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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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):
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsScriptableInputStream.h"
#include "nsMemory.h"
NS_IMPL_ISUPPORTS1(nsScriptableInputStream, nsIScriptableInputStream)
// nsIBaseStream methods
NS_IMETHODIMP
nsScriptableInputStream::Close(void) {
if (!mInputStream) return NS_ERROR_NOT_INITIALIZED;
return mInputStream->Close();
}
// nsIScriptableInputStream methods
NS_IMETHODIMP
nsScriptableInputStream::Init(nsIInputStream *aInputStream) {
if (!aInputStream) return NS_ERROR_NULL_POINTER;
mInputStream = aInputStream;
return NS_OK;
}
NS_IMETHODIMP
nsScriptableInputStream::Available(PRUint32 *_retval) {
if (!mInputStream) return NS_ERROR_NOT_INITIALIZED;
return mInputStream->Available(_retval);
}
NS_IMETHODIMP
nsScriptableInputStream::Read(PRUint32 aCount, char **_retval) {
nsresult rv = NS_OK;
PRUint32 count = 0;
char *buffer = nsnull;
if (!mInputStream) return NS_ERROR_NOT_INITIALIZED;
rv = mInputStream->Available(&count);
if (NS_FAILED(rv)) return rv;
count = PR_MIN(count, aCount);
buffer = (char*)nsMemory::Alloc(count+1); // make room for '\0'
if (!buffer) return NS_ERROR_OUT_OF_MEMORY;
PRUint32 amtRead = 0;
rv = mInputStream->Read(buffer, count, &amtRead);
if (NS_FAILED(rv)) {
nsMemory::Free(buffer);
return rv;
}
buffer[amtRead] = '\0';
*_retval = buffer;
return NS_OK;
}
NS_METHOD
nsScriptableInputStream::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult) {
if (aOuter) return NS_ERROR_NO_AGGREGATION;
nsScriptableInputStream *sis = new nsScriptableInputStream();
if (!sis) return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(sis);
nsresult rv = sis->QueryInterface(aIID, aResult);
NS_RELEASE(sis);
return rv;
}
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