зеркало из https://github.com/mozilla/pjs.git
103 строки
3.4 KiB
C++
103 строки
3.4 KiB
C++
/* -*- 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.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 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 "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;
|
|
}
|