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- import Foundation
- public protocol ImageDataProvider {
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- var cacheKey: String { get }
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- func data(handler: @escaping (Result<Data, Error>) -> Void)
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- var contentURL: URL? { get }
- }
- public extension ImageDataProvider {
- var contentURL: URL? { return nil }
- func convertToSource() -> Source {
- .provider(self)
- }
- }
- public struct LocalFileImageDataProvider: ImageDataProvider {
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- public let fileURL: URL
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- public init(fileURL: URL, cacheKey: String? = nil) {
- self.fileURL = fileURL
- self.cacheKey = cacheKey ?? fileURL.absoluteString
- }
-
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- public var cacheKey: String
- public func data(handler: (Result<Data, Error>) -> Void) {
- handler(Result(catching: { try Data(contentsOf: fileURL) }))
- }
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- public var contentURL: URL? {
- return fileURL
- }
- }
- public struct Base64ImageDataProvider: ImageDataProvider {
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- public let base64String: String
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- public init(base64String: String, cacheKey: String) {
- self.base64String = base64String
- self.cacheKey = cacheKey
- }
-
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- public var cacheKey: String
- public func data(handler: (Result<Data, Error>) -> Void) {
- let data = Data(base64Encoded: base64String)!
- handler(.success(data))
- }
- }
- public struct RawImageDataProvider: ImageDataProvider {
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- public let data: Data
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- public init(data: Data, cacheKey: String) {
- self.data = data
- self.cacheKey = cacheKey
- }
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- public var cacheKey: String
- public func data(handler: @escaping (Result<Data, Error>) -> Void) {
- handler(.success(data))
- }
- }
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