From b3e9ee1f5863cbe0d092f29e25cb4363d7398b64 Mon Sep 17 00:00:00 2001
From: Chris McDonough <chrism@agendaless.com>
Date: Mon, 19 Oct 2009 18:43:01 +0000
Subject: - ``paster bfgshell`` now supports IPython if it's available for  
 import.  Thanks to Daniel Holth for the initial patch.

---
 repoze/bfg/paster.py            | 31 ++++++++++++++++++++++-----
 repoze/bfg/tests/test_paster.py | 47 ++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 72 insertions(+), 6 deletions(-)

(limited to 'repoze')

diff --git a/repoze/bfg/paster.py b/repoze/bfg/paster.py
index c60d0b437..de5dc1f79 100644
--- a/repoze/bfg/paster.py
+++ b/repoze/bfg/paster.py
@@ -9,6 +9,12 @@ from paste.util.template import paste_script_template_renderer
 
 from repoze.bfg.scripting import get_root
 
+try:
+    from IPython.Shell import IPShellEmbed
+except ImportError:
+    IPShellEmbed = None
+
+
 class StarterProjectTemplate(Template):
     _template_dir = 'paster_templates/starter'
     summary = 'repoze.bfg starter project'
@@ -66,8 +72,14 @@ class BFGShellCommand(Command):
     group_name = 'bfg'
 
     parser = Command.standard_parser(simulate=True)
+    parser.add_option('-d', '--disable-ipython',
+                      action='store_true',
+                      dest='disable_ipython',
+                      help="Don't use IPython even if it is available")
+
     interact = (interact,) # for testing
     loadapp = (loadapp,) # for testing
+    IPShellEmbed = IPShellEmbed # for testing
     verbose = 3
 
     def command(self):
@@ -77,8 +89,17 @@ class BFGShellCommand(Command):
         config_file, section_name = self.args
         app = get_app(config_file, section_name, loadapp=self.loadapp[0])
         root, closer = get_root(app)
-        try:
-            self.interact[0](banner, local={'root':root})
-        finally:
-            closer()
-            
+        if self.IPShellEmbed is not None and not self.options.disable_ipython:
+            shell = self.IPShellEmbed(argv=self.args)
+            shell.set_banner(shell.IP.BANNER + '\n\n' + banner)
+            try:
+                shell(local_ns={'root':root}, global_ns={})
+            finally:
+                closer()
+        else:
+            try:
+                self.interact[0](banner, local={'root':root})
+            finally:
+                closer()
+
+                
diff --git a/repoze/bfg/tests/test_paster.py b/repoze/bfg/tests/test_paster.py
index 0119e3313..4650f04cd 100644
--- a/repoze/bfg/tests/test_paster.py
+++ b/repoze/bfg/tests/test_paster.py
@@ -8,14 +8,18 @@ class TestBFGShellCommand(unittest.TestCase):
     def _makeOne(self):
         return self._getTargetClass()('bfgshell')
 
-    def test_command(self):
+    def test_command_ipython_disabled(self):
         command = self._makeOne()
         interact = DummyInteractor()
         app = DummyApp()
         loadapp = DummyLoadApp(app)
         command.interact = (interact,)
         command.loadapp = (loadapp,)
+        command.IPShellEmbed = True # fake out
         command.args = ('/foo/bar/myapp.ini', 'myapp')
+        class Options(object): pass
+        command.options = Options()
+        command.options.disable_ipython =True
         command.command()
         self.assertEqual(loadapp.config_name, 'config:/foo/bar/myapp.ini')
         self.assertEqual(loadapp.section_name, 'myapp')
@@ -28,6 +32,31 @@ class TestBFGShellCommand(unittest.TestCase):
         self.failUnless(interact.banner)
         self.assertEqual(len(app.threadlocal_manager.popped), 1)
 
+    def test_command_ipython_enabled(self):
+        command = self._makeOne()
+        interact = DummyInteractor()
+        app = DummyApp()
+        loadapp = DummyLoadApp(app)
+        command.loadapp = (loadapp,)
+        dummy_shell_factory = DummyIPShellFactory()
+        command.IPShellEmbed = dummy_shell_factory
+        command.args = ('/foo/bar/myapp.ini', 'myapp')
+        class Options(object): pass
+        command.options = Options()
+        command.options.disable_ipython = False
+        command.command()
+        self.assertEqual(loadapp.config_name, 'config:/foo/bar/myapp.ini')
+        self.assertEqual(loadapp.section_name, 'myapp')
+        self.failUnless(loadapp.relative_to)
+        self.assertEqual(len(app.threadlocal_manager.pushed), 1)
+        pushed = app.threadlocal_manager.pushed[0]
+        self.assertEqual(pushed['registry'], dummy_registry)
+        self.assertEqual(pushed['request'], None)
+        self.assertEqual(dummy_shell_factory.shell.local_ns,{'root':dummy_root})
+        self.assertEqual(dummy_shell_factory.shell.global_ns, {})
+        self.failUnless(dummy_shell_factory.shell.banner)
+        self.assertEqual(len(app.threadlocal_manager.popped), 1)
+
 class TestGetApp(unittest.TestCase):
     def _callFUT(self, config_file, section_name, loadapp):
         from repoze.bfg.paster import get_app
@@ -46,6 +75,22 @@ class TestGetApp(unittest.TestCase):
 class Dummy:
     pass
 
+class DummyIPShellFactory(object):
+    def __call__(self, argv):
+        shell = DummyIPShell()
+        self.shell = shell
+        return shell
+
+class DummyIPShell(object):
+    IP = Dummy()
+    IP.BANNER = 'foo'
+    def set_banner(self, banner):
+        self.banner = banner
+
+    def __call__(self, local_ns, global_ns):
+        self.local_ns = local_ns
+        self.global_ns = global_ns
+
 dummy_root = Dummy()
 
 dummy_registry = Dummy()
-- 
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