From c8cbed4aaa58ef99ac240deb7a66a49369d0420e Mon Sep 17 00:00:00 2001
From: Leonardo Robol <leo@robol.it>
Date: Sun, 2 Oct 2011 15:48:28 +0200
Subject: [PATCH] Added help text

---
 bundle.py | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/bundle.py b/bundle.py
index 8a6bd46..70cc094 100755
--- a/bundle.py
+++ b/bundle.py
@@ -41,7 +41,7 @@ class Bundle():
 
         # Create packing information
         package_info = {
-            'name': self._appname,
+            'appname': self._appname,
             'appcmd': self._appcmd,
             'appdir': os.path.basename (self._appdir),
             }
@@ -87,6 +87,11 @@ class Bundle():
             handle.write (file_content.decode ("utf-8"))
         return self._bundle_path
 
+    def tar_filter (self, tarinfo):
+        """Check if a file has to be packed or not, 
+        and skips files such as version control logs
+        and source files"""
+        pass
 
     def unbundle_app (self):
         """Unbundle app assuming that it is contained in this file"""
@@ -108,6 +113,7 @@ class Bundle():
         tar.close ()
 
         package_info = json.load (open ("info.bundle", "r"))
+        print_msg ("Launching %s" % package_info["appname"])
         os.chdir (package_info["appdir"])
 
         # Executing the program
@@ -120,8 +126,36 @@ class Bundle():
 def print_msg (msg):
     print ("\033[31;1m> \033[0m%s" % msg)
 
+def print_help ():
+    help_text = """
+Bundle.py v0.1 --- A simple framework to pack applications
+
+bundle.py is a simple python script that packs compiled application
+in a single autoextracting python file that can be executed and
+runs the application. 
+
+To pack your application, simply create an application.info file
+similar to this (JSON coded dictionary)
+
+{
+    "appname": "My beatiful application",
+    "appdir":  "/home/me/dev/my_app",
+    "appcmd":  "./src/my_app"
+}
+
+and then run ./bundle.py application.info
+"""
+    print (help_text)
+    sys.exit (0)
+
 if __name__ == "__main__":
 
+    # Check if this is the bundle.py source file
+    # and if it does not contain a bundle
+    with open (__file__, "r") as handle:
+        if len(sys.argv) <= 1 and not (15 * "#") in handle.read ():
+            print_help ()
+
     print_msg ("Starting bundle framework")
 
     if len (sys.argv) <= 1:
-- 
2.1.4