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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
commit | 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 (patch) | |
tree | 11425ea0b299d6fb89c6d3618a22d97d5bf68d0f /WebCore/loader/TextDocument.cpp | |
parent | 648161bb0edfc3d43db63caed5cc5213bc6cb78f (diff) | |
download | external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.zip external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.gz external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'WebCore/loader/TextDocument.cpp')
-rw-r--r-- | WebCore/loader/TextDocument.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/WebCore/loader/TextDocument.cpp b/WebCore/loader/TextDocument.cpp new file mode 100644 index 0000000..6b06ede --- /dev/null +++ b/WebCore/loader/TextDocument.cpp @@ -0,0 +1,187 @@ +/* + * Copyright (C) 2006, 2007, 2008 Apple 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 "config.h" +#include "TextDocument.h" + +#include "Element.h" +#include "HTMLNames.h" +#include "HTMLViewSourceDocument.h" +#include "SegmentedString.h" +#include "Text.h" +#include "XMLTokenizer.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +class TextTokenizer : public Tokenizer { +public: + TextTokenizer(Document*); + TextTokenizer(HTMLViewSourceDocument*); + + virtual bool write(const SegmentedString&, bool appendData); + virtual void finish(); + virtual bool isWaitingForScripts() const; + + inline void checkBuffer(int len = 10) + { + if ((m_dest - m_buffer) > m_size - len) { + // Enlarge buffer + int newSize = std::max(m_size * 2, m_size + len); + int oldOffset = m_dest - m_buffer; + m_buffer = static_cast<UChar*>(fastRealloc(m_buffer, newSize * sizeof(UChar))); + m_dest = m_buffer + oldOffset; + m_size = newSize; + } + } + +private: + Document* m_doc; + Element* m_preElement; + + bool m_skipLF; + + int m_size; + UChar* m_buffer; + UChar* m_dest; +}; + +TextTokenizer::TextTokenizer(Document* doc) + : m_doc(doc) + , m_preElement(0) + , m_skipLF(false) +{ + // Allocate buffer + m_size = 254; + m_buffer = static_cast<UChar*>(fastMalloc(sizeof(UChar) * m_size)); + m_dest = m_buffer; +} + +TextTokenizer::TextTokenizer(HTMLViewSourceDocument* doc) + : Tokenizer(true) + , m_doc(doc) + , m_preElement(0) + , m_skipLF(false) +{ + // Allocate buffer + m_size = 254; + m_buffer = static_cast<UChar*>(fastMalloc(sizeof(UChar) * m_size)); + m_dest = m_buffer; +} + +bool TextTokenizer::write(const SegmentedString& s, bool appendData) +{ + ExceptionCode ec; + + m_dest = m_buffer; + + SegmentedString str = s; + while (!str.isEmpty()) { + UChar c = *str; + + if (c == '\r') { + *m_dest++ = '\n'; + + // possibly skip an LF in the case of an CRLF sequence + m_skipLF = true; + } else if (c == '\n') { + if (!m_skipLF) + *m_dest++ = c; + else + m_skipLF = false; + } else { + *m_dest++ = c; + m_skipLF = false; + } + + str.advance(); + + // Maybe enlarge the buffer + checkBuffer(); + } + + if (!m_preElement && !inViewSourceMode()) { + RefPtr<Element> rootElement = m_doc->createElementNS(xhtmlNamespaceURI, "html", ec); + m_doc->appendChild(rootElement, ec); + + RefPtr<Element> body = m_doc->createElementNS(xhtmlNamespaceURI, "body", ec); + rootElement->appendChild(body, ec); + + RefPtr<Element> preElement = m_doc->createElementNS(xhtmlNamespaceURI, "pre", ec); + preElement->setAttribute("style", "word-wrap: break-word; white-space: pre-wrap;", ec); + + body->appendChild(preElement, ec); + + m_preElement = preElement.get(); + } + + String string = String(m_buffer, m_dest - m_buffer); + if (inViewSourceMode()) { + static_cast<HTMLViewSourceDocument*>(m_doc)->addViewSourceText(string); + return false; + } + + unsigned charsLeft = string.length(); + while (charsLeft) { + // split large text to nodes of manageable size + RefPtr<Text> text = Text::createWithLengthLimit(m_doc, string, charsLeft); + m_preElement->appendChild(text, ec); + } + + return false; +} + +void TextTokenizer::finish() +{ + m_preElement = 0; + fastFree(m_buffer); + + m_doc->finishedParsing(); +} + +bool TextTokenizer::isWaitingForScripts() const +{ + // A text document is never waiting for scripts + return false; +} + +TextDocument::TextDocument(Frame* frame) + : HTMLDocument(frame) +{ +} + +Tokenizer* TextDocument::createTokenizer() +{ + return new TextTokenizer(this); +} + +Tokenizer* createTextTokenizer(HTMLViewSourceDocument* document) +{ + return new TextTokenizer(document); +} + +} |