mirror of
https://github.com/RevenueCat/purchases-ios
synced 2026-11-10 22:45:55 +05:45
NachoSoto
c55d421fa6
I noticed that the existing implementation was creating many copies of the string as it grows, which isn't very efficient. The new implementation allocates the required size initially and writes to the same buffer inside the loop.
57 lines
1.2 KiB
Swift
57 lines
1.2 KiB
Swift
//
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// Copyright RevenueCat Inc. All Rights Reserved.
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//
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// Licensed under the MIT License (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://opensource.org/licenses/MIT
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//
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// Data+Extensions.swift
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// Purchases
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//
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// Created by Josh Holtz on 6/28/21.
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//
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import Foundation
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extension NSData {
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func asString() -> String {
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// 2 characters per byte
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let deviceTokenString = NSMutableString(capacity: self.length * 2)
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self.enumerateBytes { bytes, byteRange, _ in
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for index in stride(from: 0, to: byteRange.length, by: 1) {
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let byte = bytes.load(fromByteOffset: index, as: UInt8.self)
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deviceTokenString.appendFormat("%02x", byte)
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}
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}
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return deviceTokenString as String
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}
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var uuid: UUID? {
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let bytes = [UInt8](self)
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return NSUUID(uuidBytes: bytes) as UUID
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}
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}
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extension Data {
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var asString: String {
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return (self as NSData).asString()
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}
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// Returns a string representing a fetch token.
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var asFetchToken: String {
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return self.base64EncodedString()
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}
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var uuid: UUID? {
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(self as NSData).uuid
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}
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}
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