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Response.swift
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Response.swift
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import Foundation
public final class Response: CustomDebugStringConvertible, Equatable {
public let statusCode: Int
public let data: NSData
public let response: NSURLResponse?
public init(statusCode: Int, data: NSData, response: NSURLResponse? = nil) {
self.statusCode = statusCode
self.data = data
self.response = response
}
public var description: String {
return "Status Code: \(statusCode), Data Length: \(data.length)"
}
public var debugDescription: String {
return description
}
}
public func ==(lhs: Response, rhs: Response) -> Bool {
return lhs.statusCode == rhs.statusCode
&& lhs.data == rhs.data
&& lhs.response == rhs.response
}
public extension Response {
/// Filters out responses that don't fall within the given range, generating errors when others are encountered.
public func filterStatusCodes(range: ClosedInterval<Int>) throws -> Response {
guard range.contains(statusCode) else {
throw Error.StatusCode(self)
}
return self
}
public func filterStatusCode(code: Int) throws -> Response {
return try filterStatusCodes(code...code)
}
public func filterSuccessfulStatusCodes() throws -> Response {
return try filterStatusCodes(200...299)
}
public func filterSuccessfulStatusAndRedirectCodes() throws -> Response {
return try filterStatusCodes(200...399)
}
/// Maps data received from the signal into a UIImage.
func mapImage() throws -> Image {
guard let image = Image(data: data) else {
throw Error.ImageMapping(self)
}
return image
}
/// Maps data received from the signal into a JSON object.
func mapJSON() throws -> AnyObject {
do {
return try NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
} catch {
throw Error.Underlying(error)
}
}
/// Maps data received from the signal into a String.
func mapString() throws -> String {
guard let string = NSString(data: data, encoding: NSUTF8StringEncoding) else {
throw Error.StringMapping(self)
}
return string as String
}
}