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Merge pull request #3 from swift-libp2p/dev/garlic+tests
Additional Protocol Support and Tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| // | ||
| // Garlic.swift | ||
| // | ||
| // Modified by Brandon Toms on 5/1/22. | ||
| // | ||
|
|
||
| import BaseX | ||
| import Foundation | ||
| import Multibase | ||
| import VarInt | ||
|
|
||
| struct Garlic32 { | ||
| static func data(for string: String) throws -> Data { | ||
| if string.count < 55 && string.count != 52 { throw MultiaddrError.invalidGarlicAddress } | ||
| let padded = string + String(repeating: "=", count: string.count % 8) | ||
| let decoded = try BaseEncoding.decode(padded, as: .base32Pad).data // BaseX.decode(string, as: .custom(Garlic32.alphabet)) | ||
| if decoded.count < 35 && decoded.count != 32 { throw MultiaddrError.invalidGarlicAddress } | ||
| return Data(VarInt.putUVarInt(UInt64(decoded.count)) + decoded) | ||
| } | ||
|
|
||
| static func string(for data: Data) throws -> String { | ||
| if data.count < 35 && data.count != 32 { throw MultiaddrError.invalidGarlicAddress } | ||
| var encoded = data.asString(base: .base32Pad) //BaseX.encode(data, into: .custom(Garlic32.alphabet)) | ||
| while encoded.last == "=" { encoded.removeLast() } | ||
| if encoded.count < 55 && encoded.count != 52 { throw MultiaddrError.invalidGarlicAddress } | ||
| return encoded | ||
| } | ||
| } | ||
|
|
||
| struct Garlic64 { | ||
| static let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-~" | ||
|
|
||
| static func data(for string: String) throws -> Data { | ||
| guard string.count >= 516 && string.count <= 616 else { throw MultiaddrError.invalidGarlicAddress } | ||
| let decoded = try BaseX.decode(string, as: .custom(Garlic64.alphabet)) | ||
| guard decoded.count >= 386 else { throw MultiaddrError.invalidGarlicAddress } | ||
| return Data(VarInt.putUVarInt(UInt64(decoded.count)) + decoded) | ||
| } | ||
|
|
||
| static func string(for data: Data) throws -> String { | ||
| guard data.count >= 386 else { throw MultiaddrError.invalidGarlicAddress } | ||
| let encoded = BaseX.encode(data, into: .custom(Garlic64.alphabet)) | ||
| guard encoded.count >= 516 && encoded.count <= 616 else { throw MultiaddrError.invalidGarlicAddress } | ||
| return encoded | ||
| } | ||
| } |
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