public static void AnalyzeExtendedCharactersAndDigits(
IntPtr text,
uint length,
TextItemizer textItemizer,
CharAttribute[] pCharAttribute,
CultureInfo numberCulture,
IClassification classificationUtility
)
{
// Text will never be of zero length. This is enforced by Itemize().
bool isCombining;
bool needsCaretInfo;
bool isIndic;
bool isDigit;
bool isLatin;
bool isStrong;
bool isExtended;
char ch = (char)Marshal.ReadInt16(text);
classificationUtility.GetCharAttribute(
ch,
out isCombining,
out needsCaretInfo,
out isIndic,
out isDigit,
out isLatin,
out isStrong
);
isExtended = ItemizerHelper.IsExtendedCharacter(ch);
uint isDigitRangeStart = 0;
uint isDigitRangeEnd = 0;
bool previousIsDigitValue = (numberCulture == null) ? false : isDigit;
bool currentIsDigitValue;
// pCharAttribute is assumed to have the same length as text. This is enforced by Itemize().
pCharAttribute[0] = (CharAttribute)
(((isCombining) ? CharAttribute.IsCombining : CharAttribute.None)
| ((needsCaretInfo) ? CharAttribute.NeedsCaretInfo : CharAttribute.None)
| ((isLatin) ? CharAttribute.IsLatin : CharAttribute.None)
| ((isIndic) ? CharAttribute.IsIndic : CharAttribute.None)
| ((isStrong) ? CharAttribute.IsStrong : CharAttribute.None)
| ((isExtended) ? CharAttribute.IsExtended : CharAttribute.None));
uint i;
for (i = 1; i < length; ++i)
{
ch = (char)Marshal.ReadInt16(text, 2 * (int)i);
classificationUtility.GetCharAttribute(
ch,
out isCombining,
out needsCaretInfo,
out isIndic,
out isDigit,
out isLatin,
out isStrong
);
isExtended = ItemizerHelper.IsExtendedCharacter(ch);
pCharAttribute[i] = (CharAttribute)
(((isCombining) ? CharAttribute.IsCombining : CharAttribute.None)
| ((needsCaretInfo) ? CharAttribute.NeedsCaretInfo : CharAttribute.None)
| ((isLatin) ? CharAttribute.IsLatin : CharAttribute.None)
| ((isIndic) ? CharAttribute.IsIndic : CharAttribute.None)
| ((isStrong) ? CharAttribute.IsStrong : CharAttribute.None)
| ((isExtended) ? CharAttribute.IsExtended : CharAttribute.None));
currentIsDigitValue = (numberCulture == null) ? false : isDigit;
if (previousIsDigitValue != currentIsDigitValue)
{
isDigitRangeEnd = i;
textItemizer.SetIsDigit(isDigitRangeStart, isDigitRangeEnd - isDigitRangeStart, previousIsDigitValue);
isDigitRangeStart = i;
previousIsDigitValue = currentIsDigitValue;
}
}
isDigitRangeEnd = i;
textItemizer.SetIsDigit(isDigitRangeStart, isDigitRangeEnd - isDigitRangeStart, previousIsDigitValue);
}
