DeprecatedCString DeprecatedCString::mid(unsigned index, unsigned len) const
{
unsigned size = length();
if( data() && index<size ) // return null if index out-of-range
{
// clip length
if( len > size - index )
len = size - index;
// copy and return
return DeprecatedCString( &(data()[index]), len+1); // include nul
}
// degenerate case
return DeprecatedCString();
}
// Documentation for the CF_HTML format is available at http://msdn.microsoft.com/workshop/networking/clipboard/htmlclipboard.asp
DeprecatedCString markupToCF_HTML(const String& markup, const String& srcURL)
{
if (!markup.length())
return DeprecatedCString();
DeprecatedCString cf_html ("Version:0.9");
DeprecatedCString startHTML ("\nStartHTML:");
DeprecatedCString endHTML ("\nEndHTML:");
DeprecatedCString startFragment ("\nStartFragment:");
DeprecatedCString endFragment ("\nEndFragment:");
DeprecatedCString sourceURL ("\nSourceURL:");
bool shouldFillSourceURL = !srcURL.isEmpty() && (srcURL != "about:blank");
if (shouldFillSourceURL)
sourceURL.append(srcURL.utf8().data());
DeprecatedCString startMarkup ("\n<HTML>\n<BODY>\n<!--StartFragment-->\n");
DeprecatedCString endMarkup ("\n<!--EndFragment-->\n</BODY>\n</HTML>");
// calculate offsets
const unsigned UINT_MAXdigits = 10; // number of digits in UINT_MAX in base 10
unsigned startHTMLOffset = cf_html.length() + startHTML.length() + endHTML.length() + startFragment.length() + endFragment.length() + (shouldFillSourceURL ? sourceURL.length() : 0) + (4*UINT_MAXdigits);
unsigned startFragmentOffset = startHTMLOffset + startMarkup.length();
CString markupUTF8 = markup.utf8();
unsigned endFragmentOffset = startFragmentOffset + markupUTF8.length();
unsigned endHTMLOffset = endFragmentOffset + endMarkup.length();
// fill in needed data
startHTML.append(String::format("%010u", startHTMLOffset).deprecatedString().utf8());
endHTML.append(String::format("%010u", endHTMLOffset).deprecatedString().utf8());
startFragment.append(String::format("%010u", startFragmentOffset).deprecatedString().utf8());
endFragment.append(String::format("%010u", endFragmentOffset).deprecatedString().utf8());
startMarkup.append(markupUTF8.data());
// create full cf_html string from the fragments
cf_html.append(startHTML);
cf_html.append(endHTML);
cf_html.append(startFragment);
cf_html.append(endFragment);
if (shouldFillSourceURL)
cf_html.append(sourceURL);
cf_html.append(startMarkup);
cf_html.append(endMarkup);
return cf_html;
}
DeprecatedCString StreamingTextDecoderICU::fromUnicode(const DeprecatedString &qcs, bool allowEntities)
{
TextEncodingID encoding = m_encoding.effectiveEncoding().encodingID();
if (encoding == WinLatin1Encoding && qcs.isAllLatin1())
return qcs.latin1();
if ((encoding == WinLatin1Encoding || encoding == UTF8Encoding || encoding == ASCIIEncoding)
&& qcs.isAllASCII())
return qcs.ascii();
// FIXME: We should see if there is "force ASCII range" mode in ICU;
// until then, we change the backslash into a yen sign.
// Encoding will change the yen sign back into a backslash.
DeprecatedString copy = qcs;
copy.replace('\\', m_encoding.backslashAsCurrencySymbol());
if (!m_converterICU)
createICUConverter();
if (!m_converterICU)
return DeprecatedCString();
// FIXME: when DeprecatedString buffer is latin1, it would be nice to
// convert from that w/o having to allocate a unicode buffer
char buffer[ConversionBufferSize];
const UChar* source = reinterpret_cast<const UChar*>(copy.unicode());
const UChar* sourceLimit = source + copy.length();
UErrorCode err = U_ZERO_ERROR;
DeprecatedString normalizedString;
if (UNORM_YES != unorm_quickCheck(source, copy.length(), UNORM_NFC, &err)) {
normalizedString.truncate(copy.length()); // normalization to NFC rarely increases the length, so this first attempt will usually succeed
int32_t normalizedLength = unorm_normalize(source, copy.length(), UNORM_NFC, 0, reinterpret_cast<UChar*>(const_cast<DeprecatedChar*>(normalizedString.unicode())), copy.length(), &err);
if (err == U_BUFFER_OVERFLOW_ERROR) {
err = U_ZERO_ERROR;
normalizedString.truncate(normalizedLength);
normalizedLength = unorm_normalize(source, copy.length(), UNORM_NFC, 0, reinterpret_cast<UChar*>(const_cast<DeprecatedChar*>(normalizedString.unicode())), normalizedLength, &err);
}
source = reinterpret_cast<const UChar*>(normalizedString.unicode());
sourceLimit = source + normalizedLength;
}
DeprecatedCString result(1); // for trailing zero
if (allowEntities)
ucnv_setFromUCallBack(m_converterICU, UCNV_FROM_U_CALLBACK_ESCAPE, UCNV_ESCAPE_XML_DEC, 0, 0, &err);
else {
ucnv_setSubstChars(m_converterICU, "?", 1, &err);
ucnv_setFromUCallBack(m_converterICU, UCNV_FROM_U_CALLBACK_SUBSTITUTE, 0, 0, 0, &err);
}
ASSERT(U_SUCCESS(err));
if (U_FAILURE(err))
return DeprecatedCString();
do {
char* target = buffer;
char* targetLimit = target + ConversionBufferSize;
err = U_ZERO_ERROR;
ucnv_fromUnicode(m_converterICU, &target, targetLimit, &source, sourceLimit, 0, true, &err);
int count = target - buffer;
buffer[count] = 0;
result.append(buffer);
} while (err == U_BUFFER_OVERFLOW_ERROR);
return result;
}
