1 files changed, 69 insertions, 0 deletions
diff --git a/Source/WebCore/html/parser/HTMLSourceTracker.cpp b/Source/WebCore/html/parser/HTMLSourceTracker.cpp
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+++ b/Source/WebCore/html/parser/HTMLSourceTracker.cpp
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+/*
+ * Copyright (C) 2010 Adam Barth. 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 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 INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * 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 "HTMLSourceTracker.h"
+
+namespace WebCore {
+
+HTMLSourceTracker::HTMLSourceTracker()
+{
+}
+
+void HTMLSourceTracker::start(const HTMLInputStream& input, HTMLToken& token)
+{
+    m_sourceFromPreviousSegments = token.type() == HTMLToken::Uninitialized ? String() : m_sourceFromPreviousSegments + m_source.toString();
+    m_source = input.current();
+    token.setBaseOffset(input.current().numberOfCharactersConsumed() - m_sourceFromPreviousSegments.length());
+}
+
+void HTMLSourceTracker::end(const HTMLInputStream& input, HTMLToken& token)
+{
+    m_cachedSourceForToken = String();
+    // FIXME: This work should really be done by the HTMLTokenizer.
+    token.end(input.current().numberOfCharactersConsumed());
+}
+
+String HTMLSourceTracker::sourceForToken(const HTMLToken& token)
+{
+    if (token.type() == HTMLToken::EndOfFile)
+        return String(); // Hides the null character we use to mark the end of file.
+
+    if (!m_cachedSourceForToken.isEmpty())
+        return m_cachedSourceForToken;
+
+    ASSERT(!token.startIndex());
+    UChar* data = 0;
+    int length = token.endIndex() - token.startIndex() - m_sourceFromPreviousSegments.length();
+    String source = String::createUninitialized(length, data);
+    for (int i = 0; i < length; ++i) {
+        data[i] = *m_source;
+        m_source.advance();
+    }
+    m_cachedSourceForToken = m_sourceFromPreviousSegments + source;
+    return m_cachedSourceForToken;
+}
+
+}