add template

template/source/day.swift

@@ -0,0 +1,95 @@
+#if !hasFeature(Embedded)
+import Foundation
+#endif
+
+@main
+struct Day {
+    static func run() {
+        guard let input = testInput else {
+            print("input sttring nil")
+            return
+        }
+        print("Parsing...")
+        let parsed = parseInput(input)
+        print("Running Part 1...")
+        part1(parsed)
+        print("Running Part 2...")
+        part2(parsed)
+        print("Finished!")
+    }
+
+    typealias ParsedInput = String
+
+    static func parseInput(_ input: String) -> ParsedInput {
+        return input
+    }
+
+    static func part1(_ input: ParsedInput) {
+    }
+
+    static func part2(_ input: ParsedInput) {
+    }
+
+    #if hasFeature(Embedded)
+    static func main() {
+        gfxInitDefault()
+        consoleInit(GFX_TOP, nil)
+
+        guard romfsInit() == 0 else {
+            print("Couldn't init RomFS")
+            return
+        }
+
+        testInput = stringFromFile("romfs:/test.txt")
+        realInput = stringFromFile("romfs:/input.txt")
+
+        run()
+
+        while aptMainLoop() {
+            hidScanInput()
+            let kDown = hidKeysDown()
+            if kDown & KEY_START != 0 {
+                break
+            }
+
+            gfxFlushBuffers()
+            gfxSwapBuffers()
+        }
+
+        romfsExit()
+        gfxExit()
+    }
+
+    static func stringFromFile(_ path: String) -> String? {
+        let file = fopen(path, "r")
+        var ret = ""
+        var buf = [CChar](repeating: 0, count: 100)
+        while fgets(&buf, 100, file) != nil {
+           ret += String(cString: buf)
+        }
+        guard feof(file) != 0 else {
+            print("Error reading file \(path)")
+            return nil
+        }
+        while ret.first?.isNewline ?? false {
+            ret.removeFirst()
+        }
+        while ret.last?.isNewline ?? false {
+            ret.removeLast()
+        }
+        return ret
+    }
+    #else
+    static func main() {
+        testInput = try? String(contentsOfFile: "romfs/test.txt").trimmingCharacters(in: .whitespacesAndNewlines)
+        realInput = try? String(contentsOfFile: "romfs/input.txt").trimmingCharacters(in: .whitespacesAndNewlines)
+
+        run()
+    }
+    #endif
+
+}
+
+var testInput: String? = nil
+
+var realInput: String? = nil