/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2013 Kay Sievers systemd 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 2.1 of the License, or (at your option) any later version. systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. ***/ /* * Concatenates/copies strings. In any case, terminates in all cases * with '\0' * and moves the @dest pointer forward to the added '\0'. * Returns the * remaining size, and 0 if the string was truncated. */ #include <stdio.h> #include <string.h> #include "strxcpyx.h" size_t strpcpy(char **dest, size_t size, const char *src) { size_t len; len = strlen(src); if (len >= size) { if (size > 1) *dest = mempcpy(*dest, src, size-1); size = 0; } else { if (len > 0) { *dest = mempcpy(*dest, src, len); size -= len; } } *dest[0] = '\0'; return size; } size_t strpcpyf(char **dest, size_t size, const char *src, ...) { va_list va; int i; va_start(va, src); i = vsnprintf(*dest, size, src, va); if (i < (int)size) { *dest += i; size -= i; } else { *dest += size; size = 0; } va_end(va); *dest[0] = '\0'; return size; } size_t strpcpyl(char **dest, size_t size, const char *src, ...) { va_list va; va_start(va, src); do { size = strpcpy(dest, size, src); src = va_arg(va, char *); } while (src != NULL); va_end(va); return size; } size_t strscpy(char *dest, size_t size, const char *src) { char *s; s = dest; return strpcpy(&s, size, src); } size_t strscpyl(char *dest, size_t size, const char *src, ...) { va_list va; char *s; va_start(va, src); s = dest; do { size = strpcpy(&s, size, src); src = va_arg(va, char *); } while (src != NULL); va_end(va); return size; }