public static PatternEnumerator Create(string [] patternParts)
{
if (patternParts == null)
{
return(new TerminalEnumerator());
}
if (patternParts.Length == 0)
{
throw new ArgumentException("must have at least one element", nameof(patternParts));
}
if (patternParts [0] == null)
{
throw new ArgumentException("must not have null elements", nameof(patternParts));
}
var root = patternParts [0];
string [] childParts = null;
if (patternParts.Length > 1)
{
childParts = new string [patternParts.Length - 1];
Array.Copy(patternParts, 1, childParts, 0, childParts.Length);
}
if (root == "**")
{
return(new RecursiveDirectoryEnumerator(childParts));
}
else if (root.Contains("**"))
{
throw new ArgumentException("invalid pattern: '**' can only be an " +
$"entire path component ({root}", nameof(patternParts));
}
else if (GlobEnumerator.CanHandleWildcards(root))
{
return(new GlobEnumerator(root, childParts));
}
else
{
return(new VerbatimEnumerator(root, childParts));
}
}
internal static Regex GetRegex(string pattern) => GlobEnumerator.GetRegex(pattern);
public static Regex GetRegex(string pattern)
{
return(GlobEnumerator.GetRegex(pattern));
}
