mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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165 lines
4.9 KiB
C++
165 lines
4.9 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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 "nsDOMSerializer.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMClassInfo.h"
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#include "nsIOutputStream.h"
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#include "nsINode.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDocumentEncoder.h"
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#include "nsIContentSerializer.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsContentCID.h"
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#include "nsContentUtils.h"
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#include "nsDOMError.h"
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nsDOMSerializer::nsDOMSerializer()
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{
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}
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nsDOMSerializer::~nsDOMSerializer()
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{
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}
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// QueryInterface implementation for nsDOMSerializer
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NS_INTERFACE_MAP_BEGIN(nsDOMSerializer)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY(nsIDOMSerializer)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(XMLSerializer)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsDOMSerializer)
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NS_IMPL_RELEASE(nsDOMSerializer)
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static nsresult
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SetUpEncoder(nsIDOMNode *aRoot, const nsACString& aCharset,
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nsIDocumentEncoder **aEncoder)
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{
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*aEncoder = nsnull;
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nsresult rv;
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nsCOMPtr<nsIDocumentEncoder> encoder =
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do_CreateInstance(NS_DOC_ENCODER_CONTRACTID_BASE "text/xml", &rv);
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if (NS_FAILED(rv))
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return rv;
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PRBool entireDocument = PR_TRUE;
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nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(aRoot));
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if (!domDoc) {
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entireDocument = PR_FALSE;
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rv = aRoot->GetOwnerDocument(getter_AddRefs(domDoc));
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if (NS_FAILED(rv))
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return rv;
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}
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// This method will fail if no document
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rv = encoder->Init(domDoc, NS_LITERAL_STRING("text/xml"),
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nsIDocumentEncoder::OutputEncodeBasicEntities);
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if (NS_FAILED(rv))
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return rv;
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nsCAutoString charset(aCharset);
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if (charset.IsEmpty()) {
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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NS_ASSERTION(doc, "Need a document");
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charset = doc->GetDocumentCharacterSet();
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}
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rv = encoder->SetCharset(charset);
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if (NS_FAILED(rv))
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return rv;
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// If we are working on the entire document we do not need to
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// specify which part to serialize
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if (!entireDocument) {
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rv = encoder->SetNode(aRoot);
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}
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if (NS_SUCCEEDED(rv)) {
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*aEncoder = encoder.get();
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NS_ADDREF(*aEncoder);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsDOMSerializer::SerializeToString(nsIDOMNode *aRoot, nsAString& _retval)
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{
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NS_ENSURE_ARG_POINTER(aRoot);
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_retval.Truncate();
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if (!nsContentUtils::CanCallerAccess(aRoot)) {
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return NS_ERROR_DOM_SECURITY_ERR;
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}
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nsCOMPtr<nsIDocumentEncoder> encoder;
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nsresult rv = SetUpEncoder(aRoot, EmptyCString(), getter_AddRefs(encoder));
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if (NS_FAILED(rv))
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return rv;
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return encoder->EncodeToString(_retval);
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}
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NS_IMETHODIMP
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nsDOMSerializer::SerializeToStream(nsIDOMNode *aRoot,
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nsIOutputStream *aStream,
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const nsACString& aCharset)
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{
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NS_ENSURE_ARG_POINTER(aRoot);
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NS_ENSURE_ARG_POINTER(aStream);
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// The charset arg can be empty, in which case we get the document's
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// charset and use that when serializing.
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if (!nsContentUtils::CanCallerAccess(aRoot)) {
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return NS_ERROR_DOM_SECURITY_ERR;
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}
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nsCOMPtr<nsIDocumentEncoder> encoder;
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nsresult rv = SetUpEncoder(aRoot, aCharset, getter_AddRefs(encoder));
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if (NS_FAILED(rv))
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return rv;
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return encoder->EncodeToStream(aStream);
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}
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