完成PAC生成和从GFWList更新

Pods/Alamofire/Source/Validation.swift

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+//
+//  Validation.swift
+//
+//  Copyright (c) 2014-2016 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+extension Request {
+
+    /**
+        Used to represent whether validation was successful or encountered an error resulting in a failure.
+
+        - Success: The validation was successful.
+        - Failure: The validation failed encountering the provided error.
+    */
+    public enum ValidationResult {
+        case Success
+        case Failure(NSError)
+    }
+
+    /**
+        A closure used to validate a request that takes a URL request and URL response, and returns whether the 
+        request was valid.
+    */
+    public typealias Validation = (NSURLRequest?, NSHTTPURLResponse) -> ValidationResult
+
+    /**
+        Validates the request, using the specified closure.
+
+        If validation fails, subsequent calls to response handlers will have an associated error.
+
+        - parameter validation: A closure to validate the request.
+
+        - returns: The request.
+    */
+    public func validate(validation: Validation) -> Self {
+        delegate.queue.addOperationWithBlock {
+            if let
+                response = self.response where self.delegate.error == nil,
+                case let .Failure(error) = validation(self.request, response)
+            {
+                self.delegate.error = error
+            }
+        }
+
+        return self
+    }
+
+    // MARK: - Status Code
+
+    /**
+        Validates that the response has a status code in the specified range.
+
+        If validation fails, subsequent calls to response handlers will have an associated error.
+
+        - parameter range: The range of acceptable status codes.
+
+        - returns: The request.
+    */
+    public func validate<S: SequenceType where S.Generator.Element == Int>(statusCode acceptableStatusCode: S) -> Self {
+        return validate { _, response in
+            if acceptableStatusCode.contains(response.statusCode) {
+                return .Success
+            } else {
+                let failureReason = "Response status code was unacceptable: \(response.statusCode)"
+
+                let error = NSError(
+                    domain: Error.Domain,
+                    code: Error.Code.StatusCodeValidationFailed.rawValue,
+                    userInfo: [
+                        NSLocalizedFailureReasonErrorKey: failureReason,
+                        Error.UserInfoKeys.StatusCode: response.statusCode
+                    ]
+                )
+
+                return .Failure(error)
+            }
+        }
+    }
+
+    // MARK: - Content-Type
+
+    private struct MIMEType {
+        let type: String
+        let subtype: String
+
+        init?(_ string: String) {
+            let components: [String] = {
+                let stripped = string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
+                let split = stripped.substringToIndex(stripped.rangeOfString(";")?.startIndex ?? stripped.endIndex)
+                return split.componentsSeparatedByString("/")
+            }()
+
+            if let
+                type = components.first,
+                subtype = components.last
+            {
+                self.type = type
+                self.subtype = subtype
+            } else {
+                return nil
+            }
+        }
+
+        func matches(MIME: MIMEType) -> Bool {
+            switch (type, subtype) {
+            case (MIME.type, MIME.subtype), (MIME.type, "*"), ("*", MIME.subtype), ("*", "*"):
+                return true
+            default:
+                return false
+            }
+        }
+    }
+
+    /**
+        Validates that the response has a content type in the specified array.
+
+        If validation fails, subsequent calls to response handlers will have an associated error.
+
+        - parameter contentType: The acceptable content types, which may specify wildcard types and/or subtypes.
+
+        - returns: The request.
+    */
+    public func validate<S : SequenceType where S.Generator.Element == String>(contentType acceptableContentTypes: S) -> Self {
+        return validate { _, response in
+            guard let validData = self.delegate.data where validData.length > 0 else { return .Success }
+
+            if let
+                responseContentType = response.MIMEType,
+                responseMIMEType = MIMEType(responseContentType)
+            {
+                for contentType in acceptableContentTypes {
+                    if let acceptableMIMEType = MIMEType(contentType) where acceptableMIMEType.matches(responseMIMEType) {
+                        return .Success
+                    }
+                }
+            } else {
+                for contentType in acceptableContentTypes {
+                    if let MIMEType = MIMEType(contentType) where MIMEType.type == "*" && MIMEType.subtype == "*" {
+                        return .Success
+                    }
+                }
+            }
+
+            let contentType: String
+            let failureReason: String
+
+            if let responseContentType = response.MIMEType {
+                contentType = responseContentType
+
+                failureReason = (
+                    "Response content type \"\(responseContentType)\" does not match any acceptable " +
+                    "content types: \(acceptableContentTypes)"
+                )
+            } else {
+                contentType = ""
+                failureReason = "Response content type was missing and acceptable content type does not match \"*/*\""
+            }
+
+            let error = NSError(
+                domain: Error.Domain,
+                code: Error.Code.ContentTypeValidationFailed.rawValue,
+                userInfo: [
+                    NSLocalizedFailureReasonErrorKey: failureReason,
+                    Error.UserInfoKeys.ContentType: contentType
+                ]
+            )
+
+            return .Failure(error)
+        }
+    }
+
+    // MARK: - Automatic
+
+    /**
+        Validates that the response has a status code in the default acceptable range of 200...299, and that the content 
+        type matches any specified in the Accept HTTP header field.
+
+        If validation fails, subsequent calls to response handlers will have an associated error.
+
+        - returns: The request.
+    */
+    public func validate() -> Self {
+        let acceptableStatusCodes: Range<Int> = 200..<300
+        let acceptableContentTypes: [String] = {
+            if let accept = request?.valueForHTTPHeaderField("Accept") {
+                return accept.componentsSeparatedByString(",")
+            }
+
+            return ["*/*"]
+        }()
+
+        return validate(statusCode: acceptableStatusCodes).validate(contentType: acceptableContentTypes)
+    }
+}