#include "config.h"
#include "TextEncoding.h"
#include "PlatformString.h"
#include "TextCodec.h"
#include "TextEncodingRegistry.h"
#if USE(ICU_UNICODE)
#include <unicode/unorm.h>
#elif USE(QT4_UNICODE)
#include <QString>
#elif USE(GLIB_UNICODE)
#include <glib.h>
#include <wtf/gobject/GOwnPtr.h>
#endif
#include <wtf/text/CString.h>
#include <wtf/OwnPtr.h>
#include <wtf/StdLibExtras.h>
namespace WebCore {
static const TextEncoding& UTF7Encoding()
{
static TextEncoding globalUTF7Encoding("UTF-7");
return globalUTF7Encoding;
}
TextEncoding::TextEncoding(const char* name)
: m_name(atomicCanonicalTextEncodingName(name))
, m_backslashAsCurrencySymbol(backslashAsCurrencySymbol())
{
}
TextEncoding::TextEncoding(const String& name)
: m_name(atomicCanonicalTextEncodingName(name.characters(), name.length()))
, m_backslashAsCurrencySymbol(backslashAsCurrencySymbol())
{
}
String TextEncoding::decode(const char* data, size_t length, bool stopOnError, bool& sawError) const
{
if (!m_name)
return String();
return newTextCodec(*this)->decode(data, length, true, stopOnError, sawError);
}
CString TextEncoding::encode(const UChar* characters, size_t length, UnencodableHandling handling) const
{
if (!m_name)
return CString();
if (!length)
return "";
#if USE(ICU_UNICODE)
const UChar* source = characters;
size_t sourceLength = length;
Vector<UChar> normalizedCharacters;
UErrorCode err = U_ZERO_ERROR;
if (unorm_quickCheck(source, sourceLength, UNORM_NFC, &err) != UNORM_YES) {
normalizedCharacters.grow(sourceLength);
int32_t normalizedLength = unorm_normalize(source, length, UNORM_NFC, 0, normalizedCharacters.data(), length, &err);
if (err == U_BUFFER_OVERFLOW_ERROR) {
err = U_ZERO_ERROR;
normalizedCharacters.resize(normalizedLength);
normalizedLength = unorm_normalize(source, length, UNORM_NFC, 0, normalizedCharacters.data(), normalizedLength, &err);
}
ASSERT(U_SUCCESS(err));
source = normalizedCharacters.data();
sourceLength = normalizedLength;
}
return newTextCodec(*this)->encode(source, sourceLength, handling);
#elif USE(QT4_UNICODE)
QString str(reinterpret_cast<const QChar*>(characters), length);
str = str.normalized(QString::NormalizationForm_C);
return newTextCodec(*this)->encode(reinterpret_cast<const UChar *>(str.utf16()), str.length(), handling);
#elif USE(GLIB_UNICODE)
GOwnPtr<char> UTF8Source;
UTF8Source.set(g_utf16_to_utf8(characters, length, 0, 0, 0));
if (!UTF8Source) {
return newTextCodec(*this)->encode(characters, length, handling);
}
GOwnPtr<char> UTF8Normalized;
UTF8Normalized.set(g_utf8_normalize(UTF8Source.get(), -1, G_NORMALIZE_NFC));
long UTF16Length;
GOwnPtr<UChar> UTF16Normalized;
UTF16Normalized.set(g_utf8_to_utf16(UTF8Normalized.get(), -1, 0, &UTF16Length, 0));
return newTextCodec(*this)->encode(UTF16Normalized.get(), UTF16Length, handling);
#elif OS(WINCE)
OwnPtr<TextCodec> textCodec = newTextCodec(*this);
return textCodec.get() ? textCodec->encode(characters, length, handling) : CString();
#endif
}
const char* TextEncoding::domName() const
{
if (noExtendedTextEncodingNameUsed())
return m_name;
static const char* const a = atomicCanonicalTextEncodingName("windows-949");
if (m_name == a)
return "EUC-KR";
return m_name;
}
bool TextEncoding::usesVisualOrdering() const
{
if (noExtendedTextEncodingNameUsed())
return false;
static const char* const a = atomicCanonicalTextEncodingName("ISO-8859-8");
return m_name == a;
}
bool TextEncoding::isJapanese() const
{
return isJapaneseEncoding(m_name);
}
UChar TextEncoding::backslashAsCurrencySymbol() const
{
return shouldShowBackslashAsCurrencySymbolIn(m_name) ? 0x00A5 : '\\';
}
bool TextEncoding::isNonByteBasedEncoding() const
{
if (noExtendedTextEncodingNameUsed()) {
return *this == UTF16LittleEndianEncoding()
|| *this == UTF16BigEndianEncoding();
}
return *this == UTF16LittleEndianEncoding()
|| *this == UTF16BigEndianEncoding()
|| *this == UTF32BigEndianEncoding()
|| *this == UTF32LittleEndianEncoding();
}
bool TextEncoding::isUTF7Encoding() const
{
if (noExtendedTextEncodingNameUsed())
return false;
return *this == UTF7Encoding();
}
const TextEncoding& TextEncoding::closestByteBasedEquivalent() const
{
if (isNonByteBasedEncoding())
return UTF8Encoding();
return *this;
}
const TextEncoding& TextEncoding::encodingForFormSubmission() const
{
if (isNonByteBasedEncoding() || isUTF7Encoding())
return UTF8Encoding();
return *this;
}
const TextEncoding& ASCIIEncoding()
{
static TextEncoding globalASCIIEncoding("ASCII");
return globalASCIIEncoding;
}
const TextEncoding& Latin1Encoding()
{
static TextEncoding globalLatin1Encoding("latin1");
return globalLatin1Encoding;
}
const TextEncoding& UTF16BigEndianEncoding()
{
static TextEncoding globalUTF16BigEndianEncoding("UTF-16BE");
return globalUTF16BigEndianEncoding;
}
const TextEncoding& UTF16LittleEndianEncoding()
{
static TextEncoding globalUTF16LittleEndianEncoding("UTF-16LE");
return globalUTF16LittleEndianEncoding;
}
const TextEncoding& UTF32BigEndianEncoding()
{
static TextEncoding globalUTF32BigEndianEncoding("UTF-32BE");
return globalUTF32BigEndianEncoding;
}
const TextEncoding& UTF32LittleEndianEncoding()
{
static TextEncoding globalUTF32LittleEndianEncoding("UTF-32LE");
return globalUTF32LittleEndianEncoding;
}
const TextEncoding& UTF8Encoding()
{
static TextEncoding globalUTF8Encoding("UTF-8");
ASSERT(globalUTF8Encoding.isValid());
return globalUTF8Encoding;
}
const TextEncoding& WindowsLatin1Encoding()
{
static TextEncoding globalWindowsLatin1Encoding("WinLatin-1");
return globalWindowsLatin1Encoding;
}
}