/**
* Gets recursive decomposition of a character from the
* Unicode Character Database.
* @param canonical If true
* bit is on in this byte, then selects the recursive
* canonical decomposition, otherwise selects
* the recursive compatibility and canonical decomposition.
* @param ch the source character
* @param buffer buffer to be filled with the decomposition
*/
public void GetRecursiveDecomposition(bool canonical, int ch, StringBuffer buffer)
{
string decomp = decompose.Get(ch);
if (decomp != null && !(canonical && isCompatibility.SafeGet(ch)))
{
for (int i = 0; i < decomp.Length; i += UTF16Util.CodePointLength(ch))
{
ch = UTF16Util.NextCodePoint(decomp, i);
GetRecursiveDecomposition(canonical, ch, buffer);
}
}
else
{ // if no decomp, append
UTF16Util.AppendCodePoint(buffer, ch);
}
}
/**
* Utility: Parses a sequence of hex Unicode characters separated by spaces
*/
static public String fromHex(String source)
{
StringBuffer result = new StringBuffer();
for (int i = 0; i < source.Length; ++i)
{
char c = source[i];
switch (c)
{
case ' ': break; // ignore
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
int end = 0;
int value = 0;
try
{
//Console.Out.WriteLine(source.substring(i, i + 4) + "************" + source);
end = source.IndexOf(' ', i);
if (end < 0)
{
end = source.Length;
}
value = int.Parse(source.Substring(i, end - i), NumberStyles.HexNumber, CultureInfo.InvariantCulture); // ICU4N: Corrected 2nd substring parameter
UTF16Util.AppendCodePoint(result, value);
}
catch (Exception e)
{
Console.Out.WriteLine("i: " + i + ";end:" + end + "source:" + source);
//Console.Out.WriteLine(source.substring(i, i + 4) + "************" + source);
Environment.Exit(1);
}
//i+= 3; // skip rest of number
i = end;
break;
case '<':
int j = source.IndexOf('>', i); // skip <...>
if (j > 0)
{
i = j;
break;
} // else fall through--error
throw new ArgumentException("Bad hex value in " + source);
default:
throw new ArgumentException("Bad hex value in " + source);
}
}
return(result.ToString());
}
