reactos/lib/cpl/intl/locale.c

   1 /*
   2  *  ReactOS
   3  *  Copyright (C) 2004, 2005 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * PROJECT:         ReactOS International Control Panel
  22  * FILE:            lib/cpl/intl/locale.c
  23  * PURPOSE:         Locale property page
  24  * PROGRAMMER:      Eric Kohl
  25  *                  Klemens Friedl
  26  */
  27
  28 #include <windows.h>
  29 #include <commctrl.h>
  30 #include <cpl.h>
  31
  32 #include "intl.h"
  33 #include "resource.h"
  34
  35
  36 // FIXME:
  37 //        * change registry function (-> "HKCR\MIME\Database\Rfc1766")
  38
  39
  40
  41 typedef struct _TZ_INFO
  42 {
  43   LONG Bias;
  44   LONG StandardBias;
  45   LONG DaylightBias;
  46   SYSTEMTIME StandardDate;
  47   SYSTEMTIME DaylightDate;
  48 } TZ_INFO, *PTZ_INFO;
  49
  50 typedef struct _TIMEZONE_ENTRY
  51 {
  52   struct _TIMEZONE_ENTRY *Prev;
  53   struct _TIMEZONE_ENTRY *Next;
  54   WCHAR Description[64];   /* 'Display' */
  55   WCHAR StandardName[32];  /* 'Std' */
  56   WCHAR DaylightName[32];  /* 'Dlt' */
  57   TZ_INFO TimezoneInfo;    /* 'TZI' */
  58   ULONG Index;             /* 'Index' */
  59 } TIMEZONE_ENTRY, *PTIMEZONE_ENTRY;
  60
  61
  62
  63 PTIMEZONE_ENTRY TimeZoneListHead = NULL;
  64 PTIMEZONE_ENTRY TimeZoneListTail = NULL;
  65
  66
  67
  68
  69 static PTIMEZONE_ENTRY
  70 GetLargerTimeZoneEntry(DWORD Index)
  71 {
  72   PTIMEZONE_ENTRY Entry;
  73
  74   Entry = TimeZoneListHead;
  75   while (Entry != NULL)
  76     {
  77       if (Entry->Index >= Index)
  78         return Entry;
  79
  80       Entry = Entry->Next;
  81     }
  82
  83   return NULL;
  84 }
  85
  86
  87 static VOID
  88 CreateTimeZoneList(VOID)
  89 {
  90
  91   WCHAR szKeyName[256];
  92   DWORD dwIndex;
  93   DWORD dwNameSize;
  94   DWORD dwValueSize;
  95   LONG lError;
  96   HKEY hZonesKey;
  97   HKEY hZoneKey;
  98
  99   PTIMEZONE_ENTRY Entry;
 100   PTIMEZONE_ENTRY Current;
 101
 102
 103
 104   if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
 105                     L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones",
 106                     0,
 107                     KEY_ALL_ACCESS,
 108                     &hZonesKey))
 109     return;
 110
 111   dwIndex = 0;
 112   while (TRUE)
 113     {
 114       dwNameSize = 256;
 115       lError = RegEnumKeyExW(hZonesKey,
 116                              dwIndex,
 117                              szKeyName,
 118                              &dwNameSize,
 119                              NULL,
 120                              NULL,
 121                              NULL,
 122                              NULL);
 123       if (lError != ERROR_SUCCESS && lError != ERROR_MORE_DATA)
 124         break;
 125
 126
 127       if (RegOpenKeyExW(hZonesKey,
 128                         szKeyName,
 129                         0,
 130                         KEY_ALL_ACCESS,
 131                         &hZoneKey))
 132         break;
 133
 134
 135       Entry = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(TIMEZONE_ENTRY));
 136       if (Entry == NULL)
 137         {
 138           RegCloseKey(hZonesKey);
 139           break;
 140         }
 141
 142       dwValueSize = 64 * sizeof(WCHAR);
 143       if (RegQueryValueExW(hZonesKey,
 144                            L"Display",
 145                            NULL,
 146                            NULL,
 147                            (LPBYTE)&Entry->Description,
 148                            &dwValueSize))
 149         {
 150           RegCloseKey(hZonesKey);
 151           break;
 152         }
 153
 154       dwValueSize = 32 * sizeof(WCHAR);
 155       if (RegQueryValueExW(hZonesKey,
 156                            L"Std",
 157                            NULL,
 158                            NULL,
 159                            (LPBYTE)&Entry->StandardName,
 160                            &dwValueSize))
 161         {
 162           RegCloseKey(hZonesKey);
 163           break;
 164         }
 165
 166       dwValueSize = 32 * sizeof(WCHAR);
 167       if (RegQueryValueExW(hZonesKey,
 168                            L"Dlt",
 169                            NULL,
 170                            NULL,
 171                            (LPBYTE)&Entry->DaylightName,
 172                            &dwValueSize))
 173         {
 174           RegCloseKey(hZonesKey);
 175           break;
 176         }
 177
 178       dwValueSize = sizeof(DWORD);
 179       if (RegQueryValueExW(hZonesKey,
 180                            L"Index",
 181                            NULL,
 182                            NULL,
 183                            (LPBYTE)&Entry->Index,
 184                            &dwValueSize))
 185         {
 186           RegCloseKey(hZonesKey);
 187           break;
 188         }
 189
 190       dwValueSize = sizeof(TZ_INFO);
 191       if (RegQueryValueExW(hZonesKey,
 192                            L"TZI",
 193                            NULL,
 194                            NULL,
 195                            (LPBYTE)&Entry->TimezoneInfo,
 196                            &dwValueSize))
 197         {
 198           RegCloseKey(hZonesKey);
 199           break;
 200         }
 201
 202       RegCloseKey(hZoneKey);
 203
 204       if (TimeZoneListHead == NULL &&
 205           TimeZoneListTail == NULL)
 206         {
 207           Entry->Prev = NULL;
 208           Entry->Next = NULL;
 209           TimeZoneListHead = Entry;
 210           TimeZoneListTail = Entry;
 211         }
 212       else
 213         {
 214           Current = GetLargerTimeZoneEntry(Entry->Index);
 215           if (Current != NULL)
 216             {
 217               if (Current == TimeZoneListHead)
 218                 {
 219                   /* Prepend to head */
 220                   Entry->Prev = NULL;
 221                   Entry->Next = TimeZoneListHead;
 222                   TimeZoneListHead->Prev = Entry;
 223                   TimeZoneListHead = Entry;
 224                 }
 225               else
 226                 {
 227                   /* Insert before current */
 228                   Entry->Prev = Current->Prev;
 229                   Entry->Next = Current;
 230                   Current->Prev->Next = Entry;
 231                   Current->Prev = Entry;
 232                 }
 233             }
 234           else
 235             {
 236               /* Append to tail */
 237               Entry->Prev = TimeZoneListTail;
 238               Entry->Next = NULL;
 239               TimeZoneListTail->Next = Entry;
 240               TimeZoneListTail = Entry;
 241             }
 242         }
 243
 244       dwIndex++;
 245     }
 246
 247   RegCloseKey(hZonesKey);
 248
 249 }
 250
 251
 252 static VOID
 253 ShowTimeZoneList(HWND hwnd)
 254 {
 255   TIME_ZONE_INFORMATION TimeZoneInfo;
 256   PTIMEZONE_ENTRY Entry;
 257   DWORD dwIndex;
 258   DWORD i;
 259
 260   GetTimeZoneInformation(&TimeZoneInfo);
 261
 262   dwIndex = 0;
 263   i = 0;
 264   Entry = TimeZoneListHead;
 265   while (Entry != NULL)
 266     {
 267       SendMessageW(hwnd,
 268                    CB_ADDSTRING,
 269                    0,
 270                    (LPARAM)Entry->Description);
 271
 272       if (!wcscmp(Entry->StandardName, TimeZoneInfo.StandardName))
 273         dwIndex = i;
 274
 275       i++;
 276       Entry = Entry->Next;
 277     }
 278
 279   SendMessageW(hwnd,
 280                CB_SETCURSEL,
 281                (WPARAM)dwIndex,
 282                0);
 283 }
 284
 285
 286
 287
 288 /* Property page dialog callback */
 289 INT_PTR CALLBACK
 290 LocalePageProc(HWND hwndDlg,
 291                UINT uMsg,
 292                WPARAM wParam,
 293                LPARAM lParam)
 294 {
 295   switch(uMsg)
 296   {
 297     case WM_INITDIALOG:
 298
 299       CreateTimeZoneList();
 300       ShowTimeZoneList(GetDlgItem(hwndDlg, IDC_LANGUAGELIST));
 301
 302       break;
 303   }
 304   return FALSE;
 305 }
 306
 307
 308 /* EOF */