl.h"
#include <string.h>
size_t strlcpy(char *dst, const char *src, size_t size) {
if (size == 0) {
return 0;
}
for (size_t i = 0; i < size - 1; i++) {
dst[i] = src[i];
if (src[i] == '\0') {
return i;
}
}
dst[size - 1] = '\0';
return size - 2;
}
size_t strlcat(char *dst, const char *src, size_t size) {
size_t n = strnlen(dst, size);
return n + strlcpy(&dst[n], src, size - n);
}