init

.gitignore

@@ -0,0 +1,358 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*[.json, .xml, .info]
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+

IrcTokens.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30011.22
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IrcTokens", "IrcTokens\IrcTokens.csproj", "{9E812F45-B2CD-42D2-8378-EBEBF8697905}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9E812F45-B2CD-42D2-8378-EBEBF8697905}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9E812F45-B2CD-42D2-8378-EBEBF8697905}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9E812F45-B2CD-42D2-8378-EBEBF8697905}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9E812F45-B2CD-42D2-8378-EBEBF8697905}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {0B91F0EA-8564-4318-8EEC-ED0640475141}
+	EndGlobalSection
+EndGlobal

IrcTokens/Hostmask.cs

@@ -0,0 +1,42 @@
+namespace IrcTokens
+{
+    /// <summary>
+    /// Represents the three parts of a hostmask. Parse with the constructor.
+    /// </summary>
+    public class Hostmask
+    {
+        public string NickName { get; set; }
+        public string UserName { get; set; }
+        public string HostName { get; set; }
+
+        public override string ToString() => _source;
+
+        private readonly string _source;
+        
+        public Hostmask(string source)
+        {
+            if (source == null) return;
+
+            _source = source;
+
+            if (source.Contains('@'))
+            {
+                var split = source.Split('@');
+
+                NickName = split[0];
+                HostName = split[1];
+            }
+            else
+            {
+                NickName = source;
+            }
+            
+            if (NickName.Contains('!'))
+            {
+                var userSplit = NickName.Split('!');
+                NickName = userSplit[0];
+                UserName = userSplit[1];
+            }
+        }
+    }
+}

IrcTokens/IrcTokens.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
+    <PackageReference Include="YamlDotNet" Version="8.1.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Tests\Data\msg-join.yaml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Tests\Data\msg-split.yaml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

IrcTokens/Line.cs

@@ -0,0 +1,139 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace IrcTokens
+{
+    /// <summary>
+    /// Tools to represent, parse, and format IRC lines
+    /// </summary>
+    public class Line
+    {
+        public Dictionary<string, string> Tags { get; set; }
+        public string Source { get; set; }
+        public string Command { get; set; }
+        public List<string> Params { get; set; }
+
+        private Hostmask _hostmask;
+        private string _rawLine;
+
+        public override string ToString() => 
+            $"Line(tags={string.Join(";", Tags.Select(kvp => $"{kvp.Key}={kvp.Value}"))}, params={string.Join(",", Params)})";
+
+        public Hostmask Hostmask =>
+            _hostmask ??= new Hostmask(Source);
+
+        public Line() { }
+
+        /// <summary>
+        /// Build new <see cref="Line"/> object parsed from <param name="line">a string</param>. Analogous to irctokens.tokenise()
+        /// </summary>
+        /// <param name="line">irc line to parse</param>
+        public Line(string line)
+        {
+            _rawLine = line;
+            string[] split;
+
+            if (line.StartsWith('@'))
+            {
+                Tags = new Dictionary<string, string>();
+
+                split = line.Split(" ");
+                var messageTags = split[0];
+                line = string.Join(" ", split.Skip(1));
+
+                foreach (var part in messageTags.Substring(1).Split(';'))
+                {
+                    if (part.Contains('='))
+                    {
+                        split = part.Split('=');
+                        Tags[split[0]] = Protocol.UnescapeTag(split[1]);
+                    }
+                    else
+                    {
+                        Tags[part] = string.Empty;
+                    }
+                }
+            }
+
+            string trailing;
+            if (line.Contains(" :"))
+            {
+                split = line.Split(" :");
+                line = split[0];
+                trailing = string.Join(" :", split.Skip(1));
+            }
+            else
+            {
+                trailing = null;
+            }
+
+            Params = line.Contains(' ')
+                ? line.Split(' ').Where(p => !string.IsNullOrWhiteSpace(p)).ToList()
+                : new List<string> {line};
+
+            if (Params[0].StartsWith(':'))
+            {
+                Source = Params[0].Substring(1);
+                Params.RemoveAt(0);
+            }
+
+            if (Params.Count > 0)
+            {
+                Command = Params[0].ToUpper();
+                Params.RemoveAt(0);
+            }
+
+            if (trailing != null)
+            {
+                Params.Add(trailing);
+            }
+        }
+
+        /// <summary>
+        /// Format a <see cref="Line"/> as a standards-compliant IRC line
+        /// </summary>
+        /// <returns>formatted irc line</returns>
+        public string Format()
+        {
+            var outs = new List<string>();
+
+            if (Tags != null && Tags.Any())
+            {
+                var tags = Tags.Keys
+                    .Select(key => string.IsNullOrWhiteSpace(Tags[key]) ? key : $"{key}={Protocol.EscapeTag(Tags[key])}")
+                    .ToList();
+
+                outs.Add($"@{string.Join(";", tags)}");
+            }
+
+            if (Source != null)
+            {
+                outs.Add($":{Source}");
+            }
+
+            outs.Add(Command);
+
+            if (Params != null && Params.Any())
+            {
+                var last = Params[^1];
+                Params.RemoveAt(Params.Count - 1);
+
+                foreach (var p in Params)
+                {
+                    if (p.Contains(' '))
+                        throw new ArgumentException("non-last parameters cannot have spaces");
+                    if (p.StartsWith(':'))
+                        throw new ArgumentException("non-last parameters cannot start with colon");
+                }
+                outs.AddRange(Params);
+
+                if (last == null || string.IsNullOrWhiteSpace(last) || last.Contains(' ') || last.StartsWith(':'))
+                    last = $":{last}";
+                outs.Add(last);
+            }
+
+            return string.Join(" ", outs);
+        }
+    }
+}

IrcTokens/Protocol.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+
+namespace IrcTokens
+{
+    public class Protocol
+    {
+        private static readonly string[] TagUnescaped = new []
+        {
+            "\\", " ", ";", "\r", "\n"
+        };
+
+        private static readonly string[] TagEscaped = new []
+        {
+            "\\\\", "\\s", "\\:", "\\r", "\\n"
+        };
+
+        /// <summary>
+        /// Unescape ircv3 tag
+        /// </summary>
+        /// <param name="val">escaped string</param>
+        /// <returns>unescaped string</returns>
+        public static string UnescapeTag(string val)
+        {
+            var unescaped = new StringBuilder();
+
+            var graphemeIterator = StringInfo.GetTextElementEnumerator(val);
+            graphemeIterator.Reset();
+
+            while (graphemeIterator.MoveNext())
+            {
+                var current = graphemeIterator.GetTextElement();
+
+                if (current == @"\")
+                {
+                    try
+                    {
+                        graphemeIterator.MoveNext();
+                        var next = graphemeIterator.GetTextElement();
+                        var pair = current + next;
+                        unescaped.Append(TagEscaped.Contains(pair)
+                            ? TagUnescaped[Array.IndexOf(TagEscaped, pair)]
+                            : next);
+                    }
+                    catch (InvalidOperationException)
+                    {
+                        // ignored
+                    }
+                }
+                else
+                    unescaped.Append(current);
+            }
+
+            return unescaped.ToString();
+        }
+
+        /// <summary>
+        /// Escape strings for use in ircv3 tags
+        /// </summary>
+        /// <param name="val">string to escape</param>
+        /// <returns>escaped string</returns>
+        public static string EscapeTag(string val)
+        {
+            for (var i = 0; i < TagUnescaped.Length; ++i)
+            {
+                val = val.Replace(TagUnescaped[i], TagEscaped[i]);
+            }
+
+            return val;
+        }
+    }
+}

IrcTokens/Tests/Data/JoinModel.cs

@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+using YamlDotNet.Serialization;
+
+namespace IrcTokens.Tests.Data
+{
+    public class JoinModel
+    {
+        public List<Test> Tests { get; set; }
+
+        public class Test
+        {
+            [YamlMember(Alias = "desc")]
+            public string Description { get; set; }
+
+            public Atoms Atoms { get; set; }
+
+            public List<string> Matches { get; set; }
+        }
+
+        public class Atoms
+        {
+            public Dictionary<string, string> Tags { get; set; }
+
+            public string Source { get; set; }
+
+            public string Verb { get; set; }
+
+            public List<string> Params { get; set; }
+        }
+    }
+}

IrcTokens/Tests/Data/SplitModel.cs

@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+namespace IrcTokens.Tests.Data
+{
+    public class SplitModel
+    {
+        public List<Test> Tests { get; set; }
+
+        public class Test
+        {
+            public string Input { get; set; }
+            public JoinModel.Atoms Atoms { get; set; }
+        }
+    }
+}

IrcTokens/Tests/Data/msg-join.yaml

@@ -0,0 +1,221 @@
+# IRC parser tests
+# joining atoms into sendable messages
+
+# Written in 2015 by Daniel Oaks <daniel@danieloaks.net>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along
+# with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+# some of the tests here originate from grawity's test vectors, which is WTFPL v2 licensed
+#   https://github.com/grawity/code/tree/master/lib/tests
+# some of the tests here originate from Mozilla's test vectors, which is public domain
+#   https://dxr.mozilla.org/comm-central/source/chat/protocols/irc/test/test_ircMessage.js
+# some of the tests here originate from SaberUK's test vectors, which he's indicated I am free to include here
+#   https://github.com/SaberUK/ircparser/tree/master/test
+
+tests:
+  # the desc string holds a description of the test, if it exists
+
+  # the atoms dict has the keys:
+  #   * tags: tags dict
+  #       tags with no value are an empty string
+  #   * source: source string, without single leading colon
+  #   * verb: verb string
+  #   * params: params split up as a list
+  # if the params key does not exist, assume it is empty
+  # if any other keys do no exist, assume they are null
+  # a key that is null does not exist or is not specified with the
+  #   given input string
+
+  # matches is a list of messages that match
+
+  # simple tests
+  - desc: Simple test with verb and params.
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf"
+    matches:
+      - "foo bar baz asdf"
+      - "foo bar baz :asdf"
+
+  # with no regular params
+  - desc: Simple test with source and no params.
+    atoms:
+      source: "src"
+      verb: "AWAY"
+    matches:
+      - ":src AWAY"
+
+  - desc: Simple test with source and empty trailing param.
+    atoms:
+      source: "src"
+      verb: "AWAY"
+      params:
+        - ""
+    matches:
+      - ":src AWAY :"
+
+  # with source
+  - desc: Simple test with source.
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf"
+    matches:
+      - ":coolguy foo bar baz asdf"
+      - ":coolguy foo bar baz :asdf"
+
+  # with trailing param
+  - desc: Simple test with trailing param.
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf quux"
+    matches:
+      - "foo bar baz :asdf quux"
+
+  - desc: Simple test with empty trailing param.
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ""
+    matches:
+      - "foo bar baz :"
+
+  - desc: Simple test with trailing param containing colon.
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ":asdf"
+    matches:
+      - "foo bar baz ::asdf"
+
+  # with source and trailing param
+  - desc: Test with source and trailing param.
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf quux"
+    matches:
+      - ":coolguy foo bar baz :asdf quux"
+
+  - desc: Test with trailing containing beginning+end whitespace.
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "  asdf quux "
+    matches:
+      - ":coolguy foo bar baz :  asdf quux "
+
+  - desc: Test with trailing containing what looks like another trailing param.
+    atoms:
+      source: "coolguy"
+      verb: "PRIVMSG"
+      params:
+        - "bar"
+        - "lol :) "
+    matches:
+      - ":coolguy PRIVMSG bar :lol :) "
+
+  - desc: Simple test with source and empty trailing.
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ""
+    matches:
+      - ":coolguy foo bar baz :"
+
+  - desc: Trailing contains only spaces.
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "  "
+    matches:
+      - ":coolguy foo bar baz :  "
+
+  - desc: Param containing tab (tab is not considered SPACE for message splitting).
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "b\tar"
+        - "baz"
+    matches:
+      - ":coolguy foo b\tar baz"
+      - ":coolguy foo b\tar :baz"
+
+  # with tags
+  - desc: Tag with no value and space-filled trailing.
+    atoms:
+      tags:
+        "asd": ""
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "  "
+    matches:
+      - "@asd :coolguy foo bar baz :  "
+
+  - desc: Tags with escaped values.
+    atoms:
+      verb: "foo"
+      tags:
+        "a": "b\\and\nk"
+        "d": "gh;764"
+    matches:
+      - "@a=b\\\\and\\nk;d=gh\\:764 foo"
+      - "@d=gh\\:764;a=b\\\\and\\nk foo"
+
+  - desc: Tags with escaped values and params.
+    atoms:
+      verb: "foo"
+      tags:
+        "a": "b\\and\nk"
+        "d": "gh;764"
+      params:
+        - "par1"
+        - "par2"
+    matches:
+      - "@a=b\\\\and\\nk;d=gh\\:764 foo par1 par2"
+      - "@a=b\\\\and\\nk;d=gh\\:764 foo par1 :par2"
+      - "@d=gh\\:764;a=b\\\\and\\nk foo par1 par2"
+      - "@d=gh\\:764;a=b\\\\and\\nk foo par1 :par2"
+
+  - desc: Tag with long, strange values (including LF and newline).
+    atoms:
+      tags:
+        foo: "\\\\;\\s \r\n"
+      verb: "COMMAND"
+    matches:
+      - "@foo=\\\\\\\\\\:\\\\s\\s\\r\\n COMMAND"

IrcTokens/Tests/Data/msg-split.yaml

@@ -0,0 +1,343 @@
+# IRC parser tests
+# splitting messages into usable atoms
+
+# Written in 2015 by Daniel Oaks <daniel@danieloaks.net>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along
+# with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+# some of the tests here originate from grawity's test vectors, which is WTFPL v2 licensed
+#   https://github.com/grawity/code/tree/master/lib/tests
+# some of the tests here originate from Mozilla's test vectors, which is public domain
+#   https://dxr.mozilla.org/comm-central/source/chat/protocols/irc/test/test_ircMessage.js
+# some of the tests here originate from SaberUK's test vectors, which he's indicated I am free to include here
+#   https://github.com/SaberUK/ircparser/tree/master/test
+
+# we follow RFC1459 with regards to multiple ascii spaces splitting atoms:
+#   The prefix, command, and all parameters are
+#   separated by one (or more) ASCII space character(s) (0x20).
+# because doing it as RFC2812 says (strictly as a single ascii space) isn't sane
+
+tests:
+  # input is the string coming directly from the server to parse
+
+  # the atoms dict has the keys:
+  #   * tags: tags dict
+  #       tags with no value are an empty string
+  #   * source: source string, without single leading colon
+  #   * verb: verb string
+  #   * params: params split up as a list
+  # if the params key does not exist, assume it is empty
+  # if any other keys do no exist, assume they are null
+  # a key that is null does not exist or is not specified with the
+  #   given input string
+
+  # simple
+  - input: "foo bar baz asdf"
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf"
+
+  # with source
+  - input: ":coolguy foo bar baz asdf"
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf"
+
+  # with trailing param
+  - input: "foo bar baz :asdf quux"
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf quux"
+
+  - input: "foo bar baz :"
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ""
+
+  - input: "foo bar baz ::asdf"
+    atoms:
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ":asdf"
+
+  # with source and trailing param
+  - input: ":coolguy foo bar baz :asdf quux"
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "asdf quux"
+
+  - input: ":coolguy foo bar baz :  asdf quux "
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "  asdf quux "
+
+  - input: ":coolguy PRIVMSG bar :lol :) "
+    atoms:
+      source: "coolguy"
+      verb: "PRIVMSG"
+      params:
+        - "bar"
+        - "lol :) "
+
+  - input: ":coolguy foo bar baz :"
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - ""
+
+  - input: ":coolguy foo bar baz :  "
+    atoms:
+      source: "coolguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+        - "  "
+
+  # with tags
+  - input: "@a=b;c=32;k;rt=ql7 foo"
+    atoms:
+      verb: "foo"
+      tags:
+        "a": "b"
+        "c": "32"
+        "k": ""
+        "rt": "ql7"
+
+  # with escaped tags
+  - input: "@a=b\\\\and\\nk;c=72\\s45;d=gh\\:764 foo"
+    atoms:
+      verb: "foo"
+      tags:
+        "a": "b\\and\nk"
+        "c": "72 45"
+        "d": "gh;764"
+
+  # with tags and source
+  - input: "@c;h=;a=b :quux ab cd"
+    atoms:
+      tags:
+        "c": ""
+        "h": ""
+        "a": "b"
+      source: "quux"
+      verb: "ab"
+      params:
+        - "cd"
+
+  # different forms of last param
+  - input: ":src JOIN #chan"
+    atoms:
+      source: "src"
+      verb: "JOIN"
+      params:
+        - "#chan"
+
+  - input: ":src JOIN :#chan"
+    atoms:
+      source: "src"
+      verb: "JOIN"
+      params:
+        - "#chan"
+
+  # with and without last param
+  - input: ":src AWAY"
+    atoms:
+      source: "src"
+      verb: "AWAY"
+
+  - input: ":src AWAY "
+    atoms:
+      source: "src"
+      verb: "AWAY"
+
+  # tab is not considered <SPACE>
+  - input: ":cool\tguy foo bar baz"
+    atoms:
+      source: "cool\tguy"
+      verb: "foo"
+      params:
+        - "bar"
+        - "baz"
+
+  # with weird control codes in the source
+  - input: ":coolguy!ag@net\x035w\x03ork.admin PRIVMSG foo :bar baz"
+    atoms:
+      source: "coolguy!ag@net\x035w\x03ork.admin"
+      verb: "PRIVMSG"
+      params:
+        - "foo"
+        - "bar baz"
+
+  - input: ":coolguy!~ag@n\x02et\x0305w\x0fork.admin PRIVMSG foo :bar baz"
+    atoms:
+      source: "coolguy!~ag@n\x02et\x0305w\x0fork.admin"
+      verb: "PRIVMSG"
+      params:
+        - "foo"
+        - "bar baz"
+
+  - input: "@tag1=value1;tag2;vendor1/tag3=value2;vendor2/tag4= :irc.example.com COMMAND param1 param2 :param3 param3"
+    atoms:
+      tags:
+        tag1: "value1"
+        tag2: ""
+        vendor1/tag3: "value2"
+        vendor2/tag4: ""
+      source: "irc.example.com"
+      verb: "COMMAND"
+      params:
+        - "param1"
+        - "param2"
+        - "param3 param3"
+
+  - input: ":irc.example.com COMMAND param1 param2 :param3 param3"
+    atoms:
+      source: "irc.example.com"
+      verb: "COMMAND"
+      params:
+        - "param1"
+        - "param2"
+        - "param3 param3"
+
+  - input: "@tag1=value1;tag2;vendor1/tag3=value2;vendor2/tag4 COMMAND param1 param2 :param3 param3"
+    atoms:
+      tags:
+        tag1: "value1"
+        tag2: ""
+        vendor1/tag3: "value2"
+        vendor2/tag4: ""
+      verb: "COMMAND"
+      params:
+        - "param1"
+        - "param2"
+        - "param3 param3"
+
+  - input: "COMMAND"
+    atoms:
+      verb: "COMMAND"
+
+  # yaml encoding + slashes is fun
+  - input: "@foo=\\\\\\\\\\:\\\\s\\s\\r\\n COMMAND"
+    atoms:
+      tags:
+        foo: "\\\\;\\s \r\n"
+      verb: "COMMAND"
+
+  # broken messages from unreal
+  - input: ":gravel.mozilla.org 432  #momo :Erroneous Nickname: Illegal characters"
+    atoms:
+      source: "gravel.mozilla.org"
+      verb: "432"
+      params:
+        - "#momo"
+        - "Erroneous Nickname: Illegal characters"
+
+  - input: ":gravel.mozilla.org MODE #tckk +n "
+    atoms:
+      source: "gravel.mozilla.org"
+      verb: "MODE"
+      params:
+        - "#tckk"
+        - "+n"
+
+  - input: ":services.esper.net MODE #foo-bar +o foobar  "
+    atoms:
+      source: "services.esper.net"
+      verb: "MODE"
+      params:
+        - "#foo-bar"
+        - "+o"
+        - "foobar"
+
+  # tag values should be parsed char-at-a-time to prevent wayward replacements.
+  - input: "@tag1=value\\\\ntest COMMAND"
+    atoms:
+      tags:
+        tag1: "value\\ntest"
+      verb: "COMMAND"
+
+  # If a tag value has a slash followed by a character which doesn't need
+  # to be escaped, the slash should be dropped.
+  - input: "@tag1=value\\1 COMMAND"
+    atoms:
+      tags:
+        tag1: "value1"
+      verb: "COMMAND"
+
+  # A slash at the end of a tag value should be dropped
+  - input: "@tag1=value1\\ COMMAND"
+    atoms:
+      tags:
+        tag1: "value1"
+      verb: "COMMAND"
+
+  # Duplicate tags: Parsers SHOULD disregard all but the final occurence 
+  - input: "@tag1=1;tag2=3;tag3=4;tag1=5 COMMAND"
+    atoms:
+      tags:
+        tag1: "5"
+        tag2: "3"
+        tag3: "4"
+      verb: "COMMAND"
+
+  # vendored tags can have the same name as a non-vendored tag
+  - input: "@tag1=1;tag2=3;tag3=4;tag1=5;vendor/tag2=8 COMMAND"
+    atoms:
+      tags:
+        tag1: "5"
+        tag2: "3"
+        tag3: "4"
+        vendor/tag2: "8"
+      verb: "COMMAND"
+
+  # Some parsers handle /MODE in a special way, make sure they do it right
+  - input: ":SomeOp MODE #channel :+i"
+    atoms:
+      source: "SomeOp"
+      verb: "MODE"
+      params:
+      - "#channel"
+      - "+i"
+
+  - input: ":SomeOp MODE #channel +oo SomeUser :AnotherUser"
+    atoms:
+      source: "SomeOp"
+      verb: "MODE"
+      params:
+      - "#channel"
+      - "+oo"
+      - "SomeUser"
+      - "AnotherUser"

IrcTokens/Tests/FormatTests.cs

@@ -0,0 +1,150 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Collections.Generic;
+
+namespace IrcTokens.Tests
+{
+    [TestClass]
+    public class FormatTests
+    {
+        [TestMethod]
+        public void TestTags()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG", 
+                Params = new List<string> {"#channel", "hello"},
+                Tags = new Dictionary<string, string> {{"id", "\\" + " " + ";" + "\r\n"}}
+            }.Format();
+
+            Assert.AreEqual("@id=\\\\\\s\\:\\r\\n PRIVMSG #channel hello", line);
+        }
+
+        [TestMethod]
+        public void TestMissingTag()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG", 
+                Params = new List<string> {"#channel", "hello"}
+            }.Format();
+
+            Assert.AreEqual("PRIVMSG #channel hello", line);
+        }
+
+        [TestMethod]
+        public void TestNullTag()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", "hello"},
+                Tags = new Dictionary<string, string> {{"a", null}}
+            }.Format();
+
+            Assert.AreEqual("@a PRIVMSG #channel hello", line);
+        }
+
+        [TestMethod]
+        public void TestEmptyTag()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", "hello"},
+                Tags = new Dictionary<string, string> {{"a", ""}}
+            }.Format();
+
+            Assert.AreEqual("@a PRIVMSG #channel hello", line);
+        }
+
+        [TestMethod]
+        public void TestSource()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", "hello"},
+                Source = "nick!user@host"
+            }.Format();
+
+            Assert.AreEqual(":nick!user@host PRIVMSG #channel hello", line);
+        }
+
+        [TestMethod]
+        public void TestCommandLowercase()
+        {
+            var line = new Line {Command = "privmsg"}.Format();
+            Assert.AreEqual("privmsg", line);
+        }
+
+        [TestMethod]
+        public void TestCommandUppercase()
+        {
+            var line = new Line {Command = "PRIVMSG"}.Format();
+            Assert.AreEqual("PRIVMSG", line);
+        }
+
+        [TestMethod]
+        public void TestTrailingSpace()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", "hello world"}
+            }.Format();
+
+            Assert.AreEqual("PRIVMSG #channel :hello world", line);
+        }
+
+        [TestMethod]
+        public void TestTrailingNoSpace()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", "helloworld"}
+            }.Format();
+
+            Assert.AreEqual("PRIVMSG #channel helloworld", line);
+        }
+
+        [TestMethod]
+        public void TestTrailingDoubleColon()
+        {
+            var line = new Line
+            {
+                Command = "PRIVMSG",
+                Params = new List<string> {"#channel", ":helloworld"}
+            }.Format();
+
+            Assert.AreEqual("PRIVMSG #channel ::helloworld", line);
+        }
+
+        [TestMethod]
+        public void TestInvalidNonLastSpace()
+        {
+            Assert.ThrowsException<ArgumentException>(() =>
+            {
+                new Line
+                {
+                    Command = "USER",
+                    Params = new List<string> {"user", "0 *", "real name"}
+                }.Format();
+            });
+        }
+
+        [TestMethod]
+        public void TestInvalidNonLastColon()
+        {
+            Assert.ThrowsException<ArgumentException>(() =>
+            {
+                new Line
+                {
+                    Command = "PRIVMSG",
+                    Params = new List<string> {":#channel", "hello"}
+                }.Format();
+            });
+        }
+    }
+}

IrcTokens/Tests/HostmaskTests.cs

@@ -0,0 +1,64 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace IrcTokens.Tests
+{
+    [TestClass]
+    public class HostmaskTests
+    {
+        [TestMethod]
+        public void TestHostmask()
+        {
+            var hostmask = new Hostmask("nick!user@host");
+            Assert.AreEqual("nick", hostmask.NickName);
+            Assert.AreEqual("user", hostmask.UserName);
+            Assert.AreEqual("host", hostmask.HostName);
+        }
+
+        [TestMethod]
+        public void TestNoHostName()
+        {
+            var hostmask = new Hostmask("nick!user");
+            Assert.AreEqual("nick", hostmask.NickName);
+            Assert.AreEqual("user", hostmask.UserName);
+            Assert.IsNull(hostmask.HostName);
+        }
+
+        [TestMethod]
+        public void TestNoUserName()
+        {
+            var hostmask = new Hostmask("nick@host");
+            Assert.AreEqual("nick", hostmask.NickName);
+            Assert.IsNull(hostmask.UserName);
+            Assert.AreEqual("host", hostmask.HostName);
+        }
+
+        [TestMethod]
+        public void TestOnlyNickName()
+        {
+            var hostmask = new Hostmask("nick");
+            Assert.AreEqual("nick", hostmask.NickName);
+            Assert.IsNull(hostmask.UserName);
+            Assert.IsNull(hostmask.HostName);
+        }
+
+        [TestMethod]
+        public void TestHostmaskFromLine()
+        {
+            var line = new Line(":nick!user@host PRIVMSG #channel hello");
+            var hostmask = new Hostmask("nick!user@host");
+            Assert.AreEqual(hostmask.ToString(), line.Hostmask.ToString());
+            Assert.AreEqual("nick", line.Hostmask.NickName);
+            Assert.AreEqual("user", line.Hostmask.UserName);
+            Assert.AreEqual("host", line.Hostmask.HostName);
+        }
+
+        [TestMethod]
+        public void TestEmptyHostmaskFromLine()
+        {
+            var line = new Line("PRIVMSG #channel hello");
+            Assert.IsNull(line.Hostmask.HostName);
+            Assert.IsNull(line.Hostmask.UserName);
+            Assert.IsNull(line.Hostmask.NickName);
+        }
+    }
+}

IrcTokens/Tests/ParserTests.cs

@@ -0,0 +1,55 @@
+using System.Collections.Generic;
+using System.IO;
+using IrcTokens.Tests.Data;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using YamlDotNet.Serialization;
+using YamlDotNet.Serialization.NamingConventions;
+
+namespace IrcTokens.Tests
+{
+    [TestClass]
+    public class ParserTests
+    {
+        private static T LoadYaml<T>(string path)
+        {
+            var deserializer = new DeserializerBuilder()
+                .WithNamingConvention(CamelCaseNamingConvention.Instance)
+                .Build();
+
+            return deserializer.Deserialize<T>(File.ReadAllText(path));
+        }
+
+        [TestMethod]
+        public void TestSplit()
+        {
+            foreach (var test in LoadYaml<SplitModel>("Tests/Data/msg-split.yaml").Tests)
+            {
+                var tokens = new Line(test.Input);
+                var atoms = test.Atoms;
+
+                Assert.AreEqual(atoms.Verb.ToUpper(), tokens.Command, $"command failed on: '{test.Input}'");
+                Assert.AreEqual(atoms.Source, tokens.Source, $"source failed on: '{test.Input}'");
+                CollectionAssert.AreEqual(atoms.Tags, tokens.Tags, $"tags failed on: '{test.Input}'");
+                CollectionAssert.AreEqual(atoms.Params ?? new List<string>(), tokens.Params, $"params failed on: '{test.Input}'");
+            }
+        }
+
+        [TestMethod]
+        public void TestJoin()
+        {
+            foreach (var test in LoadYaml<JoinModel>("Tests/Data/msg-join.yaml").Tests)
+            {
+                var atoms = test.Atoms;
+                var line = new Line
+                {
+                    Command = atoms.Verb,
+                    Params = atoms.Params,
+                    Source = atoms.Source ?? null,
+                    Tags = atoms.Tags
+                }.Format();
+
+                Assert.IsTrue(test.Matches.Contains(line), test.Description);
+            }
+        }
+    }
+}

IrcTokens/Tests/TokenizationTests.cs

@@ -0,0 +1,118 @@
+using System.Collections.Generic;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace IrcTokens.Tests
+{
+    [TestClass]
+    public class TokenizationTests
+    {
+        [TestMethod]
+        public void TestTagsMissing()
+        {
+            var line = new Line("PRIVMSG #channel");
+            Assert.IsNull(line.Tags);
+        }
+
+        [TestMethod]
+        public void TestTagsMissingValue()
+        {
+            var line = new Line("@id= PRIVMSG #channel");
+            Assert.AreEqual(string.Empty, line.Tags["id"]);
+        }
+
+        [TestMethod]
+        public void TestTagsMissingEqual()
+        {
+            var line = new Line("@id PRIVMSG #channel");
+            Assert.AreEqual(string.Empty, line.Tags["id"]);
+        }
+
+        [TestMethod]
+        public void TestTagsUnescape()
+        {
+            var line = new Line(@"@id=1\\\:\r\n\s2 PRIVMSG #channel");
+            Assert.AreEqual("1\\;\r\n 2", line.Tags["id"]);
+        }
+
+        [TestMethod]
+        public void TestTagsOverlap()
+        {
+            var line = new Line(@"@id=1\\\s\\s PRIVMSG #channel");
+            Assert.AreEqual("1\\ \\s", line.Tags["id"]);
+        }
+
+        [TestMethod]
+        public void TestTagsLoneEndSlash()
+        {
+            var line = new Line("@id=1\\ PRIVMSG #channel");
+            Assert.AreEqual("1", line.Tags["id"]);
+        }
+
+        [TestMethod]
+        public void TestSourceWithoutTags()
+        {
+            var line = new Line(":nick!user@host PRIVMSG #channel");
+            Assert.AreEqual("nick!user@host", line.Source);
+        }
+
+        [TestMethod]
+        public void TestSourceWithTags()
+        {
+            var line = new Line("@id=123 :nick!user@host PRIVMSG #channel");
+            Assert.AreEqual("nick!user@host", line.Source);
+        }
+
+        [TestMethod]
+        public void TestSourceMissingWithoutTags()
+        {
+            var line = new Line("PRIVMSG #channel");
+            Assert.IsNull(line.Source);
+        }
+
+        [TestMethod]
+        public void TestSourceMissingWithTags()
+        {
+            var line = new Line("@id=123 PRIVMSG #channel");
+            Assert.IsNull(line.Source);
+        }
+
+        [TestMethod]
+        public void TestCommand()
+        {
+            var line = new Line("privmsg #channel");
+            Assert.AreEqual("PRIVMSG", line.Command);
+        }
+
+        [TestMethod]
+        public void TestParamsTrailing()
+        {
+            var line = new Line("PRIVMSG #channel :hello world");
+            CollectionAssert.AreEqual(new List<string> {"#channel", "hello world"}, line.Params);
+        }
+
+        [TestMethod]
+        public void TestParamsOnlyTrailing()
+        {
+            var line = new Line("PRIVMSG :hello world");
+            CollectionAssert.AreEqual(new List<string> {"hello world"}, line.Params);
+        }
+