xplc-cxx/strtouuid.cc

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * XPLC - Cross-Platform Lightweight Components
   4  * Copyright (C) 2002-2003, Pierre Phaneuf
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation; either version 2.1 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19  * USA
  20  *
  21  * As a special exception, you may use this file as part of a free
  22  * software library without restriction.  Specifically, if other files
  23  * instantiate templates or use macros or inline functions from this
  24  * file, or you compile this file and link it with other files to
  25  * produce an executable, this file does not by itself cause the
  26  * resulting executable to be covered by the GNU Lesser General Public
  27  * License.  This exception does not however invalidate any other
  28  * reasons why the executable file might be covered by the GNU Lesser
  29  * General Public License.
  30  */
  31
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <xplc/uuid.h>
  35
  36 const UUID UuidFromString(const char* str) {
  37   UUID rv;
  38   char tmp[3];
  39   char* end;
  40   bool format1 = false;
  41   bool ok = false;
  42
  43   do {
  44     if(*str == '{') {
  45       format1 = true;
  46       ++str;
  47     }
  48
  49     rv.Data1 = strtoul(str, &end, 16);
  50     if(end != str + 8)
  51       break;
  52     str = end;
  53
  54     if(*str != '-')
  55       break;
  56     ++str;
  57
  58     rv.Data2 = static_cast<unsigned short>(strtoul(str, &end, 16));
  59     if(end != str + 4)
  60       break;
  61     str = end;
  62
  63     if(*str != '-')
  64       break;
  65     ++str;
  66
  67     rv.Data3 = static_cast<unsigned short>(strtoul(str, &end, 16));
  68     if(end != str + 4)
  69       break;
  70     str = end;
  71
  72     if(*str != '-')
  73       break;
  74     ++str;
  75
  76     tmp[2] = 0;
  77
  78     strncpy(tmp, str, 2);
  79     rv.Data4[0] = static_cast<unsigned char>(strtoul(tmp, &end, 16));
  80     if(end != tmp + 2)
  81       break;
  82     str += 2;
  83
  84     strncpy(tmp, str, 2);
  85     rv.Data4[1] = static_cast<unsigned char>(strtoul(tmp, &end, 16));
  86     if(end != tmp + 2)
  87       break;
  88     str += 2;
  89
  90     if(*str != '-')
  91       break;
  92     ++str;
  93
  94     for(int i = 2; i < 8; ++i) {
  95       strncpy(tmp, str, 2);
  96       rv.Data4[i] = static_cast<unsigned char>(strtoul(tmp, &end, 16));
  97       if(end != tmp + 2)
  98         break;
  99       str += 2;
 100     }
 101
 102     if(format1) {
 103       if(*str != '}')
 104         break;
 105       ++str;
 106     }
 107
 108     if(*str != 0)
 109       break;
 110
 111     ok = true;
 112   } while(0);
 113
 114   if(!ok)
 115     rv = UUID_null;
 116
 117   return rv;
 118 }
 119