Setting tag plcapi-5.4-2

[plcapi.git] / plcsh

diff --git a/plcsh b/plcsh
index 10944b0..7bc3abe 100755 (executable)
--- a/plcsh
+++ b/plcsh
@@ -5,8 +5,6 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2005 The Trustees of Princeton University
 #
-# $Id$
-#
 
 import os
 import sys
@@ -18,7 +16,13 @@ from traceback import print_exc
 sys.path.append(os.path.dirname(os.path.realpath(sys.argv[0])))
 from PLC.Shell import Shell
 
-parser = OptionParser(add_help_option = False)
+usage="""Usage: %prog [options]
+   runs an interactive shell
+Usage: %prog [options] script script-arguments
+Usage: %prog script [plcsh-options --] script arguments
+   run a script"""
+
+parser = OptionParser(usage=usage,add_help_option = False)
 parser.add_option("-f", "--config", help = "PLC configuration file")
 parser.add_option("-h", "--url", help = "API URL")
 parser.add_option("-c", "--cacert", help = "API SSL certificate")
@@ -29,9 +33,15 @@ parser.add_option("-u", "--user", help = "API user name")
 parser.add_option("-p", "--password", help = "API password")
 parser.add_option("-r", "--role", help = "API role")
 parser.add_option("-x", "--xmlrpc", action = "store_true", default = False, help = "Use XML-RPC interface")
-parser.add_option("--help", action = "help", help = "show this help message and exit")
+# pass this to the invoked shell if any
+parser.add_option("--help", action = "store_true", dest="help", default=False,
+                  help = "show this help message and exit")
 (options, args) = parser.parse_args()
 
+if not args and options.help:
+    parser.print_help()
+    sys.exit(1)    
+
 # If user is specified but password is not
 if options.user is not None and options.password is None:
     try:
@@ -59,11 +69,23 @@ except Exception, err:
     parser.print_help()
     sys.exit(1)
 
-# If called by a script
-if len(sys.argv) > 1 and os.path.exists(sys.argv[1]):
-    # Pop us off the argument stack
-    sys.argv.pop(0)
-    execfile(sys.argv[0])
+# If called by a script 
+if args:
+    if not os.path.exists(args[0]):
+        print 'File %s not found'%args[0]
+        parser.print_help()
+        sys.exit(1)
+    else:
+        # re-append --help if provided
+        if options.help:
+            args.append('--help')
+        # use args as sys.argv for the next shell, so our own options get removed for the next script
+        sys.argv = args
+        script = sys.argv[0]
+        # Add of script to sys.path 
+        path = os.path.dirname(os.path.abspath(script))
+        sys.path.append(path)
+        execfile(script)
 
 # Otherwise, run an interactive shell environment
 else: