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// Foundation/URLSession/libcurlHelpers - URLSession & libcurl
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
// -----------------------------------------------------------------------------
///
/// These are libcurl helpers for the URLSession API code.
/// - SeeAlso: https://curl.haxx.se/libcurl/c/
/// - SeeAlso: URLSession.swift
///
// -----------------------------------------------------------------------------
@_implementationOnly import _CFURLSessionInterface
//TODO: Move things in this file?
internal func initializeLibcurl() {
try! CFURLSessionInit().asError()
}
internal extension String {
/// Create a string by a buffer of UTF 8 code points that is not zero
/// terminated.
init?(utf8Buffer: UnsafeBufferPointer<UInt8>) {
var bufferIterator = utf8Buffer.makeIterator()
var codec = UTF8()
var result: String = ""
iter: repeat {
switch codec.decode(&bufferIterator) {
case .scalarValue(let scalar):
result.append(String(describing: scalar))
case .error:
return nil
case .emptyInput:
break iter
}
} while true
self.init(stringLiteral: result)
}
}
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