From 3838216c484aa9dad68fa55a4b7399182f9c1417 Mon Sep 17 00:00:00 2001
From: Fabian Fett <fabianfett@mac.com>
Date: Sat, 21 Mar 2020 14:58:22 +0100
Subject: [PATCH] Created cli tool `JSONTestSuiteCLI`

---
 Package.resolved                    | 25 ++++++++++++++++++
 Package.swift                       | 11 +++++++-
 Sources/JSONTestSuiteCLI/main.swift | 39 +++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 Package.resolved
 create mode 100644 Sources/JSONTestSuiteCLI/main.swift

diff --git a/Package.resolved b/Package.resolved
new file mode 100644
index 0000000..612a145
--- /dev/null
+++ b/Package.resolved
@@ -0,0 +1,25 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "swift-argument-parser",
+        "repositoryURL": "https://github.com/apple/swift-argument-parser.git",
+        "state": {
+          "branch": null,
+          "revision": "35b76bf577d3cc74820f8991894ce3bcdf024ddc",
+          "version": "0.0.2"
+        }
+      },
+      {
+        "package": "swift-nio",
+        "repositoryURL": "https://github.com/apple/swift-nio",
+        "state": {
+          "branch": null,
+          "revision": "a27a07719ca785bcaca019a5b9fe1814b981b4a2",
+          "version": "2.15.0"
+        }
+      }
+    ]
+  },
+  "version": 1
+}
diff --git a/Package.swift b/Package.swift
index ec0bb82..b7bab68 100644
--- a/Package.swift
+++ b/Package.swift
@@ -14,9 +14,18 @@ var package = Package(
       targets: ["PureSwiftJSONParsing"]),
   ],
   dependencies: [
-
+    // these are only used for testing
+    .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMajor(from: "0.0.1")),
+    .package(url: "https://github.com/apple/swift-nio", .upToNextMajor(from: "2.13.0"))
   ],
   targets: [
+    .target(
+      name: "JSONTestSuiteCLI",
+      dependencies: [
+        .product(name: "ArgumentParser", package: "swift-argument-parser"),
+        .product(name: "NIO", package: "swift-nio"),
+      ]
+    ),
     .target(
       name: "PureSwiftJSONCoding",
       dependencies: ["PureSwiftJSONParsing"]),
diff --git a/Sources/JSONTestSuiteCLI/main.swift b/Sources/JSONTestSuiteCLI/main.swift
new file mode 100644
index 0000000..93db471
--- /dev/null
+++ b/Sources/JSONTestSuiteCLI/main.swift
@@ -0,0 +1,39 @@
+import ArgumentParser
+import NIO
+
+struct JSONTestSuiteCLI: ParsableCommand {
+  
+  @Argument(help: "the json file to parse") var jsonFile: String
+  
+  func run() throws {
+    // here lives the logic
+    
+    let bytes = try self.read(file: jsonFile)
+
+    
+  }
+  
+  func read(file: String) throws -> [UInt8] {
+    
+    let group = MultiThreadedEventLoopGroup(numberOfThreads: 1)
+    defer {
+        try! group.syncShutdownGracefully()
+    }
+    let loop = group.next()
+    let threadPool = NIOThreadPool(numberOfThreads: 1)
+    threadPool.start()
+    defer {
+        try! threadPool.syncShutdownGracefully()
+    }
+    let fileIO = NonBlockingFileIO(threadPool: threadPool)
+    
+    let (handle, region) = try fileIO.openFile(path: file, eventLoop: loop).wait()
+    let allocator = ByteBufferAllocator()
+    var buffer = try fileIO.read(fileRegion: region, allocator: allocator, eventLoop: loop).wait()
+
+    return buffer.readBytes(length: buffer.readableBytes)!
+  }
+  
+}
+
+JSONTestSuiteCLI.main()