public InternalRegex(string pattern, PcreRegexSettings settings)
{
Pattern = pattern;
Settings = settings.AsReadOnly();
Native.compile_result result;
fixed(char *pPattern = pattern)
{
var input = new Native.compile_input
{
pattern = pPattern,
pattern_length = (uint)pattern.Length
};
Settings.FillCompileInput(ref input);
Native.compile(ref input, out result);
_code = result.code;
if (_code == IntPtr.Zero || result.error_code != 0)
{
throw new ArgumentException($"Invalid pattern '{pattern}': {Native.GetErrorMessage(result.error_code)} at offset {result.error_offset}");
}
}
CaptureCount = (int)result.capture_count;
CaptureNames = new Dictionary <string, int[]>((int)result.name_count, StringComparer.Ordinal);
var currentItem = result.name_entry_table;
for (var i = 0; i < result.name_count; ++i)
{
var groupIndex = (int)*currentItem;
var groupName = new string(currentItem + 1);
if (CaptureNames.TryGetValue(groupName, out var indexes))
{
Array.Resize(ref indexes, indexes.Length + 1);
indexes[indexes.Length - 1] = groupIndex;
}
else
{
indexes = new[] { groupIndex };
}
CaptureNames[groupName] = indexes;
currentItem += result.name_entry_size;
}
}
public RegexKey(string pattern, PcreRegexSettings settings)
{
Pattern = pattern;
Settings = settings.AsReadOnly();
}