rename to cache and refactor

2026-03-18 20:02:25 +00:00 · 2018-11-08 21:36:12 +11:00
parent ca5ad9bf14
commit f9be03ebc8
5 changed files with 395 additions and 53 deletions
@@ -0,0 +1,33 @@
+import Foundation
+import ProjectSpec
+
+
+public class CacheFile {
+
+    public let string: String
+
+    init?(version: Version, projectDictionary: [String: Any], project: Project) throws {
+
+        guard #available(OSX 10.13, *) else { return nil }
+
+        let files = Array(Set(project.allFiles))
+            .map { $0.byRemovingBase(path: project.basePath).string }
+            .sorted { $0.localizedStandardCompare($1) == .orderedAscending }
+            .joined(separator: "\n")
+
+        let data = try JSONSerialization.data(withJSONObject: projectDictionary, options: [.sortedKeys, .prettyPrinted])
+        let spec = String(data: data, encoding: .utf8)!
+
+        string = """
+        # XCODEGEN VERSION
+        \(version)
+
+        # SPEC
+        \(spec)
+
+        # FILES
+        \(files)"
+
+        """
+    }
+}
@@ -0,0 +1,277 @@
+// To date, adding CommonCrypto to a Swift framework is problematic. See:
+// http://stackoverflow.com/questions/25248598/importing-commoncrypto-in-a-swift-framework
+// We're using a subset and modified version of CryptoSwift as an alternative.
+// The following is an altered source version that only includes MD5. The original software can be found at:
+// https://github.com/krzyzanowskim/CryptoSwift
+// This is the original copyright notice:
+
+/*
+ Copyright (C) 2014 Marcin Krzyżanowski <marcin.krzyzanowski@gmail.com>
+ This software is provided 'as-is', without any express or implied warranty.
+ In no event will the authors be held liable for any damages arising from the use of this software.
+ Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
+ - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
+ - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+ - This notice may not be removed or altered from any source or binary distribution.
+ */
+
+import Foundation
+
+extension String {
+    public var md5: String {
+        if let data = data(using: .utf8, allowLossyConversion: true) {
+            let message = data.withUnsafeBytes { bytes -> [UInt8] in
+                return Array(UnsafeBufferPointer(start: bytes, count: data.count))
+            }
+
+            let MD5Calculator = MD5(message)
+            let MD5Data = MD5Calculator.calculate()
+
+            var MD5String = String()
+            for c in MD5Data {
+                MD5String += String(format: "%02x", c)
+            }
+            return MD5String
+
+        } else {
+            return self
+        }
+    }
+}
+
+/** array of bytes, little-endian representation */
+func arrayOfBytes<T>(_ value: T, length: Int? = nil) -> [UInt8] {
+    let totalBytes = length ?? (MemoryLayout<T>.size * 8)
+
+    let valuePointer = UnsafeMutablePointer<T>.allocate(capacity: 1)
+    valuePointer.pointee = value
+
+    let bytes = valuePointer.withMemoryRebound(to: UInt8.self, capacity: totalBytes) { (bytesPointer) -> [UInt8] in
+        var bytes = [UInt8](repeating: 0, count: totalBytes)
+        for j in 0 ..< min(MemoryLayout<T>.size, totalBytes) {
+            bytes[totalBytes - 1 - j] = (bytesPointer + j).pointee
+        }
+        return bytes
+    }
+
+    #if swift(>=4.1)
+    valuePointer.deinitialize(count: 1)
+    valuePointer.deallocate()
+    #else
+    valuePointer.deinitialize()
+    valuePointer.deallocate(capacity: 1)
+    #endif
+
+    return bytes
+}
+
+extension Int {
+    /** Array of bytes with optional padding (little-endian) */
+    func bytes(_ totalBytes: Int = MemoryLayout<Int>.size) -> [UInt8] {
+        return arrayOfBytes(self, length: totalBytes)
+    }
+}
+
+extension NSMutableData {
+    /** Convenient way to append bytes */
+    func appendBytes(_ arrayOfBytes: [UInt8]) {
+        append(arrayOfBytes, length: arrayOfBytes.count)
+    }
+}
+
+protocol HashProtocol {
+    var message: Array<UInt8> { get }
+
+    /** Common part for hash calculation. Prepare header data. */
+    func prepare(_ len: Int) -> Array<UInt8>
+}
+
+extension HashProtocol {
+    func prepare(_ len: Int) -> Array<UInt8> {
+        var tmpMessage = message
+
+        // Step 1. Append Padding Bits
+        tmpMessage.append(0x80) // append one bit (UInt8 with one bit) to message
+
+        // append "0" bit until message length in bits ≡ 448 (mod 512)
+        var msgLength = tmpMessage.count
+        var counter = 0
+
+        while msgLength % len != (len - 8) {
+            counter += 1
+            msgLength += 1
+        }
+
+        tmpMessage += Array<UInt8>(repeating: 0, count: counter)
+        return tmpMessage
+    }
+}
+
+func toUInt32Array(_ slice: ArraySlice<UInt8>) -> Array<UInt32> {
+    var result = Array<UInt32>()
+    result.reserveCapacity(16)
+
+    for idx in stride(from: slice.startIndex, to: slice.endIndex, by: MemoryLayout<UInt32>.size) {
+        let d0 = UInt32(slice[idx.advanced(by: 3)]) << 24
+        let d1 = UInt32(slice[idx.advanced(by: 2)]) << 16
+        let d2 = UInt32(slice[idx.advanced(by: 1)]) << 8
+        let d3 = UInt32(slice[idx])
+        let val: UInt32 = d0 | d1 | d2 | d3
+
+        result.append(val)
+    }
+    return result
+}
+
+struct BytesIterator: IteratorProtocol {
+    let chunkSize: Int
+    let data: [UInt8]
+
+    init(chunkSize: Int, data: [UInt8]) {
+        self.chunkSize = chunkSize
+        self.data = data
+    }
+
+    var offset = 0
+
+    mutating func next() -> ArraySlice<UInt8>? {
+        let end = min(chunkSize, data.count - offset)
+        let result = data[offset ..< offset + end]
+        offset += result.count
+        return result.count > 0 ? result : nil
+    }
+}
+
+struct BytesSequence: Sequence {
+    let chunkSize: Int
+    let data: [UInt8]
+
+    func makeIterator() -> BytesIterator {
+        return BytesIterator(chunkSize: chunkSize, data: data)
+    }
+}
+
+func rotateLeft(_ value: UInt32, bits: UInt32) -> UInt32 {
+    return ((value << bits) & 0xFFFF_FFFF) | (value >> (32 - bits))
+}
+
+class MD5: HashProtocol {
+    static let size = 16 // 128 / 8
+    let message: [UInt8]
+
+    init(_ message: [UInt8]) {
+        self.message = message
+    }
+
+    /** specifies the per-round shift amounts */
+    private let shifts: [UInt32] = [
+        7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
+        5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
+        4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
+        6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21,
+        ]
+
+    /** binary integer part of the sines of integers (Radians) */
+    private let sines: [UInt32] = [
+        0xD76A_A478, 0xE8C7_B756, 0x2420_70DB, 0xC1BD_CEEE,
+        0xF57C_0FAF, 0x4787_C62A, 0xA830_4613, 0xFD46_9501,
+        0x6980_98D8, 0x8B44_F7AF, 0xFFFF_5BB1, 0x895C_D7BE,
+        0x6B90_1122, 0xFD98_7193, 0xA679_438E, 0x49B4_0821,
+        0xF61E_2562, 0xC040_B340, 0x265E_5A51, 0xE9B6_C7AA,
+        0xD62F_105D, 0x0244_1453, 0xD8A1_E681, 0xE7D3_FBC8,
+        0x21E1_CDE6, 0xC337_07D6, 0xF4D5_0D87, 0x455A_14ED,
+        0xA9E3_E905, 0xFCEF_A3F8, 0x676F_02D9, 0x8D2A_4C8A,
+        0xFFFA_3942, 0x8771_F681, 0x6D9D_6122, 0xFDE5_380C,
+        0xA4BE_EA44, 0x4BDE_CFA9, 0xF6BB_4B60, 0xBEBF_BC70,
+        0x289B_7EC6, 0xEAA1_27FA, 0xD4EF_3085, 0x4881D05,
+        0xD9D4_D039, 0xE6DB_99E5, 0x1FA2_7CF8, 0xC4AC_5665,
+        0xF429_2244, 0x432A_FF97, 0xAB94_23A7, 0xFC93_A039,
+        0x655B_59C3, 0x8F0C_CC92, 0xFFEF_F47D, 0x8584_5DD1,
+        0x6FA8_7E4F, 0xFE2C_E6E0, 0xA301_4314, 0x4E08_11A1,
+        0xF753_7E82, 0xBD3A_F235, 0x2AD7_D2BB, 0xEB86_D391,
+        ]
+
+    private let hashes: [UInt32] = [0x6745_2301, 0xEFCD_AB89, 0x98BA_DCFE, 0x1032_5476]
+
+    func calculate() -> [UInt8] {
+        var tmpMessage = prepare(64)
+        tmpMessage.reserveCapacity(tmpMessage.count + 4)
+
+        // hash values
+        var hh = hashes
+
+        // Step 2. Append Length a 64-bit representation of lengthInBits
+        let lengthInBits = (message.count * 8)
+        let lengthBytes = lengthInBits.bytes(64 / 8)
+        tmpMessage += lengthBytes.reversed()
+
+        // Process the message in successive 512-bit chunks:
+        let chunkSizeBytes = 512 / 8 // 64
+
+        for chunk in BytesSequence(chunkSize: chunkSizeBytes, data: tmpMessage) {
+            // break chunk into sixteen 32-bit words M[j], 0 ≤ j ≤ 15
+            var M = toUInt32Array(chunk)
+            assert(M.count == 16, "Invalid array")
+
+            // Initialize hash value for this chunk:
+            var A: UInt32 = hh[0]
+            var B: UInt32 = hh[1]
+            var C: UInt32 = hh[2]
+            var D: UInt32 = hh[3]
+
+            var dTemp: UInt32 = 0
+
+            // Main loop
+            for j in 0 ..< sines.count {
+                var g = 0
+                var F: UInt32 = 0
+
+                switch j {
+                case 0 ... 15:
+                    F = (B & C) | ((~B) & D)
+                    g = j
+                    break
+                case 16 ... 31:
+                    F = (D & B) | (~D & C)
+                    g = (5 * j + 1) % 16
+                    break
+                case 32 ... 47:
+                    F = B ^ C ^ D
+                    g = (3 * j + 5) % 16
+                    break
+                case 48 ... 63:
+                    F = C ^ (B | (~D))
+                    g = (7 * j) % 16
+                    break
+                default:
+                    break
+                }
+                dTemp = D
+                D = C
+                C = B
+                B = B &+ rotateLeft((A &+ F &+ sines[j] &+ M[g]), bits: shifts[j])
+                A = dTemp
+            }
+
+            hh[0] = hh[0] &+ A
+            hh[1] = hh[1] &+ B
+            hh[2] = hh[2] &+ C
+            hh[3] = hh[3] &+ D
+        }
+
+        var result = [UInt8]()
+        result.reserveCapacity(hh.count / 4)
+
+        hh.forEach {
+            let itemLE = $0.littleEndian
+            let r1 = UInt8(itemLE & 0xFF)
+            let r2 = UInt8((itemLE >> 8) & 0xFF)
+            let r3 = UInt8((itemLE >> 16) & 0xFF)
+            let r4 = UInt8((itemLE >> 24) & 0xFF)
+            result += [r1, r2, r3, r4]
+        }
+        return result
+    }
+}
+
+// swiftlint:enable all
@@ -0,0 +1,40 @@
+import Foundation
+import JSONUtilities
+import PathKit
+import ProjectSpec
+import xcodeproj
+import Yams
+
+public class SpecLoader {
+
+    var project: Project!
+    private var projectDictionary: [String: Any]?
+    let version: Version
+    let cacheFilePath: Path?
+
+    public init(version: Version, cacheFilePath: Path? = nil) {
+        self.version = version
+        self.cacheFilePath = cacheFilePath
+    }
+
+    public func loadProject(path: Path) throws -> Project {
+        let dictionary = try Project.loadDictionary(path: path)
+        let project = try Project(basePath: path.parent(), jsonDictionary: dictionary)
+
+        self.project = project
+        self.projectDictionary = dictionary
+
+        return project
+    }
+
+    public func generateCacheFile() throws -> CacheFile? {
+        guard let projectDictionary = projectDictionary,
+            let project = project else {
+                return nil
+        }
+        return try CacheFile(version: version,
+                              projectDictionary: projectDictionary,
+                              project: project)
+    }
+
+}