Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

2 files changed, 173 insertions, 0 deletions

diff --git a/Source/WebCore/platform/text/transcoder/FontTranscoder.cpp b/Source/WebCore/platform/text/transcoder/FontTranscoder.cpp
new file mode 100644
index 0000000..68601f9
--- /dev/null
+++ b/Source/WebCore/platform/text/transcoder/FontTranscoder.cpp
@@ -0,0 +1,106 @@
+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 "FontTranscoder.h"
+
+#include "CharacterNames.h"
+#include "FontDescription.h"
+#include "TextEncoding.h"
+
+namespace WebCore {
+
+FontTranscoder::FontTranscoder()
+{
+    m_converterTypes.add("MS PGothic", BackslashToYenSign);
+    UChar unicodeNameMSPGothic[] = {0xFF2D, 0xFF33, 0x0020, 0xFF30, 0x30B4, 0x30B7, 0x30C3, 0x30AF};
+    m_converterTypes.add(AtomicString(unicodeNameMSPGothic, WTF_ARRAY_LENGTH(unicodeNameMSPGothic)), BackslashToYenSign);
+
+    m_converterTypes.add("MS PMincho", BackslashToYenSign);
+    UChar unicodeNameMSPMincho[] = {0xFF2D, 0xFF33, 0x0020, 0xFF30, 0x660E, 0x671D};
+    m_converterTypes.add(AtomicString(unicodeNameMSPMincho, WTF_ARRAY_LENGTH(unicodeNameMSPMincho)), BackslashToYenSign);
+
+    m_converterTypes.add("MS Gothic", BackslashToYenSign);
+    UChar unicodeNameMSGothic[] = {0xFF2D, 0xFF33, 0x0020, 0x30B4, 0x30B7, 0x30C3, 0x30AF};
+    m_converterTypes.add(AtomicString(unicodeNameMSGothic, WTF_ARRAY_LENGTH(unicodeNameMSGothic)), BackslashToYenSign);
+
+    m_converterTypes.add("MS Mincho", BackslashToYenSign);
+    UChar unicodeNameMSMincho[] = {0xFF2D, 0xFF33, 0x0020, 0x660E, 0x671D};
+    m_converterTypes.add(AtomicString(unicodeNameMSMincho, WTF_ARRAY_LENGTH(unicodeNameMSMincho)), BackslashToYenSign);
+
+    m_converterTypes.add("Meiryo", BackslashToYenSign);
+    UChar unicodeNameMeiryo[] = {0x30E1, 0x30A4, 0x30EA, 0x30AA};
+    m_converterTypes.add(AtomicString(unicodeNameMeiryo, WTF_ARRAY_LENGTH(unicodeNameMeiryo)), BackslashToYenSign);
+}
+
+FontTranscoder::ConverterType FontTranscoder::converterType(const FontDescription& fontDescription, const TextEncoding* encoding) const
+{
+    const AtomicString& fontFamily = fontDescription.family().family().string();
+    if (!fontFamily.isNull()) {
+        HashMap<AtomicString, ConverterType>::const_iterator found = m_converterTypes.find(fontFamily);
+        if (found != m_converterTypes.end())
+            return found->second;
+    }
+
+    // IE's default fonts for Japanese encodings change backslashes into yen signs.
+    // We emulate this behavior only when no font is explicitly specified.
+    if (encoding && encoding->backslashAsCurrencySymbol() != '\\' && !fontDescription.isSpecifiedFont())
+        return BackslashToYenSign;
+
+    return NoConversion;
+}
+
+void FontTranscoder::convert(String& text, const FontDescription& fontDescription, const TextEncoding* encoding) const
+{
+    switch (converterType(fontDescription, encoding)) {
+    case BackslashToYenSign: {
+        // FIXME: TextEncoding.h has similar code. We need to factor them out.
+        text.replace('\\', yenSign);
+        break;
+    }
+    case NoConversion:
+    default:
+        ASSERT_NOT_REACHED();
+    }
+}
+
+bool FontTranscoder::needsTranscoding(const FontDescription& fontDescription, const TextEncoding* encoding) const
+{
+    ConverterType type = converterType(fontDescription, encoding);
+    return type != NoConversion;
+}
+
+FontTranscoder& fontTranscoder()
+{
+    static FontTranscoder* transcoder = new FontTranscoder;
+    return *transcoder;
+}
+
+} // namespace WebCore
diff --git a/Source/WebCore/platform/text/transcoder/FontTranscoder.h b/Source/WebCore/platform/text/transcoder/FontTranscoder.h
new file mode 100644
index 0000000..67db977
--- /dev/null
+++ b/Source/WebCore/platform/text/transcoder/FontTranscoder.h
@@ -0,0 +1,67 @@
+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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.
+ */
+
+#ifndef FontTranscoder_h
+#define FontTranscoder_h
+
+#include <wtf/HashMap.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/text/AtomicStringHash.h>
+
+namespace WebCore {
+
+class FontDescription;
+class TextEncoding;
+
+class FontTranscoder : public Noncopyable {
+public:
+    void convert(String& text, const FontDescription&, const TextEncoding* = 0) const;
+    bool needsTranscoding(const FontDescription&, const TextEncoding* = 0) const;
+
+private:
+    FontTranscoder();
+    ~FontTranscoder(); // Not implemented to make sure nobody accidentally calls delete -- WebCore does not delete singletons.
+
+    enum ConverterType {
+        NoConversion, BackslashToYenSign,
+    };
+
+    ConverterType converterType(const FontDescription&, const TextEncoding*) const;
+
+    HashMap<AtomicString, ConverterType> m_converterTypes;
+
+    friend FontTranscoder& fontTranscoder();
+};
+
+FontTranscoder& fontTranscoder();
+
+} // namespace WebCore
+
+#endif // FontTranscoder_h