private static IEnumerable<BaseOperator> ParsePatternWorker(string patternText)
{
var pattern = new PatternWrapper(patternText);
if (pattern.IsEmpty)
yield return new OpNoMatch();
// Check for "/" suffix
if (IsPathSeparator(pattern.Last)) {
yield return new OpDirectoryOnly();
pattern.RemoveLast();
}
if (pattern.IsEmpty)
yield return new OpNoMatch();
// Check for "/" prefix
if (IsPathSeparator(pattern.First))
pattern.Skip(1);
else
yield return new OpRelativeDirectory();
// Check for "**/" prefix
if (pattern.StartsWith("**\\"))
pattern.Skip(3);
if (pattern.IsEmpty)
yield return new OpNoMatch();
while (!pattern.IsEmpty) {
var anyDirIndex = pattern.IndexOf("\\**\\");
if (anyDirIndex >= 0) {
if (anyDirIndex >= pattern.Index)
yield return new OpText(pattern.Take(anyDirIndex - pattern.Index));
yield return new OpRecursiveDir();
pattern.Skip(4);
continue;
}
var asteriskIndex = pattern.IndexOf("*");
if (asteriskIndex >= 0) {
if (asteriskIndex > pattern.Index)
yield return new OpText(pattern.Take(asteriskIndex - pattern.Index));
yield return new OpAsterisk();
pattern.Skip(1);
} else {
yield return new OpText(pattern.Take(pattern.Remaining));
}
}
}
private static IEnumerable <BaseOperator> ParsePatternWorker(string patternText)
{
var pattern = new PatternWrapper(patternText);
if (pattern.IsEmpty)
{
yield return(new OpNoMatch());
}
// Check for "/" suffix
if (IsPathSeparator(pattern.Last))
{
yield return(new OpDirectoryOnly());
pattern.RemoveLast();
}
if (pattern.IsEmpty)
{
yield return(new OpNoMatch());
}
// Check for "/" prefix
if (IsPathSeparator(pattern.First))
{
pattern.Skip(1);
}
else
{
yield return(new OpRelativeDirectory());
}
// Check for "**/" prefix
if (pattern.StartsWith("**\\"))
{
pattern.Skip(3);
}
if (pattern.IsEmpty)
{
yield return(new OpNoMatch());
}
while (!pattern.IsEmpty)
{
var anyDirIndex = pattern.IndexOf("\\**\\");
if (anyDirIndex >= 0)
{
if (anyDirIndex >= pattern.Index)
{
yield return(new OpText(pattern.Take(anyDirIndex - pattern.Index)));
}
yield return(new OpRecursiveDir());
pattern.Skip(4);
continue;
}
var asteriskIndex = pattern.IndexOf("*");
if (asteriskIndex >= 0)
{
if (asteriskIndex > pattern.Index)
{
yield return(new OpText(pattern.Take(asteriskIndex - pattern.Index)));
}
yield return(new OpAsterisk());
pattern.Skip(1);
}
else
{
yield return(new OpText(pattern.Take(pattern.Remaining)));
}
}
}