Adding support for Swift Package Manager

- moved public headers to `include/`
- added `Package.swift` matching configuration specified in `SSZipArchive.podspec`
- updated original project to reflect new folder structure
- updated `SSZipArchive.podspec` to reflect new folder structure
- added `.build/` to the ignore list
- removed eXecute permission flag from source files

.gitignore

@@ -21,3 +21,6 @@ Pods/
 # Add this line if you want to avoid checking in source code from Carthage dependencies.
 **/Carthage/Checkouts
 **/Carthage/Build
+
+# Swift Package Manager
+.build/

Package.swift

@@ -0,0 +1,35 @@
+// swift-tools-version:5.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "ZipArchive",
+    platforms: [
+        .iOS(.v9),
+        .tvOS(.v9),
+        .macOS(.v10_10),
+        .watchOS(.v2),
+    ],
+    products: [
+        .library(name: "ZipArchive", targets: ["ZipArchive"]),
+    ],
+    targets: [
+        .target(
+            name: "ZipArchive",
+            path: "SSZipArchive",
+            cSettings: [
+                .define("HAVE_INTTYPES_H"),
+                .define("HAVE_PKCRYPT"),
+                .define("HAVE_STDINT_H"),
+                .define("HAVE_WZAES"),
+                .define("HAVE_ZLIB"),
+            ],
+            linkerSettings: [
+                .linkedLibrary("z"),
+                .linkedLibrary("iconv"),
+                .linkedFramework("Security"),
+            ]
+        )
+    ]
+)

SSZipArchive.podspec

@@ -11,8 +11,8 @@ Pod::Spec.new do |s|
   s.tvos.deployment_target = '9.0'
   s.osx.deployment_target = '10.8'
   s.watchos.deployment_target = '2.0'
-  s.source_files = 'SSZipArchive/*.{m,h}', 'SSZipArchive/minizip/*.{c,h}'
-  s.public_header_files = 'SSZipArchive/*.h'
+  s.source_files = 'SSZipArchive/*.{m,h}', 'SSZipArchive/include/*.{m,h}', 'SSZipArchive/minizip/*.{c,h}'
+  s.public_header_files = 'SSZipArchive/include/*.h'
   s.libraries = 'z', 'iconv'
   s.framework = 'Security'
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES',

SSZipArchive/minizip/mz_compat.h

@@ -15,7 +15,7 @@
 #define MZ_COMPAT_H
 
 #include "mz.h"
-#include "../SSZipCommon.h"
+#include "../include/SSZipCommon.h"
 
 #ifdef __cplusplus
 extern "C" {

ZipArchive.xcodeproj/project.pbxproj

@@ -269,6 +269,16 @@
 			name = Frameworks;
 			sourceTree = "<group>";
 		};
+		579FC27523292ABA007FEA3C /* include */ = {
+			isa = PBXGroup;
+			children = (
+				B423AE481C0DF7950004A2F1 /* SSZipArchive.h */,
+				93CE5D5D227FE5C50003464F /* SSZipCommon.h */,
+				B423AE4A1C0DF7950004A2F1 /* ZipArchive.h */,
+			);
+			path = include;
+			sourceTree = "<group>";
+		};
 		B423AE101C0DF76A0004A2F1 = {
 			isa = PBXGroup;
 			children = (
@@ -293,11 +303,9 @@
 			isa = PBXGroup;
 			children = (
 				B423AE3D1C0DF7950004A2F1 /* Info.plist */,
+				579FC27523292ABA007FEA3C /* include */,
 				B423AE3E1C0DF7950004A2F1 /* minizip */,
-				B423AE481C0DF7950004A2F1 /* SSZipArchive.h */,
 				B423AE491C0DF7950004A2F1 /* SSZipArchive.m */,
-				93CE5D5D227FE5C50003464F /* SSZipCommon.h */,
-				B423AE4A1C0DF7950004A2F1 /* ZipArchive.h */,
 			);
 			path = SSZipArchive;
 			sourceTree = "<group>";