src/msw/ole/uuid.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        ole/uuid.cpp
   3 // Purpose:     implements Uuid class, see uuid.h for details
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     12.09.96
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // Declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17 #pragma implementation "uuid.h"
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #if defined(__BORLANDC__)
  24 #pragma hdrstop
  25 #endif
  26
  27 #include  "wx/setup.h"
  28
  29 #if wxUSE_OLE && wxUSE_DRAG_AND_DROP
  30
  31 // standard headers
  32 #if wxCHECK_W32API_VERSION( 1, 0 )
  33     #include <windows.h>
  34 #endif
  35 #include  <rpc.h>                       // UUID related functions
  36
  37 #include  "wx/msw/ole/uuid.h"
  38
  39
  40
  41 // ============================================================================
  42 // Implementation
  43 // ============================================================================
  44
  45 // length of UUID in C format
  46 #define   UUID_CSTRLEN  100     // real length is 66
  47
  48 // copy ctor
  49 Uuid::Uuid(const Uuid& uuid)
  50 {
  51   // bitwise copy Ok for UUIDs
  52   m_uuid = uuid.m_uuid;
  53
  54   // force the string to be allocated by RPC
  55   // (we free it later with RpcStringFree)
  56 #ifdef _UNICODE
  57   UuidToString(&m_uuid, (unsigned short **)&m_pszUuid);
  58 #else
  59   UuidToString(&m_uuid, &m_pszUuid);
  60 #endif
  61
  62   // allocate new buffer
  63   m_pszCForm = new wxChar[UUID_CSTRLEN];
  64   // and fill it
  65   memcpy(m_pszCForm, uuid.m_pszCForm, UUID_CSTRLEN*sizeof(wxChar));
  66 }
  67
  68 // assignment operator
  69 Uuid& Uuid::operator=(const Uuid& uuid)
  70 {
  71   m_uuid = uuid.m_uuid;
  72
  73   // force the string to be allocated by RPC
  74   // (we free it later with RpcStringFree)
  75 #ifdef _UNICODE
  76   UuidToString(&m_uuid, (unsigned short **)&m_pszUuid);
  77 #else
  78   UuidToString(&m_uuid, &m_pszUuid);
  79 #endif
  80
  81   // allocate new buffer if not done yet
  82   if ( !m_pszCForm )
  83     m_pszCForm = new wxChar[UUID_CSTRLEN];
  84
  85   // and fill it
  86   memcpy(m_pszCForm, uuid.m_pszCForm, UUID_CSTRLEN*sizeof(wxChar));
  87
  88   return *this;
  89 }
  90
  91 // dtor
  92 Uuid::~Uuid()
  93 {
  94   // this string must be allocated by RPC!
  95   // (otherwise you get a debug breakpoint deep inside RPC DLL)
  96   if ( m_pszUuid )
  97 #ifdef _UNICODE
  98     RpcStringFree((unsigned short **)&m_pszUuid);
  99 #else
 100     RpcStringFree(&m_pszUuid);
 101 #endif
 102
 103   // perhaps we should just use a static buffer and not bother
 104   // with new and delete?
 105   if ( m_pszCForm )
 106     delete [] m_pszCForm;
 107 }
 108
 109 // update string representation of new UUID
 110 void Uuid::Set(const UUID &uuid)
 111 {
 112   m_uuid = uuid;
 113
 114   // get string representation
 115 #ifdef _UNICODE
 116   UuidToString(&m_uuid, (unsigned short **)&m_pszUuid);
 117 #else
 118   UuidToString(&m_uuid, &m_pszUuid);
 119 #endif
 120
 121   // cache UUID in C format
 122   UuidToCForm();
 123 }
 124
 125 // create a new UUID
 126 void Uuid::Create()
 127 {
 128   UUID uuid;
 129
 130   // can't fail
 131   UuidCreate(&uuid);
 132
 133   Set(uuid);
 134 }
 135
 136 // set the value
 137 bool Uuid::Set(const wxChar *pc)
 138 {
 139   // get UUID from string
 140 #ifdef _UNICODE
 141   if ( UuidFromString((unsigned short *)pc, &m_uuid) != RPC_S_OK)
 142 #else
 143   if ( UuidFromString((wxUChar *)pc, &m_uuid) != RPC_S_OK)
 144 #endif
 145     // failed: probably invalid string
 146     return FALSE;
 147
 148   // transform it back to string to normalize it
 149 #ifdef _UNICODE
 150   UuidToString(&m_uuid, (unsigned short **)&m_pszUuid);
 151 #else
 152   UuidToString(&m_uuid, &m_pszUuid);
 153 #endif
 154
 155   // update m_pszCForm
 156   UuidToCForm();
 157
 158   return TRUE;
 159 }
 160
 161 // stores m_uuid in m_pszCForm in a format required by
 162 // DEFINE_GUID macro: i.e. something like
 163 //  0x7D8A2281L,0x4C61,0x11D0,0xBA,0xBD,0x00,0x00,0xC0,0x18,0xBA,0x27
 164 // m_pszUuid is of the form (no, it's not quite the same UUID :-)
 165 //  6aadc650-67b0-11d0-bac8-0000c018ba27
 166 void Uuid::UuidToCForm()
 167 {
 168   if ( m_pszCForm == NULL )
 169     m_pszCForm = new wxChar[UUID_CSTRLEN];
 170
 171   wsprintf(m_pszCForm, wxT("0x%8.8X,0x%4.4X,0x%4.4X,0x%2.2X,0x2.2%X,0x2.2%X,0x2.2%X,0x2.2%X,0x2.2%X,0x2.2%X,0x2.2%X"),
 172            m_uuid.Data1, m_uuid.Data2, m_uuid.Data3,
 173            m_uuid.Data4[0], m_uuid.Data4[1], m_uuid.Data4[2], m_uuid.Data4[3],
 174            m_uuid.Data4[4], m_uuid.Data4[5], m_uuid.Data4[6], m_uuid.Data4[7]);
 175 }
 176
 177 #endif
 178   // wxUSE_DRAG_AND_DROP