ADRaffy.ENSNormalize — nugetz
pkg
adraffy/ ADRaffy.ENSNormalize v0.3.1 .NET FW3.5 .NET FW4.5.1 .NET FW4.6.1 .NET Std1.1
Ethereum Name Service ENS-15 Name Normalization
Get Started dotnet CLI PackageReference Package Manager
$ dotnet add package ADRaffy.ENSNormalizeReadme ENSNormalize.cs
0-dependency ENSIP-15 in C#
using ADRaffy.ENSNormalize;
ENSNormalize.ENSIP15 // Main Library (global instance)
// string -> string
// throws on invalid names
ENSNormalize.ENSIP15.Normalize("RaFFY🚴♂️.eTh"); // "raffy🚴♂.eth"
// works like Normalize()
ENSNormalize.ENSIP15.Beautify("1⃣2⃣.eth"); // "1️⃣2️⃣.eth"
Additional NormDetails (Experimental)
// works like Normalize(), throws on invalid names
// string -> NormDetails
NormDetails details = ENSNormalize.ENSIP15.NormalizeDetails("💩ì.a");
string Name; // normalized name
bool PossiblyConfusing; // if name should be carefully reviewed
HashSet<Group> Groups; // unique groups in name
HashSet<EmojiSequence> Emojis; // unique emoji in name
string GroupDescription = "Emoji+Latin"; // group summary for name
bool HasZWJEmoji; // if any emoji contain 200D
Output-based Tokenization Label // string -> Label[]
// never throws
Label[] labels = ENSNormalize.ENSIP15.Split("💩Raffy.eth_");
// [
// Label {
// Input: [ 128169, 82, 97, 102, 102, 121 ],
// Tokens: [
// OutputToken { Codepoints: [ 128169 ], IsEmoji: true }
// OutputToken { Codepoints: [ 114, 97, 102, 102, 121 ] }
// ],
// Normalized: [ 128169, 114, 97, 102, 102, 121 ],
// Group: Group { Name: "Latin", ... }
// },
// Label {
// Input: [ 101, 116, 104, 95 ],
// Tokens: [
// OutputToken { Codepoints: [ 101, 116, 104, 95 ] }
// ],
// Error: NormException { Kind: "underscore allowed only at start" }
// }
// ]
Normalization Properties
Group — ENSIP15.Groups: IList<Group>EmojiSequence — ENSIP15.Emojis: IList<EmojiSequence>Whole — ENSIP15.Wholes: IList<Whole>
Error Handling All errors are safe to print. NormException { Kind: string, Reason: string? } is the base exception. Functions that accept names as input wrap their exceptions in InvalidLabelException { Label: string, Error: NormException } for additional context.
"disallowed character" — DisallowedCharacterException { Codepoint }"illegal mixture" — IllegalMixtureException { Codepoint, Group, OtherGroup? }"whole-script confusable" — ConfusableException { Group, OtherGroup }"empty label""duplicate non-spacing marks""excessive non-spacing marks""leading fenced""adjacent fenced""trailing fenced""leading combining mark""emoji + combining mark""invalid label extension""underscore allowed only at start"
Utilities Normalize name fragments for substring search:
// string -> string
// only throws InvalidLabelException w/DisallowedCharacterException
ENSNormalize.ENSIP15.NormalizeFragment("AB--");
ENSNormalize.ENSIP15.NormalizeFragment("..\u0300");
ENSNormalize.ENSIP15.NormalizeFragment("\u03BF\u043E");
// note: Normalize() throws on these
// int -> string
ENSNormalize.ENSIP15.SafeCodepoint(0x303); // "◌̃"
ENSNormalize.ENSIP15.SafeCodepoint(0xFE0F); // "{FE0F}"
// IList<int> -> string
ENSNormalize.ENSIP15.SafeImplode(new int[]{ 0x303, 0xFE0F }); // "◌̃{FE0F}"
Determine if a character shouldn't be printed directly:
// ReadOnlyIntSet (like IReadOnlySet<int>)
ENSNormalize.ENSIP15.ShouldEscape.Contains(0x202E); // RIGHT-TO-LEFT OVERRIDE => true
Determine if a character is a combining mark:
// ReadOnlyIntSet
ENSNormalize.ENSIP15.CombiningMarks.Contains(0x20E3); // COMBINING ENCLOSING KEYCAP => true
Unicode Normalization Forms NF using ADRaffy.ENSNormalize;
// string -> string
ENSNormalize.NF.NFC("\x65\u0300"); // "\xE8"
ENSNormalize.NF.NFD("\xE8"); // "\x65\u0300"
// IEnumerable<int> -> List<int>
ENSNormalize.NF.NFC(new int[]{ 0x65, 0x300 }); // [0xE8]
ENSNormalize.NF.NFD(new int[]{ 0xE8 }); // [0x65, 0x300]
Compatibility .NET FW3.5
.NET FW4.5.1
.NET FW4.6.1
.NET Std1.1
.NET3.1
.NET 5.0
.NET Std2.0
