Add a Signature struct

SwiftGit2/Objects.swift

@@ -6,12 +6,36 @@
 //  Copyright (c) 2014 GitHub, Inc. All rights reserved.
 //
 
+import Foundation
+
 /// A git object.
 public protocol Object {
 	/// The OID of the object.
 	var oid: OID { get }
 }
 
+public struct Signature {
+	/// The name of the person.
+	public let name: String
+	
+	/// The email of the person.
+	public let email: String
+	
+	/// The time when the action happened.
+	public let time: NSDate
+	
+	/// The time zone that `time` should be interpreted relative to.
+	public let timeZone: NSTimeZone
+	
+	/// Create an instance with a libgit2 `git_signature`.
+	public init(signature: git_signature) {
+		name = String.fromCString(signature.name)!
+		email = String.fromCString(signature.email)!
+		time = NSDate(timeIntervalSince1970: NSTimeInterval(signature.when.time))
+		timeZone = NSTimeZone(forSecondsFromGMT: NSInteger(60 * signature.when.offset))
+	}
+}
+
 /// A git commit.
 public struct Commit: Object {
 	public let oid: OID

SwiftGit2Tests/ObjectsSpec.swift

@@ -11,16 +11,48 @@ import SwiftGit2
 import Nimble
 import Quick
 
-class CommitSpec: QuickSpec {
+func from_git_object<T>(repository: Repository, oid: OID, f: COpaquePointer -> T) -> T{
+	let repository = repository.pointer
+	var oid = oid.oid
+	
+	let pointer = UnsafeMutablePointer<COpaquePointer>.alloc(1)
+	git_object_lookup(pointer, repository, &oid, GIT_OBJ_ANY)
+	let result = f(pointer.memory)
+	git_object_free(pointer.memory)
+	pointer.dealloc(1)
+	
+	return result
+}
+
+class SignatureSpec: QuickSpec {
 	override func spec() {
-		describe("init(pointer:)") {
+		describe("init(signature:)") {
-			it("should set its properties") {
+			it("should initialize its properties") {
 				let repo = Fixtures.simpleRepository
 				let oid = OID(string: "dc220a3f0c22920dab86d4a8d3a3cb7e69d6205a")!
 				
-				let commit = repo.commitWithOID(oid).value()
+				let raw_signature = from_git_object(repo, oid) { git_commit_author($0).memory }
-				expect(commit?.oid).to(equal(oid))
+				let signature = Signature(signature: raw_signature)
-				expect(commit?.message).to(equal("Create a README\n"))
+				
+				expect(signature.name).to(equal("Matt Diephouse"))
+				expect(signature.email).to(equal("matt@diephouse.com"))
+				expect(signature.time).to(equal(NSDate(timeIntervalSince1970: 1416186947)))
+				expect(signature.timeZone.abbreviation).to(equal("GMT-5"))
+			}
+		}
+	}
+}
+
+class CommitSpec: QuickSpec {
+	override func spec() {
+		describe("init(pointer:)") {
+			it("should initialize its properties") {
+				let repo = Fixtures.simpleRepository
+				let oid = OID(string: "dc220a3f0c22920dab86d4a8d3a3cb7e69d6205a")!
+				
+				let commit = from_git_object(repo, oid) { Commit(pointer: $0) }
+				expect(commit.oid).to(equal(oid))
+				expect(commit.message).to(equal("Create a README\n"))
 			}
 		}
 	}