unparse.c revision 3984b61df41c68966bdfbb2a5e5a45ef4b9a536c 
1/*
2 * unparse.c -- convert a UUID to string
3 *
4 * Copyright (C) 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, and the entire permission notice in its entirety,
12 *    including the disclaimer of warranties.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote
17 *    products derived from this software without specific prior
18 *    written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
23 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
30 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
31 * DAMAGE.
32 * %End-Header%
33 */
34
35#include <stdio.h>
36
37#include "uuidP.h"
38
39static const char *fmt_lower =
40	"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x";
41
42static const char *fmt_upper =
43	"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X";
44
45#ifdef UUID_UNPARSE_DEFAULT_UPPER
46#define FMT_DEFAULT fmt_upper
47#else
48#define FMT_DEFAULT fmt_lower
49#endif
50
51static void uuid_unparse_x(const uuid_t uu, char *out, const char *fmt)
52{
53	struct uuid uuid;
54
55	uuid_unpack(uu, &uuid);
56	sprintf(out, fmt,
57		uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
58		uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
59		uuid.node[0], uuid.node[1], uuid.node[2],
60		uuid.node[3], uuid.node[4], uuid.node[5]);
61}
62
63void uuid_unparse_lower(const uuid_t uu, char *out)
64{
65	uuid_unparse_x(uu, out,	fmt_lower);
66}
67
68void uuid_unparse_upper(const uuid_t uu, char *out)
69{
70	uuid_unparse_x(uu, out,	fmt_upper);
71}
72
73void uuid_unparse(const uuid_t uu, char *out)
74{
75	uuid_unparse_x(uu, out, FMT_DEFAULT);
76}
77