ref: d67596f1bbdce63cd6a053cc17443fde1631ed10
dir: /sys/src/cmd/audio/libFLAC/share/safe_str.h/
/* libFLAC - Free Lossless Audio Codec library * Copyright (C) 2013-2022 Xiph.Org Foundation * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - 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. * * - Neither the name of the Xiph.org Foundation nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS 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 FOUNDATION OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* Safe string handling functions to replace things like strcpy, strncpy, * strcat, strncat etc. * All of these functions guarantee a correctly NUL terminated string but * the string may be truncated if the destination buffer was too short. */ #ifndef FLAC__SHARE_SAFE_STR_H #define FLAC__SHARE_SAFE_STR_H static inline char * safe_strncat(char *dest, const char *src, size_t dest_size) { char * ret; if (dest_size < 1) return dest; /* Assume dist has space for a term character .. */ ret = strncat(dest, src, dest_size - strlen (dest)); /* .. but set it explicitly. */ dest [dest_size - 1] = 0; return ret; } static inline char * safe_strncpy(char *dest, const char *src, size_t dest_size) { char * ret; if (dest_size < 1) return dest; ret = strncpy(dest, src, dest_size - 1); dest [dest_size - 1] = 0; return ret; } #endif /* FLAC__SHARE_SAFE_STR_H */