Added ipapi, the extension api for ipython.

Fixed oinspect for obj.__doc__ == None (magics)

IPython/ipapi.py

@@ -0,0 +1,78 b''
+''' IPython customization API
+
+Your one-stop module for configuring ipython
+
+This is experimental, use at your own risk.
+
+All names prefixed by underscores are for internal use, not part 
+of the public api.
+
+No formal doc yet, here's an example that you can just put 
+to a module and import from ipython.
+
+-----------------------------------------------
+import IPython.ipapi as ip
+
+def ankka_f(self, arg):
+    print "Ankka",self,"says uppercase:",arg.upper()
+
+ip.expose_magic("ankka",ankka_f)
+
+ip.magic('alias sayhi echo "Testing, hi ok"')
+ip.magic('alias helloworld echo "Hello world"')
+ip.system('pwd')
+
+ip.ex('import re')
+ip.ex("""
+def funcci(a,b):
+    print a+b
+print funcci(3,4)
+""")
+ip.ex("funcci(348,9)")
+
+def jed_editor(self,filename, linenum=None):
+    print "Calling my own editor, jed ... via hook!"
+    import os
+    if linenum is None: linenum = 0
+    os.system('jed +%d %s' % (linenum, filename))
+    print "exiting jed"
+
+ip.set_hook('editor',jed_editor)
+print "done!"
+    
+'''
+ 
+  
+ 
+ 
+def _init_with_shell(ip):
+    global magic
+    magic = ip.ipmagic
+    global system
+    system = ip.ipsystem
+    global set_hook
+    set_hook = ip.set_hook
+    global __IP
+    __IP = ip
+
+def user_ns():
+    return __IP.user_ns
+
+def expose_magic(magicname, func):
+    ''' Expose own function as magic function for ipython 
+
+    def foo_impl(self,parameter_s=''):
+        """My very own magic!. (Use docstrings, IPython reads them)."""
+        print 'Magic function. Passed parameter is between < >: <'+parameter_s+'>'
+        print 'The self object is:',self
+
+    ipapi.expose_magic("foo",foo_impl)
+    '''
+    
+    from IPython import Magic
+    
+    setattr(Magic.Magic, "magic_" + magicname, func)
+    
+def ex(cmd):
+    """ Execute a normal python statement """
+    exec cmd in user_ns()
  No newline at end of file

IPython/OInspect.py

@@ -6,7 +6,7 b' Uses syntax highlighting for presenting the various information elements.'
 Similar in spirit to the inspect module, but all calls take a name argument to
 reference the name under which an object is being read.
 
-$Id: OInspect.py 958 2005-12-27 23:17:51Z fperez $
+$Id: OInspect.py 1016 2006-01-14 00:54:23Z vivainio $
 """
 
 #*****************************************************************************
@@ -268,6 +268,8 b' class Inspector:'
             ds = "Alias to the system command:\n  %s" % obj[1]
         else:
             ds = getdoc(obj)
+            if ds is None:
+                ds = '<no docstring>'
         if formatter is not None:
             ds = formatter(ds)
 

IPython/__init__.py

@@ -27,7 +27,7 b' IPython tries to:'
 
 IPython requires Python 2.2 or newer.
 
-$Id: __init__.py 1014 2006-01-13 19:16:41Z vivainio $"""
+$Id: __init__.py 1016 2006-01-14 00:54:23Z vivainio $"""
 
 #*****************************************************************************
 #       Copyright (C) 2001-2004 Fernando Perez. <[e-mail]>
@@ -44,7 +44,8 b" if sys.version[0:3] < '2.3':"
 # Define what gets imported with a 'from IPython import *'
 __all__ = ['deep_reload','genutils','ipstruct','ultraTB','DPyGetOpt',
            'Itpl','hooks','ConfigLoader','OutputTrap','Release','Shell',
-           'platutils','platutils_win32','platutils_posix','platutils_dummy']
+           'platutils','platutils_win32','platutils_posix','platutils_dummy',
+           'ipapi']
 
 # Load __all__ in IPython namespace so that a simple 'import IPython' gives
 # access to them via IPython.<name>

IPython/iplib.py

@@ -2,11 +2,11 b''
 """
 IPython -- An enhanced Interactive Python
 
-Requires Python 2.1 or newer.
+Requires Python 2.3 or newer.
 
 This file contains all the classes and helper functions specific to IPython.
 
-$Id: iplib.py 1015 2006-01-13 22:47:06Z vivainio $
+$Id: iplib.py 1016 2006-01-14 00:54:23Z vivainio $
 """
 
 #*****************************************************************************
@@ -74,6 +74,7 b' from IPython.ipstruct import Struct'
 from IPython.background_jobs import BackgroundJobManager
 from IPython.usage import cmd_line_usage,interactive_usage
 from IPython.genutils import *
+import IPython.ipapi
 
 # Globals
 
@@ -190,6 +191,10 b' class InteractiveShell(object,Magic):'
                  user_ns = None,user_global_ns=None,banner2='',
                  custom_exceptions=((),None),embedded=False):
 
+        # first thing: introduce ourselves to IPython.ipapi which is uncallable
+        # before it knows an InteractiveShell object. Uninitialized state is ok
+        IPython.ipapi._init_with_shell(self)
+        
         # some minimal strict typechecks.  For some core data structures, I
         # want actual basic python types, not just anything that looks like
         # one.  This is especially true for namespaces.
@@ -821,8 +826,8 b' class InteractiveShell(object,Magic):'
 
         args = arg_s.split(' ',1)
         magic_name = args[0]
-        if magic_name.startswith(self.ESC_MAGIC):
-            magic_name = magic_name[1:]
+        magic_name = magic_name.lstrip(self.ESC_MAGIC)
+
         try:
             magic_args = args[1]
         except IndexError:

doc/ChangeLog

@@ -12,6 +12,10 b''
 	shell escape; not a known bug but had potential to be one in the
 	future.
 
+	* IPython/ipapi.py (added),OInspect.py,iplib.py: "Public" 
+	extension API for IPython! See the module for usage example. Fix 
+	OInspect for docstring-less magic functions.
+	
 
 2006-01-13  Fernando Perez  <[e-mail]>