mirror of
https://github.com/mozilla/gecko-dev.git
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124 lines
3.8 KiB
C++
124 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the XPT zip reader.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corp.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* John Bandhauer <jband@netscape.com>
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* Alec Flett <alecf@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsXPTZipLoader.h"
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#include "nsIZipReader.h"
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#include "nsXPIDLString.h"
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#include "nsString.h"
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#include "nsStringEnumerator.h"
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static const char gCacheContractID[] =
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"@mozilla.org/libjar/zip-reader-cache;1";
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static const PRUint32 gCacheSize = 1;
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nsXPTZipLoader::nsXPTZipLoader() {
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}
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NS_IMPL_ISUPPORTS1(nsXPTZipLoader, nsIXPTLoader)
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nsresult
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nsXPTZipLoader::LoadEntry(nsILocalFile* aFile,
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const char* aName,
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nsIInputStream** aResult)
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{
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nsCOMPtr<nsIZipReader> zip = dont_AddRef(GetZipReader(aFile));
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if (!zip)
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return NS_OK;
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return zip->GetInputStream(aName, aResult);
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}
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nsresult
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nsXPTZipLoader::EnumerateEntries(nsILocalFile* aFile,
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nsIXPTLoaderSink* aSink)
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{
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nsCOMPtr<nsIZipReader> zip = dont_AddRef(GetZipReader(aFile));
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if (!zip) {
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NS_WARNING("Could not get Zip Reader");
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return NS_OK;
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}
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nsCOMPtr<nsIUTF8StringEnumerator> entries;
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if (NS_FAILED(zip->FindEntries("*.xpt", getter_AddRefs(entries))) ||
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!entries) {
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// no problem, just no .xpt files in this archive
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return NS_OK;
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}
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PRBool hasMore;
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int index = 0;
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while (NS_SUCCEEDED(entries->HasMore(&hasMore)) && hasMore) {
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nsCAutoString itemName;
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if (NS_FAILED(entries->GetNext(itemName)))
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIInputStream> stream;
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if (NS_FAILED(zip->GetInputStream(itemName.get(), getter_AddRefs(stream))))
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return NS_ERROR_FAILURE;
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// ignore the result
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aSink->FoundEntry(itemName.get(), index++, stream);
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}
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return NS_OK;
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}
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nsIZipReader*
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nsXPTZipLoader::GetZipReader(nsILocalFile* file)
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{
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NS_ASSERTION(file, "bad file");
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if(!mCache)
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{
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mCache = do_CreateInstance(gCacheContractID);
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if(!mCache || NS_FAILED(mCache->Init(gCacheSize)))
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return nsnull;
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}
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nsIZipReader* reader = nsnull;
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if(NS_FAILED(mCache->GetZip(file, &reader)))
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return nsnull;
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return reader;
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}
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