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/* -*- 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_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;
}
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