Launcher, app/base, sentry, update service

internal/versioner/util.go

@@ -0,0 +1,43 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package versioner
+
+import (
+	"os"
+	"runtime"
+)
+
+// fileExists returns whether the given file exists.
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil
+}
+
+// fileIsExecutable returns the given filepath and true if it exists.
+func fileIsExecutable(path string) bool {
+	if runtime.GOOS == "windows" {
+		return true
+	}
+
+	info, err := os.Stat(path)
+	if err != nil {
+		return false
+	}
+
+	return info.Mode()&0111 != 0
+}