mmgen-xmrwallet txview: add autosign support

mmgen/help/xmrwallet.py

@@ -137,7 +137,8 @@ JSON and thus suitable for efficient incremental backup using git.
                           ‘TXVIEW’ OPERATION NOTES
 
 Transactions are displayed in chronological order based on submit time or
-creation time.
+creation time.  With --autosign, submitted transactions on the removable
+device are displayed.
 
 
                               SECURITY WARNING

mmgen/main_xmrwallet.py

@@ -49,7 +49,7 @@ opts_data = {
 			'[opts] sweep    [xmr_keyaddrfile] SWEEP_SPEC',
 			'[opts] submit   [TX_file]',
 			'[opts] relay    <TX_file>',
-			'[opts] txview   <TX_file> ...',
+			'[opts] txview   [TX_file] ...',
 			'[opts] export-outputs    [wallets]',
 			'[opts] import-key-images [wallets]',
 		],
@@ -113,7 +113,7 @@ cmd_args = cfg._args
 if cmd_args and cfg.autosign and (
 		cmd_args[0] in (
 			MoneroWalletOps.kafile_arg_ops
-			+ ('export-outputs','import-key-images')
+			+ ('export-outputs','import-key-images','txview')
 		)
 		or len(cmd_args) == 1 and cmd_args[0] == 'submit'
 	):
@@ -171,5 +171,5 @@ try:
 except Exception as e:
 	ymsg(f'Unable to stop wallet daemon: {type(e).__name__}: {e}')
 
-if cfg.autosign and not cfg.test_suite:
+if m.do_umount and cfg.autosign and not cfg.test_suite:
 	asi.do_umount()

mmgen/xmrwallet.py

@@ -616,6 +616,7 @@ class MoneroWalletOps:
 
 		opts = ('wallet_dir',)
 		trust_daemon = False
+		do_umount = True
 
 		def __init__(self,cfg,uarg_tuple):
 
@@ -1812,12 +1813,21 @@ class MoneroWalletOps:
 				die(1,'Exiting at user request')
 
 	class txview(base):
+		opts = ('watch_only','autosign')
+		do_umount = False
 
 		async def main(self):
+			if self.cfg.autosign:
+				asi = get_autosign_obj(self.cfg,'xmr')
+				files = [f for f in asi.xmr_tx_dir.iterdir() if f.name.endswith('.'+MoneroMMGenTX.Submitted.ext)]
+			else:
+				files = uarg.infile
 			txs = sorted(
-				(MoneroMMGenTX.View( self.cfg, Path(fn) ) for fn in uarg.infile),
+				(MoneroMMGenTX.View( self.cfg, Path(fn) ) for fn in files),
 					key = lambda x: x.data.create_time
 			)
+			if self.cfg.autosign:
+				asi.do_umount()
 			self.cfg._util.stdout_or_pager(
 				'\n'.join(tx.get_info() for tx in txs)
 			)