qt: Allow checking if the sign/encrypt archive jobs are supported

* lang/qt/src/encryptarchivejob.cpp, lang/qt/src/encryptarchivejob.h
(isSupported): New.
* lang/qt/src/signarchivejob.cpp, lang/qt/src/signarchivejob.h
(isSupported): New.
* lang/qt/src/signencryptarchivejob.cpp,
lang/qt/src/signencryptarchivejob.h (isSupported): New.

* lang/qt/tests/run-encryptarchivejob.cpp (main),
lang/qt/tests/run-signarchivejob.cpp (main): Check if jobs are
supported.
--

GnuPG-bug-id: 6342

1 files changed, 9 insertions, 0 deletions

diff --git a/lang/qt/src/encryptarchivejob.cpp b/lang/qt/src/encryptarchivejob.cpp
index 5c5533be..a99de13f 100644
--- a/lang/qt/src/encryptarchivejob.cpp
+++ b/lang/qt/src/encryptarchivejob.cpp
@@ -38,6 +38,8 @@
 #include "encryptarchivejob.h"
 #include "encryptarchivejob_p.h"
 
+#include <engineinfo.h>
+
 using namespace QGpgME;
 
 EncryptArchiveJob::EncryptArchiveJob(QObject *parent)
@@ -47,6 +49,13 @@ EncryptArchiveJob::EncryptArchiveJob(QObject *parent)
 
 EncryptArchiveJob::~EncryptArchiveJob() = default;
 
+// static
+bool EncryptArchiveJob::isSupported()
+{
+    static const auto gpgVersion = GpgME::engineInfo(GpgME::GpgEngine).engineVersion();
+    return (gpgVersion >= "2.4.1") || (gpgVersion >= "2.2.42" && gpgVersion < "2.3.0");
+}
+
 void EncryptArchiveJob::setBaseDirectory(const QString &baseDirectory)
 {
     auto d = jobPrivate<EncryptArchiveJobPrivate>(this);