зеркало из https://github.com/mozilla/pjs.git
122 строки
3.3 KiB
C++
122 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1
|
|
*
|
|
* 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 the XPT zip reader.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corp.
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* John Bandhauer <jband@netscape.com>
|
|
* Alec Flett <alecf@netscape.com>
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
#include "nsXPTZipLoader.h"
|
|
#include "nsIZipReader.h"
|
|
#include "nsXPIDLString.h"
|
|
#include "nsISimpleEnumerator.h"
|
|
|
|
static const char gCacheContractID[] =
|
|
"@mozilla.org/libjar/zip-reader-cache;1";
|
|
static const PRUint32 gCacheSize = 1;
|
|
|
|
nsXPTZipLoader::nsXPTZipLoader() {
|
|
NS_INIT_ISUPPORTS();
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(nsXPTZipLoader, nsIXPTLoader)
|
|
|
|
nsresult
|
|
nsXPTZipLoader::LoadEntry(nsILocalFile* aFile,
|
|
const char* aName,
|
|
nsIInputStream** aResult)
|
|
{
|
|
nsCOMPtr<nsIZipReader> zip = dont_AddRef(GetZipReader(aFile));
|
|
|
|
if (!zip)
|
|
return NS_OK;
|
|
|
|
return zip->GetInputStream(aName, aResult);
|
|
}
|
|
|
|
nsresult
|
|
nsXPTZipLoader::EnumerateEntries(nsILocalFile* aFile,
|
|
nsIXPTLoaderSink* aSink)
|
|
{
|
|
nsCOMPtr<nsIZipReader> zip = dont_AddRef(GetZipReader(aFile));
|
|
|
|
if (!zip) {
|
|
NS_WARNING("Could not get Zip Reader");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> entries;
|
|
if (NS_FAILED(zip->FindEntries("*.xpt", getter_AddRefs(entries))) ||
|
|
!entries) {
|
|
// no problem, just no .xpt files in this archive
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
PRBool hasMore;
|
|
while (NS_SUCCEEDED(entries->HasMoreElements(&hasMore)) && hasMore) {
|
|
int index=0;
|
|
|
|
nsCOMPtr<nsISupports> sup;
|
|
if (NS_FAILED(entries->GetNext(getter_AddRefs(sup))) || !sup)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
nsCOMPtr<nsIZipEntry> entry = do_QueryInterface(sup);
|
|
if (!entry)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
nsXPIDLCString itemName;
|
|
if (NS_FAILED(entry->GetName(getter_Copies(itemName))))
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
if (NS_FAILED(zip->GetInputStream(itemName, getter_AddRefs(stream))))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// ignore the result
|
|
aSink->FoundEntry(itemName, index++, stream);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIZipReader*
|
|
nsXPTZipLoader::GetZipReader(nsILocalFile* file)
|
|
{
|
|
NS_ASSERTION(file, "bad file");
|
|
|
|
if(!mCache)
|
|
{
|
|
mCache = do_CreateInstance(gCacheContractID);
|
|
if(!mCache || NS_FAILED(mCache->Init(gCacheSize)))
|
|
return nsnull;
|
|
}
|
|
|
|
nsIZipReader* reader = nsnull;
|
|
|
|
if(NS_FAILED(mCache->GetZip(file, &reader)))
|
|
return nsnull;
|
|
|
|
return reader;
|
|
}
|