113 lines
2.9 KiB
C#
Executable File
113 lines
2.9 KiB
C#
Executable File
/* LineParser.cs
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* part of zaaReloaded2
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*
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* Copyright 2015-2017 Daniel Kraus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Linq;
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using System.Text.RegularExpressions;
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namespace zaaReloaded2.Thesaurus
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{
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/// <summary>
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/// Simple parser that separates a line from a text file into
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/// space-separated fields; field values that contain spaces must
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/// be enclosed by double quotation marks.
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/// </summary>
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/// <remarks>
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/// Everything after a hash (#) will be ignored.
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/// </remarks>
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public class LineParser
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{
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#region Public properties
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/// <summary>
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/// Gets or sets the line being parsed.
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/// </summary>
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public string Line
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{
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get
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{
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return _line;
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}
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set
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{
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_line = value;
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ParseLine();
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}
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}
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/// <summary>
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/// Gets an array of fields in the line.
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/// </summary>
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public string[] Fields { get; private set; }
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/// <summary>
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/// Indicates whether the parsed <see cref="Line"/>
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/// contains fields.
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/// </summary>
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public bool HasFields
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{
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get
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{
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return Fields.Length > 0;
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}
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}
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#endregion
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#region Constructors
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/// <summary>
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/// Constructs a LineParser object without a line.
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/// </summary>
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public LineParser() { }
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/// <summary>
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/// Constructs a LineParser object with an initial <paramref name="line"/>.
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/// </summary>
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/// <param name="line">Initial line to parse.</param>
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public LineParser(string line)
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: this()
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{
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Line = line;
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}
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#endregion
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#region Private methods
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void ParseLine()
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{
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string s = Line.Split('#')[0];
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Fields = _parser
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.Matches(s)
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.Cast<Match>()
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.Select(m => m.Groups["match"].Value)
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.ToArray<string>();
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}
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#endregion
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#region Fields
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// Regex modified after http://stackoverflow.com/a/554068/270712
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static readonly Regex _parser = new Regex(@"(?<match>[^\s""]+)|\""(?<match>[^""]*)""");
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string _line;
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#endregion
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}
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}
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