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/*
* Copyright (C) 2000 Peter Kelly (pmk@post.com)
* Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved.
* Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
* (http://www.torchmobile.com/)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_XML_PARSER_XML_DOCUMENT_PARSER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_XML_PARSER_XML_DOCUMENT_PARSER_H_
#include <libxml/tree.h>
#include <memory>
#include "third_party/blink/renderer/core/dom/parser_content_policy.h"
#include "third_party/blink/renderer/core/dom/scriptable_document_parser.h"
#include "third_party/blink/renderer/core/script/xml_parser_script_runner.h"
#include "third_party/blink/renderer/core/script/xml_parser_script_runner_host.h"
#include "third_party/blink/renderer/core/xml/parser/xml_errors.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_client.h"
#include "third_party/blink/renderer/platform/text/segmented_string.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/text/cstring.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"
namespace blink {
class ContainerNode;
class Document;
class DocumentFragment;
class Element;
class LocalFrameView;
class Text;
class XMLParserContext : public RefCounted<XMLParserContext> {
USING_FAST_MALLOC(XMLParserContext);
public:
static scoped_refptr<XMLParserContext>
CreateMemoryParser(xmlSAXHandlerPtr, void* user_data, const CString& chunk);
static scoped_refptr<XMLParserContext> CreateStringParser(xmlSAXHandlerPtr,
void* user_data);
~XMLParserContext();
xmlParserCtxtPtr Context() const { return context_; }
private:
XMLParserContext(xmlParserCtxtPtr context) : context_(context) {}
xmlParserCtxtPtr context_;
};
class XMLDocumentParser final : public ScriptableDocumentParser,
public XMLParserScriptRunnerHost {
USING_GARBAGE_COLLECTED_MIXIN(XMLDocumentParser);
public:
explicit XMLDocumentParser(Document&, LocalFrameView* = nullptr);
XMLDocumentParser(DocumentFragment*, Element*, ParserContentPolicy);
~XMLDocumentParser() override;
void Trace(blink::Visitor*) override;
// Exposed for callbacks:
void HandleError(XMLErrors::ErrorType, const char* message, TextPosition);
void SetIsXHTMLDocument(bool is_xhtml) { is_xhtml_document_ = is_xhtml; }
bool IsXHTMLDocument() const { return is_xhtml_document_; }
bool IsCurrentlyParsing8BitChunk() {
return is_currently_parsing8_bit_chunk_;
}
static bool ParseDocumentFragment(
const String&,
DocumentFragment*,
Element* parent = nullptr,
ParserContentPolicy = kAllowScriptingContent);
// Used by the XMLHttpRequest to check if the responseXML was well formed.
bool WellFormed() const override { return !saw_error_; }
TextPosition GetTextPosition() const override;
static bool SupportsXMLVersion(const String&);
class PendingCallback {
USING_FAST_MALLOC(PendingCallback);
public:
virtual ~PendingCallback() = default;
virtual void Call(XMLDocumentParser*) = 0;
};
void SetScriptStartPosition(TextPosition);
private:
// From DocumentParser
void insert(const String&) override { NOTREACHED(); }
void Append(const String&) override;
void Finish() override;
bool IsWaitingForScripts() const override;
void StopParsing() override;
void Detach() override;
OrdinalNumber LineNumber() const override;
OrdinalNumber ColumnNumber() const;
// XMLParserScriptRunnerHost
void NotifyScriptExecuted() override;
void end();
void PauseParsing();
void ResumeParsing();
bool AppendFragmentSource(const String&);
public:
// Callbacks from parser SAX
PRINTF_FORMAT(3, 0)
void GetError(XMLErrors::ErrorType, const char* message, va_list args);
void StartElementNs(const AtomicString& local_name,
const AtomicString& prefix,
const AtomicString& uri,
int namespace_count,
const xmlChar** namespaces,
int attribute_count,
int defaulted_count,
const xmlChar** libxml_attributes);
void EndElementNs();
void Characters(const xmlChar* chars, int length);
void GetProcessingInstruction(const String& target, const String& data);
void CdataBlock(const String&);
void Comment(const String&);
void StartDocument(const String& version,
const String& encoding,
int standalone);
void InternalSubset(const String& name,
const String& external_id,
const String& system_id);
void EndDocument();
private:
void InitializeParserContext(const CString& chunk = CString());
void PushCurrentNode(ContainerNode*);
void PopCurrentNode();
void ClearCurrentNodeStack();
void InsertErrorMessageBlock();
void CreateLeafTextNodeIfNeeded();
bool UpdateLeafTextNode();
void DoWrite(const String&);
void DoEnd();
SegmentedString original_source_for_transform_;
xmlParserCtxtPtr Context() const {
return context_ ? context_->Context() : nullptr;
}
scoped_refptr<XMLParserContext> context_;
Deque<std::unique_ptr<PendingCallback>> pending_callbacks_;
Vector<xmlChar> buffered_text_;
Member<ContainerNode> current_node_;
HeapVector<Member<ContainerNode>> current_node_stack_;
Member<Text> leaf_text_node_;
bool is_currently_parsing8_bit_chunk_;
bool saw_error_;
bool saw_css_;
bool saw_xsl_transform_;
bool saw_first_element_;
bool is_xhtml_document_;
bool parser_paused_;
bool requesting_script_;
bool finish_called_;
XMLErrors xml_errors_;
Member<XMLParserScriptRunner> script_runner_;
TextPosition script_start_position_;
bool parsing_fragment_;
AtomicString default_namespace_uri_;
typedef HashMap<AtomicString, AtomicString> PrefixForNamespaceMap;
PrefixForNamespaceMap prefix_to_namespace_map_;
SegmentedString pending_src_;
};
xmlDocPtr XmlDocPtrForString(Document*,
const String& source,
const String& url);
HashMap<String, String> ParseAttributes(const String&, bool& attrs_ok);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_XML_PARSER_XML_DOCUMENT_PARSER_H_
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