From 16f504a9dca3fe3b70568f67b7d41241ae485288 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:49:04 +0200 Subject: Adding upstream version 7.0.6-dfsg. Signed-off-by: Daniel Baumann --- .../xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp | 164 +++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp (limited to 'src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp') diff --git a/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp b/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp new file mode 100644 index 00000000..364f71d5 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp @@ -0,0 +1,164 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * ***** 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 Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * 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 "nsByteArrayInputStream.h" +#include "nsMemory.h" + +NS_IMPL_THREADSAFE_ISUPPORTS2(nsByteArrayInputStream, nsIInputStream, nsIByteArrayInputStream) + +nsByteArrayInputStream::nsByteArrayInputStream (char *buffer, PRUint32 bytes) + : _buffer (buffer), _nbytes (bytes), _pos (0) +{ +} + +nsByteArrayInputStream::~nsByteArrayInputStream () +{ + if (_buffer != NULL) + nsMemory::Free (_buffer); +} + +NS_IMETHODIMP +nsByteArrayInputStream::Available (PRUint32* aResult) +{ + if (aResult == NULL) + return NS_ERROR_NULL_POINTER; + + if (_nbytes == 0 || _buffer == NULL) + *aResult = 0; + else + *aResult = _nbytes - _pos; + + return NS_OK; +} + +NS_IMETHODIMP +nsByteArrayInputStream::Read (char* aBuffer, PRUint32 aCount, PRUint32 *aNumRead) +{ + if (aBuffer == NULL || aNumRead == NULL) + return NS_ERROR_NULL_POINTER; + + if (_nbytes == 0) + return NS_ERROR_FAILURE; + + if (aCount == 0 || _pos == _nbytes) + *aNumRead = 0; + else + { + NS_ASSERTION (_buffer != NULL, "Stream buffer has been released - there's an ownership problem somewhere!"); + if (_buffer == NULL) + *aNumRead = 0; + else + if (aCount > _nbytes - _pos) + { + memcpy (aBuffer, &_buffer[_pos], *aNumRead = _nbytes - _pos); + _pos = _nbytes; + } + else + { + memcpy (aBuffer, &_buffer[_pos], *aNumRead = aCount); + _pos += aCount; + } + } + return NS_OK; +} + +NS_IMETHODIMP +nsByteArrayInputStream::ReadSegments(nsWriteSegmentFun writer, void * aClosure, PRUint32 aCount, PRUint32 *aNumRead) +{ + if (aNumRead == NULL) + return NS_ERROR_NULL_POINTER; + + if (_nbytes == 0) + return NS_ERROR_FAILURE; + + if (aCount == 0 || _pos == _nbytes) + *aNumRead = 0; + else { + NS_ASSERTION (_buffer != NULL, "Stream buffer has been released - there's an ownership problem somewhere!"); + PRUint32 readCount = PR_MIN(aCount, (_nbytes - _pos)); + if (_buffer == NULL) + *aNumRead = 0; + else { + nsresult rv = writer (this, aClosure, &_buffer[_pos], + _pos, readCount, aNumRead); + if (NS_SUCCEEDED(rv)) + _pos += *aNumRead; + } + } + + // do not propogate errors returned from writer! + return NS_OK; +} + +NS_IMETHODIMP +nsByteArrayInputStream::IsNonBlocking(PRBool *aNonBlocking) +{ + *aNonBlocking = PR_TRUE; + return NS_OK; +} + +NS_IMETHODIMP +nsByteArrayInputStream::Close () +{ + if (_buffer != NULL) + { + nsMemory::Free (_buffer); + _buffer = NULL; + _nbytes = 0; + } + else + return NS_ERROR_FAILURE; + + return NS_OK; +} + +NS_COM nsresult +NS_NewByteArrayInputStream (nsIByteArrayInputStream* *aResult, char * buffer, unsigned long bytes) +{ + if (aResult == NULL) + return NS_ERROR_NULL_POINTER; + + nsIByteArrayInputStream * stream = new nsByteArrayInputStream (buffer, bytes); + + if (!stream) + return NS_ERROR_OUT_OF_MEMORY; + + NS_ADDREF (stream); + *aResult = stream; + return NS_OK; +} -- cgit v1.2.3