MarcusMedina.Fluent.Pattern 1.0.0

MarcusMedina.Fluent.Pattern

Fluent string pattern matching and analysis for .NET 10+

I detta fall ville jag förenkla användandet av mönsterigenkänning i C#. Strängmönster, regex, wildcards — samlat i ett Fluent API så man slipper tänka på implementationen varje gång.

SQL-inspired patterns (LIKE, IN, BETWEEN), fuzzy matching (Levenshtein, Jaro-Winkler, Jaccard), string type detection (email, URL, IP, MAC, GUID, JSON, XML and more), and utility methods (palindromes, anagrams, pangrams, phonetic keys).

Features

• ✅ SQL-style — IsLike, IsNotLike, In, NotIn, Between
• ✅ Shorthand — LikeContains, LikeStartsWith, LikeEndsWith
• ✅ Fuzzy matching — LevenshteinDistance, SimilarityTo, IsSimilarTo
• ✅ Advanced distance — DamerauLevenshtein, Hamming, Jaccard, JaroWinkler
• ✅ String analysis — IsPalindrome, IsAnagramOf, IsPangram, LongestCommonSubstring
• ✅ Validation — IsEmail, IsUrl, IsIpAddress
• ✅ Type detection — DetectStringType() returns a StringType enum
• ✅ Phonetic matching — PhoneticKey() (Soundex-inspired)
• ✅ Zero dependencies — Pure .NET, no external packages

Installation

dotnet add package MarcusMedina.Fluent.Pattern

Requirements: .NET 10.0+, C# 14.0+

Quick Start

using MarcusMedina.Fluent.Pattern;

// SQL-like pattern matching
"hello world".IsLike("hello%");       // true
"hello world".IsNotLike("goodbye%");  // true

// Shorthand
"hello world".LikeContains("world");    // true
"hello world".LikeStartsWith("he");     // true
"hello world".LikeEndsWith("ld");       // true

// Set membership
"apple".In("apple", "banana", "cherry");      // true
"grape".NotIn("apple", "banana");             // true
"m".Between("a", "z");                        // true

// Fuzzy matching
"hello".SimilarityTo("hallo");                // ~0.8
"hello".IsSimilarTo("hallo");                 // true (default threshold 0.7)
"Kalle".LevenshteinDistance("Kålle");         // 1
"teh".DamerauLevenshteinDistance("the");      // 1
"karolin".HammingDistance("kathrin");         // 3
"hello".JaccardSimilarity("hallo");           // ~0.33
"Marcus".JaroWinklerSimilarity("Markus");     // ~0.88
"abcdef".LongestCommonSubstring("zbcdf");     // "bcd"

// Validation
"hej@example.com".IsEmail();                  // true
"https://example.com".IsUrl();                // true
"192.168.1.1".IsIpAddress();                  // true

// Type detection
"hej@example.com".DetectStringType();         // StringType.Email
"192.168.1.1".DetectStringType();             // StringType.IpAddress
"{0000-0000...}".DetectStringType();          // StringType.Guid
"42".DetectStringType();                      // StringType.Number

// String analysis
"anna".IsPalindrome();                        // true
"listen".IsAnagramOf("silent");               // true
"The quick brown fox jumps over the lazy dog".IsPangram();  // true
"hello".PhoneticKey();                        // Soundex-style key

API Overview

Pattern Matching

All accept optional caseSensitive parameter (default false).

Fuzzy Matching

Validation & Detection

Text Analysis

StringType Enum

Testing

dotnet test --configuration Release

Tests: 191 passed — covering pattern matching, fuzzy distance, validation, detection, string analysis, null/empty edge cases, and all StringType variants.

License

MIT — see LICENSE for details.

Related Projects

• MarcusMedina.Fluent.Data — CSV, JSON, XML extensions
• MarcusMedina.Fluent.Data.Sql — SQL query builder
• MarcusMedina.Maths.Algebra — Algebraic expressions and symbolic math