v0.16.0 import PGN, delete games, two-layout web client

internal/client/command/import_native.go

@@ -0,0 +1,26 @@
+//go:build !js && !wasm
+
+package command
+
+import (
+	"fmt"
+	"os"
+)
+
+const maxImportFile = 64 << 10
+
+// readImportFile reads a PGN file for import.
+func readImportFile(path string) (string, error) {
+	info, err := os.Stat(path)
+	if err != nil {
+		return "", err
+	}
+	if info.Size() > maxImportFile {
+		return "", fmt.Errorf("%s is larger than %d bytes", path, maxImportFile)
+	}
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}