mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-04 19:33:18 +00:00
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s): Jud Valeski & Brendan Eich
|
|
*/
|
|
|
|
#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;
|
|
}
|