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