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Encryption tool

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This commit is contained in:
Jakub Melka
2021-06-01 16:09:00 +02:00
parent 453a3a24c7
commit c22cba2f50
12 changed files with 320 additions and 13 deletions
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38
Pdf4QtLib/sources/pdfencoding.cpp
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@ -2132,7 +2132,7 @@ QString PDFEncoding::convert(const QByteArray& stream, PDFEncoding::Encoding enc
return result;
}
QByteArray PDFEncoding::convertToEncoding(const QString& string, PDFEncoding::Encoding encoding)
QByteArray PDFEncoding::convertToEncoding(const QString& string, Encoding encoding)
{
QByteArray result;
@ -2160,11 +2160,12 @@ QByteArray PDFEncoding::convertToEncoding(const QString& string, PDFEncoding::En
return result;
}
bool PDFEncoding::canConvertToEncoding(const QString& string, PDFEncoding::Encoding encoding)
bool PDFEncoding::canConvertToEncoding(const QString& string, Encoding encoding, QString* invalidCharacters)
{
const encoding::EncodingTable* table = getTableForEncoding(encoding);
Q_ASSERT(table);
bool isConvertible = true;
for (QChar character : string)
{
ushort unicode = character.unicode();
@ -2181,14 +2182,23 @@ bool PDFEncoding::canConvertToEncoding(const QString& string, PDFEncoding::Encod
if (!converted)
{
return false;
isConvertible = false;
if (!invalidCharacters)
{
// We are not storing invalid characters - we can break on first not convertible
// character.
break;
}
*invalidCharacters += character;
}
}
return true;
return isConvertible;
}
bool PDFEncoding::canConvertFromEncoding(const QByteArray& stream, PDFEncoding::Encoding encoding)
bool PDFEncoding::canConvertFromEncoding(const QByteArray& stream, Encoding encoding)
{
const encoding::EncodingTable* table = getTableForEncoding(encoding);
for (const unsigned char index : stream)
@ -2403,6 +2413,24 @@ QString PDFEncoding::convertSmartFromByteStringToUnicode(const QByteArray& strea
return QString::fromLatin1(stream.toHex()).toUpper();
}
QString PDFEncoding::getEncodingCharacters(Encoding encoding)
{
QString string;
if (const encoding::EncodingTable* table = getTableForEncoding(encoding))
{
for (const QChar& character : *table)
{
if (character != QChar(0xFFFD))
{
string += character;
}
}
}
return string;
}
bool PDFEncoding::hasUnicodeLeadMarkings(const QByteArray& stream)
{
if (stream.size() >= 2)