busybox/e2fsprogs/uuid/unparse.c

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/* vi: set sw=4 ts=4: */
/*
* unparse.c -- convert a UUID to string
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*
* Copyright (C) 1996, 1997 Theodore Ts'o.
*
* %Begin-Header%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
* WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* %End-Header%
*/
#include <stdio.h>
#include "uuidP.h"
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static const char *fmt_lower =
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x";
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static const char *fmt_upper =
"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X";
#ifdef UUID_UNPARSE_DEFAULT_UPPER
#define FMT_DEFAULT fmt_upper
#else
#define FMT_DEFAULT fmt_lower
#endif
static void uuid_unparse_x(const uuid_t uu, char *out, const char *fmt)
{
struct uuid uuid;
uuid_unpack(uu, &uuid);
sprintf(out, fmt,
uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
uuid.node[0], uuid.node[1], uuid.node[2],
uuid.node[3], uuid.node[4], uuid.node[5]);
}
void uuid_unparse_lower(const uuid_t uu, char *out)
{
uuid_unparse_x(uu, out, fmt_lower);
}
void uuid_unparse_upper(const uuid_t uu, char *out)
{
uuid_unparse_x(uu, out, fmt_upper);
}
void uuid_unparse(const uuid_t uu, char *out)
{
uuid_unparse_x(uu, out, FMT_DEFAULT);
}