You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
2.7 KiB
65 lines
2.7 KiB
/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License, version 2.0,
|
|
as published by the Free Software Foundation.
|
|
|
|
This program is also distributed with certain software (including
|
|
but not limited to OpenSSL) that is licensed under separate terms,
|
|
as designated in a particular file or component or in included license
|
|
documentation. The authors of MySQL hereby grant you an additional
|
|
permission to link the program and your derivative works with the
|
|
separately licensed software that they have included with MySQL.
|
|
|
|
Without limiting anything contained in the foregoing, this file,
|
|
which is part of C Driver for MySQL (Connector/C), is also subject to the
|
|
Universal FOSS Exception, version 1.0, a copy of which can be found at
|
|
http://oss.oracle.com/licenses/universal-foss-exception.
|
|
|
|
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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
/* File : strmake.c
|
|
Author : Michael Widenius
|
|
Updated: 20 Jul 1984
|
|
Defines: strmake()
|
|
|
|
strmake(dst,src,length) moves length characters, or until end, of src to
|
|
dst and appends a closing NUL to dst.
|
|
Note that if strlen(src) >= length then dst[length] will be set to \0
|
|
strmake() returns pointer to closing null
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
#include "m_string.h" // IWYU pragma: keep
|
|
|
|
char *strmake(char *dst, const char *src, size_t length) {
|
|
#ifdef EXTRA_DEBUG
|
|
/*
|
|
'length' is the maximum length of the string; the buffer needs
|
|
to be one character larger to accomodate the terminating '\0'.
|
|
This is easy to get wrong, so we make sure we write to the
|
|
entire length of the buffer to identify incorrect buffer-sizes.
|
|
We only initialise the "unused" part of the buffer here, a) for
|
|
efficiency, and b) because dst==src is allowed, so initialising
|
|
the entire buffer would overwrite the source-string. Also, we
|
|
write a character rather than '\0' as this makes spotting these
|
|
problems in the results easier.
|
|
*/
|
|
uint n = 0;
|
|
while (n < length && src[n++])
|
|
;
|
|
memset(dst + n, (int)'Z', length - n + 1);
|
|
#endif
|
|
|
|
while (length--)
|
|
if (!(*dst++ = *src++)) return dst - 1;
|
|
*dst = 0;
|
|
return dst;
|
|
}
|
|
|