97 строки
2.4 KiB
C++
97 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Encoding.h"
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#include "nsCharsetAlias.h"
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// for NS_ERROR_UCONV_NOCONV
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#include "nsCharsetConverterManager.h"
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#include "nsUConvPropertySearch.h"
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using namespace mozilla;
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//
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static const nsUConvProp kAliases[] = {
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#include "charsetalias.properties.h"
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};
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//--------------------------------------------------------------
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// static
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nsresult
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nsCharsetAlias::GetPreferredInternal(const nsACString& aAlias,
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nsACString& oResult)
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{
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// First check charsetalias.properties and if there is no match, continue to
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// call Encoding::ForLabel.
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nsAutoCString key(aAlias);
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ToLowerCase(key);
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nsresult rv = nsUConvPropertySearch::SearchPropertyValue(kAliases,
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ArrayLength(kAliases), key, oResult);
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if (NS_SUCCEEDED(rv)) {
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return NS_OK;
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}
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const Encoding* encoding = Encoding::ForLabel(key);
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if (!encoding)
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return NS_ERROR_NOT_AVAILABLE;
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encoding->Name(oResult);
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return NS_OK;
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}
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//--------------------------------------------------------------
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// static
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nsresult
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nsCharsetAlias::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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nsresult res = GetPreferredInternal(aAlias, oResult);
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if (NS_FAILED(res))
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return res;
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if (nsCharsetConverterManager::IsInternal(oResult))
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return NS_ERROR_UCONV_NOCONV;
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return res;
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}
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//--------------------------------------------------------------
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// static
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nsresult
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nsCharsetAlias::Equals(const nsACString& aCharset1,
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const nsACString& aCharset2, bool* 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 = 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 = false;
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return res;
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}
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*oResult = false;
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nsAutoCString name1;
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res = GetPreferredInternal(aCharset1, name1);
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if (NS_FAILED(res))
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return res;
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nsAutoCString name2;
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res = GetPreferredInternal(aCharset2, name2);
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if (NS_FAILED(res))
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return res;
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*oResult = name1.Equals(name2);
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return NS_OK;
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}
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