public static ICollection <string> Expand(string start, string end, bool requireSameLength, ICollection <string> output)
{
if (start == null || end == null)
{
throw new ICUException("Range must have 2 valid strings");
}
#pragma warning disable 612, 618
int[] startCps = CharSequences.CodePoints(start);
int[] endCps = CharSequences.CodePoints(end);
#pragma warning restore 612, 618
int startOffset = startCps.Length - endCps.Length;
if (requireSameLength && startOffset != 0)
{
throw new ICUException("Range must have equal-length strings");
}
else if (startOffset < 0)
{
throw new ICUException("Range must have start-length ≥ end-length");
}
else if (endCps.Length == 0)
{
throw new ICUException("Range must have end-length > 0");
}
StringBuilder builder = new StringBuilder();
for (int i = 0; i < startOffset; ++i)
{
builder.AppendCodePoint(startCps[i]);
}
Add(0, startOffset, startCps, endCps, builder, output);
return(output);
}
public Ranges(string s)
{
int[] array = CharSequences.CodePoints(s);
ranges = new Range[array.Length];
for (int i = 0; i < array.Length; ++i)
{
ranges[i] = new Range(array[i], array[i]);
}
}
public Ranges(string s)
{
#pragma warning disable 612, 618
int[] array = CharSequences.CodePoints(s);
#pragma warning restore 612, 618
ranges = new Range[array.Length];
for (int i = 0; i < array.Length; ++i)
{
ranges[i] = new Range(array[i], array[i]);
}
}
public SourceTargetUtility(ITransform <string, string> transform, Normalizer2 normalizer)
{
this.transform = transform;
if (normalizer != null)
{
// synchronized (SourceTargetUtility.class) {
// if (NFC == null) {
// NFC = Normalizer2.getInstance(null, "nfc", Mode.COMPOSE);
// for (int i = 0; i <= 0x10FFFF; ++i) {
// String d = NFC.getDecomposition(i);
// if (d == null) {
// continue;
// }
// String s = NFC.normalize(d);
// if (!CharSequences.equals(i, s)) {
// continue;
// }
// // composes
// boolean first = false;
// for (int trailing : CharSequences.codePoints(d)) {
// if (first) {
// first = false;
// } else {
// TRAILING_COMBINING.add(trailing);
// }
// }
// }
// }
// }
sourceCache = new UnicodeSet("[:^ccc=0:]");
}
else
{
sourceCache = new UnicodeSet();
}
sourceStrings = new HashSet <string>();
for (int i = 0; i <= 0x10FFFF; ++i)
{
string s = transform.Transform(UTF16.ValueOf(i));
bool added = false;
if (!CharSequences.Equals(i, s))
{
sourceCache.Add(i);
added = true;
}
if (normalizer == null)
{
continue;
}
string d = NFC.GetDecomposition(i);
if (d == null)
{
continue;
}
s = transform.Transform(d);
if (!d.Equals(s))
{
sourceStrings.Add(d);
}
if (added)
{
continue;
}
if (!normalizer.IsInert(i))
{
sourceCache.Add(i);
continue;
}
// see if any of the non-starters change s; if so, add i
// for (String ns : TRAILING_COMBINING) {
// String s2 = transform.transform(s + ns);
// if (!s2.startsWith(s)) {
// sourceCache.add(i);
// break;
// }
// }
// int endOfFirst = CharSequences.onCharacterBoundary(d, 1) ? 1 : 2;
// if (endOfFirst >= d.length()) {
// continue;
// }
// // now add all initial substrings
// for (int j = 1; j < d.length(); ++j) {
// if (!CharSequences.onCharacterBoundary(d, j)) {
// continue;
// }
// String dd = d.substring(0,j);
// s = transform.transform(dd);
// if (!dd.equals(s)) {
// sourceStrings.add(dd);
// }
// }
}
sourceCache.Freeze();
}
