intl/uconv/src/nsWinCharset.cpp

   1
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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   8  * http://www.mozilla.org/MPL/
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  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla Communicator client code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
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  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either of the GNU General Public License Version 2 or later (the "GPL"),
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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #include "nsIPlatformCharset.h"
  39 #include "nsGREResProperties.h"
  40 #include "pratom.h"
  41 #include <windows.h>
  42 #include "nsUConvDll.h"
  43 #include "nsIWin32Locale.h"
  44 #include "nsCOMPtr.h"
  45 #include "nsReadableUtils.h"
  46 #include "nsLocaleCID.h"
  47 #include "nsServiceManagerUtils.h"
  48 #include "nsITimelineService.h"
  49 #include "nsPlatformCharset.h"
  50
  51 static nsGREResProperties *gInfo = nsnull;
  52 static PRInt32 gCnt = 0;
  53
  54 NS_IMPL_ISUPPORTS1(nsPlatformCharset, nsIPlatformCharset)
  55
  56 nsPlatformCharset::nsPlatformCharset()
  57 {
  58   NS_TIMELINE_START_TIMER("nsPlatformCharset()");
  59
  60   PR_AtomicIncrement(&gCnt);
  61   nsAutoString acpKey(NS_LITERAL_STRING("acp."));
  62   acpKey.AppendInt(PRInt32(::GetACP() & 0x00FFFF), 10);
  63   MapToCharset(acpKey, mCharset);
  64
  65   NS_TIMELINE_STOP_TIMER("nsPlatformCharset()");
  66   NS_TIMELINE_MARK_TIMER("nsPlatformCharset()");
  67 }
  68
  69 nsPlatformCharset::~nsPlatformCharset()
  70 {
  71   PR_AtomicDecrement(&gCnt);
  72   if ((0 == gCnt) && (nsnull != gInfo)) {
  73     delete gInfo;
  74     gInfo = nsnull;
  75   }
  76 }
  77
  78 nsresult
  79 nsPlatformCharset::InitInfo()
  80 {
  81   if (gInfo == nsnull) {
  82     nsGREResProperties *info = new nsGREResProperties(NS_LITERAL_CSTRING("wincharset.properties"));
  83
  84     NS_ASSERTION(info , "cannot open properties file");
  85     NS_ENSURE_TRUE(info, NS_ERROR_FAILURE);
  86     gInfo = info;
  87   }
  88   return NS_OK;
  89 }
  90
  91 nsresult
  92 nsPlatformCharset::MapToCharset(nsAString& inANSICodePage, nsACString& outCharset)
  93 {
  94   //delay loading wincharset.properties bundle if possible
  95   if (inANSICodePage.EqualsLiteral("acp.1252")) {
  96     outCharset.AssignLiteral("windows-1252");
  97     return NS_OK;
  98   }
  99
 100   if (inANSICodePage.EqualsLiteral("acp.932")) {
 101     outCharset.AssignLiteral("Shift_JIS");
 102     return NS_OK;
 103   }
 104
 105   // ensure the .property file is loaded
 106   nsresult rv = InitInfo();
 107   if (NS_FAILED(rv)) {
 108     outCharset.AssignLiteral("windows-1252");
 109     return rv;
 110   }
 111
 112   nsAutoString charset;
 113   rv = gInfo->Get(inANSICodePage, charset);
 114   if (NS_FAILED(rv)) {
 115     outCharset.AssignLiteral("windows-1252");
 116     return rv;
 117   }
 118
 119   LossyCopyUTF16toASCII(charset, outCharset);
 120   return NS_OK;
 121 }
 122
 123 NS_IMETHODIMP
 124 nsPlatformCharset::GetCharset(nsPlatformCharsetSel selector,
 125                               nsACString& oResult)
 126 {
 127   oResult = mCharset;
 128   return NS_OK;
 129 }
 130
 131 NS_IMETHODIMP
 132 nsPlatformCharset::GetDefaultCharsetForLocale(const nsAString& localeName, nsACString& oResult)
 133 {
 134   nsCOMPtr<nsIWin32Locale>  winLocale;
 135   LCID                      localeAsLCID;
 136
 137   //
 138   // convert locale name to a code page (through the LCID)
 139   //
 140   nsresult rv;
 141   oResult.Truncate();
 142
 143   winLocale = do_GetService(NS_WIN32LOCALE_CONTRACTID, &rv);
 144   if (NS_FAILED(rv)) { return rv; }
 145
 146   rv = winLocale->GetPlatformLocale(localeName, &localeAsLCID);
 147   if (NS_FAILED(rv)) { return rv; }
 148
 149   PRUnichar acp_name[6];
 150   if (GetLocaleInfoW(localeAsLCID, LOCALE_IDEFAULTANSICODEPAGE, acp_name,
 151                      NS_ARRAY_LENGTH(acp_name))==0) {
 152     return NS_ERROR_FAILURE;
 153   }
 154   nsAutoString acp_key(NS_LITERAL_STRING("acp."));
 155   acp_key.Append(acp_name);
 156
 157   return MapToCharset(acp_key, oResult);
 158 }
 159
 160 NS_IMETHODIMP
 161 nsPlatformCharset::Init()
 162 {
 163   return NS_OK;
 164 }
 165
 166 nsresult
 167 nsPlatformCharset::MapToCharset(short script, short region, nsACString& outCharset)
 168 {
 169   return NS_OK;
 170 }
 171
 172 nsresult
 173 nsPlatformCharset::InitGetCharset(nsACString &oString)
 174 {
 175   return NS_OK;
 176 }
 177
 178 nsresult
 179 nsPlatformCharset::ConvertLocaleToCharsetUsingDeprecatedConfig(nsAString& locale, nsACString& oResult)
 180 {
 181   return NS_OK;
 182 }
 183
 184 nsresult
 185 nsPlatformCharset::VerifyCharset(nsCString &aCharset)
 186 {
 187   return NS_OK;
 188 }