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Versioning.swift
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Versioning.swift
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/*
This source file is part of the Swift.org open source project
Copyright (c) 2014 - 2017 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 Swift project authors
*/
// Import the custom version string (generated via the bootstrap script), if
// available.
#if HasCustomVersionString
import VersionInfo
#endif
/// A Swift version number.
///
/// Note that these are *NOT* semantically versioned numbers.
public struct SwiftVersion {
/// The version number.
public var version: (major: Int, minor: Int, patch: Int)
/// Whether or not this is a development version.
public var isDevelopment: Bool
/// Build information, as an unstructured string.
public var buildIdentifier: String?
/// The major component of the version number.
public var major: Int { return version.major }
/// The minor component of the version number.
public var minor: Int { return version.minor }
/// The patch component of the version number.
public var patch: Int { return version.patch }
/// The version as a readable string.
public var displayString: String {
var result = "\(major).\(minor).\(patch)"
if isDevelopment {
result += "-dev"
}
if let buildIdentifier = self.buildIdentifier {
result += " (" + buildIdentifier + ")"
}
return result
}
/// The complete product version display string (including the name).
public var completeDisplayString: String {
var vendorPrefix = ""
#if HasCustomVersionString
vendorPrefix += String(cString: VersionInfo.VendorNameString()) + " "
#endif
return vendorPrefix + "Swift Package Manager - Swift " + displayString
}
/// The list of version specific identifiers to search when attempting to
/// load version specific package or version information, in order of
/// preference.
public var versionSpecificKeys: [String] {
return [
"@swift-\(major).\(minor).\(patch)",
"@swift-\(major).\(minor)",
"@swift-\(major)",
]
}
}
private func getBuildIdentifier() -> String? {
#if HasCustomVersionString
return String(cString: VersionInfo.BuildIdentifierString())
#else
return nil
#endif
}
/// Version support for the package manager.
public struct Versioning {
/// The current version of the package manager.
public static let currentVersion = SwiftVersion(
version: (4, 0, 0),
isDevelopment: true,
buildIdentifier: getBuildIdentifier())
/// The list of version specific "keys" to search when attempting to load
/// version specific package or version information, in order of preference.
public static let currentVersionSpecificKeys = currentVersion.versionSpecificKeys
}