mirror of
https://github.com/rn10950/RetroZilla.git
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151 lines
5.3 KiB
C++
151 lines
5.3 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsICharsetAlias.h"
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#include "pratom.h"
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// for NS_IMPL_IDS only
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#include "nsIPlatformCharset.h"
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#include "nsUConvDll.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsGREResProperties.h"
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#include "nsITimelineService.h"
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#include "nsCharsetAlias.h"
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//--------------------------------------------------------------
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NS_IMPL_ISUPPORTS1(nsCharsetAlias2, nsICharsetAlias)
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//--------------------------------------------------------------
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nsCharsetAlias2::nsCharsetAlias2()
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{
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mDelegate = nsnull; // delay the load of mDelegate untill we need it.
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}
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//--------------------------------------------------------------
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nsCharsetAlias2::~nsCharsetAlias2()
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{
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if(mDelegate)
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delete mDelegate;
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP nsCharsetAlias2::GetPreferred(const nsACString& aAlias,
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nsACString& oResult)
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{
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if (aAlias.IsEmpty()) return NS_ERROR_NULL_POINTER;
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NS_TIMELINE_START_TIMER("nsCharsetAlias2:GetPreferred");
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nsCAutoString aKey(aAlias);
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ToLowerCase(aKey);
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oResult.Truncate();
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// Delay loading charsetalias.properties by hardcoding the most
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// frequent aliases. Note that it's possible to recur in to this
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// function *while loading* charsetalias.properties (see bug 190951),
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// so we might have an |mDelegate| already that isn't valid yet, but
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// the load is guaranteed to be "UTF-8" so things will be OK.
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if(aKey.EqualsLiteral("utf-8")) {
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oResult.AssignLiteral("UTF-8");
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NS_TIMELINE_STOP_TIMER("nsCharsetAlias2:GetPreferred");
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return NS_OK;
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}
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if(aKey.EqualsLiteral("iso-8859-1")) {
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oResult.AssignLiteral("ISO-8859-1");
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NS_TIMELINE_STOP_TIMER("nsCharsetAlias2:GetPreferred");
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return NS_OK;
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}
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if(aKey.EqualsLiteral("x-sjis") ||
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aKey.EqualsLiteral("shift_jis")) {
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oResult.AssignLiteral("Shift_JIS");
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NS_TIMELINE_STOP_TIMER("nsCharsetAlias2:GetPreferred");
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return NS_OK;
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}
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if(!mDelegate) {
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//load charsetalias.properties string bundle with all remaining aliases
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// we may need to protect the following section with a lock so we won't call the
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// 'new nsGREResProperties' from two different threads
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mDelegate = new nsGREResProperties( NS_LITERAL_CSTRING("charsetalias.properties") );
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NS_ASSERTION(mDelegate, "cannot create nsGREResProperties");
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if(nsnull == mDelegate)
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_TIMELINE_STOP_TIMER("nsCharsetAlias2:GetPreferred");
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NS_TIMELINE_MARK_TIMER("nsCharsetAlias2:GetPreferred");
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// hack for now, have to fix nsGREResProperties, but we can't until
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// string bundles use UTF8 keys
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nsAutoString result;
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nsresult rv = mDelegate->Get(NS_ConvertASCIItoUCS2(aKey), result);
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LossyAppendUTF16toASCII(result, oResult);
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return rv;
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsCharsetAlias2::Equals(const nsACString& aCharset1,
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const nsACString& aCharset2, PRBool* oResult)
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{
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nsresult res = NS_OK;
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if(aCharset1.Equals(aCharset2, nsCaseInsensitiveCStringComparator())) {
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*oResult = PR_TRUE;
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return res;
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}
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if(aCharset1.IsEmpty() || aCharset2.IsEmpty()) {
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*oResult = PR_FALSE;
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return res;
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}
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*oResult = PR_FALSE;
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nsCAutoString name1;
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nsCAutoString name2;
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res = this->GetPreferred(aCharset1, name1);
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if(NS_SUCCEEDED(res)) {
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res = this->GetPreferred(aCharset2, name2);
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if(NS_SUCCEEDED(res)) {
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*oResult = name1.Equals(name2, nsCaseInsensitiveCStringComparator());
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}
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}
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return res;
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}
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