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July 24, 2009 07:18
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| // mcs -reference:nunit.framework ReadableRegex.cs && nunit-console ReadableRegex.exe | |
| using NUnit.Framework; | |
| using System.Collections.Specialized; | |
| using System.Text.RegularExpressions; | |
| [TestFixture] | |
| public class ReadableRegex | |
| { | |
| [Test] | |
| public void NamedParameters() | |
| { | |
| const string testString = @"score 400 for 2 nights at Minas Tirith Airport"; | |
| const string pattern = @"^score\s+(?<points>\d+)\s+for\s+(?<nights>\d+)\s+nights?\s+at\s+(?<property>.*)"; | |
| Regex regex = new Regex(pattern); | |
| Match match = regex.Match(testString); | |
| Assert.AreEqual("400", match.Groups["points"].ToString()); | |
| Assert.AreEqual("2", match.Groups["nights"].ToString()); | |
| Assert.AreEqual("Minas Tirith Airport", match.Groups["property"].ToString()); | |
| } | |
| } | |
| [TestFixture] | |
| public class MoreReadableRegex | |
| { | |
| private static StringDictionary GetTypeDictionary() | |
| { | |
| StringDictionary typeMap = new StringDictionary(); | |
| typeMap.Add("number", @"\d+"); | |
| typeMap.Add("everything", @".*"); | |
| return typeMap; | |
| } | |
| private static string FixSimpleTypes(Match match) | |
| { | |
| return "(?<" + match.Groups["name"].ToString() + ">" + GetTypeDictionary()[match.Groups["type"].ToString()] + ")"; | |
| } | |
| public static string SimplePatternToFullRegex(string readableString) | |
| { | |
| // Runs of spaces are \s+ | |
| readableString = Regex.Replace(readableString, @"\s+", @"\s+"); | |
| // Fix the patterns in the string | |
| readableString = Regex.Replace(readableString, @"{\s*(?<name>\D[^,]*)\s*,(?<type>[^}]+)\s*}", FixSimpleTypes); | |
| // Leading "^" matches beginning of line | |
| return "^" + readableString; | |
| } | |
| [Test] | |
| public void PassThroughCounts() | |
| { | |
| Assert.AreEqual(@"^.{10,15}", SimplePatternToFullRegex(".{10,15}")); | |
| } | |
| [Test] | |
| public void EverythingExpansion() | |
| { | |
| Assert.AreEqual(@"^(?<a>.*)", SimplePatternToFullRegex("{a,everything}")); | |
| Assert.AreEqual(@"^b\s+(?<a>.*)", SimplePatternToFullRegex("b {a,everything}")); | |
| } | |
| [Test] | |
| public void NumberExpansion() | |
| { | |
| Assert.AreEqual(@"^(?<a>\d+)", SimplePatternToFullRegex("{a,number}")); | |
| Assert.AreEqual(@"^(?<a>\d+)\s+b\s+(?<c>\d+)", SimplePatternToFullRegex("{a,number} b {c,number}")); | |
| } | |
| [Test] | |
| public void SpaceExpansion() | |
| { | |
| Assert.AreEqual(@"^a", SimplePatternToFullRegex("a")); | |
| Assert.AreEqual(@"^a\s+b", SimplePatternToFullRegex("a b")); | |
| Assert.AreEqual(@"^a\s+b", SimplePatternToFullRegex("a b")); | |
| Assert.AreEqual(@"^\s+a\s+", SimplePatternToFullRegex(" a ")); | |
| } | |
| [Test] | |
| public void SimplePattern() | |
| { | |
| const string testString = @"score 400 for 2 nights at Minas Tirith Airport"; | |
| const string pattern = @"score {points,number} for {nights,number} nights? at {property,everything}"; | |
| Regex regex = new Regex(SimplePatternToFullRegex(pattern)); | |
| Match match = regex.Match(testString); | |
| Assert.AreEqual("400", match.Groups["points"].ToString()); | |
| Assert.AreEqual("2", match.Groups["nights"].ToString()); | |
| Assert.AreEqual("Minas Tirith Airport", match.Groups["property"].ToString()); | |
| } | |
| } | |
| public class MainClass | |
| { | |
| public static void Main() | |
| { | |
| return; | |
| } | |
| } |
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