LCOV - app.info - xpcom/ds/nsUnicharBuffer.cpp

LCOV - code coverage report
| Current view: | directory - xpcom/ds - nsUnicharBuffer.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 53 | 36 | 67.9 %
| Date: | 2012-04-21 | Functions: | 12 | 10 | 83.3 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is mozilla.org code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  * Netscape Communications Corporation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
          20                 :  * the Initial Developer. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *   Pierre Phaneuf <pp@ludusdesign.com>
          24                 :  *
          25                 :  * Alternatively, the contents of this file may be used under the terms of
          26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
          27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          29                 :  * of those above. If you wish to allow use of your version of this file only
          30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          31                 :  * use your version of this file under the terms of the MPL, indicate your
          32                 :  * decision by deleting the provisions above and replace them with the notice
          33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          34                 :  * the provisions above, a recipient may use your version of this file under
          35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          36                 :  *
          37                 :  * ***** END LICENSE BLOCK ***** */
          38                 :
          39                 : #include "nsUnicharBuffer.h"
          40                 : #include "nsCRT.h"
          41                 :
          42                 : #define MIN_BUFFER_SIZE 32
          43                 :
          44            2738 : UnicharBufferImpl::UnicharBufferImpl()
          45            2738 :   : mBuffer(NULL), mSpace(0), mLength(0)
          46                 : {
          47            2738 : }
          48                 :
          49                 : NS_METHOD
          50            2738 : UnicharBufferImpl::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
          51                 : {
          52            2738 :   if (aOuter)
          53               0 :     return NS_ERROR_NO_AGGREGATION;
          54                 :
          55            2738 :   UnicharBufferImpl* it = new UnicharBufferImpl();
          56            2738 :   if (it == nsnull)
          57               0 :     return NS_ERROR_OUT_OF_MEMORY;
          58                 :
          59            2738 :   NS_ADDREF(it);
          60            2738 :   nsresult rv = it->QueryInterface(aIID, aResult);
          61            2738 :   NS_RELEASE(it);
          62            2738 :   return rv;
          63                 : }
          64                 :
          65                 : NS_IMETHODIMP
          66            2738 : UnicharBufferImpl::Init(PRUint32 aBufferSize)
          67                 : {
          68            2738 :   if (aBufferSize < MIN_BUFFER_SIZE) {
          69              24 :     aBufferSize = MIN_BUFFER_SIZE;
          70                 :   }
          71            2738 :   mSpace = aBufferSize;
          72            2738 :   mLength = 0;
          73            5476 :   mBuffer = new PRUnichar[aBufferSize];
          74            2738 :   return mBuffer ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
          75                 : }
          76                 :
          77           24642 : NS_IMPL_ISUPPORTS1(UnicharBufferImpl, nsIUnicharBuffer)
          78                 :
          79            2738 : UnicharBufferImpl::~UnicharBufferImpl()
          80                 : {
          81            2738 :   if (nsnull != mBuffer) {
          82            2738 :     delete[] mBuffer;
          83            2738 :     mBuffer = nsnull;
          84                 :   }
          85            2738 :   mLength = 0;
          86            2738 : }
          87                 :
          88                 : NS_IMETHODIMP_(PRInt32)
          89               0 : UnicharBufferImpl::GetLength() const
          90                 : {
          91               0 :   return mLength;
          92                 : }
          93                 :
          94                 : NS_IMETHODIMP_(PRInt32)
          95            9233 : UnicharBufferImpl::GetBufferSize() const
          96                 : {
          97            9233 :   return mSpace;
          98                 : }
          99                 :
         100                 : NS_IMETHODIMP_(PRUnichar*)
         101           12574 : UnicharBufferImpl::GetBuffer() const
         102                 : {
         103           12574 :   return mBuffer;
         104                 : }
         105                 :
         106                 : NS_IMETHODIMP_(bool)
         107               0 : UnicharBufferImpl::Grow(PRInt32 aNewSize)
         108                 : {
         109               0 :   if (PRUint32(aNewSize) < MIN_BUFFER_SIZE) {
         110               0 :     aNewSize = MIN_BUFFER_SIZE;
         111                 :   }
         112               0 :   PRUnichar* newbuf = new PRUnichar[aNewSize];
         113               0 :   if (nsnull != newbuf) {
         114               0 :     if (0 != mLength) {
         115               0 :       memcpy(newbuf, mBuffer, mLength * sizeof(PRUnichar));
         116                 :     }
         117               0 :     delete[] mBuffer;
         118               0 :     mBuffer = newbuf;
         119               0 :     return true;
         120                 :   }
         121               0 :   return false;
         122                 : }
         123                 :
         124                 : nsresult
         125            2738 : NS_NewUnicharBuffer(nsIUnicharBuffer** aInstancePtrResult,
         126                 :                     nsISupports* aOuter,
         127                 :                     PRUint32 aBufferSize)
         128                 : {
         129                 :   nsresult rv;
         130                 :   nsIUnicharBuffer* buf;
         131                 :   rv = UnicharBufferImpl::Create(aOuter, NS_GET_IID(nsIUnicharBuffer),
         132            2738 :                                  (void**)&buf);
         133            2738 :   if (NS_FAILED(rv)) return rv;
         134            2738 :   rv = buf->Init(aBufferSize);
         135            2738 :   if (NS_FAILED(rv)) {
         136               0 :     NS_RELEASE(buf);
         137               0 :     return rv;
         138                 :   }
         139            2738 :   *aInstancePtrResult = buf;
         140            2738 :   return rv;
         141                 : }

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