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