public IEnumerable <string> Split(string subject, PcreSplitOptions options, int count, int startIndex)
{
if (subject == null)
{
throw new ArgumentNullException(nameof(subject));
}
if (startIndex < 0 || startIndex > subject.Length)
{
throw new ArgumentOutOfRangeException(nameof(startIndex));
}
return(SplitIterator(subject, options, count, startIndex));
}
private IEnumerable <string> SplitIterator(string subject, PcreSplitOptions options, int count, int startIndex)
{
if (count == 0)
{
yield return(subject);
yield break;
}
var index = 0;
var captureCount = CaptureCount;
var includeGroupValues = (options & PcreSplitOptions.IncludeGroupValues) != 0;
foreach (var match in Matches(subject, startIndex))
{
yield return(subject.Substring(index, match.Index - index));
index = match.GetStartOfNextMatchIndex();
if (includeGroupValues)
{
for (var groupIdx = 1; groupIdx <= captureCount; ++groupIdx)
{
var group = match[groupIdx];
if (group.Success)
{
yield return(group.Value);
}
}
}
if (--count == 0)
{
break;
}
}
yield return(subject.Substring(index));
}
public static IEnumerable <string> Split(string subject, string pattern, PcreOptions options, PcreSplitOptions splitOptions) => Split(subject, pattern, options, splitOptions, -1, 0);
public IEnumerable <string> Split(string subject, PcreSplitOptions options) => Split(subject, options, -1, 0);
public static IEnumerable <string> Split(string subject, string pattern, PcreOptions options, PcreSplitOptions splitOptions, int count, int startIndex) => new PcreRegex(pattern, options).Split(subject, splitOptions, count, startIndex);
public IEnumerable <string> Split(string subject, PcreSplitOptions options)
{
return(Split(subject, options, -1, 0));
}
public static IEnumerable <string> Split(string subject, string pattern, PcreOptions options, PcreSplitOptions splitOptions, int count)
{
return(Split(subject, pattern, options, splitOptions, count, 0));
}
