178 lines
4.6 KiB
C++
178 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Alec Flett <alecf@netscape.com>
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*/
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#include "nsUnicharUtils.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtilCIID.h"
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#include "nsICaseConversion.h"
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#include "nsIServiceManager.h"
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#include "nsIObserver.h"
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#include "nsIObserverService.h"
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// global cache of the case conversion service
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static nsICaseConversion *gCaseConv = nsnull;
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static NS_DEFINE_CID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
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class nsShutdownObserver : public nsIObserver
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{
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public:
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nsShutdownObserver() { NS_INIT_REFCNT(); }
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virtual ~nsShutdownObserver() {}
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NS_DECL_ISUPPORTS
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NS_IMETHOD Observe(nsISupports *aSubject, const char *aTopic,
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const PRUnichar *aData)
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{
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if (nsCRT::strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)==0) {
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NS_IF_RELEASE(gCaseConv);
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}
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return NS_OK;
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}
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};
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NS_IMPL_ISUPPORTS1(nsShutdownObserver, nsIObserver)
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static nsresult NS_InitCaseConversion() {
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if (gCaseConv) return NS_OK;
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nsresult rv;
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rv = nsServiceManager::GetService(kUnicharUtilCID,
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NS_GET_IID(nsICaseConversion),
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(nsISupports**)&gCaseConv);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIObserverService> obs =
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do_GetService("@mozilla.org/observer-service;1", &rv);
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if (NS_SUCCEEDED(rv)) {
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nsShutdownObserver *observer = new nsShutdownObserver();
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if (observer)
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obs->AddObserver(observer, NS_XPCOM_SHUTDOWN_OBSERVER_ID, PR_FALSE);
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}
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}
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return NS_OK;
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}
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// to be turned on for bug 100214
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#if 0
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class ConvertToLowerCase
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{
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public:
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typedef PRUnichar value_type;
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PRUint32 write( const PRUnichar* aSource, PRUint32 aSourceLength)
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{
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NS_InitCaseConversion();
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gCaseConv->ToLower(aSource, NS_CONST_CAST(PRUnichar*,aSource), aSourceLength);
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return aSourceLength;
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}
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};
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void
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ToLowerCase( nsAString& aString)
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{
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nsAString::iterator fromBegin, fromEnd;
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ConvertToLowerCase converter;
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copy_string(aString.BeginWriting(fromBegin), aString.EndWriting(fromEnd), converter);
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}
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class ConvertToUpperCase
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{
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public:
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typedef PRUnichar value_type;
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PRUint32 write( const PRUnichar* aSource, PRUint32 aSourceLength)
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{
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NS_InitCaseConversion();
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gCaseConv->ToUpper(aSource, NS_CONST_CAST(PRUnichar*,aSource), aSourceLength);
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return aSourceLength;
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}
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};
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void
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ToUpperCase( nsAString& aString )
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{
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nsAString::iterator fromBegin, fromEnd;
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ConvertToUpperCase converter;
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copy_string(aString.BeginWriting(fromBegin), aString.EndWriting(fromEnd), converter);
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}
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PRBool
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CaseInsensitiveFindInReadable( const nsAString& aPattern, nsAString::const_iterator& aSearchStart, nsAString::const_iterator& aSearchEnd )
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{
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return FindInReadable(aPattern, aSearchStart, aSearchEnd, nsCaseInsensitiveStringComparator());
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}
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int
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nsCaseInsensitiveStringComparator::operator()( const PRUnichar* lhs, const PRUnichar* rhs, PRUint32 aLength ) const
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{
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NS_InitCaseConversion();
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PRInt32 result;
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gCaseConv->CaseInsensitiveCompare(lhs, rhs, aLength, &result);
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return result;
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}
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int
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nsCaseInsensitiveStringComparator::operator()( PRUnichar lhs, PRUnichar rhs ) const
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{
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if (lhs == rhs) return 0;
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NS_InitCaseConversion();
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gCaseConv->ToLower(lhs, &lhs);
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gCaseConv->ToLower(rhs, &rhs);
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if (lhs == rhs) return 0;
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if (lhs < rhs) return -1;
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return 1;
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}
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#endif
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PRUnichar
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ToLowerCase(PRUnichar aChar)
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{
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PRUnichar result;
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if (NS_FAILED(NS_InitCaseConversion()))
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return aChar;
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gCaseConv->ToLower(aChar, &result);
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return result;
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}
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PRUnichar
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ToUpperCase(PRUnichar aChar)
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{
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PRUnichar result;
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if (NS_FAILED(NS_InitCaseConversion()))
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return aChar;
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gCaseConv->ToUpper(aChar, &result);
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return result;
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}
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