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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
#include "mozilla/ArrayUtils.h"
#include "mozilla/Encoding.h"
#include "nsCharsetAlias.h"
// for NS_ERROR_UCONV_NOCONV
#include "nsCharsetConverterManager.h"
#include "nsUConvPropertySearch.h"
using namespace mozilla;
//
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 Encoding::ForLabel.
nsAutoCString key(aAlias);
ToLowerCase(key);
nsresult rv = nsUConvPropertySearch::SearchPropertyValue(
kAliases, ArrayLength(kAliases), key, oResult);
if (NS_SUCCEEDED(rv)) {
return NS_OK;
}
const Encoding* encoding = Encoding::ForLabel(key);
if (!encoding) return NS_ERROR_NOT_AVAILABLE;
encoding->Name(oResult);
return NS_OK;
}
//--------------------------------------------------------------
// 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;
}