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71 lines
2.7 KiB
71 lines
2.7 KiB
5 months ago
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/* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License, version 2.0, as published by the Free Software Foundation.
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This library is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the library and your derivative works with the
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separately licensed software that they have included with MySQL.
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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License, version 2.0, for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301 USA */
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/* File : strxnmov.c
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Author : Richard A. O'Keefe.
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Updated: 2 June 1984
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Defines: strxnmov()
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strxnmov(dst, len, src1, ..., srcn, NullS)
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moves the first len characters of the concatenation of src1,...,srcn
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to dst and add a closing NUL character.
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It is just like strnmov except that it concatenates multiple sources.
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Beware: the last argument should be the null character pointer.
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Take VERY great care not to omit it! Also be careful to use NullS
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and NOT to use 0, as on some machines 0 is not the same size as a
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character pointer, or not the same bit pattern as NullS.
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NOTE
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strxnmov is like strnmov in that it moves up to len
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characters; dst will be padded on the right with one '\0' character.
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if total-string-length >= length then dst[length] will be set to \0
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*/
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#include <stdarg.h>
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#include <stddef.h>
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#include "m_string.h" // IWYU pragma: keep
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char *strxnmov(char *dst, size_t len, const char *src, ...) {
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va_list pvar;
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char *end_of_dst = dst + len;
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va_start(pvar, src);
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while (src != NullS) {
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do {
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if (dst == end_of_dst) goto end;
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} while ((*dst++ = *src++));
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dst--;
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src = va_arg(pvar, char *);
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}
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end:
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*dst = 0;
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va_end(pvar);
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return dst;
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}
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