release/src/router/busybox/e2fsprogs/old_e2fsprogs/uuid/unparse.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * unparse.c -- convert a UUID to string
   4  *
   5  * Copyright (C) 1996, 1997 Theodore Ts'o.
   6  *
   7  * %Begin-Header%
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, and the entire permission notice in its entirety,
  13  *    including the disclaimer of warranties.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior
  19  *    written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  22  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
  24  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  27  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  31  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
  32  * DAMAGE.
  33  * %End-Header%
  34  */
  35
  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
  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
  64 void uuid_unparse_lower(const uuid_t uu, char *out)
  65 {
  66         uuid_unparse_x(uu, out, fmt_lower);
  67 }
  68
  69 void uuid_unparse_upper(const uuid_t uu, char *out)
  70 {
  71         uuid_unparse_x(uu, out, fmt_upper);
  72 }
  73
  74 void uuid_unparse(const uuid_t uu, char *out)
  75 {
  76         uuid_unparse_x(uu, out, FMT_DEFAULT);
  77 }