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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 "config.h"
36 #include <stdio.h>
37 
38 #include "uuidP.h"
39 
40 static const char *fmt_lower =
41 	"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x";
42 
43 static const char *fmt_upper =
44 	"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X";
45 
46 #ifdef UUID_UNPARSE_DEFAULT_UPPER
47 #define FMT_DEFAULT fmt_upper
48 #else
49 #define FMT_DEFAULT fmt_lower
50 #endif
51 
uuid_unparse_x(const uuid_t uu,char * out,const char * fmt)52 static void uuid_unparse_x(const uuid_t uu, char *out, const char *fmt)
53 {
54 	struct uuid uuid;
55 
56 	uuid_unpack(uu, &uuid);
57 	sprintf(out, fmt,
58 		uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
59 		uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
60 		uuid.node[0], uuid.node[1], uuid.node[2],
61 		uuid.node[3], uuid.node[4], uuid.node[5]);
62 }
63 
uuid_unparse_lower(const uuid_t uu,char * out)64 void uuid_unparse_lower(const uuid_t uu, char *out)
65 {
66 	uuid_unparse_x(uu, out,	fmt_lower);
67 }
68 
uuid_unparse_upper(const uuid_t uu,char * out)69 void uuid_unparse_upper(const uuid_t uu, char *out)
70 {
71 	uuid_unparse_x(uu, out,	fmt_upper);
72 }
73 
uuid_unparse(const uuid_t uu,char * out)74 void uuid_unparse(const uuid_t uu, char *out)
75 {
76 	uuid_unparse_x(uu, out, FMT_DEFAULT);
77 }
78