mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
265 lines
9.0 KiB
C++
265 lines
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; 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 Robert Sayre.
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* Portions created by the Initial Developer are Copyright (C) 2006
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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 "nsString.h"
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#include "nsIComponentManager.h"
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#include "nsCOMPtr.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsXPIDLString.h"
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#include "nsScriptLoader.h"
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#include "nsEscape.h"
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#include "nsIParser.h"
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#include "nsIDTD.h"
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#include "nsNetCID.h"
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#include "nsNetUtil.h"
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#include "nsParserCIID.h"
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#include "nsContentUtils.h"
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#include "nsIContentSink.h"
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#include "nsIDocumentEncoder.h"
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#include "nsIDOMDocumentFragment.h"
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#include "nsIFragmentContentSink.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMElement.h"
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#include "nsIDocument.h"
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#include "nsIContent.h"
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#include "nsAttrName.h"
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#include "nsHTMLParts.h"
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#include "nsContentCID.h"
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#include "nsIScriptableUnescapeHTML.h"
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#include "nsParserUtils.h"
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#include "nsAutoPtr.h"
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#include "nsTreeSanitizer.h"
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#include "nsHtml5Module.h"
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#define XHTML_DIV_TAG "div xmlns=\"http://www.w3.org/1999/xhtml\""
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NS_IMPL_ISUPPORTS2(nsParserUtils,
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nsIScriptableUnescapeHTML,
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nsIParserUtils)
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static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
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NS_IMETHODIMP
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nsParserUtils::ConvertToPlainText(const nsAString& aFromStr,
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PRUint32 aFlags,
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PRUint32 aWrapCol,
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nsAString& aToStr)
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{
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return nsContentUtils::ConvertToPlainText(aFromStr,
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aToStr,
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aFlags,
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aWrapCol);
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}
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NS_IMETHODIMP
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nsParserUtils::Unescape(const nsAString& aFromStr,
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nsAString& aToStr)
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{
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return nsContentUtils::ConvertToPlainText(aFromStr,
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aToStr,
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nsIDocumentEncoder::OutputSelectionOnly |
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nsIDocumentEncoder::OutputAbsoluteLinks,
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0);
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}
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NS_IMETHODIMP
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nsParserUtils::Sanitize(const nsAString& aFromStr,
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PRUint32 aFlags,
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nsAString& aToStr)
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{
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nsCOMPtr<nsIURI> uri;
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NS_NewURI(getter_AddRefs(uri), "about:blank");
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nsCOMPtr<nsIPrincipal> principal =
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do_CreateInstance("@mozilla.org/nullprincipal;1");
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nsCOMPtr<nsIDOMDocument> domDocument;
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nsresult rv = nsContentUtils::CreateDocument(EmptyString(),
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EmptyString(),
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nsnull,
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uri,
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uri,
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principal,
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nsnull,
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DocumentFlavorHTML,
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getter_AddRefs(domDocument));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDocument> document = do_QueryInterface(domDocument);
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rv = nsContentUtils::ParseDocumentHTML(aFromStr, document, false);
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NS_ENSURE_SUCCESS(rv, rv);
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nsTreeSanitizer sanitizer(aFlags);
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sanitizer.Sanitize(document);
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nsCOMPtr<nsIDocumentEncoder> encoder =
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do_CreateInstance(NS_DOC_ENCODER_CONTRACTID_BASE "text/html");
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encoder->NativeInit(document,
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NS_LITERAL_STRING("text/html"),
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nsIDocumentEncoder::OutputDontRewriteEncodingDeclaration |
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nsIDocumentEncoder::OutputNoScriptContent |
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nsIDocumentEncoder::OutputEncodeBasicEntities |
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nsIDocumentEncoder::OutputLFLineBreak |
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nsIDocumentEncoder::OutputRaw);
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return encoder->EncodeToString(aToStr);
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}
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NS_IMETHODIMP
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nsParserUtils::ParseFragment(const nsAString& aFragment,
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bool aIsXML,
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nsIURI* aBaseURI,
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nsIDOMElement* aContextElement,
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nsIDOMDocumentFragment** aReturn)
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{
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return nsParserUtils::ParseFragment(aFragment,
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0,
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aIsXML,
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aBaseURI,
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aContextElement,
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aReturn);
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}
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NS_IMETHODIMP
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nsParserUtils::ParseFragment(const nsAString& aFragment,
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PRUint32 aFlags,
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bool aIsXML,
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nsIURI* aBaseURI,
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nsIDOMElement* aContextElement,
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nsIDOMDocumentFragment** aReturn)
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{
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NS_ENSURE_ARG(aContextElement);
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*aReturn = nsnull;
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nsresult rv;
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nsCOMPtr<nsIParser> parser = do_CreateInstance(kCParserCID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDocument> document;
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nsCOMPtr<nsIDOMDocument> domDocument;
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nsCOMPtr<nsIDOMNode> contextNode;
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contextNode = do_QueryInterface(aContextElement);
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contextNode->GetOwnerDocument(getter_AddRefs(domDocument));
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document = do_QueryInterface(domDocument);
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NS_ENSURE_TRUE(document, NS_ERROR_NOT_AVAILABLE);
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// stop scripts
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nsRefPtr<nsScriptLoader> loader;
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bool scripts_enabled = false;
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if (document) {
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loader = document->ScriptLoader();
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scripts_enabled = loader->GetEnabled();
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}
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if (scripts_enabled) {
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loader->SetEnabled(false);
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}
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// Wrap things in a div or body for parsing, but it won't show up in
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// the fragment.
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nsAutoTArray<nsString, 2> tagStack;
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nsCAutoString base, spec;
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if (aIsXML) {
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// XHTML
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if (aBaseURI) {
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base.Append(NS_LITERAL_CSTRING(XHTML_DIV_TAG));
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base.Append(NS_LITERAL_CSTRING(" xml:base=\""));
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aBaseURI->GetSpec(spec);
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// nsEscapeHTML is good enough, because we only need to get
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// quotes, ampersands, and angle brackets
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char* escapedSpec = nsEscapeHTML(spec.get());
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if (escapedSpec)
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base += escapedSpec;
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NS_Free(escapedSpec);
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base.Append(NS_LITERAL_CSTRING("\""));
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tagStack.AppendElement(NS_ConvertUTF8toUTF16(base));
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} else {
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tagStack.AppendElement(NS_LITERAL_STRING(XHTML_DIV_TAG));
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}
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}
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIContent> fragment;
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if (aIsXML) {
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rv = nsContentUtils::ParseFragmentXML(aFragment,
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document,
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tagStack,
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true,
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aReturn);
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fragment = do_QueryInterface(*aReturn);
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} else {
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NS_NewDocumentFragment(aReturn,
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document->NodeInfoManager());
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fragment = do_QueryInterface(*aReturn);
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rv = nsContentUtils::ParseFragmentHTML(aFragment,
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fragment,
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nsGkAtoms::body,
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kNameSpaceID_XHTML,
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false,
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true);
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// Now, set the base URI on all subtree roots.
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if (aBaseURI) {
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aBaseURI->GetSpec(spec);
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nsAutoString spec16;
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CopyUTF8toUTF16(spec, spec16);
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nsIContent* node = fragment->GetFirstChild();
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while (node) {
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if (node->IsElement()) {
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node->SetAttr(kNameSpaceID_XML,
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nsGkAtoms::base,
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nsGkAtoms::xml,
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spec16,
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false);
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}
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node = node->GetNextSibling();
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}
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}
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}
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if (fragment) {
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nsTreeSanitizer sanitizer(aFlags);
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sanitizer.Sanitize(fragment);
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}
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}
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if (scripts_enabled)
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loader->SetEnabled(true);
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return rv;
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}
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