/// <summary>
/// Implement UnicodeMatcher
/// </summary>
///
public virtual String ToPattern(bool escapeUnprintable)
{
StringBuilder result = new StringBuilder();
StringBuilder quoteBuf = new StringBuilder();
if (segmentNumber > 0) // i.e., if this is a segment
{
result.Append('(');
}
for (int i = 0; i < pattern.Length; ++i)
{
char keyChar = pattern[i]; // OK; see note (1) above
UnicodeMatcher m = data.LookupMatcher(keyChar);
if (m == null)
{
IBM.ICU.Impl.Utility.AppendToRule(result, keyChar, false, escapeUnprintable,
quoteBuf);
}
else
{
IBM.ICU.Impl.Utility.AppendToRule(result, m.ToPattern(escapeUnprintable),
true, escapeUnprintable, quoteBuf);
}
}
if (segmentNumber > 0) // i.e., if this is a segment
{
result.Append(')');
}
// Flush quoteBuf out to result
IBM.ICU.Impl.Utility.AppendToRule(result, -1, true, escapeUnprintable, quoteBuf);
return(result.ToString());
}
/// <summary>
/// Implement UnicodeMatcher API
/// </summary>
///
public virtual String ToPattern(bool escapeUnprintable)
{
StringBuilder result = new StringBuilder();
result.Append(matcher.ToPattern(escapeUnprintable));
if (minCount == 0)
{
if (maxCount == 1)
{
return(result.Append('?').ToString());
}
else if (maxCount == MAX)
{
return(result.Append('*').ToString());
}
// else fall through
}
else if (minCount == 1 && maxCount == MAX)
{
return(result.Append('+').ToString());
}
result.Append('{');
IBM.ICU.Impl.Utility.AppendNumber(result, minCount);
result.Append(',');
if (maxCount != MAX)
{
IBM.ICU.Impl.Utility.AppendNumber(result, maxCount);
}
result.Append('}');
return(result.ToString());
}
/// <summary>
/// Given a matcher reference, which may be null, append its pattern as a
/// literal to the given rule.
/// </summary>
///
public static void AppendToRule(StringBuilder rule, UnicodeMatcher matcher,
bool escapeUnprintable, StringBuilder quoteBuf)
{
if (matcher != null)
{
AppendToRule(rule, matcher.ToPattern(escapeUnprintable), true,
escapeUnprintable, quoteBuf);
}
}
