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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/html/parser/text_document_parser.h"
#include "third_party/blink/renderer/core/html/parser/html_tree_builder.h"
#include "third_party/blink/renderer/core/html/parser/parser_synchronization_policy.h"
#include "third_party/blink/renderer/core/html_names.h"
namespace blink {
TextDocumentParser::TextDocumentParser(HTMLDocument& document,
ParserSynchronizationPolicy sync_policy)
: HTMLDocumentParser(document, sync_policy, kDisallowPrefetching),
have_inserted_fake_pre_element_(false) {}
TextDocumentParser::~TextDocumentParser() = default;
void TextDocumentParser::AppendBytes(const char* data, size_t length) {
if (!length || IsStopped())
return;
if (!have_inserted_fake_pre_element_)
InsertFakePreElement();
HTMLDocumentParser::AppendBytes(data, length);
}
void TextDocumentParser::InsertFakePreElement() {
// In principle, we should create a specialized tree builder for
// TextDocuments, but instead we re-use the existing HTMLTreeBuilder. We
// create a fake token and give it to the tree builder rather than sending
// fake bytes through the front-end of the parser to avoid distrubing the
// line/column number calculations.
Vector<Attribute> attributes;
attributes.push_back(Attribute(
html_names::kStyleAttr, "word-wrap: break-word; white-space: pre-wrap;"));
AtomicHTMLToken fake_pre(HTMLToken::kStartTag,
html_names::kPreTag.LocalName(), attributes);
TreeBuilder()->ConstructTree(&fake_pre);
// The document could have been detached by an extension while the
// tree was being constructed.
if (IsStopped())
return;
// Normally we would skip the first \n after a <pre> element, but we don't
// want to skip the first \n for text documents!
TreeBuilder()->SetShouldSkipLeadingNewline(false);
// Although Text Documents expose a "pre" element in their DOM, they
// act like a <plaintext> tag, so we have to force plaintext mode.
ForcePlaintextForTextDocument();
have_inserted_fake_pre_element_ = true;
}
} // namespace blink
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