DXR will be turned off on Tuesday, December 29th. It will redirect to Searchfox.
See the announcement on Discourse.

DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "mozilla/Util.h"

#include "nsIPlatformCharset.h"
#include "nsUConvPropertySearch.h"
#include "pratom.h"
#include <windows.h>
#include "nsWin32Locale.h"
#include "nsCOMPtr.h"
#include "nsReadableUtils.h"
#include "nsLocaleCID.h"
#include "nsServiceManagerUtils.h"
#include "nsPlatformCharset.h"
#include "nsEncoderDecoderUtils.h"

using namespace mozilla;

static const char* kWinCharsets[][3] = {
#include "wincharset.properties.h"
};

NS_IMPL_ISUPPORTS1(nsPlatformCharset, nsIPlatformCharset)

nsPlatformCharset::nsPlatformCharset()
{
  nsAutoString acpKey(NS_LITERAL_STRING("acp."));
  acpKey.AppendInt(PRInt32(::GetACP() & 0x00FFFF), 10);
  MapToCharset(acpKey, mCharset);
}

nsPlatformCharset::~nsPlatformCharset()
{
}

nsresult
nsPlatformCharset::MapToCharset(nsAString& inANSICodePage, nsACString& outCharset)
{
  nsCAutoString key;
  LossyCopyUTF16toASCII(inANSICodePage, key);

  nsresult rv = nsUConvPropertySearch::SearchPropertyValue(kWinCharsets,
      ArrayLength(kWinCharsets), key, outCharset);
  if (NS_FAILED(rv)) {
    outCharset.AssignLiteral("windows-1252");
    return NS_SUCCESS_USING_FALLBACK_LOCALE;
  }
  return rv;
}

NS_IMETHODIMP 
nsPlatformCharset::GetCharset(nsPlatformCharsetSel selector,
                              nsACString& oResult)
{
  oResult = mCharset;
  return NS_OK;
}

NS_IMETHODIMP
nsPlatformCharset::GetDefaultCharsetForLocale(const nsAString& localeName, nsACString& oResult)
{
  LCID                      localeAsLCID;

  //
  // convert locale name to a code page (through the LCID)
  //
  nsresult rv;
  oResult.Truncate();

  rv = nsWin32Locale::GetPlatformLocale(localeName, &localeAsLCID);
  if (NS_FAILED(rv)) { return rv; }

  PRUnichar acp_name[6];
  if (GetLocaleInfoW(localeAsLCID, LOCALE_IDEFAULTANSICODEPAGE, acp_name,
                     ArrayLength(acp_name))==0) {
    return NS_ERROR_FAILURE; 
  }
  nsAutoString acp_key(NS_LITERAL_STRING("acp."));
  acp_key.Append(acp_name);

  return MapToCharset(acp_key, oResult);
}

NS_IMETHODIMP 
nsPlatformCharset::Init()
{
  return NS_OK;
}

nsresult
nsPlatformCharset::InitGetCharset(nsACString &oString)
{
  return NS_OK;
}

nsresult
nsPlatformCharset::ConvertLocaleToCharsetUsingDeprecatedConfig(nsACString& locale, nsACString& oResult)
{
  return NS_OK;
}

nsresult
nsPlatformCharset::VerifyCharset(nsCString &aCharset)
{
  return NS_OK;
}