62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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/*-
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* Copyright (C) 2013 Intel Corporation
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* Copyright (C) 1997 Justin T. Gibbs
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <dev/nvme/nvme.h>
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void
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nvme_strvis(uint8_t *dst, const uint8_t *src, int dstlen, int srclen)
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{
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uint8_t *cur_pos;
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/* Trim leading/trailing spaces, nulls. */
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while (srclen > 0 && src[0] == ' ')
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src++, srclen--;
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while (srclen > 0
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&& (src[srclen - 1] == ' ' || src[srclen - 1] == '\0'))
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srclen--;
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while (srclen > 0 && dstlen > 1) {
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cur_pos = dst;
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/* Show '?' for non-printable characters. */
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if (*src < 0x20 || *src >= 0x7F)
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*cur_pos++ = '?';
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else
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*cur_pos++ = *src;
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src++;
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srclen--;
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dstlen -= cur_pos - dst;
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dst = cur_pos;
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}
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*dst = '\0';
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}
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