# HG changeset patch
# User Jeff Hammel <k0scist@gmail.com>
# Date 1491064129 25200
# Node ID b440206930ac1a33b1eb6255360cc83fd1b119d3
# Parent  5f1e1ac96aa7b94e30f7d2c98f2db1dd39106eaa
stub table optional positional argument

diff -r 5f1e1ac96aa7 -r b440206930ac sqlex/main.py
--- a/sqlex/main.py	Sat Apr 01 09:19:22 2017 -0700
+++ b/sqlex/main.py	Sat Apr 01 09:28:49 2017 -0700
@@ -31,6 +31,8 @@
         argparse.ArgumentParser.__init__(self, **kwargs)
         self.add_argument('db',
                           help="sqlite `.db` file")
+        self.add_argument('table', nargs='?',
+                          help="table to operate on")
         self.add_argument('--tables', '--list-tables', dest='list_tables',
                           action='store_true', default=False,
                           help="list tables and exit")
@@ -62,9 +64,15 @@
     db = SQLEx(options.db)
 
     if options.list_tables:
+        # list tables and return
+        # if `table` argument is provided, exit 1
+        # if not available.  Otherwise exit 0
         tables = db.tables()
         print ('\n'.join(tables))
-        return
+        retval = 0
+        if options.table:
+            retval = int(options.table not in tables)
+        return retval
 
 if __name__ == '__main__':
     main()