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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.tar.xz virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp b/src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp new file mode 100644 index 00000000..12033da0 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/ds/nsUnicharBuffer.cpp @@ -0,0 +1,141 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is mozilla.org code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Pierre Phaneuf <pp@ludusdesign.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#include "nsUnicharBuffer.h" +#include "nsCRT.h" + +#define MIN_BUFFER_SIZE 32 + +UnicharBufferImpl::UnicharBufferImpl() + : mBuffer(NULL), mSpace(0), mLength(0) +{ +} + +NS_METHOD +UnicharBufferImpl::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult) +{ + if (aOuter) + return NS_ERROR_NO_AGGREGATION; + + UnicharBufferImpl* it = new UnicharBufferImpl(); + if (it == nsnull) + return NS_ERROR_OUT_OF_MEMORY; + + NS_ADDREF(it); + nsresult rv = it->QueryInterface(aIID, aResult); + NS_RELEASE(it); + return rv; +} + +NS_IMETHODIMP +UnicharBufferImpl::Init(PRUint32 aBufferSize) +{ + if (aBufferSize < MIN_BUFFER_SIZE) { + aBufferSize = MIN_BUFFER_SIZE; + } + mSpace = aBufferSize; + mLength = 0; + mBuffer = new PRUnichar[aBufferSize]; + return mBuffer ? NS_OK : NS_ERROR_OUT_OF_MEMORY; +} + +NS_IMPL_ISUPPORTS1(UnicharBufferImpl, nsIUnicharBuffer) + +UnicharBufferImpl::~UnicharBufferImpl() +{ + if (nsnull != mBuffer) { + delete[] mBuffer; + mBuffer = nsnull; + } + mLength = 0; +} + +NS_IMETHODIMP_(PRInt32) +UnicharBufferImpl::GetLength() const +{ + return mLength; +} + +NS_IMETHODIMP_(PRInt32) +UnicharBufferImpl::GetBufferSize() const +{ + return mSpace; +} + +NS_IMETHODIMP_(PRUnichar*) +UnicharBufferImpl::GetBuffer() const +{ + return mBuffer; +} + +NS_IMETHODIMP_(PRBool) +UnicharBufferImpl::Grow(PRInt32 aNewSize) +{ + if (PRUint32(aNewSize) < MIN_BUFFER_SIZE) { + aNewSize = MIN_BUFFER_SIZE; + } + PRUnichar* newbuf = new PRUnichar[aNewSize]; + if (nsnull != newbuf) { + if (0 != mLength) { + memcpy(newbuf, mBuffer, mLength * sizeof(PRUnichar)); + } + delete[] mBuffer; + mBuffer = newbuf; + return PR_TRUE; + } + return PR_FALSE; +} + +NS_COM nsresult +NS_NewUnicharBuffer(nsIUnicharBuffer** aInstancePtrResult, + nsISupports* aOuter, + PRUint32 aBufferSize) +{ + nsresult rv; + nsIUnicharBuffer* buf; + rv = UnicharBufferImpl::Create(aOuter, NS_GET_IID(nsIUnicharBuffer), + (void**)&buf); + if (NS_FAILED(rv)) return rv; + rv = buf->Init(aBufferSize); + if (NS_FAILED(rv)) { + NS_RELEASE(buf); + return rv; + } + *aInstancePtrResult = buf; + return rv; +} |