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jellyfin/Emby.Server.Implementations/IO/SharpCifs/Util/Sharpen/Matcher.cs

84 lines
1.6 KiB

using System;
using System.Text.RegularExpressions;
namespace SharpCifs.Util.Sharpen
{
internal class Matcher
{
private int _current;
private MatchCollection _matches;
private Regex _regex;
private string _str;
internal Matcher (Regex regex, string str)
{
this._regex = regex;
this._str = str;
}
public int End ()
{
if ((_matches == null) || (_current >= _matches.Count)) {
throw new InvalidOperationException ();
}
return (_matches[_current].Index + _matches[_current].Length);
}
public bool Find ()
{
if (_matches == null) {
_matches = _regex.Matches (_str);
_current = 0;
}
return (_current < _matches.Count);
}
public bool Find (int index)
{
_matches = _regex.Matches (_str, index);
_current = 0;
return (_matches.Count > 0);
}
public string Group (int n)
{
if ((_matches == null) || (_current >= _matches.Count)) {
throw new InvalidOperationException ();
}
Group grp = _matches[_current].Groups[n];
return grp.Success ? grp.Value : null;
}
public bool Matches ()
{
_matches = null;
return Find ();
}
public string ReplaceFirst (string txt)
{
return _regex.Replace (_str, txt, 1);
}
public Matcher Reset (CharSequence str)
{
return Reset (str.ToString ());
}
public Matcher Reset (string str)
{
_matches = null;
this._str = str;
return this;
}
public int Start ()
{
if ((_matches == null) || (_current >= _matches.Count)) {
throw new InvalidOperationException ();
}
return _matches[_current].Index;
}
}
}