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/*
* Copyright (C) 2009, 2010, 2011 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "WebKitTextCodec.h"
#include "Base64.h"
#include "KURL.h"
#include "TextCodecICU.h"
#include <wtf/Vector.h>
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
using WebCore::TextEncoding;
using WebCore::TextCodecICU;
namespace BlackBerry {
namespace WebKit {
bool isSameEncoding(const char* encoding1, const char* encoding2)
{
return TextEncoding(encoding1) == TextEncoding(encoding2);
}
bool isASCIICompatibleEncoding(const char* encoding)
{
TextEncoding textEncoding(encoding);
if (!textEncoding.isValid())
return false;
// Check the most common encodings first
if (textEncoding == WebCore::UTF8Encoding() || textEncoding == WebCore::Latin1Encoding() || textEncoding == WebCore::ASCIIEncoding())
return true;
String lowercasedEncoding = String(encoding).lower();
// This is slow and could easily be optimized by directly inspecting encoding[i].
if (lowercasedEncoding.startsWith("iso-8859")
|| lowercasedEncoding.startsWith("windows")
|| lowercasedEncoding.startsWith("euc-jp")
|| lowercasedEncoding.startsWith("euc-kr"))
return true;
return false;
}
TranscodeResult transcode(const char* sourceEncoding, const char* targetEncoding, const char*& sourceStart, int sourceLength, char*& targetStart, unsigned int targetLength)
{
TextEncoding textEncodingSource(sourceEncoding);
if (!textEncodingSource.isValid())
return SourceEncodingUnsupported;
TextEncoding textEncodingTarget(targetEncoding);
if (!textEncodingTarget.isValid())
return TargetEncodingUnsupported;
bool sawError = false;
String ucs2 = TextCodecICU(textEncodingSource).decode(sourceStart, sourceLength, true, true, sawError);
if (sawError)
return SourceBroken;
CString encoded = TextCodecICU(textEncodingTarget).encode(ucs2.characters(), ucs2.length(), WebCore::EntitiesForUnencodables);
if (encoded.length() > targetLength)
return TargetBufferInsufficient;
strncpy(targetStart, encoded.data(), encoded.length());
targetStart += encoded.length();
return Success;
}
WebCore::Base64DecodePolicy base64DecodePolicyForWebCore(Base64DecodePolicy policy)
{
// Must make sure Base64DecodePolicy is the same in WebKit and WebCore!
return static_cast<WebCore::Base64DecodePolicy>(policy);
}
bool base64Decode(const std::string& base64, std::vector<char>& binary, Base64DecodePolicy policy)
{
Vector<char> result;
if (!WebCore::base64Decode(base64.c_str(), base64.length(), result, base64DecodePolicyForWebCore(policy)))
return false;
binary.insert(binary.begin(), result.begin(), result.end());
return true;
}
bool base64Encode(const std::vector<char>& binary, std::string& base64, Base64EncodePolicy policy)
{
Vector<char> result;
result.append(&binary[0], binary.size());
WebCore::base64Encode(&binary[0], binary.size(), result, Base64InsertCRLF == policy ? true : false);
base64.clear();
base64.append(&result[0], result.size());
return true;
}
void unescapeURL(const std::string& escaped, std::string& url)
{
String escapedString(escaped.data(), escaped.length());
String urlString = WebCore::decodeURLEscapeSequences(escapedString);
CString utf8 = urlString.utf8();
url.clear();
url.append(utf8.data(), utf8.length());
}
void escapeURL(const std::string& url, std::string& escaped)
{
String urlString(url.data(), url.length());
String escapedString = WebCore::encodeWithURLEscapeSequences(urlString);
CString utf8 = escapedString.utf8();
escaped.clear();
escaped.append(utf8.data(), utf8.length());
}
} // namespace WebKit
} // namespace BlackBerry
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