cpp: Add information about revocation keys to Keyikloecker/t7118-revkeys

* lang/cpp/src/gpgmefw.h (gpgme_revocation_key_t): New forward
declaration.
* lang/cpp/src/key.cpp, lang/cpp/src/key.h (class Key): New methods
revocationKey, numRevocationKeys, revocationKeys.
(class RevocationKey): New.
(swap): New overload for RevocationKey.
(operator<<): New overload for RevocationKey.
* lang/cpp/src/key.cpp (operator<<): Add information about revocation
keys to the output stream for Key.

* lang/cpp/tests/run-keylist.cpp (main): Don't output Key if nextKey
failed, e.g. at the end of the key listing.
--

GnuPG-bug-id: 7118

1 files changed, 4 insertions, 1 deletions

diff --git a/lang/cpp/tests/run-keylist.cpp b/lang/cpp/tests/run-keylist.cpp
index 9e7d763c..b46a815a 100644
--- a/lang/cpp/tests/run-keylist.cpp
+++ b/lang/cpp/tests/run-keylist.cpp
@@ -160,7 +160,10 @@ main (int argc, char **argv)
     std::stringstream ss;
     do {
         key = ctx->nextKey(err);
-        ss << key << "\n\n";
+        if (!err)
+        {
+            ss << key << "\n\n";
+        }
     } while (!err && !key.isNull());
 
     std::cout << ss.str();