python: Clean up and modernize examples.

* lang/python/examples/Examples.rst: Delete file.
* lang/python/examples/t-edit.py: Likewise.  This is actually a test
case and has been moved to 'tests'.
* lang/python/examples/assuan.py: New file.
* lang/python/examples/decryption-filter.py: Likewise.
* lang/python/examples/delkey.py: Modernize.
* lang/python/examples/encrypt-to-all.py: Likewise.
* lang/python/examples/exportimport.py: Likewise.
* lang/python/examples/genkey.py: Likewise.
* lang/python/examples/inter-edit.py: Likewise.
* lang/python/examples/sign.py: Likewise.
* lang/python/examples/signverify.py: Likewise.
* lang/python/examples/simple.py: Likewise.
* lang/python/examples/testCMSgetkey.py: Likewise.
* lang/python/examples/verifydetails.py: Likewise.

Signed-off-by: Justus Winter <[email protected]>

1 files changed, 49 insertions, 47 deletions

diff --git a/lang/python/examples/inter-edit.py b/lang/python/examples/inter-edit.py
index dcb47c25..8199cc63 100644
--- a/lang/python/examples/inter-edit.py
+++ b/lang/python/examples/inter-edit.py
@@ -1,58 +1,60 @@
 #!/usr/bin/env python3
+#
+# Copyright (C) 2016 g10 Code GmbH
 # Copyright (C) 2005 Igor Belyi <[email protected]>
 #
-#    This program 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 2 of the License, or
-#    (at your option) any later version.
+# This program 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 2 of the License, or
+# (at your option) any later version.
 #
-#    This program 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.
+# This program 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 this program; if not, write to the Free Software
-#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-#    02111-1307 USA
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
 
-import sys
-from pyme import core
-from pyme.core import Data, Context
-from pyme.constants import status
+"""Simple interactive editor to test editor scripts"""
 
-core.check_version(None)
+import sys
+import pyme
+import pyme.constants.status
 
 # Get names for the status codes
-stat2str = {}
-for name in dir(status):
+status2str = {}
+for name in dir(pyme.constants.status):
     if not name.startswith('__') and name != "util":
-        stat2str[getattr(status, name)] = name
-
-
-# Print the output received since the last prompt before giving the new prompt
-def edit_fnc(stat, args, helper):
-    global stat_strings
-    try:
-        while True:
-            helper["data"].seek(helper["skip"], 0)
-            data = helper["data"].read()
-            helper["skip"] += len(data)
-            sys.stdout.buffer.write(data)
-            return input("(%s) %s > " % (stat2str[stat], args))
-    except EOFError:
-        pass
-
-# Simple interactive editor to test editor scripts
+        status2str[getattr(pyme.constants.status, name)] = name
+
 if len(sys.argv) != 2:
-    sys.stderr.write("Usage: %s <Gpg key pattern>\n" % sys.argv[0])
-else:
-    c = Context()
-    out = Data()
-    c.op_keylist_start(sys.argv[1], 0)
-    key = c.op_keylist_next()
-    helper = {"skip": 0, "data": out}
-    c.op_edit(key, edit_fnc, helper, out)
-    print("[-- Final output --]")
-    out.seek(helper["skip"], 0)
-    sys.stdout.buffer.write(out.read())
+    sys.exit("Usage: %s <Gpg key pattern>\n" % sys.argv[0])
+
+name = sys.argv[1]
+
+with pyme.Context() as c:
+    keys = list(c.keylist(name))
+    if len(keys) == 0:
+        sys.exit("No key matching {}.".format(name))
+    if len(keys) > 1:
+        sys.exit("More than one key matching {}.".format(name))
+
+    key = keys[0]
+    print("Editing key {} ({}):".format(key.uids[0].uid, key.subkeys[0].fpr))
+
+    def edit_fnc(status, args):
+        print("Status: {} ({}), args: {} > ".format(
+            status2str[status], status, args), end='', flush=True)
+
+        if not 'GET' in status2str[status]:
+            # no prompt
+            print()
+            return None
+
+        try:
+            return input()
+        except EOFError:
+            return "quit"
+
+    c.op_edit(key, edit_fnc, None, sys.stdout)